CN212334940U - Integrated sewage treatment device for deep denitrification and dephosphorization - Google Patents
Integrated sewage treatment device for deep denitrification and dephosphorization Download PDFInfo
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- CN212334940U CN212334940U CN202020900026.2U CN202020900026U CN212334940U CN 212334940 U CN212334940 U CN 212334940U CN 202020900026 U CN202020900026 U CN 202020900026U CN 212334940 U CN212334940 U CN 212334940U
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Abstract
The utility model provides an integration sewage treatment plant of degree of depth nitrogen and phosphorus removal, it is including the equalizing basin and the lift-well that have the elevator pump and the biochemical system of integration equipment of one side, this biochemical system of integration equipment from left to right is denitration pond in advance, anaerobism pond, oxygen deficiency pond, good oxygen sedimentation tank, coagulating basin and biofiltration pond in proper order, separates through the baffle between every pond to set up the graticule mesh that lets the rivers circulate on the baffle, adjusting basin one side is through the lift-well with rivers income only adjusting basin, and set up the fine grid of hand-basket in order to hold back tiny suspended solid and particulate matter in the water inlet department of lift-well, and the opposite side of equalizing basin is passed through the elevator pump with water through the pipeline of taking the mouth of water inlet and is directly inserted in denitration pond in advance, anaerobism pond and oxygen deficiency pond respectively, and it has equipment structure simply, small, but remote supervision.
Description
Technical Field
The utility model relates to a water treatment technical field especially relates to an integration sewage treatment plant of degree of depth nitrogen and phosphorus removal.
Background
At present, the rural sewage treatment rate in China is very low, but with the proposal of socialist ecological civilization construction and the continuous pursuit of residents on the quality of life, the rural sewage treatment has wide promotion space. Due to the difference of economic and social development levels, the treatment process of rural sewage can not take care of urban sewage, otherwise, the treatment process is easily out of line with water and soil in practical application. Therefore, aiming at the characteristics of small amount of sewage in rural areas in China, large daily change, obvious regional difference and the like, research and development of decentralized rural sewage treatment process equipment which is suitable for the national conditions of China and has the advantages of low cost, simple management and stable effect are required.
The integrated sewage treatment equipment is simply a sewage treatment device integrating each treatment unit, each functional structure and accessory equipment in a sewage treatment process. The integrated equipment has the advantages of high treatment efficiency, low energy consumption, small sludge production, convenient management, small occupied area and the like, and is increasingly widely applied to the field of sewage treatment. Compared with a large-scale traditional sewage treatment system, the system has wider development prospect and irreplaceable advantages in rural areas. The method has the advantages of reducing capital investment, relieving municipal pipeline construction pressure, effectively saving building space, reducing land utilization cost, highly integrating water treatment process and further promoting innovation of water treatment industry. Small-sized integrated treatment equipment has started to be applied in the field of decentralized treatment of sewage, and treatment equipment mainly based on different processes has been developed. In recent years, research on integrated distributed sewage treatment equipment is increasing, papers and patents on the research are increasing year by year, and the growth speed is extremely obvious. The integrated equipment designed in the distributed treatment process has large floor area, low integration level, complex operation management and poor treatment effect due to the characteristics of the processes such as ecological treatment, septic tank treatment, anaerobic treatment and the like, and is not suitable for rural sewage integrated processes. The current popular integrated equipment mainly comprises three processes, namely an AO process, an SBR process and an MBR process. Aiming at actual requirements of rural distributed integrated equipment, the research develops small-sized integrated equipment which is flexible and variable in process, independent in nitrogen and phosphorus removal unit, low in energy consumption, high in integration level and provided with a modular advanced treatment unit, and meets rural sewage integration requirements.
Disclosure of Invention
The utility model discloses based on IFAS technology and the advantage of Bardenpho technology, the development is applicable to the integrated sewage treatment plant who has a degree of depth nitrogen and phosphorus removal of high-efficient synchronous nitrogen and phosphorus removal function, low, the independent, the modularization integrated form of nitrogen and phosphorus removal unit of working costs among the distributed sewage treatment. The utility model discloses the sewage treatment plant who creates, the advantage is complementary, and the intention is novel, design benefit. The purpose of the utility model is accomplished through following technical scheme: an integrated sewage treatment device for deep denitrification and dephosphorization, which comprises an adjusting tank with a lift pump, a lift well and an integrated equipment biochemical system at one side, wherein the integrated equipment biochemical system sequentially comprises a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic sedimentation tank, a coagulation tank and a biological filtration tank from left to right, each tank is separated by a partition plate, and a grid for water circulation is arranged on the partition plate, and is characterized in that one side of the adjusting tank flows water into the adjusting tank through the lift well, a basket fine grid is arranged at a water inlet of the lift well to intercept fine suspended matters and particulate matters, the other side of the adjusting tank directly inserts the water into the pre-denitrification tank, the anaerobic tank and the anoxic tank through a pipeline with a water inlet, wherein the water inlet in the pre-denitrification tank is positioned 0.1cm above the liquid level, the water inlet in the anaerobic tank is positioned 1.4m below the liquid level, the water inlet in the anoxic tank is positioned 0.1cm above the liquid level, ball valves are arranged at the outlet of the water inlet to facilitate water inflow adjustment, the grids of the pre-denitrification tank and the anaerobic tank are positioned at the bottom of the partition, the grids of the anaerobic tank and the anoxic tank are positioned at the liquid level at the top of the partition, the grids of the aerobic tank and the anoxic tank are positioned at the bottom of the partition, the grids of the aerobic tank and the aerobic aeration tank are positioned at the liquid level at the top of the partition, aerators are also arranged at the bottoms of the pre-denitrification tank, the anoxic tank and the aerobic tank, perforated pipe aerators are arranged at the bottoms of the pre-denitrification tank and the anoxic tank, microporous aerators are arranged at the bottoms of the anaerobic tank and the aerobic tank, a single-row microporous aerator is arranged at the bottom of the aerobic sedimentation tank, the coagulation tank is composed of a stirring coagulation tank, a sedimentation tank and at least one group of sludge hoppers at the bottom, the sludge hoppers are arranged at two sides of the bottom of the coagulation tank, and, and the effluent after precipitation separation in the precipitation tank enters a biological filter tank from a top overflow hole, the biological filter tank is divided into a water distribution area and a filter area, the coagulated effluent enters the bottom of the biological filter tank from the water distribution area, upflow filtration is adopted, and after being filtered by a filler, the effluent reaching the standard is automatically discharged from a top water outlet.
Preferably, the method comprises the following steps: fixed bed fillers are additionally arranged in the pre-denitrification tank, the anoxic tank and the aerobic tank and are formed by serially connecting and fixing suspension ball fillers at intervals of 10-20 cm, wherein polyurethane sponge fillers are filled in the suspension ball fillers, and the filling rate is more than or equal to 60%.
Preferably, the method comprises the following steps: an air inlet pipe of an aerator at the bottom of the anaerobic tank is provided with an electromagnetic valve for controlling air inlet frequency, the anaerobic tank can be switched between an anaerobic function and an aerobic function, and the electromagnetic valve controls the modes of opening for 10-30 s and closing for 1-3 min to realize an anaerobic effect.
Preferably, the method comprises the following steps: two sets of built-in sedimentation tanks are installed near the tank wall in the two sides of a single-row microporous aerator arranged at the bottom of the aerobic sedimentation tank, the built-in sedimentation tank adopts a bottom inflow mode and a bottom gravity backflow mode simultaneously, the inclination angle of a mud bucket at the bottom of the sedimentation tank is 55 degrees, two sets of triangular weirs for enabling sedimentation water to pass through the top to enter a coagulation tank, the triangular weirs at the top are positioned on one sides of a partition plate of the aerobic sedimentation tank and the coagulation tank, and a baffle is arranged on one side, far away from the partition plate, of the front end of each triangular weir to.
Preferably, the method comprises the following steps: the biological filter tank consists of a water distribution area and a biological filter area on one side, coagulating sedimentation effluent enters the bottom of the biological filter area after being uniformly distributed by the water distribution area, a water passing baffle is welded in a water passing channel at the bottom of the water distribution area to ensure uniform water distribution, and the inclination angle of the water passing baffle is 135 degrees. The water outlet after upflow filtration is collected by a top water-collecting triangular weir, a bottom stainless steel clapboard, a filler supporting layer, a filler/filter material and a top stainless steel clapboard are respectively arranged in a biological filtration area from bottom to top, a rectangular aerator consisting of perforated aeration pipes is arranged between the bottom stainless steel clapboard and the filler supporting layer, air is supplied by an electromagnetic diaphragm air pump, the aerator is connected to an aeration pipe on the wall of the filter, air backwashing is periodically carried out on the filler/filter material in the filter, a backwashing water discharge pipe and a backwashing water discharge air inlet pipe are arranged at the bottom of the biological filtration tank, air backwashing is periodically carried out, backwashing liquid is discharged into an adjusting tank through a backwashing water discharge pipe after the air backwashing, the filter tank is emptied and then enters the next water inlet process, the filler/filter material in the biological filtration tank is filled into a filter material container processed by a stainless steel perforated plate, and semicircular hoisting ears for facilitating hoisting are arranged on two sides of the top of the filter material container, can realize the artifical convenient change to the filter material, filler/filter material be the modularization mode, and removable quartz sand/active carbon that becomes sand filter/active carbon filter, volcanic filter material become the biological aerated filter or the denitrification filter, sulphur composite filter material becomes autotrophic denitrification filter, satisfies different sewage treatment discharge standard, nimble combination.
Preferably, the method comprises the following steps: and 3 groups of sludge air-lift pipes are arranged in the aerobic sedimentation tank, namely an air-lift sludge discharge pipe positioned at the tank end and an air-lift sludge return pipe at the tank tail end respectively, the air-lift sludge discharge pipe discharges the residual sludge in the biochemical tank out of the system, and the air-lift sludge return pipe returns the nitrifying liquid to the pre-denitrification tank and the anoxic tank respectively. The air inlet pipe of the air stripping sludge discharge pipe is provided with an electromagnetic valve, air inlet is periodically and automatically opened to discharge sludge through air stripping, the air inlet pipe of the air stripping sludge return pipe is provided with an adjusting ball valve, and the sludge discharge amount and the sludge return amount are indirectly controlled by adjusting the air inlet amount.
Preferably, the method comprises the following steps: 2 groups of gas stripping sludge discharge pipes are arranged in the coagulation tank, and correspond to 2 precipitated sludge hoppers respectively, and the coagulated excess sludge is discharged out of the system through the gas stripping sludge discharge pipes.
Drawings
Fig. 1 is a process flow diagram of the apparatus of the present invention.
Fig. 2 is a side view of the structure of the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is an installation diagram of the aerator of the utility model.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings: as shown in figure 1, the integrated sewage treatment device for deep nitrogen and phosphorus removal comprises a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic sedimentation tank, a coagulation tank and a biological filtration tank, wherein a water inlet lifting pump is installed in a water collecting well to lift sewage into integrated equipment, and power equipment comprises 1 rotary air blower and 1 electromagnetic air pump and is simultaneously provided with a carbon source, a phosphorus removal dosing pump and a dosing barrel.
As shown in figures 2-4, an integrated sewage treatment device for deep denitrification and dephosphorization comprises an adjusting tank and a lifting well with a lifting pump, and then a pre-denitrification tank 14, an anaerobic tank 15, an anoxic tank 16, an aerobic tank 17, an aerobic sedimentation tank 18, a coagulation tank 19 and a biological filter tank 20 are sequentially connected, wherein a basket fine grid 29 is arranged at a water inlet 1 of the lifting well of the adjusting tank 28 to intercept fine suspended matters and particulate matters, the fine suspended matters and the particulate matters are lifted by the lifting pump in the adjusting tank 28 and enter an integrated equipment biochemical system through a water inlet pipe 1, a perforated pipe aerator for timed stirring is also arranged at the bottom of the tank, a perforated pipe aerator 21 is arranged at the bottom of the pre-denitrification tank, a microporous aerator 22 is arranged at the bottom of the anaerobic tank, a connecting hole of the pre-denitrification tank and the anaerobic tank is a grid 2 positioned at the bottom of a partition plate of two tanks, a perforated pipe aerator 23 is arranged at the bottom of the anoxic tank is a grid 2 positioned at the liquid level at the, the aerobic tank is provided with a microporous aerator 24 at the bottom, a connecting hole between the aerobic tank 17 and the anoxic tank 16 is a grid 2 at the bottom of a partition board between the two tanks, the bottom of the aerobic tank 17 is provided with a single-row microporous aerator 25 and comprises a built-in sedimentation tank, the connecting hole between the aerobic tank 17 and the aerobic sedimentation tank 18 is the grid 2 at the liquid level at the top of the partition board between the two tanks, the coagulation tank 19 is composed of a stirring coagulation tank 5, a sedimentation tank and a bottom mud bucket 6, a perforated pipe aerator 26 is arranged at the middle part of the coagulation tank for stirring and coagulation, the effluent after precipitation separation in the sedimentation tank enters a biological filtration tank from a top overflow hole, the biological filtration tank is divided into a water distribution area and a filtration area, the coagulated effluent enters the bottom of the biological filtration tank from the water distribution area, is filtered by an up-flow type, and the effluent up to standard is discharged from.
Preferably, after the water pumped out of the lifting pump enters the integrated equipment, the water is divided into three points and enters the pre-denitration pool, the anaerobic pool and the anoxic pool respectively, the water inlet of the pre-denitration pool is located 0.1cm above the liquid level, the water inlet of the anaerobic pool is located 1.4m below the liquid level, the water inlet of the anoxic pool is located 0.1cm above the liquid level, and ball valves are arranged at the outlets of the water inlets so as to adjust the water inflow.
Preferably, fixed bed fillers are additionally arranged in the pre-denitrification tank 14, the anoxic tank 16 and the aerobic tank 17 and are formed by serially connecting and fixing suspension ball fillers, the interval between the fillers is 10-20 cm, polyurethane sponge fillers are filled in the suspension ball fillers, and the filling rate is more than or equal to 60%. And the anaerobic tank and the aerobic sedimentation tank are not filled with filler.
Preferably, the air inlet pipe of the aerator at the bottom of the anaerobic tank 15 is provided with a solenoid valve for controlling air inlet frequency, the anaerobic tank 15 can be switched between an anaerobic function and an aerobic function, the solenoid valve controls the mode of opening for 10-30 s and closing for 1-3 min to realize the anaerobic function, and the whole process is changed into A-A2O process; the aerobic function can be realized when the electromagnetic valve is normally opened, and the whole process is changed into a Bardenpho process.
Preferably, the bottom of the aerobic sedimentation tank 18 is provided with a single-row microporous aerator 25, two groups of built-in sedimentation tanks 13 are arranged at the positions, close to the tank wall, of two sides, the built-in sedimentation tanks 13 adopt a bottom inflow and bottom gravity backflow mode, the inclination angle of a mud bucket at the bottom of each sedimentation tank is 55 degrees, sedimentation effluent enters the coagulation tank from two groups of triangular weirs at the top through water, and the triangular weirs 4 at the top are positioned on one sides of partition plates of the aerobic sedimentation tank 17 and the coagulation tank 19. A baffle 3 is arranged at one side of the front end of the triangular weir 4, which is far away from the partition plate, so that scum is prevented from entering the coagulation tank.
Preferably, the coagulation tank is formed by combining a built-in coagulation stirring tank 5 and a built-in sedimentation tank, two groups of mud hoppers 6 are arranged at the bottom of the coagulation tank side by side, and the inclination angles of the mud hoppers are 55 degrees. The aerobic sedimentation tank produces water and mixes with the dephosphorization agent after entering the coagulating and stirring tank through top triangle weir, and the agitator tank mid-mounting 26 aeration perforated pipes, after coagulating through the aeration stirring, muddy water mixture gets into the sedimentation tank by the bottom, through sedimentation separation after, goes out water and crosses water triangle weir plate and get into the biological filtration district by the top, crosses water triangle weir and is located coagulating basin and biological filtration pond baffle one side.
Preferably, the biological filter tank consists of a water distribution area and a biological filter area on one side, coagulating sedimentation effluent enters the bottom of the biological filter area after being uniformly distributed in the water distribution area, a water passing baffle 10 is welded in a water passing channel at the bottom of the biological filter area to ensure uniform distribution, and the inclination angle of the water passing baffle is 135 degrees. The effluent is collected by a top water collecting triangular weir after upflow filtration, the water collecting triangular weir is positioned on one side far away from the partition plate, and the effluent reaches the standard and is discharged out of the integrated equipment by self-flowing after entering a clear water area.
Preferably, the filtering area is respectively provided with a bottom stainless steel clapboard, a filler supporting layer, a filler/filter material 9 and a top stainless steel clapboard from bottom to top, a rectangular aerator consisting of perforated aeration pipes 27 is arranged between the bottom stainless steel clapboard and the filler supporting layer, air is supplied by an electromagnetic diaphragm air pump, the aeration pipes on the wall of the filter tank are connected into the aerator, and the filler/filter material in the filter tank is periodically back-washed by air. And a backwashing water discharge pipe and a backwashing water discharge air inlet pipe are arranged at the bottom of the biological filter tank, air backwashing is periodically carried out, backwashing liquid is discharged into the regulating tank through the backwashing water discharge pipe after the air backwashing is carried out, and the filter tank enters the next water inlet process after being emptied.
Preferably, the method comprises the following steps: the filler/filter material in the biological filter tank is filled into a filter material container processed by a stainless steel perforated plate, and semicircular hoisting lugs for facilitating hoisting are arranged on two sides of the top of the filter material container, so that the filter material can be conveniently and manually replaced. The 9 fillers/filter materials are in a modularized mode, can be replaced by quartz sand/activated carbon to form a sand filter/activated carbon filter, can be replaced by volcanic filter materials to form a biological aerated filter or a denitrification filter, and can be replaced by sulfur composite filter materials to form an autotrophic denitrification filter, so that different sewage treatment discharge standards are met, and the filter materials are flexibly combined.
Preferably, the aerobic sedimentation tank is provided with a sludge gas stripping pipe 3 which is a gas stripping sludge discharge pipe positioned at the tank end and a gas stripping sludge return pipe positioned at the tank tail, the gas stripping sludge discharge pipe discharges the residual sludge in the biochemical tank out of the system through a sludge discharge main pipe 7, and the gas stripping sludge return pipe returns the nitrifying liquid to the pre-denitrification tank and the anoxic tank respectively. The air inlet pipe of the air stripping sludge discharge pipe is provided with an electromagnetic valve, air inlet is periodically and automatically opened to discharge sludge through air stripping, the air inlet pipe of the air stripping sludge return pipe is provided with an adjusting ball valve, and the sludge discharge amount and the sludge return amount are indirectly controlled by adjusting the air inlet amount.
Preferably, 2 groups of gas stripping sludge discharging pipes are arranged in the coagulation tank, the gas stripping sludge discharging pipes correspond to 2 precipitated sludge hoppers respectively, and the coagulated excess sludge is discharged out of the system through the gas stripping sludge discharging pipes.
The utility model relates to an integration sewage treatment plant of degree of depth nitrogen and phosphorus removal, a serial communication port, including following step:
a. the sewage is intercepted by the fine grid, precipitated and separated from slag, and is lifted into a biochemical system by a lifting pump after being homogenized and equalized by the adjusting tank. In order to meet the requirements of denitrification and dephosphorization efficiency and process, three water inlet points of a pre-denitrification pool, an anaerobic pool and an anoxic pool are arranged.
b. Sewage is fed from the top, after the sewage is subjected to up-and-down baffling reaction through grids on the partition plates of the process tanks, the sewage enters the coagulation tank after being separated by the built-in sedimentation tank of the aerobic sedimentation tank, is stirred and precipitated and then enters the biological filtration zone through the water distribution zone of the biological filtration tank, and the filtered effluent is discharged from the top water collection triangular weir and is discharged after reaching the standard.
c. The nitrifying liquid flows back to the pre-denitrification tank and the anoxic tank through a gas stripping return pipe arranged in the aerobic sedimentation tank; the biochemical sludge discharge is discharged into a sludge digestion tank through a manual/automatic discharge system of the gas stripping sludge discharge pipe arranged at the end of the aerobic sedimentation tank, and the materialized sludge discharge is discharged into a sludge storage tank for regular outward transportation after the organic sludge is reduced through the manual/automatic discharge system of the gas stripping sludge discharge pipe arranged at a sludge hopper of the coagulation tank.
d. After the coagulation stirring in the coagulation tank is carried out through aeration stirring and coagulation by the aeration perforated pipe, the mixed solution enters a biological filter tank after being subjected to water passing and precipitation separation from the bottom; the filtering area in the biological filtering tank needs to be periodically subjected to gas backwashing, and backwashing wastewater flows back to the regulating tank.
Preferably, the method comprises the following steps: the maximum surface load of the aerobic sedimentation tank in the step b is designed to be 1.0m3/m2H, the width of a gap at the bottom of the sedimentation tank is 0.3-0.4 m, and the surface load of the coagulation sedimentation tank is 2.31m3/m2H, surface load of biological filtration tank 2.08m3/m2·h。
Claims (7)
1. An integrated sewage treatment device for deep denitrification and dephosphorization, which comprises an adjusting tank with a lift pump, a lift well and an integrated equipment biochemical system at one side, wherein the integrated equipment biochemical system sequentially comprises a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic sedimentation tank, a coagulation tank and a biological filtration tank from left to right, each tank is separated by a partition plate, and a grid for water circulation is arranged on the partition plate, and is characterized in that one side of the adjusting tank flows water into the adjusting tank through the lift well, a basket fine grid is arranged at a water inlet of the lift well to intercept fine suspended matters and particulate matters, the other side of the adjusting tank directly inserts the water into the pre-denitrification tank, the anaerobic tank and the anoxic tank through a pipeline with a water inlet, wherein the water inlet in the pre-denitrification tank is positioned 0.1cm above the liquid level, the water inlet in the anaerobic tank is positioned 1.4m below the liquid level, the water inlet in the anoxic tank is positioned 0.1cm above the liquid level, ball valves are arranged at the outlet of the water inlet to facilitate water inflow adjustment, the grids of the pre-denitrification tank and the anaerobic tank are positioned at the bottom of the partition, the grids of the anaerobic tank and the anoxic tank are positioned at the liquid level at the top of the partition, the grids of the aerobic tank and the anoxic tank are positioned at the bottom of the partition, the grids of the aerobic tank and the aerobic aeration tank are positioned at the liquid level at the top of the partition, aerators are also arranged at the bottoms of the pre-denitrification tank, the anoxic tank and the aerobic tank, perforated pipe aerators are arranged at the bottoms of the pre-denitrification tank and the anoxic tank, microporous aerators are arranged at the bottoms of the anaerobic tank and the aerobic tank, a single-row microporous aerator is arranged at the bottom of the aerobic sedimentation tank, the coagulation tank is composed of a stirring coagulation tank, a sedimentation tank and at least one group of sludge hoppers at the bottom, the sludge hoppers are arranged at two sides of the bottom of the coagulation tank, and, and the effluent after precipitation separation in the precipitation tank enters a biological filter tank from a top overflow hole, the biological filter tank is divided into a water distribution area and a filter area, the coagulated effluent enters the bottom of the biological filter tank from the water distribution area, upflow filtration is adopted, and after being filtered by a filler, the effluent reaching the standard is automatically discharged from a top water outlet.
2. The integrated sewage treatment device for deep nitrogen and phosphorus removal of claim 1, wherein fixed bed fillers are added in the pre-denitrification tank, the anoxic tank and the aerobic tank, the fillers are formed by serially connecting and fixing suspension ball fillers, the filler interval is 10-20 cm, polyurethane sponge fillers are filled in the suspension ball fillers, and the filling rate is more than or equal to 60%.
3. The integrated sewage treatment device for deep nitrogen and phosphorus removal of claim 1, wherein an electromagnetic valve is arranged in an air inlet pipe of an aerator at the bottom of the anaerobic tank to control air inlet frequency, the anaerobic tank can be switched between an anaerobic function and an aerobic function, and the electromagnetic valve controls the mode of opening for 10-30 s and closing for 1-3 min to realize an anaerobic effect.
4. The integrated sewage treatment plant for deep nitrogen and phosphorus removal as claimed in claim 1, wherein two sets of internal settling tanks are installed at the positions close to the tank wall on both sides of a single row of microporous aerators arranged at the bottom of the aerobic settling tank, the internal settling tanks adopt a bottom inflow and bottom gravity backflow mode, the inclination angle of a mud bucket at the bottom of the settling tank is 55 degrees, two sets of triangular weirs for water passing from the top of the settled water enter the coagulation tank, the triangular weir at the top is positioned at one side of the partition board of the aerobic settling tank and the coagulation tank, and a baffle is arranged at the front end of the triangular weir far away from the partition board to prevent scum from entering the coagulation tank.
5. The integrated sewage treatment plant for deep nitrogen and phosphorus removal of claim 1, wherein the biological filtration tank comprises a water distribution zone and a biological filtration zone on one side, the coagulating sedimentation water enters the bottom of the biological filtration zone after being uniformly distributed in the water distribution zone, a water passing baffle is welded in a water passing channel at the bottom of the water distribution zone to ensure uniform distribution of water, the water passing baffle has an inclination angle of 135 degrees, the water is collected by a top water collecting triangular weir after upflow filtration, the biological filtration zone comprises a bottom stainless steel baffle, a filler bearing layer, a filler/filter material and a top stainless steel baffle from bottom to top, a rectangular aerator consisting of perforated aeration pipes is arranged between the bottom stainless steel baffle and the filler bearing layer, the aeration pipes on the tank wall are connected into the aerator through electromagnetic type membrane gas supply, and the air pump is used for periodically back-washing the filler/filter material in the tank, the bottom of the biological filter tank is provided with a backwashing water discharge pipe and a backwashing water discharge air inlet pipe, air backwashing is carried out periodically, after the air backwashing, backwashing liquid is discharged into the regulating tank through the backwashing water discharge pipe, the filter tank is emptied and enters the next water inlet process, a filler/filter material in the biological filter tank is filled into a filter material container processed by a stainless steel perforated plate, semicircular hoisting lugs for facilitating hoisting are arranged on two sides of the top of the filter material container, manual and convenient replacement of the filter material can be realized, the filler/filter material is in a modularized mode, and can be replaced by quartz sand/active carbon to form a sand filter tank/active carbon filter tank, volcanic filter material to form an aeration biological filter tank or a denitrification filter tank, and sulfur composite filter material to form a self-supported denitrification filter tank, so that different sewage treatment discharge standards are met.
6. The integrated sewage treatment device for deep nitrogen and phosphorus removal of claim 1, wherein 3 sets of sludge air-lift pipes are arranged in the aerobic sedimentation tank, the sludge air-lift pipes are respectively an air-lift sludge discharge pipe at the tank end and an air-lift sludge return pipe at the tank end, the air-lift sludge discharge pipe discharges the residual sludge in the biochemical tank out of the system, the air-lift sludge return pipe returns the nitrified liquid to the pre-denitrification tank and the anoxic tank respectively, an electromagnetic valve is arranged at an air inlet pipe of the air-lift sludge discharge pipe, air inlet is periodically and automatically opened for air-lift sludge discharge, an air inlet pipe of the air-lift sludge return pipe is provided with an adjusting ball valve, and the sludge discharge amount and the sludge return amount.
7. The integrated sewage treatment plant for deep nitrogen and phosphorus removal of claim 1 or 4, wherein 2 sets of gas stripping sludge discharging pipes are arranged in the coagulation tank, and correspond to 2 precipitated sludge hoppers respectively, and the coagulated excess sludge is discharged out of the system through the gas stripping sludge discharging pipes.
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| CN202020900026.2U CN212334940U (en) | 2020-05-26 | 2020-05-26 | Integrated sewage treatment device for deep denitrification and dephosphorization |
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| CN202020900026.2U CN212334940U (en) | 2020-05-26 | 2020-05-26 | Integrated sewage treatment device for deep denitrification and dephosphorization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111592185A (en) * | 2020-05-26 | 2020-08-28 | 水艺控股集团股份有限公司 | Integrated sewage treatment device and method for deep nitrogen and phosphorus removal |
| CN114804354A (en) * | 2022-06-24 | 2022-07-29 | 北京涞澈科技发展有限公司 | Biological rotary drum denitrification filter tank and denitrification treatment system based on sulfur autotrophy |
-
2020
- 2020-05-26 CN CN202020900026.2U patent/CN212334940U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111592185A (en) * | 2020-05-26 | 2020-08-28 | 水艺控股集团股份有限公司 | Integrated sewage treatment device and method for deep nitrogen and phosphorus removal |
| CN114804354A (en) * | 2022-06-24 | 2022-07-29 | 北京涞澈科技发展有限公司 | Biological rotary drum denitrification filter tank and denitrification treatment system based on sulfur autotrophy |
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