CN105060581A - Treatment system and method for dark brown wastewater - Google Patents
Treatment system and method for dark brown wastewater Download PDFInfo
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- CN105060581A CN105060581A CN201510543873.1A CN201510543873A CN105060581A CN 105060581 A CN105060581 A CN 105060581A CN 201510543873 A CN201510543873 A CN 201510543873A CN 105060581 A CN105060581 A CN 105060581A
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Abstract
The invention relates to the technical field of printed circuit board manufacturing, in particular a treatment system and method for dark brown wastewater. The treatment system comprises a sedimentation tank, an electrolytic cell, a doser and a sulfuric acid transfer tank containing sulfuric acid. An agent used for converting copper in the dark brown wastewater into copper salt is contained in the doser; an outlet of the doser and an outlet of the sulfuric acid transfer tank are both communicated with the sedimentation tank; a liquid discharge mechanism used for discharging supernatant liquid in the sedimentation tank is arranged on the sedimentation tank, and an outlet of the sedimentation tank is communicated with an inlet of the electrolytic cell. According to the treatment system for the dark brown wastewater, the agent is added into the sedimentation tank through the doser to convert the copper in the sedimentation tank into the copper salt sediment, part of brown wastewater meeting discharge standards is discharged first, and then the sulfuric acid is added to dissolve the copper salt, so that the amount of liquid entering the electrolytic cell is reduced, the requirement for the capacity of the electrolytic cell is lowered, and the treatment cost is lowered.
Description
Technical field
The present invention relates to print circuit plates making technical field, especially relate to a kind of black brown Waste Water Treatment and treatment process thereof.
Background technology
In the middle of printed circuit board production process, in internal layer circuit plate pressing working procedure, need circuit card to carry out black brown process.Black brown process is the complex process of the reactions such as a series of chemistry erosion copper, along with the carrying out that black brown is produced, copper ion concentration in black brown liquid constantly rises, when cupric ion exceed a certain amount of after, black brown liquid just too much can make black brown copper face not reach design requirements because cupric ion, produces quality problem, therefore, now black brown tank liquor must process, and cupric ion is controlled within the specific limits, thus ensures the quality of brown product.After copper ion concentration reaches a threshold quantity in usual black brown process, need the constantly black brown liquid of discharge, supplement simultaneously and add black brown liquid to reduce copper ion concentration, and keep the stable of each active principle content of black brown groove.
The black brown liquid of discharge just becomes serious pollution waste liquid.Along with the very fast development of electronic technology, printed wiring board industry rapid growth, black brown technology is a gordian technique of internal layer circuit plate pressing working procedure, governs the operation that one of wiring board quality is important, causes the output of black brown oxide waste liquid to get more and more.In PCB industry, because black brown treatment process is a necessary technique.So whether can cost-effectively process the black brown waste water that black brown technique produces, become the threshold that one of weighing the development of printed circuit board (PCB) manufacturing enterprise is important.
In prior art, the black brown liquid that production printed circuit board (PCB) produces is carried out electrolysis, and amount of liquid is large, so the capacity requirement for electrolyzer is very large, and processing cost is high.
Summary of the invention
The object of the present invention is to provide black brown Waste Water Treatment and treatment process thereof, very large to solve the capacity requirement in electrolyzer existed in prior art, the technical problem that processing cost is high.
The black brown Waste Water Treatment of one provided by the invention, comprising: settling bowl, electrolyzer and doser, and for being loaded with the sulfuric acid transfer tank of sulfuric acid; The medicine for making the copper in black brown waste water change into mantoquita is loaded with in doser; The outlet of doser is all communicated with settling bowl with the outlet of sulfuric acid transfer tank; Settling bowl is provided with the drainage mechanism for discharging the upper liquid in settling bowl, the outlet of settling bowl and the inlet communication of electrolyzer.
Further, the outlet of electrolyzer is communicated with sulfuric acid transfer tank.
Further, the medicine in doser comprises contact break compound and agglutinating matter.
Further, contact break compound is ferric sulfate, and agglutinating matter is poly-propionic acid.
Further, black brown Waste Water Treatment also comprises black brown waste water collection tank; The black outlet of brown waste water collection tank and the inlet communication of settling bowl, for collecting black brown waste water.
Further, settling bowl comprises the first settling bowl and the second settling bowl; The outlet of black brown waste water collection tank is communicated with the second settling bowl with the first settling bowl respectively by the first pipeline; The outlet of doser is communicated with the second settling bowl with the first settling bowl respectively by second pipe, and the outlet of sulfuric acid transfer tank is communicated with the second settling bowl with the first settling bowl respectively by the 3rd pipeline.
Further, each first pipeline, each second pipe and each 3rd pipeline are provided with valve, and for carrying the infusion pump of liquid.
Further, be provided with whipping appts in the first settling bowl and the second settling bowl, whipping appts is for stirring the liquid in the first settling bowl and the second settling bowl.
Further, black brown Waste Water Treatment also comprises reuse transfer tank; Drainage mechanism comprises waste water pump and liquid discharge pipe, and drainage mechanism, waste water pump are communicated with by liquid discharge pipe successively with reuse transfer tank.
Present invention also offers a kind of black brown method of wastewater treatment, comprise the steps:
In black brown waste water, the medicine added for making the copper in black brown waste water change into mantoquita obtains preliminary treatment liquid, and wherein, medicine comprises contact break compound and agglutinating matter;
Preliminary treatment liquid is stirred to leave standstill and obtains upper liquid and lower floor's mantoquita, and upper liquid is discharged;
Sulfuric acid is added in lower floor's mantoquita, mantoquita is dissolved and obtains secondary treatment liquid;
Secondary treatment liquid is put into electrolyzer Inner electrolysis, secondary treatment liquid is electrolyzed to produce the copper be electroplated onto on negative plate, and the sulfuric acid in electrolyzer.
Black brown Waste Water Treatment provided by the invention and treatment process thereof, the black brown waste water that production printed circuit board (PCB) produces is entered in settling bowl, and utilize doser to be added in settling bowl by the medicine in it, the copper of the black brown waste water in settling bowl is changed into mantoquita, mantoquita is precipitated.Like this, in settling bowl, define upper liquid and lower floor's mantoquita, the upper liquid reaching discharge mark is discharged settling bowl.Then in settling bowl, add sulfuric acid, the mantoquita in settling bowl is dissolved, the transfer of the lower concentration copper of large quantity of fluid is formed the dense copper of height of a small amount of liquid.Afterwards, the mantoquita after the dissolving in settling bowl is drained into electrolyzer Inner electrolysis, thus the copper in black brown waste water is electroplated on the negative plate in electrolyzer.
In black brown Waste Water Treatment provided by the invention, due to its by doser to settling bowl dosing, copper in settling bowl is changed into mantoquita precipitation, thus a first discharge part reaches the black brown waste water of emission standard, then, sulfuric acid will be added mantoquita will be dissolved, the amount of liquid entered in electrolyzer is reduced, decrease the demand of the capacity to electrolyzer, reduce processing cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the black brown Waste Water Treatment that Fig. 1 provides for the embodiment of the present invention;
The schematic flow sheet of the black brown method of wastewater treatment that Fig. 2 provides for the embodiment of the present invention.
Reference numeral:
1-settling bowl; 2-doser; 3-sulfuric acid transfer tank;
4-electrolyzer; The black brown waste water collection tank of 5-; 6-reuse transfer tank;
11-first settling bowl; 12-second settling bowl.
Embodiment
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, particular case above-mentioned term concrete meaning in the present invention can be understood.
The structural representation of the black brown Waste Water Treatment that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, the black brown Waste Water Treatment of the one that the present embodiment provides, comprising: settling bowl 1, electrolyzer 4 and doser 2, and for being loaded with the sulfuric acid transfer tank 3 of sulfuric acid; Be loaded with for making black brown Cu in waste water change into the medicine of mantoquita in doser 2; The outlet of doser 2 is all communicated with settling bowl 1 with the outlet of sulfuric acid transfer tank 3; Settling bowl 1 is provided with the drainage mechanism for discharging the upper liquid in settling bowl 1, the outlet of settling bowl 1 and the inlet communication of electrolyzer 4.
Wherein, settling tank can be one, also can be multiple, when settling bowl 1 is multiple, each settling bowl 1 is all communicated with electrolyzer 4, and doser 2 is communicated with each settling bowl 1 respectively, and electrolyzer 4 is communicated with each settling bowl 1 respectively, thus utilize multiple settling bowl 1 sedimentation mantoquita successively, improve processing efficiency.
Further, black brown Waste Water Treatment also comprises black brown waste water collection tank 5; The outlet of black brown waste water collection tank 5 and the inlet communication of settling bowl 1, for collecting black brown waste water.
Be preferably that settling bowl 1 comprises the first settling bowl 11 and the second settling bowl 12; The outlet of black brown waste water collection tank 5 is communicated with the second settling bowl 12 with the first settling bowl 11 respectively by the first pipeline; The outlet of doser 2 is communicated with the second settling bowl 12 with the first settling bowl 11 respectively by second pipe, and the outlet of sulfuric acid transfer tank 3 is communicated with the second settling bowl 12 with the first settling bowl 11 respectively by the 3rd pipeline.Wherein, each first pipeline, each second pipe and each 3rd pipeline are provided with valve, and for carrying the infusion pump of liquid.
Utilize black brown waste water collection tank 5 to collect black brown waste water, black brown waste water collection tank 5 first arranges black brown waste water to the first settling tank, and doser 2 is to the first settling tank dosing, and the first settling tank first carries out stirring precipitation.When the first settling bowl 11 discharges upper liquid, black brown waste water collection tank 5 discharges black brown waste water to the second settling tank, and doser 2 is to the second settling bowl 12 dosing, and the second settling tank carries out stirring precipitation.Now, sulfuric acid transfer tank 3 adds the mantoquita in sulfuric acid dissolution first settling bowl 11 to the first settling bowl 11, and enters electrolyzer 4 Inner electrolysis.Meanwhile, discharge the upper liquid in the second settling bowl 12, in the second settling tank, add sulfuric acid.When electrolyzer 4 processes the black brown waste water of the first settling bowl 11, and by after retrieval of sulfuric acid to sulfuric acid transfer tank 3, the secondary treatment liquid in the second settling bowl 12 enters to electrolyzer 4 Inner electrolysis.Like this, the processing speed of black brown waste water can be improved, further reduce cost for wastewater treatment.
In addition, the structure of sulfuric acid transfer tank 3 and doser 2 can be multiple, such as: sulfuric acid transfer tank 3 and doser 2 can be casing, also can be cell body etc.
Medicine in doser 2 can be multiple, such as: the medicine of doser 2 comprises contact break compound and agglutinating matter.Be preferably that contact break compound is ferric sulfate, agglutinating matter is poly-propionic acid.
The structure formation of drainage mechanism can be multiple, and such as: drainage mechanism can comprise leakage fluid dram and valve, leakage fluid dram is arranged on the bottom of settling tank, and leakage fluid dram is provided with filter screen and valve, and filter screen is for stopping that mantoquita flows out outside settling tank.
And for example: drainage mechanism can also comprise wet-pit and water shoot, wet-pit utilizes water shoot to be communicated with settling tank, utilizes wet-pit settling tank upper liquid to be extracted out outside settling tank.
The black brown Waste Water Treatment that the present embodiment provides, the black brown waste water that production printed circuit board (PCB) produces is entered in settling bowl 1, and utilize doser 2 to be added in settling bowl 1 by the medicine in it, the copper of the black brown waste water in settling bowl 1 is changed into mantoquita, mantoquita is precipitated.Like this, in settling bowl 1, define upper liquid and lower floor's mantoquita, the upper liquid reaching discharge mark is discharged settling bowl 1.Then in settling bowl 1, add sulfuric acid, the mantoquita in settling bowl 1 is dissolved, the transfer of the lower concentration copper of large quantity of fluid is formed the dense copper of height of a small amount of liquid.Afterwards, the mantoquita after the dissolving in settling bowl 1 is drained into electrolyzer 4 Inner electrolysis, thus the copper in black brown waste water is electroplated on the negative plate in electrolyzer 4.
In the black brown Waste Water Treatment that the present embodiment provides, because it passes through doser 2 to settling bowl 1 dosing, copper in settling bowl 1 is changed into mantoquita precipitation, thus a first discharge part reaches the black brown waste water of emission standard, then, sulfuric acid will be added mantoquita will be dissolved, the amount of liquid entered in electrolyzer 4 is reduced, decrease the demand of the capacity to electrolyzer 4, reduce processing cost.
As shown in Figure 1, on the basis of above-described embodiment, further, the outlet of electrolyzer 4 is communicated with sulfuric acid transfer tank 3.
Wherein, the outlet of electrolyzer 4 also can be communicated with sulfuric acid transfer tank 3 with pipeline by the pump housing.
When utilizing the black brown Waste Water Treatment in the present embodiment, black brown waste water is entered in settling bowl 1, and the medicine in doser 2 is added in settling bowl 1, and medicine is mixed with the black brown waste water in settling bowl 1, utilize medicine that the copper in black brown waste water is rotated into mantoquita, and being deposited in bottom settling bowl 1, upper liquid is the waste water meeting emission standard.
Drainage mechanism is utilized upper liquid to be discharged outside settling bowl 1, and be added in settling bowl 1 through the sulfuric acid of sulfuric acid transfer tank 3, utilize sulfuric acid dissolution mantoquita to obtain secondary treatment liquid and enter in electrolyzer 4, utilize electrolyzer 4 secondary treatment liquid to be electrolyzed to produce the copper be electroplated onto on negative plate, and stay the sulfuric acid in electrolyzer 4.Finally, utilize the pump housing to be entered in sulfuric acid transfer tank 3 in the sulfuric acid in electrolyzer 4, recycle.
In the present embodiment, the retrieval of sulfuric acid in electrolyzer 4 is utilized, further reduces processing cost.
As shown in Figure 1, on the basis of above-described embodiment, further, be provided with whipping appts in the first settling bowl 11 and the second settling bowl 12, whipping appts is for stirring the liquid in the first settling bowl 11 and the second settling bowl 12.
Wherein, whipping appts can be multiple, such as: whipping appts can comprise electric motor, stirring rake, stirring rake is fixedly installed in the power output shaft of electric motor, stirring rake is put into settling bowl 1, utilize electric motor to drive stirring rake to rotate, thus stir the liquid in settling bowl 1.Certainly, whipping appts can also be magnetic stirrer or start agitator etc.
In the present embodiment, whipping appts is utilized the medicine in settling bowl 1 and black brown waste water to be mixed fully, medicine is contacted fully with black brown Cu in waste water, improve the speed of reaction, also reaction can be made more abundant, improve the efficiency of wastewater treatment, and the quality of wastewater treatment, create a further reduction the cost of wastewater treatment.
As shown in Figure 1, on the basis of above-described embodiment, further, black brown Waste Water Treatment also comprises reuse transfer tank 6; Drainage mechanism comprises second pump housing and liquid discharge pipe, and drainage mechanism, second pump housing are communicated with by liquid discharge pipe successively with reuse transfer tank 6.
In the present embodiment, the upper liquid of settling tank is recycled in reuse transfer tank 6, this upper liquid can be used for the place not high to water quality requirement, reduce the waste of water resources.
The schematic flow sheet of the black brown method of wastewater treatment that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, the present embodiment additionally provides a kind of black brown method of wastewater treatment, comprises the steps:
Step 100, in black brown waste water, the medicine added for making the copper in black brown waste water change into mantoquita obtains preliminary treatment liquid, and wherein, medicine comprises contact break compound and agglutinating matter;
Step 200, leaves standstill the stirring of preliminary treatment liquid and obtains upper liquid and lower floor's mantoquita, and upper liquid discharged;
Step 300, is added to sulfuric acid in lower floor's mantoquita, mantoquita is dissolved and obtains secondary treatment liquid;
Step 400, puts into electrolyzer 4 Inner electrolysis, secondary treatment liquid is electrolyzed to produce the copper be electroplated onto on negative plate by secondary treatment liquid, and the sulfuric acid in electrolyzer 4.
The black brown method of wastewater treatment that the present embodiment provides, the black brown waste water that production printed circuit board (PCB) produces is entered in settling bowl 1, and utilize doser 2 to be added in settling bowl 1 by the medicine in it, the copper of the black brown waste water in settling bowl 1 is changed into mantoquita, mantoquita is precipitated.Like this, in settling bowl 1, define upper liquid and lower floor's mantoquita, the upper liquid reaching discharge mark is discharged settling bowl 1.Then in settling bowl 1, add sulfuric acid, the mantoquita in settling bowl 1 is dissolved, the transfer of the lower concentration copper of large quantity of fluid is formed the dense copper of height of a small amount of liquid.Afterwards, the mantoquita after the dissolving in settling bowl 1 is drained into electrolyzer 4 Inner electrolysis, thus the copper in black brown waste water is electroplated on the negative plate in electrolyzer 4.
In the black brown Waste Water Treatment that the present embodiment provides, because it passes through doser 2 to settling bowl 1 dosing, copper in settling bowl 1 is changed into mantoquita precipitation, thus a first discharge part reaches the black brown waste water of emission standard, then, sulfuric acid will be added mantoquita will be dissolved, the amount of liquid entered in electrolyzer 4 is reduced, decrease the demand of the capacity to electrolyzer 4, reduce processing cost.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a black brown Waste Water Treatment, is characterized in that, comprising: settling bowl, electrolyzer and doser, and for being loaded with the sulfuric acid transfer tank of sulfuric acid;
The medicine for making the copper in black brown waste water change into mantoquita is loaded with in described doser; The outlet of described doser is all communicated with described settling bowl with the outlet of described sulfuric acid transfer tank; Described settling bowl is provided with the drainage mechanism for discharging the upper liquid in described settling bowl, the outlet of described settling bowl and the inlet communication of described electrolyzer.
2. black brown Waste Water Treatment according to claim 1, is characterized in that, the outlet of described electrolyzer is communicated with described sulfuric acid transfer tank.
3. black brown Waste Water Treatment according to claim 1, it is characterized in that, the medicine in described doser comprises contact break compound and agglutinating matter.
4. black brown Waste Water Treatment according to claim 3, is characterized in that, described contact break compound is ferric sulfate, and described agglutinating matter is poly-propionic acid.
5. black brown Waste Water Treatment according to claim 1, is characterized in that, also comprises black brown waste water collection tank;
The described outlet of black brown waste water collection tank and the inlet communication of described settling bowl, for collecting black brown waste water.
6. black brown Waste Water Treatment according to claim 5, it is characterized in that, described settling bowl comprises the first settling bowl and the second settling bowl;
The outlet of described black brown waste water collection tank is communicated with described second settling bowl with described first settling bowl respectively by the first pipeline;
The outlet of described doser is communicated with described second settling bowl with described first settling bowl respectively by second pipe, and the outlet of described sulfuric acid transfer tank is communicated with described second settling bowl with described first settling bowl respectively by the 3rd pipeline.
7. black brown Waste Water Treatment according to claim 6, is characterized in that, each described first pipeline, each described second pipe and each described 3rd pipeline are provided with valve, and for carrying the infusion pump of liquid.
8. black brown Waste Water Treatment according to claim 6, it is characterized in that, be provided with whipping appts in described first settling bowl and described second settling bowl, described whipping appts is for stirring the liquid in described first settling bowl and described second settling bowl.
9. the black brown Waste Water Treatment according to any one of claim 1-8, is characterized in that, also comprise reuse transfer tank;
Described drainage mechanism comprises waste water pump and liquid discharge pipe; Described drainage mechanism, described waste water pump are communicated with by liquid discharge pipe successively with described reuse transfer tank.
10. a black brown method of wastewater treatment, is characterized in that, comprise the steps:
In black brown waste water, the medicine added for making the copper in black brown waste water change into mantoquita obtains preliminary treatment liquid, and wherein, medicine comprises contact break compound and agglutinating matter
Described preliminary treatment liquid is stirred to leave standstill and obtains upper liquid and lower floor's mantoquita, and described upper liquid is discharged;
Sulfuric acid is added in described lower floor mantoquita, mantoquita is dissolved and obtains secondary treatment liquid;
Described secondary treatment liquid is put into electrolyzer Inner electrolysis, secondary treatment liquid is electrolyzed to produce the copper be electroplated onto on negative plate, and the sulfuric acid in described electrolyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510543873.1A CN105060581A (en) | 2015-08-28 | 2015-08-28 | Treatment system and method for dark brown wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510543873.1A CN105060581A (en) | 2015-08-28 | 2015-08-28 | Treatment system and method for dark brown wastewater |
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| CN201510543873.1A Pending CN105060581A (en) | 2015-08-28 | 2015-08-28 | Treatment system and method for dark brown wastewater |
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| CN101648758A (en) * | 2009-09-01 | 2010-02-17 | 浙江大学 | Electroplating recession water processing and Ni-Cu recovering process |
| CN102120668A (en) * | 2010-09-26 | 2011-07-13 | 东南大学 | Printed circuit board integrated wastewater resource utilization method |
| CN103183421A (en) * | 2011-12-28 | 2013-07-03 | 北大方正集团有限公司 | Treatment method for waste water containing complex copper |
| CN104108819A (en) * | 2014-06-13 | 2014-10-22 | 南京大学 | A combined process for treating heavy metal complexing waste water |
| CN204981439U (en) * | 2015-08-28 | 2016-01-20 | 上海八菱环保科技有限公司 | Black palmization effluent disposal system |
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2015
- 2015-08-28 CN CN201510543873.1A patent/CN105060581A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101648758A (en) * | 2009-09-01 | 2010-02-17 | 浙江大学 | Electroplating recession water processing and Ni-Cu recovering process |
| CN102120668A (en) * | 2010-09-26 | 2011-07-13 | 东南大学 | Printed circuit board integrated wastewater resource utilization method |
| CN103183421A (en) * | 2011-12-28 | 2013-07-03 | 北大方正集团有限公司 | Treatment method for waste water containing complex copper |
| CN104108819A (en) * | 2014-06-13 | 2014-10-22 | 南京大学 | A combined process for treating heavy metal complexing waste water |
| CN204981439U (en) * | 2015-08-28 | 2016-01-20 | 上海八菱环保科技有限公司 | Black palmization effluent disposal system |
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