CN108191056A - Method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water - Google Patents
Method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water Download PDFInfo
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- CN108191056A CN108191056A CN201810093467.3A CN201810093467A CN108191056A CN 108191056 A CN108191056 A CN 108191056A CN 201810093467 A CN201810093467 A CN 201810093467A CN 108191056 A CN108191056 A CN 108191056A
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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
- C02F3/286—Anaerobic digestion processes including two or more steps
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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
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Abstract
The invention belongs to Industrial Wastewater Treatment and application technology as the second resource fields, and in particular to method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water, is included the following steps：SO will be contained2、NOxIndustrial smoke denitration and wet desulphurization processing after, generate the desulphurization denitration waste water of containing sulfate and nitrate, a concentration of 50 1500mg/L of sulfate in the desulphurization denitration waste water, a concentration of 20 1000mg/L, a concentration of 50 1000mg/L of COD of nitrate in the desulphurization denitration waste water；The present invention can handle two kinds of waste water simultaneously, and high treating effect saves cost of water treatment.
Description
Technical field
The invention belongs to Industrial Wastewater Treatment and application technology as the second resource fields, and in particular to a kind of desulphurization denitration waste water with
Method is denitrogenated in the desulfurization of ammonia nitrogen waste water.
Background technology
The most of industrial trade productions in China can all use coal-burning boiler, and generation largely contains sulfur dioxide, nitrogen oxides
Flue gas needs to carry out desulphurization denitration purification, and according to national environmental statistics bulletin data in 2015, industry SO2 total emission volumns in China's were up to
1556.7 ten thousand tons, industrial discharge nitrogen oxides total amount is up to 1180.9 ten thousand tons.With China《Prevention and control of air pollution action plan》（Letter
Claim " ten, air "）, it is new《Fossil-fuel power plant atmospheric pollutant emission standard》（GB13223-2011）And special emission limit,《Environment
Air quality standard》（GB3095-2012）Etc. a series of implementation of related environmental regulatory standards, flue gas desulfurization and denitrification facility is built
If gradually perfect, desulphurization denitration waste water of the thing followed containing nitrate and sulfate also largely discharges, and be easy to cause secondary dirt
Dye.
At present, the processing method of the flue gas desulfurization and denitrification waste water of use has Physical, a chemical method, and Physical and chemical method
Material consumption consumption is larger, and economy is not high, and is difficult to make the sulfate and nitrate pollutant discharge in compliance with the standard in waste water, therefore existing
Technology needs further improve.
Invention content
Two kinds of waste water, high treating effect, the desulfurization of high financial profit are handled simultaneously the purpose of the present invention is to provide a kind of
Method is denitrogenated in the desulfurization of denitration wastewater and ammonia nitrogen waste water.
Based on above-mentioned purpose, the present invention adopts the following technical scheme that：
Method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water, is included the following steps：
（1）SO will be contained2、NOxIndustrial smoke denitration and wet desulphurization processing after, generate the desulfurization of containing sulfate and nitrate
Denitration wastewater, a concentration of 50-1500mg/L of sulfate in the desulphurization denitration waste water, nitre in the desulphurization denitration waste water
A concentration of 20-1000mg/L of hydrochlorate；
（2）By step（1）The desulphurization denitration waste water of middle containing sulfate and nitrate is uniformly mixed with discharge ammonia nitrogen waste water in industry,
A concentration of 50-1000mg/L of COD in the ammonia nitrogen waste water；
（3）By step（2）In mixed waste water by waste water pump enter anoxic short-cut denitrification pond carry out short-cut denitrification at
Reason is then passed through the sulfate type anaerobic ammonia oxidizing bacteria containing 30%-40% and the nitrous acid reduction anaerobic ammonia oxidizing bacteria of 30%-60%
Sludge anaerobic biological reaction pool in, be passed through the hydraulic detention time of waste water of anaerobic organism reaction tank as 5-10h, pH 7-8,
Temperature is 28-30 DEG C, then is carried out separation of solid and liquid, recycles elemental sulfur.
Further, the step（3）In be passed through sludge concentration in the sludge anaerobic biological reaction pool after waste water and be
4000-5000mg/L。
Further, in the mixed waste water ammonia nitrogen a concentration of 50-800mg/L, ammonia nitrogen and sulfate rub
You are than being 2-4:1, COD and nitrate molar ratio be 1.5-4.5:1.
Further, short-cut denitrification processing is by step（2）In be uniformly mixed waste water be passed through anoxic short distance
In denitrification pond, after being passed through uniformly mixed waste water, sludge concentration is 5000-6000mg/L in anoxic short-cut denitrification pond, dirty
Containing 40%-60% denitrifying bacteriums in mud, hydraulic detention time 5-6h, the pH 7-7.5 of waste water, temperature is 25-30 DEG C.
The present invention can make denitration and wet desulphurization handle after carbon source in desulphurization denitration waste water be fully utilized, and can
With in two kinds of waste water of degrading simultaneously nitrogen, amounts of sulphur contaminants is efficient, low energy consumption, flow is simple, non-secondary pollution environmental benefit and
High financial profit.
Specific embodiment
Embodiment 1：
Method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water, is included the following steps：
（1）SO will be contained2、NOxIndustrial smoke denitration and wet desulphurization processing after, generate the desulfurization of containing sulfate and nitrate
Denitration wastewater, a concentration of 50mg/L of sulfate in the desulphurization denitration waste water, nitrate in the desulphurization denitration waste water
A concentration of 20mg/L；
（2）By step（1）The desulphurization denitration waste water of middle containing sulfate and nitrate is uniformly mixed with discharge ammonia nitrogen waste water in industry,
The molar ratio of a concentration of 50-800mg/L of ammonia nitrogen in mixed waste water, ammonia nitrogen and sulfate is 2:1, COD and nitrate
Molar ratio is 1.5:1, a concentration of 50mg/L of COD in the ammonia nitrogen waste water.
（3）By step（2）In mixed waste water by waste water pump enter anoxic short-cut denitrification pond carry out the anti-nitre of short distance
Change is handled, and short-cut denitrification processing is that uniformly mixed waste water is passed through in anoxic short-cut denitrification pond, is passed through mixing
After uniform waste water, sludge concentration is 5000mg/L in anoxic short-cut denitrification pond, contains 40% denitrifying bacterium in sludge, is passed through
The hydraulic detention time 5h, pH 7 of the waste water in anoxic short-cut denitrification pond, temperature are 25 DEG C, are then passed through containing 30%-40%'s
In the sludge anaerobic biological reaction pool of sulfate type anaerobic ammonia oxidizing bacteria and 30% nitrous acid reduction anaerobic ammonia oxidizing bacteria, it is passed through
The hydraulic detention time of the waste water of anaerobic organism reaction tank is 5h, and pH 7, temperature is 28 DEG C, then is carried out separation of solid and liquid, is returned
Elemental sulfur is received, the sludge concentration is 4000mg/L, wherein the total removal rate difference of ammonia nitrogen, sulfate, nitrate, organic matter
It is 97.3%, 95.7%, 97.7%, 96.6%.
Embodiment 2：
Method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water, is included the following steps：
（1）SO will be contained2、NOxIndustrial smoke denitration and wet desulphurization processing after, generate the desulfurization of containing sulfate and nitrate
Denitration wastewater, a concentration of 775mg/L of sulfate in the desulphurization denitration waste water, nitrate in the desulphurization denitration waste water
A concentration of 510mg/L；
（2）By step（1）The desulphurization denitration waste water of middle containing sulfate and nitrate is uniformly mixed with discharge ammonia nitrogen waste water in industry,
The molar ratio of a concentration of 425mg/L of ammonia nitrogen in mixed waste water, ammonia nitrogen and sulfate is 3:1, COD and mole of nitrate
Than being 3.5:1, a concentration of 525mg/L of COD in the ammonia nitrogen waste water.
（3）By step（2）In mixed waste water by waste water pump enter anoxic short-cut denitrification pond carry out the anti-nitre of short distance
Change is handled, and short-cut denitrification processing is that uniformly mixed waste water is passed through in anoxic short-cut denitrification pond, is passed through mixing
After uniform waste water, sludge concentration is 5500mg/L in anoxic short-cut denitrification pond, contains 50% denitrifying bacterium in sludge, is passed through
The hydraulic detention time 5.5h, pH 7.2 of the waste water in anoxic short-cut denitrification pond, temperature are 28 DEG C, are then passed through containing 35%
In the sludge anaerobic biological reaction pool of sulfate type anaerobic ammonia oxidizing bacteria and 45% nitrous acid reduction anaerobic ammonia oxidizing bacteria, it is passed through
The hydraulic detention time of the waste water of anaerobic organism reaction tank is 7.5h, and pH 7.5, temperature is 29 DEG C, then is carried out solid-liquid point
From recycling elemental sulfur, the sludge concentration is total removal of 4500mg/L, wherein ammonia nitrogen, sulfate, nitrate, organic matter
Rate is respectively 96.9%, 95.3%, 97.1%, 96.8%.
Embodiment 3：
Method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water, is included the following steps：
（1）SO will be contained2、NOxIndustrial smoke denitration and wet desulphurization processing after, generate the desulfurization of containing sulfate and nitrate
Denitration wastewater, a concentration of 1500mg/L of sulfate in the desulphurization denitration waste water, nitric acid in the desulphurization denitration waste water
A concentration of 1000mg/L of salt；
（2）By step（1）The desulphurization denitration waste water of middle containing sulfate and nitrate is uniformly mixed with discharge ammonia nitrogen waste water in industry,
The molar ratio of a concentration of 800mg/L of ammonia nitrogen in mixed waste water, ammonia nitrogen and sulfate is 4:1, COD and mole of nitrate
Than being 4.5:1, a concentration of 1000mg/L of COD in the ammonia nitrogen waste water.
（3）By step（2）In mixed waste water by waste water pump enter anoxic short-cut denitrification pond carry out the anti-nitre of short distance
Change is handled, and short-cut denitrification processing is that uniformly mixed waste water is passed through in anoxic short-cut denitrification pond, is passed through mixing
After uniform waste water, sludge concentration is 6000mg/L in anoxic short-cut denitrification pond, contains 60% denitrifying bacterium in sludge, is passed through
The hydraulic detention time 6h, pH 7.5 of the waste water in anoxic short-cut denitrification pond, temperature are 30 DEG C, are then passed through containing 40% sulphur
In the sludge anaerobic biological reaction pool of hydrochlorate type anaerobic ammonia oxidizing bacteria and 60% nitrous acid reduction anaerobic ammonia oxidizing bacteria, it is passed through and detests
The hydraulic detention time of the waste water of oxygen biological reaction pool is 10h, and pH 8, temperature is 30 DEG C, then is carried out separation of solid and liquid, is returned
Elemental sulfur is received, the sludge concentration is 5000mg/L, wherein the total removal rate difference of ammonia nitrogen, sulfate, nitrate, organic matter
It is 95.9%, 96.3%, 98.1%, 97.8%.
Claims (4)
1. method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water, which is characterized in that is included the following steps：
（1）SO will be contained2, after the industrial smoke denitration of NOx and wet desulphurization processing, generate the desulfurization of containing sulfate and nitrate
Denitration wastewater, a concentration of 50-1500mg/L of sulfate in the desulphurization denitration waste water, nitre in the desulphurization denitration waste water
A concentration of 20-1000mg/L of hydrochlorate；
（2）By step（1）The desulphurization denitration waste water of middle containing sulfate and nitrate is uniformly mixed with discharge ammonia nitrogen waste water in industry,
A concentration of 50-1000mg/L of COD in the ammonia nitrogen waste water；
（3）By step（2）In mixed waste water by waste water pump enter anoxic short-cut denitrification pond carry out short-cut denitrification at
Reason is then passed through the sulfate type anaerobic ammonia oxidizing bacteria containing 30%-40% and the nitrous acid reduction anaerobic ammonia oxidizing bacteria of 30%-60%
Sludge anaerobic biological reaction pool in, be passed through the hydraulic detention time of waste water of anaerobic organism reaction tank as 5-10h, pH 7-8,
Temperature is 28-30 DEG C, then is carried out separation of solid and liquid, recycles elemental sulfur.
2. method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water according to claim 1 and ammonia nitrogen waste water, which is characterized in that
The step（3）In to be passed through sludge concentration in the sludge anaerobic biological reaction pool after waste water be 4000-5000mg/L.
3. method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water according to claim 1 and ammonia nitrogen waste water, which is characterized in that
The step（2）In in mixed waste water ammonia nitrogen a concentration of 50-800mg/L, the molar ratio of ammonia nitrogen and sulfate is 2-
4:1, COD and nitrate molar ratio be 1.5-4.5:1.
4. method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water according to claim 1 and ammonia nitrogen waste water, which is characterized in that
The short-cut denitrification processing is by step（2）In be uniformly mixed waste water be passed through in anoxic short-cut denitrification pond, be passed through mixed
After closing uniform waste water, sludge concentration is 5000-6000mg/L in anoxic short-cut denitrification pond, and it is anti-to contain 40%-60% in sludge
Nitrifier, hydraulic detention time 5-6h, the pH 7-7.5 of waste water, temperature are 25-30 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862622A (en) * | 2018-06-25 | 2018-11-23 | 苏州科技大学 | A kind of method of ammonia-containing water denitrogenation |
| CN110316824A (en) * | 2019-08-07 | 2019-10-11 | 大连海事大学 | A kind of marine exhaust scrub raffinate cooperates with processing unit and cooperative processing method with Sewage from Ships |
| CN110316896A (en) * | 2019-08-13 | 2019-10-11 | 北京中航泰达环保科技股份有限公司 | Dry reactive coke/charcoal desulphurization denitration rich gas pretreated waste water processing system |
| CN111302566A (en) * | 2020-03-09 | 2020-06-19 | 苏州中晟环境修复股份有限公司 | Sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method |
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| JP2003033796A (en) * | 2001-07-26 | 2003-02-04 | Kurita Water Ind Ltd | Biological denitration method |
| CN101708926A (en) * | 2009-12-14 | 2010-05-19 | 广东省微生物研究所 | Method for biologically treating wastewater by simultaneously desulfurizing, denitrifying and decoloring |
| CN102923853A (en) * | 2012-11-06 | 2013-02-13 | 沈阳建筑大学 | Waste water treatment method of sulfur autotrophic denitrification-anaerobic ammonia oxidation coupling desulphuration denitrification |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003033796A (en) * | 2001-07-26 | 2003-02-04 | Kurita Water Ind Ltd | Biological denitration method |
| CN101708926A (en) * | 2009-12-14 | 2010-05-19 | 广东省微生物研究所 | Method for biologically treating wastewater by simultaneously desulfurizing, denitrifying and decoloring |
| CN102923853A (en) * | 2012-11-06 | 2013-02-13 | 沈阳建筑大学 | Waste water treatment method of sulfur autotrophic denitrification-anaerobic ammonia oxidation coupling desulphuration denitrification |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862622A (en) * | 2018-06-25 | 2018-11-23 | 苏州科技大学 | A kind of method of ammonia-containing water denitrogenation |
| CN110316824A (en) * | 2019-08-07 | 2019-10-11 | 大连海事大学 | A kind of marine exhaust scrub raffinate cooperates with processing unit and cooperative processing method with Sewage from Ships |
| CN110316896A (en) * | 2019-08-13 | 2019-10-11 | 北京中航泰达环保科技股份有限公司 | Dry reactive coke/charcoal desulphurization denitration rich gas pretreated waste water processing system |
| CN111302566A (en) * | 2020-03-09 | 2020-06-19 | 苏州中晟环境修复股份有限公司 | Sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method |
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