CN103508559B - Aerobic treatment method applied in antibiotic wastewater treatment - Google Patents

Aerobic treatment method applied in antibiotic wastewater treatment Download PDF

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CN103508559B
CN103508559B CN201310452913.2A CN201310452913A CN103508559B CN 103508559 B CN103508559 B CN 103508559B CN 201310452913 A CN201310452913 A CN 201310452913A CN 103508559 B CN103508559 B CN 103508559B
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CN103508559A (en
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姚武松
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PUCHENG CHIA TAI BIOCHEMISTRY CO Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses an aerobic treatment method applied in antibiotic wastewater treatment, and applied in a wastewater treatment A/0 biochemical system. The A/0 biochemical system comprises a pool A, a pool O, a reflowing device and a biological setting pond. A preposed efficient microorganism A/O denitrification system is established in an aerobic interior of the biochemical system; an aerobic hydrolysis pool (the pool A) and an aeration oxidization pool (the pool O) are built in a biochemical pool, and are filled with efficient microbial preparation; the optimal environment is created to continuously enlarge cultivation and domestication. The removal of ammonia nitrogen and total nitrogen is mainly implemented in a continuous flow treatment manner with the methods of strengthening the stirring of the pool A and the aeration of the pool O and controlling the reflowing of nitration liquid and the sludge return ratio, and most COD is simultaneously degraded, so that the purpose of degrading various pollutants is achieved; through the technology, the removal efficiency of various pollutants is more than 95%.

Description

A kind of Aerobic treatment method being applied to antibiotic waste water and administering
Technical field
The present invention relates to field of industrial waste water treatment, more particularly, relate to the Aerobic treatment method of a kind of antibiotics height ammonia nitrogen, high organic waste water.
Background technology
Antibiotic waste water is more unmanageable one in trade effluent.This waste component is complicated, organic concentration is high, solvability and colloidality solids concn high, pH value often changes, and temperature is higher, with color and smell, suspension content is high, easy generation foam, containing hard-degraded substance and have the toxicants such as inhibiting microbiotic, belongs to antibiotics used water difficult to degradate.Consider Ke Shengization≤0.3 of such waste water, namely B/C is than high, and biodegradability is strong, and the most energy-conservation effective treatment process adopts microbiological treatment technology exactly, i.e. the bioremediation of anaerobism+aerobic.
High density antibiotics organic waste water after coagulating sedimentation+acidication+EGSB anaerobic biological treatment, its contamination index BOD, COD, SS, NH 3-N concentration is still very high, BOD=1000-1500mg/l, COD=3000-4000mg/l, ammonia nitrogen=600-800mg/l, SS=400-500mg/l, can not meet emission request far away, also must carry out Aerobic biological process and A/O Wastewater Treated by Activated Sludge Process, by the decomposition of high-effective microorganism to organic pollutant, guarantee that dirty water pollutant can be degraded elimination further.
Traditional Aerobic biological process generally has the embrane methods such as mud method and MBR method, contact oxidation method such as traditional A/O method, SBR method, oxidation ditch process method, but because ammonia nitrogen is too high, nitration reaction and denitrification process are not thorough, ammonia nitrogen is caused to be difficult to degraded, simultaneously the vying each other of autotroph and heterotroph microorganism, survival of the fittest effect, make effective microorganism dominant microflora be difficult to control, effluent index is fluctuated, has had a strong impact on the normal operation of Sewage treatment systems.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of Aerobic treatment method being applied to antibiotic waste water and administering, and carries out the removal of ammonia nitrogen and total nitrogen, and degrade COD simultaneously in large quantities, reaches the object of each pollutant of degrading.
For solving the problems of the technologies described above, the present invention adopts following scheme to realize:
Be applied to the Aerobic treatment method that antibiotic waste water is administered, be applied to wastewater treatment A/O biochemical system, this A/O biochemical system comprises A pond, O pond, reflux and biogenic sediment pond, it is characterized in that, this treatment process comprises the following steps:
(1) concurrent oxidation and aquoiysis pond is set up: in A pond, add the high-efficiency microorganism preparation based on denitrifying bacterium, and ball type carrier is added in A pond, make denitrifying bacterium attached thereto, be suspended in pond, strengthen stirring intensity simultaneously, carry out cultivating and taming in anaerobic environment;
(2) aeration oxidation pool is set up: in O pond, add the high-efficiency microorganism preparation based on autotrophic type microorganism and heterotroph microorganism, and add Powdered Activated Carbon as carrier in O pond;
(3) first preparing pool is collected by anaerobic effluent with without the former water of anaerobic treatment, according to the quality of anaerobic treatment ability and effect, by the allotment of system flowback water within the scope of reasonable COD, ammonia nitrogen, denitrification denitrogenation is carried out in the A pond that deployed waste water enters A/O biochemical system;
(4) in A pond using useless Organic substance in water as carbon source, carry out high strength stirring, carry out anti-nitration reaction, NO3-N and NO2-N is converted into nitrogen under denitrifying bacteria effect;
(5) water outlet of A pond enters O pond, enough oxygen is provided by micropore gas explosion in O pond, DO is 3.0-5.0mg/l, maintain PH in 7.0-7.5 scope by adding alkali lye simultaneously, heterotrophic microorganism is that nutrition source is degraded to organic pollutant, autotrophic type microorganism carries out nitration reaction with organic pollutant, and 80% of O pond outlet water at tail end is back to A pond by reflux and carries out denitrification denitrogenation;
(6) nitrification liquid being back to A pond carries out denitrification under anoxic conditions, and NO3-N and NO2-N changes into nitrogen under denitrifying bacteria effect;
(7) water outlet of A/O system precipitates to biogenic sediment pond, the high-effective microorganism precipitated adds to A/O system by mud return line, microorganism that is just aging and that die enters sludge disposal system as excess sludge, supernatant liquor overflow penetration depth governing system simultaneously;
In the above-mentioned methods, for ensureing the dynamic stability balance of high-effective microorganism in O pond, returned sluge and O pond former water flooding quantity ratio is 1:1, and 5 ~ 6 days carry out spoil disposal, and SV30 is 30% ~ 50%.
Wherein, O pond wastewater temperature remains on 20 ~ 30 DEG C, and SVI is 100; A pond mixed liquid recycle ratio is 4:1, and biogenic sediment pond mud age is 5 ~ 6 days.
Wherein, described ball type carrier is ¢ 8cm in step (1), and carrier inside is acrylic fibers or sponge.
Wherein, the alkali lye dropping into O pond described in step (5) to be concentration be 30% NaOH.
Beneficial effect:
The present invention is by setting up the preposition A/O denitrification system of high-effective microorganism in the aerobic inside of biochemical system, concurrent oxidation and aquoiysis pond (A pond) and aeration oxidation pool (O pond) is set up at biochemistry pool, add high-efficiency microorganism preparation wherein, and create the continuous enlarged culturing of optimum environment and domestication.By the stirring of strengthening A pond, O pond aeration, control the means such as nitrification liquid backflow and return sludge ratio, run with Continuous Flow processing mode, mainly carry out the removal of ammonia nitrogen and total nitrogen, degrade COD simultaneously in large quantities, reach the object of each pollutant of degrading, by this technique, all kinds of contaminant removal efficiency is up to more than 95%.
Accompanying drawing explanation
Fig. 1 is in A/O biochemical system structural representation in the present invention.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.
Please refer to Fig. 1, be the A/O biochemical system of antibiotic waste water Aerobic treatment method application of the present invention, this system comprises A pond, O pond, reflux, biogenic sediment pond.
Antibiotic waste water Aerobic treatment method, is applied to wastewater treatment A/O biochemical system, and this A/O biochemical system comprises A pond, O pond, reflux and biogenic sediment pond, and this treatment process comprises the following steps:
(1) concurrent oxidation and aquoiysis pond is set up: in A pond, add the high-efficiency microorganism preparation based on denitrifying bacterium, and ball type carrier is added in A pond, make denitrifying bacterium attached thereto, be suspended in pond, strengthen stirring intensity simultaneously, carry out cultivating and taming in anaerobic environment, in this step, this carrier is diameter 8cm hollow ball, surrounding is bored a hole, material is polyethylene, the inside is full of for acrylic fibers or sponge, high-effective microorganism attachment within it, form microbial film, density reaches 0.95-0.98kg/L, be suspended in A pond, pass through mechanical stirring, there is short-cut denitrification in high-effective microorganism simultaneously, different from O pond gac, O pond absorbent charcoal carrier is a kind of Powdered wooden carbon, granularity is 0.1mm, solid molecule, density is 1.01-1.1kg/L, main raising microorganism flock degree of compactness, accelerate mud-water separation, strengthen high-effective microorganism settling velocity, reduce high-effective microorganism to run off, retain high-effective microorganism, suppress the possibility of thread fungus big area outburst simultaneously,
(2) aeration oxidation pool is set up: in O pond, add the high-efficiency microorganism preparation based on autotrophic type microorganism and heterotroph microorganism, and add Powdered Activated Carbon as carrier in O pond;
(3) first preparing pool is collected by anaerobic effluent with without the former water of anaerobic treatment, according to the quality of anaerobic treatment ability and effect, by (COD≤4000mg/l within the scope of system flowback water (i.e. aerobic system water outlet (water outlet of A/O process artifact precipitation)) allotment to reasonable COD, ammonia nitrogen, ammonia nitrogen≤500mg/l), object meets aerobic microbiological metabolic demand, be unlikely to that concentration is too high becomes toxicant, i.e. COD≤4000mg/l, ammonia nitrogen≤500mg/l), denitrification denitrogenation is carried out in the A pond that deployed waste water enters A/O biochemical system; Here, because of the limitation of highly effective aerobic microorganism, COD, ammonia nitrogen must control to be COD≤4000mg/l in certain scope, ammonia nitrogen≤500mg/l, if too high, must dilute, if too low, must C(BOD be met), the ratio of N, P is: 100:5:1;
(4) in A pond using useless Organic substance in water as carbon source, carry out high strength stirring, carry out anti-nitration reaction, NO3-N and NO2-N is converted into nitrogen under denitrifying bacteria effect;
(5) water outlet of A pond enters O pond, enough oxygen is provided by micropore gas explosion in O pond, DO is 3.0-5.0mg/l, maintain PH in 7.0-7.5 scope by adding alkali lye simultaneously, heterotrophic microorganism is that nutrition source is degraded to organic pollutant, autotrophic type microorganism carries out nitration reaction with organic pollutant, and O pond outlet water at tail end major part (general about 80%) is back to A pond by reflux and carries out denitrification denitrogenation;
(6) nitrification liquid being back to A pond carries out denitrification under anoxic conditions, and NO3-N and NO2-N changes into nitrogen under denitrifying bacteria effect;
(7) water outlet of A/O system precipitates to biogenic sediment pond, the high-effective microorganism precipitated adds to A/O system by mud return line, microorganism that is just aging and that die enters sludge disposal system as excess sludge, supernatant liquor overflow penetration depth governing system simultaneously;
In the above-mentioned methods, for ensureing the dynamic stability balance of high-effective microorganism in O pond, returned sluge and flooding quantity ratio are 1:1, and 5 ~ 6 days carry out spoil disposal, SV30 is 30% ~ 50%, and SV30 is sludge settling ratio (aerobic system technical indicator) here, i.e. volume ratio shared by sedimentation 30 minutes mud.
Core processing technology of the present invention is cultivation and the domestication of high-effective microorganism, inoculation efficient microbial strain, carry out cultivating and taming, Powdered Activated Carbon is added as carrier in the culturing process of O pond, this carrier object is for improving microorganism flock degree of compactness, accelerate mud-water separation, reduce microorganism to run off, suppress the possibility of thread fungus big area outburst simultaneously, completely different from A pond ball type carrier, A pond carrier for retaining microorganism, in A pond high strength stir under, flco is not broken up, and forms single independent short-cut denitrification simultaneously.
Cultivate the microorganism tamed it is characterized by:
1, the nontoxicity of high-effective microorganism own, no pathogenicity, can not cause secondary pollution.
2, remove the rate block of the equivalent pollutent in waste water than conventional microbiological, ability is strong.Because conventional microbiological is in high COD=4000mg/l, high ammonia nitrogen=500mg/l environment, its degraded pollutent substantially because of its concentration too high qualitative be toxicant, affect the existence of conventional microbiological, metabolism, even can cause the various situations such as sludge decomposition, Mud up-floating and sludge bulking, cannot run at all, whole system blackening is smelly, cause collapse, microorganism Large Scale Death, thrashing.
3, degradation of ammonia nitrogen ability is strong, and clearance Gao Keda more than 95%, the clearance of total nitrogen can reach 85%.
4, the mud of mud is long for age, and therefore excess sludge production is few, is 1/10 or less of conventional activated sludge.
5, sludge settling property is good, and tightness is high, good stability.
6, can select different technique according to different water quality, process choice is flexible, and equipment is simple, and hardware facility less investment, working cost is low, failure rate is low.
7, microorganism is disposable adds, without the need to adding after system debug completes.
8, anti impulsion load is high, can stand the impact of ammonia nitrogen in high density.
A/O system A pond (also crying concurrent oxidation and aquoiysis pond): biochemistry pool fore portion sets up concurrent oxidation and aquoiysis pond (A pond), add new and effective microbial preparation wherein, namely the high-efficiency strain based on denitrifying bacterium, by adjusting its living environment: add novel ball floating stuffing carrier in A pond, this ball type carrier is ¢ 8cm, inside is acrylic fibers or sponge, allow high-effective microorganism-------denitrifying bacterium of easily running off is attached thereto to be suspended in pond, strengthen stirring intensity simultaneously, carry out cultivating and taming in anaerobic environment, Degradation can be given full play to, flock is not caused again to break, disintegrate.High-efficiency strain denitrifying bacterium can be retained simultaneously, ensure that the stable of A section system.Play denitrifying bacteria and show different specific properties under various circumstances, utilize useless Organic substance in water to carry out denitrification, by NO as carbon source 2--N, NO 3--N changes into N 2remove from water.Make the larger molecular organics of difficult degradation be decomposed into micromolecular material by concurrent oxidation and aquoiysis effect simultaneously, improve biodegradability, be beneficial to the further degraded of follow-up CODcr;
A/O system O pond (being also aeration oxidation pool): set up aeration oxidation pool (O section) at biochemistry pool rear portion, adding new and effective microbial preparation and autotrophic bacteria and heterotrophic bacterium is wherein main high-effective microorganism, by adjustment high-effective microorganism living environment: the sufficiently long residence time (7d) (namely mud age of microorganism is 168h), take Powdered Activated Carbon as carrier, under the dissolved oxygen and abundant foodstuff (organism) of abundance, organic pollutant is degraded, there is not sludge bulking, under heterotroph microorganism and aerobic microbiological have the prerequisite of free oxygen inside O pond, using organic pollutant as nutrition source, organic pollutant is degraded, stable.High-effective microorganism---autotrophic type microorganism carries out nitrification, NH at this simultaneously 3be oxidized to nitrite, be reoxidised into nitrate, play high-effective microorganism and show different specific properties under various circumstances, complete nitrifying process, NH 3-N changes into NO 2--N, NO 3--N decomposing organic matter; CODcr is removed while nitrated.For the situation that ammonia nitrogen in waste water content is high, consider total nitrogen index, the nitrification liquid in oxygen pond of exposing to the sun and the mud pump reflux of second pond carry out denitrification to oxygen compatibility pool A pond;
In O pond, a large amount of high-effective microorganism (SV30=30-50%) is played a great role at this, degraded COD a large amount of under sufficient dissolved oxygen (DO=3.0-5.0 mg/l), and by nitrifier, nitrogenous substances is converted into nitrate nitrogen and nitrite nitrogen.The oxygen that this process need is a large amount of and basicity.So enough oxygen must be provided by micro-pore aeration in this workshop section) and maintain acid base equilibrium by adding liquid caustic soda such as NaOH, PH is maintained 7.0-7.5, and water outlet major part is back to A pond and carries out denitrification denitrogenation.
In O pond, temperature T maintains 20 ~ 30 degrees Celsius, SVI(sludge index, the proportion that 1g dewatered sludge accounts for)=100; In A pond, the ratio of backflow nitrification liquid and flooding quantity is 5:1; In biogenic sediment pond, mud remains on about 5 ~ 6 days age.
Process parameter control: O pond: DO(dissolved oxygen, the content of dirty water oxygen)=3.0-5.0mg/l, SV30(settling ratio, volume ratio shared by sedimentation 30 minutes mud)=30-50%, pH(soda acid) be 7.0-7.5, T(temperature)=20-30 DEG C, sludge reflux, reflux ratio (returned sluge and flooding quantity) 1:1, A pond: nitrification liquid refluxes, reflux ratio (nitrification liquid and flooding quantity) 4:1, second pond: excess sludge discharge: HRT (mud age) 5-6 days.
A/O system flowback device (being also nitrification liquid return-flow system): the outlet water at tail end in aeration oxidation pool and O pond is back in A pond, concurrent oxidation and aquoiysis pond by this reflux, and object is NO a large amount of in waste water 2--N, NO 3--N gets back in concurrent oxidation and aquoiysis pond and carries out denitrification process, NO 2--N, NO 3--N changes into N 2, thus remove the nitrogenous substances in waste water, reach the object of denitrogenation; Be back to the backflow nitrification liquid denitrification under anoxic conditions in A pond from O pond, nitrate and nitrite are converted into nitrogen and overflow into air denitrogenation under denitrifying bacteria effect, release a large amount of alkali.In denitrification process, carbon source sufficiently, i.e. organic carbon, guarantee that microorganism has enough nutrition sources, so anaerobic effluent must be introduced into A section, A is in anoxia stirring process simultaneously, also plays facultative hydrolytic action, improve waste water B/C ratio, produce a large amount of basicity, for the degraded of O section provides favourable conditions.Here B/C is biodegradability index, is not biodegradable or comparatively difficult for biological degradation when BOD/COD and B/C≤0.2, biodegradable during B/C=0.2-0.3, is readily biodegradable during B/C >=0.3.As a kind of optimal way, in A pond, the reflux ratio of nitrification liquid and flooding quantity is 5:1.
Biogenic sediment pond: the water outlet of A/O pond enters as biological settling tank, in this pond, carry out precipitating, concentrating at this containing the mixed solution of a large amount of high-effective microorganism from the mixed solution in O pond, simultaneously, dynamic stability in order to ensure high-effective microorganism in O pond balances, the microorganism precipitated adds to A/O system A section by mud return line, for guaranteeing that A/O system has enough high-effective microorganisms, returned sluge and flooding quantity must control ratio about 1:1, and regular (5-6d) spoil disposal, strict control SV30(settling ratio) within the scope of 40%-60%.Aging and unnecessary microorganism and residue excess sludge enter sludge disposal system, and supernatant liquor flow into next workshop section.
New antibiotic waste water aerobic treatment process of the present invention, owing to establishing complete biologic chain, so have the feature of mud age long (150 more than h can be reached), inoculate owing to adopting special high-effective microorganism, and the A/O system of carrying out cultivating and taming can make nitrifier and denitrifying bacteria form dominant bacteria in biosystem, thus ensure that more conventional A/O system has better, more thoroughly denitrification effect, by submersible agitating and suspension ball type carrier in A pond, create top condition, guarantee that high-effective microorganism denitrifying bacterium forms dominant bacteria, expose to the sun at the bottom of O pond is by micropore and control dissolved oxygen and powder activity high-area carbon and prevent the return sludge ratio of sludge loss and 1:1 from guaranteeing sludge quantity, create top condition, ensure that autotrophic type nitrobacteria and heterotroph protozoon, metazoan wheel animalcule is as thread fungus, campanularian, the running balance of the high-effective microorganisms such as wheel animalcule, each pollutant that can be degraded by microorganisms substantially all is removed, finally realize the clearance of each pollutant up to more than 95%, guarantee to reach national secondary discharge standard, directly can enter into municipal sewage plant, also deep treatment system can be carried out simultaneously, do other degree of depth chemical treatment of higher one-level.
Adopt high-effective microorganism A/O activated sludge process aerobic treatment process of the present invention to water outlet (COD≤4000mg/l after microbiotic Anaerobic wastewater treatment, An Dan≤500mg/l) process, ensure that antibiotic waste water is having a more comprehensive removal effect by aerobic process to pollutent again after anaerobic biological treatment, in Aerobic biological process workshop section, pollutent is effectively removed comprehensively, Chinese effluent reaches national secondary discharge standard and all kinds of contamination index is: BOD5≤60mg/l, CODcr≤300mg/l, An Dan ≤=50mg/l, SS≤100mg/l, Se Du≤80, pH=6.0-9.0.
These are only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (4)

1. be applied to the Aerobic treatment method that antibiotic waste water is administered, be applied to wastewater treatment A/O biochemical system, this A/O biochemical system comprises A pond, O pond, reflux and biogenic sediment pond, it is characterized in that, this treatment process comprises the following steps:
(1) concurrent oxidation and aquoiysis pond is set up: in A pond, add the high-efficiency microorganism preparation based on denitrifying bacterium, and ball type carrier is added in A pond, make denitrifying bacterium attached thereto, be suspended in pond, strengthen stirring intensity simultaneously, carry out cultivating and taming in anaerobic environment;
(2) aeration oxidation pool is set up: in O pond, add the high-efficiency microorganism preparation based on autotrophic type microorganism and heterotroph microorganism, and add Powdered Activated Carbon as carrier in O pond;
(3) first preparing pool is collected by anaerobic effluent with without the former water of anaerobic treatment, according to the quality of anaerobic treatment ability and effect, by the allotment of system flowback water within the scope of reasonable COD, ammonia nitrogen, denitrification denitrogenation is carried out in the A pond that deployed waste water enters A/O biochemical system;
(4) in A pond using useless Organic substance in water as carbon source, carry out high strength stirring, carry out anti-nitration reaction, NO3-N and NO2-N is converted into nitrogen under denitrifying bacteria effect;
(5) water outlet of A pond enters O pond, enough oxygen is provided by micro-pore aeration in O pond, DO is 3.0-5.0mg/L, maintain pH in 7.0-7.5 scope by adding alkali lye simultaneously, heterotrophic microorganism is that nutrition source is degraded to organic pollutant, autotrophic type microorganism carries out nitration reaction with organic pollutant, and 80% of O pond outlet water at tail end is back to A pond by reflux and carries out denitrification denitrogenation;
(6) nitrification liquid being back to A pond carries out denitrification under anoxic conditions, and NO3-N and NO2-N changes into nitrogen under denitrifying bacteria effect;
(7) water outlet of A/O system precipitates to biogenic sediment pond, the high-effective microorganism precipitated adds to the O pond of A/O system by mud return line, microorganism that is just aging and that die enters sludge disposal system as excess sludge, supernatant liquor overflow penetration depth governing system simultaneously;
In the above-mentioned methods, be the dynamic stability balance ensureing high-effective microorganism in O pond, returned sluge and the flooding quantity volume ratio entering the former water in O pond are 1:1, and 5-6 days carry out spoil disposal, and SV30 is 30%-50%.
2. the Aerobic treatment method being applied to antibiotic waste water and administering according to claim 1, it is characterized in that, O pond wastewater temperature remains on 20-30 DEG C, and SVI is 100; A pond mixed liquid recycle ratio is 4:1, and biogenic sediment pond mud age is 5-6 days.
3. a kind of Aerobic treatment method being applied to antibiotic waste water and administering according to claim 1, it is characterized in that, described in step (1), ball type carrier is ¢ 8cm, and carrier inside is acrylic fibers or sponge.
4. the Aerobic treatment method being applied to antibiotic waste water and administering according to claim 1, is characterized in that, the alkali lye dropping into O pond described in step (5) to be concentration be 30% NaOH, this concentration is mass ratio.
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CN108911132A (en) * 2018-07-02 2018-11-30 南京万德斯环保科技股份有限公司 Strengthen the method for biochemical reaction processing landfill leachate using microbial bacterial agent

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