CN106277480A - A kind of process technique of high-concentration ammonia nitrogenous wastewater - Google Patents
A kind of process technique of high-concentration ammonia nitrogenous wastewater Download PDFInfo
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- CN106277480A CN106277480A CN201610795412.8A CN201610795412A CN106277480A CN 106277480 A CN106277480 A CN 106277480A CN 201610795412 A CN201610795412 A CN 201610795412A CN 106277480 A CN106277480 A CN 106277480A
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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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- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses the process technique of a kind of high-concentration ammonia nitrogenous wastewater, comprise the following steps: workshop high ammonia-nitrogen wastewater is pumped in sewage collecting pool, detection ammonia nitrogen in waste water index, according to Testing index, by the ammonia nitrogen value of tap water dilution regulation high ammonia-nitrogen wastewater in OK range；Collecting pit high ammonia-nitrogen wastewater is pumped into micro cell, adds salt acid for adjusting pH value, at micro cell aeration；After aeration terminates, waste water being pumped into coagulation reaction tank, add aluminium polychlorid and the polyacrylamide solution of trace while stirring, after after coagulating, waste water outflow precipitates to coagulative precipitation tank, supernatant overflow enters breakpoint chlorination pond；Under agitation, in breakpoint chlorination pond, it is slowly added to liquor natrii hypochloritis, carries out oxidation reaction；The Ammonia-nitrogen wastewater treatment technology that the present invention provides, significantly extends the method and processes the ammonia nitrogen waste water scope of application, greatly reduce usage amount and the processing cost of sodium hypochlorite, be significantly improved the treatment effeciency of high-concentration ammonia nitrogenous wastewater.
Description
Technical field
The present invention relates to a kind of waste water treatment process, be specifically related to the process technique of a kind of high-concentration ammonia nitrogenous wastewater.
Background technology
Light electrolysis sewage disposal technology is at a kind of new type water traditional adsorption process combined with electrochemical process
Reason technology, micro electrolysis tech is to utilize ferrum-carbon granules material to corrode the light electrolysis mistake of formation in electrolyte solution as light electrolysis matter
Journey processes a kind of electrochemical techniques of waste water, and under certain condition, waste water creates substantial amounts of new life after micro-electrolysis reaction
State [H] and Fe2+, there is the highest chemism, can be destroyed some with the many component generation redox reaction in waste water
The molecular structure of organic substance, makes the double bond fracture of some unsaturated chromophoric group in waste water, makes chromophoric group destroy and remove
Colourity；Also make the material of some bio-refractory be transformed into the material of easy biochemical treatment simultaneously, substantially increase giving birth to of waste water
The property changed.Nascent state Fe that electrode reaction produces2+ it is a kind of absorption, containing and the great coagulant of complexing power, it is possible to effectively
Organic pollution in absorption waste water, at suitable pH and O2In the presence of, Fe (OH) can be formed2With Fe (OH)3Flocculation sediment.Separately
Outward, under micro-galvanic element surrounding electric field effect, the polluter existed with colloidal state in waste water can complete in very short time
Electrophoretic deposition process.Therefore, iron chips micro-electrolysis pre-treating difficultly-degradable industrial wastewater can play adsorption-flocculation, oxidoreduction and complexation
Etc. multiple effect, can effectively remove the colourity in waste water, SS and COD.Light electrolysis sewage disposal technology is as high-concentration waste water
Preprocess method, there is the advantages such as applied widely, high treating effect, operating cost are low, be therefore widely used in dyestuff, electricity
In the process of the industry waste water such as plating, petrochemical industry, pharmacy, pesticide.
Ammonia is the important raw material of industry, obtain extensively should in the multiple industries such as pharmacy, food processing, rare-earth smelting
With, but simultaneously, too much ammonia can become the important component part of environmental pollution, not only there is ammonia pollution in sanitary sewage, and
In numerous industries such as rare earth, foaming agent, catalyst, pesticide, monosodium glutamate, chemical fertilizer, leather, gunpowder, coking, oil refining, meat packing
There is also high ammonia pollution, ammonia nitrogen concentration is by 200mg/L-100,000mg/L, far above the concentration of ammonia in sanitary sewage, i.e.
Make be garbage loading embeading produce percolate, wherein the concentration of ammonia also be up to 1000mg/L-10000mg/L.These high-ammonia wastewater, its
Salinity is the highest, and some salinity are even as high as 16%, significantly larger than salinity 2%-4% of sea water.And it is existing
Standard is very tight to the requirement of ammonia in water, and 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: one is biologic treating technique, and two is materializing strategy
Technology, three is chemical treatment method.
Biological treatment mainly has short-cut nitrification and denitrification, synchronous nitration and denitrification and biochemical oxidation method, is characterized in energy
Consume relatively low, but long processing period, water outlet ammonia nitrogen difficulty meets emission request, and especially biological oxidation process passes through aerobe
Ammoniacal nitrogen is converted into nitrate nitrogen, owing to oxidation cycle is long so that water outlet concentration of suspension is high, mud-water separation difficulty, Er Qiezong
Nitrogen difficulty meets demand up to standard.
Materializing strategy technology can be divided into again air stripping technology and heating distillation technology, it is simply that first passes through pH regulator by waste water
In ionic state height ammonium be converted into the ammonia of free state or molecular state, then by air stripping or add thermal rectification by the ammonia of molecular state from
System is removed.Using stripping technology except ammonia is due to the substantial amounts of air of needs, therefore have power consumption big, stripping tower is easily tied
Dirt, easily produces secondary pollution and goes out shipwreck and meet the features such as requirement.Use heating distillation technology except ammonia, there is recovery ammonia pure
Degree advantages of higher, but owing to ammonia still process needs heating, the gaseous ammonia that steams and bottom distillate to be required for cold cooling, therefore energy consumption
Higher, more in ammonia synthesizing industry application in engineering, but owing to distillation operation difficulty is big, water outlet the most also needs advanced treating, no
Then it is difficult to meet emission request.
The chemical treatment of ammonia nitrogen, it is simply that by the ammoniacal nitrogen in waste water, by adding magnesium salt and phosphate, and through pH regulator
After, it is converted into ammoniomagnesium phosphate, then ammoniomagnesium phosphate is separated from system.The method not only needs to consume substantial amounts of chlorination
Magnesium, phosphate etc., and in engineering, clearance to ammonium has much room for improvement, and has substantial portion of ammonium salt to remain in system after process
In, it is difficult to meet up to standard or emission request；And another kind of chemical treatment method is break point chlorination, this method be by chlorine or
Person's sodium hypochlorite is passed through in waste water, and NH3-N in waste water is oxidized to the chemical denitrification process of nitrogen.Needed for processing ammonia nitrogen waste water
Actual amount of chlorine depends on temperature, pH value and ammonia nitrogen concentration.Aoxidize 9～10mg chlorine required for every gram of ammonia nitrogen.Breakpoint chlorination
The advantage that method is the most prominent is can be homogenizing by correct control chlorine dosage, greatly reduces the ammonia nitrogen in waste water, can also make simultaneously
Waste water reaches the purpose of sterilization.Chloridising when processing Low Concentration Ammonia Containing Wastewater, handling rate up to 90-100%, effect stability,
Not by Water Temperature, invest less, but operating cost is somewhat expensive.
Summary of the invention
Present invention aims to the deficiencies in the prior art, now provide one to solve existing breakpoint chlorination technique work
Skill drawback during processing ammonia nitrogen waste water, greatly reduces usage amount and the processing cost of sodium hypochlorite, to highly concentrated
Degree ammonia nitrogen waste water treatment effeciency be significantly improved, developed resource-conserving, environmentally friendly ammonia nitrogen in high density give up
The process technique of water.
For solving above-mentioned technical problem, the technical solution used in the present invention is: place's science and engineering of a kind of high-concentration ammonia nitrogenous wastewater
Skill, its innovative point is: comprise the following steps:
(1) workshop high ammonia-nitrogen wastewater is pumped in sewage collecting pool, detect ammonia nitrogen in waste water index, according to Testing index, logical
Cross the ammonia nitrogen value of tap water dilution regulation high ammonia-nitrogen wastewater in OK range；
(2) collecting pit high ammonia-nitrogen wastewater is pumped into micro cell, add salt acid for adjusting pH value, at micro cell aeration；
(3) after aeration terminates, waste water is pumped into coagulation reaction tank, add aluminium polychlorid and polyacrylamide while stirring
Solution, after after coagulating, waste water outflow precipitates to coagulative precipitation tank, supernatant overflow enters breakpoint chlorination pond；
(4) under agitation, in breakpoint chlorination pond, it is slowly added to liquor natrii hypochloritis, carries out oxidation reaction；
Reaction mechanism is as follows:
2NH3+3NaClo→N2↑+3H20+3NaCl。
Further, in described step (1), former water ammonia nitrogen index is at 40000-120000mg/L, and former water pH index is 6-
9, described tap water extension rate is at 1-3 times, and the ammonia nitrogen value scope being suitable for is 8000-30000mg/L.
Further, in described step (2), regulation pH value range between 4-7, described aeration time 2-5 hour.
Further, in described step (3), polymeric aluminum chlorides solution content exists at 1-5%, polyacrylamide solution content
0.05-0.2%.
Further, in described step (4), described liquor natrii hypochloritis's dosage is 1-2.5:1 with the volume ratio of former water,
Described oxidation time is 2-5 hour.
Beneficial effects of the present invention is as follows: the Ammonia-nitrogen wastewater treatment technology that the present invention provides, and is light electrolysis associating break
Chloridising, compared with existing breakpoint chlorination technology process, significantly extends the method and processes the ammonia nitrogen waste water scope of application, greatly
Reduce usage amount and the processing cost of sodium hypochlorite, the treatment effeciency of high-concentration ammonia nitrogenous wastewater be significantly improved,
It also avoid secondary pollution problem and the step of subsequent treatment that existing technique produces, develop resource-conserving, environment friend
The production technology of good type.
Detailed description of the invention
The process technique of high-concentration ammonia nitrogenous wastewater of the present invention, comprises the following steps:
(1) workshop high ammonia-nitrogen wastewater is pumped in sewage collecting pool, detect ammonia nitrogen in waste water index, according to Testing index, logical
Cross the ammonia nitrogen value of tap water dilution regulation high ammonia-nitrogen wastewater in OK range；
(2) collecting pit high ammonia-nitrogen wastewater is pumped into micro cell, add salt acid for adjusting pH value, at micro cell aeration；
(3) after aeration terminates, waste water is pumped into coagulation reaction tank, add aluminium polychlorid and polyacrylamide while stirring
Solution, after after coagulating, waste water outflow precipitates to coagulative precipitation tank, supernatant overflow enters breakpoint chlorination pond；
(4) under agitation, in breakpoint chlorination pond, it is slowly added to liquor natrii hypochloritis, carries out oxidation reaction；
Reaction mechanism is as follows:
2NH3+3NaClo→N2↑+3H20+3NaCl。
As embodiment, during more specifically embodiment is step (1), former water ammonia nitrogen index is at 40000-120000mg/
L, former water pH index is 6-9, and tap water extension rate is at 1-3 times, and the ammonia nitrogen value scope being suitable for is 8000-30000mg/L；Step
(2) in, regulation pH value range between 4-7, aeration time 2-5 hour；In step (3), polymeric aluminum chlorides solution content is at 1-
5%, polyacrylamide solution content is at 0.05-0.2%；In step (4), described liquor natrii hypochloritis's dosage and the body of former water
Long-pending ratio is 1-2.5:1, and oxidation time is 2-5 hour.
Embodiment 1
The process technique of a kind of high-concentration ammonia nitrogenous wastewater, comprises the following steps:
(1) pumping in sewage collecting pool by 3 cubes of workshop high ammonia-nitrogen wastewater, detection ammonia nitrogen in waste water index is 76800mg/L,
PH value 7.98；According to Testing index, the ammonia nitrogen value adding tap water regulation high ammonia-nitrogen wastewater is 28500mg/L；
(2) pumping into micro cell by regulating qualified collecting pit high ammonia-nitrogen wastewater 8 cubes, adding salt acid for adjusting pH is 4,
After micro cell aeration 2 hours；
(3) waste water is pumped into coagulation reaction tank, add while stirring 1% mass concentration polymeric aluminum chlorides solution and
The polyacrylamide solution of 0.05% mass concentration, after after coagulating, waste water outflow precipitates to coagulative precipitation tank, supernatant
Hydrorrhea flows into breakpoint chlorination pond；Under agitation, in breakpoint chlorination pond, it is slowly added to liquor natrii hypochloritis 7.5 cubes, enters
Row oxidation reaction, 2 hours response time, after reaction terminates, sampling detection, ammonia nitrogen value 76mg/L, ammonia nitrogen removal frank 99.7%.
Embodiment 2
The process technique of a kind of high-concentration ammonia nitrogenous wastewater, comprises the following steps:
(1) pumping in sewage collecting pool by 3 cubes of workshop high ammonia-nitrogen wastewater, detection ammonia nitrogen in waste water index is 49400mg/L,
PH value 7.66, according to Testing index, the ammonia nitrogen value adding tap water regulation high ammonia-nitrogen wastewater is 24700mg/L；
(2) pumping into micro cell by regulating qualified collecting pit high ammonia-nitrogen wastewater about 6 cubes, adding salt acid for adjusting pH is 4,
After micro cell aeration 5 hours；
(3) waste water is pumped into coagulation reaction tank, add while stirring 5% mass concentration polymeric aluminum chlorides solution and
The polyacrylamide solution of 0.2% mass concentration, after after coagulating, waste water outflow precipitates to coagulative precipitation tank, supernatant
Overflow enters breakpoint chlorination pond；
(4) under agitation, in breakpoint chlorination pond, it is slowly added to liquor natrii hypochloritis 6.5 cubes, carries out oxidation anti-
Should, 5 hours response time；After reaction terminates, sampling detection, ammonia nitrogen value 55mg/L, ammonia nitrogen removal frank 99.8%.
Embodiment 3
(1) pumping in sewage collecting pool by 3 cubes of workshop high ammonia-nitrogen wastewater, detection ammonia nitrogen in waste water index is 8850mg/L,
PH value 7.59, according to Testing index, the ammonia nitrogen value adding tap water regulation high ammonia-nitrogen wastewater is 10000mg/L；
(2) collecting pit high ammonia-nitrogen wastewater 3 cubes pumping into micro cell, adding salt acid for adjusting pH is 4.24, at light electrolysis
After pond aeration 3 hours；
(3) waste water is pumped into coagulation reaction tank, add while stirring 2% mass concentration polymeric aluminum chlorides solution and
The polyacrylamide solution of 0.12% mass concentration, after after coagulating, waste water outflow precipitates to coagulative precipitation tank, supernatant
Hydrorrhea flows into breakpoint chlorination pond；
(4) under agitation, in breakpoint chlorination pond, it is slowly added to liquor natrii hypochloritis 3 cubes, carries out oxidation reaction,
2 hours response time, after reaction terminates, sampling detection, ammonia nitrogen value 28mg/L, ammonia nitrogen removal frank 99.7%.
| Ammonia nitrogen removal frank (%) | |
| Embodiment 1 | 99.7% |
| Embodiment 2 | 99.8 |
| Embodiment 3 | 99.7% |
From above table, the clearance of the high-concentration ammonia nitrogenous wastewater under embodiment 1, embodiment 2 and embodiment 3 all exists
More than 99.5%, the treatment effeciency of high-concentration ammonia nitrogenous wastewater is significantly improved.
The Ammonia-nitrogen wastewater treatment technology that the present invention provides, is light electrolysis associating break point chlorination, with existing breakpoint chlorination
Technology process is compared, and significantly extends the method and processes the ammonia nitrogen waste water scope of application, greatly reduces the use of sodium hypochlorite
Amount and processing cost, be significantly improved to the treatment effeciency of high-concentration ammonia nitrogenous wastewater, it also avoid existing technique and produces
Secondary pollution problem and the step of subsequent treatment, developed resource-conserving, environmentally friendly production technology.
Above-described embodiment is presently preferred embodiments of the present invention, is not the restriction to technical solution of the present invention, as long as
The technical scheme that can realize on the basis of above-described embodiment without creative work, is regarded as falling into patent of the present invention
Rights protection in the range of.
Claims (5)
1. the process technique of a high-concentration ammonia nitrogenous wastewater, it is characterised in that: comprise the following steps:
(1) workshop high ammonia-nitrogen wastewater is pumped in sewage collecting pool, detect ammonia nitrogen in waste water index, according to Testing index, by certainly
The ammonia nitrogen value of water dilution regulation high ammonia-nitrogen wastewater is in OK range；
(2) collecting pit high ammonia-nitrogen wastewater is pumped into micro cell, add salt acid for adjusting pH value, at micro cell aeration；
(3) after aeration terminates, waste water is pumped into coagulation reaction tank, add aluminium polychlorid while stirring and polyacrylamide is molten
Liquid, after after coagulating, waste water outflow precipitates to coagulative precipitation tank, supernatant overflow enters breakpoint chlorination pond；
(4) under agitation, in breakpoint chlorination pond, it is slowly added to liquor natrii hypochloritis, carries out oxidation reaction；
Reaction mechanism is as follows:
2NH3+3NaClo→N2↑+3H20+3NaCl。
The process technique of a kind of high-concentration ammonia nitrogenous wastewater the most according to claim 1, it is characterised in that: described step
(1), in, former water ammonia nitrogen index is at 40000-120000mg/L, and former water pH index is 6-9, and described tap water extension rate is at 1-3
Times, the ammonia nitrogen value scope being suitable for is 8000-30000mg/L.
The process technique of a kind of high-concentration ammonia nitrogenous wastewater the most according to claim 1, it is characterised in that: described step
(2) in, regulation pH value range between 4-7, described aeration time 2-5 hour.
The process technique of a kind of high-concentration ammonia nitrogenous wastewater the most according to claim 1, it is characterised in that: described step
(3) in, polymeric aluminum chlorides solution mass concentration is 1-5 ‰, and polyacrylamide solution mass concentration is 0.05-0.2 ‰.
The process technique of a kind of high-concentration ammonia nitrogenous wastewater the most according to claim 1, it is characterised in that: described step
(4), in, described liquor natrii hypochloritis's dosage is 1-2.5:1 with the volume ratio of former water, and described oxidation time is that 2-5 is little
Time.
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Cited By (5)
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|---|---|---|---|---|
| CN107381892A (en) * | 2017-09-09 | 2017-11-24 | 南通意特化工有限公司 | A kind of handling process of high-concentration ammonia nitrogenous wastewater |
| CN108793518A (en) * | 2018-06-25 | 2018-11-13 | 南京中衡元环保科技有限公司 | Ammonia nitrogen waste water treatment method and device |
| CN109516604A (en) * | 2018-12-28 | 2019-03-26 | 广州薪光合环保技术有限公司 | The sewage water treatment method of removal of ammonia and nitrogen |
| CN111995105A (en) * | 2020-07-22 | 2020-11-27 | 华南理工大学 | Urea desorption waste liquid ammonia nitrogen emission reduction and waste water recycling equipment and use method |
| CN113735381A (en) * | 2021-09-23 | 2021-12-03 | 嘉应学院 | Treatment method of water body with high ammonia nitrogen content |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381892A (en) * | 2017-09-09 | 2017-11-24 | 南通意特化工有限公司 | A kind of handling process of high-concentration ammonia nitrogenous wastewater |
| CN108793518A (en) * | 2018-06-25 | 2018-11-13 | 南京中衡元环保科技有限公司 | Ammonia nitrogen waste water treatment method and device |
| CN109516604A (en) * | 2018-12-28 | 2019-03-26 | 广州薪光合环保技术有限公司 | The sewage water treatment method of removal of ammonia and nitrogen |
| CN111995105A (en) * | 2020-07-22 | 2020-11-27 | 华南理工大学 | Urea desorption waste liquid ammonia nitrogen emission reduction and waste water recycling equipment and use method |
| CN113735381A (en) * | 2021-09-23 | 2021-12-03 | 嘉应学院 | Treatment method of water body with high ammonia nitrogen content |
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| Publication number | Publication date |
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| CN106277480B (en) | 2020-07-07 |
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