CN109574351A - Containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method - Google Patents
Containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method Download PDFInfo
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- CN109574351A CN109574351A CN201811464493.9A CN201811464493A CN109574351A CN 109574351 A CN109574351 A CN 109574351A CN 201811464493 A CN201811464493 A CN 201811464493A CN 109574351 A CN109574351 A CN 109574351A
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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
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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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
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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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- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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Abstract
The present invention relates to one kind containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method, comprising: is introduced into the hydrochloric acid in acid recovery system recycling waste water containing sour high ammonia nitrogen and high salt waste water, obtained recovery acid is back to production technology；The depickling raffinate obtained after recovery acid enters coagulating sedimentation system after adding excess iron powder displacement, alkali is added, the high and low metal of complex-precipitation removal occurs, it obtains supernatant and enters stable gaseous state membranous system, precipitating sludge enters obtained dewatered sludge outward transport after sludge concentration and dewatering system is further concentrated, is dehydrated；The supernatant is stablizing gaseous state membranous system using the hydrochloric acid solution of 15-20% as the ammonia nitrogen substances of absorbing liquid recycling waste water, the ammonium chloride solution of recyclable 15-20%, stable gaseous state membranous system water outlet is evaporated crystallization in evaporation and crystallization system and obtains the condensed water and solid salt for reuse simultaneously, to realize resource utilization and zero-emission.
Description
Technical field
The invention belongs to field of industrial waste water treatment, are related to a kind of resource utilization processing containing sour high ammonia nitrogen and high salt waste water
Method.
Background technique
Hydrochloric acid, chloroazotic acid, ammonium salt and ammonium hydroxide are used in many places in the production process of platinum guaze catalyst field, produce acidity in waste water
(content of hydrochloric acid 2%~10% or so), ammonia nitrogen concentration are high (2000~6000mg/L) greatly, total dissolved solid content height (3~
8%), complicated component, processing difficulty is very big, is the problem that wastewater treatment aspect is generally acknowledged both at home and abroad at present.
The main methods of acid-bearing wastewater processing at present have neutralisation, crystallisation etc., have volatile spy in view of it
Property, there are also the new processing methods of some comparisons, such as high-temperature roasting method, Lurgi process etc..
Neutralisation has acidic and alkaline waste water neutralisation and dispensing neutralisation, and advantage is the acid for being suitble to processing more containing metal and impurity
Property waste water, but also have its following shortcoming: firstly, the treatment effect of this method is general, it is not truly realized wanting for zero-emission
It asks, secondly, being needed during processing using a large amount of basic agent, hydrochloric acid and iron also generate a large amount of body refuse.
Spontaneous nucleation method is that pickling waste waters and iron filings steam while entering is allowed to store in sour pond, has entered nitrate anion by pump
With the concentration reaction tank of hydrogen sulfide, is entering crystallization cylinder after chemical action, ferrous sulfate wet feed is added, is centrifuged, dries
Dry and mill sieve, finally shapes；Submerged combustion high temperature crystallization method cardinal principle is that coal gas and air burn, and then makes it
High-temperature flue gas is generated, waste acid water is then injected directly into, moisture is enable to evaporate, frerrous chloride is precipitated in concentrating hydrochloric acid while.It should
The advantages of method, is thermal effect height, and regeneration acid concentration is relatively high, and the transaction solution of plant issue required for the realization of this method
Certainly；And the maximum disadvantage test acid mist of the method is big, needs to use fuel gas, and than relatively hazardous, it is big to be relatively more suitable for treating capacity
Spent acid, it is uneconomical and dangerous to measure small spent acid.Furthermore crystallisation also adjusts acid-freeze crystallization, evaporation and concentration-cooling knot
Crystallization and vapor jet vacuum crystallisation etc., but crystallisation is not so obvious for the processing advantage of acidity of hydrochloric acid waste water.
High-temperature roasting method is a kind of main methods for handling acidity of hydrochloric acid waste water, which can be divided into one-step calcinations again
With evaporative crystallization roasting method.The principle of one-step calcinations is that hydrochloride waste is injected directly into roaster, to make itself and high temperature
Gas carries out mutually adequately contact, makes the HCL and FeCL in waste liquid3Evaporate and decompose, thus recycle hydrochloric acid therein and
The treating capacity of iron oxide, such method is big, very easy, and the rate of recovery of hydrochloric acid is very high, is a kind of relatively good processing
Method is worth coming into operation.And another method, i.e. evaporative crystallization roasting rule are carried out under vacuum conditions by acid waste water
Low-temperature evaporation is carried out, hydrochloric acid and ferrous salt in acid solution is made to obtain adequately separating later and then frerrous chloride is made, then will
Frerrous chloride roasting, finally recycles hydrochloric acid and iron chloride.Roasting method principle is simple, high degree of automation, though this method can recycle
Hydrochloric acid, but, FeCl very big to the corrosivity of equipment pipe3It is easy to be precipitated in evaporation process, easily occluding device.
High-concentration ammonia nitrogenous wastewater processing aspect, current main method have physico-chemical process and biochemical method.Common physico-chemical process has
Blow-off method, break point chlorination, chemical precipitation method, chemical oxidization method.
It is that the inert gases such as air are passed through in water that blow-off method, which removes ammonia nitrogen in water, and gas-liquid two-phase comes into full contact with, and makes to dissolve
Free NH3 in water passes through gas-liquid interface, enters in gas phase, to remove the ammonia nitrogen being dissolved in waste water.In the industry, one
As using inner stuffing stripping tower as gas-liquid contact apparatus, this dramatically improves gas liquid interfacial area.The method work
Skill process is simple, ammonia nitrogen removal effect stability, but stripping efficiency is influenced by a variety of operations factors such as temperature, pH, operates item
Part is not easy to control.
Vaporizing extract process is the difference using NH3 in waste water etc. between the actual concentrations and equilibrium concentration of volatile matters, is led in waste water
Enter gas, make to come into full contact between aqueous vapor two-phase, insoluble gas drives the volatile matter in waste water to enter through gas-liquid interface
It in gas phase, and is further migrated with gas phase, original system material balance is destroyed in stripping process, NH3 is actually dense in gas phase
Degree is dissolved in the free NH3 in waste water and constantly enters gas with steam well below the equilibrium concentration under the operating condition
Xiang Zhong, to achieve the purpose that ammonia nitrogen removal in waste water.Vaporizing extract process is suitable for the ammonia nitrogen waste water of extensive continuous processing high concentration, work
Skill is simple, effect stability, and to ammonia nitrogen removal frank up to 97% or more, removal effect is good.But this method energy consumption is larger, and
The indissolubles substance such as calcium salt, magnesium salts can be brought in stripper into, tower wall scale easily generated reduces column efficiency, influences to operate.
Break point chlorination is that chlorine or sodium hypochlorite are added in waste water, be allowed to react with ammonia nitrogen generate N2 or
HCl can generate a critical point with the increase of chlorine or sodium hypochlorite dosage in waste water, at this moment chlorinty is most in waste water
It is low, and ammonia-nitrogen content goes to zero, which is known as break, if continuing that chlorine is added thereto at this time, the free chlorine contents in water
It can rise, N2 is oxidized to by the ammonia nitrogen in this method waste water and is removed.The processing of the ammonia nitrogen waste water of the low concentration method is imitated
Fruit is good, relatively inexpensive, but ammonia nitrogen waste water higher for the concentration method operating cost is very high, and side product chlorinated organic matter
With chloramines can also secondary pollution be caused to water quality.
The ammonia nitrogen that chemical precipitation method removes in waste water is the ammonia nitrogen concentration reduced in waste water by chemical precipitation.Pass through ammonium
The metal ion such as Me of ion, phosphate anion and certain divalent2+(Mn2+、Mg2+、Zn2+、Ni2+) the insoluble phosphoric acid of reaction generation
Ammonia nitrogen in the method removing waste water of ammonium salt precipitating.The method can be used for the ammonia nitrogen waste water processing of various concentration, not by temperature
Condition limitation, however the high salinity that should be generated in the process can have an impact the activity of microorganism in the processing of subsequent bio method, when
When being lower than the ammonia nitrogen waste water of 25mg/L to concentration for the treatment of, the processing cost of this method is higher.
Furthermore advanced oxidation processes are the novel water treatment technologies occurred in recent years, mainly include that overcritical aquation aoxidizes
Method, photocatalytic oxidation, Wet Catalytic Oxidation Method, electrochemical oxidation process etc..But these methods engineering application cases are less, energy consumption
Height, processing cost are high.
Biochemical method mainly includes activated sludge process, Anaerobic biotreatment method, the processing of Strong oxdiative aerobe method etc..But it is conventional
There are also very big difficulties for Biochemical method high-concentration ammonia nitrogenous wastewater, and such waste water carbon content is extremely low, needs to increase more
Additional carbon increases additional operating cost.
Currently, for the high traditional treatment method handled containing acid, high ammonia-nitrogen wastewater or consuming a large amount of medicament, make big
The substance that measuring can recycle all is disposed off, and generates a large amount of solid waste, is formed secondary pollution, is caused the wave of resource
Take；On the basis of recovery section resource, there is the disadvantages of investment is big, energy consumption is high, and corrosivity is strong.Therefore, to realization
Zero-emission containing sour high ammonia nitrogen and high salt waste water, it is necessary on the basis of free acid therein and ammonia nitrogen are recycled and are utilized,
Current certain products are solved in industrial processes using the insurmountable energy consumption of traditional handicraft is high, of poor quality, yield is low, dirty
The dye problems such as again.
Summary of the invention
It is an object of the invention to provide one for containing deficiency present on sour high ammonia nitrogen and high salt waste water conventional processes
Kind containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method, the process have land occupation less, it is easy to operate,
The low feature of operational and administrative expenses effectively can be recycled and be utilized to the useful component in waste water, to realize waste water zero
The effect of discharge.
For this purpose, the present invention provides following solution:
One kind includes the following steps: containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method
1) acid recovery system is initially entered containing sour high ammonia nitrogen and high salt waste water pass through the salt in diffusion dialysis device recycling waste water
Acid, the diffusion dialysis device pure water are 1:1 with the high ammonia nitrogen and high salt wastewater flow rate ratio containing acid, and acid recovering rate is 85%~90%, are returned
It receives acid and is back to production technology；
2) the depickling raffinate that step 1) obtains enters coagulating sedimentation system after adding excess iron powder displacement, and the coagulation is heavy
Inclined-plate clarifying basin and multimedium multi-filter are equipped in the system of shallow lake, the depickling raffinate through iron replacement is promoted to sloping plate deposition through pump
Pond adds sodium hydroxide and polyacrylamide (PAM) with ferrous ion in depickling raffinate after displacement in real time and reacts complex-precipitation
High and low metal is removed, wherein 11~12, inclined-plate clarifying basin sludge and more medium filter flushing water enter sludge for pH value control
Thickening system is further concentrated, be dehydrated after obtained dewatered sludge outward transport, inclined-plate clarifying basin supernatant enters multimedium mistake
Enter after filter filtering and stablizes gaseous state membranous system；
3) supernatant that step 2) obtains stablize gaseous state membranous system using the hydrochloric acid solution of 15-20% as absorbing liquid and recycle it is useless
The ammonia nitrogen substances of water, recycling obtain the ammonium chloride solution of 15-20%；
4) stablize gaseous state membranous system water outlet evaporation and crystallization system be evaporated crystallization obtain for reuse condensed water and
Solid salt, to realize resource utilization and zero-emission；
It is described containing sour high ammonia nitrogen and high salt waste water be content of hydrochloric acid 2%~10% or so, ammonia nitrogen concentration it is high by 2000~
6000mg/L, the industrial wastewater that total dissolved solid content is 3~8%.
In the above-mentioned technical solutions, the stable gaseous state membranous system is realized by stablizing gaseous state film device, stablizes gas film
Device is preferably made of putamina and hydrophobic hollow fiber film, and hydrophobic hollow fiber membrane material is polypropylene or polytetrafluoroethylene (PTFE)
One or two kinds of mixtures.Further, the evaporative crystallization is one kind of multiple-effect evaporation crystallization and MVR evaporative crystallization.
The present invention also provides the processing system containing sour high ammonia nitrogen and high salt utilization of wastewater resource and zero-emission is realized, this is
System includes the acid recovery system being sequentially arranged, coagulating sedimentation system, stablizes gaseous state membranous system, evaporation and crystallization system, wherein acid returns
The chemicals dosing plant for adding iron powder, the sludge outlet of the coagulating sedimentation system are equipped between receipts system and coagulating sedimentation system
It is connected with sludge concentration and dewatering system, concentration, the dehydration for sludge obtain dewatered sludge outward transport；The acid recovery system uses
Diffusion dialysis device recycles the hydrochloric acid in waste water；The coagulating sedimentation system is equipped with chemicals dosing plant, inclined-plate clarifying basin and multimedium
Multi-filter, by adding alkali to remove the high and low metal ion in depickling waste water；The stable gaseous state membranous system, which uses, stablizes gas film
Device recycles the ammonia nitrogen substances of waste water using hydrochloric acid solution as absorbing liquid.
In the above-mentioned technical solutions, the stable gaseous state film device is made of putamina and hydrophobic hollow fiber film, hydrophobic
Property doughnut membrane material be polypropylene or polytetrafluoroethylene (PTFE) one or two kinds of mixtures.
The evaporation and crystallization system preferably uses one kind of multiple-effect evaporation crystallization apparatus and MVR evaporated crystallization device.
The present invention provides one kind containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method, by containing
Sour high ammonia nitrogen and high salt waste water quality comprehensive analysis, the acid recovery system is using the hydrochloric acid in diffusion dialysis device recycling waste water；
The coagulating sedimentation system is used for the residual night after acid recovery using inclined-plate clarifying basin and multimedium multi-filter by adding alkali to remove
High and low metal ion in depickling waste water；The stable gaseous state membranous system is used for coagulating sedimentation system clarification and effluent using stabilization
Gaseous state film device recycles the ammonia nitrogen substances of waste water using hydrochloric acid as absorbing liquid；The evaporation and crystallization system is used for stablizing gaseous state membrane system
System water outlet is evaporated crystallization and obtains condensed water and solid salt；The sludge concentration and dewatering system is used for dirty to coagulating sedimentation system
Mud is collected, thickening.The processing method have land occupation less, easy to operate, operational and administrative expenses is low, can be in waste water
Useful component is effectively recycled and is utilized, to realize the effect of wastewater zero discharge.Therefore, it provides a kind of containing the high ammonia of acid
Nitrogen high-salt wastewater resource utilization and Zero discharge treatment method can realize the preferable system of social benefit, environmental benefit and economic benefit
One.
Detailed description of the invention
Fig. 1 is the process flow chart of the invention containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method.
Specific embodiment
Below with reference to embodiment, the invention will be further described, but should not be construed aforementioned body range of the present invention only
It is limited to following embodiments.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and used
With means, various replacements and change are made, should all include within the scope of the present invention.
Embodiment 1:
It collects certain noble metal Co., Ltd platinum guaze catalyst production waste water to be handled, be detected, in the waste water being collected into
Content of hydrochloric acid 10% or so, the high 4000mg/L of ammonia nitrogen concentration are mainly contained, the industry that total dissolved solid content is 7% is useless containing acid
Water.
Using the present invention containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method processing, specific processing stream
Journey is as follows: will first collect and through the filtered acid-bearing wastewater of cartridge filter, feeding acid recovery system diffusion dialysis device recycling
Hydrochloric acid in waste water, the diffusion dialysis device use dialysis principle, are that motive force is done with concentration difference, whole device is by diffusion dialysis
Film, fluid proportion plate, stiffening plate, liquid stream sheet frame are formed by combining.Control diffusion dialysis device pure water and the salt waste water of the high ammonia nitrogen and high containing acid
Flow-rate ratio is 1:1, obtains the recovery acid of acidity value 9%, and acid recovering rate is 85%~90%, and recovery acid can be back to production work
Skill.The depickling raffinate that acidity value is 1% enters coagulating sedimentation system after excessive iron replacement, is first promoted to sloping plate deposition through pump
Pond adds sodium hydroxide in real time, so that it with ferrous ion in the depickling raffinate after displacement is reacted complex-precipitation high and low to remove
Metal, sodium hydroxide dosage are added by pH sensor control, and pH value is controlled in 11~12, PAM dosage 2-3mg/L.Tiltedly
Plate sedimentation basin supernatant, which enters after more medium filter filters to enter, stablizes gaseous state membranous system.Coagulating sedimentation system inclined-plate clarifying basin
Sludge and more medium filter flushing water enter sludge condensation case after collecting and are further concentrated, and thickened sludge is pumped into plate through screw rod
The dehydration of frame filter press, obtained dewatered sludge outward transport.Coagulating sedimentation system clarification and effluent, which enters in stable gaseous state film device, to be used
18% hydrochloric acid solution recycles ammonia nitrogen, and ammonia nitrogen rate of recovery > 99% is discharged ammonia nitrogen value < 50ppm, while can be recycled and obtain concentration
Production technology is back to for 17% ammonium chloride solution.Stablize gaseous state film device in the present embodiment by putamina and polypropylene hollow fiber
Film is constituted.Finally stable gaseous state membranous system water outlet enters multiple-effect evaporation crystallization apparatus, and the outward transport of evaporative crystallization product solid salt is disposed,
Obtained condensed water can then be back to production technology.
Claims (6)
1. one kind is containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method, it is characterised in that: including walking as follows
It is rapid:
1) acid recovery system is initially entered containing sour high ammonia nitrogen and high salt waste water pass through the hydrochloric acid in diffusion dialysis device recycling waste water, institute
It states diffusion dialysis device pure water and the flow-rate ratio containing sour high ammonia nitrogen and high salt waste water is 1:1, acid recovering rate is 85%~90%, recycling
Acid is back to production technology；
2) the depickling raffinate that step 1) obtains enters coagulating sedimentation system, the coagulating sedimentation system after adding excess iron powder displacement
Inclined-plate clarifying basin and multimedium multi-filter are equipped in system, the depickling raffinate through iron replacement is promoted to inclined-plate clarifying basin through pump, real
When add alkali and PAM with ferrous ion reacts complex-precipitation and removes high and low metal, wherein pH value control in depickling raffinate after displacement
System 11~12, inclined-plate clarifying basin sludge and more medium filter flushing water enter sludge concentration and dewatering system be further concentrated,
The dewatered sludge outward transport obtained after dehydration, inclined-plate clarifying basin supernatant, which enters after more medium filter filters to enter, stablizes gas film
System；
3) supernatant that step 2) obtains is stablizing gaseous state membranous system using the hydrochloric acid solution of 15-20% as absorbing liquid recycling waste water
Ammonia nitrogen substances, recycling obtain the ammonium chloride solution of 15-20%；
4) stable gaseous state membranous system water outlet is evaporated crystallization in evaporation and crystallization system and obtains the condensed water and solid for reuse
Salt, to realize resource utilization and zero-emission；
Described containing sour high ammonia nitrogen and high salt waste water is content of hydrochloric acid 2%~10% or so, the high 2000~6000mg/L of ammonia nitrogen concentration,
The industrial wastewater that total dissolved solid content is 3~8%.
2. according to claim 1 containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method, feature
It is, the stable gaseous state membranous system is realized by stablizing gaseous state film device, stablizes gaseous state film device preferably by putamina and hydrophobic
Property hollow-fibre membrane constitute, hydrophobic hollow fiber membrane material is one or two kinds of mixtures of polypropylene or polytetrafluoroethylene (PTFE).
3. according to claim 1 containing sour high ammonia nitrogen and high salt utilization of wastewater resource and Zero discharge treatment method, feature
It is, the evaporative crystallization is one kind of multiple-effect evaporation crystallization and MVR evaporative crystallization.
4. a kind of method described in claim 1 handles the processing system containing sour high ammonia nitrogen and high salt waste water, which is characterized in that described
Processing system includes the acid recovery system being sequentially arranged, coagulating sedimentation system, stablizes gaseous state membranous system, evaporation and crystallization system,
The chemicals dosing plant for adding iron powder, the dirt of the coagulating sedimentation system are equipped between middle acid recovery system and coagulating sedimentation system
Mud outlet is connected with sludge concentration and dewatering system, and concentration, the dehydration for sludge obtain dewatered sludge outward transport；The acid recovery system
System is using the hydrochloric acid in diffusion dialysis device recycling waste water；The coagulating sedimentation system be equipped with chemicals dosing plant, inclined-plate clarifying basin and
Multimedium multi-filter, thus by adding alkali to remove the high and low metal ion in depickling waste water；The stable gaseous state membranous system uses
Stablize the ammonia nitrogen substances that gaseous state film device recycles waste water using hydrochloric acid as absorbing liquid.
5. processing system according to claim 4, which is characterized in that the stable gaseous state film device is by putamina and hydrophobicity
Hollow-fibre membrane is constituted, and hydrophobic hollow fiber membrane material is one or two kinds of mixtures of polypropylene or polytetrafluoroethylene (PTFE).
6. processing system according to claim 4, which is characterized in that the evaporated crystallization device is multiple-effect evaporation crystallization
One kind of device and MVR evaporated crystallization device.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111635086A (en) * | 2020-07-14 | 2020-09-08 | 常州时升环境工程科技有限公司 | Zero discharge system for producing ammonium salt from ammonia nitrogen-containing wastewater and treatment process thereof |
| CN113754162A (en) * | 2020-06-01 | 2021-12-07 | 中冶长天国际工程有限责任公司 | Method and system for recovering chloride by crystallizing acidic washing wastewater |
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| CN104291499A (en) * | 2014-11-03 | 2015-01-21 | 昆山市千灯三废净化有限公司 | Disposal method for iron and steel pickling waste water containing hydrochloric acids |
| US20170260066A1 (en) * | 2013-02-22 | 2017-09-14 | NiBru Traka Inc. | Struvite formation by precipitation of ammonia in electrocoagulation process |
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| US20170260066A1 (en) * | 2013-02-22 | 2017-09-14 | NiBru Traka Inc. | Struvite formation by precipitation of ammonia in electrocoagulation process |
| CN103964612A (en) * | 2014-05-22 | 2014-08-06 | 北京赛科康仑环保科技有限公司 | Deaminizing treatment method of medium-concentration and low-concentration ammonia-nitrogen wastewater under high COD (Chemical Oxygen Demand), salt content and heavy metal content |
| CN104291499A (en) * | 2014-11-03 | 2015-01-21 | 昆山市千灯三废净化有限公司 | Disposal method for iron and steel pickling waste water containing hydrochloric acids |
| CN107758960A (en) * | 2017-10-18 | 2018-03-06 | 江苏理工学院 | A kind of processing method of ammonia waste water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113754162A (en) * | 2020-06-01 | 2021-12-07 | 中冶长天国际工程有限责任公司 | Method and system for recovering chloride by crystallizing acidic washing wastewater |
| CN111635086A (en) * | 2020-07-14 | 2020-09-08 | 常州时升环境工程科技有限公司 | Zero discharge system for producing ammonium salt from ammonia nitrogen-containing wastewater and treatment process thereof |
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