CN108947139A - A kind of processing method of the high ammonia-nitrogen wastewater containing organic amine - Google Patents
A kind of processing method of the high ammonia-nitrogen wastewater containing organic amine Download PDFInfo
- Publication number
- CN108947139A CN108947139A CN201810914361.5A CN201810914361A CN108947139A CN 108947139 A CN108947139 A CN 108947139A CN 201810914361 A CN201810914361 A CN 201810914361A CN 108947139 A CN108947139 A CN 108947139A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- hydrogen peroxide
- organic amine
- nitrogen
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a kind of processing method of high ammonia-nitrogen wastewater containing organic amine, includes the following steps: to sample Step 1: organic amine high ammonia-nitrogen wastewater will be contained, detect ammonia nitrogen concentration therein；It is added in processing kettle Step 2: organic amine high ammonia-nitrogen wastewater will be contained, is warming up to 60-65 DEG C, hydrogen peroxide is added, stirs evenly, keep the temperature 0.5-3 h；Step 3: sampling analysis ammonia nitrogen and hydrogen peroxide content, compared with ammonia nitrogen concentration in step 1, ammonia nitrogen concentration reduces by 95% or more, after ammonia nitrogen concentration is up to standard in the step, and the concentration of the hydrogen peroxide is less than 1wt%；Step 4: carrying out subsequent processing subsequently into biochemical system, the biochemical system includes the anaerobic system and aerobic system set gradually after being down to room temperature.Treatment process of the present invention is hydrogen peroxide using oxidant, environmentally protective, will not introduce other pollutions, operation operating cost is low, and processing method is simple, and the good waste water of final process reaches discharge standard, can direct emission.
Description
Technical field
It is a kind of using novel oxidized-raw the invention discloses a kind of processing method of high ammonia-nitrogen wastewater containing organic amine
The method of change method processing high ammonia-nitrogen wastewater.
Background technique
Organic amine product is common chemical intermediate, in organic amine production process, especially Long carbon chain amide
In the production processes such as class, fatty amines, alcamines, unavoidably has and generated containing organic amine high ammonia-nitrogen wastewater, such waste water ammonia
Nitrogen content is higher, and up to 10000mg/L~100000mg/L, chemical property is stablized, and is difficult to using direct biological decomposition
Mode is handled, and is difficult waste water.Such waste water will lead to water eutrophication etc. due to containing high ammonia nitrogen, direct emission
Problem of environmental pollution, it is necessary to can be discharged by processing, for such industrial wastewater, technical staff carries out always processing mode
Grope and probe into.
Such waste water is handled at present and is mainly the following processing method: method of chemical treatment, physical treatment process and biology
Facture, specifically such as Fenton reagent method, electroosmose process, air stripping method, MAP (ammonium magnesium phosphate) chemical precipitation method, film divide
From method etc..Domestic is more typically to be handled using biochemical treatment mode and Fenton reagent method, is all difficult to reach effective purpose.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, adapt to reality and need, and provide a kind of high containing organic amine
The processing method of ammonia nitrogen waste water.
A kind of processing method of the high ammonia-nitrogen wastewater containing organic amine, includes the following steps:
Step 1: the sampling of organic amine high ammonia-nitrogen wastewater will be contained, ammonia nitrogen concentration therein is detected；
It is added in processing kettle Step 2: organic amine high ammonia-nitrogen wastewater will be contained, is warming up to 60-65 DEG C, hydrogen peroxide is added,
It stirs evenly, keeps the temperature 0.5-3h；
The mass ratio of ammonia-nitrogen content and hydrogen peroxide is 2:5 in the waste water；
Step 3: sampling analysis ammonia nitrogen and hydrogen peroxide content, compared with ammonia nitrogen concentration in step 1, ammonia nitrogen in the step
Concentration reduces by 95% or more, after ammonia nitrogen concentration is up to standard, and the concentration of the hydrogen peroxide is less than 1wt%；
If the not up to index value, continues to add according to the 1% of the content for the hydrogen peroxide being added in step 2, keep the temperature
It resamples after 0.5h and detects ammonia nitrogen concentration, until its is up to standard；If the concentration of hydrogen peroxide is more than or equal to 1wt% after up to standard, after
Sample presentation detects after continuation of insurance temperature 0.5h, until its concentration is up to standard；
Step 4: carrying out subsequent processing subsequently into biochemical system, the biochemical system includes successively setting after being down to room temperature
The anaerobic system and aerobic system set.
The anaerobic system is using activated sludge filling culture, and the water body part pH after water inlet is 8-9, and water temperature is
35-40 DEG C, the saturation degree of oxygen is not more than 1%, and residence time is 36-60 hours in anaerobic system.
In step 4, it is adjusted using pH value of the sulfuric acid to waste water.
The aerobic system is aerobic tank, and the aerobic tank is handled using aerobic microbiological, and pH is 6- in aerobic tank
8, it is handled using aerobic microbiological, is 18-30 hours in the residence time that aerobic tank summarizes.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is first pre-processed organic amine wastewater compared under temperate condition using hydrogen peroxide, reduces unhindered amina, will
Unhindered amina is converted to amine oxide, enters back into biochemical system and is handled；Treatment process is hydrogen peroxide, green ring using oxidant
It protects, other pollutions will not be introduced, operation operating cost is low, and processing method is simple, and the good waste water of final process reaches discharge mark
Quasi- (being less than 30mg/L according to national standard), can direct emission.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The method of the present invention is organically combined using method of chemical treatment and biological treatment, is realized novel oxidized-biochemical method, is passed through
Amine oxidation characteristic can be reduced ammonia nitrogen value in the case where total nitrogen is constant under alkaline condition using hydrogen peroxide by early period, be improved
Biodegradability, then waste water is thoroughly handled by biochemical treatment, reaching can discharge standard.The method is using hydrogen peroxide as oxidation
Agent, oxidizing temperature is more mild, and using oxidation-biochemical method, operating cost is low, easy to operate.Its mid-early stage use with dioxygen
Water is the novel oxidized method of oxidant, different from conventional Fenton reagent method.Fenton reagent method needs to utilize ferrous ion
(Fe2+) and hydrogen peroxide in acid condition chain reaction catalysis generate hydroxyl radical free radical, provide compared with Strong oxdiative ability, need simultaneously
Ferrous ion (Fe is provided2+) and hydrogen peroxide, and need to keep process object acidic environment, investment and operating cost are just significantly
It improves.
And central innovative approach is novel oxidized method pretreated waste water in the present invention: directlying adopt hydrogen peroxide as oxidation
Waste water is added in agent, rises to certain temperature, reaches biochemical treatment index after aoxidizing a period of time, walks into next step biochemical treatment
Suddenly, it is as follows to innovate processing dominant mechanism by the present invention:
Other will not be introduced after processing need to handle problem, environmentally protective！It is continued with after pretreatment into biochemical system, it can
Reach national emission standard.
The invention discloses a kind of processing methods of high ammonia-nitrogen wastewater containing organic amine, include the following steps:
Step 1: the sampling of organic amine high ammonia-nitrogen wastewater will be contained, ammonia nitrogen concentration therein is detected；
It is added in processing kettle Step 2: organic amine high ammonia-nitrogen wastewater will be contained, is warming up to 60-65 DEG C, hydrogen peroxide is added,
It stirs evenly, keeps the temperature 0.5-3h；
The mass ratio of ammonia-nitrogen content and hydrogen peroxide is 2:5 in the waste water；
Step 3: sampling analysis ammonia nitrogen and hydrogen peroxide content, compared with ammonia nitrogen concentration in step 1, ammonia nitrogen in the step
Concentration reduces by 95% or more, after ammonia nitrogen concentration is up to standard, and the concentration of the hydrogen peroxide is less than 1wt%；
If the not up to index value, continues to add according to the 1% of the content for the hydrogen peroxide being added in step 2, keep the temperature
It resamples after 0.5h and detects ammonia nitrogen concentration, until its is up to standard；If the concentration of hydrogen peroxide is more than or equal to 1wt% after up to standard, after
Sample presentation detects after continuation of insurance temperature 0.5h, until its concentration is up to standard；
Step 4: carrying out subsequent processing subsequently into biochemical system, the biochemical system includes successively setting after being down to room temperature
The anaerobic system and aerobic system set.
The anaerobic system is using activated sludge filling culture, and the water body part pH after water inlet is 8-9, and water temperature is
35-40 DEG C, the saturation degree of oxygen is not more than 1%, and residence time is 36-60 hours in anaerobic system.The processing residence time adopts
It is determined with time=dischargeable capacity/influent load, is 48h according to the design residence time.
In step 4, it is adjusted using pH value of the sulfuric acid to waste water.
The aerobic system is aerobic tank, and the aerobic tank is handled using aerobic microbiological, and pH is 6- in aerobic tank
8, it is handled using aerobic microbiological, is 18-30 hours in the residence time that aerobic tank summarizes.
In following embodiment, only to being related to elaborating at key index, each step is in the part of already explained mistake
Repeat no more.
Embodiment 1
The processing method of one of the present embodiment high ammonia-nitrogen wastewater containing organic amine, steps are as follows:
Step 1: the sampling of organic amine high ammonia-nitrogen wastewater will be contained, ammonia nitrogen concentration therein is detected, measuring ammonia nitrogen is
20030mg/L, pH=11.5；
Second step will contain organic amine high ammonia-nitrogen wastewater 4000kg and be added in processing kettle, and be warming up to 65 DEG C, 50wt% is added
Hydrogen peroxide 500kg, stirs evenly, and keeps the temperature 2h；
Step 3: sample detection ammonia nitrogen is 544mg/L, pH=9.6, hydrogen peroxide content 0.21wt%；
Step 4 is cooled to room temperature, handles one day using aerobic system two days later into anaerobic system；
Sewage after having handled is taken to be detected, ammonia nitrogen is down to 1.28mg/L, reaches discharge standard.
Embodiment 2
The processing method of one of the present embodiment high ammonia-nitrogen wastewater containing organic amine, steps are as follows:
Step 1: the sampling of organic amine high ammonia-nitrogen wastewater will be contained, ammonia nitrogen concentration therein is detected, measuring ammonia nitrogen is
30125mg/L, pH=12.1,
Second step will contain organic amine high ammonia-nitrogen wastewater 4000kg and be added in processing kettle, and be warming up to 60 DEG C, 50wt% is added
Hydrogen peroxide 600kg, stirs evenly, and keeps the temperature 2h；
Step 3: sample detection ammonia nitrogen is 1231mg/L, pH=10.1, hydrogen peroxide content 0.30wt%；
Step 4 is cooled to room temperature, handles one day using aerobic system two days later into anaerobic system；
Sewage after having handled is taken to be detected, ammonia nitrogen is down to 3.1mg/L, reaches discharge standard.
Embodiment 3
The processing method of one of the present embodiment high ammonia-nitrogen wastewater containing organic amine, steps are as follows:
Step 1: the sampling of organic amine high ammonia-nitrogen wastewater will be contained, ammonia nitrogen concentration therein is detected, measuring ammonia nitrogen is
25450mg/L, pH=11.7,
Second step will contain organic amine high ammonia-nitrogen wastewater 4000kg and be added in processing kettle, and be warming up to 65 DEG C, 50wt% is added
Hydrogen peroxide 500kg, stirs evenly, and keeps the temperature 2h；
Step 3: sample detection ammonia nitrogen is 762mg/L, pH=9.8, hydrogen peroxide content 0.30wt%；
Step 4 is cooled to room temperature, handles one day using aerobic system two days later into anaerobic system；
Sewage after having handled is taken to be detected, ammonia nitrogen is down to 1.67mg/L, reaches discharge standard.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of processing method of high ammonia-nitrogen wastewater containing organic amine, which comprises the steps of:
Step 1: the sampling of organic amine high ammonia-nitrogen wastewater will be contained, ammonia nitrogen concentration therein is detected；
It is added in processing kettle Step 2: organic amine high ammonia-nitrogen wastewater will be contained, is warming up to 60-65 DEG C, hydrogen peroxide, stirring is added
Uniformly, 0.5-3 h is kept the temperature；
The mass ratio of ammonia-nitrogen content and hydrogen peroxide is 2:5 in the waste water；
Step 3: sampling analysis ammonia nitrogen and hydrogen peroxide content, compared with ammonia nitrogen concentration in step 1, ammonia nitrogen concentration in the step
95% or more, after ammonia nitrogen concentration is up to standard is reduced, the concentration of the hydrogen peroxide is less than 1wt%；
If the not up to index value, continues to add according to the 1% of the content for the hydrogen peroxide being added in step 2, after keeping the temperature 0.5 h
It resamples and detects ammonia nitrogen concentration, until its is up to standard；If the concentration of hydrogen peroxide is more than or equal to 1wt% after up to standard, continue to keep the temperature
Sample presentation detects after 0.5 h, until its concentration is up to standard；
Step 4: carrying out subsequent processing subsequently into biochemical system, the biochemical system includes setting gradually after being down to room temperature
Anaerobic system and aerobic system.
2. a kind of processing method of high ammonia-nitrogen wastewater containing organic amine according to claim 1, it is characterised in that: described to detest
For oxygen system using activated sludge filling culture, the water body part pH after water inlet is 8-9, and water temperature is 35-40 DEG C, the saturation of oxygen
Degree is not more than 1%, and residence time is 36-60 hours in anaerobic system.
3. a kind of processing method of high ammonia-nitrogen wastewater containing organic amine according to claim 2, it is characterised in that: in step
In four, it is adjusted using pH value of the sulfuric acid to waste water.
4. one kind process for treating high ammonia nitrogen waste water containing organic amine according to claim 1, it is characterised in that: described aerobic
System is aerobic tank, and the aerobic tank is handled using aerobic microbiological, and pH is 6-8 in aerobic tank, using aerobic microbiological
It is handled, is 18-30 hours in the residence time that aerobic tank summarizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810914361.5A CN108947139A (en) | 2018-08-13 | 2018-08-13 | A kind of processing method of the high ammonia-nitrogen wastewater containing organic amine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810914361.5A CN108947139A (en) | 2018-08-13 | 2018-08-13 | A kind of processing method of the high ammonia-nitrogen wastewater containing organic amine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108947139A true CN108947139A (en) | 2018-12-07 |
Family
ID=64469362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810914361.5A Pending CN108947139A (en) | 2018-08-13 | 2018-08-13 | A kind of processing method of the high ammonia-nitrogen wastewater containing organic amine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108947139A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110835154A (en) * | 2019-12-16 | 2020-02-25 | 天合光能股份有限公司 | Ammonia water and hydrogen peroxide wastewater treatment device and method |
| CN110902963A (en) * | 2019-12-10 | 2020-03-24 | 九江天赐高新材料有限公司 | Treatment method of alkali-soluble polymer-containing wastewater |
| CN111875782A (en) * | 2020-06-17 | 2020-11-03 | 中国林科院林产化工研究所南京科技开发有限公司 | Method for preparing Mannich base curing agent by recycling amine epoxy curing agent production wastewater |
| CN114291920A (en) * | 2021-11-26 | 2022-04-08 | 岭澳核电有限公司 | Method for treating hydrazine-containing waste liquid of nuclear power station |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0126394B1 (en) * | 1983-05-13 | 1987-10-28 | Phillips Petroleum Company | Enzymatic removal of aromatic hydroxy compounds and aromatic amines from waste waters |
| JPH10235392A (en) * | 1997-02-28 | 1998-09-08 | Mitsubishi Heavy Ind Ltd | Treatment of wastewater containing hydrazine and ethanolamine |
| CN102452762A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Method for treating wastewater of caprolactam production |
| CN103253831A (en) * | 2013-05-09 | 2013-08-21 | 中国矿业大学(北京) | Heterogeneous catalysis Fenton reagent oxidation fluidized bed-anaerobic biological fluidized bed coking wastewater deep treatment system |
| CN104098228A (en) * | 2014-07-22 | 2014-10-15 | 中国矿业大学 | Organic amine wastewater treatment method |
| CN104773787A (en) * | 2015-03-24 | 2015-07-15 | 大连理工齐旺达化工科技有限公司 | Method for reducing chemical oxygen demand of zeolite molecular sieve production wastewater |
-
2018
- 2018-08-13 CN CN201810914361.5A patent/CN108947139A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0126394B1 (en) * | 1983-05-13 | 1987-10-28 | Phillips Petroleum Company | Enzymatic removal of aromatic hydroxy compounds and aromatic amines from waste waters |
| JPH10235392A (en) * | 1997-02-28 | 1998-09-08 | Mitsubishi Heavy Ind Ltd | Treatment of wastewater containing hydrazine and ethanolamine |
| CN102452762A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Method for treating wastewater of caprolactam production |
| CN103253831A (en) * | 2013-05-09 | 2013-08-21 | 中国矿业大学(北京) | Heterogeneous catalysis Fenton reagent oxidation fluidized bed-anaerobic biological fluidized bed coking wastewater deep treatment system |
| CN104098228A (en) * | 2014-07-22 | 2014-10-15 | 中国矿业大学 | Organic amine wastewater treatment method |
| CN104773787A (en) * | 2015-03-24 | 2015-07-15 | 大连理工齐旺达化工科技有限公司 | Method for reducing chemical oxygen demand of zeolite molecular sieve production wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 闫秀颖等: ""氧化法去除废淡盐水中苯胺的研究"", 《长春工业大学学报自然科学版》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902963A (en) * | 2019-12-10 | 2020-03-24 | 九江天赐高新材料有限公司 | Treatment method of alkali-soluble polymer-containing wastewater |
| CN110835154A (en) * | 2019-12-16 | 2020-02-25 | 天合光能股份有限公司 | Ammonia water and hydrogen peroxide wastewater treatment device and method |
| CN111875782A (en) * | 2020-06-17 | 2020-11-03 | 中国林科院林产化工研究所南京科技开发有限公司 | Method for preparing Mannich base curing agent by recycling amine epoxy curing agent production wastewater |
| CN111875782B (en) * | 2020-06-17 | 2023-12-26 | 中国林科院林产化工研究所南京科技开发有限公司 | Method for preparing Mannich base curing agent by recycling amine epoxy curing agent production wastewater |
| CN114291920A (en) * | 2021-11-26 | 2022-04-08 | 岭澳核电有限公司 | Method for treating hydrazine-containing waste liquid of nuclear power station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gao et al. | Simultaneous nitrate and dissolved organic matter removal from wastewater treatment plant effluent in a solid-phase denitrification biofilm reactor | |
| Zhang et al. | Efficient step-feed partial nitrification, simultaneous Anammox and denitrification (SPNAD) equipped with real-time control parameters treating raw mature landfill leachate | |
| CN108947139A (en) | A kind of processing method of the high ammonia-nitrogen wastewater containing organic amine | |
| Hongwei et al. | Nitrite accumulation during the denitrification process in SBR for the treatment of pre-treated landfill leachate | |
| Yang et al. | Simultaneous in-situ sludge reduction and nutrient removal in an A2MO-M system: Performances, mechanisms, and modeling with an extended ASM2d model | |
| He et al. | Metal oxyanion removal from wastewater using manganese-oxidizing aerobic granular sludge | |
| CN110642474A (en) | anaerobic-AO-SACR combined type high ammonia nitrogen sewage deep denitrification system and process | |
| Wu et al. | Rapid start-up and stable maintenance of partial nitrification–anaerobic ammonium oxidation treatment of landfill leachate at low temperatures | |
| CN107840550B (en) | Method for treating garbage leachate | |
| Chen et al. | The benefits of autotrophic nitrogen removal from high concentration of urea wastewater through a process of urea hydrolysis and partial nitritation in sequencing batch reactor | |
| Dobbeleers et al. | Biological nutrient removal from slaughterhouse wastewater via nitritation/denitritation using granular sludge: an onsite pilot demonstration | |
| CN106745734B (en) | Method for analyzing nitrous oxide discharge rate in nitrification and denitrification processes of single-stage biological denitrification system | |
| CN102674621B (en) | Method for treating high-concentration morpholine wastewater | |
| Sun et al. | A quantified nitrogen metabolic network by reaction kinetics and mathematical model in a single-stage microaerobic system treating low COD/TN wastewater | |
| Zheng et al. | Bio-reduction mechanism of V (V) by thermophilic hydrogen-producing bacteria under acidic conditions | |
| Zhang et al. | Effects of Al3+ on the microbial community, metabolic pathways, and morphological analysis of activated sludge | |
| CN107840444B (en) | Treatment device for garbage leachate | |
| CN107055963B (en) | Efficient and low-consumption advanced treatment device and treatment method for landfill leachate | |
| CN116730486B (en) | Anaerobic ammonia oxidizing bacteria proliferation agent | |
| CN107814466A (en) | A kind of DPT production wastewater treatments technique | |
| Qu et al. | Understanding the slight inhibition of high As (III) stress on nitritation process: Insights from arsenic speciation and microbial community analyses | |
| CN1363525A (en) | Process for bio-denitrifying sewage | |
| You et al. | Effects of heavy metals on the specific ammonia and nitrate uptake rates in activated sludge | |
| CN102101740A (en) | Treatment method of high-concentration organic wastewater in electronic industry | |
| Wang et al. | Treatment of domestic wastewater in step-feeding anoxic/oxic activated sludge–biofilm system at low temperature: Performance, removal characteristics, and community |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |