A dual-mode low-carbon operation river and lake ecological water purification device and method

Abstract

A dual-mode low-carbon operation river and lake ecological water quality purification device and method thereof, relating to the technical field of sewage treatment, wherein the dual-mode low-carbon operation river and lake ecological water quality purification device comprises a comprehensive equipment room, a sedimentation system, a selection tank, a biological bed incubator, a water collection tank, precision filtration, a sludge tank, a sludge dehydration room and partitions constituting each interval. The present invention combines high-efficiency sedimentation, high-flow rate aeration biological bed incubator and deep filtration process technology, takes the microbial bed incubator to breed and expand microorganisms, and increase the biomass of river and lake water as the core, and has two operation modes of purifying water quality and rapidly improving filtration, so as to achieve low-carbon operation, rapidly purify water quality and improve the ecological environment. The device is suitable for application in micro-polluted water environments of rivers and lakes, especially for high-algae and low-turbidity water in rivers and lakes, and has a remarkable effect.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and more specifically, to a dual-mode low-carbon operation river and lake ecological water purification device and method thereof. Background Art

[0002] At present, pollutants such as COD, ammonia nitrogen, total phosphorus, total nitrogen, suspended solids and algae in river and lake water bodies exceed the standard seriously, and various river and lake water purification equipment has emerged. Such as "magnetic coagulation purification equipment", "micro-sand sedimentation purification equipment", "various filtration purification equipment", "aeration and oxygenation equipment" and various chemical agents. The above equipment has a good effect on the removal of total phosphorus and suspended solids in polluted water bodies, and also has a certain removal effect on COD and algae, but it is powerless against ammonia nitrogen and total nitrogen organic matter in water bodies. While using chemical agents to remove organic matter, secondary pollution is generated. The large-scale use of aeration and oxygenation equipment has high operating energy consumption and produces carbon emissions. For this reason, it is urgent to study a multifunctional water purification equipment that can not only remove algae, suspended solids, total phosphorus and other substances in water bodies, but also degrade ammonia nitrogen and total nitrogen organic matter in water bodies, while adding microorganisms to water bodies and operating at a low carbon level.

[0003] Therefore, in view of this situation, the present invention proposes a dual-mode low-carbon operation river and lake ecological water purification device, especially for high-algae and high-turbidity water in rivers and lakes with large water treatment capacity, high-algae and low-turbidity water, black and smelly water, slightly polluted water and other water bodies, a dual-mode low-carbon operation purification method is adopted to remove organic matter from polluted water while circulating and purifying water quality, adding a large number of microbial flora to the water body, so as to increase the density of microbial flora in the water body and quickly degrade organic matter. The low-carbon operation mode is divided into a conventional operation mode and an emergency high-speed rapid filtration mode, which aims to remove pollution to river and lake water bodies caused by rainy season floods, water pollution accidents, etc., and quickly remove sediment and suspended matter, quickly restore water ecology, and purify water quality. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The present invention aims to solve the problems that the existing water treatment devices are incapable of removing ammonia nitrogen and total nitrogen organic matter in the water body, and secondary pollution is generated while using chemical agents to remove organic matter. The large amount of aeration and oxygenation equipment used has high operating energy consumption and generates carbon emissions.

[0006] (II) Technical solution

[0007] The purpose and efficacy of the dual-mode low-carbon operation river and lake ecological water quality purification device and method of the present invention are achieved by the following specific technical means: a dual-mode low-carbon operation river and lake ecological water quality purification device, including a comprehensive equipment room, the present invention also includes a sedimentation system, a selection tank, a biological bed incubator, a water collection tank, precision filtration, a sludge tank and a sludge dewatering room.

[0008] Furthermore, the comprehensive equipment room includes a cyclone sand-water separator, a sewage lifting inlet pipe is arranged on the left side of the cyclone sand-water separator, and a sand collecting hopper is arranged at the bottom thereof, a sand-water separator outlet pipe is arranged on the right side, a static mixer is arranged at the other end of the sand-water separator outlet pipe, a water supply pipe is arranged on the right side of the static mixer, the static mixer is fixedly connected to the coagulant dosing device through the coagulant dosing pipe, the comprehensive equipment room also includes a coagulant supply pipe, a coagulant dosing device, a blower, a PLC control box, a fan air supply pipe and a precision filter, the coagulant dosing device is provided with a coagulant supply pipe, and the blower is provided with a fan air supply pipe.

[0009] Furthermore, the sedimentation tank system includes a sedimentation tank baffle, a selection tank baffle and a sedimentation tank cone, a selection tank baffle and a sedimentation tank cone, a sedimentation tank stirring device is arranged in the sedimentation tank central tube, and inclined tubes are also arranged on the left and right sides of the accommodating cavity, a water outlet trough is arranged above the selection tank baffle, a sedimentation tank outlet pipe is arranged on the right side of the selection tank baffle at the water outlet trough, a sedimentation tank cone, and a mud and sand outlet pipe The other end is fixedly connected with a micro-sand circulation pump, and the other end of the micro-sand circulation pump is connected to a cyclone mud and sand diversion device through a cyclone mud and sand inlet pipe. A micro-sand adding bucket is arranged above the cyclone mud and sand diversion device, and is fixedly connected to the sedimentation tank central tube through a pipeline mixer at the bottom. The right end of the coagulant supply pipe is connected to the sedimentation tank central tube through the pipeline mixer, and the right side of the water supply pipe is fixedly connected to the sedimentation center tube. A sludge pipe is arranged on the cyclone mud and sand diversion device, and the other end of the sludge pipe leads to the sludge tank.

[0010] Furthermore, the selection pool includes a bio-bed incubator partition, and the bio-bed incubator partition and the selection pool partition form a chamber. A lifting pump is arranged in the chamber, and the lifting pump is fixedly connected to the precision filter through a precision filter water inlet pipe. A precision filter water outlet pipe is arranged at the output end of the precision filter, and a selection pool water inlet pipe is arranged above the selection pool.

[0011] Furthermore, the bio-bed incubator includes a water collection pool partition, which together with the bio-bed incubator partition form a chamber, wherein a layer filter plate is arranged on the upper side of the chamber, and a lower water distribution plate of the bio-bed incubator is arranged on the lower side, a lightweight filter material is arranged between the layer filter plate and the lower water distribution plate of the bio-bed incubator, a plurality of upper water distribution filter heads are arranged on the layer filter plate, a plurality of lower water distribution filter heads are arranged on the lower water distribution plate of the bio-bed incubator, a middle partition is arranged between the layer filter plate and the lower water distribution plate of the bio-bed incubator to divide the space into left and right parts, a microorganism releaser and a bio-bed incubator aeration device are arranged in the spaces on both sides, and a The guide pipe, the outlet at the lower end of the guide pipe is located below the lower water distribution plate of the bio-bed incubator, the water outlet pipe of the precision filter is connected to the guide pipe, the upper branches of the fan air supply pipe are respectively provided with the bio-bed incubator aeration device air supply pipe, the microorganism releaser air supply pipe and the bio-bed incubator air supply pipe, the bio-bed incubator aeration device air supply pipe is connected to the bio-bed incubator aeration device on the right, the bio-bed incubator air supply pipe is connected to the bio-bed incubator aeration device on the left, the microorganism releaser air supply pipe is connected to the microorganism releaser, a backwash water drain outlet is arranged below the bio-bed incubator, and a high-position water outlet weir trough and a low-position water outlet weir trough are respectively arranged above and below the water collection tank partition.

[0012] Furthermore, the water collection pool includes a precision filter partition, and the precision filter partition and the water collection pool partition form a cavity, a water collection pool lifting pump is arranged at the bottom of the cavity, a water collection pool lifting pump water supply pipe is arranged on the water collection pool lifting pump, two branches are arranged on the water collection pool lifting pump water supply pipe, and the water collection pool inlet pipe and the backwash water pipe are respectively fixedly connected, and the outlet of the backwash water inlet pipe is located above the biological bed incubator, and a water collection pool outlet weir is arranged on the upper side of the precision filter partition. A guide pipe is arranged on the right side of the water collection pool outlet weir.

[0013] Furthermore, the precision filter tank includes a sludge tank partition, and the sludge tank partition and the precision filter tank partition form a cavity, in which a fiber filtering device is arranged, an outlet weir is arranged on the upper side of the sludge tank partition, and a clean water outlet pipe is arranged on the right side of the outlet weir.

[0014] Furthermore, the sludge pool includes a sludge dewatering room partition, the sludge dewatering room partition and the sludge pool partition form a cavity, a sludge suction pump is arranged in the cavity, and a sludge suction pump mud supply pipe is arranged on the sludge suction pump.

[0015] Furthermore, the sludge dewatering room includes a sludge dewatering machine, a sludge suction pump sludge supply pipe is connected to the inlet of the sludge dewatering machine, a sludge discharge hopper and a sludge dewatering machine water discharge outlet are provided on the sludge dewatering machine, and a flocculant dosing device is also provided in the sludge dewatering room, and the flocculant dosing device is connected to the inlet of the sludge dewatering machine together with the sludge suction pump sludge supply pipe through a pipeline.

[0016] The present invention also provides a dual-mode low-carbon operation river and lake ecological water purification method, including the following modes:

[0017] S1: Mode 1 is the normal operation mode, specifically, polluted river and lake water is lifted by the lifting pump and enters the sand-water separator through the water inlet pipe. The separated water enters the sedimentation tank through the static mixer and the water supply pipe for sedimentation and separation treatment. The effluent from the sedimentation tank passes through the selection tank and can be directly discharged back to the river and lake. The microbial releaser in the bio-bed incubator bed body rapidly reproduces and releases microbial biological cells and puts them into the water body to increase the microbial flora of the water body and improve the bottom mud ecological environment. The effluent can also continue to enter the precision filter tank through the water collection tank for deep purification of the water body, thereby purifying the water quality;

[0018] S2: Mode 2 is the high-speed rapid filtration mode. Specifically, polluted river and lake water is lifted by a lifting pump and enters the sand-water separator through the water inlet pipe. The separated water enters the sedimentation tank through the static mixer and the water supply pipe for sedimentation and separation treatment. Part of the effluent from the sedimentation tank passes through the selection tank and is directly discharged back to the river and lake. The other part of the effluent from the sedimentation tank directly enters the water collection tank for deep purification treatment. The water output at this time is more than 5-10 times that of mode 1, which can meet the purpose of quickly removing silt and suspended matter, and quickly restoring water quality and purifying water quality in the event of floods and pollution accidents in the rainy season that pollute river and lake water bodies. Beneficial Effects

[0019] 1. The present invention provides a dual-mode low-carbon operation river and lake ecological water purification device, which adopts high-efficiency sedimentation, high-flow rate aerated biological filter (biological bed incubator) and deep filtration process technology to achieve the purpose of quickly purifying slightly polluted water in rivers and lakes, removing COD, ammonia nitrogen, total phosphorus, algae and other organic matter in the water body, and repairing the river and lake water ecosystem.

[0020] 2. The present invention provides a dual-mode low-carbon operation river and lake ecological water purification device. By setting a microbial releaser, a large number of microorganisms are propagated and expanded and released into natural water bodies to enhance the microbial density of the water body and further purify the water quality.

[0021] 3. The present invention provides a dual-mode low-carbon operation river and lake ecological water purification method. Through dual-mode low-carbon operation, it is suitable for different environmental emergency management needs and can purify water efficiently and quickly.

[0022] 4. The present invention provides a dual-mode low-carbon operation river and lake ecological water purification device, which uses a fiber filter cloth filter tank for deep treatment, has high filtration accuracy and good effluent water quality.

[0023] 5. The present invention provides a dual-mode low-carbon operation river and lake ecological water purification device. The remaining sludge is purified synchronously in the sludge dewatering room, and the system does not produce secondary pollution.

[0024] 6. The present invention provides a dual-mode low-carbon operation river and lake ecological water purification device with compact layout, integrated design, small footprint, and investment saving. It also has intelligent control, can be unattended, and has simple operation and maintenance management. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view schematic diagram of the present invention as a whole.

[0026] Figure 1 In: 1-integrated equipment room, 101-sewage lifting water inlet pipe, 102-cyclone sand and water separator, 103-sand collecting hopper, 104-sand and water separator outlet pipe, 105-static mixer, 106-water supply pipe, 107-coagulant supply pipe, 108-coagulant dosing device, 109-coagulant dosing pipe, 110-coagulant dosing device, 111-blower, 112-PLC control box, 113-blower air supply pipe, 2-precipitator system, 201-inclined pipe, 202-precipitator stirring device, 203-water outlet trough, 204-selection tank baffle, 205-precipitator outlet pipe, 206-precipitator center tube, 207-mud and sand outlet pipe, 208-precipitator cone, 209-micro sand circulation pump, 210-pipeline mixer, 211-sedimentation tank baffle, 212-cyclone mud sand inlet pipe, 213-cyclone mud sand diversion device, 214-micro sand adding bucket, 215-sludge pipe, 3-selection tank, 301-lifting pump, 302-precision filter inlet pipe, 303-precision filter outlet pipe, 304-precision filter, 305-biological bed incubator baffle, 4-biological bed incubator, 401-guiding pipe, 402-upper water distribution filter head, 403-light filter material, 404-microorganism releaser, 405-biological bed incubator lower water distribution plate, 406-backwash water drain, 407-lower water distribution filter head, 408-biological bed incubator aeration device air supply pipe, 409-middle baffle, 410-biological bed incubator aeration device, 411-microorganism releaser air supply pipe, 412-air supply pipe of biological bed incubator, 413-layer filter plate, 414-high-level outlet weir, 415-low-level outlet weir, 416-water collection pool partition, 5-water collection pool, 501-water collection pool lifting pump, 502-water collection pool lifting pump water supply pipe, 503-backwash water pipe, 504-selection pool inlet pipe, 505-water collection pool outlet weir, 506-diversion pipe, 507-precision filter pool partition, 6-precision filtration, 601-fiber filtration device, 602-outlet weir, 603-sludge pool partition, 604-clean water outlet pipe, 7-sludge tank, 701-sludge suction pump, 702-sludge dewatering room partition, 703-sludge suction pump mud supply pipe, 8-sludge dewatering room, 801-sludge dewatering machine, 802-sludge discharge hopper, 803-sludge dewatering machine water outlet, 804-flocculant dosing device, 805-pipeline. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] As attached Figure 1 As shown, a dual-mode low-carbon operation river and lake ecological water purification device includes an integrated equipment room 1, a sedimentation system 2, a selection tank 3, a biological bed incubator 4, a water collection tank 5, a precision filter 6, a sludge tank 7 and a sludge dewatering room 8.

[0029] Among them, each unit of the present invention is composed of the above-mentioned integrated device through the sedimentation tank partition 211, the selection tank partition 204, the biological bed incubator partition 305, the water collection tank partition 416, the precision filter tank partition 507, the sludge tank partition 603, and the sludge dewatering room partition 702. The material can be selected from carbon steel anti-corrosion material, and the exterior requires insulation treatment.

[0030] Among them, the comprehensive equipment room 1 includes a cyclone sand-water separator 102, a sewage lifting inlet pipe 101 is arranged on the left side of the cyclone sand-water separator 102, and a sand collecting bucket 103 is arranged at the bottom, and a sand-water separator outlet pipe 104 is arranged on the right side, and a static mixer 105 is arranged at the other end of the sand-water separator outlet pipe 104, and a water supply pipe 106 is arranged on the right side of the static mixer 105. The static mixer 105 is fixedly connected with the coagulant dosing device 110 through a coagulant dosing pipe 109. The comprehensive equipment room 1 also includes a coagulant supply pipe 107, a coagulant dosing device 108, a blower 111, a PLC control box 112, a fan air supply pipe 113 and a precision filter 304. The coagulant dosing device 108 is provided with a coagulant supply pipe 107, and the blower 111 is provided with a fan air supply pipe 113.

[0031] The precipitator system 2 includes a precipitator baffle 211, a selection tank baffle 204 and a precipitator cone 208. The precipitator baffle 211, the selection tank baffle 204 and the precipitator cone 208 form a receiving cavity, in which a precipitator central cylinder 206 is arranged. A sedimentation device stirring device 202 is arranged in the middle, and inclined pipes 201 are also arranged on the left and right sides of the accommodating cavity. A water outlet trough 203 is arranged above the selection tank baffle 204, and a sedimentation device outlet pipe 205 is arranged on the right side of the selection tank baffle 204 at the water outlet trough 203. A mud and sand outlet pipe 207 is arranged at the bottom of the sedimentation device cone 208, and the other end of the mud and sand outlet pipe 207 is fixedly connected to a micro-sand circulation pump 209, and the other end of the micro-sand circulation pump 209 is connected to a cyclone mud and sand diversion device 213 through a cyclone mud and sand inlet pipe 212. A micro-sand adding bucket 214 is arranged above the cyclone mud and sand diversion device 213, and the lower part is fixedly connected to the sedimentation device center tube 206 through a pipeline mixer 210, and a coagulant supply pipe 107 is arranged. The right end is connected to the sedimentation center tube 206 through the pipeline mixer 210, and the right side of the water supply pipe 106 is fixedly connected to the sedimentation center tube 206. A sludge pipe 215 is provided on the cyclone mud and sand diversion device 213, and the other end of the sludge pipe 215 leads to the sludge pool 7.

[0032] Among them, polluted river and lake water is lifted by a lifting pump and enters the cyclone sand and water separator 102 through the sewage lifting inlet pipe 101. The separated water enters the sedimentation tank center tube 206 through the static mixer 105 and the water supply pipe 106 for sedimentation and separation treatment. The mud and sand separated by the cyclone sand and water separator 102 enters the sand collecting hopper 103 for temporary storage and discharge.

[0033] The coagulant enters the static mixer 105 through the coagulant dosing device 110, is mixed with the incoming water and enters the central tube 206 of the sedimentation tank. Specifically, the coagulant can be one or a mixture of aluminum salts or iron salts such as polyaluminum chloride, polyferric sulfate, and ferric chloride.

[0034] The coagulant enters the central tube 206 of the precipitator through the coagulant dosing device 108, the coagulant supply pipe 107 and the pipeline mixer 210. Specifically, the coagulant is anionic polyacrylamide with a molecular weight of 12,000 units.

[0035] Among them, the PLC electric control box 112 controls the water inlet pump, electric valve, dosing device, stirring motor, micro-sand circulation pump 209, blower 111, sludge dewatering machine 801 and other devices of the device system to achieve intelligent control, unmanned operation and reduce energy consumption.

[0036] Among them, the sedimentation system 2 has a built-in inclined tube 201 with a diameter of 80 mm and a built-in micro-sand circulation sedimentation system to accelerate flocculation sedimentation separation. The micro-sand and sludge bucket mixture deposited at the bottom of the sedimentation tank is lifted to the cyclone sediment diversion device 213 by the micro-sand circulation pump 209 for sediment and sand separation. The separated micro-sand is recycled, and the separated sludge enters the sludge tank 7. Specifically, the micro-sand is refined quartz sand with a particle size of 150 um.

[0037] After passing through the sedimentation tank system 2 , the water flows through the water outlet trough 203 and the sedimentation tank outlet pipe 205 and enters the selection tank 3 .

[0038] Among them, the selection pool 3 includes a bio-bed incubator partition 305, and the bio-bed incubator partition 305 and the selection pool partition 204 form a chamber. A lifting pump 301 is arranged in the chamber. The lifting pump 301 is fixedly connected to the precision filter 304 through a precision filter inlet pipe 302. A precision filter outlet pipe 303 is arranged at the output end of the precision filter 304, and a selection pool inlet pipe 504 is arranged above the selection pool 3.

[0039] Among them, the selection pool 3 has two operating modes. One is that the water stored in the selection pool 3 enters the bio-bed incubator 4 for treatment through the diversion pipe 401. The other is that when the effluent from the sedimentation tank 3 contains suspended matter, it is lifted by the lifting pump 301 and enters the precision filter 304 through the precision filter inlet pipe 302, and then enters the bio-bed incubator 4 for treatment through the precision filter outlet pipe 303 and the diversion pipe 401.

[0040] Among them, the bio-bed incubator 4 includes a water collection pool partition 416, and the water collection pool partition 416 and the bio-bed incubator partition 305 form a chamber, a layer filter plate 413 is arranged on the upper side of the chamber, and a bio-bed incubator lower water distribution plate 405 is arranged on the lower side, a lightweight filter material 403 is arranged between the layer filter plate 413 and the bio-bed incubator lower water distribution plate 405, a plurality of upper water distribution filter heads 402 are arranged on the layer filter plate 413, and a plurality of lower water distribution filter heads 407 are arranged on the bio-bed incubator lower water distribution plate 405. A middle partition 409 is arranged between the layer filter plate 413 and the bio-bed incubator lower water distribution plate 405 to divide the space into left and right parts, and a microorganism releaser 404 and a bio-bed incubator aeration device 410 are arranged in the left and right spaces, and a guide pipe is arranged on the right side above the bio-bed incubator partition 305. 401, the outlet of the lower end of the guide pipe 401 is located below the lower water distribution plate 405 of the bio-bed incubator, the precision filter outlet pipe 303 is connected to the guide pipe 401, and the upper branches of the fan air supply pipe 113 are respectively provided with a bio-bed incubator aeration device air supply pipe 408, a microorganism releaser air supply pipe 411 and a bio-bed incubator air supply pipe 412, the bio-bed incubator aeration device air supply pipe 408 is connected to the bio-bed incubator aeration device 410 on the right, the bio-bed incubator air supply pipe 412 is connected to the bio-bed incubator aeration device 410 on the left, the microorganism releaser air supply pipe 411 is connected to the microorganism releaser 404, a backwash water drain 406 is provided below the bio-bed incubator 4, and a high-position water outlet weir 414 and a low-position water outlet weir 415 are respectively provided above and below the water collecting pool partition 416.

[0041] The water collection pool 5 includes a precision filter partition 507, which forms a cavity with the water collection pool partition 416. A water collection pool lifting pump 501 is provided at the bottom of the cavity. A water collection pool lifting pump water supply pipe 502 is provided on the water collection pool lifting pump 501. Two branches are provided on the water collection pool lifting pump water supply pipe 502, which are respectively fixed with a water collection pool inlet pipe 504 and a backwash water pipe 503. The outlet of the backwash water inlet pipe 503 is located above the biobed incubator 4. A water collection pool outlet weir 505 is provided on the upper side of the precision filter partition 507. A guide pipe 506 is provided on the right side of the water collection pool outlet weir 505.

[0042] Among them, in the biological bed incubator 4, the treated water enters through the lower water distribution filter head 407 in an upflow manner, passes through the lightweight filter material 403, and is discharged through the upper water distribution filter head 402 to the upper end of the biological bed incubator 4 for water storage, and then enters the collection tank 5 through the low liquid level outlet weir 415. When the water inlet mode adopts the water inlet mode of the lifting pump 301, the outlet water adopts the high level outlet weir 414 outlet mode to enter the collection tank 5.

[0043] Among them, in the bio-bed incubator 4, the water distribution filter head is a short-handled filter head, the filler is a lightweight filter material 403, the density after immersion in water is 1.0kg / cm3, the height of the biofilter bed is 1.5m, and a bio-bed incubator aeration device 410 is arranged at the bottom one-third of the biofilter bed, and a microorganism releaser 404 is arranged at the upper one-third of the biofilter bed. The air required for aeration comes from the blower 111 in the equipment room, part of which enters the bio-bed incubator aeration device 410 through the bio-bed incubator air supply pipe 412, and part of which enters the microorganism releaser 404 through the microorganism releaser air supply pipe 411, so as to continuously activate and reproduce microorganisms and provide them to the water body, thereby increasing the amount of microorganisms in the water body.

[0044] Among them, the bio-bed incubator 4 is divided into two reaction areas by the middle partition 409. When the bio-bed incubator 4 is blocked by suspended matter and biofilm and affects the water output, the bio-bed incubator 4 needs to be backwashed. The backwash water source comes from the upper water collection area of ​​the biological filter bed. Automatic gravity backwashing is achieved by opening the bottom drain valve 406. There are three ways to backwash. One is to backwash the two bio-beds separately, the second is to backwash the two bio-beds simultaneously, and the third is that when the backwash water volume is insufficient, the water collection tank lifting pump 501 in the water collection tank 5 can be started, and the water is pumped into the upper water collection area of ​​the biological filter bed through the water collection tank lifting pump water supply pipe 502 and the backwash water pipe 503. Air washing, water washing, and air-water combined backwashing methods can be used for backwashing.

[0045] When the effluent quality of the bio-bed incubator 4 is poor, the water collection tank booster pump 501 in the water collection tank 5 can be started to boost the water to flow back to the selection tank 3 through the water collection tank booster pump water supply pipe 502 and the water collection tank inlet pipe 504 for further circulation treatment.

[0046] The water collection tank 5 stores the treated water from the bio-bed incubator and serves as a backwash supplementary water source. The effluent from the water collection tank flows into the precision filter tank 6 by gravity through the effluent weir 505 and the guide pipe 506 .

[0047] Among them, the precision filter tank 6 includes a sludge tank partition 603, and the sludge tank partition 603 and the precision filter tank partition 507 form a cavity. A fiber filtering device 601 is arranged in the cavity. An outlet weir 602 is arranged on the upper side of the sludge tank partition 603, and a clean water outlet pipe 604 is arranged on the right side of the outlet weir 602.

[0048] Among them, in the precision filter tank 6, the fiber filtering device 601 can use a rotating disk fiber filter or a fixed disk fiber filter. The filtering accuracy of the filter is less than 10um. The filtered water is discharged back to the river or lake through the outlet weir 602 and the clean water outlet pipe 604 to circulate and purify the water body.

[0049] The sludge pool 7 includes a sludge dewatering room partition 702 , and the sludge dewatering room partition 702 and the sludge pool partition 603 form a cavity, in which a sludge suction pump 701 is arranged, and a sludge suction pump mud supply pipe 703 is arranged on the sludge suction pump 701 .

[0050] Among them, in the sludge pool 7, the muddy water generated by the front-end sedimentation system 2 is separated by the cyclone mud and sand diversion device 213, and then enters the sludge pool 7 through the sludge pipe 215. The backwash muddy water of the biological bed incubator 4 also returns to the sludge pool 7, and the supernatant of the sludge pool 7 is returned to the precision filter 6 for filtration and treatment.

[0051] Among them, the sludge dewatering room 8 includes a sludge dewatering machine 801, a sludge suction pump mud supply pipe 703 is connected to the inlet of the sludge dewatering machine 801, a sludge discharge bucket 802 and a sludge dewatering machine water discharge outlet 803 are provided on the sludge dewatering machine 801, and a flocculant dosing device 804 is also provided in the sludge dewatering room 8. The flocculant dosing device 804 is connected to the inlet of the sludge dewatering machine 801 together with the sludge suction pump mud supply pipe 703 through a pipeline 805.

[0052] The sludge in the sludge pool 7 is lifted by the sludge suction pump 701 and enters the sludge dewatering machine 801 for treatment through the sludge suction pump sludge supply pipe 703.

[0053] Among them, the sludge dewatering machine 801 in the sludge dewatering room 8 is a screw-type sludge dewatering machine. The flocculant passes through the flocculant dosing device 804, is mixed with the sludge in the sludge pool 7 through the pipeline 805, and enters the sludge dewatering machine 801 for treatment. After treatment, the sludge is discharged from the sludge discharge hopper 802, and the flushing water of the sludge dewatering machine 801 returns to the sludge pool through the sludge dewatering machine water outlet 803.

[0054] The present invention also provides a dual-mode low-carbon operation river and lake ecological water purification method, including the following modes:

[0055] S1: Mode 1 is the normal operation mode, specifically, polluted river and lake water is lifted by the lifting pump and enters the sand-water separator 102 through the water inlet pipe 101. The separated water enters the sedimentation tank 2 through the static mixer 105 and the water supply pipe 106 for sedimentation and separation treatment. The effluent from the sedimentation tank 2 enters the biological bed incubator 4 through the selection tank 3. The effluent can be directly discharged back to the river and lake. The microbial releaser 404 in the bed of the biological bed incubator 4 rapidly reproduces and releases microbial biological cells, which are put into the water body to increase the microbial flora of the water body and improve the bottom mud ecological environment. The effluent can also continue to enter the precision filter 6 through the water collection tank 5 to perform deep purification treatment on the water body, thereby purifying the water quality;

[0056] S2: Mode 2 is a high-speed rapid filtration mode, specifically, polluted river and lake water is lifted by a lifting pump and enters the sand-water separator 102 through the water inlet pipe 101. The separated water enters the sedimentation tank 2 through the static mixer 105 and the water supply pipe 106 for sedimentation and separation treatment. A part of the effluent from the sedimentation tank 2 enters the bio-bed incubator 4 through the selection tank 3, and the effluent is directly discharged back to the river and lake, and the other part of the effluent from the sedimentation tank 2 directly enters the water collection tank 5 and the precision filter tank 6 for deep purification treatment. The water output at this time is more than 5-10 times that of mode 1, which can meet the purpose of quickly removing silt and suspended matter, and quickly restoring the water quality and purifying the water quality in the event of floods and pollution accidents in the rainy season that pollute the river and lake water bodies.

Claims

1. A dual-mode low-carbon operation river and lake ecological water purification device, comprising a comprehensive equipment room (1), characterized in that: The integrated equipment room (1) further comprises a sedimentation system (2), a selection tank (3), a biological bed incubator (4), a water collection tank (5), a precision filter tank (6), a sludge tank (7) and a sludge dewatering room (8). The integrated equipment room (1) comprises a cyclone sand-water separator (102). A sewage lifting water inlet pipe (101) is arranged on the left side of the cyclone sand-water separator (102), and a sand collecting hopper (103) is arranged at the bottom thereof. A sand-water separator outlet pipe (104) is arranged on the right side. A static mixer (105) is arranged at the other end of the sand-water separator outlet pipe (104). A water supply pipe (106) is arranged on the right side of the static mixer (105). The static mixer (105) is connected to the coagulant dosing device (109) via a coagulant dosing pipe (109). The integrated equipment room (1) further comprises a coagulant supply pipe (107), a coagulant dosing device (108), a blower (111), a PLC control box (112), a fan air supply pipe (113) and a precision filter (304); the coagulant dosing device (108) is provided with a coagulant supply pipe (107); the blower (111) is provided with a fan air supply pipe (113); the precipitator system (2) comprises a precipitator baffle (211), a selection tank baffle (204) and a precipitator cone (208); the precipitator baffle (211), the selection tank baffle (204) and the precipitator cone (208) constitute a containing cavity, in which a precipitator is provided. A central tube (206), wherein a sedimentator stirring device (202) is arranged in the sedimentator central tube (206), inclined tubes (201) are also arranged on the left and right sides of the accommodating cavity, a water outlet trough (203) is arranged above the selection tank baffle (204), a sedimentator water outlet pipe (205) is arranged on the right side of the selection tank baffle (204) at the water outlet trough (203), a mud and sand outlet pipe (207) is arranged at the bottom of the sedimentator cone (208), the other end of the mud and sand outlet pipe (207) is fixedly connected to a micro-sand circulation pump (209), the other end of the micro-sand circulation pump (209) is connected to a cyclone mud and sand diversion device (213) through a cyclone mud and sand inlet pipe (212), and the cyclone mud and sand diversion device (213) is connected to the micro-sand circulation pump (209). 3) A micro-sand adding bucket (214) is provided on the top, and is fixedly connected to the central cylinder (206) of the sedimentation tank via a pipeline mixer (210) at the bottom; the right end of the coagulant supply pipe (107) is fixedly connected to the central cylinder (206) of the sedimentation tank via the pipeline mixer (210); the right side of the water supply pipe (106) is fixedly connected to the central cylinder (206) of the sedimentation tank; a sludge pipe (215) is provided on the cyclone mud and sand diversion device (213); the other end of the sludge pipe (215) leads to the sludge tank (7); the selection tank (3) comprises a bio-bed incubator baffle (305); the bio-bed incubator baffle (305) and the selection tank baffle (204) form a chamber; a lifting pump (301) is provided in the chamber;The lifting pump (301) is fixedly connected to the precision filter (304) via a precision filter water inlet pipe (302); a precision filter water outlet pipe (303) is provided at the output end of the precision filter (304); a selection pool water inlet pipe (504) is provided above the selection pool (3); the bio-bed incubator (4) comprises a water collection pool baffle (416); the water collection pool baffle (416) and the bio-bed incubator baffle (305) form a chamber; a filter plate (413) is provided on the upper side of the chamber, and a bio-bed incubator is provided on the lower side. A light filter material (403) is arranged between the layer filter plate (413) and the lower water distribution plate (405) of the bio-bed incubator, a plurality of upper water distribution filter heads (402) are arranged on the layer filter plate (413), a plurality of lower water distribution filter heads (407) are arranged on the lower water distribution plate (405) of the bio-bed incubator, a middle partition plate (409) is arranged between the layer filter plate (413) and the lower water distribution plate (405) of the bio-bed incubator to divide the space into left and right parts, and a microorganism releaser ( 404) and the aeration device (410) of the biobed incubator, a guide pipe (401) is arranged on the right side above the biobed incubator partition (305), the outlet of the lower end of the guide pipe (401) is located below the lower water distribution plate (405) of the biobed incubator, the water outlet pipe (303) of the precision filter is connected to the guide pipe (401), and the upper branch of the fan air supply pipe (113) is respectively provided with the air supply pipe (408) of the biobed incubator aeration device, the air supply pipe (411) of the microorganism releaser and the air supply pipe (412) of the biobed incubator. ), the bio-bed incubator aeration device air supply pipe (408) is connected to the bio-bed incubator aeration device (410) on the right, the bio-bed incubator air supply pipe (412) is connected to the bio-bed incubator aeration device (410) on the left, the microorganism releaser air supply pipe (411) is connected to the microorganism releaser (404), a backwash water outlet (406) is provided below the bio-bed incubator (4), and a high-position water outlet weir (414) and a low-position water outlet weir (415) are provided above and below the water collection tank partition (416). , 2. A dual-mode low-carbon operation river and lake ecological water purification device according to claim 1, characterized in that: The water collection tank (5) comprises a precision filter tank baffle (507), wherein the precision filter tank baffle (507) and the water collection tank baffle (416) form a cavity, a water collection tank lifting pump (501) is arranged at the bottom of the cavity, a water collection tank lifting pump water supply pipe (502) is arranged on the water collection tank lifting pump (501), two branches are arranged on the water collection tank lifting pump water supply pipe (502), and the selection tank inlet pipe (504) and the backwashing water pipe (503) are respectively fixedly connected, and the outlet of the backwashing water pipe (503) is located above the biological bed incubator (4), and a water collection tank outlet weir (505) is arranged on the upper side of the precision filter tank baffle (507), and a guide pipe (506) is arranged on the right side of the water collection tank outlet weir (505).

3. A dual-mode low-carbon operation river and lake ecological water purification device according to claim 1, characterized in that: The precision filter tank (6) comprises a sludge tank partition (603), wherein the sludge tank partition (603) and the precision filter tank partition (507) form a cavity, wherein a fiber filtering device (601) is arranged in the cavity, and an outlet weir (602) is arranged on the upper side of the sludge tank partition (603), and a clean water outlet pipe (604) is arranged on the right side of the outlet weir (602).

4. A dual-mode low-carbon operation river and lake ecological water purification device according to claim 1, characterized in that: The sludge pool (7) comprises a sludge dewatering partition plate (702), wherein the sludge dewatering partition plate (702) and the sludge pool partition plate (603) form a cavity, wherein a sludge suction pump (701) is arranged in the cavity, and a sludge suction pump sludge supply pipe (703) is arranged on the sludge suction pump (701).

5. A dual-mode low-carbon operation river and lake ecological water purification device according to claim 4, characterized in that: The sludge dewatering room (8) comprises a sludge dewatering machine (801), the sludge suction pump sludge supply pipe (703) is connected to the inlet of the sludge dewatering machine (801), the sludge dewatering machine (801) is provided with a sludge discharge hopper (802) and a sludge dewatering machine water discharge port (803), and the sludge dewatering room (8) is also provided with a flocculant dosing device (804), and the flocculant dosing device (804) is connected to the inlet of the sludge dewatering machine (801) together with the sludge suction pump sludge supply pipe (703) through a pipeline (805).

6. A dual-mode low-carbon operation river and lake ecological water purification method, using a dual-mode low-carbon operation river and lake ecological water purification device as described in any one of claims 1-5, characterized in that: The following modes are included: S1: Mode 1 is a conventional operation mode, specifically, polluted river and lake water is lifted by a lifting pump and enters the sand-water separator (102) through the water inlet pipe (101), and the separated water enters the sedimentation system (2) through the static mixer (105) and the water supply pipe (106) for sedimentation and separation treatment, and the effluent of the sedimentation system (2) enters the biological bed incubator (4) through the selection tank (3), and the effluent is directly discharged back to the river and lake, and the microbial releaser (404) in the bed of the biological bed incubator (4) rapidly reproduces and releases microbial biological cells, which are released into the water body to increase the microbial flora of the water body and improve the bottom mud ecological environment, or the effluent continues to enter the precision filter (6) through the water collection tank (5) to perform deep purification treatment on the water body, thereby purifying the water quality; S2: Mode 2 is a high-speed rapid filtration mode, specifically, polluted river and lake water is lifted by a lifting pump and enters the sand-water separator (102) through the water inlet pipe (101). The separated water enters the sedimentation system (2) through the static mixer (105) and the water supply pipe (106) for sedimentation and separation treatment. A part of the effluent of the sedimentation system (2) enters the bio-bed incubator (4) through the selection tank (3), and the effluent is directly discharged back to the river and lake. The other part of the effluent of the sedimentation system (2) directly enters the water collection tank (5) and the precision filter tank (6) for deep purification treatment. The water output at this time is more than 5-10 times that of mode 1, which meets the purpose of quickly removing sediment and suspended matter and quickly restoring the water quality of the water body and purifying the water quality in the case of floods and pollution accidents in the rainy season.

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