CN105540993A - High-ammonia nitrogen wastewater treatment technology - Google Patents
High-ammonia nitrogen wastewater treatment technology Download PDFInfo
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- CN105540993A CN105540993A CN201510808804.9A CN201510808804A CN105540993A CN 105540993 A CN105540993 A CN 105540993A CN 201510808804 A CN201510808804 A CN 201510808804A CN 105540993 A CN105540993 A CN 105540993A
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Abstract
The invention relates to a high-ammonia nitrogen wastewater treatment technology. The technology sequentially comprises the following steps: high-ammonia nitrogen wastewater automatically flows into an equalizing tank, the amount and the quality of the wastewater are adjusted in the equalizing tank, the wastewater is lifted to a pH adjusting pool 1 through a pump, and the pH value of the wastewater is improved to about 10; the wastewater is pumped into a two-stage ammonia nitrogen stripping tower, air is used to strip high-concentration ammonia nitrogen in the wastewater to a low concentration, and the stripped ammonia nitrogen is adopted by diluted sulfuric acid; stripped wastewater automatically flows into a biochemical pool and is further degraded; a biochemical degradation system adopts a two stage A2/O biochemical treatment method; and the wastewater is fully nitrified and denitrified in a two stage A2/O biochemical treatment pool. Compared with the prior art, the technology provided by the invention has the following advantages: 1, discharge standards can be stably reached through adopting the technology to treat the high-ammonia nitrogen wastewater; 2, the physicochemical and biochemical ammonia nitrogen removal efficiency can be flexibly adjusted, and standard reaching discharge is realized under an optimal cost condition; and 3, the wastewater can be processed to produce a fertilizer, so wastes are changed into valuables, and comprehensive utilization of the wastewater is realized.
Description
Technical field
The present invention relates to a kind of high ammonia-nitrogen wastewater treatment process.
Background technology
Ammonia is important industrial raw material, in pharmacy, food-processing, be widely applied in the multiple industry such as rare-earth smelting, but simultaneously, too much ammonia can become the important component part of environmental pollution, not only there is ammonia pollution in sanitary sewage, and at rare earth, whipping agent, catalyzer, agricultural chemicals, monosodium glutamate, chemical fertilizer, leather, gunpowder, coking, oil refining, also high ammonia pollution is there is in numerous industry such as meat processing, ammonia nitrogen concentration by 200mg/L to 100, 000mg/L is not etc., far above the concentration of ammonia in sanitary sewage, even the percolate that garbage loading embeading produces, wherein the concentration of ammonia is also up to 1000mg/L ~ 10000mg/L.These high-ammonia wastewater, its saltiness is often also very high, some saltiness even up to 16%, far away higher than the saltiness (2% ~ 4%) of seawater.And existing standard is very tight to the requirement of ammonia in water, therefore in high-ammonia wastewater, the removal of ammonia nitrogen becomes problem demanding prompt solution.
The high-ammonia wastewater treatment technology taked at present can be divided into three major types, and one is biologic treating technique, and two is chemical treatment methods, and three is materializing strategy technology.
Biological treatment mainly contains short-cut nitrification and denitrification, synchronous nitration and denitrification and biochemical oxidation method, be characterized in that energy consumption is relatively low, but long processing period, water outlet ammonia nitrogen difficulty meets emission request, and especially biological oxidation process, is converted into nitric nitrogen by aerobe by ammonia-state nitrogen, because oxidation cycle is long, make water outlet concentration of suspension high, mud-water separation difficulty, and total nitrogen difficulty meet demand up to standard.
The chemical treatment of ammonia nitrogen is exactly by the ammonia-state nitrogen in waste water, by adding magnesium salts and phosphoric acid salt, and after pH regulator, being converted into magnesium ammonium phosphate (being commonly called as struvite), then being separated from system by magnesium ammonium phosphate.This method not only needs to consume a large amount of magnesium chloride, phosphoric acid salt etc., and has much room for improvement to the clearance of ammonium in engineering, has the ammonium salt of considerable part still to stay in systems in which, be difficult to meet up to standard or emission request after process.
Materializing strategy technology can be divided into again air stripping technology and heating distillation technology, is exactly the ammonia first by pH regulator, the ionic state height ammonium in waste water being converted into free state or molecular state, then by air stripping or add thermal rectification the ammonia of molecular state is removed from system.Adopt stripping technology except ammonia is owing to needing a large amount of air, therefore there is power consumption large, the easy fouling of stripping tower, easily produce secondary pollution and go out the features such as shipwreck meets the demands.Adopt heating distillation technology except ammonia, have and reclaim ammonia purity advantages of higher, but because ammonia still process needs distillate at the bottom of heating, the gaseous ammonia steamed and still all to need cold to cool, therefore energy consumption is higher, more in ammonia synthesizing industry application in engineering, but because distillation operation difficulty is large, water outlet generally also needs advanced treatment, otherwise is difficult to meet emission request.
Summary of the invention
The present invention is intended to the defect overcoming prior art existence, provides a kind of high ammonia-nitrogen wastewater treatment process of stripping+biochemistry.It effectively can process the high ammonia-nitrogen wastewater of different concns and equal can stablizing reaches emission standard.
A treatment process for high ammonia-nitrogen wastewater, comprises the following steps successively:
(1) high ammonia-nitrogen wastewater is from flowing into equalizing tank, waste water is carried out to the adjustment of the water yield, water quality in equalizing tank, is then promoted in PH adjustment pond 1 with pump and waste water PH is brought up to about 10.
(2) waste water is pumped into two-stage ammonia-nitrogen stripping tower, utilize air by the ammonia nitrogen in high density stripping in waste water to low concentration, the ammonia nitrogen that stripping goes out adopts dilute sulphuric acid to absorb.
(3) waste water after stripping, from flowing into biochemistry pool, is degraded further.
(4) biochemical degradation system adopts two sections of A
2/ O biochemical processing process.The mode that first paragraph biochemical processing process adopts catalytic oxidation+activated sludge process to combine is run, and second segment biochemical processing process adopts MBBR mode to run.
(5) waste water is at two sections of A
2react through sufficient nitration denitrification in/O biochemical treatment tank, ammonia nitrogen can be greatly reduced, and water outlet just can reach emission standard and directly discharge after precipitation.
The present invention compared with prior art, has the following advantages:
1, adopt this art breading high ammonia-nitrogen wastewater to stablize and reach emission standard.
2, adopt the treatment process that this materialization and biochemistry combine, the ammonia nitrogen removal efficiency of Physiochemical and biochemical can be adjusted flexibly, qualified discharge under optimal cost condition.
3, the ammonia nitrogen that stripping goes out is absorbed into ammonium sulfate by dilute sulphuric acid, and can be produced into fertilizer turns waste into wealth and fully utilize.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of high ammonia-nitrogen wastewater treatment process provided by the invention.
Claims (1)
1. a high ammonia-nitrogen wastewater treatment process, is characterized in that, the method comprises the following steps successively:
(1) high ammonia-nitrogen wastewater is from flowing into equalizing tank, waste water is carried out to the adjustment of the water yield, water quality in equalizing tank, is then promoted in PH adjustment pond 1 with pump and waste water PH is brought up to about 10;
(2) waste water is pumped into two-stage ammonia-nitrogen stripping tower, utilize air by the ammonia nitrogen in high density stripping in waste water to low concentration, the ammonia nitrogen that stripping goes out adopts dilute sulphuric acid to absorb;
(3) waste water after stripping, from flowing into biochemistry pool, is degraded further;
(4) biochemical degradation system adopts two sections of A2/O biochemical processing process, and the mode that first paragraph biochemical processing process adopts catalytic oxidation and activated sludge process to combine is run, and second segment biochemical processing process adopts MBBR mode to run;
(5) waste water reacts through sufficient nitration denitrification in two sections of A2/O biochemical treatment tanks, and ammonia nitrogen can be greatly reduced, and water outlet just can reach emission standard and directly discharge after precipitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510808804.9A CN105540993A (en) | 2015-11-20 | 2015-11-20 | High-ammonia nitrogen wastewater treatment technology |
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| CN201510808804.9A CN105540993A (en) | 2015-11-20 | 2015-11-20 | High-ammonia nitrogen wastewater treatment technology |
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| CN105540993A true CN105540993A (en) | 2016-05-04 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430244A (en) * | 2016-11-08 | 2017-02-22 | 南京大学 | Method for recovering and purifying ammonia gas from ammonia nitrogen wastewater |
| CN108503122A (en) * | 2017-02-28 | 2018-09-07 | 中国石油化工股份有限公司 | A method of adding polyurethane filler processing high ammonia-nitrogen wastewater |
| CN109319976A (en) * | 2018-10-29 | 2019-02-12 | 江西铜鼓有色冶金化工有限责任公司 | A kind of technique using gaseous state film process ammonia nitrogen waste water |
| CN110872169A (en) * | 2018-09-04 | 2020-03-10 | 惠博普(武汉)生物环保科技有限公司 | Biological enhanced treatment method for high-COD acetic acid wastewater |
| CN111977900A (en) * | 2020-08-17 | 2020-11-24 | 山东绿创环境科技有限公司 | Coal-based urea production wastewater treatment process, system and application |
| CN112010497A (en) * | 2020-07-23 | 2020-12-01 | 九江博泰环保有限公司 | High ammonia nitrogen wastewater treatment process |
| CN116199390A (en) * | 2023-04-06 | 2023-06-02 | 江苏省沙钢钢铁研究院有限公司 | Treatment process of acid-regenerated high ammonia nitrogen wastewater |
-
2015
- 2015-11-20 CN CN201510808804.9A patent/CN105540993A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430244A (en) * | 2016-11-08 | 2017-02-22 | 南京大学 | Method for recovering and purifying ammonia gas from ammonia nitrogen wastewater |
| CN106430244B (en) * | 2016-11-08 | 2019-05-31 | 南京大学 | A method of it is recycled from ammonia nitrogen waste water and purifies ammonia |
| CN108503122A (en) * | 2017-02-28 | 2018-09-07 | 中国石油化工股份有限公司 | A method of adding polyurethane filler processing high ammonia-nitrogen wastewater |
| CN110872169A (en) * | 2018-09-04 | 2020-03-10 | 惠博普(武汉)生物环保科技有限公司 | Biological enhanced treatment method for high-COD acetic acid wastewater |
| CN109319976A (en) * | 2018-10-29 | 2019-02-12 | 江西铜鼓有色冶金化工有限责任公司 | A kind of technique using gaseous state film process ammonia nitrogen waste water |
| CN109319976B (en) * | 2018-10-29 | 2022-01-28 | 江西铜鼓有色冶金化工有限责任公司 | Process for treating ammonia nitrogen wastewater by adopting gaseous membrane |
| CN112010497A (en) * | 2020-07-23 | 2020-12-01 | 九江博泰环保有限公司 | High ammonia nitrogen wastewater treatment process |
| CN111977900A (en) * | 2020-08-17 | 2020-11-24 | 山东绿创环境科技有限公司 | Coal-based urea production wastewater treatment process, system and application |
| CN116199390A (en) * | 2023-04-06 | 2023-06-02 | 江苏省沙钢钢铁研究院有限公司 | Treatment process of acid-regenerated high ammonia nitrogen wastewater |
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Application publication date: 20160504 |