RU239025U1 - Water disinfection plant - Google Patents

Abstract

This utility model pertains to a means for purifying water of harmful contaminants using ultraviolet radiation. The water disinfection unit comprises a housing with an outlet pipe at the top and mounting means at the bottom for securing it to a water tank. The housing contains a water disinfection module equipped with bactericidal UV lamps in quartz housings, as well as an ultraviolet radiation sensor and a water level sensor within the module. The sensors and UV lamps are connected to electronic ballasts. The lower portion of the housing contains side water intake ports. The housing outlet is connected to the tank's outlet pipe. The module has a lid and a bottom, with openings in the bottom that secure the ends of the quartz housings. The module is positioned within a frame of tubes around the perimeter of the module, which are secured with mounting tape to prevent vibration. The module lid contains openings for positioning the module relative to the housing, with the lid resting freely on the upper end of the housing. UV lamps in quartz housings and sensors are freely mounted within the housing, with the water level sensor positioned below the lower surface of the discharge pipe. The module and housing are made of stainless steel, and the discharge pipe area is larger than the combined area of the side water intake windows located in the lower portion of the housing. The technical result: reduced energy consumption of the system. 2 reference digits, 5 figs.

Description

This utility model relates to devices for treating stormwater and industrial wastewater and is used in water treatment systems for domestic and industrial purposes. Specifically, the utility model relates to ultraviolet water disinfection devices designed to destroy microorganisms (staphylococci, enterococci, and infectious bacilli), viruses, fungi, and mold. This is due to the spectral sensitivity of these microorganisms to disinfectant UV radiation, which destroys the DNA of microorganisms and prevents their reproduction.

Such devices include a known water disinfection device comprising a housing housing UV emitters enclosed in protective, UV-transparent flasks, and a flask surface cleaning mechanism comprising a profiled scraper configured to move along a guide along the surface of the protective flasks. The device further comprises a UV sensor connected to the flask surface cleaning mechanism for removing UV-absorbing contaminants (RU 231754, 10.02.2025). A disadvantage of this device is that servicing the unit requires the design of a dedicated water supply to the device inlet, as well as the design complexity associated with the quartz flask cleaning mechanism.

A device is known for purifying and disinfecting aqueous media, comprising a sealed housing with an input and output opening, an electric discharge source of ultraviolet radiation placed therein, made in the form of a tube made of a material transparent to ultraviolet radiation with electrodes at the ends, and a power supply unit equipped with a discharge initiation system and connected to the ultraviolet radiation source, wherein the tube of the ultraviolet radiation source is filled with an inert gas or air, the power supply unit contains a high-voltage current rectifier and a storage capacitor, and the discharge initiation system is made in the form of a high-voltage pulse generator, wherein the parameters of the device are interconnected by the ratio of the distance between the tube and the inner wall of the housing, the distance between the electrodes of the ultraviolet radiation source, the repetition frequency of the ultraviolet radiation pulses, the flow rate of the aqueous medium being processed, the electrical energy stored in the storage capacitor, the inner diameter of the tube of the ultraviolet radiation source, the inductance of the discharge circuit formed by the ultraviolet radiation source, the capacitance of the storage capacitor, and the cylindrical housing is made of a material opaque to A device for ultraviolet radiation, equipped with inlet and outlet ports for passing the liquid being processed (RU 2031850, 26.02.1993). The tube serves as a source of ultraviolet radiation, representing a pulsed gas discharge lamp. The ends of the tube are equipped with electrodes connected to a power supply. The power supply contains a high-voltage pulse generator. The discharge occurs in an atmosphere of air or an inert gas. The lamp has a continuous emission spectrum. A disadvantage of the device is that only a small portion of the energy emitted by the pulse lamp is selectively absorbed by organic compounds, while the majority of the energy is not expended. As a result, the efficiency of this device does not meet modern requirements.

The closest technical solution to the one presented in this description is a module for treating water with ultraviolet radiation, including a housing consisting of vertical posts and transverse bases connected to them, between which ultraviolet lamps are vertically installed in covers made of a material transparent to ultraviolet radiation, as well as a device for cleaning the lamp covers, made in the form of transverse gratings with openings for lamps, in which cleaning rings are installed, made of a material resistant to ultraviolet radiation, and installed in the housing with the ability to move relative to the lamp covers due to a connection with a moving element, made with the ability to move along a vertical guide installed in the module housing, wherein the moving element is a closed hollow cylinder connected to a hollow cylinder of a smaller diameter, fixed on the base of the housing, and made with the ability to move relative to this cylinder, and a pipe installed coaxially with the cylinders with openings made in such a way that they are inside the closed cylinder in any of its positions is used as a vertical guide. The module housing houses a UV radiation intensity sensor aimed at one of the lamps (RU 2210545, August 20, 2003 - prototype). The prototype discloses a system of modules that are sequentially installed in the treated water flow and equipped with devices for cleaning the lamp covers.

The common features of the technical solution disclosed in the prototype and the technical solution presented in this description are features that, taken together, relate to water disinfection systems. Each technical solution comprises a water disinfection module equipped with bactericidal UV lamps in quartz housings and an ultraviolet radiation sensor electrically connected to an electronic control unit. This module is located within the water conduit housing. In the prototype, the water conduit function is performed by an open-top channel or tray containing water, with vertical walls and a bottom.

The prototype includes a device for cleaning the UV lamp covers, which is due to the complex design of the unit and its relatively large dimensions, requiring a significant increase in the depth of the water channel (water conduit) in which the unit is located. Another drawback is the unsatisfactory level of water disinfection, due to the dispersion of UV radiation across the large volume of water being treated. Increasing the radiation intensity to achieve the required level of water disinfection significantly increases the energy consumption of the unit.

If the lamps are not cleaned effectively, the efficiency of the installation decreases, and to achieve the specified level of water disinfection, the energy consumption of the installation increases.

The technical result of the installation presented in this description is a reduction in the energy consumption of the installation by increasing the impact of UV radiation on the consumed volume of water in a fixed period of time.

The technical result is achieved by a water disinfection unit comprising a housing with a discharge pipe in the upper part and means for fastening the unit in its lower part in a tank with water, wherein a water disinfection module is located in the housing of the unit, which has bactericidal UV lamps in quartz cases, as well as an ultraviolet radiation sensor and a water level sensor in the module, which are connected to the controller of the unit, and the UV lamps are connected to electronic starting devices, wherein in the lower part of the housing there are side water intake windows, the branch pipe of the housing is made with a means for connecting it to the discharge pipe of the tank, the module has a cover and a bottom, in the openings of which the ends of the quartz cases are fixed, wherein the module is located inside a frame of pipes along the perimeter of the module, which are fastened with a mounting tape to prevent their vibrations, in the cover of the module there are openings for positioning the module relative to the housing and wherein the cover freely rests on the upper end of the housing of the unit.

The water disinfection module, UV lamps in quartz cases and sensors are freely installed in the housing, with the water level sensor located below the level of the lower surface of the discharge pipe.

The metal structure of the module and the unit body are made of stainless steel, and the area of the discharge pipe is larger than the total area of the side water intake windows, which are located in the lower part of the body.

Fig. 1 shows the layout of the water disinfection plant.

in a container for contaminated water.

Fig. 2 shows a water disinfection unit module.

Fig. 3 shows the installation body.

Figure 4 is a view of Figure 2.

Fig. 5 is view B of Fig. 3.

The disinfection unit contains a housing 1 (Fig. 1, 3) with a discharge pipe 2, wherein the housing 1 has in its lower part means 3 for fastening to the bottom of a tank 4, in which the housing 1 is located. The tank 4 is filled with running water to be disinfected.

The installation comprises a water disinfection module 5 (Fig. 2), which contains bactericidal UV lamps 6, each of which is located in a quartz housing 23 (Fig. 4). Module 5 has an ultraviolet radiation sensor 7, electrically connected to an electronic ballast 9 (Fig. 1). Module 5 also has a water level float sensor 8, which is also electrically connected to the electronic ballast 9. The UV lamps are also connected to the electronic ballasts.

The water level float sensor is adjusted to the upper limit of the position of each UV lamp 6, upon reaching which the water level, a command to start the lamps is sent from the sensor 8 via the electronic ballast 9. The lamps are switched off in the reverse order when there is no water movement through the outlet pipe 2 of the housing 1.

The installation is located in a body of running water flowing by gravity through a tank 4, which has a supply pipe 10 and a discharge pipe 11, which serve, respectively, to supply contaminated water to the tank 4 and to discharge disinfected water from the tank (the direction of water movement is shown in Fig. 1 by arrows).

The housing 1 of the installation has an elongated shape, open at the bottom, preferably a cylinder, and in the lower part of the housing 1 there are side water intake windows 12 (Fig. 3) through which contaminated water enters the housing 1. In the working position of the installation, the branch pipe 2 of the housing 1 is rigidly connected to the discharge pipe 11 of the tank 4.

Module 5 has an upper flange 13 (Fig. 2) at its top, onto which eyebolts 14 are secured for lowering housing 1 into tank 4 and lifting it out of the tank. The upper ends of UV lamps 6 are secured in the openings of the upper flange 13, the lower ends of which are fixed to the lower flange 15 of module 5. In the operating position of the unit, its module 5 is located in the cavity of housing 1, the upper flange 13 of module 5 rests on the end 16 of the housing (Fig. 3).

The means 3 for fastening the housing 1 (Fig. 1) are connected to the mating elements 17 made on the support plate 18, which serves to fix the lower part of the housing 1 of the installation in the working position on the cup-shaped bottom 19 of the container 4.

Flanges 13 and 15 of module 5 are connected to longitudinal elements 20 of the module, which are connected to transverse elements 21 of the module.

The elements form a lattice metal structure, within which UV lamps 6 in covers 23 and sensors 7 and 8 are located. In particular, the module is located within a frame of pipes around the perimeter of the module, with the pipes fastened with mounting tape to prevent their vibration. The outlet pipe 2 of the housing 1 has a means for attaching the housing to the outlet pipe; in particular, the outlet pipe has a flange 22 (Fig. 3) for attaching the housing 1 to the outlet pipe 11 of the tank 4. Openings are made in the module cover for positioning the module relative to the housing, and the cover freely rests on the upper end of the unit housing.

Water level sensor 8 is located below the lower surface of outlet pipe 2. The lattice metal structure of module 5 and housing 1 of the unit are made of stainless steel, with the inner surface of housing 1 and the metal structure of module 5 optionally having a UV-resistant coating. Each UV lamp 6 is housed in a quartz sheath 23, which is a sealed round tube.

Quartz housings 23 (Fig. 4) containing UV lamps are distributed in groups around the module's central axis in concentric circles, the largest of which is the largest concentric circle 24, located closer to the edge of each flange. Two concentric circles are shown in Fig. 4.

The minimum distance m between the edge of each flange 13 and 15 of the module and the outer surface of each quartz sleeve 23, located on the larger concentric circle 24, is set within the range m = (0.8-0.9)d, where d is the quartz sleeve diameter. This arrangement of quartz sleeves housing UV lamps, in combination with other features of the unit, ensures the greatest impact on the concentration of ultraviolet radiation on the water located in the space between the unit housing 1 and the module. The metal structure of the module and the unit housing are made of stainless steel. The flow area of the discharge pipe is greater than the total area of the side water intake windows, which are located in the lower part of the unit.

The installation operates as follows. Contaminated water is fed into the cavity of tank 4 (Fig. 1) through pipe 10, which fills tank 4, passes along the arrow into the cavity of housing 1 through windows 12 (Fig. 3) of housing 1, rises in this cavity to the required level, after which water level sensor 8 is triggered. At the same time, UV lamps 6 are activated by the electronic ballast 9 from the ultraviolet radiation sensor 7. Water irradiated by UV lamps 6, after its treatment with radiation, is discharged by gravity from the cavity of housing 1 through outlet pipe 2 and, further, through outlet pipe 11 into the water network of the next stage of water purification.

When the water level in housing 1 drops to the minimum level, the unit automatically shuts off. When the UV lamps' effectiveness in treating the water decreases, sensor 7 sends a signal to electronic ballast 9, which increases the UV lamps' output.

Since module 5 is located in a limited volume of water within the space bounded by the wall of housing 1, the radiation from the lamps acts on the contaminated water contained within the cavity of housing 1 of the unit. This allows the concentrated radiation beam to act exclusively on this limited volume of water within the cavity of housing 1 and not on the remaining volume of water contained in tank 4. As a result, the unit's energy consumption is reduced by increasing the concentration of UV radiation on a limited volume of water over a fixed period of time. The housing of the unit, in which the module is located, limits the volume of water being treated, thereby concentrating the increased radiation dose on this volume. Reducing the unit's energy consumption allows for a reduction in the number of UV lamps in the module.

Using a unit with several modules to disinfect the entire volume of water in tank 4 is not cost-effective, as it requires the use of multiple modules with a large number of UV lamps, which leads to a significant increase in the cost of the unit and energy consumption.

The design presented in this description is detachable, it allows you to lift the unit from the tank 4 at a lower cost, clean the housing 1 and module 5 from silt, sand and other contaminants that reduce the quality of the UV lamps.

The technical result of the system presented in this description—reducing its energy consumption by increasing the effect of UV radiation on the volume of water consumed over a fixed period of time—is achieved by exposing only the volume of water contained within the system's housing to UV radiation. This reduces energy consumption due to the ineffective UV radiation exposure of the remaining volume of water, which, as established in the prototype, passes through the water disinfection system. The technical result is positively impacted by the system's compact size, allowing it to be removed from the well containing water and its lamps to be cleaned more effectively on the well's surface. This significantly reduces the energy consumption of the purified UV lamps' radiation on the water and also contributes to a reduction in the system's energy consumption.

Claims (3)

1. A water disinfection unit comprising a housing with an outlet pipe in the upper part and fastening means in the lower part for fastening in a tank with water, wherein a water disinfection module is located in the housing, which has bactericidal UV lamps in quartz cases, as well as an ultraviolet radiation sensor and a water level sensor in the module, wherein the sensors and the UV lamps are connected to electronic control devices, characterized in that in the lower part of the housing there are side water intake windows, the housing pipe is made with a means for connecting it to the outlet pipe of the tank, the module has a cover and a bottom, in the openings of which the ends of the quartz cases are fixed, and the module is located inside a frame of pipes along the perimeter of the module, which are fastened with mounting tape to prevent their vibrations, in the cover of the module there are openings for positioning the module relative to the housing, wherein the cover freely rests on the upper end of the housing. 2. The installation according to paragraph 1, characterized in that the water disinfection module, UV lamps in quartz cases and sensors are freely installed in the housing, while the water level sensor is located below the level of the lower surface of the discharge pipe. 3. The installation according to paragraph 1, characterized in that the module and the installation body are made of stainless steel, and the area of the discharge pipe is greater than the total area of the side water intake windows, which are made in the lower part of the body.