CN104591510A - Treatment process of nonferrous metallurgic ammonia-containing wastewater - Google Patents
Treatment process of nonferrous metallurgic ammonia-containing wastewater Download PDFInfo
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
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- 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
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- 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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/106—Carbonaceous materials
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- 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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/107—Inorganic materials, e.g. sand, silicates
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- 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
- C02F3/28—Anaerobic digestion processes
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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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Abstract
The invention discloses a treatment process of nonferrous metallurgic ammonia-containing wastewater. According to the treatment process, COD is removed by use of an A/O process, and then the effluent simultaneously goes through nitration and anaerobic ammonia oxidation reactions by use of an anaerobic ammonia oxidation reactor, so that most ammonia nitrogen and total nitrogen can be removed; after aerobic advanced treatment is performed on the effluent of the anaerobic ammonia oxidation reactor, the effluent is further denitrified by reduction through a zero-valent iron process, and then the obtained wastewater can be directly discharged up to the standards. The treatment process is characterized in that the A/O process is combined with the anaerobic ammonia oxidation and the aerobic treatment to reduce the ammonia nitrogen content of the wastewater to 5mg/L, then the nitrate total nitrogen is further reduced by use of the zero-valent iron process to realize denitrification, and finally, the total nitrogen content of the obtained wastewater is lower than 15mg/L. The process is short in process cycle, high in total nitrogen removal efficiency and high in impact resistance; in addition, reflux treatment is not required while the energy source is saved and the cost is reduced; less sludge is generated, and the treated wastewater meets the national first-class integrated wastewater discharge standards.
Description
Technical field
The present invention relates to nonferrous metallurgy Sewage advanced treatment field, particularly relate to a kind for the treatment of process of nonferrous metallurgy ammonia-containing water.
Background technology
Ammonia-containing water is extensively present in daily life and industry-by-industry, and in recent years, along with country is to the attention of the organic contamination such as nitrogen, phosphorus, the denitride technology of various ammonia-containing water also becomes study hotspot.With regard to ammonia-containing water denitrogenation, qualified discharge, the ammonia-containing water process of different concns heterogeneity should adopt different technique respectively.
Patent 200810229587.8 discloses a kind of ammonia distillation process, this technique mainly utilizes stripping ammonia still process principle to be carried out in an ammonia still by volatilization ammonia still-process Sum decomposition Stagnant ammonium still-process, final realization is containing the denitrogenation of ammonia coking chemical waste water, but the ammonia-containing water that this technique denitrogenation obtains can not direct qualified discharge, also need further biochemical treatment, and this technology has certain limitation, not fine for the ammonia nitrogen waste water denitrification effect that concentration is not high, want abundant denitrogenation need add a large amount of alkaline reagentss in addition, require high to reaction conditions, meanwhile also there is energy consumption higher, easily cause the shortcoming of secondary pollution.
Patent 201310123223.2 discloses a kind of high slat-containing wastewater biological denitrificaion treatment unit and method thereof, the method with the existing active sludge of saltworks for bacterium source carry out cultivation domestication after, anaerobism-Using Hybrid Biofilm Reactor is adopted to carry out denitrogenation processing to waste water, thus set up biological denitrification system and realize the effective denitrogenation of high-salt wastewater, wider salinity scope can be adapted to from adopting mud, this explained hereafter cost is low, cycle is short, nitration denitrification efficiency is high, can effective elimination ammonia nitrogen, but this technique is only applicable to the ammonia-containing water denitrogenation processing of lower concentration, ammonia-containing water for high density need carry out Macrodilution in advance, cause waste water output large, cost improves, suitability is poor.
Except the above, research for wastewater denitrification process in prior art is more, include but not limited to above two kinds of high-concentration ammonia nitrogenous wastewaters, but principal concern still concentrates on the denitrogenation of waste water in the higher or lower situation of nitrogen content, research particularly for the ammonia-containing water of intermediate concentration is less, also not effective means record more at present, especially for the treatment research of the intermediate concentration produced in colored metallurgical industrial process (500-2000mg/L) ammonia-containing water.
Therefore, contriver sums up forefathers' experience, develops a kind of comprehensive processing technique that effectively can process intermediate concentration nonferrous metallurgy ammonia-containing water targetedly through a large amount of scientific experiments.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind for the treatment of process of nonferrous metallurgy ammonia-containing water, this process makes full use biological treatment cost is low, the simple feature of operating process, A/O technique is combined after ammonia-nitrogen content is down to 5mg/L with anaerobic ammonia oxidation reactor, aerobic treatment, nitrate total nitrogen thus realize denitrogenation is reduced further again by Zero-valent Iron technique, the waste water total nitrogen content of final acquisition, can directly safety compliance discharge lower than 15mg/L.
The present invention by the following technical solutions
:
A kind for the treatment of process of nonferrous metallurgy ammonia-containing water, described technology utilization A/O technique removes COD, the reaction of nitrated and Anammox is there is simultaneously most ammonia-nitrogen and total nitrogen is removed in water outlet through anaerobic ammonia oxidation reactor, described anaerobic ammonia oxidation reactor water outlet enters Zero-valent Iron technique and reduces denitrogenation further after aerobic treatment, and the waste water of acquisition can direct qualified discharge.
Described A/O technique comprises anaerobic pond and Aerobic Pond successively, first described waste water enter anaerobic pond after pretreatment, larger molecular organics is degraded to after small organic molecule improves biochemical and enters Aerobic Pond, after organism is carried out biological degradation, flow into anaerobic ammonia oxidation reactor.
Ammonium oxidation is become nitroso-group nitrogen by the water reuse ammonia oxidation bacteria entering anaerobic ammonia oxidation reactor, and the nitroso-group nitrogen of generation reacts with ammonia nitrogen and generates nitrogen under the effect of anaerobic ammonia oxidizing bacteria, and described anaerobic ammonia oxidation effluent enters aerobic treatment.
In described anaerobic ammonia oxidation reactor treating processes, control water inlet BOD for being less than 50mg/L preferably by preposition A/O process, preferably dissolved oxygen content remains between 0.1-0.5mg/L, and preferably hydraulic detention time is 10-30h.
Through the waste water NH that described anaerobic ammonia oxidation reactor process obtains
3-N content is lower than 100mg/L, and total nitrogen content is lower than 150 mg/L.
Described aerobic treatment adopts biofilm reactor, and Anammox reduces the waste water after ammonia nitrogen concentration and flows into biofilm reactor, and realized the deep removal of ammonia nitrogen by the microorganism be attached on filler, the ammonia nitrogen in waste water content obtained is lower than 5mg/L.
The preferred BAF of described biofilm reactor, described aerating biological filter pool filler is preferably the one in haydite, coke, quartz sand and gac.
Described Zero-valent Iron technique adopts copper-iron alloy fixed bed journey, utilizes Zero-valent Iron as reductive agent, and by the waste water nitrate total nitrogen reduction denitrogenation after deep removal, the waste water total nitrogen content obtained is lower than 15mg/L.
Described Zero-valent Iron reductive agent be preferably iron filings or plane iron spend in one or both.
Described nonferrous metallurgy ammonia-containing water ammonia-nitrogen content is 500-2000mg/L.
compared with prior art, the present invention has following technique effect:
1, a kind for the treatment of process of nonferrous metallurgy ammonia-containing water is provided, particularly for the New Process for Treatment of intermediate concentration (500-2000mg/L) nonferrous metallurgy ammonia-containing water;
2, the present invention fully utilizes biological treatment and combines with anaerobic ammonia oxidation reactor and achieves synchronous nitration and denitrification; most ammonia-nitrogen and total nitrogen are removed laggard row aerobic treatment; ammonia-nitrogen content can be down to 5mg/L; treatment effect is good; save cost, the waste water total nitrogen content after Zero-valent Iron reduction treatment is lower than 15mg/L;
3, not only process cycle short total nitrogen removal efficiency is high for present invention process, strong shock resistance, and it is few to produce sludge quantity, without the need to reflow treatment, reduces costs, finally realizes discharged wastewater met the national standard.
figure of description
Fig. 1 is nonferrous metallurgy ammonia-containing water processing technological flow figure of the present invention.
The present invention is described in more detail below, but following example is only simple and easy example of the present invention, and do not represent or limit the scope of the present invention, protection scope of the present invention is as the criterion with claims.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with drawings and Examples:
As shown in Figure 1, a kind for the treatment of process of nonferrous metallurgy ammonia-containing water, described technology utilization A/O technique removes COD, the reaction of nitrated and Anammox is there is simultaneously most ammonia-nitrogen and total nitrogen is removed in water outlet through anaerobic ammonia oxidation reactor, described anaerobic ammonia oxidation reactor water outlet enters Zero-valent Iron technique and reduces denitrogenation further after aerobic advanced treatment, and the waste water of acquisition can direct qualified discharge.
Wherein, A/O optimal process sets gradually anaerobic pond and Aerobic Pond, first waste water enter anaerobic pond after pretreatment, is degraded to by larger molecular organics after small organic molecule improves biochemical and enters Aerobic Pond, flow into anaerobic ammonia oxidation reactor after organism is carried out biological degradation.
Ammonium oxidation is become nitroso-group nitrogen by the water reuse ammonia oxidation bacteria entering anaerobic ammonia oxidation reactor, the nitroso-group nitrogen generated reacts with ammonia nitrogen and generates nitrogen under the effect of anaerobic ammonia oxidizing bacteria, described anaerobic ammonia oxidation effluent enters aerobic treatment, and concrete reaction equation is as follows:
Nitrosification 2NH
4 ++ 3O
2→ 2NO
2 -+ 2H
2o+4H
+;
Anammox 3NO
2 -+ 2NH
3-N → 3N
2↑+NO
3 -+ 3H
2o;
In anaerobic ammonia oxidation reactor treating processes, preferably by preposition A/O process, water inlet BOD is controlled as being less than 50mg/L, preferably dissolved oxygen content remains between 0.1-0.5mg/L, and preferably hydraulic detention time is 10-30h, through the waste water NH that anaerobic ammonia oxidation reactor process obtains
3-N content is lower than 100mg/L, and total nitrogen content is lower than 150 mg/L.
Aerobic treatment preferably adopts biofilm reactor, and Anammox reduces the waste water after ammonia nitrogen concentration and flows into biofilm reactor, and realized the deep removal of ammonia nitrogen by the microorganism be attached on filler, the ammonia nitrogen in waste water content obtained is lower than 5mg/L.
The preferred BAF of biofilm reactor, aerating biological filter pool filler is preferably the one in haydite, coke, quartz sand and gac.
Zero-valent Iron technique adopts copper-iron alloy fixed bed journey, and control the addition of reductive agent Zero-valent Iron, make above-mentioned waste water carry out the reduction of nitrate total nitrogen thus denitrogenation, the waste water total nitrogen content obtained is lower than 15mg/L, and reaction equation is as follows:
5Fe+2NO
3 -+6H
2O→5Fe
2++N
2↑+12OH
-；
Wherein, Zero-valent Iron reductive agent be preferably iron filings or plane iron spend in one or both, this processing method is applicable to the nonferrous metallurgy ammonia-containing water that ammonia-nitrogen content is 500-2000mg/L
embodiment 1
Get nonferrous metallurgy ammonia-containing water, ammonia-nitrogen content is 500mg/L, enter anaerobic pond after pretreatment and larger molecular organics is degraded to small organic molecule, water outlet enters Aerobic Pond and carries out biological degradation, controlling water outlet BOD is 40mg/L, anaerobic ammonia oxidation reactor is pumped into by lift pump, now, keep DO=0.1mg/L, be nitroso-group nitrogen by the Ammonia Nitrification in waste water under the effect of ammonia oxidation bacteria, pass through the effect of anaerobic ammonia oxidizing bacteria again by nitroso-group nitrogen and ammonia nitrogen generation anti-nitration reaction, hydraulic detention time keeps 10 hours, nitrogen directly discharges, ammonia nitrogen in waste water content reduces to 80mg/L, total nitrogen content enters BAF after reducing to 120mg/L, microorganic adhesion forms microbial film on haydite, utilize microbial film by water outlet after further for ammonia-containing water deep removal ammonia nitrogen, ammonia-nitrogen content reduces to 5mg/L, add in copper-iron alloy fixed bed journey iron filings or plane iron spend in one or both as reductive agent, the nitrate total nitrogen of aerobic treatment water outlet is reduced to nitrogen, the waste water total nitrogen content finally obtained is lower than 15mg/L.
embodiment 2
Get nonferrous metallurgy ammonia-containing water, ammonia-nitrogen content is 1000mg/L, enter anaerobic pond after pretreatment and larger molecular organics is degraded to small organic molecule, water outlet enters Aerobic Pond and carries out biological degradation, controlling water outlet BOD is 30mg/L, anaerobic ammonia oxidation reactor is pumped into by lift pump, now, keep DO=0.3mg/L, be nitroso-group nitrogen by the Ammonia Nitrification in waste water under the effect of ammonia oxidation bacteria, pass through the effect of anaerobic ammonia oxidizing bacteria again by nitroso-group nitrogen and ammonia nitrogen generation anti-nitration reaction, hydraulic detention time keeps 15 hours, nitrogen directly discharges, ammonia nitrogen in waste water content reduces to 90mg/L, total nitrogen content enters BAF after reducing to 130mg/L, microorganic adhesion forms microbial film on haydite, utilize microbial film by water outlet after further for ammonia-containing water deep removal ammonia nitrogen, ammonia-nitrogen content reduces to 5mg/L, add in copper-iron alloy fixed bed journey iron filings or plane iron spend in one or both as reductive agent, the nitrate total nitrogen of aerobic treatment water outlet is reduced to nitrogen, the waste water total nitrogen content finally obtained is lower than 15mg/L.
embodiment 3
Get nonferrous metallurgy ammonia-containing water, ammonia-nitrogen content is 1500mg/L, enter anaerobic pond after pretreatment and larger molecular organics is degraded to small organic molecule, water outlet enters Aerobic Pond and carries out biological degradation, controlling water outlet BOD is 45mg/L, anaerobic ammonia oxidation reactor is pumped into by lift pump, now, keep DO=0.4mg/L, be nitroso-group nitrogen by the Ammonia Nitrification in waste water under the effect of ammonia oxidation bacteria, pass through the effect of anaerobic ammonia oxidizing bacteria again by nitroso-group nitrogen and ammonia nitrogen generation anti-nitration reaction, hydraulic detention time keeps 20 hours, nitrogen directly discharges, ammonia nitrogen in waste water content reduces to 95mg/L, total nitrogen content enters BAF after reducing to 140mg/L, microorganic adhesion forms microbial film on haydite, utilize microbial film by water outlet after further for ammonia-containing water deep removal ammonia nitrogen, ammonia-nitrogen content reduces to 5mg/L, add in copper-iron alloy fixed bed journey iron filings or plane iron spend in one or both as reductive agent, the nitrate total nitrogen of aerobic treatment water outlet is reduced to nitrogen, the waste water total nitrogen content finally obtained is lower than 15mg/L.
embodiment 4
Get nonferrous metallurgy ammonia-containing water, ammonia-nitrogen content is 2000mg/L, enter anaerobic pond after pretreatment and larger molecular organics is degraded to small organic molecule, water outlet enters Aerobic Pond and carries out biological degradation, controlling water outlet BOD is 50mg/L, anaerobic ammonia oxidation reactor is pumped into by lift pump, now, keep DO=0.5mg/L, be nitroso-group nitrogen by the Ammonia Nitrification in waste water under the effect of ammonia oxidation bacteria, pass through the effect of anaerobic ammonia oxidizing bacteria again by nitroso-group nitrogen and ammonia nitrogen generation anti-nitration reaction, hydraulic detention time keeps 30 hours, nitrogen directly discharges, ammonia nitrogen in waste water content reduces to 90mg/L, total nitrogen content enters BAF after reducing to 140mg/L, microorganic adhesion forms microbial film on haydite, utilize microbial film by water outlet after further for ammonia-containing water deep removal ammonia nitrogen, ammonia-nitrogen content reduces to 5mg/L, add in copper-iron alloy fixed bed journey iron filings or plane iron spend in one or both as reductive agent, the nitrate total nitrogen of aerobic treatment water outlet is reduced to nitrogen, the waste water total nitrogen content finally obtained is lower than 15mg/L.
Finally it should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted; although with reference to preferred embodiment to invention has been detailed description; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement; and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the protection domain of claim of the present invention.
Claims (10)
1. the treatment process of a nonferrous metallurgy ammonia-containing water, it is characterized in that, described technology utilization A/O technique removes COD, the reaction of nitrated and Anammox is there is simultaneously most ammonia-nitrogen and total nitrogen is removed in water outlet through anaerobic ammonia oxidation reactor, described anaerobic ammonia oxidation reactor water outlet enters Zero-valent Iron technique and reduces denitrogenation further after aerobic treatment, and the waste water of acquisition can direct qualified discharge.
2. treatment process as claimed in claim 1, it is characterized in that, described A/O technique comprises anaerobic pond and Aerobic Pond successively, first described waste water enter anaerobic pond after pretreatment, larger molecular organics is degraded to after small organic molecule improves biochemical and enters Aerobic Pond, after organism is carried out biological degradation, flow into anaerobic ammonia oxidation reactor.
3. treatment process as claimed in claim 1 or 2, it is characterized in that, ammonium oxidation is become nitroso-group nitrogen by the water reuse ammonia oxidation bacteria entering anaerobic ammonia oxidation reactor, the nitroso-group nitrogen generated reacts with ammonia nitrogen and generates nitrogen under the effect of anaerobic ammonia oxidizing bacteria, and described anaerobic ammonia oxidation effluent enters aerobic treatment.
4. treatment process as claimed in claim 3, it is characterized in that, in described anaerobic ammonia oxidation reactor treating processes, preferably by preposition A/O process, water inlet BOD is controlled as being less than 50mg/L, preferably dissolved oxygen content remains between 0.1-0.5mg/L, and preferably hydraulic detention time is 10-30h.
5. treatment process as claimed in claim 4, is characterized in that, through the waste water NH that described anaerobic ammonia oxidation reactor process obtains
3-N content is lower than 100mg/L, and total nitrogen content is lower than 150 mg/L.
6. treatment process as claimed in claim 1, it is characterized in that, described aerobic treatment adopts biofilm reactor, Anammox reduces the waste water after ammonia nitrogen concentration and flows into biofilm reactor, realized the deep removal of ammonia nitrogen by the microorganism be attached on filler, the ammonia nitrogen in waste water content obtained is lower than 5mg/L.
7. treatment process as claimed in claim 6, it is characterized in that, the preferred BAF of described biofilm reactor, described aerating biological filter pool filler is preferably the one in haydite, coke, quartz sand and gac.
8. treatment process as claimed in claim 1, it is characterized in that, described Zero-valent Iron technique adopts copper-iron alloy fixed bed journey, utilizes Zero-valent Iron as reductive agent, by the waste water nitrate total nitrogen reduction denitrogenation after deep removal, the waste water total nitrogen content obtained is lower than 15mg/L.
9. treatment process as claimed in claim 8, is characterized in that, described Zero-valent Iron reductive agent be preferably iron filings or plane iron spend in one or both.
10. the treatment process as described in claim arbitrary in claim 1-9, is characterized in that, described nonferrous metallurgy ammonia-containing water ammonia-nitrogen content is 500-2000mg/L.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347618A (en) * | 2015-11-15 | 2016-02-24 | 农业部沼气科学研究所 | Biological denitrogenation system for waste water containing high ammonia nitrogen |
| CN107572722A (en) * | 2017-09-21 | 2018-01-12 | 北京协同创新研究院 | A kind of water purification system and purification method |
| CN108455790A (en) * | 2018-02-13 | 2018-08-28 | 鞍钢股份有限公司 | Biochemical and advanced treatment method for coking wastewater |
| CN109809572A (en) * | 2019-03-15 | 2019-05-28 | 宜兴国际环保城科技发展有限公司 | Total ammonia nitrogen for water process removes compound bacteria |
| CN109809640A (en) * | 2019-03-15 | 2019-05-28 | 宜兴国际环保城科技发展有限公司 | A kind of biosystem of efficient removal total ammonia nitrogen |
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| CN101054226A (en) * | 2007-04-30 | 2007-10-17 | 北京市环境保护科学研究院 | nitrosation and nitration method for iron and carbon, reactor using the method and sewage denitrogenation method |
| CN101759320A (en) * | 2008-12-26 | 2010-06-30 | 财团法人工业技术研究院 | Treating system and method of ammonia nitrogen wastewater |
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| EP2210863A1 (en) * | 2005-02-28 | 2010-07-28 | Hitachi Plant Technologies, Ltd. | Equipment for treating ammonium containing liquid |
| CN101054226A (en) * | 2007-04-30 | 2007-10-17 | 北京市环境保护科学研究院 | nitrosation and nitration method for iron and carbon, reactor using the method and sewage denitrogenation method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347618A (en) * | 2015-11-15 | 2016-02-24 | 农业部沼气科学研究所 | Biological denitrogenation system for waste water containing high ammonia nitrogen |
| CN107572722A (en) * | 2017-09-21 | 2018-01-12 | 北京协同创新研究院 | A kind of water purification system and purification method |
| CN108455790A (en) * | 2018-02-13 | 2018-08-28 | 鞍钢股份有限公司 | Biochemical and advanced treatment method for coking wastewater |
| CN109809572A (en) * | 2019-03-15 | 2019-05-28 | 宜兴国际环保城科技发展有限公司 | Total ammonia nitrogen for water process removes compound bacteria |
| CN109809640A (en) * | 2019-03-15 | 2019-05-28 | 宜兴国际环保城科技发展有限公司 | A kind of biosystem of efficient removal total ammonia nitrogen |
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| CN104591510B (en) | 2016-06-29 |
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