CN106430691A - Method for improving recovery rate of membrane process treated electroplating wastewater film - Google Patents
Method for improving recovery rate of membrane process treated electroplating wastewater film Download PDFInfo
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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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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- 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
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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Abstract
The invention discloses a method for improving the recovery rate of membrane process treated electroplating wastewater film. The method includes a shunting step, a pretreatment step and a comprehensive treatment step. The shunting step includes: subjecting electroplating wastewater to shunting treatment to make copper-containing wastewater, hydrochloric acid pickling waste liquid and cyanogen-containing wastewater enter different pipelines respectively; the pretreatment step includes: pretreatment of copper-containing wastewater: removing large particle suspended matters from the copper-containing wastewater, conducting adsorption treatment on copper ions in the copper-containing wastewater, and discharged copper removed wastewater into a comprehensive regulation tank; and pretreatment of cyanogen-containing wastewater: conducting cyanogen breaking treatment on the cyanogen-containing wastewater, and discharging the cyanogen breaking treated wastewater into the comprehensive regulation tank; and pretreatment of hydrochloric acid pickling waste liquid: subjecting hydrochloric acid pickling waste liquid to oxidation treatment, carrying out adsorption and exchange on the oxidized waste liquid, and recovering hydrochloric acid and ferric salt by-product; and the comprehensive treatment step includes: performing membrane treatment on the wastewater in the comprehensive regulation tank, and transporting the hydrochloric acid to a pickling workshop for reuse. The method provided by the invention can significantly reduce the salt content of wastewater in a membrane system.
Description
Technical field
The present invention relates to electroplating wastewater processing field, specifically one improves the embrane method process electroplating wastewater film rate of recovery
Method.
Background technology
Electroplating industry is highly versatile, uses important processing industry wide, inter-trade, interdepartmental and technique productivity row
Industry.Owing to employing the poisonous and harmful chemicals such as substantial amounts of strong acid, highly basic, heavy metal solution, cyanide, electroplating industry becomes
One of the current whole world three big contaminated industries.According to relevant statistics, the domestic electroplating enterprise of current China has reached more than 20,000
Family, it to the waste water of environmental emission up to 400,000,000 tons, accounts for the 10% of domestic wastewater emission amount, accounts for industrial wastewater discharge every year
The 20% of total amount.The discharge of electroplating wastewater has had resulted in water resource and the loss of a large amount of precious metal.
The common processing method of current Domestic Plating waste water has：Chemical method, electrolysis, ion-exchange and membrane separation process.
Wherein membrane separation technique is because of its technique advance, is in recent years widely used in the treatment for reuse of electroplating wastewater.Will be super
Filter, nanofiltration and reverse osmosis membrane carry out multistage-combination utilization, can effectively improve the reclamation rate of electroplating wastewater.But typically entering
Need before membranous system to pre-process electroplating wastewater, the pretreatment of existing technology heavy metal waste water and pickle liquor,
It is all to add flocculation sediment after substantial amounts of chemical agent, so not only can produce substantial amounts of chemical sludge, increase processing cost,
The important comprehensive wastewater salt content also making to enter membranous system is greatly improved.According to electroplating wastewater saliferous quantitative analysis, its
The salt content of middle pickle liquor just accounts for the 40% of whole comprehensive wastewater salt content.For membranous system, salt content increases it
Osmotic pressure is consequently increased, and in the case that intake pressure keeps constant, net pressure will reduce, and aquifer yield will reduce, thus
Largely have impact on the organic efficiency of membranous system, general employing chemical precipitation mode pre-processes, returning of electroplating wastewater
Yield is only about 75%.
Content of the invention
For the problems referred to above, the present invention provides a kind of raising embrane method improving electroplating waste-water reutilizing rate to process electroplating wastewater film
The method of the rate of recovery.
For reaching above-mentioned purpose, the present invention improve embrane method process the electroplating wastewater film rate of recovery method include separating step,
Pre-treatment step and integrated treatment step；
Separating step：Electroplating wastewater is carried out shunting process, makes copper-containing wastewater, hydrochloric acid pickling waste liquor and cyanide wastewater divide
Do not enter different pipelines；
Pre-treatment step：
The pretreatment of copper-containing wastewater：Remove the bulky grain suspension in copper-containing wastewater, the copper ion in copper-containing wastewater is entered
Waste water after copper removal is entered comprehensive adjustment pond by row adsorption treatment；
The pretreatment of cyanide wastewater：Broken cyanide process is carried out to cyanide wastewater, the waste water processing through broken cyanide is entered synthesis
Regulating reservoir；
The pretreatment of hydrochloric acid pickling waste liquor：Hydrochloric acid pickling waste liquor is carried out oxidation processes, will carry out through snperoxiaized waste liquid
Absorption and exchange, reclaim hydrochloric acid and molysite accessory substance；
Integrated treatment step：Film process is carried out to the waste water in described comprehensive adjustment pond, hydrochloric acid is delivered to Pickling-shop
Reuse.
Further, described hydrochloric acid pickling waste liquor preprocessing process is as follows：Hydrochloric acid pickling waste liquor is inputted oxidation reaction pond,
Oxidation of divalent iron ion in hydrochloric acid pickling waste liquor is become ferric ion；Use the tree equipped with macroporous anion exchange resin
Fat adsorption tower processes through snperoxiaized hydrochloric acid pickling waste liquor, and macroporous anion exchange resin adsorbs FeCl4-complex compound, described tree
The effluent reuse of adsorption tower is in Pickling-shop.
Specifically, the FeCl described macroporous anion exchange resin adsorbing4-complex compound and water reaction regeneration are FeCl3,
Described FeCl3It is back to sewage treatment plant.
Further, the preprocessing process of described copper-containing wastewater is as follows：Active carbon filter is used to carry out copper-containing wastewater
Filter, remove the bulky grain suspension in copper-containing wastewater；Use equipped with chelating resin adsorption tower to remove bulky grain suspension
Copper-containing wastewater process, absorption copper-containing wastewater in copper ion, through adsorption tower process waste water enter comprehensive adjustment pond；
The copper ion of described chelating resin absorption and sulfuric acid carry out regeneration process, produce copper-bath, reclaim copper sulphate.
Specifically, using clear water to rinse the chelating resin processing through regeneration, the water rinsing chelating resin enters comprehensive tune
Joint pond.
Further, the preprocessing process of described cyanide wastewater is as follows：Cyanide wastewater is transported to broken cyanide reaction tank, control
The pH value of cyanide wastewater is more than 10, and ORP value is 250-350mv, carries out a broken cyanide reaction；Control a broken cyanide reacted useless
Water ph value is 6.5-7.5, and ORP value is 600-700mv, carries out secondary broken cyanide reaction.
Further, described film process the nanofiltration membrane treatment that includes carrying out successively, first-stage reverse osmosis film process and two grades anti-
Permeable membrane process.
Specifically, the detailed process of described nanofiltration membrane treatment is as follows：By NF membrane by the big molecule in described waste water and
Divalent ion retains, and the concentrated water drainage after described nanofiltration membrane treatment is entered described comprehensive adjustment pond.
Specifically, by the product hydromining first-stage reverse osmosis film process in described nanofiltration membrane treatment, by described first-stage reverse osmosis
The product water of film reclaims, and processes the dense hydromining two-pass reverse osmosis film that described first-stage reverse osmosis film is processed, by described
The product water that two-pass reverse osmosis film is processed reclaims, and carries out discharging or evaporated by the dense water that described two-pass reverse osmosis film is processed
Reason.
The present invention improves the method that embrane method processes the electroplating wastewater film rate of recovery, by copper-containing wastewater recycling treatment and
Hydrochloric acid pickling waste liquor recycling treatment, reclaims to heavy metal out of electroplating wastewater and waste acid resource, effectively reduces entrance film list
The salt content of the waste water of unit, thus improve operation stability and the rate of recovery of membranous system.
The present invention improves the method that embrane method processes the electroplating wastewater film rate of recovery, and the use and the chemistry that decrease chemical agent are dirty
The generation of mud, uses the pretreatment mode of the present invention, enters the electrical conductivity of comprehensive wastewater of membranous system about at 1000-2000us/
Cm, thus be greatly improved the rate of recovery of electroplating wastewater and the operation stability of membranous system, processed by the invention after, plating is useless
The reclamation rate of water reaches more than 90%, significantly improves economic worth.
Brief description
Fig. 1 is that the present invention improves the process chart that embrane method processes the method for the electroplating wastewater film rate of recovery.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention will be further described.
Embodiment 1
As it is shown in figure 1, improve embrane method process the electroplating wastewater film rate of recovery method include separating step, pre-treatment step with
And integrated treatment step；
Separating step：Electroplating wastewater is carried out shunting process, makes copper-containing wastewater, hydrochloric acid pickling waste liquor and cyanide wastewater divide
Do not enter different pipelines；
Pre-treatment step：
The pretreatment of copper-containing wastewater：Remove the bulky grain suspension in copper-containing wastewater, the copper ion in copper-containing wastewater is entered
Waste water after copper removal is entered comprehensive adjustment pond by row adsorption treatment；
The pretreatment of cyanide wastewater：Broken cyanide process is carried out to cyanide wastewater, the waste water processing through broken cyanide is entered synthesis
Regulating reservoir；
The pretreatment of hydrochloric acid pickling waste liquor：Hydrochloric acid pickling waste liquor is carried out oxidation processes, will carry out through snperoxiaized waste liquid
Absorption and exchange, reclaim hydrochloric acid and molysite accessory substance；
Integrated treatment step：Film process is carried out to the waste water in described comprehensive adjustment pond, hydrochloric acid is delivered to Pickling-shop
Reuse.
The present embodiment improve embrane method process the electroplating wastewater film rate of recovery method, by copper-containing wastewater recycling treatment with
And hydrochloric acid pickling waste liquor recycling treatment, heavy metal out of electroplating wastewater and waste acid resource are reclaimed, effectively reduces entrance film
The salt content of the waste water of unit, thus improve operation stability and the rate of recovery of membranous system.
The present embodiment improves the method that embrane method processes the electroplating wastewater film rate of recovery, to chlorohydric acid pickling waste water and copper-containing wastewater all
It is that the mode using absorption is processed, decrease the use of chemical agent and the generation of chemical sludge, thus be greatly improved
The rate of recovery of electroplating wastewater and the operation stability of membranous system, significantly improve economic worth.
Embodiment 2
On the basis of above-described embodiment, described hydrochloric acid pickling waste liquor preprocessing process is as follows：Hydrochloric acid pickling waste liquor is defeated
Enter oxidation reaction pond, the oxidation of divalent iron ion in hydrochloric acid pickling waste liquor is become ferric ion；Use equipped with macropore cloudy from
The resin adsorption tower of sub-exchange resin processes through snperoxiaized hydrochloric acid pickling waste liquor, and macroporous anion exchange resin adsorbs FeCl4-
Complex compound, the effluent reuse of described tree adsorption tower is in Pickling-shop.
The FeCl of absorption on described macroporous anion exchange resin4-complex compound and water reaction regeneration are FeCl3, described
FeCl3It is back to sewage treatment plant.
The present embodiment improves the method that embrane method processes the electroplating wastewater film rate of recovery, carries out adsorbing and handing over by chlorohydric acid pickling waste water
After alternatively, the hydrochloric acid direct reuse of recovery is to Pickling-shop, and the FeCl regenerating3Also can be with direct reuse, chlorohydric acid pickling waste water
It is not involved in integrated disposal processing, therefore, it is possible to the waste water salt content being substantially reduced in integrated disposal processing.
Embodiment 3
On the basis of above-described embodiment, the preprocessing process of described copper-containing wastewater is as follows：Use active carbon filter pair
Copper-containing wastewater filters, and removes the bulky grain suspension in copper-containing wastewater；Use equipped with the adsorption tower of chelating resin to removal
The copper-containing wastewater of bulky grain suspension is processed, the copper ion in absorption copper-containing wastewater, through the waste water row that adsorption tower is processed
Enter comprehensive adjustment pond；The copper ion of described chelating resin absorption and sulfuric acid carry out regeneration process, produce copper-bath, reclaim sulphur
Acid copper.
Using clear water to rinse the chelating resin processing through regeneration, the water rinsing chelating resin enters comprehensive adjustment pond.
In the present embodiment, the copper ion in copper-containing wastewater is carried out adsorption treatment, decreases the salt content of former copper-containing wastewater,
And regeneration product is copper sulphate, the reclamation rate of copper can be improve directly as products application or sale.
Embodiment 4
The present embodiment is described further with experimental data,
Waste component and flow that experiment uses are as follows：Copper-containing wastewater：100t/d, pickle liquor：1t/d, cyanide wastewater
80t/d.
The method that the raising embrane method of this example processes the film rate of recovery in electroplating wastewater comprises the following steps：
Separating step：Various waste water are shunted, flows into corresponding pretreatment system each via pipeline.
Pre-treatment step：
The pretreatment of copper-containing wastewater：The copper-containing wastewater of 100t/d through collect after, by pump be promoted to active carbon filter with
Remove particle suspensions bigger in former water, subsequently into being filled with 2m3The resin adsorption tower of chelating resin (CH-90), flow velocity
For 4BV/h, absorption water outlet enters comprehensive adjustment pond.Cu2+ when water outlet>During 0.5mg/L setting value, then with the 2% of 2BV sulphur
Acid solution regenerates, and the copper sulphate regenerated liquid obtaining is back to use electroplating workshop, and the 2BV clear water of the chelating resin after regeneration rushes
Washing, flushing water enters comprehensive adjustment pond.
Hydrochloric acid pickling waste liquor pre-processes：The hydrochloric acid pickling waste liquor of 1t/d, after collecting, enters oxidation reaction pond, anti-in oxidation
Ying Chizhong adds H2O2 with the amount of 2L/h, and reacts 2h, and oxidation of divalent iron ion most in spent acid is become ferric ion,
Spent acid after oxidation enters the resin adsorption tower being filled with 2m3 large pore anion resin (D201), and flow velocity is 2BV/h, absorbs
Water circulation is to Pickling-shop.The running water adsorbing saturated resin 3BV regenerates, and obtains FeCl3Accessory substance, as water purification
Flocculant is externally sold.
Cyanide wastewater pre-processes：80t/d cyanide wastewater, after collecting, is beaten to two-stage broken cyanide pond by pump, in one-level broken cyanide pond
The pH of middle control reaction is at 10-11, and ORP controls at 300mv, and the reaction time is 15min, control reaction in two grades of broken cyanide ponds
PH is at 6.5-7.0, and ORP controls at 650mv, and the reaction time is 20min, and two grades of broken cyanide water outlets enter comprehensive adjustment pond.
Integrated treatment step：Pretreated waste water is beaten by pump through accurate filter after the uniform water quality in comprehensive adjustment pond, the water yield
To nanofiltration membrane system, NF membrane can effectively retain big molecule and the major part divalent ion of waste water, to alleviate follow-up reverse osmosis
The processing pressure of permeable membrane, wherein the product water entrance reverse osmosis membrane of NF membrane more than 70% is processed further, the dense water of about 30%
Return to neutralization pond.
The product water of first order reverse osmosis membrane 80% is back to use electroplating workshop as recycle-water, and the dense water of 20% enters into second
Level counter-infiltration concentrates further.
The product water of second level reverse osmosis membrane 70% is back to use electroplating workshop as recycle-water, and the dense water of 30% then enters efficiently
Evaporimeter is evaporated processing.
After using the method for treating electroplating integrated waste water described in this example to run, obtain good operational effect, effectively
The consumption decreasing chemical agent and the energy, reclaim resource while reduce enter membranous system waste water salt content,
It is only 1500us/cm through conductivity of waste water in monitoring comprehensive wastewater pond, so that the rate of recovery of final waste water is 94%, effectively
The rate of recovery that improve membranous system and operation stability.
Embodiment 5
The present embodiment uses another group experimental data to illustrate.
Waste component in the present embodiment and flow are as follows：Copper-containing wastewater：200t/d, pickle liquor：2t/d, cyanide wastewater
100t/d.
The electroplating comprehensive waste water treatment for reuse method of this example comprises the following steps：
Separating step：Various waste water are shunted, flows into corresponding pretreatment system each via pipeline.
Pre-treatment step：
Copper-containing wastewater pre-processes：The copper-containing wastewater of 200t/d, after collecting, is promoted to active carbon filter to go by pump
Except particle suspensions bigger in former water, subsequently into being filled with 4m3The resin adsorption tower of chelating resin (D401), flow velocity is
6BV/h, absorption water outlet enters comprehensive adjustment pond.Cu2+ when water outlet>During 0.5mg/L setting value, then with the 4% of 2BV sulfuric acid
Solution regenerates, and the nickel sulfate regenerated liquid obtaining is back to use electroplating workshop, rinses with 2BV clear water after regeneration, and flushing water enters
Comprehensive adjustment pond.
Chlorohydric acid pickling Wastewater Pretreatment：The hydrochloric acid pickling waste liquor of 2t/d, after collecting, enters oxidation reaction pond, anti-in oxidation
Ying Chizhong adds H2O2 with the amount of 4L/h, and reacts 2h, and oxidation of divalent iron ion most in spent acid is become ferric ion,
Spent acid after oxidation enters and is filled with 3m3The resin adsorption tower of large pore anion resin (D201), flow velocity is 1BV/h, absorbs
Water circulation is to Pickling-shop.The running water adsorbing saturated resin 3BV regenerates, and obtains FeCl3 accessory substance, as water purification
Flocculant is externally sold.
Cyanide wastewater pre-processes：100t/d cyanide wastewater, after collecting, is beaten to two-stage broken cyanide pond by pump, in one-level broken cyanide pond
The pH of middle control reaction is at 10-11, and ORP controls at 300mv, and the reaction time is 20min, control reaction in two grades of broken cyanide ponds
PH is at 6.5-7.0, and ORP controls at 650mv, and the reaction time is 30min, and two grades of broken cyanide water outlets enter comprehensive adjustment pond.
Integrated treatment step：Pretreated waste water is beaten by pump through accurate filter after the uniform water quality in comprehensive adjustment pond, the water yield
To nanofiltration membrane system, NF membrane can effectively retain big molecule and the major part divalent ion of waste water, to alleviate follow-up reverse osmosis
The processing pressure of permeable membrane, wherein the product water entrance reverse osmosis membrane of NF membrane more than 65% is processed further, the dense water of about 35%
Return to neutralization pond.
The product water of first order reverse osmosis membrane 75% is back to use electroplating workshop as recycle-water, and the dense water of 25% enters into second
Level counter-infiltration concentrates further.
The product water of second level reverse osmosis membrane 70% is back to use electroplating workshop as recycle-water, and the dense water of 30% then enters efficiently
Evaporimeter is evaporated processing.
After using the method for treating electroplating integrated waste water described in this example to run, obtain good operational effect, effectively
The consumption decreasing chemical agent, reduce the waste water salt content entering membranous system while the resource of recovery, combine through monitoring
Close conductivity of waste water in wastewater disposal basin and be only 1800us/cm, so that the rate of recovery of final waste water is 92%, effectively raise
The rate of recovery of membranous system and operation stability.
Above, only presently preferred embodiments of the present invention, but protection scope of the present invention is not limited thereto, any is familiar with basis
Those skilled in the art in the technical scope that the invention discloses, the change that can readily occur in or replacement, all should cover
Within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim is defined.
Claims (4)
1. one kind is improved the method that embrane method processes the electroplating wastewater film rate of recovery, it is characterised in that：Including separating step, pretreatment step
Rapid and integrated treatment step；
Separating step：Electroplating wastewater is carried out shunting process, makes copper-containing wastewater, hydrochloric acid pickling waste liquor and cyanide wastewater enter respectively
Enter different pipelines；
Pre-treatment step：
The pretreatment of copper-containing wastewater：Remove the bulky grain suspension in copper-containing wastewater, the copper ion in copper-containing wastewater is inhaled
Waste water after copper removal is entered comprehensive adjustment pond by attached process；
The pretreatment of cyanide wastewater：Broken cyanide process is carried out to cyanide wastewater, the waste water processing through broken cyanide is entered comprehensive adjustment
Pond；
The pretreatment of hydrochloric acid pickling waste liquor：Hydrochloric acid pickling waste liquor is carried out oxidation processes, will adsorb through snperoxiaized waste liquid
And exchange, reclaim hydrochloric acid and molysite accessory substance；
Integrated treatment step：Film process is carried out to the waste water in described comprehensive adjustment pond, hydrochloric acid is delivered to Pickling-shop reuse.
2. improve the method that embrane method processes the electroplating wastewater film rate of recovery as claimed in claim 1, it is characterised in that：The acid of described hydrochloric acid
Wash waste liquid preprocessing process as follows：By hydrochloric acid pickling waste liquor input oxidation reaction pond, by the ferrous iron in hydrochloric acid pickling waste liquor from
Son is oxidized into ferric ion；The resin adsorption tower equipped with macroporous anion exchange resin is used to process through snperoxiaized hydrochloric acid
Pickle liquor, macroporous anion exchange resin adsorbs FeCl4-complex compound, the effluent reuse of described tree adsorption tower is in Pickling-shop.
3. improve the method that embrane method processes the electroplating wastewater film rate of recovery as claimed in claim 2, it is characterised in that：Described macropore is cloudy
The FeCl of absorption on ion exchange resin4-complex compound and water reaction regeneration are FeCl3, described FeCl3It is back to wastewater treatment vehicle
Between.
4. improve the method that embrane method processes the electroplating wastewater film rate of recovery as claimed in claim 1, it is characterised in that：Described cupric gives up
The preprocessing process of water is as follows：Use active carbon filter to filter copper-containing wastewater, remove the bulky grain in copper-containing wastewater
Suspension；Use the adsorption tower equipped with chelating resin to process the copper-containing wastewater removing bulky grain suspension, adsorb cupric
Copper ion in waste water, through the waste water row that adsorption tower is processed.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643288A (en) * | 2009-08-26 | 2010-02-10 | 南京大学 | Method for separating, purifying and recycling waste hydrochloric acid containing iron |
| CN101723558A (en) * | 2009-12-04 | 2010-06-09 | 南京大学 | Integration method for electroplating acid pickle recycling and advanced waste treatment |
| CN103539303A (en) * | 2013-11-15 | 2014-01-29 | 中冶华天工程技术有限公司 | Electroplating wastewater treating and recycling process and system |
| CN105236616A (en) * | 2015-10-15 | 2016-01-13 | 苏州净华水处理设备有限公司 | Electroplating copper-containing sewage treatment and reuse technology |
-
2016
- 2016-06-24 CN CN201610475291.9A patent/CN106430691A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643288A (en) * | 2009-08-26 | 2010-02-10 | 南京大学 | Method for separating, purifying and recycling waste hydrochloric acid containing iron |
| CN101723558A (en) * | 2009-12-04 | 2010-06-09 | 南京大学 | Integration method for electroplating acid pickle recycling and advanced waste treatment |
| CN103539303A (en) * | 2013-11-15 | 2014-01-29 | 中冶华天工程技术有限公司 | Electroplating wastewater treating and recycling process and system |
| CN105236616A (en) * | 2015-10-15 | 2016-01-13 | 苏州净华水处理设备有限公司 | Electroplating copper-containing sewage treatment and reuse technology |
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