CN103374743A - Electroplating system and waste water treatment method - Google Patents
Electroplating system and waste water treatment method Download PDFInfo
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- CN103374743A CN103374743A CN2012101257536A CN201210125753A CN103374743A CN 103374743 A CN103374743 A CN 103374743A CN 2012101257536 A CN2012101257536 A CN 2012101257536A CN 201210125753 A CN201210125753 A CN 201210125753A CN 103374743 A CN103374743 A CN 103374743A
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Abstract
The invention relates to an electroplating system. The electroplating system comprises a first water washing tank, an electroplating tank, a second water washing tank, a third water washing tank, an ion exchanging device and a reverse osmosis device. The ion exchanging device is provided with a tower body and heavy metal selective ion exchanging resin which is stored in the tower body. The tower body is arranged between the second water washing tank and the reverse osmosis device in a connecting manner. The heavy metal selective ion exchanging resin is used for exchanging ions with the washing waste water. A reverse osmosis film is arranged inside the reverse osmosis device and used for carrying out the reverse osmosis treatment on the washing waste water after the ion exchanging to obtain the separated pure water and concentrated water. The reverse osmosis device is provided with a pure water outlet and a concentrated water outlet. The pure water outlet is connected with the third water washing tank and used for conveying the pure water which is produced after the treatment of the reverse osmosis device to the third water washing tank. The concentrated water outlet is connected with the first water washing tank and used for conveying the concentrated water which is produced after the treatment of the reverse osmosis device to the first water washing tank. The invention also relates to a waste water treatment method of the electroplating system.
Description
Technical field
The present invention relates to a kind of electroplating technology, relate in particular to the method for wastewater treatment of a kind of electroplating system and electroplating system.
Background technology
Along with the develop rapidly of electronic industry, seem more and more important as the manufacturing technology of the circuit card of electronic product basic building block.Circuit card generally by copper-clad base plate through cut, hole, electroplate, expose, the series of process such as development, etching, pressing, printing, moulding is made.Specifically can consult the people such as C.H. Steer at Proceedings of the IEEE, " Dielectric characterization of printed circuit board substrates " literary composition that Vol.39, No.2 delivered in (in August, 2002).Wherein, plating is an important manufacture craft of circuit board making, and it mainly uses electroplating system that circuit board surface is carried out selectivity copper facing and in the copper facing of through hole hole wall.Yet the washing waste water that contains the plurality of heavy metal cupric ion that produces in the electroplating process not only brings severe contamination to environment, and causes the loss of plurality of heavy metal resource.
In circuit card factory, too complicated because of the washing waste water source, most of enterprise often adopts physical method that washing waste water is processed.This physical method is to utilize physical action to separate the pollution substance that is suspended state in the waste water.This treating processes does not change the chemical property of material, such as coagulant precipitation.The coagulant precipitation technology refers to the coagulating agent of proper amt (polymerize aluminum chloride, bodied ferric sulfate, cationic polyacrylamide etc.) is dropped in the washing waste water; through fully mixing, reacting; make that small suspended particle and colloidal solid produce mutually cohesion in the waste water; become the flocs unit that particle is large, be easy to sedimentation; removed through precipitation, the waste water after processing through coagulant precipitation then drains into the external world.Yet the waste water after aforesaid method is processed directly drains into the external world, has polluted environment, has also wasted a large amount of water resourcess.
Therefore, be necessary to provide a kind of electroplating system of effectively recycle washing waste water and the method for wastewater treatment of electroplating system.
Summary of the invention
Below the method for wastewater treatment of a kind of electroplating system and electroplating system will be described with embodiment.
A kind of electroplating system, it comprises an electroplating device and sewage treatment equipment.This electroplating device comprises the first washing bath, plating tank, the second washing bath and the 3rd washing bath of successively adjacent setting.Described the first washing bath is used for treating electroplating parts and washes.Described plating tank is used for workpiece is electroplated.Described the second washing bath and the 3rd washing bath are used for the workpiece after electroplating is washed.This sewage treatment equipment comprises ion exchange unit and reverse osmosis equipment.Described ion exchange unit comprises tower body and is contained in the interior heavy metal selective ion exchange resin of described tower body.Described tower body has tower body fluid inlet and tower body liquid outlet.Described tower body fluid inlet links to each other with described the second washing bath.Between described the second washing bath and the tower body fluid inlet the first liquid feed valve is installed.Described tower body liquid outlet is connected with reverse osmosis equipment.Between described tower body liquid outlet and the reverse osmosis equipment the second liquid feed valve is installed.Described heavy metal selective ion exchange resin is used for carrying out ion-exchange with washing waste water.Be provided with reverse osmosis membrane in the described reverse osmosis equipment, be used for that the washing waste water after the ion-exchange is carried out reverse osmosis and process, with pure water and the dense water that obtains to be separated from each other.Described reverse osmosis equipment has a pure water spout and a concentrated stream outlet.Described pure water spout links to each other with described the 3rd washing bath, is used for that described reverse osmosis equipment is processed the rear pure water that produces and is delivered to described the 3rd washing bath.Described concentrated stream outlet links to each other with described the first washing bath, is used for that described reverse osmosis equipment is processed the rear dense water that produces and is delivered to described the first washing bath.
A kind of method of wastewater treatment of electroplating system, it may further comprise the steps: above-mentioned electroplating system is provided; The washing waste water that described the second washing bath is produced injects described tower body; Washing waste water in the tower body is carried out the ion exchange processing, thereby obtain the washing waste water after the ion exchange; Washing waste water after the described ion exchange is injected described reverse osmosis equipment, the washing waste water in the described reverse osmosis equipment is carried out reverse osmosis process, thus pure water and dense water that acquisition is separated from each other; And the pure water that obtains injected described the 3rd washing bath, and the dense water that will obtain injects described the first washing bath.
The electroplating system of the technical program and the method for wastewater treatment of this electroplating system, it utilizes first ion exchange unit and reverse osmosis equipment that washing waste water is processed, the pure water and the dense water that will obtain after then will processing are supplemented to respectively in the 3rd washing bath and the first washing bath, not only can replenish part water constantly for the 3rd washing bath and the first washing bath, improve the utilization ratio of washing waste water, and can effectively reduce the possibility of washing waste water contaminate environment.
Description of drawings
The synoptic diagram of the electroplating system that Fig. 1 provides for the technical program embodiment, it comprises an ion exchange unit.
Fig. 2 is the structural representation of the ion exchange unit among Fig. 1.
The main element nomenclature
| |
100 |
| |
10 |
| |
20 |
| The |
11 |
| The |
12 |
| |
16 |
| The |
13 |
| The |
14 |
| The |
15 |
| |
21 |
| The |
31 |
| The |
32 |
| The first |
40 |
| The second |
41 |
| |
50 |
| The pure |
38 |
| Dense |
39 |
| |
107、131、145、901 |
| The second |
132 |
| The |
133 |
| The |
101 |
| The first |
103 |
| The waste |
105、136 |
| The |
121 |
| The washing |
123 |
| The washing |
125 |
| The |
141、143 |
| |
201 |
| The heavy metal selective |
203 |
| The tower |
2011 |
| |
2012 |
| The tower body |
2013 |
| |
51 |
| |
502 |
| |
503 |
| The reverse |
504 |
| The |
505 |
| The |
507 |
| |
80 |
| The filter |
801 |
| The filter core |
803 |
| |
90 |
| The |
33 |
| The |
903 |
| The buffering |
905 |
| The manipulation of |
17 |
| Manipulation of |
18 |
| The |
34 |
| The 3rd |
42 |
| The |
35 |
| The 4th |
43 |
| The |
19 |
| The |
36 |
| The 5th |
44 |
| The |
37 |
| The 6th |
45 |
| The backwash water |
137 |
| The backwash |
139 |
| |
53 |
| Micron order |
508 |
| Grain active carbon |
509 |
| Compression activated |
510 |
| |
5081、5091、5101 |
| |
5083、5093、5103 |
| The first pipe connecting | 61 |
| The second pipe connecting | 62 |
| The 3rd pipe connecting | 63 |
| The 4th pipe connecting | 64 |
| The overflow pipe connecting | 65 |
Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with drawings and Examples to the electroplating system of the technical program and the method for wastewater treatment of electroplating system.
See also Fig. 1, the technical program preferred embodiment provides a kind of electroplating system 100, the waste water after processing is used for a circuit substrate (not shown) is carried out electroplating processes, and the waste water that produces in the electroplating processes technique processed, so that can be back in the electroplating processes technique.Electroplating system 100 comprises electroplating device 10 and the sewage treatment equipment 20 that links to each other with electroplating device 10.
The first washing bath 11 and the 4th washing bath 12 are all for the circuit substrate before electroplating is washed.The first washing bath 11 has first fluid inlet 101 and first liquid outlet 103.The first fluid inlet 101 links to each other with sewage treatment equipment 20.The first liquid outlet 103 links to each other with a wastewater collection pond (not shown) by waste liquid vent pipe 105, so that the washing waste water in the first washing bath 11 can flow into the wastewater collection pond that links to each other with waste liquid vent pipe 105 by waste liquid vent pipe 105.The 4th washing bath 12 has the 4th fluid inlet 121.The 4th fluid inlet 121 links to each other with washing water supply pool 125 by washing water transfer lime 123, so that the water in the 4th washing bath 12 is carried out supply.Because the water in the 4th washing bath 12 is clean than the water in the first washing bath 11, thereby the 4th have an overflow port 107 between washing bath 12 and the first washing bath 11, so that the water in the 4th washing bath 12 can overflow into the first washing bath 11, replenish part water to give the first washing bath 11.
The second washing bath 13, the 3rd washing bath 14 and the 5th washing bath 15 are all for the circuit substrate after electroplating is washed.The second washing bath 13 has second liquid outlet 132, second fluid inlet 133, waste liquid relief outlet 135, backwash water liquid outlet 137, and backwash water fluid inlet 139.The second liquid outlet 132, the second fluid inlet 133, backwash water liquid outlet 137 and backwash water fluid inlet 139 all link to each other with sewage treatment equipment 20.Waste liquid relief outlet 135 injects the wastewater collection pond that links to each other with waste liquid vent pipe 105 by waste liquid vent pipe 136 with the part washing waste water in the second washing bath 13.The 3rd washing bath 14 has two the 3rd fluid inlets 141 and 143.The 3rd fluid inlet 141 links to each other with sewage treatment equipment 20.Another the 3rd fluid inlet 143 links to each other with washing water supply pool 125 by washing water transfer lime 123, so that the water in the 3rd washing bath 14 is carried out supply.
Because the water in the 3rd washing bath 14 is clean than the water in the 5th washing bath 15, water in the 5th washing bath 15 is clean than the second washing bath 13, thereby second have between an overflow port 131, the 3rd washing bath 14 and the 5th washing bath 15 between washing bath 13 and the 5th washing bath 15 and have an overflow port 145, so that the water that the water in the 3rd washing bath 14 can overflow in the 5th washing bath 15, the five washing baths 15 can overflow into the second washing bath 13.
After circuit substrate is transmitted successively water in the first washing bath 11 and the 4th washing bath 12 and cleans, enter in the plating tank 16 and electroplate.Circuit substrate after the plating is transmitted successively and enters successive process, such as exposure, development, etching, pressing, printing, moulding etc. after water in the second washing bath 13, the 5th washing bath 15 and the 3rd washing bath 14 cleans.
It will be understood by those skilled in the art that between the first washing bath 11 and the 4th washing bath 12 also can be provided with again a washing bath, two washing baths or more washing bath the quality requirements that Main Basis circuit substrate to be cleaned need reach and concrete the setting.Those skilled in the art are further appreciated that between the second washing bath 13 and the 3rd washing bath 14 can also have two washing baths, three washing baths or more washing bath, the quality requirements that mainly need reach according to circuit substrate to be cleaned and concrete the setting.
See also figure Fig. 2, sewage treatment equipment 20 is used for that the washing waste water that the second washing bath 13 produces is carried out purifying regeneration to be processed, and the water behind the purifying regeneration is back to the 3rd washing bath 14 and the first washing bath 11.Sewage treatment equipment 20 comprise ion exchange unit 21, be connected in filter element device 80, the reverse osmosis equipment 50 between the second washing bath 13 and the ion exchange unit 21 and be connected in ion exchange unit 21 and reverse osmosis equipment 50 between dashpot 90.Wherein, the washing waste water elder generation that the second washing bath 13 produces is core apparatus 80 after filtration, then by ion exchange unit 21, enters dashpot 90 again, is back to the 3rd washing bath 14 and the first washing bath 11 finally by crossing reverse osmosis equipment 50.
Particularly, in the filter element device 80 filtering material is installed, is used for the impurity of the washing waste water larger particles in the second washing bath 13 was leached before washing waste water ion switch 21.Filter element device 80 has a filter core fluid inlet 801 and a filter core liquid outlet 803.Filter core fluid inlet 801 links to each other with the second liquid outlet 132 of the second washing bath 13 by the first tubing 31, thereby so that the washing waste waters in the second washing bath 13 successively via in the second liquid outlet 132, the first tubing 31, the filter core fluid inlet 801 injection filter element devices 80.Filter core liquid outlet 803 is connected with ion exchange unit 21 by the second tubing 32.The first liquid feed valve 40 is installed on the second tubing 32, thereby so that the washing waste water in the second washing bath 13 after filter element device 80 filters successively via filter core liquid outlet 803, the second tubing 32 and the first liquid feed valve 40 ion switches 21.
For example, tower body 201 can be the tower of 4L for volume, and heavy metal selective ion exchange resin 203 can be Amberlite IRC 748 resins of imido-oxalic acid (IDA) group, and the volume of heavy metal selective ion exchange resin 203 is 2L.Certainly, heavy metal selective ion exchange resin 203 also can be Polystyrene Triethanol Amine Resin or triethylene tetramine type resin or other heavy metal selective resin.
Tower body liquid outlet 2013 links to each other with reverse osmosis equipment 50 by the 3rd tubing 33 and dashpot 90, injects reverse osmosis equipment 50 washing waste water through heavy metal selective ion exchange resin 203 treated waters.The 3rd tubing 33 is equipped with the second liquid feed valve 41.
Ion exchange unit 21 also is connected with a manipulation of regeneration pond 17 and a wastewater collection pond 19.The 17 interior holdings of manipulation of regeneration pond have manipulation of regeneration liquid 18, and manipulation of regeneration pond 17 links to each other with the tower body fluid inlet 2011 of tower body 201 by the first pipe connecting 61, and wastewater collection pond 19 links to each other with tower body liquid outlet 2013 by the second pipe connecting 62.The first pipe connecting 61 is equipped with the 3rd liquid feed valve 42, the second pipe connectings 62 the 4th liquid feed valve 43 is installed.When heavy metal selective ion exchange resin 203 adsorptive poweies are saturated, for so that heavy metal selective ion exchange resin 203 regenerates to recover its adsorptive power, can close the first liquid feed valve 40, the second liquid feed valve 41, the 5th liquid feed valve 44 and the 6th liquid feed valve 45, and open the 3rd liquid feed valve 42 and the 4th liquid feed valve 43, so that manipulation of regeneration liquid 18 enters internal cavities 2012 by the first pipe connecting 61, the 3rd liquid feed valve 42, tower body fluid inlet 2011, counterweight metal selective ion exchange resin 203 carries out manipulation of regeneration.Manipulation of regeneration liquid 18 can be 5% ~ 20%(volume percent) sulfuric acid or hydrochloric acid, and its flow rates is 4 l/hs ~ 8 l/hs.Preferably, in the present embodiment, manipulation of regeneration liquid 18 is 10% sulfuric acid, and its flow velocity is 6 l/hs.Ion exchange reaction can occur with heavy metal selective ion exchange resin 203 in manipulation of regeneration liquid 18, removes from heavy metal selective ion exchange resin 203 with the cupric ion that will be adsorbed on the heavy metal selective ion exchange resin 203.Occur to carry the manipulation of regeneration liquid 18 of cupric ion successively via tower body liquid outlet 2013, the 4th liquid feed valve 43 and the second pipe connecting 62 injection wastewater collection ponds 19 after the ion exchange reaction, in order to carrying out subsequent disposal, for example refill plating tank 16 or concentrate or discard.
It will be appreciated by those skilled in the art that, between manipulation of regeneration pond 17 and the 3rd liquid feed valve 42, also can have high-pressure pump between the 4th liquid feed valve 43 and the wastewater collection pond 19, so that can must inject easilier corresponding tower body 201 and wastewater collection pond 19 via the manipulation of regeneration liquid 18 in the manipulation of regeneration pond 17 and the manipulation of regeneration liquid 18 that carries cupric ion.
Preferably, the tower body liquid outlet 2013 of tower body 201 also links to each other with the backwash water liquid outlet 137 of the second washing bath 13 by the 3rd pipe connecting 63, and the tower body fluid inlet 2011 of tower body 201 also links to each other with the backwash water fluid inlet 139 of the second washing bath 13 by the 4th pipe connecting 64.Described the 3rd pipe connecting 63 is equipped with the 5th liquid feed valve 44, and described the 4th pipe connecting 64 is equipped with the 6th liquid feed valve 45.Through ion-exchange after a while, the more residual washing waste waters of tower body 201 interior meetings are brought impurity and the broken heavy metal selective ion exchange resin 203 in the tower body 201 into, the heavy metal selective ion exchange resin 203 of those impurity and fragmentation mixes with relatively large heavy metal selective ion exchange resin 203, affected the adsorptive power of relatively large 203 pairs of cupric ions of heavy metal selective ion exchange resin, for those impurity and broken heavy metal selective ion exchange resin 203 and relatively large heavy metal selective ion exchange resin 203 being separated to improve the adsorptive power of relatively large heavy metal selective ion exchange resin 203, need to carry out backwash to tower body 201.In the backwash process, close the first liquid feed valve 40, the second liquid feed valve 41, the 3rd liquid feed valve 42 and the 4th liquid feed valve 43, open the 5th liquid feed valve 44 and the 6th liquid feed valve 45, so that the washing waste water in the second washing bath 13 injects tower body 201 via the 5th liquid feed valve 44, the 3rd pipe connecting 63 from the tower body liquid outlet 2013 of tower body 201 successively, so that tower body 201 is carried out backwash, thereby so that washing waste water brings to tower body 201 tops with those impurity and broken heavy metal selective ion exchange resin 203 from tower body 201 bottoms.Move to those impurity at tower body 201 tops and broken heavy metal selective ion exchange resin 203 along with washing waste water injects in the second washing bath 13 via the 6th liquid feed valve 45 and the 4th pipe connecting 64 successively from tower body fluid inlet 2011, thereby those impurity and broken heavy metal selective ion exchange resin 203 are separated with relatively large heavy metal selective ion exchange resin 203, improve the adsorptive power of 203 pairs of cupric ions of heavy metal selective ion exchange resin.
The washing waste water in the second washing bath 13 it will be understood by those skilled in the art that between the second washing bath 13 and the 5th liquid feed valve 44 to have high-pressure pump, so that can more easily inject tower body 201 from tower body liquid outlet 2013; Also high-pressure pump can just be arranged between the second washing bath 13 and the 6th liquid feed valve 45, can more easily inject the second washing bath 13 from tower body fluid inlet 2011 so that carry the washing waste water of the heavy metal selective ion exchange resin 203 of impurity and fragmentation.
In addition, tower body 201 is carried out the used water of backwash also can be from the first washing bath 11, the 4th washing bath 12 or the 5th washing bath 15, and the water after the backwash also can inject the first washing bath 11, the 4th washing bath 12 or the 5th washing bath 15.
Need to prove, in the present embodiment, for so that heavy metal selective ion exchange resin 203 has preferably ion-exchange quality, use filter element device 80 before washing waste water ion switch 21, to leach from the impurity of larger particles in the washing waste water of the second washing bath 13, become broken to prevent heavy metal selective ion exchange resin 203 to be subject to the impact of larger particles impurity in the washing waste water, and prevent that larger particles impurity surrounds heavy metal selective ion exchange resin 203 and the adsorptive power of 203 pairs of cupric ions of reduction heavy metal selective ion exchange resin in the washing waste water.Certainly, it will be understood by those skilled in the art that filter element device 80 is not essential features.Even filter element device 80 omits not, that is, ion exchange unit 21 directly is connected with the second washing bath 13, also can realize the ion exchange treatment from the washing waste water of the second washing bath 13.
The washing waste water in the second washing bath 13 it will be understood by those skilled in the art that between the second washing bath 13 and the filter element device 80 to have high-pressure pump, so that can more easily inject filter element device 80; The washing waste water after filter element device 80 filters also high-pressure pump can just be arranged between filter element device 80 and the ion exchange unit 21, so that can more easily inject tower body 201 from tower body fluid inlet 2011.
Dashpot 90 is connected between ion exchange unit 21 and the reverse osmosis equipment 50, temporarily store with the washing waste water after will processing via ion exchange unit 21, thereby alleviate the lifting capacity of reverse osmosis equipment 50.Dashpot 90 has a buffering fluid inlet 903, buffering liquid outlet 905 and a buffering overflow port 901.Buffering fluid inlet 903 links to each other with tower body liquid outlet 2013 by the 3rd tubing 33, so that can inject dashpot 90 via the washing waste water after ion exchange unit 21 processing.Buffering liquid outlet 905 links to each other with reverse osmosis equipment 50 by the 4th tubing 34, so that the washing waste water in the dashpot 90 can inject reverse osmosis equipment 50.Dashpot 90 links to each other with the second fluid inlet 133 of the second washing bath 13 by buffering overflow port 901 and overflow pipe connecting 65, so that arrive can injecting in the second washing bath 13 by overflow pipe connecting 65 via the washing waste water after ion exchange unit 21 processing of buffering overflow port 901.
The pure water that obtains through reverse osmosis unit 51 via pure water spout 505, pure water transfer lime 38, and the 3rd fluid inlet 141 inject the 3rd washing bath 14, to give constantly supplementary feed of the 3rd washing bath 14.Because the water that the water in the 3rd washing bath 14 can overflow in the 5th washing bath 15, the five washing baths 15 can overflow into the second washing bath 13, thereby so that the second washing bath 13, the 3rd washing bath 14, and the 5th washing bath 15 in water can constantly upgrade.
The dense water that obtains through reverse osmosis unit 51 injects the first washing bath 11 via concentrated stream outlet 507, dense water transfer lime 39 and the first fluid inlet 101, and the first washing bath 11 is continuous must to replenish a part of water so that give.
Micron order filter core unit 508 is built-in with the micron order material for core.Described micron order material for core refers to this material for core and has a plurality of micrometer grade holes, so that can pass through this material for core less than the impurity in the aperture of this micrometer grade hole.In the present embodiment, this micron order filter core unit 508 is 5 microns filter core unit.It will be understood by those skilled in the art that this micron order filter core unit 508 also can for 4 microns filter core unit, 6 microns filter core unit, 3 microns other micron order filter core unit such as filter core unit, should select according to actual needs.
The fluid inlet 5081 of micron order filter core unit 508 links to each other with buffering liquid outlet 905 by the 4th tubing 34.The liquid outlet 5083 of micron order filter core unit 508 links to each other with the fluid inlet 5091 of grain active carbon filter core unit 509 by the 5th tubing 35.The liquid outlet 5093 of grain active carbon filter core unit 509 links to each other by the fluid inlet 5101 of the 6th tubing 36 with compression activated carbon cartridge unit 510.The liquid outlet 5013 of compression activated carbon cartridge unit 510 links to each other with the reverse osmosis fluid inlet 504 of reverse osmosis unit 51; thereby so that wash the waste water reverse osmosis unit 51 of after micron order filter core unit 508, grain active carbon filter core unit 509 and compression activated carbon cartridge unit 510 filter, reinjecting successively through heavy metal selective ion exchange resin 203 treated waters, to have alleviated the lifting capacity of reverse osmosis unit 51.Certainly, if the reverse osmosis ability of reverse osmosis unit 51 is stronger, filtering unit 53 also can omit not.That is to say that the washing waste water that comes from after ion exchange unit 21 is processed can directly enter reverse osmosis unit 51 through dashpot is after 90s, thereby is separated into pure water and dense water.
It will be understood by those skilled in the art that between reverse osmosis equipment 50 and the first washing bath 11 to have liquid feed valve, whether inject the first washing bath 11 so that control dense water; Dense water can also have high-pressure pump between reverse osmosis equipment 50 and the first washing bath 11, so that can must inject the first washing bath 11 easilier.Those skilled in the art are further appreciated that between reverse osmosis equipment 50 and the 3rd washing bath 14 can have liquid feed valve, so that whether the control pure water injects the 3rd washing bath 14; Pure water can also have high-pressure pump between reverse osmosis equipment 50 and the 3rd washing bath 14, so that can must inject the 3rd washing bath 14 easilier.
In the present embodiment, because 60 l/hs of the flows of washing waste water are greater than 7.9 l/hs of the water purification water production rates of reverse osmosis equipment 50, therefore between ion exchange unit 21 and reverse osmosis equipment 50, be provided with dashpot 90, temporarily store with the washing waste water after will processing via ion exchange unit 21, thereby alleviate the lifting capacity of reverse osmosis equipment 50.Be equal to or less than the water purification water production rate of reverse osmosis equipment 50 if it will be understood by those skilled in the art that the flow of washing waste water, dashpot 90 also can omit not.That is to say that washing waste water can directly inject reverse osmosis equipment 50 through behind the ion exchange unit 21.Those skilled in the art it is also understood that, between dashpot 90 and the tower body 201, between dashpot 90 and the reverse osmosis equipment 50, also can have liquid feed valve between dashpot 90 and the second washing bath 13, so that whether the washing waste water of control after processing via ion exchange unit 21 can correspondingly inject dashpot 90, reverse osmosis equipment 50 and the first washing bath 11.Those skilled in the art it is also understood that, between dashpot 90 and the tower body 201, between dashpot 90 and the reverse osmosis equipment 50, also can have high-pressure pump between dashpot 90 and the second washing bath 13, so that the washing waste water after processing via ion exchange unit 21 can must inject corresponding dashpot 90, reverse osmosis equipment 50 and the first washing bath 11 easilier.
The method of using above-mentioned electroplating system 100 to process waste water is as follows: at first, make the washing waste water in the second washing bath 13 inject filter element device 80 from the second washing bath 13, so that washing waste water is carried out primary filter; Then, the washing waste water after filter element device 80 filters is injected tower body 201; Then, utilize the cupric ion of the washing waste water in 203 pairs of injections of the heavy metal selective ion exchange resin tower body 201 in the tower body 201 to carry out the ion exchange processing, thereby obtain the washing waste water after the ion exchange; Then, the washing waste water after the described ion exchange is injected reverse osmosis equipment 50; Then, utilize the washing waste water in the 51 pairs of described reverse osmosis equipments of reverse osmosis unit in the reverse osmosis equipment 50 to carry out the reverse osmosis processing, thus pure water and dense water after obtaining to separate; At last, the pure water that obtains is injected the 3rd washing bath 14, and the dense water that will obtain injects the first washing bath 11.
For tower body 201 is carried out backwash, in the method for wastewater treatment of electroplating system 100, inject the 3rd washing bath 14 at the pure water that will obtain, and the dense water that will obtain inject can also comprise after the first washing bath 11 steps one with the washing waste water in the second washing bath 13 successively via via described backwash water liquid outlet 137, the 6th tubing 36, the 5th liquid feed valve 44 and tower body liquid outlet 2013 inject described tower body 201, and successively via described tower body fluid inlet 2011, the 6th liquid feed valve 45, the 7th tubing 37 and backwash water fluid inlet 139 flow into the step in the second washing bath 13.
The method of wastewater treatment that it will be understood by those skilled in the art that electroplating system 100 can also comprise the step of utilizing manipulation of regeneration liquid 18 regeneration heavy metal selective ion exchange resins 203.
With respect to prior art, electroplating system 100 and the method for wastewater treatment thereof of the technical program, it utilizes first ion exchange unit 21 and 50 pairs of washing waste waters of reverse osmosis equipment to process, the pure water and the dense water that will obtain after then will processing are supplemented to respectively in the 3rd washing bath 14 and the first washing bath 11, replenish part water not only can constantly for the 3rd washing bath 14, the 5th washing bath 15, the second washing bath 13 and the first washing bath 11, improve the utilization ratio of washing waste water, and can effectively reduce the possibility of washing waste water contaminate environment.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (12)
1. electroplating system, it comprises an electroplating device, this electroplating device comprises the first washing bath of successively adjacent setting, plating tank, the second washing bath and the 3rd washing bath, described the first washing bath is used for treating electroplating parts and washes, described plating tank is used for workpiece is electroplated, described the second washing bath and the 3rd washing bath are used for the workpiece after electroplating is washed, it is characterized in that, this electroplating system also comprises a sewage treatment equipment, this sewage treatment equipment comprises ion exchange unit and reverse osmosis equipment, described ion exchange unit comprises tower body and is contained in the interior heavy metal selective ion exchange resin of described tower body, described tower body has tower body fluid inlet and tower body liquid outlet, described tower body fluid inlet links to each other with described the second washing bath, between described the second washing bath and the tower body fluid inlet the first liquid feed valve is installed, described tower body liquid outlet is connected with reverse osmosis equipment, between described tower body liquid outlet and the reverse osmosis equipment the second liquid feed valve is installed, described heavy metal selective ion exchange resin is used for carrying out ion-exchange with washing waste water, be provided with reverse osmosis membrane in the described reverse osmosis equipment, being used for that the washing waste water after the ion-exchange is carried out reverse osmosis processes, with pure water and the dense water that obtains to be separated from each other, described reverse osmosis equipment has a pure water spout and a concentrated stream outlet, described pure water spout links to each other with described the 3rd washing bath, be used for that described reverse osmosis equipment is processed the rear pure water that produces and be delivered to described the 3rd washing bath, described concentrated stream outlet links to each other with described the first washing bath, is used for that described reverse osmosis equipment is processed the rear dense water that produces and is delivered to described the first washing bath.
2. electroplating system as claimed in claim 1, it is characterized in that, described sewage treatment equipment further comprises a filter element device that is connected between described the second washing bath and the described ion exchange unit, described filter element device has a filter core fluid inlet and a filter core liquid outlet, described filter core fluid inlet links to each other with described the second washing bath by the first tubing, described filter core liquid outlet links to each other with described tower body fluid inlet by the second tubing, the impurity that described filter element device is used for will described the second washing bath interior washing waste water larger particles leached inject the tower body of described ion exchange unit at washing waste water before, and described the first liquid feed valve is installed on described the second tubing.
3. electroplating system as claimed in claim 1 or 2, it is characterized in that, described sewage treatment equipment further comprises a dashpot, described dashpot has a buffering fluid inlet, a buffering liquid outlet and a buffering overflow port, described buffering fluid inlet links to each other with described tower body liquid outlet by the 3rd tubing, described buffering liquid outlet links to each other with described reverse osmosis equipment by the 4th tubing, described buffering overflow port links to each other with described the second washing bath by the overflow pipe connecting, and described the second liquid feed valve is installed on described the 3rd tubing.
4. electroplating system as claimed in claim 3 is characterized in that, described sewage treatment equipment further comprises the high-pressure pump that is connected between described dashpot and described the second washing bath.
5. electroplating system as claimed in claim 1, it is characterized in that, described ion exchange unit further is connected with a manipulation of regeneration pond and a wastewater collection pond, holding has manipulation of regeneration liquid in the described manipulation of regeneration pond, the manipulation of regeneration pond links to each other with described tower body fluid inlet by the first pipe connecting, described the first pipe connecting is equipped with the 3rd liquid feed valve, and described wastewater collection pond links to each other with described tower body liquid outlet by the second pipe connecting, and described the second pipe connecting is equipped with the 4th liquid feed valve.
6. electroplating system as claimed in claim 1, it is characterized in that, described ion exchange unit further comprises the 3rd pipe connecting, be installed on the 5th liquid feed valve of described the 3rd pipe connecting, the 4th pipe connecting and be installed on the 6th liquid feed valve of described the 4th pipe connecting, described the second washing bath further has a backwash water liquid outlet and a backwash water fluid inlet, the backwash water liquid outlet of described the second washing bath links to each other with described tower body fluid inlet by described the 3rd pipe connecting, and described backwash water fluid inlet links to each other with described tower body liquid outlet by described the 4th pipe connecting.
7. electroplating system as claimed in claim 1, it is characterized in that, described ion exchange unit further comprises the 3rd pipe connecting, be installed on the 5th liquid feed valve of described the 3rd pipe connecting, the 4th pipe connecting and be installed on the 6th liquid feed valve of described the 4th pipe connecting, described the first washing bath further has a backwash water liquid outlet and a backwash water fluid inlet, the backwash water liquid outlet of described the first washing bath links to each other with described tower body fluid inlet by described the 3rd pipe connecting, and described backwash water fluid inlet links to each other with described tower body liquid outlet by described the 4th pipe connecting.
8. electroplating system as claimed in claim 1, it is characterized in that, described reverse osmosis equipment comprises a filtering unit and a reverse osmosis unit, described filtering unit is connected between described reverse osmosis unit and the tower body liquid outlet, be used for filtering the impurity from the washing waste water of ion exchange unit, described reverse osmosis unit has a cavity of accommodating described reverse osmosis membrane, described cavity has described pure water spout, the outlet of described concentrated stream and a reverse osmosis fluid inlet, and described reverse osmosis fluid inlet links to each other with described filtering unit.
9. electroplating system as claimed in claim 8; it is characterized in that; described filtering unit comprises micron order filter core unit, grain active carbon filter core unit and the compression activated carbon cartridge unit of successively series connection; described micron order filter core unit links to each other with ion exchange unit, and described compression activated carbon cartridge unit links to each other with described reverse osmosis unit.
10. the method for wastewater treatment of an electroplating system comprises step:
As described in claim 1 electroplating system is provided;
The washing waste water that described the second washing bath is produced injects described tower body;
Washing waste water in the tower body is carried out the ion exchange processing, thereby obtain the washing waste water after the ion exchange;
Washing waste water after the described ion exchange is injected described reverse osmosis equipment, the washing waste water in the described reverse osmosis equipment is carried out reverse osmosis process, thus pure water and dense water that acquisition is separated from each other; And
The pure water that obtains is injected described the 3rd washing bath, and the dense water that will obtain injects described the first washing bath.
11. method of wastewater treatment as claimed in claim 10, it is characterized in that, before the washing waste water with described the second washing bath the inside injects described tower body, the washing waste water that described the second washing bath is produced injects a filter element device, to filter the impurity in the washing waste water in described the second washing bath.
12. method of wastewater treatment as claimed in claim 10, it is characterized in that, inject described the 3rd washing bath at the pure water that will obtain, and the dense water that will obtain injects after described the first washing bath, comprises that also one will be injected described tower body in the other direction with the step of backwash heavy metal selective ion exchange resin from the washing waste water of described the second washing bath.
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| CN2012101257536A CN103374743A (en) | 2012-04-26 | 2012-04-26 | Electroplating system and waste water treatment method |
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| CN2012101257536A CN103374743A (en) | 2012-04-26 | 2012-04-26 | Electroplating system and waste water treatment method |
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