CN108358343A - Electroplating sewerage processing method - Google Patents

Electroplating sewerage processing method Download PDF

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Publication number
CN108358343A
CN108358343A CN201810148350.0A CN201810148350A CN108358343A CN 108358343 A CN108358343 A CN 108358343A CN 201810148350 A CN201810148350 A CN 201810148350A CN 108358343 A CN108358343 A CN 108358343A
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China
Prior art keywords
acid solution
amberplex
activated carbon
filtration
molecular sieve
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CN201810148350.0A
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Chinese (zh)
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CN108358343B (en
Inventor
张春晖
胡佳阳
徐钢新
马建成
杨洋
吴军
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Wuhan Marine Machinery Plant Co Ltd
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Wuhan Marine Machinery Plant Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/281Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/42Treatment of water, waste water, or sewage by ion-exchange
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16Nature 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
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

The invention discloses a kind of electroplating sewerage processing method, this method includes:Remove the oil slick on acid solution surface;Use the suspended matter in activated carbon adsorption acid solution;Coarse filtration is carried out to acid solution using the flat strainer of coarse filtration;Refined filtration is carried out to the acid solution Jing Guo coarse filtration using the flat strainer of refined filtration;The acid solution Jing Guo refined filtration is handled using multipole ion exchange membrane, is used for the acid solution through predetermined ratio, the acid solution after being recycled per level-one amberplex, while the acid solution of interception is input to next stage amberplex;The acid solution intercepted to afterbody amberplex using molecular sieve is handled, the acid solution after being recycled.The present invention may make plating pretreatment generate electroplating sewerage recycled and be used entirely, environmental protection and economize on resources.

Description

Electroplating sewerage processing method
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of electroplating sewerage processing method.
Background technology
When pretreatment is electroplated, electroplating sewerage often will produce.The electroplating sewerage that plating pretreatment generates in order to prevent is straight Run in put and pollute the environment, and in order to economize on resources improve electroplating sewerage utility value, need to electroplating sewerage into Row recovery processing.When carrying out electroplating sewerage processing, need to isolate the various heavy metal salts contained in electroplating sewerage.It is existing Electroplating sewerage processing method be typically, using neutralisation treatment and heavy metal ion sedimentation removal electroplating sewerage in heavy metal The metal ion that salt is isolated in a solvent, or using the metal ion in molecular sieve absorption electroplating sewerage.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems:
When removing metal ion by neutralisation treatment and heavy metal ion deposition method, it usually needs thrown into electroplating sewerage Put heavy metal settling agent so that the heavy metal in electroplating sewerage forms the compound (useless solid) not readily dissolved, this kind of processing method When handling a large amount of electroplating sewerages, undoubtedly need to use a large amount of heavy metal settling agent, therefore the processing of electroplating sewerage can be improved Cost;And largely use the cost of molecular sieve absorption electroplating sewerage equally higher, therefore existing electroplating sewerage processing method is difficult To carry out more perfect processing to electroplating sewerage so that the electroplating sewerage that plating pretreatment generates is recycled and is subject to profit entirely With.
Invention content
In order to solve existing technical problem, an embodiment of the present invention provides a kind of electroplating sewerage processing methods.The skill Art scheme is as follows:
An embodiment of the present invention provides a kind of electroplating sewerage processing method,
The electroplating sewerage is the acid solution containing metal ion, which is characterized in that the method includes:
Remove the oil slick on the acid solution surface;
Use the suspended matter in acid solution described in activated carbon adsorption;
Coarse filtration is carried out to the acid solution using the flat strainer of coarse filtration;
Refined filtration is carried out to the acid solution Jing Guo coarse filtration using the flat strainer of refined filtration;
The acid solution Jing Guo refined filtration is handled using multipole ion exchange membrane, ion exchange described in every level-one Film is for the acid solution through predetermined ratio, the acid solution after being recycled, while the acidity of interception is molten Liquid is input to amberplex described in next stage;
The acid solution intercepted to amberplex described in afterbody using molecular sieve is handled, and is recycled Acid solution afterwards.
Further, the sieve pore of the flat strainer of the coarse filtration is round sieve, the sieve pore of the flat strainer of coarse filtration A diameter of 4.75-2.00mm.
Further, the sieve pore of the flat strainer of the refined filtration is round sieve, the sieve pore of the flat strainer of refined filtration A diameter of 1.00-0.15mm.
Further, before the oil slick on the removal acid solution surface, the method further includes:Described in standing Acid solution 24-48 hours.
Further, the oil slick on the removal acid solution surface, including:Oil absorbent material tiling is completely covered on institute Draw acid solution surface oil slick in the surface for stating acid solution.
Further, the suspended matter using in acid solution described in activated carbon adsorption includes:The activated carbon is filled Enter in multiple plastics mesh bags;The multiple plastics mesh bag equipped with the activated carbon is put into the acid solution and continues 24-48 Hour.
Further, the ratio of the quality of the usage amount of the activated carbon and the quality of the acid solution is 0.1%- 0.5%.
Further, described that the acid solution that amberplex described in afterbody intercepts is carried out using molecular sieve Processing, including:Monitor the concentration of the acid solution in the molecular sieve in real time;When concentration sour in the acid solution reaches When to setting range, the acid solution is taken out.
Further, the method further includes:Examine acid in the acid solution of the amberplexes transmissions at different levels Concentration;Sour concentration in the acid solution penetrated according to the amberplexes at different levels, by the ions at different levels Sour concentration redistribution is to setting range in the acid solution that exchange membrane penetrates.
Further, the molecular sieve is alundum (Al2O3) adsorption of metal ions molecular sieve.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is:
The embodiment of the present invention realizes the purpose of removal acid solution surface grease particle by deoiling in acid solution, and Using the suspended matter in activated carbon adsorption acid solution, visible impurity in acid solution is removed by above-mentioned two step, is gone After visible foreign, coarse filtration and refined filtration are carried out to acid solution using the flat strainer of coarse filtration and the flat strainer of refined filtration, passed through The mode of filtering removes the indissoluble substance in solution, meanwhile, acid solution is first passed through by the present invention before being handled by molecular sieve Multipole ion exchanges film process, wherein the acid solution that predetermined ratio is all penetrated per level-one amberplex, after being recycled Acid solution is divided into more parts and penetrates amberplex not at the same level respectively by acid solution, the present invention, avoids penetrating simultaneously single A amberplex and cause amberplex must adsorb or filter effect be deteriorated, the present invention will intercept without multistage from The acid solution of proton exchange processing is adsorbed using molecular sieve, therefore reduces the usage amount of molecular sieve, reduces technique Cost.By the acid solution of above-mentioned processing after carrying out concentration allotment, it can all recycle and be used, the present invention passes through Use to deoil makes operation facilitate with activated carbon adsorption, also by amberplex and molecular sieve coupling processing metal ion, reduces The usage amount of molecular sieve reduces process costs.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings Attached drawing.
Fig. 1 is a kind of flow chart of electroplating sewerage processing method provided in an embodiment of the present invention;
Fig. 2 is the flow chart of another electroplating sewerage processing method provided in an embodiment of the present invention;
Fig. 3 is a kind of acid solution separation schematic diagram of electroplating sewerage processing method provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is described in further detail.
Fig. 1 is a kind of flow chart of electroplating sewerage processing method provided in an embodiment of the present invention, the electroplating sewerage be containing There is the acid solution of metal ion, as shown in Figure 1, this method includes:
Step 101:Remove the oil slick on acid solution surface.
Specifically, the realization method of step 101 can be:Using the oil slick on oil absorbent material removal acid solution surface.
Step 102:Use the suspended matter in activated carbon adsorption acid solution.
Specifically, the putting mode of activated carbon can be once added, can also be by after activated carbon decile according to fixation Period distances are added so that activated carbon fully adsorbs suspended matter, to ensure the adsorption efficiency of activated carbon.
Step 103:Coarse filtration is carried out to acid solution using the flat strainer of coarse filtration.
Wherein, the flat strainer of coarse filtration is used to remove the insoluble matter of remaining larger particles in acid solution.
Step 104:Refined filtration is carried out to the acid solution Jing Guo coarse filtration using the flat strainer of refined filtration.
Wherein, the flat strainer of refined filtration is used to remove the insoluble matter of remaining smaller particle in acid solution.
Step 105:The acid solution Jing Guo refined filtration is handled using multipole ion exchange membrane, per level-one ion exchange Film is used for the acid solution through predetermined ratio, the acid solution after being recycled, while the acid solution of interception being input to Next stage amberplex.
Specifically, the acid solution needed using ion exchange film process can be determined in advance before handling acid solution Volume, then the and multistage series for exchanging processing determines that every level-one needs the solution intercepted according to volume and series Volume.Wherein, interception refers to being not through the part of amberplex.
Wherein, its acidity can be allocated through the acid solution of amberplex and sets usable range, made in plating again With.
Step 106:The acid solution intercepted to afterbody amberplex using molecular sieve is handled, and is recycled Acid solution afterwards.
Specifically, the acid solution after being recycled, which can allocate its acidity, sets usable range, is used in plating again.
The embodiment of the present invention realizes the purpose of removal acid solution surface grease particle by deoiling in acid solution, and Using the suspended matter in activated carbon adsorption acid solution, visible impurity in acid solution is removed by above-mentioned two step, is gone After visible foreign, coarse filtration and refined filtration are carried out to acid solution using the flat strainer of coarse filtration and the flat strainer of refined filtration, passed through The mode of filtering removes the indissoluble substance in solution, meanwhile, acid solution is first passed through by the present invention before being handled by molecular sieve Multipole ion exchanges film process, wherein the acid solution that predetermined ratio is all penetrated per level-one amberplex, after being recycled Acid solution is divided into more parts and penetrates amberplex not at the same level respectively by acid solution, the present invention, avoids penetrating simultaneously single A amberplex and cause amberplex must adsorb or filter effect be deteriorated, the present invention will intercept without multistage from The acid solution of proton exchange processing is adsorbed using molecular sieve, therefore reduces the usage amount of molecular sieve, reduces technique Cost.By the acid solution of above-mentioned processing after carrying out concentration allotment, it can all recycle and be used, the present invention passes through Use to deoil makes operation facilitate with activated carbon adsorption, also by amberplex and molecular sieve coupling processing metal ion (Cu2+、 Fe3+、Cr3+、Zn2+), reduce the usage amount of molecular sieve, reduces process costs.
Fig. 2 is the flow chart of another electroplating sewerage processing method provided in an embodiment of the present invention, and the electroplating sewerage is Acid solution containing metal ion, as shown in Fig. 2, this method includes:
Step 201:Stand acid solution 24-48 hours.
Specifically, acid solution merging sedimentation basin is stood, includes hydrochloric acid and sulfuric acid wherein in acid solution, passes through standing Can by acid solution oil slick and suspended matter there is apparent layering, contribute to the progress of sequential process.
Step 202:Remove the oil slick on the acid solution surface.
In embodiments of the present invention, step 202 may include:Oil absorbent material tiling is completely covered on to the surface of acid solution Draw acid solution surface oil slick.
Wherein, polypropylene non-woven fabric can be used in oil absorbent material.Specifically, whether reach in the oil slick for judging acid solution surface It when removal standard, observes by the naked eye with the presence or absence of elaioleucite fat in acid solution, if naked eyes can not be observed in acid solution There is elaioleucite fatty, then reach oil standard, if being visually observed in acid solution has elaioleucite fatty, not up to removes oil ga(u)ge It is accurate.
Step 203:Use the suspended matter in acid solution described in activated carbon adsorption.
In embodiments of the present invention, step 203 may include:Activated carbon is fitted into multiple plastics mesh bags;It will be equipped with and live Property charcoal multiple plastics mesh bags input acid solution continue 24-48 hours.
Specifically, activated carbon is dispensed using plastics mesh bag, mesh bag activated carbon is invested in to deoil that treated acid molten Liquid.After activated carbon standing adsorption 24-48, activated carbon is taken out.Wherein, activated carbon is lignite base grain active carbon, plastics mesh bag It is made of polypropylene standard plastic net, also, the ratio of the quality of the quality and acid solution of the usage amount of activated carbon is 0.1%-0.5%.In embodiments of the present invention, acid solution quality is 100kg, therefore the usage amount of activated carbon can be chosen for 100-200g。
Step 204:Coarse filtration is carried out to the acid solution using the flat strainer of coarse filtration.
Specifically, use sieve pore for round sieve and the flat strainer pair of coarse filtration of a diameter of 4.75-2.00mm of sieve pore Acid solution carries out coarse filtration.
Wherein, the flat strainer of coarse filtration is made of titanium alloy material, is had good resistance to acid etching, is enhanced flat The stability of plate strainer.
Step 205:Refined filtration is carried out to the acid solution Jing Guo coarse filtration using the flat strainer of refined filtration.
Specifically, use sieve pore for round sieve and the flat strainer pair of refined filtration of a diameter of 1.00-0.15mm of sieve pore Acid solution carries out refined filtration.
By into the excessively thick acid solution for considering processing, all by plate filter screen, after completion essence is considered, observing in acid solution is It is no that there are suspended matters.Essence is considered qualified if not observing in acid solution there are suspended matter, is existed if observing in acid solution Then essence worry is unqualified for suspended matter, wherein the flat strainer of refined filtration is made of titanium alloy material.
Step 206:The acid solution Jing Guo refined filtration is handled using multipole ion exchange membrane, per level-one ion exchange Film is used for the acid solution through predetermined ratio, the acid solution after being recycled, while the acid solution of interception being input to Next stage amberplex.
Specifically, the acid solution using ion exchange film process computed in advance can be needed before handling acid solution Volume, and the multistage series for exchanging processing, can usually choose 3-4 grade (i.e. respectively 3-4 acid solution of interception by 3-4 Secondary ion exchange membrane), in embodiments of the present invention, the volume of the acid solution intercepted every time is all identical, i.e., ions at different levels The volume of the acid solution penetrated in exchange membrane is all identical.
Fig. 3 is a kind of acid solution separation schematic diagram of electroplating sewerage processing method provided in an embodiment of the present invention, such as Fig. 3 It is shown, using the metal ion in 3 grades of ion-exchange treatment acid solutions in the present invention, below by taking Fig. 3 as an example, be specifically described from Proton exchange handles the selection of series and the algorithm of acid solution retention volume can be first according to acid solution when specific implementation Volume determine the series of ion-exchange treatment, when acid solution volume is larger, can be used 5~6 grades, when acid solution body When product is less, 2~3 grades are can be used.3 grades of ion exchange film process acid solutions are used in the embodiment of the present invention.Then again really The ratio of the fixed liquor capacity of interception every time, the specific ratio for intercepting liquor capacity can be found in following table:
As seen from table, when amberplex series is 3, the solution for intercepting acid solution every time is all in total acidic solution 25%.
In embodiments of the present invention, amberplex setting is penetrating in slot, when ion-exchange treatment is embodied, first Acid solution after refined filtration is collected in reservoir, acidity is conveyed through slot 1 to first order amberplex using hydraulic pump Solution, while first order amberplex is delivered to by FCS (Flow control system, flow control system) controls Acid solution volume through slot 1 is the 25% of total acidic liquor capacity, wherein the first amberplex penetrates to be set in slot 1 It is equipped with first order amberplex, it, will be along first after penetrating the first amberplex by the acid solution that hydraulic pump conveys Drainage tube 12 flows into accumulator tank, and remaining 75% acid solution is then delivered to the second level by the first changed course pipeline 11 Amberplex similarly, controls 25% in total acidic solution by FCS and penetrates second level amberplex through in slot 2, Wherein, for the second amberplex through second level amberplex is provided in slot 2, the acid solution conveyed by hydraulic pump is saturating After crossing the second amberplex, it will be flowed into accumulator tank along the second drainage tube 22, then by remaining 50% acid solution Third level amberplex is delivered to through in slot 3 by the second changed course pipeline 21, correspondingly, it is molten that total acidic is controlled by FCS 25% in liquid penetrates third level amberplex, wherein third amberplex is handed over through third level ion is provided in slot 3 Film is changed, the acid solution conveyed by hydraulic pump will be flowed into along third drainage tube 32 and be recycled through after third amberplex In slot, acid solution also surplus 25%, is then conveyed 25% acid solution of the interception by third changed course pipeline 31 at this time Adsorption treatment in next step is carried out to other process positions.
It should be noted that the percent by volume in above-mentioned solution is all hundred on the volume basis of total acid solution Divide ratio.
Wherein, ion exchange polymeric membrane is polymer compound film, and functional component is polyvinylbenzenesulfonic acid, and matrix composition is Polyethylene film and polypropylene non-woven fabric.
Step 207:Examine concentration sour in the acid solution of amberplexes transmissions at different levels;According to amberplexes at different levels Sour concentration in the acid solution of transmission, by concentration redistribution sour in acid solution that amberplexes at different levels penetrate to setting Determine range.
Specifically, when examining concentration sour in the acid solution of amberplexes transmissions at different levels, usable pipette pipettes A small amount of acid solution, such as 1ml acid solutions are measured in liquid pipette, and acid solution is diluted to 100ml, draw dilution In acid solution 10ml injection 250ml conical flasks afterwards, diluted with 50ml demineralized waters, the methyl orange that 2 drops 0.1% are then added refers to Show agent, is titrated to solution in until orange-yellow with 0.5mol/L carbonic acid sodium standard solutions, records consumed 0.5mol/L sodium carbonate The volume of standard solution, it is exactly concentration sour in acid solution to be multiplied by 3.17.
It should be noted that concentration sour in the acid solution that the above method is measured is more accurate, if recycled When it is larger to concentration deviation permissible range sour in restored acid solution, PH test paper may be used and simply examine acid solution In acid-base value.
Wherein, water dilution can be added if inspection is higher to concentration sour in acid solution, continues after dilution using above-mentioned Mode detects until concentration sour in acid solution is allocated to setting range.
Step 208:The acid solution intercepted to amberplex described in afterbody using molecular sieve is handled, Acid solution after being recycled.
The acid solution that afterbody amberplex is intercepted using alundum (Al2O3) adsorption of metal ions molecular sieve into Row processing, the acid solution after being recycled.
It is managed as shown in figure 3, being altered course by third by remaining 25% acid solution of afterbody amberplex Road 31 is delivered in retention liquid bath 4, and 4 bottom of retention liquid bath is equipped with alundum (Al2O3) adsorption of metal ions molecular sieve 5, passes through molecule Sieve 5 has absorbed and filter remaining 25% acid solution.
In a step 208, real time monitoring is put into the concentration of the acid solution in molecular sieve, when concentration sour in acid solution When reaching workable range, acid solution is taken out.
Specifically, method same as described above can be used in the concentration for monitoring acid solution, and this will not be repeated here.
The embodiment of the present invention realizes the purpose of removal acid solution surface grease particle by deoiling in acid solution, and Using the suspended matter in activated carbon adsorption acid solution, visible impurity in acid solution is removed by above-mentioned two step, is gone After visible foreign, coarse filtration and refined filtration are carried out to acid solution using the flat strainer of coarse filtration and the flat strainer of refined filtration, passed through The mode of filtering removes the indissoluble substance in solution, meanwhile, acid solution is first passed through by the present invention before being handled by molecular sieve Multipole ion exchanges film process, wherein the acid solution that predetermined ratio is all penetrated per level-one amberplex, after being recycled Acid solution is divided into more parts and penetrates amberplex not at the same level respectively by acid solution, the present invention, avoids penetrating simultaneously single A amberplex and cause amberplex must adsorb or filter effect be deteriorated, the present invention will intercept without multistage from The acid solution of proton exchange processing is adsorbed using molecular sieve, therefore reduces the usage amount of molecular sieve, reduces technique Cost.By the acid solution of above-mentioned processing after carrying out concentration allotment, it can all recycle and be used, the present invention passes through Use to deoil makes operation facilitate with activated carbon adsorption, also by amberplex and molecular sieve coupling processing metal ion, reduces The usage amount of molecular sieve reduces process costs.
The present invention does not generate any waste liquid in process of production.It is not only environmentally friendly using this method, but also economize on resources.It can make plating Recycling obtains good utilization to the waste liquid generated in technique entirely.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, all in the spirit and principles in the present invention Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of electroplating sewerage processing method, the electroplating sewerage is the acid solution containing metal ion, which is characterized in that institute The method of stating includes:
Remove the oil slick on the acid solution surface;
Use the suspended matter in acid solution described in activated carbon adsorption;
Coarse filtration is carried out to the acid solution using the flat strainer of coarse filtration;
Refined filtration is carried out to the acid solution Jing Guo coarse filtration using the flat strainer of refined filtration;
The acid solution Jing Guo refined filtration is handled using multipole ion exchange membrane, amberplex is used described in every level-one In the acid solution through predetermined ratio, the acid solution after being recycled, while the acid solution of interception is defeated Enter to amberplex described in next stage;
The acid solution intercepted to amberplex described in afterbody using molecular sieve is handled, after being recycled Acid solution.
2. according to the method described in claim 1, it is characterized in that, the sieve pore of the flat strainer of the coarse filtration be round sieve, A diameter of 4.75-2.00mm of the sieve pore of the flat strainer of coarse filtration.
3. according to the method described in claim 2, it is characterized in that, the sieve pore of the flat strainer of the refined filtration be round sieve, A diameter of 1.00-0.15mm of the sieve pore of the flat strainer of refined filtration.
4. according to claim 1-3 any one of them methods, which is characterized in that on the removal acid solution surface Before oil slick, the method further includes:
Stand described acid solution 24-48 hours.
5. according to claim 1-3 any one of them methods, which is characterized in that float on the removal acid solution surface Oil, including:
Draw acid solution surface oil slick in the surface that oil absorbent material tiling is completely covered on to the acid solution.
6. according to claim 1-3 any one of them methods, which is characterized in that described using acid molten described in activated carbon adsorption Suspended matter in liquid includes:
The activated carbon is fitted into multiple plastics mesh bags;
The multiple plastics mesh bag equipped with the activated carbon is put into the acid solution and continues 24-48 hours.
7. according to the method described in claim 6, it is characterized in that, the quality of the usage amount of the activated carbon and the acidity are molten The ratio of the quality of liquid is 0.1%-0.5%.
8. according to claim 1-3 any one of them methods, which is characterized in that described to use molecular sieve to described in afterbody The acid solution of amberplex interception is handled, including:
Monitor the concentration of the acid solution in the molecular sieve in real time;
When concentration sour in the acid solution reaches setting range, the acid solution is taken out.
9. according to claim 1-3 any one of them methods, which is characterized in that the method further includes:
Examine concentration sour in the acid solution of the amberplexes transmissions at different levels;
Sour concentration in the acid solution penetrated according to the amberplexes at different levels, by the ion exchanges at different levels Sour concentration redistribution is to setting range in the acid solution that film penetrates.
10. according to claim 1-3 any one of them methods, which is characterized in that the molecular sieve is alundum (Al2O3) metal Ionic adsorption molecular sieve.
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