Integrated double-sewage sterilization system

Abstract

The utility model relates to an integrated dual sewage sterilization system which comprises an ultraviolet lamp sterilization device, a calcium peroxide photocatalytic reactor and a filter, the calcium peroxide photocatalytic reactor is provided with a light-transmitting area, a light source is mounted in the light-transmitting area, and a stirrer is arranged in the calcium peroxide photocatalytic reactor; outlet water of the ultraviolet lamp sterilization device is introduced into a calcium peroxide photocatalytic reactor, and outlet water of the calcium peroxide photocatalytic reactor enters a filter to be filtered, so that sterilized produced water is obtained; or outlet water of the calcium peroxide photocatalytic reactor is connected with a filter, outlet water of the filter is connected with an ultraviolet lamp sterilization device, and sterilized produced water is obtained through sterilization. The utility model provides a dual sewage sterilization system which is used for covering pathogens of different bacteria genus in sewage and improving the sterilization efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to an integrated double sewage sterilization system. Background Art

[0002] Currently, the water treatment industry faces the dual challenges of achieving efficient disinfection while maintaining safety and environmental protection. Existing wastewater sterilization systems that use chlorine-containing compounds like chlorine and chloramines often leave water containing harmful disinfection byproducts and disinfectant residues, posing a threat to human health and safety and potentially fostering drug resistance in pathogens. Excessive use of ozone in wastewater sterilization systems can pollute the environment and react with organic matter in wastewater, causing secondary pollution.

[0003] While UV wastewater sterilization systems offer rapid disinfection and no chemical residue, their UV penetration is poor. They cannot be used in water bodies with high turbidity and high levels of suspended solids. Furthermore, UV disinfection is incomplete, leaving pathogens structurally intact and potentially revived after leaving the UV radiation range. This results in ineffective sterilization and inability to ensure water quality. Furthermore, different pathogens may be less sensitive to UV radiation. Consequently, relying solely on UV for wastewater sterilization fails to achieve a high sterilization rate.

[0004] In summary, it is necessary to provide a sewage sterilization system with the characteristics of efficient disinfection, safety and environmental protection. Utility Model Content

[0005] (1) Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an integrated dual sewage sterilization system, which solves the technical problems that the existing sterilization devices have unsatisfactory sewage sterilization effects and are prone to secondary contamination during the sterilization process.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0009] An embodiment of the utility model provides an integrated dual sewage sterilization system, which includes: an ultraviolet lamp sterilization device, a calcium peroxide photocatalytic reactor and a filter; the calcium peroxide photocatalytic reactor is provided with a light-transmitting area, the light-transmitting area is installed with a light source, and an agitator is provided inside the calcium peroxide photocatalytic reactor; the outlet water of the ultraviolet lamp sterilization device is passed into the calcium peroxide photocatalytic reactor, and the outlet water of the calcium peroxide photocatalytic reactor enters the filter for filtration to obtain sterilized water; or the outlet water of the calcium peroxide photocatalytic reactor is connected to the filter, and the outlet water of the filter is connected to the ultraviolet lamp sterilization device, and sterilized water is obtained.

[0010] According to a preferred embodiment of the present invention, the ultraviolet lamp sterilization device includes a water supply channel, the material of the water supply channel is a light-transmitting material, the water supply channel is an S-shaped curved channel, and several intervals are formed outside the S-shaped curved channel, and ultraviolet lamps are installed in the intervals.

[0011] According to a preferred embodiment of the present invention, the water channel is a wide, flat channel with a width of 20-200 cm and a thickness of 2-25 cm. A wider width ensures the channel's capacity, increasing the sterilization rate per unit volume of water. A thinner channel effectively increases the UV light's penetration rate into wastewater, thereby enhancing the sterilization effect on water with a certain degree of turbidity.

[0012] According to a preferred embodiment of the present invention, the S-shaped curved channel comprises several straight channel sections, which are arranged in parallel at intervals and then connected end to end by curved channel sections. The UV lamps are arranged parallel to the straight channel sections, and one or more UV lamps are installed in each interval. This allows the UV lamps to be located on both the front and rear sides of the straight channel sections, greatly increasing the light intensity of the UV lamps irradiating the water channel and improving sterilization efficiency.

[0013] According to a preferred embodiment of the present invention, the inner wall of the water channel is provided with an anti-corrosion and wear-resistant coating, and the wall thickness of the water channel is 3-7 mm. Preferably, the anti-corrosion and wear-resistant coating is a polypropylene coating.

[0014] According to a preferred embodiment of the present utility model, the ultraviolet lamp sterilization device, the calcium peroxide photocatalytic reactor and the filter are connected in sequence; the calcium peroxide photocatalytic reactor is also provided with a liquid inlet and a filter screen liquid outlet; the filter is provided with a water inlet and a water outlet; the filter screen liquid outlet is connected to the water inlet.

[0015] According to a preferred embodiment of the present invention, the calcium peroxide photocatalytic reactor is a hollow cylindrical structure, the light-transmitting area of ​​the calcium peroxide photocatalytic reactor is made of light-transmitting material or the entire calcium peroxide photocatalytic reactor is made of light-transmitting material, and the inner wall of the calcium peroxide photocatalytic reactor is coated with an anti-corrosion and wear-resistant coating, preferably, the anti-corrosion and wear-resistant coating is a polypropylene coating.

[0016] According to a preferred embodiment of the present invention, the light-transmitting region is a groove extending from the surface of the calcium peroxide photocatalytic reactor toward the center of the reactor, the groove extending axially or radially along the reactor. At least one light source is disposed within the groove, the light source being a visible light lamp. The radial extension may include radial extension along the circumference of the outer wall of the calcium peroxide photocatalytic reactor or radial extension in a continuous spiral. In the latter case, a flexible visible light lamp strip may be installed in a winding manner within the groove.

[0017] According to a preferred embodiment of the present invention, a coarse filtration device is provided at the water inlet side of the UV lamp sterilization device. The filtration aperture of the coarse filtration device is 50-100 μm, and the filtration aperture of the liquid outlet of the filter screen is 10-100 μm. The coarse filtration device can remove turbidity in the water and improve the sterilization effect of the UV lamp.

[0018] According to a preferred embodiment of the present invention, it also includes an integrated container-type housing; the ultraviolet lamp sterilization device, the calcium peroxide photocatalytic reactor and the filter are arranged in the integrated container-type housing; the integrated container-type housing is arranged on a vehicle-mounted device.

[0019] (3) Beneficial effects

[0020] The integrated dual sewage sterilization system of the present invention first inactivates some pathogens in sewage and reduces the activity of remaining pathogens through ultraviolet sterilization, and then further inactivates and degrades pathogens in sewage by using a variety of active substances (such as calcium hydroxide, hydrogen peroxide, negative oxygen ions, and hydroxyl free radicals) released by using calcium peroxide photocatalysis, or first uses calcium peroxide photocatalysis to achieve preliminary degradation of pathogens in sewage, reducing the biological activity and resistance of pathogens, and then inactivates residual pathogens in sewage through ultraviolet sterilization equipment. Compared with the existing technology, the integrated dual sewage sterilization system of the present invention combines the dual advantages of ultraviolet sterilization and calcium peroxide photocatalysis, ensuring water quality safety and processing speed, ensuring the safety and efficiency of the disinfection process, and no toxic by-products are generated before and after the sterilization process. It is environmentally friendly and meets modern environmental protection requirements, achieving the effect of providing a sewage sterilization system with the characteristics of efficient disinfection and safety and environmental protection.

[0021] The integrated dual sewage sterilization system of this utility model adopts an integrated design, which saves space and is easy to maintain. The entire device can be installed in an integrated container housing, which is easy to transport and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic plan view of Example 1 of the integrated dual sewage sterilization system of the present invention;

[0023] [Description of Reference Numerals]

[0024] 1-UV lamp sterilization device; 2-calcium peroxide photocatalytic reactor; 3-filter; 4-light-transmitting area; 5-light source; 6-agitator; 7-liquid inlet; 8-filter screen outlet; 9-water inlet; 10-water outlet; 11-water inlet; 12-water outlet; 13-integrated container-type shell; 14-radar level gauge; 15-slag outlet; 16-UV lamp; 17-water transfer channel; 18-first electromagnetic flowmeter; 19-second electromagnetic flowmeter; 20-third electromagnetic flowmeter. DETAILED DESCRIPTION

[0025] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0026] Example 1

[0027] like Figure 1 As shown, embodiment 1 of the present invention provides an integrated dual sewage sterilization system, comprising an ultraviolet lamp sterilization device 1, a calcium peroxide photocatalytic reactor 2 and a filter 3 connected in sequence; wherein, the calcium peroxide photocatalytic reactor 2 is provided with a light-transmitting area 4, the light-transmitting area 4 is equipped with a light source, and an agitator 6 is provided inside the calcium peroxide photocatalytic reactor 2; the outlet water of the ultraviolet lamp sterilization device 1 is passed into the calcium peroxide photocatalytic reactor 2, and the outlet water of the calcium peroxide photocatalytic reactor 2 enters the filter 3 for filtration to obtain sterilized water.

[0028] Wastewater to be sterilized first enters the UV lamp sterilization device 1 through the water inlet 9, where it undergoes preliminary UV sterilization, inactivating some pathogens and reducing the activity of remaining pathogens. This reduces the pathogen retention time in the calcium peroxide photocatalytic reactor 2, thereby improving overall process efficiency. The UV-sterilized wastewater then enters the calcium peroxide photocatalytic reactor 2 through the water outlet 10 and the liquid inlet 7. The calcium peroxide photocatalytic reactor 2 uses agitator 6 to thoroughly mix the calcium peroxide and the UV-sterilized wastewater. The calcium peroxide photocatalytic reactor 2 then further inactivates and degrades pathogens in the UV-sterilized wastewater. The further inactivated wastewater then passes through the filter outlet 8 and the water inlet 11 into the filter 3. The filter outlet 8 is located on the upper side of the bottom of the calcium peroxide photocatalytic reactor 2, preventing the calcium peroxide from entering the next stage. The calcium peroxide addition level is below the midline between the filter outlet 8 and the tank bottom to prevent the calcium peroxide from clogging the filter outlet 8. The filter 3 filters the further inactivated sewage, separates the solid impurities in the further inactivated sewage from the water body through the filter screen outlet 8, and the clean water obtained by separation is discharged from the water outlet 12.

[0029] Among them, the ultraviolet lamp sterilization device 1 includes a water supply channel 17, the material of the water supply channel 17 is a light-transmitting material, the water supply channel 17 is an S-shaped curved channel, and a plurality of intervals are formed on the outside of the S-shaped curved channel, and ultraviolet lamps 16 are arranged in the intervals. Preferably, the water supply channel 17 is a wide flat channel with a width of 20-200cm and a thickness of 2-25cm. With this special structure, the sewage to be sterilized can be squeezed into a flat shape, reducing the thickness of the water flow, improving the penetration of the ultraviolet lamp 16 on the water flow, and enhancing the sterilization effect. It is especially suitable for treating sewage with a certain turbidity. The wider flat channel can ensure a larger water flux and water treatment efficiency. Among them, the S-shaped curved channel includes a plurality of straight channel parts, the straight channel parts are arranged in parallel at intervals, and then connected end to end with the help of curved channel parts; these ultraviolet lamps 16 are arranged parallel to the straight channel parts; and one or more ultraviolet lamps 16 are arranged in each interval to evenly cover the width direction of the straight channel part. As Figure 1 As shown, a row of ultraviolet lamps 16 are provided in front and behind each straight channel section. This structure can greatly improve the utilization rate of the light energy of the ultraviolet lamp 16 and the sterilization effect on sewage. The connection structure of the curved channel section can reduce dead angles and prevent sewage from scaling inside the water channel 17. In addition, the edges and corners of the water channel 17 are connected with rounded corners, which can also reduce the generation of scaling. Among them, the inner wall of the water channel 17 is provided with an anti-corrosion and wear-resistant coating (such as a polypropylene coating), and the wall thickness of the water channel 17 is 3-7mm. The thinner the wall thickness is, the better as long as it can provide sufficient strength, thereby reducing the obstruction and absorption of ultraviolet light by the translucent material. The ultraviolet lamp 16 is arranged outside the water channel 17, which is easy to connect the circuit and make minor repairs, and does not require special waterproof materials.

[0030] The calcium peroxide photocatalytic reactor 2 is a hollow cylindrical structure. The light-transmitting area 4 of the calcium peroxide photocatalytic reactor 2 is made of a light-transmitting material or the calcium peroxide photocatalytic reactor 2 is entirely made of a light-transmitting material. The inner wall of the calcium peroxide photocatalytic reactor 2 is coated with an anti-corrosion and wear-resistant coating (such as a polypropylene coating). The light-transmitting area 4 is a groove that is recessed from the surface of the calcium peroxide photocatalytic reactor 2 to the middle of the calcium peroxide photocatalytic reactor 2. The groove extends axially or radially along the calcium peroxide photocatalytic reactor 2. At least one light source 5 is provided in the groove, and the light source 5 is a visible light lamp tube. The radial extension includes radial extension and extension along the circumferential direction of the outer wall of the calcium peroxide photocatalytic reactor or radial extension in a continuous spiral. When the groove is radial and extends in a continuous spiral, a flexible visible light light strip can be installed in the groove in a winding manner. A light source 5 is installed in the light-transmitting area 4 outside the calcium peroxide photocatalytic reactor 2, and the light source 5 can irradiate the interior of the calcium peroxide photocatalytic reactor 2 to provide photocatalytic energy. The light source 5 is arranged outside the calcium peroxide photocatalytic reactor 2, which facilitates connection and maintenance of the light source 5 to the power supply, and does not require special waterproof materials. Among them, the calcium peroxide photocatalytic reactor 2 is also provided with a liquid inlet 7 and a filter screen liquid outlet 8; the filter 3 is provided with a water inlet 11 and a water outlet 12; the filter screen liquid outlet 8 is connected to the water inlet 11. The filter pore size of the filter screen liquid outlet 8 is 10-100μm. Preferably, the calcium peroxide photocatalytic reactor 2 is made of glass or other light-transmitting materials, which is convenient for photocatalysis using natural light.

[0031] like Figure 1 As shown, the grooves extend along the axial direction of the calcium peroxide photocatalytic reactor 2. The calcium peroxide photocatalytic reactor 2 is provided with four grooves, evenly distributed on the outer wall surface of the calcium peroxide photocatalytic reactor 2. A light source 5 is installed in each light-transmitting area 4; the light source 5 is a visible light lamp. The four light sources 5 are arranged at regular intervals on the calcium peroxide photocatalytic reactor 2 to provide sufficient illumination inside the calcium peroxide photocatalytic reactor 2, accelerating the reaction speed.

[0032] The integrated dual sewage sterilization system of the present invention also includes an integrated container-type housing 13, in which the ultraviolet lamp sterilization device 1, the calcium peroxide photocatalytic reactor 2 and the filter 3 are arranged; the integrated container-type housing 13 can also be arranged on a vehicle-mounted device; the integrated integrated design saves space and facilitates maintenance. The entire device is installed in the integrated container-type housing 13, which is convenient for transportation and installation.

[0033] Preferably, a radar level meter 14 is also provided in the calcium peroxide photocatalytic reactor 2, a first electromagnetic flowmeter 18 is provided at the water inlet 9, a second electromagnetic flowmeter 19 is provided at the liquid inlet 7, and a third electromagnetic flowmeter 20 is provided at the water inlet 11. The radar level meter 14 and the electromagnetic flowmeter record various water flow data and feed them back to the operator to facilitate control and maintenance. The filter 3 is also provided with a slag outlet 15. The filter 3 filters the further inactivated sewage and separates the solid impurities in the further inactivated sewage from the water body through the filter screen liquid outlet 8, and the solid impurities are discharged from the slag outlet 15. The solid impurities include calcium peroxide and other impurities, and the calcium peroxide in the solid impurities can be recovered.

[0034] Preferably, the filter screen at the liquid outlet 8 has a pore size of 10-100 μm.

[0035] Preferably, the stirrer 6 is a paddle stirrer, a turbine stirrer or a ribbon stirrer; and the filter 3 is a centrifugal filter or a pressure filter.

[0036] In order to further treat water with higher turbidity, a coarse filtration device may be provided on the water inlet side of the ultraviolet lamp sterilization device 1 . The filter pores of the coarse filtration device are 50-100 μm to remove most of the suspended particles.

[0037] Example 2

[0038] This embodiment of the utility model provides an integrated dual sewage sterilization system. This system differs from Example 1 in that the water outlet of the calcium peroxide photocatalytic reactor 2 is connected to a filter 3, which in turn is connected to an ultraviolet lamp sterilization device 1, where sterilized water is produced. The calcium peroxide photocatalytic reactor 2, filter 3, and ultraviolet lamp sterilization device 1 are connected sequentially.

[0039] In addition, in other embodiments, the calcium peroxide photocatalytic reactor 2 can also be set at the front side, for example, the water outlet of the calcium peroxide photocatalytic reactor 2 is connected to the filter 3, and the water outlet of the filter 3 is connected to the ultraviolet lamp sterilization device 1 to obtain sterilized water after sterilization.

[0040] It should be noted that although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An integrated dual sewage sterilization system, characterized in that: The invention comprises an ultraviolet lamp sterilization device (1), a calcium peroxide photocatalytic reactor (2) and a filter (3); the calcium peroxide photocatalytic reactor (2) is provided with a light-transmitting area (4), the light-transmitting area (4) is equipped with a light source, and a stirrer (6) is provided inside the calcium peroxide photocatalytic reactor (2); the outlet water of the ultraviolet lamp sterilization device (1) is passed into the calcium peroxide photocatalytic reactor (2), and the outlet water of the calcium peroxide photocatalytic reactor (2) enters the filter (3) for filtration to obtain sterilized water; or the outlet water of the calcium peroxide photocatalytic reactor (2) is connected to the filter (3), and the outlet water of the filter (3) is connected to the ultraviolet lamp sterilization device (1), and sterilized water is obtained.

2. The integrated dual sewage sterilization system according to claim 1, characterized in that: The ultraviolet lamp sterilization device (1) comprises a water supply channel (17). The material of the water supply channel (17) is a light-transmitting material. The water supply channel (17) is an S-shaped curved channel. A plurality of spacers are formed outside the S-shaped curved channel. The ultraviolet lamps (16) are arranged in the spacers.

3. The integrated dual sewage sterilization system according to claim 2, characterized in that: The water delivery channel (17) is a wide flat channel with a width of 20-200 cm and a thickness of 2-25 cm.

4. The integrated dual sewage sterilization system according to claim 2, characterized in that: The S-shaped curved channel comprises a plurality of straight channel portions, which are arranged in parallel at intervals and then connected end to end in sequence by means of curved channel portions; the ultraviolet lamp (16) is arranged parallel to the straight channel portions; and one or more ultraviolet lamps (16) are arranged in each interval area.

5. The integrated dual sewage sterilization system according to claim 2, characterized in that: The inner wall of the water delivery channel (17) is provided with an anti-corrosion and wear-resistant coating, and the wall thickness of the water delivery channel (17) is 3-7 mm.

6. The integrated dual sewage sterilization system according to any one of claims 2 to 5, characterized in that: The ultraviolet lamp sterilization device (1), the calcium peroxide photocatalytic reactor (2), and the filter (3) are connected in sequence; the calcium peroxide photocatalytic reactor (2) is further provided with a liquid inlet (7) and a filter screen liquid outlet (8); the filter (3) is provided with a water inlet (11) and a water outlet (12); the filter screen liquid outlet (8) is connected to the water inlet (11).

7. The integrated dual sewage sterilization system according to claim 6, characterized in that: The calcium peroxide photocatalytic reactor (2) is a hollow cylindrical structure, the light-transmitting area (4) of the calcium peroxide photocatalytic reactor (2) is made of a light-transmitting material or the entire calcium peroxide photocatalytic reactor (2) is made of a light-transmitting material, and the inner wall of the calcium peroxide photocatalytic reactor (2) is coated with an anti-corrosion and wear-resistant coating.

8. The integrated dual sewage sterilization system according to claim 7, characterized in that: The light-transmitting area (4) is a groove extending from the surface of the calcium peroxide photocatalytic reactor (2) toward the middle of the calcium peroxide photocatalytic reactor (2), and the groove extends axially or radially along the calcium peroxide photocatalytic reactor (2); at least one light source (5) is provided in the groove, and the light source (5) is a visible light lamp.

9. The integrated dual sewage sterilization system according to claim 6, characterized in that: A coarse filtration device is also provided on the water inlet side of the ultraviolet lamp sterilization device (1), and the filter pores of the coarse filtration device are 50-100 μm; the filter pore diameter of the filter screen liquid outlet (8) is 10-100 μm.

10. The integrated dual sewage sterilization system according to claim 6, characterized in that: It also includes an integrated container-type housing (13); the ultraviolet lamp sterilization device (1), the calcium peroxide photocatalytic reactor (2), and the filter (3) are arranged in the integrated container-type housing (13); and the integrated container-type housing (13) is arranged on a vehicle-mounted device.

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