CN201598198U - Membrane separation device for zero-discharge industrial wastewater treatment - Google Patents
Membrane separation device for zero-discharge industrial wastewater treatment Download PDFInfo
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- CN201598198U CN201598198U CN200920260850XU CN200920260850U CN201598198U CN 201598198 U CN201598198 U CN 201598198U CN 200920260850X U CN200920260850X U CN 200920260850XU CN 200920260850 U CN200920260850 U CN 200920260850U CN 201598198 U CN201598198 U CN 201598198U
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Abstract
The utility model relates to a membrane separation device for zero-discharge industrial wastewater treatment, which belongs to the field of electroplating wastewater treatment. The electroplating wastewater treatment with a membrane component in the prior art has the shortcomings of complex device structure and high treatment cost. The membrane separation device comprises an electroplating tank, a collection tank, a regulation tank, a filter, an electroplating solution recovery tank, and an electroplated part cleaning tank or a pure water storage tank. The electroplating tank, the collection tank, the regulation tank and the filter are connected in sequence according to the production process; the regulation tank is connected with the electroplating solution recovery tank according to the production process; and the electroplating solution recovery tank is connected with the electroplating tank according to the production process. The device also comprises a membrane component, in which an electropositive separation membrane prepared from polymer permeable membranes by lamination and ammonification is designed, wherein the regulation tank, the filter, the electroplated part cleaning tank or the pure water storage tank are all connected with the membrane component according to the production process. The membrane separation device is used for treating electroplating wastewater, and has the advantages of simple structure, low cost and zero discharge of electroplating wastewater treatment.
Description
Technical field
The utility model relates to electroplating wastewater processing and water reuse and heavy metal resources and reclaims the field, particularly relates to a kind of device that adopts membrane integrating technique to handle electroplating wastewater.
Background technology
Electroplating industry is one of the current whole world three big contaminated industries.According to statistics, the annual electroplating wastewater of discharging of national electroplating industry has 40 billion cubic meters approximately, is equivalent to the tap water supply amount of several big and medium-sized cities, has seriously aggravated the shortage of water resources.The electroplating water amount is big, the electroplating rinse water environmental pollution is serious, has caused the electroplating industry can't sustainable development.Electroplating wastewater mainly is made up of pre-treatment acid-alkali washing waste water and electroplating work procedure poaching wastewater, the main pollutent of acidic and alkaline waste water for the oil that wash, thing, soda acid etc. become rusty, though can discharge or reuse through simple materialization processing, but materialization processing cost higher (mainly being that the dosing expense is higher), and occupied ground is bigger.The gold-plated waste water of circuit card causes overflow water COD to exceed standard because a large amount of gold ions that contains is taken away in the rinsing of plating bath workpiece, has both polluted environment, has wasted the gold ion that contains in the great amount of water resources, particularly waste water up to 0.68g/L again.Though the treatment process of existing main flow is widely used, and still all exists deficiency or defective.
Application number is that 200510043668.5 (publication number: Chinese invention patent application specification 1869289) discloses a kind of " electroplating wastewater zero utilization process and equipment ", 1), pre-treatment its technology comprises:, the electroplating wastewater that the electroplate rinsing groove is produced carries out the pre-treatment separation, holds back the organism and the suspended substance of small molecular weight; 2), separating beavy metal, use membrane module that the pretreated liquid that sees through is separated, its concentrated solution that contains heavy metal is delivered to vaporizer and further concentrates carrying out, it sees through liquid and is recycled to the recycling of electroplate rinsing groove; 3), evaporation concentration, by vaporizer the concentrated solution of membrane module is cooked further to concentrate, reach to electroplate to be recycled in the coating bath after the required concentration and reuse.
Application number is that 200710131532.9 (publication number: Chinese invention patent application specification 101157509) discloses a kind of " treatment process of electroplating wastewater zero or low emission ", this method has adopted meta-synthetic engineerings such as membrane concentration, membrane sepn, ion-exchange and ultraviolet catalytic oxidation, comprises the steps: the electroplating wastewater pre-treatment; The processing of pickling waste waters, cyanide containing wastewater and passivation and electroplate rinsing composite waste three class waste water; The processing of waste water in the acid bath.
Application number be 03157655.9 (publication number: Chinese invention patent application specification 1590322) disclose a kind of " membrane separating method of electroplating wastewater processing zero release; it comprises on the technology liquid material processing, lifting, supercharging and transports routine; wherein adopted the hierarchical composition of membrane separation technique: pre-treatment, finish the removing of impurity, organism and fine suspension; Remove sodium ion in the one-level nanofiltration membrane separation, make waste water concentrate 10 times and permitted, the rejection of heavy metal ion is greater than 97%; Waste water concentrated solution reconcentration is permitted for 5 times, and it is higher than 98% to the divalent ion rejection; During three grades of seawater reverse osmosis membranes separate waste water is concentrated more than 2 times or 2 times, the rejection of mineral ion is higher than 99.5%; Adopted the p H value of regulating rinse water to prevent that the oxyhydroxide in the waste water from producing precipitation and regular chemistry, the physical step of flushing automatically.
The patent No. is that (Granted publication number: Chinese invention patent specification sheets 100413791) discloses a kind of " integrated barrier separation of the electroplating effluent recycles craft and apparatus " to 200510043669.X, the patent No. is 200610096133.9, and (Granted publication number: Chinese invention patent specification sheets 100396627) discloses " a kind of clean preparation method for the treatment of electroplating waste water by nano filtering process ", the patent No. is 200610027239.3, and (Granted publication number: Chinese invention patent specification sheets 100546921) discloses a kind of " recovery system of metal ion in the electroplate rinsing wastewater ", and the patent No. is 200710014589.0, and (Granted publication number: Chinese invention patent specification sheets 100443423) discloses a kind of " electroplating wastewater treatment reclaiming technique ".
Above-mentioned many pieces of documents have related to membrane module handles water circulation use and the Zero discharge that electroplating wastewater is realized electroplating enterprise, but the electroplating waste processing equipment structure is complicated, electroplating wastewater processing cost height, from the angle that saves production cost, electroplating enterprise is difficult for realizing the electroplating wastewater processing zero release, and it is bigger to implement difficulty.Its key is that the kind of the film of design in membrane module is few, the domestic restriction that is subjected to technology and starting material, auxiliary equipment again, can only adopt single mould material to make film, the quality of film does not reach the purpose that flash trapping stage just can thoroughly be handled electroplating wastewater, the consequence that causes is that technology is not comprehensive, it is not thorough to handle electroplating wastewater, so that membrane technique fails to apply in field of electroplating.
The utility model content
Technical problem to be solved in the utility model is, overcome above-mentioned prior art and handle complexity of its treatment unit structure of electroplating wastewater with membrane module, the electroplating wastewater processing defect of high cost, a kind of membrane separation unit of industrial wastewater treatment zero draining is provided, use this device to handle electroplating wastewater, its treatment unit is simple in structure, and the electroplating wastewater processing cost is lower, and electroplating enterprise is realized the electroplating wastewater processing zero release easily.
The technical scheme that its technical problem that solves the utility model adopts is: the membrane separation unit of industrial wastewater treatment zero draining, comprise plating tank, receiving tank, equalizing tank, strainer, the electroplate liquid accumulator tank, the rinse bath of plating piece or pure water storage tanks, plating tank, receiving tank, equalizing tank and strainer are production technique in regular turn and link together, equalizing tank and electroplate liquid accumulator tank are production technique and link together, electroplate liquid accumulator tank and plating tank are production technique and link together, the membrane separation unit of this industrial wastewater treatment zero draining also comprises membrane module, the useful polymer permeable membrane of design becomes lotus positive polarity separatory membrane, equalizing tank through compound ammonification again in described membrane module, strainer, the rinse bath of plating piece or pure water storage tanks are production technique with membrane module respectively and link together.
The operating process of the membrane separation unit of this industrial wastewater treatment zero draining is:
(1), the electroplating wastewater in the plating tank is pumped into receiving tank;
(2), the electroplating wastewater in the receiving tank is pumped into equalizing tank, regulate the pH value of electroplating wastewater with acid or alkali, the pH value that makes electroplating wastewater is 7～8;
(3), the waste water of regulating through pH value in the equalizing tank sent into strainer carry out pre-treatment, thick anode ionic species impurity in the first filtering waste water is removed the organism in the waste water again, uses the fine suspension in the microfiltration membrane filtering waste water then;
(4), will carry out membrane sepn by membrane module through pretreated waste water, make metal ion and water sepn, obtain concentrated solution respectively and see through liquid; The useful polymer permeable membrane of design becomes lotus positive polarity separatory membrane through compound ammonification again in described membrane module;
(5), will reach the rinse bath or the reuse of pure water storage tanks that liquid is sent into plating piece that see through of deionized water standard; Equalizing tank is sent in the concentrated solution circulation to be continued to separate;
(6), partly send into the electroplate liquid accumulator tank, the concentrated solution in the equalizing tank with through the waste water mixture that pH value is regulated be configured to new electroplate liquid after circulation send into the plating tank reuse.
The beneficial effects of the utility model are: 1, use the utility model to handle electroplating wastewater, its treatment unit is simple in structure, and the electroplating wastewater processing cost is lower, and electroplating enterprise is realized the electroplating wastewater processing zero release easily.2, becoming lotus positive polarity separatory membrane with the polymer permeable membrane through compound ammonification again is a kind of translucent infiltration composite membrane, and the resistance to crocking and the charge of this separatory membrane are greatly improved, and can be used to handle electroplating industry and is difficult to the thoroughly electroplating wastewater of radical cure.3, become lotus positive polarity separatory membrane energy antipollution, separation property height with the polymer permeable membrane through compound ammonification again, can be effectively with various ions and water sepn in the waste water, its separation rate is up to 99%; Because it has electrically, pollutent is difficult for adhering to, and can play keying action to the particularly separation of rare metal in the electroplating wastewater, recovery.4, in the utility model, utilize this separatory membrane can be with recycling after the various ion isolation in the waste water, see through liquid and can carry out reuse, realized closed processing system, whole circulation system reaches material balance, thereby, the processing of electroplating wastewater has realized zero release, not only can not cause secondary pollution, but also has reclaimed the harmful heavy metal in the waste water.5, use the utility model not only can handle electroplating wastewater, but also can handle other trade effluent.The utility model is intended to reach from the Electroplating Production waste water treatment angle incision of zero release, a kind of feasible program that adopts membrane separation technique is provided, it can be saved the Electroplating Production water consumption and alleviate the pollution of electroplating industry to water surrounding, in the hope of promoting and promote the Sustainable development of electroplating industry.The utility model is based on the application of membrane separation technique, and its theoretical foundation is that the reverse osmosis among the membrane separation technique can hold back the mineral ion and the organism overwhelming majority, only allows water molecules see through, and is about to water and other organism and mineral ion separately.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a block diagram of the present utility model.
Embodiment
With reference to shown in Figure 1, the membrane separation unit of the described industrial wastewater treatment zero draining of present embodiment, application based on membrane separation technique, its theoretical foundation is that the reverse osmosis among the membrane separation technique can hold back the mineral ion and the organism overwhelming majority, only allow water molecules see through, be about to water and other organism and mineral ion separately, its structure comprises plating tank 1, receiving tank 2, equalizing tank 3, strainer 4, electroplate liquid accumulator tank 7, the rinse bath of plating piece or pure water storage tanks 6, plating tank 1, receiving tank 2, equalizing tank 3 and strainer 4 are production technique in regular turn and link together, equalizing tank 3 and electroplate liquid accumulator tank 7 are production technique and link together, electroplate liquid accumulator tank 7 and plating tank 1 are production technique and link together, the membrane separation unit of the described industrial wastewater treatment zero draining of present embodiment also comprises membrane module 5, the useful polymer permeable membrane of design becomes lotus positive polarity separatory membrane, equalizing tank 3 through compound ammonification again in described membrane module 5, strainer 4, the rinse bath of plating piece or pure water storage tanks 6 are production technique with membrane module 5 respectively and link together.
The operating process of the membrane separation unit of the described industrial wastewater treatment zero draining of present embodiment is:
(1), the electroplating wastewater in the plating tank 1 is pumped into receiving tank 2;
(2), the electroplating wastewaters in the receiving tank 2 are pumped into equalizing tank 3, regulate the pH value of electroplating wastewater with acid or alkali, the pH value that makes electroplating wastewater is 7～8; Can prevent that by regulating pH value the oxyhydroxide in the waste water from producing precipitation;
(3), the waste water of regulating through pH value in the equalizing tank 3 is sent into strainer 4 and carry out pre-treatment, earlier with thick anode ionic species impurity in the strainer 4 filtering waste water, remove organism in the waste water with carbon fiber absorption again, use the fine suspension in the microfiltration membrane filtering waste water of small-bore more then; Can remove particulate contamination by pre-treatment, to guarantee the safety of membrane module 5;
(4), will carry out membrane sepn by membrane module 5 through pretreated waste water, make metal ion and water sepn, obtain concentrated solution respectively and see through liquid; The useful polymer permeable membrane of design becomes lotus positive polarity separatory membrane through compound ammonification again in described membrane module 5; To separate with membrane module 5 through pretreated waste water, the polymer permeable membrane becomes lotus positive polarity separatory membrane through compound ammonification again after the processing and manufacturing of strictness prescription, this film energy antipollution, separation property height, can be effectively with various ions and water sepn in the waste water, its separation rate is up to 99%; Because membrane separation technique has less energy-consumption, no phase transformation, pollution-free, and separation efficiency, cycles of concentration advantages of higher, adopt this rinse water that become the concentrated electroplate liquid of lotus positive polarity separatory membrane separation with the polymer permeable membrane through compound ammonification again, its cycles of concentration can reach 100 times (by volumes), after the rinse water and separating metal ion and water that concentrate electroplating wastewater, obtain concentrated solution respectively and see through liquid;
(5), will reach the rinse bath or 6 reuses of pure water storage tanks that liquid is sent into plating piece that see through of deionized water standard, thereby realize the zero release of electroplating wastewater processing; Equalizing tank 3 is sent in the concentrated solution circulation to be continued to separate;
(6), partly send into electroplate liquid accumulator tank 7 concentrated solution in the equalizing tank 3 with through the waste water mixture that pH value is regulated, be configured to new electroplate liquid after circulation send into plating tank 1 reuse, thereby realize the zero release of electroplating wastewater processing.
Membrane integrating technique is used for electroplating wastewater processing not only can cause secondary pollution, but also reclaimed the harmful heavy metal in the waste water, turn waste into wealth, water resources is reused, membrane treatment process provides the solution of " green " as a kind of brand-new processing electroplating rinse water technology for the electroplate rinsing water treatment.
The above only is a preferred embodiment of the present utility model, is not to be used for limiting the utility model, and all its similar embodiment and proximate structure all should be covered by the protection domain of the utility model patent.
Claims (1)
1. the membrane separation unit of industrial wastewater treatment zero draining, comprise plating tank, receiving tank, equalizing tank, strainer, the electroplate liquid accumulator tank, the rinse bath of plating piece or pure water storage tanks, plating tank, receiving tank, equalizing tank and strainer are production technique in regular turn and link together, equalizing tank and electroplate liquid accumulator tank are production technique and link together, electroplate liquid accumulator tank and plating tank are production technique and link together, it is characterized in that: also comprise membrane module, the useful polymer permeable membrane of design becomes lotus positive polarity separatory membrane, equalizing tank through compound ammonification again in described membrane module, strainer, the rinse bath of plating piece or pure water storage tanks are production technique with membrane module respectively and link together.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200920260850XU CN201598198U (en) | 2009-11-21 | 2009-11-21 | Membrane separation device for zero-discharge industrial wastewater treatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200920260850XU CN201598198U (en) | 2009-11-21 | 2009-11-21 | Membrane separation device for zero-discharge industrial wastewater treatment |
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| CN201598198U true CN201598198U (en) | 2010-10-06 |
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| CN200920260850XU Expired - Fee Related CN201598198U (en) | 2009-11-21 | 2009-11-21 | Membrane separation device for zero-discharge industrial wastewater treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455765A (en) * | 2022-02-11 | 2022-05-10 | 广东中青环境工程有限公司 | Electroplating liquid membrane separation and recovery technical equipment and recovery method thereof |
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2009
- 2009-11-21 CN CN200920260850XU patent/CN201598198U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455765A (en) * | 2022-02-11 | 2022-05-10 | 广东中青环境工程有限公司 | Electroplating liquid membrane separation and recovery technical equipment and recovery method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20171121 |