CN107381892A - A kind of handling process of high-concentration ammonia nitrogenous wastewater - Google Patents

A kind of handling process of high-concentration ammonia nitrogenous wastewater Download PDF

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Publication number
CN107381892A
CN107381892A CN201710808348.7A CN201710808348A CN107381892A CN 107381892 A CN107381892 A CN 107381892A CN 201710808348 A CN201710808348 A CN 201710808348A CN 107381892 A CN107381892 A CN 107381892A
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ammonia
nitrogen
waste water
wastewater
concentration
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Chinese (zh)
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胡剑锋
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Nantong Italmatch Chemicals Co Ltd
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Nantong Italmatch Chemicals Co Ltd
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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
    • 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
    • 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
    • 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
    • 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
    • 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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  • 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)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention discloses a kind of handling process of high-concentration ammonia nitrogenous wastewater, comprise the following steps：Workshop high ammonia-nitrogen wastewater is pumped into sewage collecting pool, detects ammonia nitrogen in waste water index, according to Testing index, the ammonia nitrogen value of regulation high ammonia-nitrogen wastewater is diluted in OK range by running water；Collecting pit high ammonia-nitrogen wastewater is pumped into micro cell, adds salt acid for adjusting pH value, is aerated in micro cell；After aeration terminates, waste water is pumped into coagulation reaction tank, adds micro aluminium polychloride and polyacrylamide solution while stirring, after waste water outflow is precipitated to coagulative precipitation tank after coagulating, supernatant overflow enters breakpoint chlorination pond；Under agitation, liquor natrii hypochloritis is slowly added into breakpoint chlorination pond, carries out oxidation reaction；Ammonia-nitrogen wastewater treatment technology provided by the invention, this method processing ammonia nitrogen waste water scope of application is significantly extended, the usage amount and processing cost of sodium hypochlorite is greatly reduced, the treatment effeciency of high-concentration ammonia nitrogenous wastewater is significantly improved.

Description

A kind of handling process of high-concentration ammonia nitrogenous wastewater
Technical field
The present invention relates to a kind of waste water treatment process, and in particular to a kind of handling process of high-concentration ammonia nitrogenous wastewater.
Background technology
Light electrolysis sewage disposal technology be by traditional adsorption process at a kind of new type water that electrochemical process is combined Reason technology, micro electrolysis tech are the light electrolysis mistakes for corroding formation in electrolyte solution by the use of iron-carbon granules material as light electrolysis matter Journey handles a kind of electrochemical techniques of waste water, and under certain condition, waste water generates substantial amounts of new life after micro-electrolysis reaction State [H] and Fe2+, there is very high chemism, redox reaction can occur with many components in waste water, destroy some The molecular structure of organic substance, the double bond of some unsaturated chromophoric groups in waste water is broken, chromophoric group is destroyed and is removed Colourity；The material of some bio-refractories is transformed into the material of easy biochemical treatment simultaneously, substantially increase giving birth to for waste water The property changed.Nascent state Fe caused by electrode reaction2+ it is a kind of absorption, contain and the great coagulant of complexing power, can be effective The organic pollution in waste water is adsorbed, in appropriate pH and O2 In the presence of, Fe (OH) can be formed2 With Fe (OH)3 Flocculation sediment. In addition, micro- galvanic cell surrounding electric field effect under, in waste water with polluter existing for colloidal state can in very short time it is complete Into electrophoretic deposition process.Therefore, iron chips micro-electrolysis pre-treating difficultly-degradable industrial wastewater can play adsorption-flocculation, redox and network A variety of effects such as conjunction, can effectively remove colourity, SS and the COD in waste water.Light electrolysis sewage disposal technology is as high-concentration waste The preprocess method of water, the advantage such as have applied widely, high treating effect, operating cost low, therefore be widely used in dyestuff, In the processing of the industry waste water such as plating, petrochemical industry, pharmacy, agricultural chemicals.
Ammonia is the important raw material of industry, extensively should have been obtained in a variety of industries such as pharmacy, food processing, rare-earth smelting With, but simultaneously, excessive ammonia can turn into the important component of environmental pollution, ammonia pollution in sanitary sewage not only be present, and In numerous industries such as rare earth, foaming agent, catalyst, agricultural chemicals, 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., It is percolate caused by garbage loading embeading to make, and wherein the concentration of ammonia is also up to 1000mg/L-10000mg/L.These high-ammonia wastewaters, its Salt content is often also very high, and some salt content are even as high as 16%, significantly larger than the salt content 2%-4% of seawater.It is and existing Requirement of the standard to ammonia in water is very tight, therefore the removal of ammonia nitrogen turns into urgent problem to be solved in high-ammonia wastewater.
The high-ammonia wastewater treatment technology taken at present can be divided into three major types：When biologic treating technique, second, materializing strategy Technology, third, 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 meet emission request, especially biological oxidation process, pass through aerobe Ammoniacal nitrogen is converted into nitrate nitrogen, because oxidation cycle is grown so that water outlet concentration of suspension is high, and mud-water separation is difficult, Er Qiezong Nitrogen difficulty meets demand up to standard.
Materializing strategy technology can be divided into air stripping technology and heating distillation technology again, exactly first pass through pH regulations by waste water In the high ammonium of ionic state be converted into the ammonia of free state or molecular state, then by air stripping or heating rectifying by the ammonia of molecular state from Removed in system.Using stripping technology except ammonia is due to needing substantial amounts of air, thus it is big with power consumption, and stripping tower is easily tied Dirt, easily produce secondary pollution and go out the features such as shipwreck meets to require.Ammonia is removed using heating distillation technology, has recovery ammonia pure The advantages that high is spent, but because the gaseous ammonia and bottom distillate that ammonia still process needs to heat, steams are required for cold to cool down, therefore energy consumption Higher, in ammonia synthesizing industry using more in engineering, but because distillation operation difficulty is big, water outlet typically also needs advanced treating, no Then it is difficult to meet emission request.
The chemical treatment of ammonia nitrogen, be exactly by the ammoniacal nitrogen in waste water, by adding magnesium salts and phosphate, and after pH is adjusted, Ammonium magnesium phosphate is converted into, then ammonium magnesium phosphate is separated from system.The method not only needs to consume substantial amounts of magnesium chloride, phosphorus Hydrochlorate etc., and have much room for improvement in engineering to the clearance of ammonium, there is substantial portion of ammonium salt to remain in system after processing, it is difficult to Meet up to standard or emission request；And another chemical treatment method is break point chlorination, this method is by chlorine or secondary chlorine Sour sodium is passed through in waste water, and NH3-N in waste water is oxidized to the chemical denitrification process of nitrogen.Handle the actual chlorine needed for ammonia nitrogen waste water Tolerance depends on temperature, pH value and ammonia nitrogen concentration.9~10mg chlorine required for aoxidizing every gram of ammonia nitrogen.Break point chlorination is most prominent The advantages of going out is can greatly to reduce the ammonia nitrogen in waste water, while can also reach waste water by correctly controlling chlorine dosage homogenizing To the purpose of sterilization.For chloridising when handling Low Concentration Ammonia Containing Wastewater, handling rate is up to 90-100%, effect stability, not by water temperature Influence, investment is less, but operating cost is somewhat expensive.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to now providing one kind solves existing breakpoint chlorination technique work Skill greatly reduces the usage amount and processing cost of sodium hypochlorite, to highly concentrated handle during ammonia nitrogen waste water the drawbacks of The treatment effeciency of degree ammonia nitrogen waste water has substantially
Raising, developed resource-conserving, the handling process of environmentally friendly high-concentration ammonia nitrogenous wastewater.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of processing work of high-concentration ammonia nitrogenous wastewater Skill, its innovative point are：Comprise the following steps：
（1）Workshop high ammonia-nitrogen wastewater is pumped into sewage collecting pool, detects 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, adds salt acid for adjusting pH value, is aerated in micro cell；
（3）After aeration terminates, waste water is pumped into coagulation reaction tank, aluminium polychloride is added while stirring and polyacrylamide is molten Liquid, after waste water outflow is precipitated to coagulative precipitation tank after coagulating, supernatant overflow enters breakpoint chlorination pond；
（4）Under agitation, liquor natrii hypochloritis is slowly added into breakpoint chlorination pond, carries out oxidation reaction；
Reaction mechanism is as follows：
。
Further, the step（1）In, for raw water ammonia nitrogen index in 40000-120000mg/L, raw water pH indexs are 7- 10, for the running water extension rate at 1-9 times, suitable ammonia nitrogen value scope is 8000-30000mg/L.
Further, the step（2）In, regulation pH value range is between 3-8, the aeration time 2-5 hours.
Further, the step（3）In, polymeric aluminum chlorides solution content exists in 1-9%, polyacrylamide solution content 0.03-0.4%。
Further, the step（4）In, the volume ratio of liquor natrii hypochloritis's dosage and raw water is 1-4.5:1, The oxidation time is 2-5 hours.
Beneficial effects of the present invention are as follows：Ammonia-nitrogen wastewater treatment technology provided by the invention, as light electrolysis combine break Chloridising, compared with existing breakpoint chlorination technology process, this method processing ammonia nitrogen waste water scope of application is significantly extended, greatly The usage amount and processing cost of sodium hypochlorite are reduced, the treatment effeciency of high-concentration ammonia nitrogenous wastewater is significantly improved, The step of it also avoid secondary pollution problem caused by existing process and subsequent treatment, resource-conserving, environment friend are developed The production technology of good type.
Embodiment
The handling process of high-concentration ammonia nitrogenous wastewater of the present invention, comprises the following steps：
（1）Workshop high ammonia-nitrogen wastewater is pumped into sewage collecting pool, detects 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, adds salt acid for adjusting pH value, is aerated in micro cell；
（3）After aeration terminates, waste water is pumped into coagulation reaction tank, aluminium polychloride is added while stirring and polyacrylamide is molten Liquid, after waste water outflow is precipitated to coagulative precipitation tank after coagulating, supernatant overflow enters breakpoint chlorination pond；
（4）Under agitation, liquor natrii hypochloritis is slowly added into breakpoint chlorination pond, carries out oxidation reaction；
Reaction mechanism is as follows：
。
As embodiment, more specifically embodiment is step（1）In, raw water ammonia nitrogen index is in 40000-120000mg/ L, raw water pH index are 7-10, and for running water extension rate at 1-9 times, suitable ammonia nitrogen value scope is 8000-30000mg/L；Step Suddenly（2）In, regulation pH value range is between 3-8, aeration time 2-5 hours；Step（3）In, polymeric aluminum chlorides solution content exists 1-9%, polyacrylamide solution content is in 0.03-0.4%；Step（4）In, the body of liquor natrii hypochloritis's dosage and raw water Product ratio is 1-4.5:1, oxidation time is 2-5 hours.
Embodiment 1
A kind of handling process of high-concentration ammonia nitrogenous wastewater, comprises the following steps：
（1）3 cubes of workshop high ammonia-nitrogen wastewater is pumped into sewage collecting pool, detection ammonia nitrogen in waste water index is 76800mg/L, pH value 7.98；According to Testing index, the ammonia nitrogen value for adding running water regulation high ammonia-nitrogen wastewater is 28500mg/L；
（2）8 cubes of qualified collecting pit high ammonia-nitrogen wastewater will be adjusted and be pumped into micro cell, it is 4 to add salt acid for adjusting pH, in micro- electricity After Xie Chi is aerated 2 hours；
（3）Waste water is pumped into coagulation reaction tank, adds the polymeric aluminum chlorides solution and 0.05% mass of 1% mass concentration while stirring The polyacrylamide solution of concentration, after waste water outflow is precipitated to coagulative precipitation tank after coagulating, supernatant overflow enters folding Point chlorinated chamber；Under agitation, 7.5 cubes of liquor natrii hypochloritis is slowly added into breakpoint chlorination pond, carries out oxidation reaction, 2 hours reaction time, after reaction terminates, sampling detection, ammonia nitrogen value 76mg/L, ammonia nitrogen removal frank 99.7%.
Embodiment 2
A kind of handling process of high-concentration ammonia nitrogenous wastewater, comprises the following steps：
（1）3 cubes of workshop high ammonia-nitrogen wastewater is pumped into sewage collecting pool, detection ammonia nitrogen in waste water index is 49400mg/L, pH value 7.66, according to Testing index, the ammonia nitrogen value for adding running water regulation high ammonia-nitrogen wastewater is 24700mg/L；
（2）About 6 cubes of qualified collecting pit high ammonia-nitrogen wastewater will be adjusted and be pumped into micro cell, it is 4 to add salt acid for adjusting pH, micro- After electrolytic cell is aerated 5 hours；
（3）Waste water is pumped into coagulation reaction tank, adds the polymeric aluminum chlorides solution and 0.2% mass of 5% mass concentration while stirring The polyacrylamide solution of concentration, after waste water outflow is precipitated to coagulative precipitation tank after coagulating, supernatant overflow enters folding Point chlorinated chamber；
（4）Under agitation, 6.5 cubes of liquor natrii hypochloritis is slowly added into breakpoint chlorination pond, carries out oxidation reaction, instead 5 hours between seasonable；After reaction terminates, sampling detection, ammonia nitrogen value 55mg/L, ammonia nitrogen removal frank 99.8%.
Embodiment 3
（1）3 cubes of workshop high ammonia-nitrogen wastewater is pumped into sewage collecting pool, detection ammonia nitrogen in waste water index is 8850mg/L, pH value 7.59, according to Testing index, the ammonia nitrogen value for adding running water regulation high ammonia-nitrogen wastewater is 10000mg/L；
（2）By collecting pit high ammonia-nitrogen wastewater, 3 cubes are pumped into micro cell, and it is 4.24 to add salt acid for adjusting pH, is exposed in micro cell After gas 3 hours；
（3）Waste water is pumped into coagulation reaction tank, adds the polymeric aluminum chlorides solution and 0.12% mass of 2% mass concentration while stirring The polyacrylamide solution of concentration, after waste water outflow is precipitated to coagulative precipitation tank after coagulating, supernatant overflow enters folding Point chlorinated chamber；
（4）Under agitation, 3 cubes of liquor natrii hypochloritis is slowly added into breakpoint chlorination pond, carries out oxidation reaction, reaction Time 2 h, after reaction terminates, sampling detection, ammonia nitrogen value 28mg/L, ammonia nitrogen removal frank 99.7%；
。
From above table, the clearance of embodiment 1, embodiment 2 and the high-concentration ammonia nitrogenous wastewater under embodiment 3 exists More than 99.5%, the treatment effeciency of high-concentration ammonia nitrogenous wastewater is significantly improved.
Ammonia-nitrogen wastewater treatment technology provided by the invention, as light electrolysis combine break point chlorination, with existing breakpoint chlorination Technology process is compared, and is significantly extended this method processing ammonia nitrogen waste water scope of application, is greatly reduced the use of sodium hypochlorite Amount and processing cost, are significantly improved to the treatment effeciency of high-concentration ammonia nitrogenous wastewater, it also avoid existing process generation Secondary pollution problem and subsequent treatment the step of, developed resource-conserving, environmentally friendly production technology.
Above-described embodiment is presently preferred embodiments of the present invention, is not the limitation to technical solution of the present invention, as long as The technical scheme that can be realized on the basis of above-described embodiment without creative work, it is regarded as falling into patent of the present invention Rights protection scope in.

Claims (5)

  1. A kind of 1. handling process of high-concentration ammonia nitrogenous wastewater, it is characterised in that：Comprise the following steps：
    （1）Workshop high ammonia-nitrogen wastewater is pumped into sewage collecting pool, detects 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, adds salt acid for adjusting pH value, is aerated in micro cell；
    （3）After aeration terminates, waste water is pumped into coagulation reaction tank, aluminium polychloride is added while stirring and polyacrylamide is molten Liquid, after waste water outflow is precipitated to coagulative precipitation tank after coagulating, supernatant overflow enters breakpoint chlorination pond；
    （4）Under agitation, liquor natrii hypochloritis is slowly added into breakpoint chlorination pond, carries out oxidation reaction；
    Reaction mechanism is as follows：
    。
  2. A kind of 2. handling process of high-concentration ammonia nitrogenous wastewater according to claim 1, it is characterised in that：The step （1）In, raw water ammonia nitrogen index is in 40000-120000mg/L, and raw water pH indexs are 7-10, and the running water extension rate is in 1-9 Times, suitable ammonia nitrogen value scope is 8000-30000mg/L.
  3. A kind of 3. handling process of high-concentration ammonia nitrogenous wastewater according to claim 1, it is characterised in that：The step （2）In, regulation pH value range is between 3-8, the aeration time 2-5 hours.
  4. A kind of 4. handling process of high-concentration ammonia nitrogenous wastewater according to claim 1, it is characterised in that：The step （3）In, polymeric aluminum chlorides solution mass concentration is 1-9 ‰, and polyacrylamide solution mass concentration is 0.03-0.4 ‰.
  5. A kind of 5. handling process of high-concentration ammonia nitrogenous wastewater according to claim 1, it is characterised in that：The step （4）In, the volume ratio of liquor natrii hypochloritis's dosage and raw water is 1-4.5:1, the oxidation time is that 2-5 is small When.
CN201710808348.7A 2017-09-09 2017-09-09 A kind of handling process of high-concentration ammonia nitrogenous wastewater Pending CN107381892A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112279407A (en) * 2020-10-20 2021-01-29 山东潍坊润丰化工股份有限公司 Method for treating dimethylamine wastewater
CN112624320A (en) * 2020-12-04 2021-04-09 浙江浙能技术研究院有限公司 High-salt high-ammonia nitrogen regeneration wastewater treatment system and control strategy
CN113200632A (en) * 2021-05-13 2021-08-03 舟山市润润环保能源科技有限公司 Method for denitrifying water body entering estuary
CN116002901A (en) * 2022-12-27 2023-04-25 山东新视界生态环境产业发展有限责任公司 Treatment device and treatment method for oily high-ammonia-nitrogen organic wastewater
US20230145108A1 (en) * 2018-08-21 2023-05-11 Evoqua Water Technolgies Llc Methods and Systems for Treating Phosphogypsum-Containing Water

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106277480A (en) * 2016-08-31 2017-01-04 南通联膦化工有限公司 A kind of process technique of high-concentration ammonia nitrogenous wastewater

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106277480A (en) * 2016-08-31 2017-01-04 南通联膦化工有限公司 A kind of process technique of high-concentration ammonia nitrogenous wastewater

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230145108A1 (en) * 2018-08-21 2023-05-11 Evoqua Water Technolgies Llc Methods and Systems for Treating Phosphogypsum-Containing Water
CN112279407A (en) * 2020-10-20 2021-01-29 山东潍坊润丰化工股份有限公司 Method for treating dimethylamine wastewater
CN112624320A (en) * 2020-12-04 2021-04-09 浙江浙能技术研究院有限公司 High-salt high-ammonia nitrogen regeneration wastewater treatment system and control strategy
CN113200632A (en) * 2021-05-13 2021-08-03 舟山市润润环保能源科技有限公司 Method for denitrifying water body entering estuary
CN116002901A (en) * 2022-12-27 2023-04-25 山东新视界生态环境产业发展有限责任公司 Treatment device and treatment method for oily high-ammonia-nitrogen organic wastewater

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Application publication date: 20171124