CN106115939A - A kind of online bio-synergistic ammonia nitrogen removal method of sewage - Google Patents
A kind of online bio-synergistic ammonia nitrogen removal method of sewage Download PDFInfo
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- CN106115939A CN106115939A CN201610615819.8A CN201610615819A CN106115939A CN 106115939 A CN106115939 A CN 106115939A CN 201610615819 A CN201610615819 A CN 201610615819A CN 106115939 A CN106115939 A CN 106115939A
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- ammonia nitrogen
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
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Abstract
The present invention provides a kind of online bio-synergistic ammonia nitrogen removal method of sewage, including: sewage is carried out water analysis, determines the water quality characteristic factor；Optimum strain is prepared according to the described water quality characteristic factor；By optimum strain in-place activation and the domestication of configuration, determine waste water ratio simultaneously；The bacterial strain after in-place activation and domestication is dynamically added according to pretreating sewage water quality and quantity.Solve Industrial Waste Water Treatments ammonia nitrogen in prior art and be difficult to the technical problem of stably reaching standard, it is possible to achieve all the sewage ammonia nitrogen of biochemical treatment all can realize qualified discharge, reduce operating cost for enterprise, there is preferable environmental benefit simultaneously.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to the online bio-synergistic ammonia nitrogen removal side of a kind of sewage
Method.
Background technology
Bring along with improving constantly of environmental requirement, particularly ammonia nitrogen emission request improve the process to nitrogenous effluent day by day
Certain challenge, its traditional PROCESS FOR TREATMENT includes A/0, and the technique such as SBR, CASS, A2/0 is difficult to the efficient removal to ammonia nitrogen, special
The process ammonia nitrogen not being trade effluent is up to standard the most difficult, thus some of bio-synergistic technology is even online biological therewith
The birth of Synergistic technique, this technology mainly adds a certain amount of nitrifier in the process technique of ammonia nitrogen waste water, thus promotes
The concentration of nitrifier in its waste water, but owing to adaptability and the water quality relation of its strain cause biological in Industrial Waste Water Treatments increasing
Effect is difficult to the effect played stably, and the limitation of particularly conventional bio-synergistic technology makes ammonia nitrogen in trade effluent exceed standard
Problem is difficult to solve, and operating cost is higher, and enterprise is difficult to bear.
Summary of the invention
Present invention is primarily targeted at the defect overcoming above-mentioned prior art, it is provided that the online biological of a kind of sewage increases
Effect ammonia nitrogen removal method, is difficult to the technical problem of stably reaching standard, Ke Yishi solving Industrial Waste Water Treatments ammonia nitrogen in prior art
Existing the most all the sewage ammonia nitrogen of biochemical treatment all can realize qualified discharge, reduce operating cost for enterprise, there is preferable ring simultaneously
Border benefit.
The online bio-synergistic ammonia nitrogen removal method of a kind of sewage that the present invention provides, including:
Sewage is carried out water analysis, determines the water quality characteristic factor；Optimum strain is prepared according to the described water quality characteristic factor；
By optimum strain in-place activation and the domestication of configuration, determine waste water ratio simultaneously；According to pretreating sewage water quality water
Amount dynamically adds the bacterial strain after in-place activation and domestication.
Further, described sewage is carried out water analysis, determine the water quality characteristic factor, according to the described water quality characteristic factor
Preparation optimum strain, including:
At least one sewage is carried out water analysis, determines the water quality characteristic of major pollutants matter kind present in water quality
The factor, carries out flora according to the described water quality characteristic factor and compounds, screen the bacterial strain relevant to the described water quality characteristic factor, access not
With in the sewage of water quality, cultivate, according to the ammonia nitrogen removal effect that the sewage of described different quality is detected, obtain
Good bacterial strain.
Further, the described optimum strain in-place activation by configuration and domestication, determine waste water ratio, according to pre-place simultaneously
The reason sewage quality water yield dynamically adds the bacterial strain after in-place activation and domestication, including:
Carrying out in-place activation bacterial strain by sewage, processed sewage is the 10%-20% always activating water body；On-the-spot screening is tamed and dociled
Change the bacterial strain of ammonia nitrogen pollutant in elite decomposable asymmetric choice net waste water and by the online amplification specially good effect ammonia nitrogen bacterium cultivating this bacterial strain of domestication
Agent, will be added to described amplification specially good effect ammonia nitrogen microbial inoculum Air Exposure in pending sewage after predetermined concentration.
Further, described bacterial strain includes but not limited to capsula Rhodopseudomonas, yellowish-brown rhodospirillum, pseudomonas fluorescens
In (pro-teus vulgaris), Bacterium prodigiosum (Clostridium putrificum), nitrate bacteria or ite antibacterial
One or more.
Further, the described amplification specially good effect ammonia nitrogen microbial inoculum taming this bacterial strain by online cultivation includes:
The bacterial strain of ammonia nitrogen pollutant in decomposable asymmetric choice net waste water elite for scene screening domestication is linked at least one pending
Sewage in, cultivate；Simultaneously to the strains domestication cultivated, confirm that online each bacterial strain of domestication of cultivating is at efficient ammonia nitrogen oxygen
Change the ratio of microorganism species, cultivated the amplification specially good effect ammonia nitrogen microbial inoculum taming this bacterial strain online.
Further, the method for described cultivation includes:
Extemporaneous preparation cultivates the activation medium of described specially good effect ammonia nitrogen microbial inoculum, is placed in biological domestication reactor；By institute
State specially good effect ammonia nitrogen microbial inoculum, in 0.5～the ratio of 1%, be inoculated in described biological domestication reactor.
Further, the method for the activation medium that described extemporaneous preparation cultivates described specially good effect ammonia nitrogen microbial inoculum includes:
By 5～7.5kg NH4SO4；5～7kg NaCO3；0.2～0.5kg MgSO4；0.2～0.4kg K2HPO4；0.2
～0.4kg NaCl；400L sewage；400L clear water, adjusts ph7.8～8.9, is placed in biological domestication reactor.
Further, the method for described domestication includes:
To the strains cultivated, carry out denaturing gradient gel electrophoresis technique and be analyzed (denaturing gradient
Gel electrophoresis, DGGE), by fingerprint map analyzing, draw dominant bacteria in the sewage of different quality kind and
Ratio, according to DGGE result, confirms that online each bacterial strain of domestication of cultivating, in the ratio of efficient ammonia nitrogen oxidizing microorganisms flora, obtains
The online amplification specially good effect ammonia nitrogen microbial inoculum cultivating this bacterial strain of domestication.
Further, described pending by being added to after described amplification specially good effect ammonia nitrogen microbial inoculum Air Exposure to predetermined concentration
Sewage in, including:
Described amplification specially good effect ammonia nitrogen microbial inoculum is placed in aeration in the biological domestication reactor that temperature is 25 DEG C-35 DEG C cultivate；
When cultivation to microbial bacteria number in biological domestication reactor reaches 108～109Individual/ml and organized enzyme reach predetermined dense
When spending, described amplification specially good effect ammonia nitrogen microbial inoculum is added in aerobic system until reaching aerobic system ammonia nitrogen in the ratio set
The optimal number that oxidation bacteria pre-sets.
Further, the ratio that the mud of described amplification specially good effect ammonia nitrogen microbial inoculum and aerobic system adds is 0.02-0.06L bacterium
Liquid/kgMLSS.
Further, described amplification specially good effect ammonia nitrogen microbial inoculum Air Exposure to the preservation temperature of the bacterium solution of predetermined concentration 22
DEG C-28 DEG C, dissolved oxygen (DO) 2.0mg/L-4.0mg/L, PH is in the environment of 6-9.
The scheme that the present invention provides, by sewage is carried out water analysis, determines the water quality characteristic factor；According to described water quality
Characterization factor preparation optimum strain；By optimum strain in-place activation and the domestication of configuration, determine waste water ratio simultaneously；According to pre-place
The reason sewage quality water yield dynamically adds the bacterial strain after in-place activation and domestication.So that difficult Industrial Waste Water Treatments ammonia nitrogen is steady
Fixed up to standard, reduce the operating cost in sewage treatment project simultaneously.For high-concentration ammonia-nitrogen, intractable industry and all types of industries
The major significance of garden sewage, it is possible to achieve all the sewage ammonia nitrogen of biochemical treatment all can realize qualified discharge, reduces for enterprise
Operating cost, has preferable environmental benefit simultaneously.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention pair
Technical solution of the present invention is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative labor
The every other embodiment obtained under dynamic premise, broadly falls into the scope of protection of the invention.
The embodiment of the invention, a kind of online bio-synergistic ammonia nitrogen removal method of sewage, including:
Sewage is carried out water analysis, determines the water quality characteristic factor；Optimum strain is prepared according to the described water quality characteristic factor；
By optimum strain in-place activation and the domestication of configuration, determine waste water ratio simultaneously；Dynamically throw according to pretreating sewage water quality and quantity
Add the bacterial strain after in-place activation and domestication.
Further, described sewage is carried out water analysis, determine the water quality characteristic factor, according to the described water quality characteristic factor
Preparation optimum strain, including:
At least one sewage is carried out water analysis, determines the water quality characteristic of major pollutants matter kind present in water quality
The factor, carries out flora according to the described water quality characteristic factor and compounds, screen the bacterial strain relevant to the described water quality characteristic factor, access not
With in the sewage of water quality, cultivate, according to the ammonia nitrogen removal effect that the sewage of described different quality is detected, obtain
Good bacterial strain.
Wherein, the water quality characteristic factor refers to major pollutants matter kind present in its water quality, and its water quality characteristics factor can
In the way of by the linkage of mass spectrum-chromatograph and combine enterprise's raw materials for production and product type is determined, draw according to analyzing
Characterization factor determines optimal place to go bacterial strain, and tames device bacterial strain further by such waste water at the scene and guarantee that it adds bacterial strain
Adaptation ability.The polluters such as characterization factor includes: containing benezene, benzene class, aldehydes, ketone.
Further, the described optimum strain in-place activation by configuration and domestication, determine waste water ratio, according to pre-place simultaneously
The reason sewage quality water yield dynamically adds the bacterial strain after in-place activation and domestication, including:
Using a certain amount of sewage to carry out in-place activation bacterial strain, its activation process at least ensures that the ratio of its processed sewage
Between total 10-20% activating water body；On-the-spot screening is tamed the bacterial strain of ammonia nitrogen pollutant in elite decomposable asymmetric choice net waste water and leads to
Cross the online amplification specially good effect ammonia nitrogen microbial inoculum cultivated and tame this bacterial strain, by described amplification specially good effect ammonia nitrogen microbial inoculum Air Exposure to predetermined dense
To be added in pending sewage after degree.
By elite and cultivate domestication and amplify specially good effect ammonia nitrogen microbial inoculum Air Exposure by online and will add after predetermined concentration
In pending sewage, improve the concentration lotus of ammonium oxidation bacterium in Aeration tank, thus promote the stability of biochemical system, oneself
The removal ability of repair ability, impact resistance and ammonia nitrogen, to greatest extent ammonia nitrogen pollutant in Decomposition Wastewater.The skill of the application
Art scheme is for high-concentration ammonia-nitrogen, intractable industry and the major significance of all types of industries garden sewage.
Further, described bacterial strain includes but not limited to capsula Rhodopseudomonas, yellowish-brown rhodospirillum, pseudomonas fluorescens
In (pro-teus vulgaris), Bacterium prodigiosum (Clostridium putrificum), nitrate bacteria or ite antibacterial
One or more.
Preferably, described bacterial strain is compound strain, and it is by capsula Rhodopseudomonas (20～25%), yellowish-brown rhodospirillum (5～
10%), pseudomonas fluorescens (pro-teus vulgaris) (10～15%), Bacterium prodigiosum (Clostridium
Putrificum) (9～12%), nitrate bacteria (20～30%), the ratio composition of ite antibacterial (10～20%).
Further, the described amplification specially good effect ammonia nitrogen microbial inoculum taming this bacterial strain by online cultivation includes:
The bacterial strain of ammonia nitrogen pollutant in decomposable asymmetric choice net waste water elite for scene screening domestication is linked at least one pending
Sewage in, cultivate；Simultaneously to the strains domestication cultivated, confirm that online each bacterial strain of domestication of cultivating is at efficient ammonia nitrogen oxygen
Change the ratio of microorganism species, cultivated the amplification specially good effect ammonia nitrogen microbial inoculum taming this bacterial strain online.
Further, the method for described cultivation includes:
Extemporaneous preparation cultivates the activation medium of described specially good effect ammonia nitrogen microbial inoculum, is placed in biological domestication reactor；By institute
State specially good effect ammonia nitrogen microbial inoculum, in 0.5～the ratio of 1%, be inoculated in described biological domestication reactor.
Further, the method for the activation medium that described extemporaneous preparation cultivates described specially good effect ammonia nitrogen microbial inoculum includes:
By 5～7.5kg NH4SO4；5～7kg NaCO3；0.2～0.5kg MgSO4；0.2～0.4kg K2HPO4；0.2
～0.4kg NaCl；400L sewage；400L clear water, adjusts ph7.8～8.9, is placed in biological domestication reactor.
Further, the method for described domestication includes:
To the strains cultivated, carry out denaturing gradient gel electrophoresis technique and be analyzed (denaturing gradient
Gel electrophoresis, DGGE), by fingerprint map analyzing, draw dominant bacteria in the sewage of different quality kind and
Ratio, according to DGGE result, confirms that online each bacterial strain of domestication of cultivating, in the ratio of efficient ammonia nitrogen oxidizing microorganisms flora, obtains
The online amplification specially good effect ammonia nitrogen microbial inoculum cultivating this bacterial strain of domestication.
Further, described pending by being added to after described amplification specially good effect ammonia nitrogen microbial inoculum Air Exposure to predetermined concentration
Sewage in, including:
Described amplification specially good effect ammonia nitrogen microbial inoculum is placed in aeration in the biological domestication reactor that temperature is 25 DEG C-35 DEG C cultivate；
It is preferably 30 DEG C.
Wherein, the domestication environment of biological domestication reactor includes: temperature maintains between 30 DEG C-35 DEG C, PH at 7.5-8.5,
Dissolved oxygen DO is between 2-5mg/L, between NH3-N concentration 15-60mg/L.
When cultivation to microbial bacteria number in biological domestication reactor reaches 108～109Individual/ml and organized enzyme reach predetermined dense
When spending, described amplification specially good effect ammonia nitrogen microbial inoculum is added in aerobic system until reaching aerobic system ammonia nitrogen in the ratio set
The optimal number that oxidation bacteria pre-sets.Play the effect of potentiation.
It is interval that described predetermined concentration is preferably 0.13u/ml-0.25u/ml.
Further, the ratio that the mud of described amplification specially good effect ammonia nitrogen microbial inoculum and aerobic system adds is 0.02-0.06L bacterium
Liquid/kgMLSS.The bacterium solution dosage of its maximum is 0.06L bacterium solution/kg mud (MLSS).The optimum dosage of bacterium solution enters with system
Water ammonia nitrogen loading is correlated with, and when aerobic cell body ammonia nitrogen concentration is less than 15ppm concentration, its bacterium solution dosage is 0.02L/kg mud,
If cell body ammonia nitrogen concentration bacterium solution dosage when 15-45ppm is 0.035L/kg mud, when cell body ammonia nitrogen concentration is at 45-75ppm
Time bacterium solution dosage be 0.05L/kg mud, such as larger than during 75ppm, bacterium solution dosage is 0.06L/KG mud.
Further, described amplification specially good effect ammonia nitrogen microbial inoculum Air Exposure to the preservation temperature of the bacterium solution of predetermined concentration 22
DEG C-28 DEG C, dissolved oxygen DO2.0mg/L-4.0mg/L, PH is in the environment of 6-9.
Be preferably, the preservation temperature of described amplification specially good effect ammonia nitrogen microbial inoculum Air Exposure to the bacterium solution of predetermined concentration at 25 degree,
Dissolved oxygen DO can preserve 48 hours at 2.0mg/L-4.0mg/L, PH in the environment of 6-9, in different quality and process conditions
Lower by bio-synergistic technique optimal for design, it is ensured that its cultured bacterium solution added complete at 12 hours, so that it is guaranteed that its effect
Most preferably.
The scheme that the present invention provides, can be applicable to paper pulp papermaking and slurrying enterprise, dyeing textile industry, petroleum refining, essence
Highly difficult, the sewage of heavily contaminated such as refinement work, pharmaceutical industry, pesticide chemical, food processing, industrial park sewage, municipal wastewater
Process enterprise.By sewage is carried out water analysis, determine the water quality characteristic factor；Optimal according to the preparation of the described water quality characteristic factor
Bacterial strain；By optimum strain in-place activation and the domestication of configuration, determine waste water ratio simultaneously；Move according to pretreating sewage water quality and quantity
State adds the bacterial strain after in-place activation and domestication.So that difficult Industrial Waste Water Treatments ammonia nitrogen stably reaching standard, reduce simultaneously
Operating cost in sewage treatment project.Main for high-concentration ammonia-nitrogen, intractable industry and all types of industries garden sewage
Meaning, it is possible to achieve all the sewage ammonia nitrogen of biochemical treatment all can realize qualified discharge, reduces operating cost for enterprise, has simultaneously
There is preferable environmental benefit.
Difference and beneficial effect that the technical scheme of the application has relative to prior art are as shown in table 1:
Table 1
The application is by special to passing through at sewage plant scene after determining its optimum strain after waste water quality analysis
Being added to biochemical system after microbial acclimation device activation, its dosage is according to influent quality and load real-time change, finally
Make bio-chemical effluent ammonia nitrogen qualified discharge.
The foregoing is only embodiments of the invention, be not limited to the present invention, for those skilled in the art
For Yuan, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., within should be included in scope of the presently claimed invention.
Claims (10)
1. the online bio-synergistic ammonia nitrogen removal method of a sewage, it is characterised in that including:
Sewage is carried out water analysis, determines the water quality characteristic factor；Optimum strain is prepared according to the described water quality characteristic factor；
By optimum strain in-place activation and the domestication of configuration, determine waste water ratio simultaneously；Move according to pretreating sewage water quality and quantity
State adds the bacterial strain after in-place activation and domestication.
2. the method for claim 1, it is characterised in that described sewage is carried out water analysis, determine water quality characteristic because of
Son, prepares optimum strain according to the described water quality characteristic factor, including:
At least one sewage is carried out water analysis, determine present in water quality the water quality characteristic of major pollutants matter kind because of
Son, carries out flora according to the described water quality characteristic factor and compounds, screen the bacterial strain relevant to the described water quality characteristic factor, access difference
In the sewage of water quality, cultivate, according to the ammonia nitrogen removal effect that the sewage of described different quality is detected, obtain optimal
Bacterial strain.
3. the method for claim 1, it is characterised in that the described optimum strain in-place activation by configuration and domestication, with
Time determine waste water ratio, according to pretreating sewage water quality and quantity dynamically add in-place activation and domestication after bacterial strain, including:
Carrying out in-place activation bacterial strain by sewage, processed sewage is the 10%-20% always activating water body；On-the-spot screening domestication spy
The bacterial strain of ammonia nitrogen pollutant tame the amplification specially good effect ammonia nitrogen microbial inoculum of this bacterial strain by online cultivation in the decomposable asymmetric choice net waste water of choosing, by
Described amplification specially good effect ammonia nitrogen microbial inoculum Air Exposure will be added in pending sewage after predetermined concentration.
4. the method as described in one of claim 1-3, it is characterised in that described bacterial strain includes but not limited to the red false unit cell of pod membrane
Bacterium, yellowish-brown rhodospirillum, pseudomonas fluorescens (pro-teusvulgaris), Bacterium prodigiosum (Clostridium putrificum),
One or more in nitrate bacteria or ite antibacterial.
5. method as claimed in claim 3, it is characterised in that described by the online amplification specially good effect ammonia cultivating this bacterial strain of domestication
Nitrogen microbial inoculum includes:
The bacterial strain of ammonia nitrogen pollutant in decomposable asymmetric choice net waste water elite for scene screening domestication is linked at least one pending dirt
In water, cultivate；Simultaneously to the strains domestication cultivated, confirm that each bacterial strain of online cultivation domestication is micro-at efficient ammonium oxidation
The ratio of biological flora, is cultivated the amplification specially good effect ammonia nitrogen microbial inoculum taming this bacterial strain online.
6. method as claimed in claim 5, it is characterised in that the method for described cultivation includes:
Extemporaneous preparation cultivates the activation medium of described specially good effect ammonia nitrogen microbial inoculum, is placed in biological domestication reactor；By described spy
Effect ammonia nitrogen microbial inoculum, in 0.5～the ratio of 1%, is inoculated in described biological domestication reactor.
7. method as claimed in claim 6, it is characterised in that described extemporaneous preparation cultivates the activation of described specially good effect ammonia nitrogen microbial inoculum
The method of culture medium includes:
By 5～7.5kg NH4SO4；5～7kg NaCO3；0.2～0.5kg MgSO4；0.2～0.4kg K2HPO4；0.2～
0.4kg NaCl；400L sewage；400L clear water, adjusts ph7.8～8.9, is placed in biological domestication reactor.
8. method as claimed in claim 5, it is characterised in that the method for described domestication includes:
To the strains cultivated, carry out denaturing gradient gel electrophoresis technique and be analyzed (denaturing gradient gel
Electrophoresis, DGGE), by fingerprint map analyzing, draw kind and the ratio of dominant bacteria in the sewage of different quality
Example, according to DGGE result, confirms that online each bacterial strain of domestication of cultivating, in the ratio of efficient ammonia nitrogen oxidizing microorganisms flora, obtains
The amplification specially good effect ammonia nitrogen microbial inoculum taming this bacterial strain cultivated by line.
9. the method as described in one of claim 3-8, it is characterised in that described by described amplification specially good effect ammonia nitrogen microbial inoculum aeration
Reason will be added in pending sewage after predetermined concentration, including:
Described amplification specially good effect ammonia nitrogen microbial inoculum is placed in aeration in the biological domestication reactor that temperature is 25 DEG C-35 DEG C cultivate；
When cultivation to microbial bacteria number in biological domestication reactor reaches 108～109When individual/ml and organized enzyme reach predetermined concentration,
Described amplification specially good effect ammonia nitrogen microbial inoculum is added in aerobic system until reaching aerobic system ammonium oxidation in the ratio set
The optimal number that bacterium pre-sets.
10. the method as described in one of claim 1-9, it is characterised in that described amplification specially good effect ammonia nitrogen microbial inoculum Air Exposure arrives
The preservation temperature of the bacterium solution of predetermined concentration is at 22 DEG C-28 DEG C, and dissolved oxygen (DO) 2.0mg/L-4.0mg/L, PH are at the environment of 6-9
Under.
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| CN108640294A (en) * | 2018-05-24 | 2018-10-12 | 北京赛富威环境工程技术有限公司 | A kind of processing method of chemical industry or agricultural chemicals waste water biochemistry end |
| CN110066747A (en) * | 2019-04-04 | 2019-07-30 | 上海淳渊环境科技有限公司 | A kind of composite bacteria agent and water body total nitrogen processing method |
| CN111252902A (en) * | 2018-12-03 | 2020-06-09 | 南通醋酸化工股份有限公司 | Process method for treating dehydroacetic acid mixed wastewater and application |
| CN115636510A (en) * | 2022-10-26 | 2023-01-24 | 青岛万慧源环保科技有限公司 | Denitrification system suitable for low dissolved oxygen wastewater and debugging method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107176765A (en) * | 2017-07-12 | 2017-09-19 | 南通醋酸化工股份有限公司 | A kind of process for handling sorbic acid wastewater treatment |
| CN107176765B (en) * | 2017-07-12 | 2020-06-16 | 南通醋酸化工股份有限公司 | Process method for treating sorbic acid wastewater |
| CN108640294A (en) * | 2018-05-24 | 2018-10-12 | 北京赛富威环境工程技术有限公司 | A kind of processing method of chemical industry or agricultural chemicals waste water biochemistry end |
| CN111252902A (en) * | 2018-12-03 | 2020-06-09 | 南通醋酸化工股份有限公司 | Process method for treating dehydroacetic acid mixed wastewater and application |
| CN110066747A (en) * | 2019-04-04 | 2019-07-30 | 上海淳渊环境科技有限公司 | A kind of composite bacteria agent and water body total nitrogen processing method |
| CN115636510A (en) * | 2022-10-26 | 2023-01-24 | 青岛万慧源环保科技有限公司 | Denitrification system suitable for low dissolved oxygen wastewater and debugging method thereof |
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Application publication date: 20161116 |