CN103193338A - Method for simply treating copper-clad aluminum electroplating production wastewater - Google Patents
Method for simply treating copper-clad aluminum electroplating production wastewater Download PDFInfo
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- CN103193338A CN103193338A CN2013101178740A CN201310117874A CN103193338A CN 103193338 A CN103193338 A CN 103193338A CN 2013101178740 A CN2013101178740 A CN 2013101178740A CN 201310117874 A CN201310117874 A CN 201310117874A CN 103193338 A CN103193338 A CN 103193338A
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Abstract
The invention relates to a method for simply treating copper-clad aluminum electroplating production wastewater through mutual combined regulation of wastewater drained in each process section, wherein removal and recovery of heavy metal ions in wastewater are realized by comprehensive methods of decomplexation, neutralization, sedimentation, membrane treatment and the like through solution pH control by means of classified step-by-step treatment according to the characteristics of chemical components of wastewater generated in each process section of copper-clad aluminum production based on an electroplating method and by utilizing chemical reaction principles between the wastewater of different process sections as much as possible; and as a result, the treated water is up to the standard of the reused water, and can be recycled.
Description
Technical field
The present invention relates to a kind of each process section that utilizes and discharge the simple and easy method that the mutual comprehensive adjustment of waste water realizes the wastewater treatment of copper cover aluminum Electroplating Production, belong to the technology for treating industrial waste water field in the green technology.
Technical field
The present invention relates to a kind of each process section that utilizes and discharge the simple and easy method that the mutual comprehensive adjustment of waste water realizes the wastewater treatment of copper cover aluminum Electroplating Production, belong to the technology for treating industrial waste water field in the green technology.
Background technology
The copper cover aluminum structure is to coat a layer thickness copper with one heart and the bimetallic wire that forms on the aluminium bar.Therefore this matrix material the is compound high quality electric conductivity of aluminium, low cost, the low contact resistance of copper and the functionality advantage of high chemical stability be widely used multi-field.It is clad welded method and electrochemical plating that copper cover aluminum prepares the most frequently used, and wherein electrochemical plating are praised highly again because of the low advantage of production cost.But many enterprises that domestic electrochemical plating are produced are in order to save cost for wastewater treatment, and electroplate rinsing wastewater is arbitrarily discharging all, cause serious environmental to pollute like this.
The source that the copper cover aluminum electrochemical plating produce waste water mainly is poaching wastewater and the medium-term and long-term use of production process of each process section or adjusts improper and plating bath that scrap.And the technical process of producing according to the copper cover aluminum electrochemical plating, links such as the process section that relates to mainly contains alkaline etching, soaks zinc, sour dezincify, the pre-copper facing of alkalescence and acid copper-plating, the corresponding waste water composition that produces is: contain aluminum ions alkaline solution of sodium hydroxide, Seignette salt and zine ion, nickel ion, iron ion be the basic solution of complexing existence altogether, nitric acid, the basic solution that organic phospho acid and cupric ion complexing exist, the acidic solution of copper ions.
Waste water for the copper cover aluminum electrochemical plating produce generally uses the method that focuses at present, is about to all Waste Water Centralized and mixes by adjusting the pH value, adds some compounds, and the method by precipitation-flocculation realizes wastewater treatment then.This method may be convenient relatively, but owing to not at the chemical ingredients characteristic of each process section waste water, therefore make waste water treatment efficiency low; Add chemical compound lot and can produce secondary pollution; Handle in the mud that the back produces heavy metal such as ambrose alloy and mix, can't refine, cause the waste of resource; The more important thing is in the solution as metal ions such as copper nickel and Seignette salt or the organic phospho acid form with coordination compound and exist, can not remove these metal ions if simply adopt the method for pH neutralization, precipitation at all, therefore the waste water after making this method handle can not reach emission standard even reuse water standard, directly causes the serious waste of environmental pollution and water resources.
Background technology
The copper cover aluminum structure is to coat a layer thickness copper with one heart and the bimetallic wire that forms on the aluminium bar.Therefore this matrix material the is compound high quality electric conductivity of aluminium, low cost, the low contact resistance of copper and the functionality advantage of high chemical stability be widely used multi-field.It is clad welded method and electrochemical plating that copper cover aluminum prepares the most frequently used, and wherein electrochemical plating are praised highly again because of the low advantage of production cost.But many enterprises that domestic electrochemical plating are produced are in order to save cost for wastewater treatment, and electroplate rinsing wastewater is arbitrarily discharging all, cause serious environmental to pollute like this.
The source that the copper cover aluminum electrochemical plating produce waste water mainly is poaching wastewater and the medium-term and long-term use of production process of each process section or adjusts improper and plating bath that scrap.And the technical process of producing according to the copper cover aluminum electrochemical plating, links such as the process section that relates to mainly contains alkaline etching, soaks zinc, sour dezincify, the pre-copper facing of alkalescence and acid copper-plating, the corresponding waste water composition that produces is: contain aluminum ions alkaline solution of sodium hydroxide, Seignette salt and zine ion, nickel ion, iron ion be the basic solution of complexing existence altogether, nitric acid, the basic solution that organic phospho acid and cupric ion complexing exist, the acidic solution of copper ions.
Waste water for the copper cover aluminum electrochemical plating produce generally uses the method that focuses at present, is about to all Waste Water Centralized and mixes by adjusting the pH value, adds some compounds, and the method by precipitation-flocculation realizes wastewater treatment then.This method may be convenient relatively, but owing to not at the chemical ingredients characteristic of each process section waste water, therefore make waste water treatment efficiency low; Add chemical compound lot and can produce secondary pollution; Handle in the mud that the back produces heavy metal such as ambrose alloy and mix, can't refine, cause the waste of resource; The more important thing is in the solution as metal ions such as copper nickel and Seignette salt or the organic phospho acid form with coordination compound and exist, can not remove these metal ions if simply adopt the method for pH neutralization, precipitation at all, therefore the waste water after making this method handle can not reach emission standard even reuse water standard, directly causes the serious waste of environmental pollution and water resources.
Summary of the invention
Discharge of wastewater causes problem of environmental pollution in the copper cover aluminum electrochemical plating production process in order to solve, improve the efficient of wastewater treatment, reduce cost for wastewater treatment to greatest extent, realize effectively separation and recovery of heavy metal such as copper nickel, and make waste water after treatment realize reuse even reach the industrial discharge standard, the present invention is according to the wastewater produced chemical ingredients characteristic of each process section of electrochemical plating production of copper alclad, adopt the step-by-step processing mode of sorting out, and utilize chemical principle between the different process section waste water as far as possible, control by pH value of solution, adopt contact break, neutralization, precipitation, integrated approachs such as film processing are realized the removal of heavy metal ions in the waste water and are reclaimed, make processing water reach the recovery water supply standard, and can cycling and reutilization.
Above-mentioned technical problem of the present invention is implemented by the following technical programs:
A kind of method of simple and easy processing copper cover aluminum Electroplating Production waste water may further comprise the steps:
The chemical ingredients characteristic of the waste water that produces according to each process section of electrochemical plating production of copper alclad is divided into five classes with it: alkaline etching waste water; Soak zinc waste water; Acid dezincify waste water; The alkalescence pre-plated copper waste water; Acid copper-plating waste water; Corresponding chemical ingredients is: contain aluminum ions alkaline solution of sodium hydroxide, Seignette salt and zine ion, nickel ion, iron ion be the basic solution of complexing existence altogether, nitric acid, the basic solution that organic phospho acid and cupric ion complexing exist, the acidic solution of copper ions.Five class waste water are handled respectively, heavy metal ion in every class waste water is removed and is reclaimed by the form that press filtration gets filter cake, handle the filtrate that obtains and enter and mix centralized pool and treat that film handles and every class waste water is last, the liquid that sees through that film obtains after handling imports in the clear water reuse tank as the rinse water in producing, the concentrated solution that film obtains after handling imports to again to mix waits in the centralized pool that film is handled next time, handles with the solution circulated of accomplishing to mix in the centralized pool;
A. the treatment step for alkaline etching waste water is: alkaline etching waste water is removed the oiliness thing that floats on the liquid level by water-and-oil separator, and the oiliness thing is removed by perfect combustion; Remaining viscous fluid enters reaction tank 1
#, and add the sour stirring reaction of accent pH, between control mixing solutions reaction end pH=1 ~ 3, then by plate and frame(type)filter press 1
#Carry out press filtration, obtain filter cake a and filtrate a, filter cake a reclaims as flocculant product, and filtrate a enters to mix and waits for the film processing in the centralized pool.
Because mainly dividing composition in the viscous fluid is saturated sodium metaaluminate and sodium hydroxide, saturated sodium metaaluminate issues the reaction of unboiled water solution at excessive acidic conditions and generates the polymerization aluminum hydroxide precipitation.Therefore through plate and frame(type)filter press 1
#It is polymerization aluminium hydroxide that press filtration obtains filter cake a, and polymerization aluminium hydroxide reclaims as flocculant product.
B. for the treatment step that soaks zinc waste water be: will soak zinc waste water and import reaction tank 2
#, and add the sour stirring reaction of accent pH, between control mixing solutions reaction end pH=8 ~ 10, by plate and frame(type)filter press 2
#Carry out press filtration, obtain filter cake b and filtrate b, filter cake b reclaims as flocculant product, and filtrate b enters settling tank 1
#, and add the sour stirring reaction of accent pH, behind control mixing solutions reaction end pH=6.5 ~ 7.5, add excessive calcium ion again, then by plate and frame(type)filter press 3
#Carry out press filtration, obtain filter cake c and filtrate c, filter cake c reclaims as flocculant product, and filtrate c enters neutralization tank 1
#
Because the reaction of metal ion and tartrate anion ion and hydroxide ion generates a kind of coordination compound of complexity in the zinc dipping solution, add and transfer pH with after the acid, hydroxide ion can at first react with acid, thereby break the molecular balance that generates coordination compound, make metal ion can not with the tartrate anion ion complexation, under the basic solution environment, nickel ion, iron ion will occur with precipitation of hydroxide.Therefore through plate and frame(type)filter press 2
#It is nickel hydroxide and a spot of bulky ferric hydroxide precipitate that press filtration obtains filter cake b, and the obtain filtrate b of institute is the clear aqueous solution of sodium salt, sylvite and Seignette salt.Continue to add in filtrate b and transfer pH with acid control PH=6.5 ~ 7.5, add excessive calcium ion then, Seignette salt generates calcium tartrate with excessive calcium ion and precipitates removal.Therefore through plate and frame(type)filter press 3
#It is calcium tartrate that press filtration obtains filter cake c, and filtrate c is the aqueous solution of calcium ions.
C. the treatment step for alkaline pre-plated copper waste water is: import alkaline pre-plated copper waste water in the contact break pond and add hydrogen peroxide and carry out the contact break reaction, and then add in the alkaline pre-plated copper waste water after the contact break and transfer pH with acid, control mixing solutions reaction end pH=4 ~ 7 import settling tank 2 with this solution then
#In, and add excessive calcium ion, again by plate and frame(type)filter press 4
#Carry out press filtration, obtain filter cake d and filtrate d, filter cake d reclaims as flocculant product, and filtrate d enters neutralization tank 1
#
Under the contact break effect of hydrogen peroxide, cupric ion and organic phospho acid radical ion generation coordination are dissociated, and then the alkalescence after contact break adds excessive calcium ion in the copper facing waste liquid, the effect of the cupric ion that dissociates out and phosphate anion and calcium ion, the calcium phosphate copper precipitation that reaction generates in advance.Therefore through plate and frame(type)filter press 4
#It is calcium phosphate copper that press filtration obtains filter cake d, and filtrate d is the aqueous solution of calcium ions.
D. the treatment step for acid copper-plating waste water is: acid copper-plating waste water is imported neutralization tank 2
#In and add sodium hydroxide and adjust pH＞7, then by plate and frame(type)filter press 5
#Carry out press filtration, obtain filter cake e and filtrate e, filter cake e reclaims as flocculant product, and filtrate e enters to mix and waits for the film processing in the centralized pool.
The chemical ingredients of acid copper-plating waste water mainly is: the acidic solution of copper ions, add sodium hydroxide solution, and cupric ion is convenient to hydroxide ion reaction production copper hydroxide precipitation.Therefore through plate and frame(type)filter press 5
#It is copper hydroxide that press filtration obtains filter cake e.
E. for entering neutralization tank 1
#The treatment step of interior mixing solutions is: at neutralization tank 1
#Add sodium hydroxide control pH＞7, then by plate and frame(type)filter press 6
#Carry out press filtration, obtain filter cake f and filtrate f, filter cake f reclaims as flocculant product, and filtrate f enters to mix and waits for the film processing in the centralized pool.
Because neutralization tank 1
#In solution mainly be the aqueous solution of calcium ions, therefore add sodium hydroxide and just can react and obtain the calcium hydroxide precipitation.So through plate and frame(type)filter press 6
#It is calcium hydroxide that press filtration obtains filter cake f.
F. for the treatment step that mixes the solution in the centralized pool be: the solution that will mix in the centralized pool imports to the film processing system process several times circular treatment that reverse osmosis-ultrafiltration is formed, concentrated solution after each film is handled enters the interior film next time of waiting for of mixing centralized pool and handles, and sees through liquid as in the importing of the rinse water in the production clear water reuse tank.
By analysis, through chemical constitution in the liquid be: Cu≤2ppm, Ca≤10ppm, K≤15ppm, P≤15ppm, S≤30ppm, Na≤213ppm, Cl≤5ppm meets and produces the rinse water service requirements.
As preferably, described accent pH acid is sour dezincify waste water, hydrochloric acid, sulfuric acid or nitric acid.Hydrochloric acid, sulfuric acid, nitric acid are acid commonly used in the neutralization reaction, can reach identical effect at the processing said process.And the main component of sour dezincify waste water is nitric acid, thus in treating processes, also can reach good effect, but also can waste water reuse, reduce the input of additional substance, reduce processing cost.
As preferably, at reaction tank 1
#, reaction tank 2
#, settling tank 1
#, settling tank 2
#, neutralization tank 1
#, neutralization tank 2
#In also add flocculation agent, its purpose is, makes and precipitates sedimentation faster.
As preferably, described flocculation agent is polyvinyl alcohol (PAM).
In sum, the present invention compared with prior art, the beneficial effect that has is:
1) according to technical process, the waste water that the different process section produces is sorted out step-by-step processing according to the chemical ingredients characteristic, make that like this design of wastewater treatment step is more targeted, improve waste water treatment efficiency.
2) utilize chemical principle between the different process section waste water, by mixing, the pH of control mixed solution precipitates, and directly reaches the purpose of wastewater treatment.Mix the removal that aluminium in the solution just can be realized in the back with sour dezincify waste water as alkaline etching waste water.This sampling technology is easy, has reduced the additional substance input to greatest extent, reduces processing cost.
3) in the whole wastewater treatment process, if transfer pH only to adopt the 3rd class acid dezincify wastewater treatment liquid with acid, the material that adds so has only hydrogen peroxide and calcium salt, and hydrogen peroxide and calcium salt are all removed from solution easily, has therefore avoided the interpolation additional substance to bring secondary pollution problem.
4) in the whole wastewater treatment process, realize that aluminum ion, nickel ion, cupric ion etc. obtain recycling with hydroxide form.Heavy metal in each waste liquid reclaims, and this not only reduces because of discharge process takes the environmental pollution that a large amount of toxic chemical substances and metal cause out of, and has reduced the wasting of resources, saved production cost by recovery.
5) this method is simple to operate, and the water after the processing reaches the reuse standard of Electroplating Production rinse water, more environmental protection.
Description of drawings
Fig. 1 is sewage treatment technology process figure of the present invention.
Embodiment
Below by embodiment, by reference to the accompanying drawings, technical scheme of the present invention is described in further detail:
Embodiment 1: as shown in Figure 1, a kind of method of simple and easy processing copper cover aluminum Electroplating Production waste water, the chemical ingredients characteristic of the waste water that produces according to each process section of electrochemical plating production of copper alclad arranges five waste water discharge openings from production line, the waste water of discharge is respectively: alkaline etching waste water; Soak zinc waste water; Acid dezincify waste water; The alkalescence pre-plated copper waste water; Acid copper-plating waste water; Five class waste water are handled respectively, heavy metal ion in every class waste water is removed and is reclaimed by the form that press filtration gets filter cake, and the filtrate that the processing at last of every class waste water obtains enters wait film processing in the mixing centralized pool, the liquid that sees through that film obtains after handling imports in the clear water reuse tank as the rinse water in producing, and the concentrated solution that film obtains after handling imports to again to mix waits in the centralized pool that film is handled next time;
A. being treated to for alkaline etching waste water: 1 ton of alkaline etching waste water is removed the oiliness thing that floats on the liquid level by water-and-oil separator, and the oiliness thing is removed by perfect combustion; Remaining viscous fluid enters reaction tank 1
#, and add sour dezincify waste water stirring reaction, and utilize the pH Controlling System to control the add-on of sour dezincify waste water automatically, control mixing solutions reaction end pH=1 imports plate and frame(type)filter press 1 with mixing solutions with lift pump then
#Carry out press filtration, obtain filter cake a and filtrate a, filter cake a is that polymerization aluminium hydroxide flocculant product reclaims, and filtrate a enters the interior film of waiting for of mixing centralized pool and handles.
B. for soaking being treated to of zinc waste water: soak zinc waste water with 0.5 ton and import reaction tank 2
#, and add sour dezincify waste water stirring reaction, and utilize the pH Controlling System to control the add-on of sour dezincify waste water automatically, control mixing solutions reaction end pH=8 imports plate and frame(type)filter press 2 with mixing solutions with lift pump then
#Carry out press filtration, obtain filter cake b and filtrate b, filter cake b is nickel hydroxide, recyclable utilization; Filtrate b enters settling tank 1
#, and adding sour dezincify waste water stirring reaction, control mixing solutions reaction end pH=6.5 adds excessive calcium ion, more then by plate and frame(type)filter press 3
#Carry out press filtration, obtain filter cake c and filtrate c, filter cake c is that calcium tartrate reclaims, and filtrate c enters neutralization tank 1
#
C. being treated to for alkaline pre-plated copper waste water: alkaline pre-plated copper waste water is imported in the contact break pond, and the adding hydrogen peroxide carries out the contact break reaction, and then adding sour dezincify waste water in the alkaline pre-plated copper waste water after the contact break, control mixing solutions reaction end pH=4 imports settling tank 2 with this solution then
#In, and add excessive calcium ion, then mixing solutions is imported plate and frame(type)filter press 4 with lift pump
#Carry out press filtration, obtain filter cake d and filtrate d, filter cake d reclaims for calcium phosphate copper, and filtrate d enters neutralization tank 1.
D. being treated to for acid copper-plating waste water: acid copper-plating waste water is imported neutralization tank 2
#In, and add sodium hydroxide adjustment pH＞7, then by plate and frame(type)filter press 5
#Carry out press filtration, obtain filter cake e and filtrate e, filter cake e is that copper hydroxide reclaims, and filtrate e enters the mixing centralized pool and treats the film processing.
E. for entering neutralization tank 1
#Being treated to of interior mixing solutions: at neutralization tank 1
#Add sodium hydroxide control pH＞7, then by plate and frame(type)filter press 6
#Carry out press filtration, obtain filter cake f and filtrate f, filter cake f is that calcium hydroxide reclaims, and filtrate f enters the mixing centralized pool and treats the film processing.
F. for the treatment step that mixes the solution in the centralized pool be: the solution that will mix in the centralized pool imports to the film processing system process several times circular treatment that reverse osmosis-ultrafiltration is formed, concentrated solution after each film is handled enters and mixes centralized pool and treat that film next time handles, and imports in the clear water reuse tank as the rinse water in producing and see through liquid.By analysis, through chemical constitution in the liquid be: Cu≤2ppm, Ca≤10ppm, K≤15ppm, P≤15ppm, S≤30ppm, Na≤213ppm, Cl≤5ppm meets and produces the rinse water service requirements.
In above-mentioned treating processes, precipitate sedimentation quickly in order to make, in throw out, add flocculation agent respectively, as polyvinyl alcohol (PAM).
Embodiment 2: a kind of method of simple and easy processing copper cover aluminum Electroplating Production waste water,
(1) in the processing for alkaline etching waste water, the add-on of controlling sour dezincify waste water makes reaction tank 1
#In mixing solutions reaction end pH=3.
(2) in the processing of soaking zinc waste water, the add-on of controlling sour dezincify waste water makes reaction tank 1
#In mixing solutions reaction end pH=10, the add-on of controlling sour dezincify waste water makes settling tank 1
#In mixing solutions reaction end pH=7.5.
(3) in the processing for alkaline pre-plated copper waste water, the add-on of controlling sour dezincify waste water makes the mixing solutions reaction end pH=7 in the contact break pond.
Other steps are with embodiment 1.
Embodiment 3: a kind of method of simple and easy processing copper cover aluminum Electroplating Production waste water,
(1) in the processing for alkaline etching waste water, the add-on of controlling sour dezincify waste water makes reaction tank 1
#In mixing solutions reaction end pH=2.
(2) in the processing of soaking zinc waste water, the add-on of controlling sour dezincify waste water makes reaction tank 1
#In mixing solutions reaction end pH=9, the add-on of controlling sour dezincify waste water makes settling tank 1
#In mixing solutions reaction end pH=7.
(3) in the processing for alkaline pre-plated copper waste water, the add-on of controlling sour dezincify waste water makes the mixing solutions reaction end pH=5 in the contact break pond.
Other steps are with embodiment 1.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (4)
1. the method for a simple and easy processing copper cover aluminum Electroplating Production waste water,
The chemical ingredients characteristic of the waste water that produces according to each process section of electrochemical plating production of copper alclad is divided into five classes with it: alkaline etching waste water; Soak zinc waste water; Acid dezincify waste water; The alkalescence pre-plated copper waste water; Acid copper-plating waste water; Five class waste water are handled respectively, heavy metal ion in every class waste water is removed and is reclaimed by the form that press filtration gets filter cake, and the filtrate that the processing at last of every class waste water obtains enters wait film processing in the mixing centralized pool, the liquid that sees through that film obtains after handling imports in the clear water reuse tank as the rinse water in producing, the concentrated solution that film obtains after handling imports to the interior film next time of waiting for of mixing centralized pool again and handles, and handles with the solution circulated of accomplishing to mix in the centralized pool;
A. the treatment step for alkaline etching waste water is: alkaline etching waste water is removed the oiliness thing that floats on the liquid level by water-and-oil separator, and the oiliness thing is removed by perfect combustion; Remaining viscous fluid enters reaction tank 1
#, and add the sour stirring reaction of accent pH, between control mixing solutions reaction end pH=1 ~ 3, then by plate and frame(type)filter press 1
#Carry out press filtration, obtain filter cake a and filtrate a, filter cake a reclaims as flocculant product, and filtrate a enters to mix and waits for the film processing in the centralized pool;
B. for the treatment step that soaks zinc waste water be: will soak zinc waste water and import reaction tank 2
#, and add the sour stirring reaction of accent pH, between control mixing solutions reaction end pH=8 ~ 10, by plate and frame(type)filter press 2
#Carry out press filtration, obtain filter cake b and filtrate b, filter cake b reclaims as flocculant product, and filtrate b enters settling tank 1
#, and adding the sour stirring reaction of accent pH, control mixing solutions reaction end pH=6.5 ~ 7.5 add excessive calcium ion, more then by plate and frame(type)filter press 3
#Carry out press filtration, obtain filter cake c and filtrate c, filter cake c reclaims as flocculant product, and filtrate c enters neutralization tank 1
#
C. the treatment step for alkaline pre-plated copper waste water is: alkaline pre-plated copper waste water is imported in the contact break pond, and the adding hydrogen peroxide carries out the contact break reaction, and then add in the alkaline pre-plated copper waste water after the contact break and transfer pH with acid, control mixing solutions reaction end pH=4 ~ 7 import settling tank 2 with this solution then
#In, and add excessive calcium ion, again by plate and frame(type)filter press 4
#Carry out press filtration, obtain filter cake d and filtrate d, filter cake d reclaims as flocculant product, and filtrate d enters neutralization tank 1
#
D. the treatment step for acid copper-plating waste water is: acid copper-plating waste water is imported neutralization tank 2
#In and add sodium hydroxide and adjust pH＞7, then by plate and frame(type)filter press 5
#Carry out press filtration, obtain filter cake e and filtrate e, filter cake e reclaims as flocculant product, and filtrate e enters to mix and waits for the film processing in the centralized pool;
E. for entering neutralization tank 1
#The treatment step of interior mixing solutions is: at neutralization tank 1
#Add sodium hydroxide control pH＞7, then by plate and frame(type)filter press 6
#Carry out press filtration, obtain filter cake f and filtrate f, filter cake f reclaims as flocculant product, and filtrate f enters to mix and waits for the film processing in the centralized pool;
F. for the treatment step that mixes the solution in the centralized pool be: the solution that will mix in the centralized pool imports to the film processing system process several times circular treatment that reverse osmosis-ultrafiltration is formed, concentrated solution after each film is handled enters and mixes centralized pool and treat that film next time handles, and imports in the clear water reuse tank as the rinse water in producing and see through liquid.
2. the method for simple and easy processing copper cover aluminum Electroplating Production waste water according to claim 1 is characterized in that, described accent pH acid is sour dezincify waste water or hydrochloric acid or sulfuric acid or nitric acid.
3. the method for simple and easy processing copper cover aluminum Electroplating Production waste water according to claim 1 is characterized in that, at reaction tank 1
#, reaction tank 2
#, settling tank 1
#, settling tank 2
#, neutralization tank 1
#, neutralization tank 2
#In also add flocculation agent.
4. the method for simple and easy processing copper cover aluminum Electroplating Production waste water according to claim 3 is characterized in that, described flocculation agent is polyvinyl alcohol.
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