CN210215087U - Complete treatment system for black and odorous water body - Google Patents
Complete treatment system for black and odorous water body Download PDFInfo
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- CN210215087U CN210215087U CN201920777371.9U CN201920777371U CN210215087U CN 210215087 U CN210215087 U CN 210215087U CN 201920777371 U CN201920777371 U CN 201920777371U CN 210215087 U CN210215087 U CN 210215087U
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Abstract
The utility model discloses a complete treatment system for black and odorous water, which is formed by connecting a first lift pump, a fine grid, an integrated sludge-membrane coupling nitrogen and phosphorus removal device, a high-speed ion air flotation and precipitation coupling integrated machine, a first middle water tank, a second lift pump, an integrated biological aerated filter and an integrated clean water tank in series; the gas stripping mud-water backflow system of the integrated sludge-film coupled nitrogen and phosphorus removal equipment enables mud water precipitated in the sedimentation tank to flow back to the water inlet end of the first section of anoxic sludge-film coupled tank, and the mud water is mixed with water discharged by the fine grid and then enters the first section of anoxic sludge-film coupled tank; and the effluent of the backwashing system and the desliming filtrate of the sludge treatment system are collected in a centralized manner by a second intermediate water tank and then enter the high-speed ion air flotation precipitation coupling all-in-one machine for treatment. By adopting the utility model for treatment, the water quality index of the outlet water can reach the standard of surface IV water and above, and the problem that the system outlet water is difficult to reach the standard under the high-concentration inlet water quality or low-temperature environment can be solved.
Description
Technical Field
The utility model belongs to the technical field of water pollution treatment, concretely relates to complete set of black and odorous water body is handled.
Background
The phenomena of black and odorous rivers and substandard water quality in cities become pollution problems commonly existing in many cities in China, and the life, the image and the ecological environment of residents are seriously influenced. From the treatment process, the traditional river treatment system comprises a natural ecological land treatment system (especially an artificial wetland treatment system) and an oxidation pond, and an artificial reinforced biological contact oxidation method, a biological filter bed and the like. Due to the characteristics of great water temperature, flow and water quality variability along with seasons, the existing treatment method generally has the defects of poor treatment effect, high operation cost, low impact resistance, incapability of synchronously realizing nitrogen and phosphorus removal and the like, the ideal effect is difficult to achieve, part of river treatment technologies are single, and the water body cannot eliminate black and odorous water or reach surface V-type water.
At present, the water temperature for treating black and odorous water in winter is generally below 15 ℃, and the water quality concentration is generally higher than that in other seasons, so that the operation in winter is difficult to stably reach the standard; due to the influence of water quality with higher ammonia nitrogen and COD concentration and the influence of low-temperature environment in winter, when the actual inlet ammonia nitrogen concentration of the biological aerated filter is higher than 20-25 mg/L or the inlet COD of the biological aerated filter is too high, the time for the filter to recover to reach the standard after back washing can be prolonged, heterotrophic bacteria can become dominant flora, and the nitrification of ammonia nitrogen is inhibited. In addition, the ammonia nitrogen concentration of raw water in winter is higher than that of raw water in other seasons, and when the aerobic process is independently adopted for nitrification, the inorganic alkalinity concentration is possibly insufficient, so that the nitrification efficiency is influenced; the common dephosphorization effect of the traditional biological aerated filter is poor. Because the foundation of the dam around the river channel has poor compressive strength and small effective utilization area, and the removal residence time of ammonia nitrogen is long, the construction of a large-scale concrete sewage treatment plant, an activated sludge method or a contact oxidation method sewage treatment technology is not suitable for the in-situ water treatment of the river channel; in addition, the in-situ river channel treatment is short in periodicity, so that the concrete sewage treatment structure is generally not suitable for river channel water treatment for years; meanwhile, the size of the equipment is also influenced by the transportation limit range of the height limit and the width limit of the road. Therefore, the key problem that the water quality influenced by the high-concentration water quality (COD and ammonia nitrogen) and the low-temperature environment of the existing black and odorous water body is difficult to reach the standard is urgently needed to be overcome, and a novel complete treatment method for the black and odorous water body is developed so as to realize that pollutants such as COD, ammonia nitrogen, total phosphorus, dissolved oxygen and the like in the water body stably reach the surface IV water and the above standards.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned problem, provide a complete set of processing of black smelly water to the quality of water that breaks through high concentration quality of water (COD and ammonia nitrogen) and low temperature environment influence is difficult to a difficult problem up to standard, and solve the long problem of recovery time after the biological aerated filter is reversed, reach earth's surface IV class water and above standard with COD, ammonia nitrogen, total phosphorus, dissolved oxygen etc. pollutant are stable in realizing the water.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a complete set of treatment system for black and odorous water bodies is formed by connecting a first lifting pump, a fine grid, an integrated sludge-film coupling nitrogen and phosphorus removal device, a high-speed ion air floatation and precipitation coupling integrated machine, a first intermediate water tank, a second lifting pump, an integrated biological aerated filter and an integrated clean water tank in series, and further comprises a sludge treatment system and a filter backwashing system; the first lift pump is connected with the inlet of the fine grid through a sewage inlet pipe, and the outlet of the fine grid is connected with the inlet of the integrated sludge-membrane coupling nitrogen and phosphorus removal equipment; the water outlet of the integrated sludge-film coupled nitrogen and phosphorus removal equipment is connected with the water inlet of the high-speed ion air floatation and precipitation coupled all-in-one machine through a sewage inlet pipe; the water outlet of the high-speed ion air floatation and sedimentation coupling all-in-one machine enters the first intermediate water tank through the sewage inlet pipe; the inlet and outlet pipe orifices of the second lift pump are respectively connected with the first intermediate water tank and the integrated biological aerated filter, and the outlet pipe of the integrated biological aerated filter is connected into the integrated clean water tank and is discharged outside.
The integrated sludge-membrane coupling nitrogen and phosphorus removal equipment also comprises a first section of anoxic sludge-membrane coupling tank, a second section of aerobic sludge-membrane coupling tank, a third section of anoxic sludge-membrane coupling tank, a sedimentation tank, a suspended filler, suspended activated sludge and an air stripping sludge-water reflux system; the integrated sludge-membrane coupling nitrogen and phosphorus removal equipment has the treatment capacity of 200-1000 m3D; the filling ratio of the suspended filler is5-45%; the sludge concentration is 1000-4000 mg/L, the total retention time is 3-10 h, and the retention time of the first section of anoxic sludge film coupling tank, the second section of aerobic sludge film coupling tank and the third section of anoxic sludge film coupling tank is not less than 0.2h, 2.6h and 0.2h respectively; the gas stripping mud-water backflow system enables mud water precipitated by the precipitation tank to flow back to the water inlet end of the first section of anoxic mud film coupling tank, and the mud water and water are mixed together with water discharged by the fine grid and then enter the first section of anoxic mud film coupling tank.
The suspended filler of the second section of aerobic sludge-film coupling tank is in turbine reciprocating circulating fluidized motion; the second section of aerobic sludge film coupling tank is a multi-stage aerobic zone, and the number of stages is 2-5; the suspending filler can adopt APG filler or MBBR filler.
The high-speed ion air floatation and sedimentation coupling integrated machine comprises a mixing tank, a flocculation tank, a flotation and sedimentation coupling tank and a clean water tank; the flotation and precipitation coupling tank comprises an ion bubble generator, an inclined plate, a surface slag scraper, a sludge hopper, a slag collecting groove and a sludge reflux pump; the bottom of the sludge hopper is respectively connected with a reflux pump and a reflux pipeline through a residual sludge pipeline; the slag outlet of the surface slag scraper is connected with a collecting slag groove, and the outlet of the collecting slag groove is connected with a sludge dewatering system through a slag discharging pipeline.
The integrated biological aerated filter body also comprises a water distribution chamber, a water distribution system, a supporting layer, a biological filter material layer, a clear water zone, a water outlet channel, an aeration system, a water level lowering system and a backwashing system; the integrated biological aerated filter is of a container-shaped cuboid structure, and the treatment capacity of each unit is 1000-5000 m3/d。
The biological filter material layer is a pyrite-based biological filter material or a weak base ceramsite.
The backwashing system adopts a lower water level backwashing method, the backwashing raw water adopts sewage in a clear water tank as backwashing raw water, and backwashing effluent is discharged into a second intermediate water tank; and the effluent of the backwashing system and the desliming filtrate of the sludge treatment system are collected in a centralized manner by a second intermediate water tank and then enter the high-speed ion air flotation precipitation coupling all-in-one machine for treatment.
The black and odorous water bodyThe processing scale of the complete processing system is 1000-50000 m3/d。
The integrated sludge-membrane coupling nitrogen and phosphorus removal equipment, the high-speed ion air floatation and precipitation coupling integrated machine and the integrated biological aerated filter can be combined in a parallel connection mode, so that the treatment scale is improved.
The first section of anoxic sludge film coupling tank, the second section of aerobic sludge film coupling tank, the third section of anoxic sludge film coupling tank and the sedimentation tank can be respectively arranged in different integrated sludge film coupling nitrogen and phosphorus removal equipment according to a partition form and are connected in series for combined use.
Drawings
FIG. 1: a complete set of treatment system structure of black and odorous water and a process flow schematic diagram.
Wherein: 0-black and odorous water to be treated; 1, a first lifting pump; 2, fine grids; 3, an integrated sludge-film coupling nitrogen and phosphorus removal device, 3-1 a first section of an anoxic sludge-film coupling tank, 3-2 a second section of an aerobic sludge-film coupling tank (3-2-1 a first-stage aerobic sludge-film coupling zone, 3-2-1 a second-stage aerobic sludge-film coupling zone), 3-3 a third section of the aerobic sludge-film coupling tank, 3-4 a sedimentation tank, 3-5 an air-stripping sludge-water backflow system, 3-6 a suspended filler and 3-7 a suspended activated sludge; 4, a high-speed ion air flotation integrated machine, 4-1 mixing units, 4-2 flocculation units, 4-3 flotation and precipitation coupling tanks (4-3-1 ion bubble generators, 4-3-2 inclined plates, 4-3-3 surface slag scrapers, 4-3-4 mud hoppers, 4-3-5 collecting slag grooves), 4-4 clean water tanks and 4-5 sludge reflux pumps; 5, a first intermediate water tank; 6, a second lift pump; 7, an integrated biological aerated filter; 8, an integrated clean water tank; 9 a sludge treatment system; 10 a second intermediate water tank; 11, discharging water after reaching the standard; w (comprising w1, w2, w3, w4, w5, w6 and w7) sewage inlet and outlet pipes, F1 backwashing water inlet pipes, F2 backwashing water outlet pipes, F3 desliming system filtrate inlet pipes and F4 desliming system filtrate outlet pipes; h1 sludge return pipe, H2 sludge collecting tank sludge outlet pipe, and H3 residual sludge outlet pipe.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
a complete set of treatment system for a black and odorous water body is composed of a first lifting pump 1, a fine grid 2, an integrated sludge-film coupling nitrogen and phosphorus removal device 3, a high-speed ion air flotation and precipitation coupling integrated machine 4, a first middle water tank 5, a second lifting pump 6, an integrated biological aerated filter 7 and an integrated clean water tank series connection 8, and further comprises a sludge treatment system 9 and a filter backwashing system; the method is characterized in that: the first lifting pump 1 is connected with an inlet of the fine grid 2 through a sewage inlet pipe w1 pipeline, and an outlet of the fine grid 2 is connected with an inlet of the integrated sludge-membrane coupling nitrogen and phosphorus removal equipment 3 through a w2 pipeline; the water outlet of the integrated sludge-film coupled nitrogen and phosphorus removal device 3 is connected with the water inlet of the high-speed ion air flotation precipitation coupling all-in-one machine 4 through a w3 pipeline; the water outlet of the high-speed ion air floatation and sedimentation coupling all-in-one machine 4 enters the first intermediate water tank 5 through a w4 pipeline; the inlet pipe port w5 and the outlet pipe port w5 of the second lift pump 6 are respectively connected with the first intermediate water tank 5 and the integrated biological aerated filter 7, and the outlet pipe w6 of the integrated biological aerated filter 7 is connected with the integrated clean water tank 8 and is discharged outside through a w7 pipeline.
The integrated sludge-membrane coupling nitrogen and phosphorus removal equipment 3 also comprises a first section of anoxic sludge-membrane coupling tank 3-1, a second section of aerobic sludge-membrane coupling tank 3-2, a third section of anoxic sludge-membrane coupling tank 3-3, a sedimentation tank 3-4, a suspended filler 3-6, a suspended activated sludge 3-7 and an air stripping sludge-water reflux system 3-5; the integrated sludge-membrane coupling nitrogen and phosphorus removal equipment 3 has the treatment capacity of 200-1000 m3D; 3-6 filling ratio of the suspended filler is 5-45%; the sludge concentration is 3-7 and is 1000-4000 mg/L, the total retention time is 3-10 h, and the retention time of the first section of anoxic sludge film coupling tank 3-1, the second section of aerobic sludge film coupling tank 3-2 and the third section of anoxic sludge film coupling tank 3-3 is not less than 0.2h, 2.6h and 0.2h respectively; the gas stripping mud-water reflux system 3-5 is used for refluxing the mud water precipitated in the precipitation tank 3-4 to the water inlet end of the first section of anoxic mud film coupling tank 3-1, mixing the mud water with the effluent of the fine grid 1, and then feeding the mixture into the first section of anoxic mud film coupling tank 3-1; the gas stripping mud-water backflow system 3-5 enables mud water precipitated by the precipitation tank 3-4 to flow back to the water inlet end of the first section of the anoxic mud film coupling tank 3-1, and the mud water is mixed with water discharged by the fine grid 1 and then enters the first section of the anoxic mud film coupling tank 3-1.
The suspended filler 3-6 and the suspended activated sludge 3-7 of the second section aerobic sludge film coupling tank 3-2 are in turbine reciprocating circulating fluidized motion; the second section of aerobic sludge film coupling tank 3-3 is a multi-stage aerobic zone (a 3-2-1 first-stage aerobic sludge film coupling zone, a 3-2-1 second-stage aerobic sludge film coupling zone), and the stage number is 2-5; the suspended filler 3-6 can adopt APG filler or MBBR filler.
The high-speed ion air flotation and precipitation coupling integrated machine 4 comprises a mixing tank 4-1, a flocculation tank 4-2, a flotation and precipitation coupling tank 4-3 and a clean water tank 4-4; the flotation and precipitation coupling tank 4-3 comprises an ion bubble generator 4-3-1, an inclined plate 4-3-2, a surface slag scraper 4-3-3, a sludge hopper 4-3-4, a slag collecting tank 4-3-5 and a sludge reflux pump 4-5; the bottoms of the sludge hoppers 4-3-4 are respectively connected with the return pump 4-5 and the return pipeline H1 through a residual sludge pipeline H3; the slag outlet of the surface slag scraper 4-3-3 is connected with the slag collecting groove 4-3-5, and the outlet of the slag collecting groove 4-3-5 is connected with the sludge dewatering system 9 through a slag discharging pipeline H2.
The integrated biological aerated filter 7 body also comprises a water distribution chamber 7-1, a water distribution system 7-2, a supporting layer 7-3, a biological filter material layer 7-4, a clear water zone 7-5, a water outlet channel 7-6, an aeration system, a water level lowering system and a backwashing system; the integrated biological aerated filter 7 is of a container-shaped cuboid structure, and the single treatment capacity is 1000-5000 m3/d。
The biological filter material layer 7-4 is a pyrite-based biological filter material or a weak base ceramsite.
The backwashing system adopts a lower water level backwashing method, backwashing raw water adopts sewage in the integrated clean water tank 8 as backwashing raw water, and backwashing effluent is discharged into a second middle water tank 10 through an F2 pipeline; the effluent F2 of the backwashing system and the desliming filtrate H3 of the sludge treatment system are collected in a centralized manner by a second intermediate water tank 10 and then enter a high-speed ion air flotation and precipitation coupling all-in-one machine 4 for treatment.
The desliming filtrate produced by the sludge treatment system 9 flows into a second intermediate water tank 10 through an F3 pipeline, and sludge cakes formed by the sludge treatment system 9 are transported for disposal.
The processing scale of the complete set of black and odorous water body processing is 1000-50000 m3/d。
The integrated sludge-membrane coupling nitrogen and phosphorus removal equipment 3, the high-speed ion air floatation and precipitation coupling all-in-one machine 4 and the integrated biological aerated filter 7 can be combined in a parallel connection mode, so that the treatment scale is improved.
The first section of anoxic sludge film coupling tank 3-1, the second section of aerobic sludge film coupling tank 3-2, the third section of anoxic sludge film coupling tank 3-3 and the sedimentation tank 3-4 of the integrated sludge film coupling nitrogen and phosphorus removal equipment 3 can be respectively arranged in different integrated equipment according to a partition form and are connected in series and used in combination.
11. The treatment method of the complete treatment system for the black and odorous water body is characterized by comprising the following steps of:
(1) a first stage: lifting the black and odorous water body 0 to be treated to a fine grid 2 by using a first lifting pump 1 for pretreatment, intercepting and removing fibrous substances, granular impurities and the like in the water body;
(2) and a second stage: effluent treated by the fine grid 2 flows into an integrated turbine circulating reciprocating sewage treatment 3 device; lifting the precipitated sludge water in the precipitation area 3-3 to the water inlet end of a first section of anoxic sludge film coupling tank 3-1 by using a gas stripping sludge water reflux system 3-4, mixing the precipitated sludge water with the pretreated effluent water of the fine grid 2, and then feeding the mixture into the first section of anoxic sludge film coupling tank 3-1 of the integrated sludge film coupling nitrogen and phosphorus removal equipment 3, wherein the dissolved oxygen of the first section of anoxic sludge film coupling tank 3-1 is less than 1.0 mg/L; denitrifying microorganisms in the first section of anoxic sludge film coupling tank 3-1 utilize degradable organic carbon sources in raw water and nitrate nitrogen in gas stripping return flow sludge water to carry out denitrification, consume and degrade partial COD and BOD and generate alkalinity, wherein the gas stripping sludge water reflux ratio is 10% -100%; after sewage enters a multi-stage second-stage aerobic sludge film coupling tank 3-2, suspended fillers 3-6, suspended sludge 3-7 and aeration bubbles in the second-stage aerobic sludge film coupling tank 3-2 are in turbine reciprocating circulating fluidized motion, dissolved oxygen in the second-stage aerobic sludge film coupling tank 3-2 is 2.0-4.0 mg/L, aerobic decarbonizing bacteria, nitrifying bacteria, synchronous nitrification and denitrification bacteria and aerobic phosphorus-absorbing bacteria are distributed on the suspended fillers 3-6 in different graded aerobic areas in a dominant flora mode, the residual COD and BOD are further degraded by the suspended fillers 3-6 and aerobic heterotrophic bacteria on the suspended activated sludge 3-7, meanwhile, a biological film on the suspended fillers 3-6 and the suspended activated sludge degrade a large amount of ammonia nitrogen by nitrification, part of total nitrogen is removed by the synchronous nitrification and denitrification, and the aerobic phosphorus-absorbing bacteria absorb phosphorus, the effluent enters a third section of anoxic sludge film coupling tank 3-3; denitrifying microorganisms in the third section of anoxic sludge membrane coupling tank 3-3 utilize degradable organic carbon sources in the sludge and nitrate nitrogen in gas stripping backflow sludge water to carry out denitrification, part of COD and BOD is consumed and degraded, alkalinity is generated, meanwhile denitrifying phosphorus accumulating bacteria utilize nitrate as an electron donor to carry out denitrifying phosphorus accumulating action, effluent is subjected to sludge-water separation through a sedimentation tank 3-4, precipitated sludge water flows back to the first section of anoxic sludge membrane coupling tank 3-1 through a gas stripping sludge-water backflow system 3-5, and part of phosphorus-containing residual sludge is discharged to a sludge treatment system 9 through an H4 pipe to be treated. By controlling the reaction residence time, the dissolved oxygen parameters and the like, the key water outlet effect of the equipment is ensured: removing 60-90% of total influent COD and making effluent COD less than 60mg/L to complete the ammoniation process of organic nitrogen; removing 40-80% of ammonia nitrogen in the total inlet water in the water body and ensuring that the ammonia nitrogen in the outlet water is less than 20 mg/L;
(3) and a third stage: the effluent of the integrated sludge-film coupled nitrogen and phosphorus removal equipment 3 and the sewage in the second intermediate water tank enter a high-speed ion air flotation and precipitation coupling all-in-one machine 4, the sewage is mixed with a coagulating agent through a mixing tank 4-1, the mixture flows into a flocculation tank 4-2 after being stirred at a high speed for 3-4 min and then is stirred at a low speed for 2-5 min, reaction flocs are polymerized into large alum flocs, and the alum flocs in the sewage pass through the upper part of an ion bubble generator 4-3-1, are floated out of the water surface by bubbles with the diameter of 2-9 mu m and are collected by a surface slag scraper 4-3-3 to a slag collecting tank 4-3-5 and are discharged to a desliming; substances which have higher specific gravity and are not floated on the water surface are precipitated by an inclined plate 4-4-2 at the bottom of the equipment to be subjected to mud-water separation, the collected sludge is delivered to a sludge hopper 4-3-4, part of the collected sludge is discharged as residual sludge through an H3 pipeline to a desliming system 9 for treatment, and part of the collected sludge is returned to a 4-1 mixing tank or a 4-2 flocculation tank through a sludge return pump 4-5 and a sludge return pipe H1; and the effluent after separation and clarification is discharged to a clean water tank 4-3-5 and then discharged to a next-stage treatment unit 5. So as to remove most of Total Phosphorus (TP), suspended matters (SS), colloid and organic pollutants in the water body and improve the transparency of the water body; guarantee the key effect of going out water of this equipment: removing 30-80% of total influent COD and making effluent COD less than 50mg/L, and removing 90-95% of total influent phosphorus in the water body and making effluent TP less than 0.5mg/L and SS less than 10 mg/L.
(4) Fourth stage: effluent treated by the high-speed ion air flotation and precipitation coupling all-in-one machine 4 flows into a first intermediate water tank 5 and is lifted to an integrated aeration biological filter 7 by a second lifting pump 6 to be subjected to biological aerobic carbon removal, nitrification and chemical phosphorus removal treatment, the hydraulic retention time is 40-80 min, and the dissolved oxygen is 4.0-6.0 mg/L; under the aerobic condition, the heterotrophic bacteria in the biomembrane remove the residual COD in the water body; nitrifying bacteria in the biomembrane attached to the surface of the pyrite-based biological filter material or the weak base ceramsite 7-4 are nitrified to remove ammonia nitrogen; the pyrite-based biological filter material or the weak base ceramsite 7-4 is subjected to chemical reaction of inorganic phosphorus in a microenvironment and is solidified on the surface of the filler to form iron phosphate or hydroxyl calcium sulfonate solid, so that the aim of synchronously removing phosphorus is fulfilled; after the treatment of the integrated biological aerated filter 7, the dissolved oxygen in the water body is greatly promoted; discharging the water after reaching the standard to an integrated clean water tank 8, discharging part of the discharged water in the integrated clean water tank 8 as standard water 11, and discharging part of the discharged water as backwashing raw water, and feeding the water through an F1 pipe; when high concentration intaking (COD and ammonia nitrogen) and low temperature with guaranteeing this equipment, the key effect of going out water: COD is less than 30mg/L, ammonia nitrogen is less than 1.0mg/L, TP is less than 0.3mg/L, DO is more than 4mg/L, SS is less than 10mg/L, and the effluent can reach the standard of surface water environmental quality standard (GB3838-2002) and the standard of surface IV water.
(5) After the integrated biological aerated filter 7 runs for 24-72 hours, backwashing by adopting a water level reduction backwashing method, wherein the water level reduction backwashing method comprises the following steps: the time for lowering the water level, the time for air washing, the time for air-water combined backwashing and the time for water rinsing are respectively 0.3-1.5 min, 0.8-2.5 min and 3.0-9.0 min; the air washing strength and the water rinsing strength are 12-25L/m 2 & s and 4-6L/m 2 & s in sequence.
(6) The effluent of the lower water level backwashing system enters a second intermediate water tank 10 through an F5 pipe and desliming filtrate of the sludge treatment system through an F3 pipe, and the collected water enters an integrated sludge-film coupling nitrogen and phosphorus removal device 3 for treatment; the water content of the mud cakes treated by the sludge treatment system 9 is less than 80 percent, and the mud cakes are transported outside.
The black and odorous water body 0 comprises sewage in the Duantou creek, sewage in a pump station, sewage in an overflow forebay of a flood discharge ditch, a black and odorous water body, initial polluted rainwater, and a water body polluted by a river channel, a lake, a pond and a landscape.
The whole system well combines the processes of first-stage physical pretreatment, second-stage biological treatment, third-stage magnetic coagulation treatment and physicochemical and biochemical treatment of a fourth-stage aeration biological filter, ensures that the system is not influenced by the fluctuation of high-concentration (COD and ammonia nitrogen) inlet water, ensures the alkalinity sufficiency of the system (no extra alkali is added), utilizes denitrifying phosphorus-accumulating bacteria to remove phosphorus, reduces the dosage of chemical dosing phosphorus removal agents, can ensure the system outlet water temperature in a low-temperature environment to reach the standard, improves and ensures the backwashing recovery effect and short time recovery period of the aeration biological filter under the conditions of high-concentration inlet water quality and the low-temperature environment, ensures that the system outlet water can reach the surface water environment quality standard (GB3838-2002) ground surface quasi IV water standard (COD is less than 30mg/L and ammonia nitrogen is less than 1.0mg/L, TP is less than 0.3mg/L, DO is more than 4mg/L, SS is less than 10 mg/L); the shock resistance and load capacity are strong, and the system stability is strong; the denitrification effect is excellent; the equipment investment is saved, the operating cost is low, and the like, and the water body can be obviously improved and restored to realize ecological water supplement. The method meets the requirements of energy conservation and environmental protection, and well realizes the best unification of social benefit, economic benefit and environmental benefit.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (10)
1. A complete set of treatment system for black and odorous water bodies is formed by connecting a first lifting pump, a fine grid, an integrated sludge-film coupling nitrogen and phosphorus removal device, a high-speed ion air floatation and precipitation coupling integrated machine, a first intermediate water tank, a second lifting pump, an integrated biological aerated filter and an integrated clean water tank in series, and further comprises a sludge treatment system and a filter backwashing system; the method is characterized in that: the first lift pump is connected with the inlet of the fine grid through a sewage inlet pipe, and the outlet of the fine grid is connected with the inlet of the integrated sludge-membrane coupling nitrogen and phosphorus removal equipment; the water outlet of the integrated sludge-film coupled nitrogen and phosphorus removal equipment is connected with the water inlet of the high-speed ion air floatation and precipitation coupled all-in-one machine through a sewage inlet pipe; the water outlet of the high-speed ion air floatation and sedimentation coupling all-in-one machine enters the first intermediate water tank through the sewage inlet pipe; the inlet and outlet pipe orifices of the second lift pump are respectively connected with the first intermediate water tank and the integrated biological aerated filter, and the outlet pipe of the integrated biological aerated filter is connected into the integrated clean water tank and is discharged outside.
2. The integrated black and odorous water body treatment system according to claim 1, wherein: the integrated sludge-membrane coupling nitrogen and phosphorus removal equipment also comprises a first section of anoxic sludge-membrane coupling tank, a second section of aerobic sludge-membrane coupling tank, a third section of anoxic sludge-membrane coupling tank, a sedimentation tank, a suspended filler, suspended activated sludge and an air stripping sludge-water reflux system; the integrated sludge-membrane coupling nitrogen and phosphorus removal equipment has the treatment capacity of 200-1000 m3D; the filling ratio of the suspended filler is 5-45%; the sludge concentration is 1000-4000 mg/L, the total retention time is 3-10 h, and the retention time of the first section of anoxic sludge film coupling tank, the second section of aerobic sludge film coupling tank and the third section of anoxic sludge film coupling tank is not less than 0.2h, 2.6h and 0.2h respectively; the gas stripping mud-water backflow system enables mud water precipitated by the precipitation tank to flow back to the water inlet end of the first section of anoxic mud film coupling tank, and the mud water and water are mixed together with water discharged by the fine grid and then enter the first section of anoxic mud film coupling tank.
3. The integrated black and odorous water body treatment system according to claim 2, wherein: the suspended filler of the second section of aerobic sludge-film coupling tank is in turbine reciprocating circulating fluidized motion; the second section of aerobic sludge film coupling tank is a multi-stage aerobic zone, and the number of stages is 2-5; the suspending filler can adopt APG filler or MBBR filler.
4. The integrated black and odorous water body treatment system according to claim 1, wherein: the high-speed ion air floatation and sedimentation coupling integrated machine comprises a mixing tank, a flocculation tank, a flotation and sedimentation coupling tank and a clean water tank; the flotation and precipitation coupling tank comprises an ion bubble generator, an inclined plate, a surface slag scraper, a sludge hopper, a slag collecting groove and a sludge reflux pump; the bottom of the sludge hopper is respectively connected with a reflux pump and a reflux pipeline through a residual sludge pipeline; the slag outlet of the surface slag scraper is connected with a collecting slag groove, and the outlet of the collecting slag groove is connected with a sludge dewatering system through a slag discharging pipeline.
5. The integrated black and odorous water body treatment system according to claim 1, wherein: the integrated biological aerated filter body also comprises a water distribution chamber, a water distribution system, a supporting layer, a biological filter material layer, a clear water zone, a water outlet channel, an aeration system, a water level lowering system and a backwashing system; the integrated biological aerated filter is of a container-shaped cuboid structure, and the treatment capacity of each unit is 1000-5000 m3/d。
6. The integrated black and odorous water body treatment system according to claim 5, wherein: the biological filter material layer is a pyrite-based biological filter material or a weak base ceramsite.
7. The integrated black and odorous water body treatment system according to claim 5, wherein: the backwashing system adopts a lower water level backwashing method, the backwashing raw water adopts sewage in a clear water tank as backwashing raw water, and backwashing effluent is discharged into a second intermediate water tank; and the effluent of the backwashing system and the desliming filtrate of the sludge treatment system are collected in a centralized manner by a second intermediate water tank and then enter the high-speed ion air flotation precipitation coupling all-in-one machine for treatment.
8. The integrated black and odorous water body treatment system according to claim 1, wherein: the processing scale of the complete set of black and odorous water body processing system is 1000-50000 m3/d。
9. The integrated black and odorous water body treatment system according to claim 1, wherein: the integrated sludge-membrane coupling nitrogen and phosphorus removal equipment, the high-speed ion air floatation and precipitation coupling integrated machine and the integrated biological aerated filter can be combined in a parallel connection mode, so that the treatment scale is improved.
10. The integrated black and odorous water body treatment system according to claim 2, wherein: the first section of anoxic sludge film coupling tank, the second section of aerobic sludge film coupling tank, the third section of anoxic sludge film coupling tank and the sedimentation tank can be respectively arranged in different integrated sludge film coupling nitrogen and phosphorus removal equipment according to a partition form and are connected in series for combined use.
Priority Applications (1)
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