CN112520941A - Switchable efficient sewage purification treatment system coupled by physicochemical biological membranes - Google Patents
Switchable efficient sewage purification treatment system coupled by physicochemical biological membranes Download PDFInfo
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- CN112520941A CN112520941A CN202011299158.5A CN202011299158A CN112520941A CN 112520941 A CN112520941 A CN 112520941A CN 202011299158 A CN202011299158 A CN 202011299158A CN 112520941 A CN112520941 A CN 112520941A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/15—N03-N
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
Abstract
The utility model provides a changeable high-efficient sewage purification processing system of materialization biomembrane coupling, connects gradually by equalizing basin, three-dimensional combination grid, high-efficient just heavy pond system, biological denitrification system and novel filter cloth filtering pond, high-efficient just heavy pond system includes high-efficient just heavy pond, coupling filtering ponds and high-efficient just heavy pond charge device, and the coupling filtering ponds coupling is at high-efficient just heavy pond outer wall, and high-efficient just heavy pond charge device and high-efficient just heavy pond intercommunication, biological denitrification system includes suspension filler nitrification tank, suspension filler denitrification tank and suspension filler denitrification tank charge device, and suspension filler nitrification tank and suspension filler denitrification tank intercommunication, suspension filler denitrification tank charge device and suspension filler denitrification tank intercommunication. The system is a coupling of a series of physicochemical treatment units and a unique biological treatment unit-biological membrane denitrification unit, has the advantages of quick start and short debugging period, simultaneously improves the impact load resistance and the running stability of the system, and saves the occupied land.
Description
Technical Field
The invention particularly relates to a switchable efficient sewage purification treatment system coupled by a physicochemical biological membrane, belonging to the technical field of sewage treatment.
Background
At present, with the great increase of the urbanization rate and the dense gathering of urban population, the urban environmental problems are increasingly prominent and are influenced by the aspects of urban development concept, insufficient capital investment, investment and financing mechanism and the like, a lot of cities have serious short sewage collection and treatment facilities, and urban water environment ' incurs for a long time ' novel urban diseases ' such as ' continuous deterioration ' become main environmental problems influencing public acquaintance and happiness.
Therefore, in order to improve the water environment quality, policy documents such as 'urban black and odorous water body treatment working guidelines', 'urban sewage treatment upgrading and efficiency-improving three-year action schemes' (2019-2021) and the like are successively issued in recent years in China, so that the problems of direct drainage of domestic sewage, blank pipe network collection, combined system overflow pollution, rainwater runoff pollution and rainwater pipeline scouring pollution are clearly indicated, and the problems are important symptoms of black and odorous water bodies at present, but most of integrated equipment at present has the problems of slow start, long debugging period, insufficient operation stability, strong dependence of biochemical treatment on activated sludge, poor impact load resistance, incapability of considering both treatment capacity and efficiency and the like, and an efficient sewage purification treatment system is urgently needed and can be used as a temporary or permanent treatment measure to solve the problem of urban water quality pollution treatment.
Meanwhile, the implementation of rural policies such as 'village joyful strategy' in China is seen, the schedule is synchronously lifted for village and town water environment improvement tasks, dispersed sewage treatment and water body treatment of villages and towns become important tasks for village and town environment improvement, but the villages and towns in China are limited by factors such as technology, talents, funds, system mechanism and the like, so that a process system suitable for large-scale urban sewage treatment is seriously mismatched in the field of small-scale sewage treatment in the villages and towns in China, and a great number of problems of domestic sewage direct discharge, sewage holding pit and pond treatment, water body purification treatment, sewage pit and pond treatment, river-following sewage interception treatment and the like exist in the process of water body treatment in the villages and towns, and a simplified, standardized, complete and unattended high-efficiency sewage purification treatment system is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a switchable efficient sewage purification treatment system with coupled physical and chemical biological membranes, which is a coupling of a series of physical and chemical treatment units and a unique biological treatment unit-biological membrane denitrification unit, avoids the difficulties of culture and maintenance of activated sludge, has the advantages of quick start and short debugging period, improves the impact load resistance and the running stability of the system, and saves the occupied land.
As conceived above, the technical scheme of the invention is as follows: the utility model provides a changeable formula high efficiency sewage purification processing system of materialization biomembrane coupling which characterized in that: connect gradually by equalizing basin, three-dimensional combination grid, high-efficient pond system that just sinks, biological denitrogenation system and novel cloth filter, high-efficient pond system that just sinks includes high-efficient pond, coupling filtering ponds and the high-efficient pond charge device that just sinks, and the coupling filtering ponds coupling is at high-efficient pond outer wall that just sinks, and high-efficient pond charge device that just sinks communicates with high-efficient pond that just sinks, biological denitrogenation system includes suspended filler nitrification tank, suspended filler denitrification tank and suspended filler denitrification tank charge device, and suspended filler denitrification tank communicates with suspended filler denitrification tank, and suspended filler denitrification tank charge device communicates with suspended filler denitrification tank.
Furthermore, the effluent of the suspended filler nitrification tank is directly connected with the novel cloth filter.
Furthermore, the water outlet of the coupling filter tank is directly connected with the novel cloth filter.
Furthermore, the hydraulic retention time of the high-efficiency primary sedimentation tank system is within 2.5h, wherein the hydraulic retention time of the high-efficiency primary sedimentation tank is between 0.5 and 2h, the retention time of sludge is between 5 and 15d, and the hydraulic retention time of the coupling filter tank is within 0.5 h.
Furthermore, the coupling filter tank is coupled on the outer wall of the high-efficiency primary sedimentation tank in a half-cycle or full-cycle mode.
Further, a suspended filler layer with a suspended biological membrane is filled in the suspended filler nitrification tank, the filling ratio is 30-60%, and the specific surface area of the suspended filler is 400-2/m3。
Further, an aeration device is arranged in the suspended filler nitrification tank.
Further, the nitration rate of the biological membrane in the suspended filler nitration tank is not less than 0.5gNO3 --N/(m2Effective surface area d, 20 ℃).
Further, a suspended filler layer with a suspended biofilm is filled in the suspended filler denitrification tank, the filling ratio is 40-80%, and the specific surface area of the suspended filler is 600-800m2/m3。
Further, the denitrification rate of the biological membrane in the suspended filler denitrification tank is not less than 2kgNO3 --N/(m2Effective surface area d, 20 ℃).
Furthermore, the novel cloth filter adopts a detachable flat filter cloth filtering mode, and the hydraulic retention time is within 0.5 h.
The invention has the following advantages and positive effects:
1. the invention integrates the functions of high-efficiency interception by a three-dimensional combined grating, high-efficiency primary sedimentation tank system with a coupling filtering function, a biomembrane denitrification system, novel cloth filter filtering and the like into a whole, realizes the coupling of physicochemical treatment and a biomembrane treatment functional unit, realizes the stable water outlet of main pollutant indexes reaching the first-class A standard and higher requirements of GB18918-2002, avoids the difficult problems of activated sludge culture and maintenance of the traditional integrated equipment, and has the advantages of quick start, short debugging period, stable operation, strong impact load resistance and the like.
2. The invention can flexibly switch and quickly combine the process units according to the water quality condition of inlet water, simultaneously meets various treatment situations of sewage treatment, temporary sewage interception treatment of a domestic sewage straight discharge port and a blank area, water body bypass purification, combined system overflow pollution, construction precipitation, foundation pit drainage and the like, and has wide application range. The three-dimensional combined grating, the high-efficiency primary sedimentation tank system with the coupling filtering function and the novel cloth filter tank are filtered into a physicochemical treatment unit, and the three-dimensional combined grating couples grid plates with different apertures into a whole, so that the comprehensive filtering effect of the coarse, fine or superfine grating after one-time lifting is realized, and the occupied area is saved; the efficient primary sedimentation tank system with the coupling filtering function realizes the functions of adsorption, flocculation and sedimentation by measures of high sludge level operation, chemical phosphorus removal agent addition and the like in the tank, realizes the continuous filtration of effluent of the primary sedimentation tank by the peripheral filtering system coupled with the efficient primary sedimentation tank, and saves occupied land at the same time; the novel cloth filter is small-scale integrated cloth filtering equipment, is used as an independent unit, and has micron-sized filtering and self-cleaning functions. The biofilm denitrification system is the only biological treatment unit of the system, the suspended filler is used for off-line biofilm culturing, and the suspended filler is added to the biofilm treatment unit at one time, so that the starting and debugging period can be greatly reduced, the unit has no activated sludge, the nitrification and denitrification functions are realized only through the biofilm on the filler, and the denitrification requirement of the system is met.
3. The three-dimensional combined grating, the high-efficiency primary sedimentation tank system with the coupling filtering function, the biomembrane denitrification system and the novel filter cloth filter tank are combined by innovative process units, so that the stable operation of the process is realized, the targets of province and land are also considered, and the three-dimensional combined grating is suitable for the fields of small-scale urban domestic sewage treatment, urban water body water environment treatment, village and town sewage treatment and the like.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a block diagram of a high efficiency primary settling tank system;
FIG. 3 is a structural view of a biological denitrification system.
Description of reference numerals:
1-a regulating reservoir; 2-a three-dimensional combined grid; 3-high efficiency primary settling tank system; 4-a biological denitrification system; 5-a novel cloth filter; 3-1-high efficiency primary sedimentation tank water inlet pipe; 3-2-high-efficiency primary settling tank; 3-3-coupling a filtration tank; 3-4-water outlet pipe of high-efficiency primary sedimentation tank; 3-5-high-efficiency primary sedimentation tank dosing device; 3-6-sludge discharge pipe; 4-1-a water inlet pipe of the nitrification tank; 4-2-suspended filler nitration tank; 4-3-suspended filler denitrification tank; 4-4-a water outlet pipe of the nitrification tank; 4-5-a water outlet pipe of the denitrification tank; 4-6-a dosing device of a denitrification tank for suspended fillers.
Detailed Description
As shown in figure 1, the invention provides a switchable efficient sewage purification treatment system with coupling of physicochemical biological membranes, which is formed by sequentially connecting an adjusting tank 1, a three-dimensional combined grating 2, an efficient primary sedimentation tank system 3, a biological denitrification system 4 and a novel cloth filter 5. The three-dimensional combined grating couples the different aperture grids into a whole.
As shown in figure 2, the high-efficiency primary sedimentation tank system 3 comprises a high-efficiency primary sedimentation tank water inlet pipe 3-1, a high-efficiency primary sedimentation tank 3-2, a coupling filter tank 3-3, a high-efficiency primary sedimentation tank water outlet pipe 3-4, a high-efficiency sedimentation tank dosing device 3-5 and a sludge discharge pipe 3-6. The high-efficiency primary sedimentation tank 3-2 forms a sludge layer with an adsorption and filtration function by controlling the sludge level inside the high-efficiency primary sedimentation tank (the effective tank depth is 30% -80%), the hydraulic retention time of the high-efficiency primary sedimentation tank 3-2 is 0.5-2h, and the sludge retention time is 5-15 d. Sewage from the three-dimensional combined grating 2 enters a high-efficiency primary sedimentation tank 3-2 through a high-efficiency primary sedimentation tank water inlet pipe 3-1, suspended matters in the sewage are subjected to primary sedimentation in the high-efficiency primary sedimentation tank 3-2 to form a sludge layer with a certain height and adsorption and interception functions, and meanwhile, phosphorus removal agents and the like can be selectively added into the high-efficiency primary sedimentation tank 3-2 through a high-efficiency sedimentation tank dosing device 3-5 according to the actual requirement of pollutant removal; the sewage enters a coupling filter tank 3-3 after suspended matters and phosphates are removed by a high-efficiency primary sedimentation tank 3-2, the coupling filter tank 3-3 is arranged on the outer wall of the high-efficiency primary sedimentation tank 3-2 in a half-cycle or full-cycle manner, the sewage discharged by the high-efficiency primary sedimentation tank 3-2 is filtered by gravel or other filter media to remove suspended matters and phosphate flocs, and then the sewage flows out of a water outlet pipe 3-4 and enters a biological denitrification system 4.
As shown in figure 3, the biological denitrification system 4 comprises a water inlet pipe 4-1, a suspended filler nitrification tank 4-2, a suspended filler denitrification tank 4-3, a nitrification tank water outlet pipe 4-4, a denitrification tank water outlet pipe 4-5 and a suspended filler denitrification tank dosing device 4-6.
The suspended filler nitrification tank 4-2 is internally filled with suspended fillers with suspended biological membranes (the filling ratio is 30-60 percent), and the specific surface area of the suspended fillers is 400-2/m3The suspended filler nitrifying tank is internally provided with an aeration device which can be used for filling oxygen into the tank, and the suspended fillerThe hydraulic retention time of the nitrification tank is calculated according to the actual suspended filler type, the nitrification rate of the biological membrane and the ammonia nitrogen removal requirement of inlet and outlet water, and the nitrification rate of the biological membrane is not lower than 0.5gNO3 --N/(m2Effective surface area d, 20 ℃).
The inside of the suspended filler denitrification tank 4-3 is filled with suspended fillers (the filling ratio is 40% -80%) with suspended biofilm, and the specific surface area of the suspended fillers is 600-800m2/m3The hydraulic retention time of the suspended filler denitrification pool is calculated according to the actual suspended filler type, the biological membrane nitrification rate and the nitrate nitrogen removal requirement, and the biological membrane denitrification rate is not lower than 2kgNO3 --N/(m2Effective surface area d, 20 ℃).
When effluent has denitrification requirements, the dosing device 4-6 of the suspended filler denitrification tank and the suspended filler denitrification tank (4-3) are started simultaneously, the dosing device 4-6 adds an external carbon source into the suspended filler denitrification tank 4-3 for providing a carbon source required by denitrification reaction, the carbon source adding concentration is calculated according to the effluent total nitrogen removal requirement, the added carbon source COD concentration is not lower than 5 than the total nitrogen removal concentration, and the external carbon source can be selected from rapid carbon sources such as methanol, acetic acid, sodium acetate and the like.
The effluent of the high-efficiency primary sedimentation tank system 3 enters a suspended filler nitrification tank 4-2 through a nitrification tank water inlet pipe 4-1, nitrification reaction is carried out through a biological film attached to suspended fillers, ammonia nitrogen in sewage is removed and then flows out of a nitrification tank water outlet pipe 4-4, the effluent of the suspended filler nitrification tank 4-2 enters a suspended filler denitrification tank 4-3 in places with denitrification demands, an external carbon source in a suspended filler denitrification tank dosing device 4-6 also enters the suspended filler denitrification tank 4-3, denitrifying bacteria attached to the suspended fillers in the suspended filler denitrification tank 4-3 carry out denitrification by utilizing a carbon source input in a dosing device 4-6, so that the effect of removing total nitrogen is achieved, the effluent enters a subsequent novel filter cloth filter tank 5 through a denitrification tank water outlet pipe 4-5, after suspended matters are further removed by the novel cloth filter 5, the water is recycled or discharged according to actual requirements.
The novel cloth filter 5 adopts a detachable flat filter cloth filtering mode, and the hydraulic retention time is within 0.5 h.
The whole operation process of the invention is as follows: after the water quantity and the water quality of inlet water (sewage) are regulated by a regulating reservoir 1, the sewage in the regulating reservoir is lifted to an integrated three-dimensional combined grid 2 through a water inlet pump to intercept floating objects and large particles in the sewage, solid impurities such as particles and fibers are removed, the inlet water enters a high-efficiency primary sedimentation reservoir system 3, the functions of biological adsorption, chemical flocculation sedimentation and the like in the primary sedimentation reservoir are realized through high sludge level control and chemical agent addition of the high-efficiency primary sedimentation reservoir, suspended substances and phosphate in the sewage are further removed, the outlet water at the periphery of the high-efficiency primary sedimentation reservoir directly enters a coupling filter reservoir 3-3 arranged along the periphery of the high-efficiency primary sedimentation reservoir by gravity, when the denitrification function requirement is met, the outlet water of the coupling filter reservoir 3-3 enters a subsequent suspension filler nitrification reservoir 4-2 to finish the nitrification of ammonia nitrogen, and then enters a suspension filler denitrification reservoir 4-3 of a matched dosing device 4-6 (carbon source adding system) to finish denitrification, the effluent gravity enters a subsequent novel cloth filter system 5 to complete the deep filtration. When only nitrification is needed, the suspended filler denitrification tank 4-3 can be omitted, and the effluent of the suspended filler nitrification tank 4-2 directly enters the novel cloth filter system 5. When no denitrification requirement exists, the effluent of the coupling filter tank 3-3 directly enters the novel cloth filter 5.
According to the invention, after the fluctuation of the quality and quantity of inlet water is reduced by the front regulating tank, large blocks and fibrous impurities in the inlet water are removed by the integrated combined grating, granular suspended matters and phosphates in the inlet water are removed by the high-efficiency primary sedimentation tank system, ammonia nitrogen and total nitrogen in the sewage are removed by the biological denitrification system according to actual requirements, suspended matters and turbidity in the sewage are further removed by the novel cloth filter, and system functional units can be flexibly configured according to the requirement of the quality of the outlet water, so that the invention has the advantages of wide application range, stable operation effect, economy, energy conservation, land conservation and the like.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (11)
1. The utility model provides a changeable formula high efficiency sewage purification processing system of materialization biomembrane coupling which characterized in that: connect gradually by equalizing basin, three-dimensional combination grid, high-efficient pond system that just sinks, biological denitrogenation system and novel cloth filter, high-efficient pond system that just sinks includes high-efficient pond, coupling filtering ponds and the high-efficient pond charge device that just sinks, and the coupling filtering ponds coupling is at high-efficient pond outer wall that just sinks, and high-efficient pond charge device that just sinks communicates with high-efficient pond that just sinks, biological denitrogenation system includes suspended filler nitrification tank, suspended filler denitrification tank and suspended filler denitrification tank charge device, and suspended filler denitrification tank communicates with suspended filler denitrification tank, and suspended filler denitrification tank charge device communicates with suspended filler denitrification tank.
2. The switchable high-efficiency sewage purification treatment system coupled by the materialized biological membranes according to claim 1, wherein: the effluent of the suspended filler nitrification tank is directly connected with the novel cloth filter.
3. The switchable high-efficiency sewage purification treatment system coupled by the materialized biological membranes according to claim 1, wherein: the outlet water of the coupling filter tank is directly connected with the novel cloth filter.
4. The switchable high-efficiency sewage purification treatment system coupled by the materialized biological membranes according to claim 1, wherein: the hydraulic retention time of the high-efficiency primary sedimentation tank system is within 2.5h, wherein the hydraulic retention time of the high-efficiency primary sedimentation tank is between 0.5 and 2h, the retention time of sludge is between 5 and 15d, and the hydraulic retention time of the coupling filter tank is within 0.5 h.
5. The switchable high-efficiency sewage purification treatment system coupled by the materialized biological membranes according to claim 1, wherein: the coupling filter tank is coupled on the outer wall of the high-efficiency primary sedimentation tank in a half-cycle or full-cycle mode.
6. A method as claimed in claim 1Switchable efficient sewage purification treatment system coupled by physicochemical biological membranes, which is characterized in that: the inside of the suspension filler nitrification tank is filled with a suspension filler layer with a suspended biological membrane, the filling ratio is 30 percent-60 percent, and the specific surface area of the suspension filler is 400 DEG-800 m2/m3。
7. The switchable high-efficiency sewage purification treatment system coupled by the materialized biological membranes according to claim 1, wherein: an aeration device is arranged in the suspended filler nitrification tank.
8. The switchable high-efficiency sewage purification treatment system coupled by the materialized biological membranes according to claim 1, wherein: the nitration rate of the biological membrane in the suspended filler nitration tank is not less than 0.5gNO3 --N/(m2Effective surface area d, 20 ℃).
9. The switchable high-efficiency sewage purification treatment system coupled by the materialized biological membranes according to claim 1, wherein: the inside of the suspension filler denitrification tank is filled with a suspension filler layer with a biofilm, the filling ratio is 40 percent-80 percent, and the specific surface area of the suspension filler is 600-800m2/m3。
10. The switchable high-efficiency sewage purification treatment system coupled by the materialized biological membranes according to claim 1, wherein: the denitrification rate of the biological membrane in the suspended filler denitrification tank is not less than 2kgNO3 --N/(m2Effective surface area d, 20 ℃).
11. The switchable high-efficiency sewage purification treatment system coupled by the materialized biological membranes according to claim 1, wherein: the novel cloth filter adopts a detachable flat filter cloth filtering mode, and the hydraulic retention time is within 0.5 h.
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| CN202011299158.5A CN112520941A (en) | 2020-11-19 | 2020-11-19 | Switchable efficient sewage purification treatment system coupled by physicochemical biological membranes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116675341A (en) * | 2023-06-30 | 2023-09-01 | 环德(福建)环保科技有限公司 | Short-cut nitrification and denitrification series sewage treatment system and treatment method |
| CN116675341B (en) * | 2023-06-30 | 2024-05-14 | 环德(福建)环保科技有限公司 | Short-cut nitrification and denitrification series sewage treatment system and treatment method |
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| KR20030016634A (en) * | 2001-08-21 | 2003-03-03 | 유니엔스(주) | A method for eliminating organic matters, nitrogen, and phosphorus containingin a high concentratedwastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116675341A (en) * | 2023-06-30 | 2023-09-01 | 环德(福建)环保科技有限公司 | Short-cut nitrification and denitrification series sewage treatment system and treatment method |
| CN116675341B (en) * | 2023-06-30 | 2024-05-14 | 环德(福建)环保科技有限公司 | Short-cut nitrification and denitrification series sewage treatment system and treatment method |
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Application publication date: 20210319 |