CN101327990B - Method for processing sewerage by A/O biological contact oxidation process - Google Patents
Method for processing sewerage by A/O biological contact oxidation process Download PDFInfo
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- CN101327990B CN101327990B CN2008100631747A CN200810063174A CN101327990B CN 101327990 B CN101327990 B CN 101327990B CN 2008100631747 A CN2008100631747 A CN 2008100631747A CN 200810063174 A CN200810063174 A CN 200810063174A CN 101327990 B CN101327990 B CN 101327990B
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Abstract
The invention provides a sewage treatment method using A/O biological contact oxidation process belonging to environmental engineering technology field, which solves the problems that in the prior art the adaptability of water quality is not strong, the impact resistance perfermance is weak, the effluent water quality is unstable and sludge bulks or the like. The sewage treatment method using A/Obiological contact oxidation process comprises the following steps: A. pretreatment; B. hydrolytic treatment; C. aeration treatment; D. deposition and disinfection, and has advantages of high volume loading, rapid rate of biodegradation and low cost.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, relate in particular to a kind of biomembrance process and promptly adopt A/O biological contact oxidation process sewage treatment method.Belong to field of environment engineering technology.
Background technology
Modern sewage disposal technology is pressed degree of treatment and is divided, and can be divided into one-level, secondary and tertiary treatment.One-level is handled, and mainly removes the solid pollution material that is suspended state in the sewage, and the physical treatment process major part can only be finished the requirement that one-level is handled.Through the sewage that one-level is handled, BOD generally can remove about 30%, does not reach emission standard.One-level is handled the pre-treatment that belongs to second-stage treatment.Second-stage treatment is mainly removed the organic pollution materials (BOD, COD material) that is colloid and dissolved state in the sewage, and clearance can reach more than 90%, makes organic pollutant reach emission standard.Tertiary treatment, organism, nitrogen and the phosphorus etc. of further handling difficult degradation can cause solubility inorganics of body eutrophication etc.Main method has the biological carbon and phosphorous removal method, coagulant sedimentation, sand coarse aggregate ratio method, active carbon adsorption, ion exchange method and electric osmose analytical method etc.Whole process is after promoting through sewage pump by the raw waste water that thick lattice are deleted, delete or sieve rate device through lattice, enter settling pit afterwards, sewage through the sand water sepn enters primary sedimentation pond, more than handle (being physical treatment) for one-level, the water outlet of preliminary sedimentation tank enters biological treating equipment, activated sludge process is arranged, and (wherein the reactor of activated sludge process has the aeration tank, oxidation ditch etc.), the water outlet of biological treating equipment enters secondary sedimentation basins, the water outlet of second pond is through the sterilization discharging or enter tertiary treatment, and the one-level processing finishes to be second-stage treatment to this that tertiary treatment comprises the biological carbon and phosphorous removal method, coagulant sedimentation, sand filtration method, active carbon adsorption, ion exchange method and electroosmose process.The mud part of second pond is back to primary sedimentation pond or biological treating equipment, and a part enters sludge thickener, enters sludge digestion tank afterwards, and behind dehydration and drying plant, mud is utilized at last.The bigger aeration tank of floor space of adopting active sludge treatment sewage to need, not strong to water quality adaptability, impact resistance is poor, and the effluent quality instability also can produce sludge bulking.
Summary of the invention
Purpose of the present invention provides a kind of A/O of employing biological contact oxidation process to have volumetric loading height, fast, the lower-cost method of disposing of sewage of biodegradation rate.
Above-mentioned technical purpose of the present invention is implemented by the following technical programs: the method that a kind of A/O of employing biological contact oxidation process is disposed of sewage, and this method may further comprise the steps:
A, pre-treatment: the sewage that will handle is driven in the hydrolytic tank through sump pump after flowing into certainly and passing through pre-treatment in the water collecting basin;
B, hydrolysis treatment: fill up semi soft packing in the hydrolytic tank, utilize attached to being membranaceous anerobe or anoxic bacteria on the semi soft packing sewage in the hydrolytic tank was hydrolyzed processing after 3～6 hours, overflow is to Aerobic Pond;
C, aeration are handled: be filled with semi soft packing in the Aerobic Pond, Aerobic Pond is carried out aeration, utilize attached to being membranaceous aerobic bacteria on the semi soft packing sewage in the Aerobic Pond was carried out the aeration processing after 6～12 hours, overflow is to second pond;
D, precipitation, sterilization: overflow sewage to the second pond can directly be discharged in the environment after through precipitation and sterilization.
Water collecting basin in the steps A of the present invention plays sedimentary effect of initial stage, can precipitate rubbish such as finger stone in the sewage, solid plastic.Anerobe of adopting among the step B or anoxic bacteria can be that the active sludge of self is cultivated in the sewage, also can carry out the cultivation of anaerobic sludge by intermittent mode, detailed process is to pour in the hydrolytic tank through the anaerobic sludge of 2 all left and right sides static cultivation, volume accounts for about 1/10 of hydrolytic tank cumulative volume, be full of hydrolytic tank with the artificial distribution, use the roots blower aeration then once, anaerobic sludge is evenly distributed in the hydrolytic tank, after leaving standstill after a while, between the semi soft packing surfaces externally and internally of hydrolytic tank and filler, all form the back and closely knit microbial film.Aerobic bacteria can be that the active sludge of self is cultivated in the sewage among the step C, also the active sludge of inoculation can be joined in the Aerobic Pond, adds sewage and fills, and leaves standstill emptying about 24 hours; And then add the active sludge of inoculation, under the aeration state, grow microbial film at the internal surface of filler.
There is significant effects the residence time of sewage in hydrolytic tank and Aerobic Pond to sewage disposal, if overstand, nutritive substance exhaust the deterioration that causes wastewater treatment efficiency easily, if the residence time is too short, pollution substance also is not able to do in time promptly to be taken out of with water by the microorganism absorption, can cause process result degrades equally.The present invention stopped sewage 3～6 hours in hydrolytic tank, stopped in Aerobic Pond 6～12 hours, the nutritive ingredient in the sewage can satisfy the microbial growth demand, and the organic substance in the sewage can be in time by microbiological degradation, microorganism active is stronger, and treatment effect is better.Can in time replenish the required nutritive substance of microorganism growth in addition, after hydraulic load raises, help the biomembranous sluicing of aged, thereby help the metabolism of microorganism, wastewater treatment efficiency is better.
In the method that above-mentioned employing A/O biological contact oxidation process is disposed of sewage, the pretreated time in water collecting basin of the sewage described in the steps A is 8～15 hours.
In the method that above-mentioned employing A/O biological contact oxidation process is disposed of sewage, the semi soft packing described in the step B is a kind of in plastics semi soft packing or the vegetable fibre semi soft packing.Described plastics semi soft packing can be the vinyon semi soft packing, acrylic plastering semi soft packing etc., adopt semi soft packing, it has the flexibility of soft-filler and the rigidity of hard filler concurrently, the stronger cloth of gas distribution again outlet capacity is arranged, be improved at energy force rate soft-filler and the honeycomb filler of removing organic pollutant.Described vegetable fibre semi soft packing can be a mao bamboon fiber semi soft packing, also can be to be raw material with the wheat straw pulp, the Mierocrystalline cellulose semi soft packing of preparing through processes such as alkalization, yellows.Adopt the vegetable fibre semi soft packing in sewage treatment process, to produce sludge quantity seldom, with low cost, have the market competitiveness.
In the method that above-mentioned employing A/O biological contact oxidation process is disposed of sewage, the biomass of anerobe described in the step B or anoxic bacteria biofilm is 50～100g/m
3Form thick and closely knit microbial film on the filler of above-mentioned biomass in hydrolytic tank, if biomass too Gao Zehui causes nutritive ingredient undersupply in the sewage, cause the deterioration of wastewater treatment efficiency, if the biomass of biofilm is too low, pollution substance can not be absorbed by microorganism fully and cause process result degrades.
In the method that above-mentioned employing A/O biological contact oxidation process is disposed of sewage, the semi soft packing of filling among the step C accounts for 2/3～4/5 of whole Aerobic Pond volume, described semi soft packing is a kind of in plastics semi soft packing or the vegetable fibre semi soft packing, and the biomass of described aerobic bacteria biofilm is 50～100g/m
3Because Aerobic Pond need be reserved certain space and be used for aeration, reserve the space of Aerobic Pond volume 1/5～1/3 in the present invention and carry out aeration, described plastics semi soft packing can be the vinyon semi soft packing, acrylic plastering semi soft packing etc., adopt semi soft packing, it has the flexibility of soft-filler and the rigidity of hard filler concurrently, and the stronger cloth of gas distribution again outlet capacity is arranged, and is being improved than soft-filler and honeycomb filler aspect the ability of removing organic pollutant and the oxygen-transfer efficiency.Described vegetable fibre semi soft packing can be a mao bamboon fiber semi soft packing, also can be to be raw material with the wheat straw pulp, the Mierocrystalline cellulose semi soft packing of preparing through processes such as alkalization, yellows.Adopt the vegetable fibre semi soft packing in sewage treatment process, to produce sludge quantity seldom, with low cost, have the market competitiveness.The filler internal surface of above-mentioned biomass in Aerobic Pond forms yellow transparent shape microbial film, if biomass too Gao Zehui causes nutritive ingredient undersupply in the sewage, cause the deterioration of wastewater treatment efficiency, if the biomass of biofilm is too low, pollution substance can not be absorbed by microorganism fully and cause process result degrades.
In the method that above-mentioned employing A/O biological contact oxidation process is disposed of sewage, the aeration process described in the step C adopts the discontinuous aeration mode, and every aeration was interrupted 0.5 hour in 2 hours.If carry out aeration continuously, in aerobic microorganism and the sewage duration of contact of organic substance too short, pollution substance can not be fully absorbed by aerobic microbiological cause process result degrades; If do not carry out aeration, then the aerobic microbiological in the Aerobic Pond is understood mass mortality or is become anaerobion, can't play the effect of aerobic treatment.The present invention adopts the discontinuous aeration mode can be aerobic microbiological with sewage in organic substance fully contact and it decomposed fully, the aerobic microbiological in the Aerobic Pond can mass mortality yet in addition, has improved the efficient of sewage disposal.
In the method that above-mentioned employing A/O biological contact oxidation process is disposed of sewage, second pond described in the step D is provided with the dividing plate one that second pond is separated into lower chambers and upper chamber, be provided with the reflection retaining plate and export the thrust-augmenting nozzle that communicates in bottom chamber with filtering chamber, thrust-augmenting nozzle water outlet place is provided with to be fixed on the reflection retaining plate and is cone shape reflector, and the top of reflector faces the thrust-augmenting nozzle water outlet.Can go out to sputter all around when thrust-augmenting nozzle flows out and falls on the reflector through the water after hydrolysis and the aeration processing like this, thereby make the biological film formed active sludge that comes off can not be deposited in same place, but uniform deposition is in the lower chambers bottom.
In the method that above-mentioned employing A/O biological contact oxidation process is disposed of sewage, the sterilization described in the step D is carried out at the second pond water outlet, and sterilizing process adopts the mode of impacting chlorine tablets.Easy handling is sterilized thoroughly like this.
In sum, the present invention has the following advantages:
1, the present invention adopts method that the A/O biological contact oxidation process disposes of sewage to strengthen suddenly or water quality when changing suddenly when flooding quantity, the unlikely very fast destruction of biomembranous work, biological density is big, stain resistance is strong, power consumption is little, the big running cost of processing power is low, and floor space is little, is easy to maintenance management.
2, the present invention adopts the method stable effluent quality that the A/O biological contact oxidation process is disposed of sewage, and it is less to produce mud, can not produce the harm of sludge bulking, and microorganism colonization, demoulding are conveniently; Do not need mud to reflux.
3, utilize method of disposing of sewage of the present invention obvious to the organism treatment effect in the sewage, the average removal rate of COD is more than 70%, BOD
5Average removal rate more than 90%, to the NH in the sewage
3The water-quality guideline treatment effect of-N is obvious, and water outlet can reach the discharge index of country fully.
Description of drawings
Fig. 1 adopts the process flow sheet of the method that the A/O biological contact oxidation process disposes of sewage for the present invention;
Fig. 2 is the sectional structure synoptic diagram that the present invention adopts second pond in the method that the A/O biological contact oxidation process disposes of sewage.
Among the figure, 1, second pond; 11, lower chambers; 12, upper chamber; 13, second pond water outlet; 2, dividing plate one; 3, filtering chamber's outlet; 4, thrust-augmenting nozzle; 5, reflection retaining plate; 6, reflector.
Embodiment
Below by specific embodiment also in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail; But the present invention is not limited to these embodiment.
Embodiment 1
The water quality of the sewage of need handling is as shown in table 1, is that the sanitary sewage water collecting basin of 2.0m * 2.0m * 1.0m is through pre-treatment after 8 hours, through sewage pump (model: SF-10-1: power: 0.55KW) be driven in the hydrolytic tank with above-mentioned sewage from flowing into specification;
Fill up vinyon medium-soft ball float filler in the hydrolytic tank, carry out the cultivation of anaerobic sludge by intermittent mode, detailed process is to pour in the hydrolytic tank through the anaerobic sludge of 2 all left and right sides static cultivation, volume accounts for about 1/10 of hydrolytic tank cumulative volume, be full of hydrolytic tank with the artificial distribution, use roots blower (power 0.75kw then, inlet flow rate 1.09m3/min, rotating speed 1140r/mi n, 19.6KPa boosts) aeration is once, anaerobic sludge is evenly distributed in the hydrolytic tank, after leaving standstill after a while, between the semi soft packing surfaces externally and internally of hydrolytic tank and filler, all forms the back and closely knit microbial film.Utilization is 50g/m attached to being membranaceous biomass on the polyethylene medium-soft ball float filler
3Anerobe or anoxic bacteria to the sewage in the hydrolytic tank be hydrolyzed handle 6 hours after, overflow is to Aerobic Pond;
Being filled with in the Aerobic Pond and accounting for whole Aerobic Pond volume product space is 4/5 vinyon medium-soft ball float filler, and the active sludge of inoculation is joined in the Aerobic Pond, adds sewage and fills, and leaves standstill emptying about 24 hours; And then the active sludge of adding inoculation, utilize roots blower (power 0.75kw, inlet flow rate 1.09m3/min, rotating speed 1140r/min, 19.6KPa boosts) employing discontinuous aeration mode, every aeration 2 hours was interrupted 0.5 hour, under the aeration state, grew microbial film at the internal surface of vinyon medium-soft ball float filler.Utilization is 100g/m attached to being membranaceous biomass on the vinyon medium-soft ball float filler
3Aerobic bacteria the sewage in the Aerobic Pond is carried out after aeration handles 6 hours, overflow is to second pond;
As shown in Figure 2, this second pond 1 is provided with the dividing plate 1 that second pond 1 is separated into lower chambers 11 and upper chamber 12, in lower chambers 11, be provided with reflection retaining plate 5 and export 3 thrust-augmenting nozzles that communicate 4 with filtering chamber, thrust-augmenting nozzle 4 water outlet places are provided with to be fixed on the reflection retaining plate 5 and are cone shape reflector 6, and the top of reflector 6 faces thrust-augmenting nozzle 4 water outlets.Can go out to sputter all around when thrust-augmenting nozzle 4 flows out and falls on the reflector 6 through the water after hydrolysis and the aeration processing like this, thereby make the biological film formed active sludge that comes off can not be deposited in same place, but uniform deposition is in lower chambers 11 bottoms.Overflow sewage to the second pond 1 adds chlorine tablets through post precipitation at second pond water outlet 13, and sterilizing process adopts the mode of impacting chlorine tablets to carry out.It is as shown in table 1 that its water-quality guideline is detected in the sterilization back, can directly be discharged in the environment by the water after detecting, and whole process flow figure as shown in Figure 1.
Embodiment 2
Sanitary sewage pretreated time in water collecting basin is 10 hours, fills up mao bamboon fiber medium-soft ball float filler in the hydrolytic tank, and it is that the active sludge of self is cultivated in the sewage that anerobe or anoxic bacteria adopt, and the biomass of anerobe or anoxic bacteria is 80g/m
3Anerobe or anoxic bacteria are hydrolyzed to the sewage in the hydrolytic tank and handled 4 hours, being filled with in the Aerobic Pond and accounting for whole Aerobic Pond volume product space is 3/4 mao bamboon fiber medium-soft ball float filler, and it is that the active sludge of self is cultivated in the sewage that aerobic bacteria adopts, and the biomass of aerobic bacteria is 70g/m
3, aerobic bacteria carries out aeration to the sewage in the Aerobic Pond to be handled 10 hours, and other technical process repeats no more with embodiment 1.It is as shown in table 1 to detect its water-quality guideline, can directly be discharged in the environment by the water after detecting, and whole process flow figure as shown in Figure 1.
Embodiment 3
Sanitary sewage pretreated time in water collecting basin is 15 hours, fills up acrylic plastering medium-soft ball float filler in the hydrolytic tank, and anerobe or anoxic bacteria adopt training method among the embodiment 1, and the biomass of anerobe or anoxic bacteria is 100g/m
3Anerobe or anoxic bacteria are hydrolyzed to the sewage in the hydrolytic tank and handled 3 hours, being filled with in the Aerobic Pond and accounting for whole Aerobic Pond volume product space is 2/3 mao bamboon fiber medium-soft ball float filler, and it is that the active sludge of self is cultivated in the sewage that aerobic bacteria adopts, and the biomass of aerobic bacteria is 50g/m
3, aerobic bacteria carries out aeration to the sewage in the Aerobic Pond to be handled 12 hours, and other technical process repeats no more with embodiment 1.It is as shown in table 1 to detect its water-quality guideline, can directly be discharged in the environment by the water after detecting, and whole process flow figure as shown in Figure 1.
Table 1: the waste water quality and the embodiment of the invention 1～3 are handled the contrast of back water quality before handling:
As can be seen from Table 1: the water quality of utilizing sewage water treatment method of the present invention to handle meets national GB8978-1996 " integrated wastewater discharge standard " primary standard, and is obvious to the organism treatment effect in the sewage, and the average removal rate of COD is more than 70%, BOD
5Average removal rate more than 90%, to the NH in the sewage
3The water-quality guideline treatment effect of-N is obvious.
Specific embodiment described in the present invention only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although the present invention has been made detailed explanation and has quoted some specific embodiments as proof, to those skilled in the art, only otherwise leave that the spirit and scope of the present invention can be done various variations or correction is obvious.
Claims (7)
1. method that adopts the A/O biological contact oxidation process to dispose of sewage, this method may further comprise the steps:
A, pre-treatment: the sewage that will handle is driven in the hydrolytic tank through sump pump after flowing into certainly and passing through pre-treatment in the water collecting basin;
B, hydrolysis treatment: fill up semi soft packing in the hydrolytic tank, utilize attached to being membranaceous anerobe or anoxic bacteria on the semi soft packing sewage in the hydrolytic tank was hydrolyzed processing after 3～6 hours, overflow is to Aerobic Pond;
C, aeration are handled: be filled with semi soft packing in the Aerobic Pond, Aerobic Pond is carried out aeration, utilize attached to being membranaceous aerobic bacteria on the semi soft packing sewage in the Aerobic Pond was carried out the aeration processing after 6～12 hours, overflow is to second pond (1);
D, precipitation, sterilization: overflow directly is discharged in the environment to second pond (1) middle sewage process precipitation and sterilization, described second pond (1) is provided with the dividing plate one (2) that second pond (1) is separated into lower chambers (11) and upper chamber (12), the thrust-augmenting nozzle (4) that in lower chambers (11), is provided with reflection retaining plate (5) and communicates with filtering chamber's outlet (3), thrust-augmenting nozzle (4) water outlet place is provided with to be fixed on the reflection retaining plate (5) and is cone shape reflector (6), and the top of reflector (6) faces thrust-augmenting nozzle (4) water outlet.
2. the method that a kind of A/O of employing biological contact oxidation process according to claim 1 is disposed of sewage is characterized in that: the pretreated time in water collecting basin of the sewage described in the steps A is 8～15 hours.
3. the method that a kind of A/O of employing biological contact oxidation process according to claim 1 is disposed of sewage, the semi soft packing described in the step B are a kind of in plastics semi soft packing or the vegetable fibre semi soft packing.
4. the method for disposing of sewage according to claim 1 or the 3 described a kind of A/O of employing biological contact oxidation process, it is characterized in that: the biomass of anerobe described in the step B or anoxic bacteria biofilm is 50～100g/m
3
5. the method that a kind of A/O of employing biological contact oxidation process according to claim 1 is disposed of sewage, it is characterized in that: the semi soft packing of filling among the step C accounts for 2/3～4/5 of whole Aerobic Pond volume, described semi soft packing is a kind of in vinyon semi soft packing or the vegetable fibre semi soft packing, and the biomass of described aerobic bacteria biofilm is 50～100g/m
3
6. the method that a kind of according to claim 1 or 5 A/O of employing biological contact oxidation process is disposed of sewage is characterized in that: the aeration process described in the step C adopts the discontinuous aeration mode, and every aeration was interrupted 0.5 hour in 2 hours.
7. the method that a kind of A/O of employing biological contact oxidation process according to claim 1 is disposed of sewage, it is characterized in that: the sterilization described in the step D is carried out at the second pond water outlet, and sterilizing process adopts the mode of impacting chlorine tablets.
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| CN2008100631747A CN101327990B (en) | 2008-07-18 | 2008-07-18 | Method for processing sewerage by A/O biological contact oxidation process |
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| CN2008100631747A CN101327990B (en) | 2008-07-18 | 2008-07-18 | Method for processing sewerage by A/O biological contact oxidation process |
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| CN101327990B true CN101327990B (en) | 2011-01-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102701540A (en) * | 2012-06-28 | 2012-10-03 | 苏州科博思流体科技有限公司 | High-efficiency domestic sewage treatment device |
| CN102874977A (en) * | 2012-09-12 | 2013-01-16 | 杭州富铭环境科技有限公司 | Waste water treatment method |
| CN105859035A (en) * | 2016-05-12 | 2016-08-17 | 南京海益环保工程有限公司 | Reclaimed water reuse and treatment process |
| CN106698814A (en) * | 2016-12-01 | 2017-05-24 | 国佳环境科技湖北连锁有限公司 | Treatment method and treatment device for wastewater |
| CN111366699A (en) * | 2020-04-01 | 2020-07-03 | 福建省东海检测技术有限公司 | Microorganism activity dissolved oxygen tester based on biological contact oxidation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6312599B1 (en) * | 2000-06-01 | 2001-11-06 | John H. Reid | Method of using wastewater flow equalization basins for multiple biological treatments |
| CN1324771A (en) * | 2001-07-18 | 2001-12-05 | 徐祥圣 | Power-saving underground city sewage treatment technology |
| CN1396125A (en) * | 2001-07-12 | 2003-02-12 | 徐祥圣 | Energy-saving burying-under-ground process for treating sewage in urban area |
| CN1772655A (en) * | 2005-09-27 | 2006-05-17 | 中国矿业大学 | High efficiency nitrification process of biological sewage treatment |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6312599B1 (en) * | 2000-06-01 | 2001-11-06 | John H. Reid | Method of using wastewater flow equalization basins for multiple biological treatments |
| CN1396125A (en) * | 2001-07-12 | 2003-02-12 | 徐祥圣 | Energy-saving burying-under-ground process for treating sewage in urban area |
| CN1324771A (en) * | 2001-07-18 | 2001-12-05 | 徐祥圣 | Power-saving underground city sewage treatment technology |
| CN1772655A (en) * | 2005-09-27 | 2006-05-17 | 中国矿业大学 | High efficiency nitrification process of biological sewage treatment |
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