CN101090868A - Magnetization photocatalysis integrated sewage regeneration and utilization device - Google Patents

Abstract

A magnetic photocatalysis integrated sewage recycling device comprises an integrated box body provided with a water inlet pipe, a water outlet pipe and a sludge packing port, wherein a coagulation box, an oxygen oxidation box, a photocatalysis box and a mud-water separation box are arranged in the integrated box body; the photocatalysis box is adjacent to the ozone oxidation box, ultraviolet lamp component assemblies and automatic micro filters are arranged in the photocatalysis box in a staggered mode, and a vertically-arranged UF ultrafilter component is arranged at the bottom of the photocatalysis box and is connected with a water outlet pipe; the drain outlet of the automatic micro-filter is communicated with a mud-water separation tank, a solid-liquid automatic separator is arranged in the mud-water separation tank, and a sludge packing port is arranged on the side wall of the mud-water separation tank. The invention integrates multiple processes, has small volume, short flow, high purification efficiency and low cost, and can be automatically controlled.

Description

Magnetized photocatalytic integrated sewage recycling device

Technical field:

The utility model relates to the field of sewage treatment, in particular to a recycling device for sewage such as agriculture, forestry, animal husbandry and fishery water, urban miscellaneous water, industrial water, environmental water, and supplementary source water.

Background technology - With the rapid development of social economy, the industrialization and urbanization of human society are increasing day by day, and the phenomenon of water pollution is becoming more and more serious. In the past 10 years, the discharge of urban domestic sewage in my country has been increasing at a rate of 5% every year, surpassing the discharge of industrial sewage for the first time in 1999. In 2001, the discharge of urban domestic sewage was 22.1 billion tons, accounting for 53.2% of the total discharge of sewage in the country. In 2002, the total discharge of domestic industrial and urban domestic wastewater was 43.95 billion tons, of which the total discharge of urban domestic wastewater was 23.23 billion tons, an increase of 0.9% over the previous year. Due to such a huge sewage pressure, the sewage treatment plants in various places have been overloaded for a long time, and even the untreated sewage is directly discharged into the rivers and lakes, so that the rivers and lakes gradually lose their self-purification ability, forming the first black odor and hypoxia as the representative. First-generation water pollution, or the second-generation water pollution represented by heavy metal and toxic chemical pollution, or the third-generation water pollution represented by excessive nutrient element pollution, and even the third-generation water pollution in many rivers and lakes Pollution occurs at the same time, making the water pollution of our country's rivers and lakes increasingly serious. With the new national standard GB/T18920-2002 (May 2003) of "Urban Sewage Reuse of Urban Miscellaneous Water Quality" and "Urban Sewage Reuse of Landscape Environment Water Quality" standard 8/118921-2002 (May 2003) Many cities in China, such as Beijing, Shanghai, Tianjin, Qingdao, Shenzhen, and Guangzhou, issued their own sewage recycling policies. On December 1, 2004, Tianjin stipulated that new residential buildings must be equipped with recycled water utilization systems.

At present, in the field of traditional water treatment technology, the most classic method for the purification of substances and the concentration of sludge is to directly use reaction tanks, sedimentation tanks, filter tanks (tanks), sludge thickening tanks (machines), dehydrators, pressurizers, etc. A series of structures and equipment such as filters, etc., the effluent after treatment can basically meet the requirements, but there is a large area of the entire project and high investment costs, resulting in low economic benefits of the process and a waste of resources. Generally, small and medium-sized enterprises Unbearable, which is also one of the important reasons why environmental protection water treatment work is difficult to advance.

Utility model content:

The utility model aims at the problems that the current urban industrial wastewater, municipal domestic wastewater and agricultural irrigation water purification equipment occupy a large area, and the investment cost and operation cost are high, and provides a magnetic coagulation, automatic filtration, ozone oxidation, high-efficiency An integrated sewage recycling device that integrates processes such as microfiltration, photocatalytic oxidation, UF ultrafiltration, and automatic sludge dehydration. The device is small in size, high in purification degree, low in cost, and can realize all-weather automatic control.

The technical scheme proposed by the utility model is:

A magnetized photocatalytic integrated sewage recycling device, characterized in that:

It includes an integrated box with a water inlet pipe, an outlet pipe and a sludge packing port. The integrated box is equipped with a coagulation box, an ozone oxidation box, a photocatalytic box and a mud-water separation box, which are sealed and installed with each other. The condensation box communicates with the ozone oxidation box through an automatic filter, which includes a gas, medicine, and water mixing chamber with an inlet connected to a water inlet pipe, and a jet nozzle at the outlet of the gas, medicine, and water mixing chamber, which communicates with a jet expander , a magnetic ring is installed on the outer surface of the ejector nozzle or the jet expander or the above two; the photocatalytic box is adjacent to the ozone oxidation box, and at least one ultraviolet lamp assembly and automatic microfilter are arranged in a staggered manner inside it, and the bottom There is at least one vertically placed UF ultrafilter assembly connected to the outlet pipe; the microfilter sewage outlet of the automatic microfilter is connected to the mud-water separation box, and the mud-water separation box is equipped with an automatic solid-liquid separator, and the side wall There is a sludge packing port.

The ultraviolet lamp assembly includes an ultraviolet lamp assembly bracket and an ultraviolet lamp tube, and the ultraviolet lamp tube is fixed on the ultraviolet lamp assembly bracket through an ultraviolet lamp holder, arranged in horizontal or vertical rows, with a wavelength of 185-254nm, and each ultraviolet lamp The distance between the tubes is 40- 80cm;

The automatic microfilter includes a microporous filter cartridge, one end of the microporous filter cartridge is equipped with a silica gel residue cleaning ring, the other end is equipped with a pressure difference control sensor, the outside is covered with a stainless steel mesh, and the surface of the stainless steel mesh is coated with a photocatalyst film. The photocatalyst film material is titanium dioxide;

The UF ultrafilter assembly includes a UF ultrafiltration membrane assembly and a UF ultrafiltration membrane support plate, wherein the UF ultrafiltration membrane support plate is sealed and connected to the bottom plate of the photocatalytic box, the middle is connected to the water outlet pipe, and the bottom is provided with an ultrafiltration sewage outlet; .

The ozone oxidation box is provided with an ozone gas-water mixing tube, and an ozone gas-water mixing nozzle is housed in the tube;

The ultraviolet light tube is covered with a waterproof quartz sleeve, which is fixed on the combined bracket of the ultraviolet lamp. It is a high-pressure pure quartz tube, and the distance between the two quartz sleeves is between 20-30cm;

The automatic microporous filters are arranged vertically and horizontally, wherein the distance between each vertical row is 10-40cm, and the distance between each horizontal row is 50-80cm.

Compared with the prior art, the utility model has the following technical effects - 1) The purification treatment speed is faster and the efficiency is higher - the conventional flocculation reaction, sedimentation, filtration and other water purification processes are slow in the settlement and floating of flocs, Coupled with the resistance of the filter material, it takes at least 2 hours for the solid-liquid separation to achieve clear water quality. And the utility model is due to Jet magnetic coagulation, automatic filtration, ozone oxidation, high-efficiency microfiltration, photocatalytic oxidation, automatic sludge dehydration and other processes are adopted, which saves the time for settling and floating of flocs, and because the flocs are removed from the water Through automatic filter and automatic high-efficiency microfiltration, it happens instantly and takes almost no time. Therefore, the entire water treatment time is greatly shortened, the purification efficiency is high, and the cost is low. From the sewage entering the device to the clean water flowing out of the unit, the entire reaction and The process of solid-liquid separation only takes 5 minutes, and it can be automatically controlled around the clock, which is very convenient.

2) Large water treatment energy and small volume:

Since only the reaction time of the device needs to be considered in terms of fluid mechanics and photochemical reactions, the volume of the 5-minute flow is the volume of the entire unit. A unit with a daily processing capacity of 1200m ³ /d (50m ³ /h), covers an area of <8m ² , which is 1/10 of the traditional process, and is only about 2-5 meters in height. The equipment investment is 450,000-600,000 yuan. It is about 50% of the traditional process, and the operating cost per ton of water is 0.3 yuan, which is 30% lower than the traditional one. If it is used in landscape water treatment, it can be skillfully hidden behind a rockery, and the clean water produced can cascade down from the rockery without occupying any space. , high operating costs, and special personnel are required for operation and management.

The maximum processing capacity of the utility model device can reach 24000m7d (1000mVh). If it is used in the treatment of oily sewage in oilfields, it can save huge settling tanks (tanks) and numerous filter tanks, and can save a lot of site and infrastructure, maintenance and operation costs , and the water quality is even better.

3) High mobility and flexibility:

Due to the small size and low power consumption of the device of the utility model, a 50m ³ /h unit consumes several kilowatts of electricity, and can be made into a vehicle or ship-mounted form, and can be brought to the site anytime, anywhere for nearby, temporary and emergency treatment. For example, on-site treatment of oil drilling, the clear water can be reused immediately after treatment with highly diluted drilling mud, which can greatly reduce the amount of water transported. The mud bagging is easy to handle and is conducive to environmental protection.

The utility model adopts modern high-tech means, combined with accurate calculation of environmental engineering, biology, fluid mechanics, optics, automatic control and other science and technology, adopts magnetic coagulation, automatic filtration, ozone oxidation, high-efficiency microfiltration, photocatalysis Oxidation, UF ultrafiltration, sludge automatic dehydration and other processes are integrated to carry out multi-stage purification treatment of reclaimed water pollutants, and realize the treatment of B0D ₅ , COD, SS, NH ₃ -N, bacteria, viruses and halogenated organic compounds in water, Carboxylic acid, surfactant, nitrogen-containing organic matter, organophosphorus and other organic substances, as well as inorganic substances such as cyanide ions and metal ions can be removed or completely inorganicized, so that the effluent can meet or exceed the national GB/T18920-2002 issued in May 2003 "Urban Sewage Reuse of Urban Miscellaneous Water Quality" standard and GB/T18921-2002 "Urban Sewage Reuse of Landscape Water Quality" standard.

The utility model supports agriculture, forestry, animal husbandry, fishery water, urban miscellaneous water, industrial water, environmental water, supplementary water source Water and other sewage recycling can be widely used in the deep purification and recycling of industrial wastewater and municipal wastewater, the treatment of garbage permeate, the regeneration and reuse of industrial circulating water in large power plants and oil refineries, oilfield water injection and garden real estate, municipal parks , Reclaimed water reuse in tourist areas, disinfection and sterilization of water bodies such as artificial lakes, fountains, and landscape fish ponds, and removal of algae.

Description of drawings:

Fig. 1 is a top view of a structural embodiment of the utility model;

Fig. 2 is a structural schematic diagram of the utility model automatic microfilter components;

Fig. 3 is a schematic structural diagram of the components of the ultraviolet lamp combiner of the present invention;

Fig. 4 is a schematic structural diagram of the ultrafilter at the bottom of the photocatalytic box of the present invention.

In the picture:

1—integrated box; 2—water inlet pipe; 3—water outlet pipe;

4—coagulation box; 5—ozone oxidation box; 6—photocatalytic box;

7—mud-water separation box; 8—gas, medicine, water mixing chamber; 9—gas, medicine introduction pipe;

10—magnetic ring; 11—jet nozzle; 12—jet expander;

13—automatic filter; 14—filter water inlet; 15—filter water outlet;

16—filter sewage pipe; 17—ozone gas distribution pipe inlet; 18—ozone gas water mixing pipe;

19—ozone gas water mixing nozzle; 20—automatic microfilter; 20.1—microporous filter cartridge;

20. 2—support frame for filter cartridge; 20. 3—stainless steel mesh outside filter cartridge; 20. 4—microfilter fasteners;

20. 5—Silicone filter residue cleaning ring; 20. 6—Pressure difference control sensor; 21—Microfilter sewage outlet;

22—solenoid valve; 23—ultraviolet lamp assembly; 23. 1—ultraviolet lamp combination bracket;

23. 2—ultraviolet lamp tube; 23. 3—quartz sleeve; 23. 4—ultraviolet lamp holder;

23. 5—fastener; 24—photocatalyst film; 25—automatic solid-liquid separator;

26—submersible sewage pump; 27—check valve; 28—sludge packing port;

29-UF ultrafilter; 29.1-UF ultrafilter assembly; 29.2—support plate;

29. 3—Ultrafiltration sewage outlet.

Detailed ways:

Figure 1 shows an application embodiment of the present invention. As shown in the figure, it consists of an integrated box 1, and the inner wall of the box is provided with a water inlet pipe 2, an outlet pipe 3 and a sludge packing port 28. The sewage to be treated enters through the water inlet pipe 2, and after treatment It is discharged from the outlet pipe 3, and the treated sludge is discharged from the sludge packing port 28. The integrated box 1 is a treatment box that completes water purification, and is provided with a coagulation box 4, an ozone oxidation box 5, a photocatalytic box 6, and a mud-water separation box 7. The coagulation box 4, the ozone oxidation box 5, The photocatalytic box 6 and the mud-water separation box 7 are all sealed and installed so that there is no leakage between them during the purification process, so as to ensure the degree of purification. Among them, the coagulation tank 4 communicates with the ozone oxidation tank 5 through the filter water inlet 14 through the automatic filter 13, which includes a gas, medicine and water mixing chamber 8 with an inlet connected to the water inlet pipe 2, and the gas, medicine and water are mixed The chamber 8 is provided with an inlet pipe 9 for air and medicine, and the outlet is provided with a nozzle 11, which communicates with the jet expander 12, and the sewage which has been mixed with gas, medicine and water can be coagulated and stirred through the jet expander 12, and the coagulation box 4. The bottom is provided with a filter blowdown pipe 16, and the preliminary filtered sewage can be discharged through the blowdown pipe. In addition, a sludge check valve 27 is installed at the outlet of the filter sewage pipe 16 to prevent the sludge from flowing back into the coagulation tank 4. On the outer surface of the nozzle 11 and the jet expander 12, a magnetic ring 10 is installed, and the sewage can be magnetized and coagulated first, and the strong magnetic field generated by the magnetic ring 10 breaks the molecular chain of the water, so that the group water molecules become single Water molecules, thereby reducing the surface tension of water, softening water quality, improving water solubility, activating static oxygen in water, increasing the oxygen content of water, for subsequent coagulation filtration and ozone oxidation, high-efficiency microfiltration, photocatalytic oxidation treatment Bring convenience. Since the water ions in the sewage will generate spin after magnetization, the solubility, penetration and adsorption of water are strong. After this magnetization, aeration and oxygenation and ozone oxidation treatment, it will enter the photocatalytic reaction The light transmittance of the water quality of the device provides a full guarantee.

The ozone oxidation box 5 is provided with an ozone gas-water mixing pipe 18, and the mouth of the pipe is an ozone gas distribution inlet 17, and an external ozone generator is sprayed out through an ozone gas-water mixing nozzle 19 located in the pipe, which can convect the flow through the ozone oxidation The pollutants in the sewage in the box 5 are strongly oxidized, sterilized and disinfected. Ozone is a broad-spectrum, high-efficiency, and rapid bactericide with strong oxidizing power. It has a strong killing effect on germs, viruses, and microorganisms that cause diseases in humans and animals. The oxidation ability is twice as high as that of chlorine, and the sterilization speed is 600~3000 times faster than that of chlorine. It can even kill bacteria in a few seconds and oxidize most organic matter in a few minutes. The important advantage of ozone is that it does not leave any secondary pollutants harmful to the human body.

In addition, ozone can also kill many germs and viruses, such as lactic acid bacteria, bacillus anthracis, actinomycetes, yersinia, salmonella, clostridium botulinum virus, influenza virus and so on. Ozone can also oxidize with some toxic gases, such as carbon monoxide, nitrogen monoxide, sulfur monoxide, mustard gas, etc., and lose its toxic effect. In addition to sterilizing, disinfecting and killing microorganisms, ozone dissolved in water can also oxidize and decompose pollutants and impurities in water, remove manganese, sulfide, phenol cyanide, pesticides, detergents, nitrite in water, and reduce carcinogenic chloroform in chlorine treated water , chloromethane, carbon tetrachloride, etc., can also decolorize, remove algae, deodorize, and remove turbidity.

The photocatalytic box 6 is adjacent to the ozone oxidation box 5, the bottom is funnel-shaped, and at least one automatic micro - - The filter 20 and the ultraviolet lamp assembly 23 are coated with a photocatalyst film 24 on the inner wall. The material of the photocatalyst film 24 is mainly titanium dioxide. Titanium dioxide has superhydrophilicity. Electrons are activated. The result is negatively charged electrons and positively charged holes. The electrons reduce the oxygen in the air or water to generate hydrogen peroxide, while the electron holes migrate to the oxidized surface to generate hydroxide (hydroxyl) radicals. These are all active oxygen, which have a strong oxidative decomposition ability, so that they can decompose and remove various organic substances attached to the surface of titanium oxide, and can kill microorganisms such as bacteria and viruses.

As shown in Figure 2, the automatic microfilter 20 is a cylinder with a three-layer structure, the inner layer of which is a support frame 20.2 made of plastic or stainless steel; the middle layer is a microporous filter cartridge 20.1, this The filter cartridge material is mainly polyester felt, polyethylene felt and polypropylene felt, with a filtration accuracy of 0.5-1 micron; the outer layer is a coarse-pore stainless steel mesh 20.3, and the surface layer of the coarse-pore stainless steel mesh is loaded with a photocatalyst film 24 , The main material of the photocatalyst film 24 is titanium dioxide. One end of the microporous filter cartridge 20.1 is equipped with a silica gel residue cleaning ring 20.5, and the other end is equipped with a pressure difference control sensor 20.6 and a filter cartridge fastening flange 20.4, and a filter cartridge fastening flange 20 . 4 is connected with the integrated box body 1, and a solenoid valve 22 is installed between the integrated box body 1.

As shown in Figure 3, the ultraviolet lamp assembly 23 includes an ultraviolet lamp assembly bracket 23.1 and an ultraviolet lamp tube 23.2, and the ultraviolet lamp tube 23.2 is fixed on the ultraviolet lamp assembly bracket 23.1 through an ultraviolet lamp holder 23.4 On the top, the sealing frame is located on the upper end of the photocatalytic box 6, at least one is arranged in a horizontal or vertical row, the ultraviolet light wavelength is 185-254™, and the ultraviolet lamp combination bracket 23.1 is fastened with a fastener 23.5 Fixed on the cover plate of the photocatalytic box 6, the distance between each ultraviolet lamp tube 23.2 is a distance of 40-80cm. On the outside of the ultraviolet lamp tube 23.2, a waterproof quartz sleeve 23.3 is set, and the ultraviolet lamp holder 23.4 is fixed on the ultraviolet lamp combination bracket 23.1 with a fastener 23.5, which is a high-pressure pure The quartz tube can be used to isolate water and protect the ultraviolet lamp tube 23.2 in the sleeve tube. The distance between the two quartz sleeve tubes 23.3 is between 20-30cm, which can increase the contact surface area between the ultraviolet lamp assembly 23 and the sewage. Direct photolysis or photocatalytic oxidation of sewage pollutants further improves the practicability and reliability of the utility model.

As shown in FIG. 4, at least one vertically placed UF ultrafilter assembly 29 is provided at the bottom of the photocatalytic box 6, which is connected to the outlet pipe 3. The UF ultrafilter assembly 29 includes a UF ultrafiltration membrane assembly 29.1 and a UF ultrafiltration membrane support plate 29.2. The UF ultrafiltration membrane support plate 29.2 is sealed and connected to the bottom plate of the photocatalytic box 6, and the middle is connected to the outlet pipe 3 connected, the bottom is provided with an ultrafiltration sewage outlet 29. 3 c

The microfilter sewage outlet 21 of the automatic microfilter 20 communicates with the mud-water separation box 7, and the mud-water separation box 7 is provided with an automatic solid-liquid separator 25, and a sludge packing port 28 is provided on the side wall. After purification by photocatalysis, automatic filtration, UF ultrafiltration, etc., the water flows out from the outlet pipe 3, while the sewage outlet 21 of the microfilter such as sludge and impurities flows into the mud-water separation box 7 through the control of the solenoid valve 22, and is controlled by the solenoid valve 22. The solid-liquid automatic separator 25 realizes the separation of solid and liquid, and the dried sludge is taken away by the sludge packing port 28.

The utility model first carries out magnetization coagulation treatment on sewage, and then adopts a high-efficiency microfilter loaded with photocatalyst to filter the sewage micro-pollutants that have been magnetized and ozonated, and completes a higher level of purification by applying ultraviolet light and photocatalyst. In this way, the effect of multi-stage purification can be achieved, the purification efficiency is high, the structure is compact, and the cost is low. By using magnetized coagulation filtration, ozone oxidation treatment, and photochemical reaction between the photocatalyst film 24 and ultraviolet light in the photocatalytic box 6, Effectively achieve multi-stage purification with high efficiency and low cost, photocatalytic strong oxidation can quickly kill bacteria, viruses and algae in water, and can realize the treatment of hydrocarbons, halogenated hydrocarbon organics, carboxylic acids, surface Organic substances such as active agents, nitrogen-containing organic substances, and organic phosphorus, as well as inorganic substances such as cyanide ions and metal ions, etc. are completely inorganic, and realize the removal of pollution such as residual pesticides, chloroform, polychlorinated biphenyls, organic phosphorus compounds, and polycyclic aromatics. matter, and finally checked by UF ultrafiltration. In this way, the effect of regeneration and utilization after deep purification of sewage is finally achieved. The coagulation box 4, the ozone oxidation box 5, the photocatalytic box 6, the mud-water separation box 7, etc. are designed as modules to facilitate the transportation and installation of the device. The integrated device and accessories are made of stainless steel, which can improve corrosion resistance and service life; UF ultrafilter assembly 29 is not equipped with a special booster pump, which converts water gravity up to 5 meters into pressure work, achieving energy saving and extending UF ultra-filtration. The purpose of the life of the membrane module 29; the perfect combination of jet magnetic coagulation, automatic filtration, ozone oxidation, high-efficiency microfiltration, photocatalytic oxidation, UF ultrafiltration, automatic sludge dehydration, etc., reflects the compact structure of the equipment and the advantages of automatic control Creativity and novelty.

The working process of the utility model:

When the waste water enters the gas, medicine and water mixing chamber 8 in the form of a jet at an appropriate flow rate, such as 1 m/s-3 m/s, the coagulant medicine from the gas medicine introduction pipe 9 is continuously inhaled by the negative pressure and air, and fully mix the medicine with air and sewage in the air, medicine and water mixing chamber 8, so that the gas-liquid flow forms tiny bubbles in it, and carries out emulsification reaction, which promotes the diffusion of oxygen molecules and coagulant medicine , which accelerates the coagulation process. When the gas-liquid mixture that has completed the coagulation process is forced to pass through the ejector nozzle 11, the strong magnetic field generated by the magnetic ring 10 can generate a strong magnetic field of 4000-20000 Gauss in the water pipe. Passing through the magnetic field at a certain flow rate, cutting the magnetic field lines, the water will generate charges and the electromotive force that makes the charges move, so the sewage will produce physical changes such as currents and potential differences, and generate electric energy. At this time, there are charges and potentials in the sewage, which will change the state and properties of the water itself and other substances contained in the water. This magnetized water has the ability to produce physical changes and electrochemical changes on the pipe walls and container walls that are in contact with it. energy. In impure sewage, impurities such as salt, alkali and acid are dissolved to varying degrees. The sewage has a certain pH, and at the same time, undissolved solid impurities and trace metal and non-metal elements are suspended to varying degrees. Impurities and other elements contribute to most Most of the industrial, agricultural, living, and drinking water are non-insulating substances with certain conductivity, and can be magnetized to varying degrees. Impurities such as calcium and iron in the water will also produce positively and negatively charged ions. The ions are attracted to each other due to the positive: ¾ electric relationship, causing the suspended impurities to condense and increase in volume, and complete the sewage magnetization coagulation process.

When sprayed into the jet expander 12 by the jet expander 11, because the entire potential water of the jet expander 12 is a long barrel-shaped design, the space area is more than 20 times larger than the jet expander 11, and the jet expander 11 and The jet expander 12 is a concentric circle on the same straight line plane, and the jet expander 11 is separated from the jet expander 12 by 15 cm. When the high-speed sewage ejected from the jet expander 11 shoots to the jet expander 12, the jet energy dissipation entrainment is utilized The principle is that the coagulated sewage around the jet expander 12 is continuously inhaled by the jet expander 12 and magnetized and mixed to form a large water flow at a uniform speed. The large momentum water flow with a uniform speed greatly reduces the vortex pump water directly in the water. Due to the loss of momentum during fan jetting, the flow rate can be greatly amplified, the flow velocity is slowed down, and the impact on the condensed large-volume suspended debris is reduced. In the process of pushing the sewage to the water inlet 14 of the filter at a uniform speed and high flow, the principle of jet energy dissipation and entrainment is used again to push the condensed large-volume suspended debris into the automatic filter 13 and pass through the automatic filter 13. The filter with an inner filtration accuracy of 20 microns completely intercepts the condensate larger than 20 microns. When the pressure difference sensor or timer in the automatic filter 13 senses that the filter screen should be cleaned, the automatic filter 13 can realize the function of automatic flushing , the filter residue is discharged to the mud-water separation box 7 through the filter sewage pipe 16, and then the mud-water is separated by the centrifugal solid-liquid automatic separator 25, and enters the sludge for harmless treatment. After passing through the filter with a filtration accuracy of 20 microns in the automatic filter 13 to completely intercept the condensate greater than 20 microns, the pollutants and sewage less than 20 microns continue to flow into the ozone oxidation box 5 through the filter outlet 15, thereby completing the second step. Primary filtration process.

Since the ozone oxidation box 5 is equipped with an ozone gas-water mixer 18, the ozone enters the ozone gas-water mixer 18 through the ozone gas distribution pipe inlet 17 and is sprayed out through the ozone nozzle 19. Impurities are further oxidized to further remove BOD ₅ , COD, SS, NH ₃ -N, bacteria, viruses, halogenated organics, carboxylic acids, surfactants, nitrogen-containing organics, organic phosphorus and other organic substances in water. The ozone-oxidized sewage enters the automatic microfilter 20 in the photocatalytic box 6 for treatment, and the ozone oxidation process is completed.

When the sewage oxidized through ozone enters the automatic microfilter 20, because every group of automatic microfilter 20 is a cylinder of three-layer structure. Sewage enters through one end of the silica gel filter residue cleaning ring 20.5, because the other end of the cylinder is equipped with a pressure difference control sensor 20.6, so the sewage can only pass through the microporous filter cartridge 20.1 in the middle layer of the cylinder forcibly , The colloids and suspended matter larger than 0.5-1 micron in the sewage will be intercepted, and the water and the suspended matter smaller than 0.5-1 micron will flow into the photocatalytic reaction box 6 together. When the colloids and suspended matter larger than 0.5-1 micron in the sewage fill the filter cartridge, the flow rate of the sewage will slow down and the pressure will increase. At this time, the pressure difference control will feel - - The responder 20.6 will transmit the opening/closing signal to the solenoid valve 22 connected to each group of automatic microfilters 20 according to the set pressure range or the preset time, and the solenoid valve 22 will complete the opening/closing when receiving the signal To close the task, when the solenoid valve 22 is opened, the silica gel filter residue cleaning ring 20.5 connected by the pull rod is driven to move toward the direction of the solenoid valve 22 on the prescribed stroke, and the water will be drained together with the silica gel filter residue cleaning ring 20.5 because of hydraulic pressure. The filter residue intercepted in each group of automatic microfilters 20 is discharged into the muddy water treatment tank 7 through the sewage outlet 21 of the microfilters. When the water washes out the filter residues retained in each group of automatic microfilters 20, the electromagnetic valve 22 completes the closing task when receiving the signal, and at the same time drives the silica gel filter residue cleaning ring 20.5 connected to the pull rod to return to its original position, during the entire filter cartridge cleaning process In the process, automatic control of online cleaning without interruption of flow is realized, thereby completing the process of automatic microfilter 20 cleaning and sewage microfiltration.

When the sewage and the suspended matter less than 0.5-1 micron flowed into the photocatalyst box 6 together, the photocatalyst film was loaded on the inner wall of the photocatalyst box 6 and the coarse-pore stainless steel mesh 20.3 on the outer surface of the filter cartridge 24. Under the irradiation of ultraviolet light with a light wave of 185nm-254nm from the ultraviolet lamp 23.4, the electrons on the forbidden band of the photocatalyst film 24 absorb light energy and are excited to the conduction band to generate highly active electrons with strong negative charge , At the same time, positively charged holes (h+) are generated on the forbidden band, thereby generating electron-hole pairs with strong activity. The oxidation potential of the photogenerated holes of the semiconductor photocatalyst (Ti¾) is 3 according to the standard hydrogen potential 0V, which is much higher than 2.07V of ozone and 1.36V of chlorine, and has strong oxidizing properties. 0 to be oxidized to generate H free radicals with strong oxidative properties. That is, these electron-hole pairs migrate to the surface of the photocatalyst film 24 to react with dissolved oxygen and water, and finally produce hydroxyl radicals with high chemical oxidation activity (· OH) and superoxide ions, from the order of the oxidation potential of several commonly used strong oxidants (F ₂ > OH > 0 ₃ > Η ₂ 0 ₂ > Η0 ₂ > Mn0 ₄ -> HC10 > C1 ₂ > Cr, θ '> C10 ₂ ) It can be seen that the OH free radical has a high oxidation potential and is a strong oxidizing group, which can oxidize most organic pollutants and some inorganic pollutants, and kill various bacteria and viruses and completely oxidize organic matter into carbon dioxide and water. At the same time, holes themselves can also capture electrons in organic pollutants adsorbed on the semiconductor surface, so that substances that do not absorb light are directly oxidized and decomposed, and have a wide range of oxidation effects on oxides. Spectrum, the electron affinity of 0H free radical can reach 569.3kj, it is easy to attack the organic molecular part with high electron cloud density, further oxidize the intermediate product, and form a redox system. In the photocatalytic reaction system, these two The oxidation mode works synergistically, and at the same time completes a more advanced photocatalytic oxidation purification process. On the other hand, the electron acceptor can directly receive the highly active electrons generated on the surface of the photogenerated semiconductor and be reduced, and some specific pollutants in the water body - toxic metals , such as Hg ²⁺ , Ag ¹⁺ , Cr ^e+ , Cu ²⁺ , etc. can also receive highly active electrons generated on the surface of photogenerated semiconductors and be reduced to non-toxic metal molecules. Through the multi-stage purification of sewage by the utility model, the Hydrocarbons, halogenated organic substances (including halogenated aliphatic hydrocarbons, halogenated carboxylic acids, halogenated aromatic hydrocarbons), carboxylic acids, surfactants, nitrogen-containing organic substances, organic phosphorus and other organic substances that are disinfection by-products in sewage water, as well as toxic metal ions Inorganic substances such as organic matter can be completely inorganicized, and a photocatalytic oxidation process can be realized to remove pollutants such as residual pesticides, chloroform, polychlorinated biphenyls, organophosphorus compounds, and polycyclic aromatic hydrocarbons.

The water that has undergone the photocatalytic oxidation process enters the UF ultrafilter assembly 29 from the bottom of the photocatalytic box 6. Since the photocatalytic box 6 is designed as a funnel-shaped bottom with a height of 5 meters, the pressure formed by the water's own gravity will press the water into the UF ultrafilter The booster assembly 29 works, so there is no need to equip a dedicated booster pump. Therefore, the water through the photocatalytic oxidation process enters the UF ultrafilter assembly 29 from the bottom of the photocatalytic box 6, and the regenerated water after treatment is discharged from the outlet pipe 3 in the middle of the bottom plate of the photocatalytic box 6 for use. The backflush liquid of UF ultrafilter assembly 29 is discharged into mud-water separation box 7 by ultrafiltration blowdown outlet 29.3 and has completed the final water quality control work of UF ultrafilter.

After the backflushing sewage of the automatic filter 13, the backflushing sewage of the automatic microfilter 20, and the backflushing sewage of the UF ultrafilter assembly 29 are discharged into the mud-water separation box 7, the centrifugal solid-liquid automatic separator 25 performs The solid-liquid is automatically separated, and the sludge formed due to the solid-liquid separation is packed and transported away by the sludge packing port 28. The sewage formed due to the solid-liquid separation is pumped back to the original water pool by the submersible sewage pump 26 for further treatment. The submersible sewage pump 26 is equipped with Check valve 27 prevents sewage from flowing back. In this way, through the processes of sewage magnetic coagulation, automatic filtration, ozone oxidation, high-efficiency microfiltration, photocatalytic oxidation, and UF ultrafilter ultrafiltration, various types of organic pollutants, bacteria, and viruses have been removed from regenerated water and then supplied Users use water for farming, forestry, animal husbandry, fishery, urban miscellaneous water, industrial water, environmental water, supplementary source water, etc., and realize the purpose of recycling sewage.

The utility model can be made into a magnetized photocatalytic integrated sewage regeneration utilization device with an hourly processing capacity of 10-1000 cubic meters according to needs. Since the utility model is a combination of multiple modules, it can increase or decrease the combination of modules to meet the needs of different water quality, so as to achieve the purpose of saving equipment investment.

The utility model supports water for agriculture, forestry, animal husbandry and fishery with its small size, large processing capacity, fast speed, high efficiency, low operating cost, low power consumption, automatic operation, easy debugging, strong mobility, and durability. Urban miscellaneous water, industrial water, environmental water, supplementary source water and other sewage recycling. It can be widely used in the deep purification, regeneration and reuse of industrial wastewater and municipal wastewater, the treatment of garbage permeate, the regeneration and reuse of industrial circulating water in large power plants and oil refineries, water injection in oil fields and reclaimed water in garden real estate, municipal parks and tourist areas Regeneration and reuse, disinfection and sterilization of artificial lakes, fountains, landscape fish ponds and other water bodies, removal of algae, etc.

The specific purposes of the utility model are as follows:

1. Water purification of rivers, rivers, lakes and reservoirs: (self-provided water plant) - -

2. Wastewater, sewage, dirty water treatment and reuse:

Light, textile and food industry washing wastewater (washing water of barrels, tanks, bottles, raw materials and other dirty things), iron and steel plants (gas washing water, steel wastewater, dust removal water), mine dressing wastewater, oily oily wastewater, coal mine coal washing wastewater, Wastewater from paper mills, car washing wastewater, landscape water, swimming pool water, etc. can be returned and reused after treatment, saving a lot of water.

3. Water reuse treatment:

Domestic high-quality miscellaneous drainage (domestic washing water), urban domestic sewage treatment standard discharge water, and rainwater collection after treatment are used for toilet flushing, car washing, ground washing, and greening.

4. Treatment of muddy sewage:

Oil drilling sewage, river and lake bottom mud dredging, water plant sludge discharge, urban sewage treatment plant settlement tank sludge water treatment: mud concentration, clear water reuse.

5. Industrial circulating cooling water sewage or side stream water is softened and reused.

' 6. Replenishing groundwater resources:

Oil drilling sewage, urban sewage, etc. can be treated and refilled into the ground to supplement groundwater resources.

Claims (6)

Rights request 1. A magnetized photocatalytic integrated sewage recycling device, characterized in that: It includes an integrated box (1) provided with a water inlet pipe (2), an outlet pipe (3) and a sludge packing port (28). The integrated box (1) is equipped with a coagulation box (4), and the ozone oxidation box (5), photocatalytic box (6) and mud-water separation box (7), wherein the coagulation box (4) communicates with the ozone oxidation box (5) through the automatic filter (13), which includes an inlet and an inlet The gas, medicine, water mixing chamber (8) that water pipe (2) joins, the outlet of gas, medicine, water mixing chamber (8) is provided with ejector nozzle (11), communicates with jet expander (12), and its ejector nozzle (11) or the jet expander (12) or a magnetic ring (10) is installed on the outer surface of the above two; the photocatalytic box (6) is adjacent to the ozone oxidation box (5), and there are at least one ultraviolet The lamp assembly (23) and the automatic microfilter (20), the bottom is provided with at least one vertically placed UF ultrafilter assembly (29), which is connected to the outlet pipe (3); the microfilter of the automatic microfilter (20) The sewage outlet of the filter (21) communicates with the mud-water separation box (7), and the mud-water separation box (7) is provided with an automatic solid-liquid separator (25), and a sludge packing port (28) is provided on the side wall. 2. The magnetized photocatalytic integrated sewage recycling device according to claim 1, characterized in that: the coagulation tank (4), the ozone oxidation tank (5), the photocatalytic tank (6), the mud-water separation tank (7 ) for a sealed installation. 3. The magnetized photocatalytic integrated sewage recycling device according to claim 1, characterized in that: the ultraviolet lamp assembly (23) includes an ultraviolet lamp assembly bracket (23.1) and an ultraviolet lamp tube (23.2), The ultraviolet lamp tubes (23.2) are fixed on the ultraviolet lamp combination bracket (23.1) through the ultraviolet lamp holder (23.4), arranged in a horizontal or vertical row, with a wavelength of 185-254nm, and each ultraviolet lamp tube ( 23. The distance between 2) is 40- 80cm. 4. The magnetized photocatalytic integrated sewage recycling device according to claim 1, characterized in that: the automatic microfilter (20) includes a microporous filter cartridge (20.1), and the microporous filter cartridge (20.1 )—one end is equipped with a silica gel residue cleaning ring (20. 5), and the other end is equipped with a pressure difference control sensor (20. 6), covered with a stainless steel mesh (20. 3) outside, and the surface layer of the stainless steel mesh (20. 3) Plated with photocatalyst film (24). 5. The magnetized photocatalytic integrated sewage recycling device according to claim 1, characterized in that: the inner wall of the photocatalytic box (6) is coated with a photocatalyst film (24). 6. The magnetized photocatalytic integrated sewage recycling device according to claim 1, characterized in that: the UF ultrafilter assembly (29) includes a UF ultrafiltration membrane assembly (29.1), a UF ultrafiltration membrane support plate (29.2), the UF ultrafiltration membrane support plate (29.2) is sealed and connected to the bottom plate of the photocatalytic box (6), the middle is connected to the outlet pipe (3), and the bottom is provided with an ultrafiltration drain Sewage mouth (29.3). 7. The magnetized photocatalytic integrated sewage recycling device according to claim 1 or 2, characterized in that: the ozone oxidation box (5) is provided with an ozone gas water mixing tube (18), and the tube is equipped with ozone gas water Mixing nozzle (19). 8. The magnetized photocatalytic integrated sewage recycling device according to claim 3, characterized in that: the ultraviolet light tube (23.2) is covered with a waterproof quartz sleeve (23.3), fixed in the ultraviolet The lamp combination bracket (23.1) is a high-pressure pure quartz tube, and the distance between the two quartz sleeves (23.3) is between 20-30cm. 9. The magnetized photocatalytic integrated sewage recycling device according to claim 4, characterized in that: the automatic microporous filter (20) is arranged vertically and horizontally, wherein the distance between each vertical row is 10-40cm , the distance between the horizontal rows is 50-80cm. 10. The magnetized photocatalytic integrated sewage recycling device according to claim 4 or 5, characterized in that: the material of the photocatalyst film (24) is titanium dioxide.