CN102976564B - Continuous rural domestic waste water treating device - Google Patents

Abstract

The invention discloses a continuous rural domestic waste water treating device, wherein the inner space of a rectangular shell is divided into an anaerobic zone, an anoxic zone, an aerobic zone and a biological filtering zone; the biological filtering zone is arranged at the upper part in the aerobic zone; biological stuffing is suspended in the aerobic zone; active carbon is filled in the biological filtering zone; a first float is arranged on the liquid level in the anoxic zone; one end of a first pump is connected to the middle lower part of the anoxic zone, while the other end of the first pump extends between the housing wall of the aerobic zone and the housing wall of the biological filtering zone from the top of the aerobic zone; the pipe end extending between the two housing walls comprises a venturi tube; the opening of the venturi tube is downwards; a baffle plate is arranged right under the opening; a flow guide plate is arranged right under the baffle plate, and put on a second floating ball floating on the liquid level of the aerobic zone; a second float further floats on the liquid level of the aerobic zone; and a second pump is arranged between the aerobic zone and the biological filtering zone. The continuous rural domestic waste water treating device integrates the anaerobic zone, the anoxic zone, the aerobic zone and the biological filtering zone into a whole, thus being small in floor area, high in treating rate and high in automation degree.

Description

A continuous treatment device for domestic sewage and wastewater in rural areas

technical field

The invention relates to a waste water treatment device, in particular to a device for continuous treatment of rural domestic sewage and waste water.

Background technique

At present, most of the domestic sewage in rural areas of our country is directly discharged, causing pollution of rivers and ponds, which not only affects the living environment of villagers, but also seriously threatens the health of farmers. At present, there are many problems in rural areas such as weak infrastructure construction, inadequate drainage system and sewage treatment construction. At present, there are two main processes for rural sewage treatment, one is the membrane bioreactor (MBR) process, and the other is the constructed wetland process. Membrane bioreactor is a combination of membrane separation technology and activated sludge biotechnology. Its efficient solid-liquid separation makes the effluent water quality good, suspended solids and turbidity close to zero, and domestic sewage can be directly reused after treatment. Sewage is first anaerobically digested in a septic tank to reduce the load of organic matter. But there are also many shortcomings, mainly reflected in the relatively high price of the membrane, and the problem of membrane fouling has not been completely solved, such as physical clogging, chemical structure and biological pollution, resulting in short replacement cycles and poor operation and maintenance. The cost is high, and the biochemical function of MBR has not changed the biochemical essence. The constructed wetland process is that after the rural domestic sewage is treated in a septic tank, the supernatant enters the water inlet well through the water collection pipe, flows into the sedimentation tank through the grid, and the settled supernatant is pumped into the first-level constructed wetland with a pump, and then enters the Second-level constructed wetland, the effluent of the second-level constructed wetland returns to the clear water pond, which can be used for greening, irrigation, and can also overflow to nearby ponds, but this process requires large land and corresponding temperature. For example, in winter, the Technology has great limitations in use.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a continuous treatment device for rural domestic sewage and wastewater. The device requires less energy consumption, low cost, high degree of automation, no manual operation and no pollution during operation.

The technical solution adopted in the present invention is: it includes a rectangular shell, which is divided into four parts: anaerobic zone, facultative zone, aerobic zone, and biological filtration zone. L type, extending from the bottom of the anaerobic zone and the facultative zone to the side of the facultative zone, the upper part of the aerobic zone is a biological filtration zone, the aerobic zone is suspended with biological fillers, and the biological filter zone is filled with activated carbon; The anaerobic zone and the anaerobic zone are connected by an outlet pipeline, and the first buoy is placed on the liquid surface in the anaerobic zone, and the first buoy is connected to the automatic switch through the first lever; one end of the first pump is connected to the anaerobic zone through a pipeline The middle and lower part, the other end extends from the top of the aerobic zone through the pipeline between the shell wall of the aerobic zone and the shell wall of the biofiltration zone, and the pipeline stretched between the two shell walls One end contains a Venturi tube and an air tube connected to the narrowest area of the Venturi tube. The lower part is provided with a deflector whose height is lower than the bottom of the biological filtration zone. One end of the deflector is movably connected to the inner wall of the shell of the aerobic zone, and the other end is placed on the second floating ball floating on the liquid surface of the aerobic zone; the aerobic zone There is also a second buoy floating on the liquid surface of the zone, and the second buoy is connected to the automatic delay switch through the second lever; a second pump is set between the aerobic zone and the biofiltration zone, and the outlet pipe of the second pump extends in the biofiltration zone. top of the area.

The beneficial effects of the present invention are:

1. The equipment of the present invention is a sewage treatment device integrating anaerobic, facultative oxygen, aerobic, and biological filtration chambers. The equipment occupies a small area, has a high treatment rate, small investment in the treatment process, simple operation, low cost, and high degree of automation .

2. No aeration device is needed in the aerobic zone, reducing the cost of sewage treatment.

3. All processes are fully automatic control, with liquid level control pump switch, without manual operation.

Description of drawings

Fig. 1 is a structural representation of the present invention;

In the figure: Ⅰ. Anaerobic zone; Ⅱ. Facultative oxygen zone; Ⅲ. Aerobic zone; Ⅳ. Biological filtration zone;

1. Shell; 2. Inlet pipe; 3. Outlet pipe; 4. Mud outlet; 5. Buoy; 6. Automatic switch; 7. Lever; 8. Pump; 9. Pipeline; 10. Venturi tube; 11. Air pipe; 12. Baffle; 13. Deflector; 14. Float; 15. Biological filler; 16. Buoy; 17. Automatic delay switch; 18. Lever; 21. Activated carbon; 22. Export.

Detailed ways

As shown in Figure 1, the processing equipment includes a rectangular shell 1, which is divided into four parts by a partition wall, which are anaerobic zone I, facultative zone II, aerobic zone III, and biological filtration zone IV. In these four parts, the sewage enters the anaerobic zone I from the top of the anaerobic zone I through the water inlet pipe 2. The anaerobic zone I has a cover and is in a semi-closed state. The anaerobic zone I occupies the largest volume among the four zones. , the residence time of wastewater is the longest, the next door of anaerobic zone I is facultative zone II, anaerobic zone I and facultative zone II are separated by a partition wall, aerobic zone III is L-shaped, from anaerobic zone I and facultative zone II The bottom of facultative zone II extends to the side of facultative zone II, and the upper part of aerobic zone III is separated into a biological filtration zone IV.

Anaerobic zone I and facultative zone II are connected by outlet pipe 3, and outlet pipe 3 is located in the middle and lower part of the partition wall between anaerobic zone I and facultative zone II, which is beneficial for sludge to settle in anaerobic zone I instead of flowing to the anaerobic zone In the aerobic zone II, wastewater can automatically flow from the anaerobic zone I to the facultative zone II. There is a sludge outlet 4 in the anaerobic zone I, and the sludge can be discharged from the sludge outlet 4. A buoy 5 is placed on the liquid surface in the aerobic zone II, and the buoy 5 is connected to the automatic switch 6 through the lever 7. When the water level reaches a certain height, the buoy 5 drives the lever 7 to switch on the automatic switch 6.

A pump 8 is set between the facultative zone II and the aerobic zone III, one end of the pump 8 is connected to the middle and lower part of the facultative zone II through the pipeline 9, and the other end is connected to the top of the aerobic zone III through the pipeline 9. The pipeline 9 located in the aerobic zone III extends between the shell wall of the aerobic zone III and the shell wall of the biofiltration zone IV, and the end of the pipeline 9 located in the aerobic zone III contains a Venturi tube 10 and an air pipe 11 connected to the Venturi tube 10, one end of the air pipe 11 is connected to the narrowest area of the Venturi pipe 10, and the other end of the air pipe 11 extends out of the housing 1, and is lower than the upper end of the housing 1 slightly higher. The opening of the venturi tube 10 faces downward, and a baffle plate 12 is provided directly under the venturi tube 10 , and a deflector 13 is provided directly under the baffle plate 12 . The height of the baffle plate 12 is equivalent to the height of the bottom of the biological filtration zone IV, the height of the deflector 13 is lower than the bottom of the biological filtration zone IV, the baffle plate 12 can be fixed on the inner wall of the shell of the aerobic zone III, the deflector plate 13 One end is movably connected to the inner wall of the shell of the aerobic zone III, and the other end of the deflector 13 is placed on the floating ball 14, and the floating ball 14 floats on the liquid surface of the aerobic zone III. A buoy 16 is also floating on the liquid surface of the aerobic zone III, and the buoy 16 is connected to an automatic time-delay switch 17 through a lever 18. The liquid level of the aerobic zone III is controlled by the buoy 16 connected to the automatic time-delay switch 17. When the water level reaches a certain height, The buoy 16 drives the lever 18 to connect the automatic delay switch 17. The biological filler 15 is suspended in the aerobic zone III for the attachment and growth of microorganisms. A pump 19 is set between the aerobic zone III and the biological filtration zone IV, and the water inlet pipe 20 of the pump 19 extends to the innermost end of the aerobic zone III, so as to avoid dead ends in the aerobic zone and also avoid the aerobic reaction zone The water flow is short-circuited, increasing the flow of water flow. The outlet pipe 20 of the pump 19 extends at the top of the biological filtration zone IV. Activated carbon 21 is filled in the biological filtration zone IV, and microorganisms grow on the surface of the activated carbon 21 .

When the sewage enters the anaerobic zone Ⅰ from the water inlet pipe 2, the pump 8 is started, and the water is discharged to the aerobic zone Ⅲ through the pipeline 9. When the pump 8 pumps the water into the aerobic zone Ⅲ, an Negative pressure brings air into the water through the air pipe 11 to increase the dissolved oxygen concentration in the water. When the buoy 5 drives the lever 7 to disconnect the automatic switch 6 due to the drop in the water level of the aerobic zone II, the pipe 9 can form a siphon, and the pump 8 continues The waste water is introduced from the facultative zone II into the aerobic zone III. When the water flows out from the Venturi tube 10, it encounters the baffle 12. After the water hits the baffle 12, the concentration of dissolved oxygen increases. After passing through the baffle 12, it flows again. To the deflector 13, the water flows through the deflector 13 to the part away from the aerobic zone II, so as to avoid the generation of treatment dead angle. When the water level in the aerobic area III reaches a certain height, the buoy 16 drives the lever 18 to switch on the automatic delay switch 17, starts the pump 19, starts the pump 19, and discharges the water to the biological filtration area IV through the pipeline 20, and the water flows from the biological filtration area IV. When the upper end is poured down, there are microorganisms growing on the surface of the activated carbon 21 , and after the biological treatment attached to the surface of the biological filler 15 , the overflow is discharged from the outlet 22 .

Claims (3)

1. a domestic sewage in rural areas by using waste water apparatus for continous treatment, comprise a rectangle housing (1), it is characterized in that: in rectangle housing (1), be separated with anaerobic zone (I), aerobic area (II), aerobic zone (III), biofiltration district (IV) four parts, next door, anaerobic zone (I) is aerobic area (II), aerobic zone (III) is L-type, from anaerobic zone, the bottom of (I) and aerobic area (II) extends to the side of aerobic area (II), top in aerobic zone (III) is biofiltration district (IV), in aerobic zone (III), be hung with biologic packing material (15), in biofiltration district (IV), be filled with gac (21),

Between anaerobic zone (I) and aerobic area (II), have outlet conduit (3) to be connected, place the first buoy (5) on the liquid level in aerobic area (II), the first buoy (5) connects auto-switch (6) by the first lever (7);

Middle and lower part, the other end that the first pump (8) one end is connected in aerobic area (II) by pipeline by pipeline between the housing wall of Shen aerobic zone, top, aerobic zone (III) (III) and the housing wall of biofiltration district (IV), and this pipeline end of stretching between two described housing walls comprises a Venturi tube (10) is connected Venturi tube (10) Zhai district blast main (11) with one, and blast main (11) the other end reaches outside housing (1); The opening of Venturi tube (10) downward, the positive bottom of this opening is provided with baffle plate (12), the positive bottom of baffle plate (12) arranges height lower than the flow deflector (13) of biofiltration district (IV) bottom, and inner walls, the other end of flexible connection aerobic zone, flow deflector (13) one end (III) taken and be placed on the ball float (14) swimming on the liquid level of aerobic zone (III); Also floating on the liquid level of aerobic zone (III) have the second buoy (16), and the second buoy (16) connects Auto-delay switch (17) by the second lever (18); Between aerobic zone (III) and biofiltration district (IV), the second pump (19) is set, the top in the outlet pipeline Shen biofiltration district (IV) of the second pump (19).

2. a kind of domestic sewage in rural areas by using waste water apparatus for continous treatment according to claim 1, it is characterized in that: from inlet channel (2), from anaerobic zone, (I) top enters into anaerobic zone (I) to sewage, on anaerobic zone (I), be stamped lid, lid is semi-closed state, and anaerobic zone (I) shared volume in described four parts is maximum.

3. a kind of domestic sewage in rural areas by using waste water apparatus for continous treatment according to claim 1, is characterized in that: outlet conduit (3) is positioned at the middle and lower part between anaerobic zone (I) and aerobic area (II), and anaerobic zone (I) is provided with a mud discharging mouth (4).

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