River sewage purification equipment and method thereof
By setting up purification equipment for multi-stage filtration and biodegradation treatment in the river channel, the problems of river sewage treatment in the prior art that the upstream pollution affects the downstream are solved, and efficient water quality purification and pollution blocking are achieved.
Patent Information
- Application Number
- CN202510108710.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-03-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing river sewage treatment technology cannot meet the emission standards after filtration, and upstream pollution is likely to quickly affect the downstream, and there is a lack of effective purification equipment and methods to block the spread of pollution.
A river sewage purification equipment was designed, including setting up purification equipment between the upstream and downstream. The equipment consists of a filter tank body, a control cabinet, a primary filter tank, a filter tank, an 1. Precision filter tank, anaerobic tank, sand filter tank, dehydration tank, flocculation tank, dosing tank and garbage storage tank. The equipment achieves multi-stage filtration and biodegradation through technical means such as mesh tracks, columnar activated carbon, precision filters and anaerobic bacteria, ensuring that water quality meets emission standards.
Through the multi-stage filtration and biodegradation treatment of this equipment, abnormal water quality upstream can be detected in a timely manner and immediately purified to ensure that the water quality discharged to the downstream meets the standards and avoid upstream pollution affecting the downstream.
Smart Images
Figure CN119612882A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the relevant technical field of river sewage treatment, and in particular relates to a river sewage purification device and a method thereof. Background Art
[0002] Most of the existing river sewage treatment requires filtration and flocculation to remove impurities, microorganisms and suspended solids in the sewage. However, in the treatment process, the sewage treatment accuracy is usually insufficient and the treatment effect is poor. The water that does not meet the discharge standard after filtration contains a lot of sludge, which is difficult to treat. In particular, once the upstream is polluted, it is easy to quickly affect the downstream. Therefore, it is particularly important to set up a purification device between the upstream and downstream, and immediately purify the upstream once pollution is found, so as to block the impact of upstream pollution on the downstream. Summary of the invention
[0003] The purpose of the present invention is to provide a river sewage purification device and method, which solves the problem that the filtered water cannot meet the standards in the existing sewage purification, and once the upstream is polluted, it is easy to quickly affect the downstream.
[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a river sewage purification device, including a purification device installed at an upstream and downstream dividing boundary, the purification device including a filter tank body and a control cabinet, a partition is arranged in the filter tank body, and the partition divides the filter tank body into a primary filter tank, a filter tank 1, a fine filter tank, an anaerobic tank, a sand filter tank, a dehydration tank, a flocculation tank, a medicine adding tank and a garbage storage tank, a water inlet pipe is arranged on the side of the primary filter tank, an electric valve 1 is arranged at one end of the water inlet pipe away from the primary filter tank, and a primary filter tank is provided with a primary filter tank. The upper half of the pool is separated into left and right baffles, a mesh track is provided on the upper left side of the primary filter pool, one end of the mesh track is sleeved on the driven shaft, and the other end of the mesh track is sleeved on the spray pipe body, the driven shaft and the spray pipe body are rotatably connected in the primary filter pool, a garbage storage pool is provided at one end of the primary filter pool away from the water inlet pipe, and the bottom of the primary filter pool is covered with columnar activated carbon; an overflow port one is provided on the side of the primary filter pool, which can overflow water into the filter pool one, and the filter pool one is provided with A peak-shaped stainless steel filter screen plate, one side of the filter tank is provided with an overflow port 2 that can overflow water into the fine filter tank, the fine filter tank is provided with a precision filter, the anaerobic tank is provided with anaerobic bacteria and a water pump 1, the water pump 1 is used to pump water in the fine filter tank into the anaerobic tank, the side of the fine filter tank is provided with an overflow port 3 that can overflow water into the sand filter tank, the side of the sand filter tank is provided with a water outlet for discharging water into the downstream, the bottoms of the primary filter tank, the filter tank 1, the fine filter tank, and the anaerobic tank are all connected The flocculation box is connected, the dosing box is connected to the flocculation box and is used for adding medicine into the flocculation box, a snail stacking machine is arranged in the dewatering box, the sewage outlet of the flocculation box is connected to the input port of the snail stacking machine, the water outlet of the flocculation box and the water outlet of the snail stacking machine are both connected to the primary filtration tank, a slag discharge pipe is arranged on the side of the dewatering box, a water quality detector for detecting the upstream water quality and an electric gate arranged at the downstream entrance are electrically connected to the control cabinet, and the electric gate is used to block the water flow upstream and downstream when the electric gate is closed.
[0005] Preferably, in order to prevent the polluted oil floating on the water surface from affecting the downstream water quality, an oil collecting pool is provided on the side of the filter tank body, an oil scraper device is provided above the primary filter tank, and an oil tank for transporting the oil to the oil collecting pool is provided on the side of the oil scraper device.
[0006] Preferably, in order to facilitate the later recycling of garbage, the top of the garbage storage pool is open, and an isolation mesh plate is provided in the garbage storage pool to separate the garbage storage pool into two layers, and the bottom of the garbage storage pool is connected to the primary filter pool.
[0007] Preferably, in order to achieve rapid and high-temperature cleaning of the mesh track and improve the cleaning effect, more than one spray hole is distributed on the spray pipe body, and a spray drive mechanism connected to the spray pipe body is provided in the sand filter tank and used to extract water in the sand filter tank and heat it before spraying it out from the spray hole. The spray drive mechanism includes two water pumps, and the output of the two water pumps is connected to a spray delivery pipe connected to the spray pipe body. More than one circle of electromagnetic heating pipes are arranged in an outer ring shape of the spray delivery pipe, and a temperature sensor is arranged in the spray delivery pipe. The temperature sensor, the electromagnetic heating pipe and the two water pumps are electrically connected to the control cabinet.
[0008] Preferably, in order to facilitate the later cleaning of garbage, a backwashing device is further provided in the sand filter tank, and the output end of the backwashing device is connected to the bottom of the primary filter tank, the first filter tank, the fine filter tank and the anaerobic tank.
[0009] Preferably, in order to improve efficiency, a scraper is provided in the primary filter tank on the left side of the baffle, close to the spray pipe body and used to scrape garbage off the mesh track.
[0010] The present invention also discloses a method for purifying river sewage, including the above-mentioned river sewage purification device, characterized in that the specific steps are as follows: S1. Pre-set water quality qualified standard thresholds, and the water quality qualified standard thresholds include water quality pH threshold, COD threshold, suspended matter threshold, ammonia nitrogen and total phosphorus threshold and BOD threshold; S2. Place a water quality detector in the upstream area to detect the water quality in the upstream area; S3, then compare it with the preset water quality qualified standard threshold, once it is found that a certain indicator exceeds the preset range, immediately open the electric valve 1 and close the electric gate; S4, at this time, the water from the upstream directly enters the primary filter tank through the water inlet pipe, and the mesh crawler is used to transport water and garbage, the garbage is isolated on the mesh crawler and transported to the garbage storage tank on the side, and the sewage enters the primary filter tank through the mesh; S5. Use the columnar activated carbon in the primary filter tank to remove impurities, adsorb organic matter, heavy metal ions and microorganisms; then enter the filter tank one through the overflow port one; use the stainless steel filter plate to filter the water for a second time; then enter the fine filter tank through the overflow port two, and use the precision filter in the fine filter tank to further remove impurities, fine particles and suspended matter in the water; S6, then enters the anaerobic tank to use anaerobic bacteria to degrade organic matter, increase the hydrolysis acidification rate, reduce the content of suspended solids, enhance the system's ability to resist shock loads, and treat high-concentration organic wastewater; S7. Finally, the clean water enters the sand filter tank for re-filtration and is discharged into the downstream through the outlet.
[0011] Preferably, a second water quality detector is provided at the water outlet.
[0012] Preferably, the electric valve 1 can operate in a periodic opening mode or in a mode of opening according to the detection condition of a water quality detector 1.
[0013] Preferably, an oil scraper is provided above the primary filter tank to collect and recover the oil floating on the surface of the primary filter tank to avoid oil contamination downstream.
[0014] The present invention has the following beneficial effects: The present invention can timely detect problems with upstream water quality, immediately filter and purify them, obtain clean and qualified water quality, and then discharge it to the downstream, further avoiding the situation that the downstream is affected by the failure to timely detect the upstream water pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A top view of a river sewage purification device in Example 1; Figure 2 This is a front schematic diagram of a river sewage purification device in Example 1; Figure 3 Schematic diagram of the exploded structure of the mesh track, driven shaft and spray pipe body in Example 1 Figure 4 This is a schematic diagram of electrical connections between the control cabinet and other components in Example 1; Figure 5 This is a schematic diagram of the connection between the spray delivery pipe and the spray hole in Example 1; Figure 6 This is a top view of a river sewage purification device in Example 2.
[0016] Reference numerals: Filter tank body 1, control cabinet 2, primary filter tank 101, filter tank 102, fine filter tank 103, anaerobic tank 104, sand filter tank 105, dehydration tank 106, flocculation tank 107, dosing box 108, garbage storage tank 109, oil collection tank 110, water inlet pipe 111, electric valve 13, baffle 4, mesh track 5, driven shaft 6, spray pipe body 7, spray hole 701, overflow port 18, stainless steel filter screen 9, Overflow port 2 10, precision filter 11, water pump 1 12, overflow port 3 13, water outlet 14, isolation mesh plate 15, oil scraper 16, oil tank 17, screw stacker 18, slag discharge pipeline 19, water quality detector 1 20, water pump 2 21, spray delivery pipe 22, electromagnetic heating pipe 23, temperature sensor 24, scraper 26, transmission motor 25, electric gate 27, water quality detector 2 28, backwashing device 29. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1
[0018] See also Figure 1-5As shown, a river sewage purification device disclosed in this embodiment includes a purification device installed at the upstream and downstream dividing boundaries, the purification device includes a filter tank body 1 and a control cabinet 2, the filter tank body 1 is provided with a partition, the partition divides the filter tank body 1 into a primary filter tank 101, a filter tank 102, a fine filter tank 103, an anaerobic tank 104, a sand filter tank 105, a dehydration tank 106, a flocculation tank 107, a dosing box 108 and a garbage storage tank 109, the primary filter tank 101 is provided with a water inlet pipe 111 on the side, the water inlet pipe 111 is provided with an electric valve 3 at one end away from the primary filter tank 101, and the primary filter tank 101 is provided with a primary filter tank 101. The upper half of the filter pool 101 is separated into baffles 4 on the left and right sides, and a mesh track 5 is provided on the upper left side of the primary filter pool 101. One end of the mesh track 5 is sleeved on the driven shaft 6, and the other end of the mesh track 5 is sleeved on the spray pipe body 7. The driven shaft 6 and the spray pipe body 7 are rotatably connected in the primary filter pool 101. A garbage storage pool 109 is provided at one end of the primary filter pool 101 away from the water inlet pipe 111, and the bottom of the primary filter pool 101 is covered with columnar activated carbon; an overflow port 8 is provided on the side of the primary filter pool 101, which can overflow water into the filter pool 102, and a peak-shaped stainless steel filter is provided in the filter pool 102. The mesh plate 9, the side of the filter tank 102 is provided with an overflow port 2 10 capable of overflowing water into the fine filter tank 103, the fine filter tank 103 is provided with a precision filter 11, the anaerobic tank 104 is provided with anaerobic bacteria and a pump 12, the pump 12 is used to pump the water in the fine filter tank 103 into the anaerobic tank 104, the side of the fine filter tank 103 is provided with an overflow port 3 13 capable of overflowing water into the sand filter tank 105, the side of the sand filter tank 105 is provided with an outlet 14 for discharging water into the downstream, the bottoms of the primary filter tank 101, the filter tank 102, the fine filter tank 103, and the anaerobic tank 104 are all connected to the flocculation box 107 The dosing box 108 is connected with the flocculation box 107 and is used for adding medicine into the flocculation box 107. A snail stacking machine 18 is arranged in the dewatering box 106. The sewage outlet of the flocculation box 107 is connected with the input port of the snail stacking machine 18. The water outlet of the flocculation box 107 and the water outlet of the snail stacking machine 18 are both connected with the primary filtration tank 101. A slag discharge pipe 19 is arranged on the side of the dewatering box 106. The control cabinet 2 is electrically connected with a water quality detector 20 for detecting the upstream water quality and an electric gate 27 arranged at the downstream entrance. When the electric gate 27 is closed, it is used to block the water flow upstream and downstream. The electric valve 3 is electrically connected to the control cabinet 2.
[0019] Preferably, in order to prevent the polluted oil floating on the water surface from affecting the downstream water quality, an oil collecting pool 110 is further provided on the side of the filter tank body 1, and an oil scraper device 16 is provided above the primary filter tank 101, and an oil tank 17 for transporting the oil to the oil collecting pool 110 is provided on the side of the oil scraper device 16.
[0020] Preferably, in order to facilitate the subsequent recycling of garbage, the top of the garbage storage pool 109 is open, and an isolation mesh plate 15 is provided in the garbage storage pool 109 to separate the garbage storage pool 109 into two layers, and the bottom of the garbage storage pool 109 is connected to the primary filter pool 101. In this embodiment, the isolation mesh plate 15 is provided in the garbage storage pool 109 to achieve solid-liquid separation of the garbage fed in, and since the top of the garbage storage pool 109 is open, it is convenient for manual collection of garbage in the subsequent period.
[0021] Preferably, in order to achieve rapid high-temperature cleaning of the mesh track 5 and improve the cleaning effect, more than one spray hole 701 is distributed on the spray pipe body 7, and a spray drive mechanism connected with the spray pipe body 7 and used to extract water in the sand filter tank 105 and spray it from the spray hole 701 after heating is provided in the sand filter 105. The spray drive mechanism includes a water pump 21 arranged in the sand filter 105, and the output of the water pump 21 is connected to a spray delivery pipe 22 connected with the spray pipe body 7. The outer ring of the spray delivery pipe 22 is provided with more than one circle of electromagnetic heating pipes 23, and a temperature sensor 24 is provided in the spray delivery pipe 22. The temperature sensor 24, electromagnetic heating tube 23 and water pump 21 are electrically connected to the control cabinet 2. In the present embodiment, a transmission motor 25 for driving the spray tube 7 to rotate is arranged on the side of the spray tube 7. When in operation, the transmission motor 25 drives the spray tube 7 to rotate, and simultaneously drives the mesh track 5 above to rotate and transport garbage. At the same time, the water in the sand filter tank 105 is extracted by the water pump 21 and added to the preset temperature through the electromagnetic heating tube 23, and then transported to the spray hole 701 to spray hot water to flush the mesh track 5, so as to avoid garbage remaining on the mesh track 5 and further improve the cleaning effect of the mesh track 5.
[0022] Preferably, in order to improve efficiency, a scraper 26 is provided in the primary filter tank 101 on the left side of the baffle 4, which is close to the spray pipe body 7 and is used to scrape the garbage off the mesh track 5. The scraper 26 is provided to quickly deliver the garbage to the garbage storage tank 109.
[0023] The present invention also discloses a method for purifying river sewage, including the above-mentioned river sewage purification device, characterized in that the specific steps are as follows: S1. Pre-set water quality qualified standard thresholds, and the water quality qualified standard thresholds include water quality pH threshold, COD threshold, suspended matter threshold, ammonia nitrogen and total phosphorus threshold and BOD threshold; S2, placing a water quality detector 20 in the upstream area to detect the water quality in the upstream area; S3, then compare with the preset water quality qualified standard threshold, once it is found that a certain indicator exceeds the preset range, immediately open the electric valve 3 and close the electric gate 27; S4, at this time, the water from the upstream directly enters the primary filter tank 101 through the water inlet pipe 111, and the mesh crawler 5 is used to transport water and garbage, and the garbage is isolated on the mesh crawler 5 and transported to the garbage storage tank 109 on the side, and the sewage enters the primary filter tank 101 through the mesh; S5, using the columnar activated carbon in the primary filter pool 101 to remove impurities, adsorb organic matter, heavy metal ions and microorganisms; then entering the filter pool 102 through the overflow port 18; using the stainless steel filter plate 9 to perform secondary filtration on the water; then entering the fine filter pool 103 through the overflow port 2 10, using the precision filter 11 in the fine filter pool 103 to further remove impurities, fine particles and suspended matter in the water; S6, then enter the anaerobic tank 104 to use anaerobic bacteria to degrade organic matter, increase the hydrolysis acidification rate, reduce the content of suspended solids, enhance the system's ability to resist shock loads, and treat high-concentration organic wastewater; S7. Finally, the clean water enters the sand filter 105 for re-filtration and is discharged into the downstream through the outlet 14.
[0024] Preferably, a water quality detector 28 is provided at the water outlet 14 , and the water quality detector 28 is used to detect the water quality of the water outlet 14 after filtration.
[0025] Preferably, the electric valve 3 can operate in a periodic opening mode or in a mode of opening according to the detection results of the water quality detector 20.
[0026] Preferably, an oil scraper 16 is provided above the primary filter tank 101 to collect and recover the oil floating on the surface of the primary filter tank 101 to avoid oil contamination downstream.
[0027] The functions of anaerobic bacteria are as follows: Degradation of organic matter: Able to degrade organic matter under anaerobic conditions, converting it into methane gas biogas and other metabolites such as acids and volatile fatty acids. This process helps to reduce organic load and pollutants in water bodies; Increase the hydrolysis and acidification rate: The acidifying bacteria in anaerobic bacteria can hydrolyze insoluble organic matter in water into soluble organic matter, and convert macromolecular organic matter that is difficult to biodegrade into small molecular substances that are easily biodegradable, thereby increasing the hydrolysis and acidification rate, improving the biodegradability of sewage, and laying the foundation for subsequent biochemical treatment; Reduce suspended solids content: By degrading organic matter, anaerobic bacteria can also reduce the content of suspended solids in water, thereby improving the transparency of the water body; Enhance the system's ability to resist shock loads: Anaerobic bacteria help improve the anaerobic system's ability to resist shock loads, promote the formation of granular sludge, and eliminate the rancidity caused by organic matter. For newly built sewage treatment plants, adding anaerobic bacteria can accelerate the start-up of new systems and enhance the system's processing capacity and shock resistance. For sewage treatment plants that operate normally, adding anaerobic bacteria can increase the diversity and total amount of microorganisms in the original sewage treatment system and improve the stability of effluent water quality; Treatment of high-concentration organic wastewater: Anaerobic bacteria are mainly used to treat wastewater with high concentrations of organic matter, such as livestock and poultry wastewater and certain parts of industrial wastewater. They can decompose organic matter in an anaerobic environment, produce methane and other gases, and effectively reduce the BOD (biological oxygen demand) and COD (chemical oxygen demand) of sewage.
[0028] The working principle of columnar activated carbon is to provide a large amount of adsorption surface through its porous structure, fix the pollutants in the water on the activated carbon through physical and chemical adsorption, so as to achieve the purpose of purifying water quality; the specific functions are as follows: Remove impurities: Columnar activated carbon can adsorb insoluble and soluble impurities in water, making the water transparent and clear.
[0029] Adsorbing organic matter: It can effectively remove organic pollutants in water and ensure the safety of drinking water23.
[0030] Remove heavy metal ions: It can absorb heavy metal ions in water and reduce potential threats to human health.
[0031] Remove residual chlorine: In tap water treatment, columnar activated carbon can absorb residual chlorine in the water to ensure water quality safety.
[0032] Absorb odor and color: It can absorb odor and color in water and improve the sensory quality of water.
[0033] The specific working principle of the present invention is as follows: a water quality detector 20 is used to detect the water quality of the upstream area; then it is compared with the preset water quality qualification standard threshold. Once it is found that a certain indicator exceeds the preset range, the electric valve 3 is immediately opened and the electric gate 27 is closed; at this time, the upstream water directly enters the primary filter tank 101 through the water inlet pipe 111, and the mesh crawler 5 is used to transport water and garbage. The garbage is isolated on the mesh crawler 5 and transported to the garbage storage tank 109 on the side. The sewage enters the primary filter tank 101 through the mesh; the columnar activated carbon in the primary filter tank 101 is used to remove impurities, adsorb organic matter, heavy metal ions and microorganisms; then it enters the filter tank 102 through the overflow port 8; the stainless steel filter screen plate 9 is used to filter the sewage. The water is filtered twice; then it enters the fine filter tank 103 through the overflow port 10, and the precision filter 11 in the fine filter tank 103 is used to further remove impurities, fine particles and suspended matter in the water; then it enters the anaerobic tank 104 to use anaerobic bacteria to degrade organic matter, increase the hydrolysis acidification rate, reduce the solid suspended matter content, enhance the system's ability to resist shock loads, and treat high-concentration organic wastewater; finally, the clean water enters the sand filter tank 105 for re-filtration and is discharged into the downstream through the outlet 14. Therefore, the present invention can promptly detect the problem of upstream water quality, immediately perform filtration and purification, and obtain clean and qualified water quality before discharging it to the downstream, further avoiding the situation that the downstream is affected by the failure to promptly detect the pollution of upstream water quality. Example 2
[0034] See also Figure 6 As shown, a river sewage purification device disclosed in this embodiment is preferably used to facilitate the later garbage cleaning. A backwashing device 29 is also provided in the sand filter tank 105. The output end of the backwashing device 29 is connected to the bottom of the primary filter tank 101, the filter tank 102, the fine filter tank 103, and the anaerobic tank 104, and an electric valve 2 is provided on the connected pipeline.
[0035] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments, any equivalent replacement of some of the technical features therein, and any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.
Claims
1. A river sewage purification device, comprising a purification device installed at an upstream and downstream dividing boundary, the purification device comprising a filter tank body (1) and a control cabinet (2), characterized in that: The filter tank body (1) is provided with a partition plate, which divides the filter tank body (1) into a primary filter tank (101), a filter tank (102), a fine filter tank (103), an anaerobic tank (104), a sand filter tank (105), a dewatering tank (106), a flocculation tank (107), a dosing tank (108) and a garbage storage tank (109). A water inlet pipe (111) is provided on the side of the primary filter tank (101). An electric valve (3) is provided at one end of the water inlet pipe (111) away from the primary filter tank (101). A baffle plate (4) is provided in the primary filter tank (101) to separate the upper half of the primary filter tank (101) into left and right sides. A filter tank (101) is provided on the upper left side. A mesh crawler (5), one end of the mesh crawler (5) is sleeved on a driven shaft (6), the other end of the mesh crawler (5) is sleeved on a spray pipe body (7), the driven shaft (6) and the spray pipe body (7) are rotatably connected in a primary filter pool (101), one end of the primary filter pool (101) away from the water inlet pipe (111) is provided with a garbage storage pool (109), the bottom of the primary filter pool (101) is covered with columnar activated carbon; an overflow port (8) is provided on the side of the primary filter pool (101) for overflowing water into a filter pool (102), a peak-shaped stainless steel filter screen plate (9) is provided in the filter pool (102), and a filter (102) is provided on the side of the filter pool (102) for overflowing water into a filter pool (102). Overflow port 2 (10) for overflowing water into the fine filter tank (103); a precision filter (11) is provided in the fine filter tank (103); anaerobic bacteria and a pumping pump 1 (12) are provided in the anaerobic tank (104); the pumping pump 1 (12) is used to pump water in the fine filter tank (103) into the anaerobic tank (104); a side of the fine filter tank (103) is provided with an overflow port 3 (13) capable of overflowing water into the sand filter tank (105); a side of the sand filter tank (105) is provided with a water outlet (14) for discharging water downstream; the bottoms of the primary filter tank (101), the filter tank 1 (102), the fine filter tank (103), and the anaerobic tank (104) are all connected to a flocculation tank (107). The dosing box (108) is connected to the flocculation box (107) and is used to add drugs to the flocculation box (107). A snail stacking machine (18) is arranged in the dewatering box (106). The sewage outlet of the flocculation box (107) is connected to the input port of the snail stacking machine (18). The water outlet of the flocculation box (107) and the water outlet of the snail stacking machine (18) are both connected to the primary filtration tank (101). A slag discharge pipe (19) is provided on the side of the dewatering box (106). A water quality detector (20) for detecting the upstream water quality and an electric gate (27) arranged at the downstream entrance are electrically connected to the control cabinet (2). When the electric gate (27) is closed, it is used to block the water flow upstream and downstream.
2. A river sewage purification device according to claim 1, characterized in that: An oil collecting pool (110) is also provided on the side of the filter tank body (1), an oil scraping device (16) is provided above the primary filter tank (101), and an oil tank (17) for conveying oil to the oil collecting pool (110) is provided on the side of the oil scraping device (16).
3. A river sewage purification device according to claim 2, characterized in that: The top of the garbage storage tank (109) is open, and an isolation mesh plate (15) is provided in the garbage storage tank (109) to isolate the garbage storage tank (109) into two layers, the bottom of the garbage storage tank (109) is connected to the primary filtering tank (101).
4. A river sewage purification device according to claim 3, characterized in that: The spray pipe body (7) is provided with more than one spray hole (701), the sand filter tank (105) is provided with a spray drive mechanism which is connected to the spray pipe body (7) and is used to extract water in the sand filter tank (105) and heat the water before spraying it out from the spray hole (701), the spray drive mechanism comprises a second pump (21), the output of the second pump (21) is connected to a spray delivery pipe (22) connected to the spray pipe body (7), the spray delivery pipe (22) is provided with more than one ring of electromagnetic heating pipes (23) in an outer ring shape, a temperature sensor (24) is provided in the spray delivery pipe (22), and the temperature sensor (24), the electromagnetic heating pipe (23) and the second pump (21) are electrically connected to the control cabinet (2).
5. The river sewage purification device according to claim 1, characterized in that: A backwashing device (29) is also provided in the sand filter tank (105), and an output end of the backwashing device (29) is connected to the bottom of the primary filter tank (101), the first filter tank (102), the fine filter tank (103), and the anaerobic tank (104).
6. The river sewage purification device according to claim 1, characterized in that: A scraper (26) is provided in the primary filtering pool (101) on the left side of the baffle (4) and is close to the spray pipe body (7) and is used to scrape garbage off the mesh crawler (5).
7. A method for purifying river sewage, comprising a river sewage purification device according to any one of claims 1 to 6, characterized in that: The specific steps are as follows: S1. Pre-set water quality qualified standard thresholds, and the water quality qualified standard thresholds include water quality pH threshold, COD threshold, suspended matter threshold, ammonia nitrogen and total phosphorus threshold and BOD threshold; S2. Place a water quality detector (20) in the upstream area to detect the water quality in the upstream area; S3, then compare it with the preset water quality qualified standard threshold, once it is found that any indicator exceeds the preset range, immediately open the electric valve 1 (3) and close the electric gate (27); S4, at this time, the water from the upstream directly enters the primary filter tank (101) through the water inlet pipe (111), and the water and garbage are transported by the mesh crawler (5), the garbage is isolated on the mesh crawler (5), and transported to the garbage storage tank (109) on the side, and the sewage enters the primary filter tank (101) through the mesh; S5, using the columnar activated carbon in the primary filter tank (101) to remove impurities, adsorb organic matter, heavy metal ions and microorganisms; then entering the filter tank one (102) through the overflow port one (8); using the stainless steel filter screen (9) to perform secondary filtration on the water; then entering the fine filter tank (103) through the overflow port two (10), and using the precision filter (11) in the fine filter tank (103) to further remove impurities, fine particles and suspended matter in the water; S6, then enters the anaerobic tank (104) to use anaerobic bacteria to degrade organic matter, increase the hydrolysis and acidification rate, reduce the content of suspended solids, enhance the system's ability to resist shock loads, and treat high-concentration organic wastewater; S7. Finally, the clean water enters the sand filter (105) for further filtration and is discharged to the downstream through the outlet (14).
8. A method for purifying river sewage according to claim 7, characterized in that: A second water quality detector (28) is provided at the water outlet (14).
9. A method for purifying river sewage according to claim 7, characterized in that: The electric valve 1 (3) can operate in a periodic opening mode or in a mode of opening according to the detection condition of the water quality detector 1 (20).
10. A method for purifying river sewage according to claim 7, characterized in that: An oil scraping device (16) is provided above the primary filter tank (101) to collect and recycle the oil floating on the surface of the primary filter tank (101), thereby preventing the oil from polluting the downstream.