CN104058536A - Zero discharge method of stainless steel cold rolling acidic waste water concentrated liquid - Google Patents
Zero discharge method of stainless steel cold rolling acidic waste water concentrated liquid Download PDFInfo
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Abstract
The invention provides a zero discharge method of stainless steel cold rolling acidic waste water concentrated liquid, which orderly comprises the following steps: (1) softening, and coagulating sedimentation; (2) pH adjustment; (3) filtration; (4) membrane distillation, that is, heating the waste water concentrated liquid treated in step (3) to 55-75 DEG C, allowing the waste water concentrated liquid to enter a membrane distillation assembly, wherein the obtained condensed water can be recycled for production; (5) evaporative crystallization, that is, allowing the concentrated liquid discharged after membrane distillation treatment in step (4) to enter an evaporating crystallizer for evaporative crystallization to obtain crystal slurry, heating the crystal slurry in a heating chamber to 95-100 DEG C, allowing the heated crystal slurry to enter a crystallization chamber, boiling the crystal slurry to allow the solution to reach a saturation state, and discharging the generated crystals. The zero discharge method of the invention carries out membrane distillation and evaporative crystallization treatment of concentrated liquid generated by reverse osmosis desalination treatment of stainless steel cold rolling waste water, recycles obtained pure water for production, converts inorganic salt in the concentrated liquid into solids, realizes zero discharge of waste water, and has good social benefit and environment benefit.
Description
Technical field
The invention belongs to water-treatment technology field, be specifically related to a kind of Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution.
Background technology
Steel industry belongs to water resources consumption rich and influential family, and therefore implementing waste water recycling is that iron and steel enterprise's reduction ton steel consumes new water and a ton steel wastewater discharge, implements the important measures that national energy-saving reduces discharging policy.A feature of steel industry waste water is exactly that specific conductivity is high, and most user has certain requirement to specific conductivity.The techniques such as coagulation, precipitation, filtration and the biology that iron and steel enterprise generally adopts at present, chemical treatment do not have removal effect substantially to the solvability mineral ion in water, waste water after treatment can only be back to some occasions not high to water quality requirement, and this has limited the reuse amount of waste water to a great extent.If waste water just can be able to be back to the user of high water quality requirement after desalting treatment reduces specific conductivity, will greatly reduce like this water consumption per ton steel and the ton steel wastewater discharge of iron and steel enterprise.
The more serious iron and steel enterprise of more domestic lacks of water has all built up waste water desalination reuse project as Taiyuan Iron and Steel Co., Tang Gang, Handan Iron and Steel Co etc., but its waste water water source is mostly the recirculated cooling water of the techniques such as iron and steel enterprise's steel-making, steel rolling, the useless electrical conductivity of water of this part is not high, generally below 3000 μ s/cm, hardness is not high yet, so its desalination reuse technology is relatively simple.
Cold rolling wastewater, especially acid waste water are one of waste water of the more difficult reuse of iron and steel enterprise, and it is large that this waste water has change of water quality, specific conductivity and hardness high.The pickling of carbon steel enterprise is mostly chlorohydric acid pickling, and the reclaiming process of hydrochloric acid is comparative maturity also, therefore enters the diluted acid waste water just cleaning of Waste Water Treatment.And for stainless-steel cold-rolling enterprise, its acid cleaning process has determined the complicacy of its cold rolling acid waste water, stainless-steel cold-rolling adopts nitration mixture to clean mostly, comprise nitric acid, sulfuric acid and hydrofluoric acid etc., stainless steel enterprises had generally both been produced stainless steel simultaneously, produce again carbon steel, so also contain hydrochloric acid in waste water.Nitration mixture regeneration system rapidly more complicated, technique neither be very stable, when nitration mixture regeneration system rapidly cisco unity malfunction, part concentrated acid also can enter Waste Water Treatment, this just causes the acidity of waste water very strong, pH is sometimes below 1, now need to add a large amount of calcium hydroxide come in and the acidity of waste water, the hardness that therefore the stainless-steel cold-rolling acid waste water specific conductivity after neutralization and calcium ion produce is all far above the cold rolling acid waste water of carbon steel.For stainless-steel cold-rolling acid waste water, discharge after the treatment process that iron and steel enterprise generally adopts neutralizes exactly, precipitates, filters.
Stainless-steel cold-rolling acid waste water is carried out after desalting treatment, and the qualified water of generation can be back to production, but simultaneously also can generating portion concentrated solution, and than the former water before desalination, in concentrated solution, the content of various ion obtains at double concentrated.Overstandard factor in concentrated solution is mainly nitrate nitrogen, and its content even can be up to more than 10000mg/L.Removing the effective means of nitrate nitrogen is exactly biological denitrification denitrogenation, and denitrification process need to consume a large amount of carbon sources, it is generally acknowledged that in sewage, a BOD5/NO3-N > 3～5 o'clock carbon source is sufficient.In stainless-steel cold-rolling acid waste water concentrated solution, be almost not comprise organic carbon source, therefore needing additional carbon, methyl alcohol is the most frequently used additional carbon.The nitrate nitrogen of every denitrification 1g, need in theory to consume the methyl alcohol of 2.47g, the price of methyl alcohol is roughly at 5500～6000 yuan/ton, if therefore with methyl alcohol as additional carbon, according to nitrate nitrogen concentration 10000mg/L, calculate, the theoretical reagent cost of methyl alcohol is at 136-149 yuan/ton.
Membrane distillation (membrane distillation is called for short MD) is a kind of new membrane isolation technique that development in recent years is got up.Membrane distillation is the membrane sepn process that membrane technique combines with still-process, it take dewatering microporous film as medium, one side of film directly contacts (being called hot side) with the pending solution of heat, and opposite side contacts (being called cold side) with the cold aqueous solution directly or indirectly.In hot side solution, volatile component, in the vaporization of face place, is entered cold side and is condensed into liquid phase by film, and other components are blocked in hot side by hydrophobic membrane, thereby realize the object of mixture separation or purification.
Inorganic salinity right and wrong in stainless-steel cold-rolling acid waste water reverse osmosis concentrated liquid are volatile, and when concentrated solution is heated, water wherein forms water vapor, and while adopting membrane distillation technique, water vapor sees through hydrophobic fenestra, produces pure water after condensation; Liquid phase concentrated solution can not penetrate film and be trapped, and concentrated solution is further concentrated thus, and produce pure water can be for production technique simultaneously.Membrane distillation technique need to need to consume a large amount of energy, but its required energy quality be not high by the whole heating of concentrated solution, when scene has utilizable low-grade heat source as used heat, low-pressure steam etc., can greatly reduce the cost of membrane distillation.
Film distillation technology can be done further concentrating for concentrated solution, but along with the wherein rising of salt concentration, when reaching the saturation solubility of salt, crystallization can occur in change, surface at membrane distillation film forms crystallization, cause the obstruction of film and soak, flux is reduced, producing water water quality deterioration.Therefore when the concentration of salinity approaches saturation solubility, will stop concentrating.
Evaporative crystallization technique is the method that adopts heating, under boiling state, makes moisture in solution or other have volatile solvent gasification and removes, solute quantity in its solution is constant, thereby make solution concentrated, when the concentration of solute surpasses its solubility product, solute is separated out with the form of crystal.When evaporative crystallization technique is used for Waste water concentrating, the distilled water of generation can be back to production, and salt is separated out with the form of solid.Can really realize wastewater zero discharge.
Consult existing patent and documents and materials, also there is no at present the report for stainless-steel cold-rolling acid waste water reverse osmosis concentrated liquid zero-discharge technology aspect.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of stainless-steel cold-rolling acid waste water concentrated solution Zero emission method, the concentrated solution that this Zero emission method produces stainless-steel cold-rolling waste water reverse osmosis desalting treatment, through membrane distillation and evaporative crystallization technique, process, the pure water obtaining is back to production, inorganic salt in concentrated solution are converted into solid, have realized wastewater zero discharge; This Zero emission method has economy and environmental protection double effects simultaneously, has good social benefit and environmental benefit.
Technical solution of the present invention is as follows:
The invention provides a kind of stainless-steel cold-rolling acid waste water concentrated solution Zero emission method, comprise the following steps successively:
(1) softening, coagulating sedimentation, by stainless-steel cold-rolling acid waste water concentrated solution, by sodium carbonate Medicine soften, adds sodium carbonate, and in control reaction tank, Waste water concentrating liquid pH is 9.5～10; In described reaction tank, add again the flocculation agent of 10-50ppm and the coagulant aids of 0-3ppm;
(2) pH regulator, the Waste water concentrating liquid after step (1) is processed regulates pH6～7 with hydrochloric acid;
(3) filter, the Waste water concentrating liquid after step (2) is processed, removes particulate matter wherein after filtration;
(4) membrane distillation, Waste water concentrating liquid after step (3) is processed, be heated to after 55～75 ℃, enter membrane distillation assembly, in membrane distillation component internal, be partly evaporated to water vapor, the hydrophobic distillation film of vapor transmission, by vacuum take-off to condenser, by water vapor condensation, be water of condensation, gained water of condensation can be back to production; Dense water 80%～99.9% after described membrane distillation is circulated to the ingress of membrane distillation assembly, 0.1%～20% discharge;
(5) evaporative crystallization, the dense water that processing is discharged through step (4) membrane distillation enters evaporative crystallizer and carries out evaporative crystallization, obtains magma; Described magma enters heating chamber and heats up after 95～100 ℃, and hot magma enters crystallisation chamber, and boiling, makes solution reach hypersaturated state, produces crystal and discharges.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, preferably, the water coolant that described Waste water concentrating liquid after step (3) is processed is water of condensation by water vapor condensation in as described condenser.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, preferably, described step (4) membrane distillation, using cross 80%～99.9% dense water that the concentrated solution of steam and membrane distillation produce as cooling water condensation, be mixed and heated to after 55～75 ℃, enter membrane distillation assembly, in membrane distillation component internal, be partly evaporated to water vapor, the hydrophobic distillation film of vapor transmission, by vacuum take-off, to condenser, by water vapor condensation, be water of condensation, water of condensation can be back to production; Dense water 80%～99.9% after described membrane distillation is circulated to the ingress of membrane distillation assembly, 0.1%～20% discharge.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, preferably, described step (4) membrane distillation, the Waste water concentrating liquid after step (3) is processed, is heated to after 55～75 ℃, enter membrane distillation assembly, in membrane distillation component internal, be partly evaporated to water vapor, the hydrophobic distillation film of vapor transmission, by air purge to condenser, by water vapor condensation, be water of condensation, gained water of condensation can be back to production; Dense water 80%～99.9% after described membrane distillation is circulated to the ingress of membrane distillation assembly, 0.1%～20% discharge.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, preferably, described step (4) membrane distillation, using cross the dense water of part that the concentrated solution of steam and membrane distillation produce as cooling water condensation, be mixed and heated to after 55～75 ℃, enter membrane distillation assembly, in membrane distillation component internal, be partly evaporated to water vapor, the hydrophobic distillation film of vapor transmission, by air purge, to condenser, by water vapor condensation, be water of condensation, water of condensation can be back to production; Dense water 80%～99.9% after described membrane distillation is circulated to the ingress of membrane distillation assembly, 0.1%～20% discharge.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, preferably, the membrane distillation of described step (4) is selected from vacuum membrane distillation and air and sweeps a kind of in formula membrane distillation.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, preferably, the steam that described step (5) boiling produces mixes the thermal source as heating chamber after compressor compression with heating steam.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, preferably, described step (5) evaporative crystallizer is selected external heating type pump feed evaporator, keeps heating tube to be filled with feed liquid, the flow velocity >=2m/s of feed liquid in pipe.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, preferably, the flocculation agent of described step (1) is selected from aluminium salt and molysite a kind of; Described coagulant aids is selected from polyacrylamide.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, preferably, described step (3) is filtered with filtrate and is selected from one or both in quartz sand and hard coal.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, soften+coagulating sedimentation of described step (1), in reverse osmosis concentrated liquid, contain part calcium ion, for preventing occurring fouling in subsequent film distil process, need to soften processing to concentrated solution.Because the form of the calcium ion in concentrated solution mainly with calcium sulfate exists, belong to permanent hardness.Remove permanent hardness and adopt sodium carbonate Medicine soften, carry out the dosage of feedback control sodium carbonate by the pH in control reaction tank, the pH in reaction tank is controlled at 9.5～10.In softening process, can produce precipitation of calcium carbonate flco, be the effect of settling of strengthening flco, in softening reaction tank, adds flocculation agent and coagulant aids, and flocculation agent can adopt aluminium salt or molysite, and coagulant aids adopts polyacrylamide (PAM).
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, described step (2) pH regulator, for guaranteeing the bating effect of system, pH general control is 9.5～10, the water of high like this pH can bring the disadvantageous effects such as fouling to follow-up membrane distillation treatment system, therefore the pH acid adding of waste water need to be adjusted to 6～7, acid adopts hydrochloric acid.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, described step (3) is filtered, and in the concentrated solution after softening precipitation, can contain some particulate matter, if do not removed, can bring disadvantageous effect to follow-up membrane distillation treatment system.Filtration process can be removed the particulate matter of these suspensions effectively, and filtrate can adopt quartz sand or hard coal, also can adopt quartz sand and hard coal as mixed fillers.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, described step (4) membrane distillation membrane distillation technique adopts vacuum membrane distillation or gas to sweep formula membrane distillation, these two kinds of membrane distillation technique flux are large, and condenser need to be set carry out the steam producing in condensation film still-process, therefore can adopt concentrated solution to carry out condensation to steam, so both reduced the consumption of water of condensation, latent heat while having utilized again vapor condensation and part sensible heat, the demand of thermal source while having reduced heating concentrated solution.
First utilize on-the-spot Low Temperature Steam that condensation is crossed to the dense water of part that the concentrated solution of steam and membrane distillation produce and be mixed and heated to 55～75 ℃, enter membrane distillation assembly, in membrane distillation component internal, be partly evaporated to water vapor, penetrate hydrophobic distillation film, mode by vacuum take-off (vacuum membrane distillation) or air purge (gas is swept formula film and steamed) is to condenser, in condenser, take through softening, coagulating sedimentation, the pretreated reverse osmosis concentrated liquid of filtration is water of condensation as water coolant by water vapor condensation, and water of condensation can be back to production.Dense water section after membrane distillation is circulated to the ingress of membrane distillation assembly, and partial discharge enters follow-up evaporative crystallization and processes.
According to the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution provided by the invention, described step (5) evaporative crystallization
The dense water that membrane distillation produces enters evaporative crystallizer and carries out evaporative crystallization.Evaporative crystallizer adopts external heating type pump feed evaporator.The evaporator heating pipe of the type is filled with feed liquid all the time, does not evaporate and stoped separating out of crystallization in pipe, guarantees the flow velocity >=2m/s of feed liquid in pipe simultaneously, thereby makes crystallization cannot be attached to tube wall.
After the dense water that comes from membrane distillation mixes with the magma that leaves crystallisation chamber bottom, from pumping toward heating chamber.Magma heats up in heating chamber, but does not evaporate.Hot magma seethes with excitement after entering crystallisation chamber, makes solution reach hypersaturated state, so part deposition of solute, on suspension grain surface, grows up crystal.The steam that boiling produces mixes the thermal source as heating chamber after compressor compression with heating steam.Magma as product is discharged from circulation tube, and part recycles as magma retrieval system, and part is discharged system as xln.
Beneficial effect of the present invention:
A kind of stainless-steel cold-rolling acid waste water concentrated solution Zero emission method provided by the invention, the concentrated solution that this Zero emission method produces stainless-steel cold-rolling waste water reverse osmosis desalting treatment, through membrane distillation and evaporative crystallization technique, process, the pure water obtaining is back to production, inorganic salt in concentrated solution are converted into solid, have realized wastewater zero discharge; This Zero emission method has economy and environmental protection double effects simultaneously, has good social benefit and environmental benefit.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of a kind of stainless-steel cold-rolling acid waste water concentrated solution treatment technology provided by the invention.
Embodiment
Below in conjunction with embodiment, the present invention is further elaborated, it will be appreciated by those skilled in the art that described embodiment is only for example, and the present invention is not formed to any restriction.
(1) softening, coagulating sedimentation
First the concentrated solution that comes from reverse osmosis system enters melded system, in softening pond, add sodium carbonate solution, pH is controlled to 9.5～10, while dosing coagulant (dosage 5～30ppm) and coagulant aids (0～3ppm), coagulation, reaction enter settling tank after finishing and carry out mud-water separation.
(2) pH regulator
The water outlet of settling tank is adjusted to 6～7 with hydrochloric acid by pH.
(3) filter
After pH regulator, enter strainer and filter, filtrate can adopt quartz sand, hard coal, or bottom adopts quartz sand, top employing hard coal.
(4) membrane distillation
In membrane distillation assembly, part water is evaporated, and the water vapor of generation sees through distillation film, by vacuumize (vacuum membrane distillation) or purging air (gas is swept formula membrane distillation) by delivery of steam to condenser; Water one side is concentrated simultaneously, and the dense water section of generation is back to the entrance of membrane module after further heating, and part enters evaporative crystallization technique section and continues concentrated.The quantity of reflux of dense water is advisable not produce crystallization in membrane distillation assembly.
The steam that water after filtering enters condenser and membrane distillation generation carries out heat exchange.Steam obtains condensation, as product water, is back to production technique; Filter water outlet simultaneously and obtain part heating.The dense water of part that membrane distillation assembly produces is mixed into interchanger through dense water-circulating pump with the water heating through condenser portion and continues to be heated to the required temperature of membrane distillation assembly (55～75 ℃); Heating steam simultaneously obtains condensation, and the recycling condensing water of generation is in production technique.
(5) evaporative crystallization,
The part magma that the dense water of membrane distillation assembly discharge and evaporative crystallizer promote through magma recycle pump enters heater heats to the required temperature of evaporative crystallization, the thermal source of heating is from the steam of heating steam and evaporative crystallizer generation, the steam that evaporative crystallizer produces mixes with heating steam after vapour compressor compression improves pressure, in the dense water of heating, steam obtains condensation, and water of condensation returns to production technique reuse.
The water outlet of well heater enters evaporative crystallizer, evaporation and crystallization occur herein, and the steam of generation enters vapour compressor, oversaturated solution generation crystallization, form with magma is discharged from bottom, and part magma is used through magma recycle pump reflux cycle as the nucleus of crystallization; Rest part is discharged, as solid waste landfill or do other processing.
A kind of stainless-steel cold-rolling acid waste water concentrated solution Zero emission method provided by the invention, the concentrated solution that this Zero emission method produces stainless-steel cold-rolling waste water reverse osmosis desalting treatment, through membrane distillation and evaporative crystallization technique, process, the pure water obtaining is back to production, inorganic salt in concentrated solution are converted into solid, have realized wastewater zero discharge; This Zero emission method has economy and environmental protection double effects simultaneously, has good social benefit and environmental benefit.
Claims (10)
1. a Zero emission method for stainless-steel cold-rolling acid waste water concentrated solution, comprises the following steps successively:
(1) softening, coagulating sedimentation, by stainless-steel cold-rolling acid waste water concentrated solution, by sodium carbonate Medicine soften, adds sodium carbonate, and in control reaction tank, Waste water concentrating liquid pH is 9.5～10; In described reaction tank, add again the flocculation agent of 10-50ppm and the coagulant aids of 0-3ppm;
(2) pH regulator, the Waste water concentrating liquid after step (1) is processed regulates pH6～7 with hydrochloric acid;
(3) filter, the Waste water concentrating liquid after step (2) is processed, removes particulate matter wherein after filtration;
(4) membrane distillation, Waste water concentrating liquid after step (3) is processed, be heated to after 55～75 ℃, enter membrane distillation assembly, at membrane distillation component internal Waste water concentrating liquid, be partly evaporated to water vapor, the hydrophobic distillation film of vapor transmission, by vacuum take-off to condenser, by water vapor condensation, be water of condensation, gained water of condensation can be back to production; Dense water 80%～99.9% after described membrane distillation is circulated to the ingress of membrane distillation assembly, 0.1%～20% discharge;
(5) evaporative crystallization, the dense water that processing is discharged through step (4) membrane distillation enters evaporative crystallizer and carries out evaporative crystallization, obtains magma; Described magma enters heating chamber and heats up after 95～100 ℃, and hot magma enters crystallisation chamber, and boiling, makes solution reach hypersaturated state, produces crystal and discharges.
2. the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution according to claim 1, is characterized in that, the water coolant that described Waste water concentrating liquid after step (3) is processed is water of condensation by water vapor condensation in as described condenser.
3. the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution according to claim 1, it is characterized in that, described step (4) membrane distillation, using cross 80%～99.9% dense water that the concentrated solution of steam and membrane distillation produce as cooling water condensation, be mixed and heated to after 55～75 ℃, enter membrane distillation assembly, in membrane distillation component internal, be partly evaporated to water vapor, the hydrophobic distillation film of vapor transmission, by vacuum take-off to condenser, by water vapor condensation, be water of condensation, water of condensation can be back to production; Dense water 80%～99.9% after described membrane distillation is circulated to the ingress of membrane distillation assembly, 0.1%～20% discharge.
4. the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution according to claim 1, it is characterized in that, described step (4) membrane distillation, the Waste water concentrating liquid after step (3) is processed, is heated to after 55～75 ℃, enter membrane distillation assembly, in membrane distillation component internal, be partly evaporated to water vapor, the hydrophobic distillation film of vapor transmission, by air purge to condenser, by water vapor condensation, be water of condensation, gained water of condensation can be back to production; Dense water 80%～99.9% after described membrane distillation is circulated to the ingress of membrane distillation assembly, 0.1%～20% discharge.
5. the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution according to claim 1, it is characterized in that, described step (4) membrane distillation, using cross the dense water of part that the concentrated solution of steam and membrane distillation produce as cooling water condensation, be mixed and heated to after 55～75 ℃, enter membrane distillation assembly, in membrane distillation component internal, be partly evaporated to water vapor, the hydrophobic distillation film of vapor transmission, by air purge, to condenser, by water vapor condensation, be water of condensation, water of condensation can be back to production; Dense water 80%～99.9% after described membrane distillation is circulated to the ingress of membrane distillation assembly, 0.1%～20% discharge.
6. the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution according to claim 1, is characterized in that, the membrane distillation of described step (4) is selected from vacuum membrane distillation and air and sweeps a kind of in formula membrane distillation.
7. the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution according to claim 1, is characterized in that, the steam that described step (5) boiling produces mixes the thermal source as heating chamber after compressor compression with heating steam.
8. the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution according to claim 1, it is characterized in that, described step (5) evaporative crystallizer is selected external heating type pump feed evaporator, keeps heating tube to be filled with feed liquid, the flow velocity >=2m/s of feed liquid in pipe.
9. the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution according to claim 1, is characterized in that, the flocculation agent of described step (1) is selected from aluminium salt and molysite a kind of; Described coagulant aids is selected from polyacrylamide.
10. the Zero emission method of stainless-steel cold-rolling acid waste water concentrated solution according to claim 1, is characterized in that, described step (3) is filtered with filtrate and is selected from one or both in quartz sand and hard coal.
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| CN108793542A (en) * | 2017-04-28 | 2018-11-13 | 宝山钢铁股份有限公司 | A kind of method that cold rolling acid waste water cooperates with processing with alkaline waste water |
| CN109850970A (en) * | 2019-03-29 | 2019-06-07 | 珠海市玛斯特五金塑胶制品有限公司 | A kind of nickel system Waste water concentrating processing method and its processing system |
| CN109942107A (en) * | 2017-12-21 | 2019-06-28 | 中国石油化工股份有限公司 | A kind of sofening treatment method of high-salt wastewater |
| CN110316908A (en) * | 2019-07-09 | 2019-10-11 | 上海东振环保工程技术有限公司 | A kind of stainless-steel cold-rolling acid waste water denitrification treatment process |
| CN110655239A (en) * | 2018-06-29 | 2020-01-07 | 宝山钢铁股份有限公司 | Method for treating chromium-containing wastewater |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850635A (en) * | 2006-05-24 | 2006-10-25 | 浙江大学 | High-salt epoxy resin production waste-water film integrated salt recovery and biochemical treatment method |
| WO2006137808A1 (en) * | 2005-06-24 | 2006-12-28 | Nanyang Technological University | Contaminated inflow treatment with membrane distillation bioreactor |
| CN101928087A (en) * | 2009-06-26 | 2010-12-29 | 中国石油化工股份有限公司 | Method for treating high salinity wastewater |
| CN102295378A (en) * | 2010-06-28 | 2011-12-28 | 中国石油化工股份有限公司 | Treatment and recycling method of ammonia nitrogen containing high-salt catalyst wastewater |
| JP2012130882A (en) * | 2010-12-22 | 2012-07-12 | Sumitomo Electric Ind Ltd | Water making system |
| CN102849879A (en) * | 2012-10-11 | 2013-01-02 | 北京机电院高技术股份有限公司 | Treatment technology for recycling reverse osmosis concentrated water |
| CN102936065A (en) * | 2011-08-16 | 2013-02-20 | 中国石油化工股份有限公司 | Method for treating wastewater |
-
2013
- 2013-03-22 CN CN201310095907.6A patent/CN104058536A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006137808A1 (en) * | 2005-06-24 | 2006-12-28 | Nanyang Technological University | Contaminated inflow treatment with membrane distillation bioreactor |
| CN1850635A (en) * | 2006-05-24 | 2006-10-25 | 浙江大学 | High-salt epoxy resin production waste-water film integrated salt recovery and biochemical treatment method |
| CN101928087A (en) * | 2009-06-26 | 2010-12-29 | 中国石油化工股份有限公司 | Method for treating high salinity wastewater |
| CN102295378A (en) * | 2010-06-28 | 2011-12-28 | 中国石油化工股份有限公司 | Treatment and recycling method of ammonia nitrogen containing high-salt catalyst wastewater |
| JP2012130882A (en) * | 2010-12-22 | 2012-07-12 | Sumitomo Electric Ind Ltd | Water making system |
| CN102936065A (en) * | 2011-08-16 | 2013-02-20 | 中国石油化工股份有限公司 | Method for treating wastewater |
| CN102849879A (en) * | 2012-10-11 | 2013-01-02 | 北京机电院高技术股份有限公司 | Treatment technology for recycling reverse osmosis concentrated water |
Cited By (27)
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| CN108328826A (en) * | 2017-01-20 | 2018-07-27 | 宝山钢铁股份有限公司 | A kind of method of cold-rolling pickling wastewater recycling |
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