CN102276103B - Integrated in-situ denitrification culture wastewater biological treatment device and treatment method - Google Patents
Integrated in-situ denitrification culture wastewater biological treatment device and treatment method Download PDFInfo
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Abstract
An integrated in-situ denitrification culture wastewater biological treatment device and treatment method relate to a sewage treatment device and treatment method. The invention aims to provide a treatment device and treatment method with low sludge yield, no refluxing process and good ammonia nitrogen treatment effect. The treatment device comprises a pool body, wherein the inside of the pool body is divided into an anaerobic carbon-removing area, an aerobic nitrification and precipitation area and an anoxic denitrification area through a plurality of partition plates; the aerobic nitrification and precipitation area comprises an aerobic aeration chamber, a precipitation chamber and the forth falling compartment; the anaerobic carbon-removing area is communicated with the upper part of the forth falling compartment, the bottom of the forth falling compartment is communicated with the bottom of the aerobic aeration chamber; the bottom of the aerobic aeration chamber is provided with an aeration device, the bottom of the aerobic aeration chamber is communicated with the bottom of the precipitation chamber; one side close to the precipitation chamber, of the middle part of the aerobic aeration chamber is provided with a stream-separating plate longitudinally; the stream-separating plate is used to form a stream-separating channel between the aerobic aeration chamber and the precipitation chamber; and the upper end of the stream-separating channel is communicated with the aerobic aeration chamber, and the lower end is communicated with the precipitation chamber.
Description
Technical field
The present invention relates to a kind of waste disposal plant and treatment process, particularly relate to a kind of integrated in-situ denitrification culture wastewater biological treatment device and treatment process.
Background technology
Although the development of China's city size livestock and poultry breeding industry starting evening, its growth momentum is very swift and violent, short more than ten years oneself reach sizable scale, and continue to be high speed development trend.The prevention & management polluting due to poultry industry lags behind developing rapidly of this industry greatly, and lacks basic data and the data of poultry industry contaminated system.When the develop rapidly of aquaculture brings great economic benefit to society, the environmental problem that the breeding wastewater of its discharge brings is also on the rise, and it is mainly ammonia and nitrogen pollution that breeding wastewater pollutes, and has become urban life, trade effluent the third-largest source of pollution afterwards.
Because the pollution problem attention degree for livestock and poultry breeding industry is inadequate all the time, the feature of the low profit of livestock and poultry breeding industry in addition, most of plant does not all carry out just effectively processing directly discharge to waste water of livestock poultry.Along with the aggravation of body eutrophication, people more and more pay attention to the qualified discharge problem of nitrogen in waste water, phosphorus, and eutrophication problem is one of topmost water pollution problems of facing of the world today.And waste water of livestock poultry has the advantages that suspended solids is high, organic concentration is high, ammonia nitrogen concentration is high, although Chinese scholars is processed and carried out lot of experiments research waste water of livestock poultry, with regard to existing technology application aspect, also there are a lot of problems.As: adopt nature treatment system to process, its treatment effect is subject to the impact of season, temperature and land area, and for the practical situation of having a large population and a few land for China, biologic treating technique will be the optimal selection that the limited regional breeding wastewater in soil is processed.But, water pollutant concentration after anaerobic treatment is still very high, particularly ammonia nitrogen does not have to remove substantially, enter after water body, bring out water body " eutrophication ", cause the disorder of aquatic ecosystem, and can also consume dissolved oxygen, cause water hypoxia, need to do the processing of further carrying out denitrogenation dephosphorizing.
In recent years, although wastewater treatment in China rate improves constantly, the water eutrophication problem being caused by nitrogen and phosphorus pollution does not only solve, and has day by day serious trend.Visible, the principal contradiction of sewage disposal is changed into the removal of nitrogen and phosphorus pollution thing gradually by the removal of organic pollutant.This just impels people to transform traditional activated sludge process, to improve the clearance of nitrogen, phosphorus.Nitrogen compound (NH
4 +-N and NO
3-N) molecular weight is smaller, cannot remove by adding medicament.In addition, if adopt physico-chemical processes, as utilize membrane separation technique to remove nitrogen compound, it is the most effective only having reverse osmosis membrane technology, but construction costs and running cost are also very high.Therefore the removal of nitrogen is difficult point and the emphasis of sewage disposal, only has and utilizes bio-denitrification technology to be only reasonable.On the other hand, the phosphorus compound in sewage utilizes bioremediation to be sometimes difficult for removing, but can realize satisfied phosphor-removing effect by dispensing coagulation.Therefore, bio-denitrification technology is the key point of advanced treatment of wastewater.
The current technique that realizes denitrogenation is a lot, the most representative technique mainly contains SBR method, A/0 method, oxidation ditch process, yet SBR method can only be applied in small sewage treatment plant, there is the application of the shortcoming ， municipal sewage plants such as pond appearance lay-up period is long, operational management is complicated seldom.And oxidation ditch process belongs to extended aeration technique, there is the shortcoming that capital cost and working cost are high.AA/0 biological denitrification process is the abbreviation of anaerobic/anoxic/aerobic biological denitrification dephosphorization process, that the current municipal sewage plant of China applies maximum a kind of denitrification process, denitrification moves under anoxia condition, the nitrated of the removal of carbonaceous organic material and ammonia nitrogen moves under aerobic condition, compare and there is lot of advantages with traditional multi-stage biological denitrification process, but by mineralized nitrogen, be just also nitric nitrogen, nitrate pollution do not realized to real removal.But much research only utilizes the A/A/O space environment of breeding wastewater, considers separately denitrogenation, lack the research of carbon-nitrogen ratio to nitrification and denitrification effect, too high COD is unfavorable for the growth of nitrification and denitrification bacterium, and then affects denitrification effect.As removed, need a large amount of backflow power, by effluent recycling, treatment condition are realized to denitrogenation to the transformation of anoxic by anaerobism again to aerobic, therefore sewage disposal load is high, running cost is too large, and this is that the ubiquitous energy consumption of current wastewater treatment in China factory's biological denitrificaion is high, efficiency is low and the shortcoming of fluctuation of service.If can effectively reduce backflow, reduce sludge yield, increase carbon source and the basicity in anti-nitration reaction pond, can guarantee the smooth realization of AA/0 biological denitrificaion.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of sludge yield little, without backflow, the integrated in-situ denitrification culture wastewater biological treatment device that ammonia nitrogen treatment effect is good and treatment process.
Integrated in-situ denitrification culture wastewater biological treatment device of the present invention, comprise pond body, in the body of described pond, by some baffle for separatings, be anaerobism de-carbon district, aerobic nitrification and settling region and anoxic denitrogenation district, wherein said anaerobism de-carbon district is longitudinally provided with some upward flow traverse baffles and lower to stream traverse baffle, described upward flow traverse baffle and to stream traverse baffle, anaerobism de-carbon is distinguished and to be divided at least one group of decline compartment and rising compartment down, described the first decline compartment, the second decline compartment and the first rising compartment, the second rising compartment cross arrangement, the first decline compartment in every group and the first rising compartment, the second decline compartment is connected by the passage to stream traverse baffle below under being arranged on therebetween with the second rising compartment, the first rising compartment between adjacent set is connected by being arranged on the passage of upward flow traverse baffle top therebetween with the second decline compartment, described the first rising compartment, the width of the second rising compartment is described the first decline compartment, the 3-5 of the second decline compartment doubly, the top of the first decline compartment in first group is connected with main water inlet tube, on described main water inlet tube, inlet valve is housed,
Described aerobic nitrification and settling region comprise aerobic aeration chamber, settling chamber and the 4th decline compartment, in described anaerobism de-carbon district, the top of the second rising compartment is connected with the top of the 4th decline compartment, the bottom of described the 4th decline compartment is connected with the bottom of aerobic aeration chamber, the bottom of described aerobic aeration chamber is provided with aerating apparatus, the bottom of aerobic aeration chamber is connected with the bottom of settling chamber, the middle part of aerobic aeration chamber is vertically arranged with cutoff board near settling chamber's one side, described cutoff board is separated out split channel between aerobic aeration Shi Yu settling chamber, the upper end of described split channel is connected with aerobic aeration chamber, lower end is connected with settling chamber,
Described anoxic denitrogenation district comprises the 3rd decline compartment and the 3rd rising compartment, described the 3rd top of decline compartment and the top of settling chamber are connected, the bottom of the 3rd decline compartment is connected with the bottom of the 3rd rising compartment, on the sidewall on the top of described the 3rd rising compartment, be provided with overflow weir, in described overflow weir, be provided with rising pipe, the top of described the 3rd decline compartment is connected with a minute water inlet pipe, and within described minute, water inlet pipe is connected with main water inlet tube by diverter valve;
Body top, described pond is provided with some working holes, described working hole is corresponding with anaerobism de-carbon district and anoxic denitrogenation district respectively, on working hole, be provided with cover plate, described cover plate is provided with venting hole, in described the first rising compartment, the second rising compartment, aerobic aeration district and the 3rd rising compartment, is provided with the filler that is suitable for microorganic adhesion.
Integrated in-situ denitrification culture wastewater biological treatment device of the present invention, wherein said pond body is the right cylinder longitudinally arranging, described settling chamber is arranged on pool center, and first group of first decline compartment in described anaerobism de-carbon district is adjacent with the 3rd decline compartment in anoxic denitrogenation district.
Integrated in-situ denitrification culture wastewater biological treatment device of the present invention, the inwall of wherein said settling chamber is provided with some downward-sloping swash plates.
Integrated in-situ denitrification culture wastewater biological treatment device of the present invention, the upper end of wherein said cutoff board is provided with to the baffle upper plate of aerobic solarization air cell inclination, and the lower end of cutoff board is provided with to the chin spoiler of settling chamber's inclination.
Integrated in-situ denitrification culture wastewater biological treatment device of the present invention, wherein said filler is square granule modified plasticized polyurethane strand foam.
Integrated in-situ denitrification culture wastewater biological treatment device of the present invention, wherein said anaerobism de-carbon is provided with two groups of rising compartments and decline compartment in district.
Breeding wastewater bioremediation of the present invention, comprises the steps:
[1] breeding wastewater after the clear excrement of overdrying is separated separated with liquid-liquid separation device is accessed to the main water inlet tube of above-mentioned treatment unit, waste water enters anaerobism de-carbon district, by the 4th decline compartment that flows into aerobic aeration and settling region at the first decline compartment, the second decline compartment and the first rising compartment, the second rising compartment;
[2] waste water enters aerobic aeration chamber from the bottom of the 4th decline compartment and carries out aerobic micro-aeration, wherein aerobic micro-aeration oxygen supply intensity on be limited to liquid phase dissolved oxygen level lower than 2mgO
2/ L;
[3] waste water after aerobic aeration enters split channel, enters bottom, settling chamber from split channel lower end, adjusts the position of cutoff board, changes the width of split channel, and making waterpower decline flow velocity in split channel is 0.2-1.0m/s;
[4] waste water upwards flows from bottom, settling chamber, and bottom, aerobic aeration chamber is got back in the dirt sedimentation in waste water, again with waste water mixed aeration;
[5] waste water after precipitation enters the 3rd decline compartment in anoxic denitrogenation district from the top of settling chamber, open diverter valve, make part breeding wastewater directly enter the 3rd decline compartment, after mixing, waste water enters the 3rd rising compartment and the microorganism that adheres to modified polyurethane plastic foam fully contacts from the 3rd decline cell bottom, then enter in the overflow weir of the 3rd rising upper compartment, then flow out from rising pipe.
Breeding wastewater bioremediation of the present invention, wherein said anaerobism de-carbon district hydraulic detention time is 22h, aerobic micro-aeration hydraulic detention time is 7.5h, settling chamber's hydraulic detention time is 0.5h, anoxic denitrogenation district hydraulic detention time is 6h, the waste water flowing out from rising pipe after circulation primary is introduced water inlet pipe again, and circulating twice is a complete reaction time.
Breeding wastewater bioremediation of the present invention, wherein said main water inlet tube flooding quantity is 4-5:1 with the ratio of minute water inlet pipe flooding quantity.
Breeding wastewater bioremediation of the present invention, wherein said anoxic denitrogenation district influent COD: NH
4 +-N is less than 4:1.
Integrated in-situ denitrification culture wastewater biological treatment device of the present invention and treatment process are converted into by realizing the transformation sequentially of anaerobic-aerobic-anaerobic environment from the time in traditional denitrification process AA/O the transformation that spatially realizes anaerobic-aerobic-anaerobic environment order, by do not stop to occur anaerobism in water (flow) direction, aerobic, anaerobic environment realizes denitrogenation, with minute water inlet pipe, to anoxic denitrogenation district, supplement the required carbon source of denitrification simultaneously, do not need to reflux, the mud natural back flow of aerobic generation is in aerobic aeration chamber, realize the effectively catching of biomass, sludge concentration is significantly declined, a large amount of backflow power charges and sludge disposal expense have been saved, carbon element pollution and nitrate pollution to sewage have good removal effect, improved the processing efficiency of reactor simultaneously.
Below in conjunction with accompanying drawing, integrated in-situ denitrification culture wastewater biological treatment device of the present invention and treatment process are described further.
Accompanying drawing explanation
Fig. 1 is the structural representation of integrated in-situ denitrification culture wastewater biological treatment device of the present invention;
Fig. 2 is I-I directional profile figure in Fig. 1;
Fig. 3 is II-II directional profile figure in Fig. 1;
Fig. 4 is III-III directional profile figure in Fig. 1.
Embodiment
As shown in Figure 1, integrated in-situ denitrification culture wastewater biological treatment device of the present invention comprises pond body 23, pond body 23 is the right cylinder longitudinally arranging, in pond body 23, by some baffle for separatings, be anaerobism de-carbon district, aerobic nitrification and settling region and anoxic denitrogenation district, anaerobism de-carbon district is longitudinally provided with some upward flow traverse baffles 24 and lower to stream traverse baffle 25, upward flow traverse baffle 24 and to stream traverse baffle 25, anaerobism de-carbon is distinguished and to be divided into two groups of decline compartments and rising compartment down, the first decline compartment 1, the second decline compartment 3 and the first rising compartment 2, the second rising compartment 4 cross arrangement, the first decline compartment 1 in every group and the first rising compartment 2, the second decline compartment 3 is connected by the passage to stream traverse baffle 25 belows under being arranged on therebetween with the second rising compartment 4, the first rising compartment 2 between adjacent set is connected by being arranged on the passage of upward flow traverse baffle 24 tops therebetween with the second decline compartment 3, the first rising compartment 2, the width of the second rising compartment 4 is first decline compartments 1, 4 times of the second decline compartment 3, the first rising compartment 2, in the second rising compartment 4, be filled with the square granule modified urethane plastic foam stuffing 19 that is suitable for microorganic adhesion, adopt upward flow traverse baffle 24 and lower to stream traverse baffle 25, extend flow path, change flow velocity, strengthen sewage and be attached to the abundant contact of microorganism in square granule modified urethane plastic foam stuffing 19.The top of the first decline compartment 1 in first group is connected with main water inlet tube 12, and inlet valve 21 is housed on main water inlet tube 12.
Shown in Fig. 2 and Fig. 3, aerobic nitrification and settling region comprise aerobic aeration chamber 6, settling chamber 7 and the 4th decline compartment 5, in anaerobism de-carbon district, the top of the second rising compartment 4 is connected with the top of the 4th decline compartment 5, the bottom of the 4th decline compartment 5 is connected with the bottom of aerobic aeration chamber 6, the bottom of aerobic aeration chamber 6 is provided with aerating apparatus 20, the bottom of aerobic aeration chamber 6 is connected with the bottom of settling chamber 7, settling chamber 7 is arranged on Chi Ti 23 centers, and some downward-sloping swash plates 22 are installed on the inwall of settling chamber 7.The middle part of aerobic aeration chamber 6 is vertically arranged with cutoff board 16 near settling chamber's 7 one sides, cutoff board 16 is separated out split channel 10 between aerobic aeration chamber 6 and settling chamber 7, the upper end of split channel 10 is connected with aerobic aeration chamber 6, lower end is connected with settling chamber 7, the upper end of cutoff board 16 is provided with to the baffle upper plate 27 of aerobic solarization air cell 6 inclinations, and the lower end of cutoff board 16 is provided with 7 chin spoilers 28 that tilt to settling chamber.In aerobic aeration chamber 6, be filled with the square granule modified urethane plastic foam stuffing 19 that is suitable for microorganic adhesion.
Shown in Fig. 4, anoxic denitrogenation district comprises the 3rd decline compartment 8 and the 3rd rising compartment 9, first group of first decline compartment 1 in anaerobism de-carbon district is adjacent with the 3rd decline compartment 8 in anoxic denitrogenation district, the top of the 3rd decline compartment 8 is connected with the top of settling chamber 7, the bottom of the 3rd decline compartment 8 is connected with the bottom of the 3rd rising compartment 9, is filled with the square granule modified urethane plastic foam stuffing 19 that is suitable for microorganic adhesion in the 3rd rising compartment 9.On the sidewall on the top of the 3rd rising compartment 9, be provided with overflow weir 15, the top that is provided with rising pipe 11, the three decline compartments 8 in overflow weir 15 is connected with a minute water inlet pipe 12 ', and a minute water inlet pipe 12 ' is connected with main water inlet tube 12 by diverter valve 21 '.
Breeding wastewater bioremediation of the present invention, comprises the steps:
[1] breeding wastewater after the clear excrement of overdrying is separated separated with liquid-liquid separation device is accessed to the main water inlet tube 12 of above-mentioned treatment unit, waste water quality is that COD is 6000mg/L, NH
4 +-N is 500mg/L, TN is 18mg/L, open inlet valve 21, make 80% waste water enter anaerobism de-carbon district, by the 4th decline compartment 5 that flows into aerobic aeration and settling region at the first decline compartment 1, the second decline compartment 3 and the first rising compartment 2, the second rising compartment 4;
[2] waste water enters aerobic aeration chamber 6 from the bottom of the 4th decline compartment 5 and carries out aerobic micro-aeration, wherein aerobic micro-aeration oxygen supply intensity on be limited to liquid phase dissolved oxygen level lower than 2mgO
2/ L;
[3] waste water after aerobic aeration enters split channel 10, from split channel 10 lower ends, enters 7 bottoms, settling chamber, adjusts the position of cutoff board 16, changes the width of split channel 10, and making the interior waterpower decline of split channel 10 flow velocity is 0.2-1.0m/s;
[4] waste water upwards flows 7 bottoms from settling chamber, and the dirt sedimentation automatic back flow in waste water, to 6 bottoms, aerobic aeration chamber, again with waste water mixed aeration, is realized the object of sludge reduction;
[5] from settling chamber, 7 top enters the 3rd decline compartment 8 in anoxic denitrogenation district to the waste water after precipitation, opens diverter valve 21 ', makes 20% breeding wastewater directly enter the 3rd decline compartment 8, the three decline compartment 8 influent CODs: NH
4 +-N is less than 4:1, supplements the required carbon source of denitrification.The microorganism that enters the 3rd rising compartment 9 from the 3rd decline compartment 8 bottoms after waste water mixing and adhere to modified polyurethane plastic foam fully contacts, and then enters in the overflow weir 15 on the 3rd rising compartment 9 tops, then flows out from rising pipe 11.Design anaerobism de-carbon district hydraulic detention time is 22h, aerobic micro-aeration hydraulic detention time is 7.5h, settling chamber's hydraulic detention time is 0.5h, anoxic denitrogenation district hydraulic detention time is 6h, the waste water flowing out from rising pipe 11 after circulation primary is introduced main water inlet tube 12 again, and circulating twice is a complete reaction time.
Waste water COD after processing a reaction time is 270mg/L, NH
4 +-N is 180mg/L, and treatment effect is significantly improved, and running cost is also effectively reduced.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (10)
1. an integrated in-situ denitrification culture wastewater biological treatment device, comprise pond body (23), in described pond body (23), by some baffle for separatings, be anaerobism de-carbon district, aerobic nitrification and settling region and anoxic denitrogenation district, it is characterized in that: described anaerobism de-carbon district is longitudinally provided with some upward flow traverse baffles (24) and lower to stream traverse baffle (25), described upward flow traverse baffle (24) and to stream traverse baffle (25), anaerobism de-carbon is distinguished and to be divided at least one group of decline compartment and rising compartment down, the first decline compartment (1), the second decline compartment (3) and the first rising compartment (2), the second rising compartment (4) cross arrangement, the first decline compartment (1) in every group and the first rising compartment (2), the second decline compartment (3) is connected by the passage to stream traverse baffle (25) below under being arranged on therebetween with the second rising compartment (4), the first rising compartment (2) between adjacent set is connected by being arranged on the passage of upward flow traverse baffle (24) top therebetween with the second decline compartment (3), described the first rising compartment (2), the width of the second rising compartment (4) is described the first decline compartment (1), the 3-5 of the second decline compartment (3) doubly, the top of the first decline compartment (1) in first group is connected with main water inlet tube (12), inlet valve (21) is housed on described main water inlet tube (12),
Described aerobic nitrification and settling region comprise aerobic aeration chamber (6), settling chamber (7) and the 4th decline compartment (5), in described anaerobism de-carbon district, the top of the second rising compartment (4) is connected with the top of the 4th decline compartment (5), the bottom of described the 4th decline compartment (5) is connected with the bottom of aerobic aeration chamber (6), the bottom of described aerobic aeration chamber (6) is provided with aerating apparatus (20), the bottom of aerobic aeration chamber (6) is connected with the bottom of settling chamber (7), the middle part of aerobic aeration chamber (6) is vertically arranged with cutoff board (16) near settling chamber's (7) one sides, described cutoff board (16) is separated out split channel (10) between aerobic aeration chamber (6) and settling chamber (7), the upper end of described split channel (10) is connected with aerobic aeration chamber (6), lower end is connected with settling chamber (7),
Described anoxic denitrogenation district comprises the 3rd decline compartment (8) and the 3rd rising compartment (9), the top of described the 3rd decline compartment (8) is connected with the top of settling chamber (7), the bottom of the 3rd decline compartment (8) is connected with the bottom of the 3rd rising compartment (9), on the sidewall on the top of described the 3rd rising compartment (9), be provided with overflow weir (15), in described overflow weir (15), be provided with rising pipe (11), the top of described the 3rd decline compartment (8) is connected with a minute water inlet pipe (12 '), described minute water inlet pipe (12 ') by diverter valve (21 '), be connected with main water inlet tube (12),
Described pond body (23) top is provided with some working holes (26), described working hole (26) is corresponding with anaerobism de-carbon district and anoxic denitrogenation district respectively, on working hole (26), be provided with cover plate (14), described cover plate (14) is provided with venting hole (13), in described the first rising compartment (2), the second rising compartment (4), aerobic aeration chamber (6) and the 3rd rising compartment (9), is provided with the filler (19) that is suitable for microorganic adhesion.
2. integrated in-situ denitrification culture wastewater biological treatment device according to claim 1, it is characterized in that: the right cylinder of described pond body (23) for longitudinally arranging, described settling chamber (7) is arranged on pond body (23) center, and first group of first decline compartment (1) in described anaerobism de-carbon district is adjacent with the 3rd decline compartment (8) in anoxic denitrogenation district.
3. integrated in-situ denitrification culture wastewater biological treatment device according to claim 2, is characterized in that: the inwall of described settling chamber (7) is provided with some downward-sloping swash plates (22).
4. integrated in-situ denitrification culture wastewater biological treatment device according to claim 3, it is characterized in that: the upper end of described cutoff board (16) is provided with to the baffle upper plate (27) of aerobic solarization air cell (6) inclination, and the lower end of cutoff board (16) is provided with the chin spoiler (28) that (7) tilt to settling chamber.
5. integrated in-situ denitrification culture wastewater biological treatment device according to claim 4, is characterized in that: described filler (19) is square granule modified plasticized polyurethane strand foam.
6. integrated in-situ denitrification culture wastewater biological treatment device according to claim 5, is characterized in that: described anaerobism de-carbon is provided with two groups of rising compartments and decline compartment in district.
7. a breeding wastewater bioremediation, comprises the steps:
[1] breeding wastewater after the clear excrement of overdrying is separated separated with liquid-liquid separation device is accessed to the main water inlet tube for the treatment of unit (12) as claimed in claim 1, waste water enters anaerobism de-carbon district, by the 4th decline compartment (5) that flows into aerobic aeration and settling region at the first decline compartment (1), the second decline compartment (3) and the first rising compartment (2), the second rising compartment (4);
[2] waste water enters aerobic aeration chamber (6) from the bottom of the 4th decline compartment (5) and carries out aerobic micro-aeration, wherein aerobic micro-aeration oxygen supply intensity on be limited to liquid phase dissolved oxygen level lower than 2mgO
2/ L;
[3] waste water after aerobic aeration enters split channel (10), from split channel (10) lower end, enter bottom, settling chamber (7), adjust the position of cutoff board (16), change the width of split channel (10), making the interior waterpower decline of split channel (10) flow velocity is 0.2-1.0m/s;
[4] waste water upwards flows (7) bottom from settling chamber, and bottom, aerobic aeration chamber (6) is got back in the dirt sedimentation in waste water, again with waste water mixed aeration;
[5] from settling chamber, the top of (7) enters the 3rd decline compartment (8) in anoxic denitrogenation district to the waste water after precipitation, open diverter valve (21 '), make part breeding wastewater directly enter the 3rd decline compartment (8), the microorganism that enters the 3rd rising compartment (9) from the 3rd decline compartment (8) bottom after waste water mixes and adhere to modified polyurethane plastic foam fully contacts, then enter in the overflow weir (15) on the 3rd rising compartment (9) top, then flow out from rising pipe (11).
8. breeding wastewater bioremediation according to claim 7, it is characterized in that: described anaerobism de-carbon district hydraulic detention time is 22h, aerobic micro-aeration hydraulic detention time is 7.5h, settling chamber's hydraulic detention time is 0.5h, anoxic denitrogenation district hydraulic detention time is 6h, the waste water flowing out from rising pipe (11) after circulation primary is introduced main water inlet tube (12) again, and circulating twice is a complete reaction time.
9. according to the breeding wastewater bioremediation described in claim 7 or 8, it is characterized in that: described main water inlet tube (12) flooding quantity is 4-5:1 with the ratio of minute water inlet pipe (12 ') flooding quantity.
10. breeding wastewater bioremediation according to claim 9, is characterized in that: described anoxic denitrogenation district influent COD: NH
4 +-N is less than 4:1.
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| CN109626563A (en) * | 2018-12-21 | 2019-04-16 | 海南大学 | A kind of domestic sewage in rural areas deep denitrification method |
| CN110845009B (en) * | 2019-11-09 | 2023-08-01 | 上海电站辅机厂有限公司 | Anoxic and aerobic biochemical integrated device |
| CN110845011B (en) * | 2019-12-17 | 2024-06-07 | 吉林十亩恬源环境科技有限公司 | Multi-medium biological filter and distributed sewage treatment device |
| CN112062288B (en) * | 2020-04-23 | 2024-03-05 | 冯晓明 | Multistage circulation vertical partition sewage denitrification and dephosphorization treatment process and treatment device thereof |
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| KR100821659B1 (en) * | 2007-02-28 | 2008-04-14 | (주)이엔바이오21 | E-mbr system |
| CA2701786A1 (en) * | 2007-10-09 | 2009-07-02 | Degremont | Method and plant for the treatment of effluents containing nitrogen in a sequencing batch reactor |
| CN101638270A (en) * | 2008-08-02 | 2010-02-03 | 中国石油化工股份有限公司 | System for biochemically treating wastewater with high ammonia nitrogen concentration |
| CN201313861Y (en) * | 2008-12-31 | 2009-09-23 | 东北农业大学 | Integrated livestock wastewater biological treatment device |
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