CN202415304U - Wastewater treatment device for electroplating concentration area - Google Patents
Wastewater treatment device for electroplating concentration area Download PDFInfo
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- CN202415304U CN202415304U CN2011204440695U CN201120444069U CN202415304U CN 202415304 U CN202415304 U CN 202415304U CN 2011204440695 U CN2011204440695 U CN 2011204440695U CN 201120444069 U CN201120444069 U CN 201120444069U CN 202415304 U CN202415304 U CN 202415304U
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- pipeline
- tank
- microfiltration membrane
- regulating tank
- neutralizing well
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Abstract
The utility model relates to a wastewater treatment device for an electroplating concentration area, which includes a chemical reaction treatment device and a microfiltration membrane solid-liquid separation device. The chemical reaction treatment device includes a comprehensive wastewater regulating tank, a chromium-containing wastewater regulating tank, a chromium reduction tank, a nickel-containing wastewater regulating tank, a cyanide-containing wastewater regulating tank, cyanide breaking tanks, neutralizing tanks, an intermediate tank and a concentration tank; the microfiltration membrane solid-liquid separation device includes a microfiltration membrane running device, a microfiltration membrane cleaning device, a terminal pH regulating tank, a discharge tank and a filter pressing device; the comprehensive wastewater regulating tank (1) is lifted to a first neutralizing tank (7) by a lift pump (5) through a pipeline; the chromium-containing wastewater regulating tank (2) is connected with the chromium reduction tank (6) through a bottom pipeline, and the bottom of the chromium reduction tank (6) is connected with the first neutralizing tank (7) through a pipeline; and the nickel-containing wastewater regulating tank (3) is connected with a third neutralizing tank (11) through a pipeline. The whole system utilizes the microfiltration membrane solid-liquid separation device and dispenses with a sedimentation tank, a sand filtration canister, a charcoal filtration canister and the like; wastewater directly enters the concentration tank after reaction, and is sent to the microfiltration membrane solid-liquid separation device from the concentration tank; and production expansion only needs a larger number of membrane groups. Microfiltration membrane is used as the microfiltration membrane solid-liquid separation material, so that the complex process of ultrafiltration membrane backwashing is avoided, and all that is needed is normal washing by high-pressure water.
Description
Technical field
The utility model relates to a kind of plating concentration zones wastewater treatment equipment, specifically, relates to a kind of device that is used to handle chromate waste water, nickel-containing waste water, cyanide wastewater and comprehensive wastewater that Treatment of Industrial Park of Plating produces.
Background technology
Electroplating technology is the processing of functional, the ornamental and protective that carries out at some substrate surface; Electroplating technology is very important in economic society now; But consequent electroplating wastewater can cause severe contamination to receive the great attention of governments at all levels to environment, people, animal because of it contains plurality of heavy metal.
After electroplating enterprise was concentrated, the handling problem of all kinds of electroplating wastewaters became industrial upgrading and electroplates the key that concentration zones is built.Plating concentration zones waste water is mainly derived from rinsing, passivation, the pickling of all kinds of platings, scrubs terrace and pole plate, and the waste water such as " run, drip, leak " that produces in the operating process.Press the contained principal pollutant of waste water, mainly be divided into chromate waste water, cyanide wastewater, nickel-containing waste water and be main comprehensive wastewater with acidity.
At present, the treatment unit of plating concentration zones waste water mainly contains ion exchange unit, ferrite device, chemical precipitation device, electrolyzer, absorbent charcoal adsorber, membrane separation unit etc.Wherein, Membrane separation unit is through specific osmosis; Effect by means of pressure or chemical potential difference; To each component separate, the device of enrichment and purification, characteristics such as that this device has is efficient, energy-conservation, technology is easy, less investment, pollution are little, the key that membrane separation unit is handled electroplating wastewater is to select suitable membrane according to separation condition.Because it is various to electroplate the concentration zones kind of waste water, composition is not quite similar, so generally adopt above-mentioned two or more devices combination to use.The combination of chemical precipitation and membrane separation unit; Principle is simple, method is reliable, and processing cost is low, and the most of waste water after handling can reuse; Water rate and effluent charge have been saved; The valency heavy metal that has in the waste water also can obtain reclaiming, and has both met the theory of recycling economy, has also realized galvanized cleaner production.
The utility model content
The purpose of the utility model is to above-mentioned shortcoming a kind of device of chromate waste water, nickel-containing waste water, cyanide wastewater and comprehensive wastewater being shunted processing to be provided.
The technical scheme of the utility model is: a kind of plating concentration zones wastewater treatment equipment, form by chemical reaction treatment unit and microfiltration membrane equipment for separating liquid from solid; Said chemical reaction treatment unit comprises comprehensive wastewater regulating tank, chromate waste water regulating tank, chromium reducing bath, nickel-containing waste water regulating tank, cyanide wastewater regulating tank, broken cyanide groove, first neutralizing well, second neutralizing well, the 3rd neutralizing well, medial launder and thickener; Said microfiltration membrane equipment for separating liquid from solid comprises microfiltration membrane running gear, microfiltration membrane washing unit, terminal pH regulator groove, release groove and filter-pressing device.Described comprehensive wastewater regulating tank rises to first neutralizing well by lift pump through pipeline; Described chromate waste water regulating tank connects the chromium reducing bath through the bottom pipeline, and chromium reducing bath bottom connects first neutralizing well through pipeline; Described nickel-containing waste water regulating tank connects the 3rd neutralizing well through pipeline; Described cyanide wastewater regulating tank connects the broken cyanide groove through pipeline, and the broken cyanide groove connects the 3rd neutralizing well through the bottom pipeline; First neutralizing well is connected second neutralizing well with the 3rd neutralizing well through the bottom pipeline; Second neutralizing well connects medial launder through pipeline; Medial launder connects thickener through pipeline, and thickener is connected to the microfiltration membrane equipment for separating liquid from solid through pipeline, and thickener connects filter-pressing device through pipeline.
Preferably: the overflow water outlet is established on described medial launder cell wall top, and overflowing liquid gets into thickener.
Preferably: described wastewater treatment equipment comprises the drug storage groove, and the drug storage groove links to each other with each neutralizing well through pipeline, and is provided with lift pump, realizes the dosing process, and the drug storage groove is connected to the thickener top, adds gac and heavy metal chelating agent.
Preferably: described microfiltration membrane equipment for separating liquid from solid, connect terminal pH regulator groove at its water outlet, be connected with stirrer above the regulating tank, regulating tank cell wall top is communicated with the groove of releasing.
Preferably: the microfiltration membrane aperture that described microfiltration membrane equipment for separating liquid from solid adopts is 0.1 micron.
Preferably: said apparatus adopts the PLC automatic control system, and this system is made up of man-machine interface, PLC sequence of control and field instrument equipment.
The beneficial effect of the utility model is: utilize the microfiltration membrane equipment for separating liquid from solid in the total system; Need not to establish in addition settling tank, sandfiltration pot, charcoal filter tank etc.; Waste water directly gets into concentration basin after reacting; Be delivered in the microfiltration membrane equipment for separating liquid from solid by concentration basin, only need increase film group quantity to get final product if expand production.The employing microfiltration membrane can be avoided the complicated procedures of forming with the ultra-filtration membrane back flushing as microfiltration membrane solid-liquid separation material, only need just wash with high pressure water to get final product.The material of film pipe itself is pvdf (PVDF), can bear 10% the strong acid-base and the impact of 10% strong oxidizer.The film convenient disassembly does not receive the puzzlement of factory's resettlement.Waste water after the processing can direct reuse in production line, recycle economizes on resources, the protection environment.System adopts the proprietary sequence of control of PLC to realize fully automatic operation, has reduced manual operation.PLC has very strong extensibility, and the later stage increases the cable connection and can increase control task.
Description of drawings
Fig. 1 is the structural representation of the utility model
Embodiment
Embodiment below in conjunction with description of drawings the utility model:
A kind of plating concentration zones wastewater treatment equipment is made up of chemical reaction treatment unit and microfiltration membrane equipment for separating liquid from solid; Said chemical reaction treatment unit comprises comprehensive wastewater regulating tank 1, chromate waste water regulating tank 2, chromium reducing bath 6, nickel-containing waste water regulating tank 3, cyanide wastewater regulating tank 4, broken cyanide groove 9,10, first neutralizing well 7, second neutralizing well 8, the 3rd neutralizing well 11, medial launder 12 and thickener 13; Said microfiltration membrane equipment for separating liquid from solid comprises microfiltration membrane running gear 14, microfiltration membrane washing unit 15, terminal pH regulator groove 16, release groove 17 and filter-pressing device 18.
Described comprehensive wastewater regulating tank 1 rises to first neutralizing well 7 by lift pump 5 through pipeline; Described chromate waste water regulating tank 2 connects chromium reducing bath 6 through the bottom pipeline, and chromium reducing bath 6 bottoms connect first neutralizing well 7 through pipeline; Described nickel-containing waste water regulating tank 3 connects the 3rd neutralizing well 11 through pipeline; Described cyanide wastewater regulating tank 4 connects broken cyanide groove 9,10 through pipeline, and broken cyanide groove 9,10 connects the 3rd neutralizing well 11 through the bottom pipeline; First neutralizing well 7 is connected second neutralizing well 8 with the 3rd neutralizing well 11 through the bottom pipeline; Second neutralizing well 8 connects medial launder 12 through pipeline; Medial launder 12 connects thickener 13 through pipeline; Thickener 13 is connected to the microfiltration membrane equipment for separating liquid from solid through pipeline, and thickener 13 connects filter-pressing device 18 through pipeline.
The overflow water outlet is established on described medial launder 12 cell wall tops, and overflowing liquid gets into thickener 10.
Described wastewater treatment equipment comprises the drug storage groove; The drug storage groove links to each other, and is provided with lift pump, realization dosing process through pipeline and each first neutralizing well 7, second neutralizing well 8, the 3rd neutralizing well 11; The drug storage groove is connected to thickener 13 tops, adds gac and heavy metal chelating agent.
Above-mentioned employed gac is that shell etc. is processed after charing and activation; Loading capacity is big; Filtration velocity is fast; It has very big specific surface area, can adsorb a lot of pollutents such as organic pollutant and metals ion in the waste water, can be used as the auxiliary sorbent material of microfiltration membrane and has the effect of cleaning film concurrently.
Above-mentioned used heavy metal trapping agent mainly is Na3T-15 and Na3T-thexa, and the staple of Na3T-15 is a kind of triazines component, and it can precipitate nearly all unit price and divalent heavy metal ion, like Ag
+, Hg
2+, Cu
2+, Cd
2+, pb
2+, Ni
2+, Sn
2+, As
2+, Zn
2+, Mn
2+Deng, Na3T-thexa is the basis with the Na3T-15 product, adds a kind of NEW TYPE OF COMPOSITE heavy metal chelating agent product that other various compositions that can be used for the heavy metal processing develop.Handle at Na3T-15 on the heavy metal bases such as Hg, Cu, Cd, Ag, Pb, Ni, Sn, Na3T-thexa can also effectively handle masty Cr
6+, Cr
3+, heavy metal such as Zn, Mn.
Described microfiltration membrane equipment for separating liquid from solid connects terminal pH regulator groove 16 at its water outlet, is connected with stirrer above the regulating tank 16, and regulating tank 16 cell wall tops are communicated with the groove 17 of releasing.The groove 17 of releasing is provided with convenient monitoring in order to store clear water, and water outlet makes draining up to standard through dosing after getting into terminal pH regulator groove 16, and overflow is to releasing groove 17, and the groove 17 of releasing connects water shoot.
Described microfiltration membrane is a kind of tubular membrane of laterally holding back, 0.1 micron in aperture, and material is hard and have good resistance to chemical attack, and be mainly used in solid-liquid separation to waste water more than 5 years work-ing life.The cleaning of this microfiltration membrane is convenient, and cleaning frequency is low, only need at a distance from 2 weeks or 2 months not equal time wash with soda acid and oxygenant forward and can remove pollutent.The film pipe adopts high strength linepipe, the highest pressure of 120psi and 43 ℃ the temperature of bearing, and the nozzle diameter 25mm of film, easy cleaning, maintenance cost is low, operation cost is low, long service life.Film water outlet SDI value (pollution index) generally is lower than 2, can directly advance the RO film, has prolonged the work-ing life of reverse osmosis membrane (RO).
Said apparatus adopts the PLC automatic control system, and this system is made up of man-machine interface, PLC sequence of control and field instrument equipment.
This device is made up of chemical reaction treatment unit and microfiltration membrane equipment for separating liquid from solid, mainly is to handle to electroplating concentration zones waste water, and detailed process is:
Comprehensive wastewater gets into the comprehensive wastewater regulating tank, gets into neutralizing well through pipeline then, hydro-oxidation sodium, and the pH value of accurately being regulated waste water by automatic control system is 8.5, makes heavy metal ion form throw out.
Chromate waste water gets into the chromate waste water regulating tank, gets into the chromium reducing bath through pipeline, at first chromate waste water is used the pyrosulphite sodium reduction; Under acidic conditions; Add reduction dosage by automatic controlling system, the pH value of accurately regulating waste water is 2.5, and the ORP value is 280mv; Hexavalent chromium in the waste water is reduced to trivalent chromium
2Cr
2O
7 2-+3S
2O
5 2-+10H
+→4Cr
3++6SO
4 2-+5H
2O
Get into first neutralizing well 7 through pipeline then, add alkali and make it to generate precipitation of hydroxide.
Cr
3++3OH
-→Cr(OH)
3↓
Nickel-containing waste water gets into the nickel-containing waste water regulating tank, directly gets into the 3rd neutralizing well 11 through pipeline, adds sodium hydroxide, is 9.5 by the pH value of automatic control system through accurate adjusting waste water, makes heavy metal ion formation throw out.
Cyanide wastewater gets into the cyanide wastewater regulating tank, gets into one-level broken cyanide groove through pipeline, adds alkali pH=11 is set, and adds NaClO again, makes the CN of severe toxicity
-Be oxidized to cyanate:
CN-+ClO
-+H
2O→CNCl+2OH
-
CNCl+2OH
-→CNO
-+Cl
-+H
2O
The water outlet of one-level broken cyanide groove gets into secondary broken cyanide groove, adds NaClO when automatic control system is provided with pH=8.5 once more, and completely destroy C-N key makes it totally nontoxic:
2CNO
-+3ClO
-→CO
2↑+N
2↑+3Cl
-+CO
3 2-
Cyanogen in the waste water is decomposed the back by exhaustive oxidation and gets into the 3rd neutralizing well 11 through pipeline.
The water outlet of first neutralizing well 7, the 3rd neutralizing well 11 all is passed into second neutralizing well 8, further finely tunes pH, between each road pipeline lift pump is set all.Second neutralizing well 8 connects medial launder through pipeline, and the overflow water outlet is established on the cell wall top of medial launder, and mud mouth is established in the medial launder bottom, and each road waste water leaves standstill stable at medial launder, and overflowing liquid flow to thickener.Medial launder links to each other with thickener through riser, and the thickener upper end connects two chemical feed pipes, carries activated carbon tube and heavy metal chelating agent from the drug storage groove respectively by lift pump.Gac is as the auxiliary sorbent material of microfiltration membrane and have the effect of cleaning film concurrently, and heavy metal chelating agent is only can not sedimentary heavy metal ion through pH regulator in order further to catch.
Waste water is transported to the film reaction device by lift pump from thickener, and through the solid-liquid separation effect of microfiltration membrane, the output clear water enters into terminal pH regulator groove, and dense water is delivered to the thickener circulation.0.1 micron of microfiltration membrane fenestra; Can 100% hold back suspended substance, membrane material is pvdf (PVDF), acid and alkali-resistance and strong oxidizer; When the flux of film drops to a certain degree, only need the acid with 10%, 10% alkali, 10% Youxiaolin and the flushing of water forward can recover flux fully.The work-ing life of microfiltration membrane is up to more than 5 years.
Water outlet enters into terminal pH regulator groove, and stirrer is housed above the regulating tank, through adding acid adjustment pH to emission standard; Riser is established on regulating tank cell wall top, is communicated with the groove of releasing, and regulating tank upper strata liquid gets into the groove of releasing; The groove of releasing is used for storing clear water and monitors water quality, and the groove of releasing connects water shoot.The dosing process of terminal pH regulator groove is all by the PLC automatic controlling system, record the pH value of reactor drum by the pH appearance after, signal conveys to system, and is shown on computers, regulate the pH value in 7.5 ± 0.2 scopes.
Water-quality guideline after chemical reaction and the processing of microfiltration membrane equipment for separating liquid from solid is:
Total nickel＜0.5mg/L, total chromium＜1.0mg/L, sexavalent chrome＜0.2mg/L, total cyanide＜0.3mg/L, SS＜50mg/L, pH=6-9.
When the sludge concentration in the thickener acquires a certain degree, be evacuated to pressure filter by sludge pump and carry out filter-press dehydration, the mud outward transport, filtrating gets into thickener and participates in circulation.
The above embodiment that lifts only uses to conveniently illustrating the utility model, and at the said technical scheme category of the utility model, the person of ordinary skill in the field does various simple deformation and modification, all should be included in the above claim.
Claims (4)
1. electroplate the concentration zones wastewater treatment equipment for one kind, form by chemical reaction treatment unit and microfiltration membrane equipment for separating liquid from solid; It is characterized in that: said chemical reaction treatment unit comprises comprehensive wastewater regulating tank (1), chromate waste water regulating tank (2), chromium reducing bath (6), nickel-containing waste water regulating tank (3), cyanide wastewater regulating tank (4), broken cyanide groove (9,10), first neutralizing well (7), second neutralizing well (8), the 3rd neutralizing well (11), medial launder (12) and thickener (13); Said microfiltration membrane equipment for separating liquid from solid comprises microfiltration membrane running gear (14), microfiltration membrane washing unit (15), terminal pH regulator groove (16), the groove of releasing (17) and filter-pressing device (18); Described comprehensive wastewater regulating tank (1) rises to first neutralizing well (7) by lift pump (5) through pipeline; Described chromate waste water regulating tank (2) connects chromium reducing bath (6) through the bottom pipeline, and chromium reducing bath (6) bottom connects first neutralizing well (7) through pipeline; Described nickel-containing waste water regulating tank (3) connects the 3rd neutralizing well (11) through pipeline; Described cyanide wastewater regulating tank (4) connects broken cyanide groove (9,10) through pipeline, and broken cyanide groove (9,10) connects the 3rd neutralizing well (11) through the bottom pipeline; First neutralizing well (7) is connected second neutralizing well (8) with the 3rd neutralizing well (11) through the bottom pipeline; Second neutralizing well (8) connects medial launder (12) through pipeline; Medial launder (12) connects thickener (13) through pipeline; Thickener (13) is connected to the microfiltration membrane equipment for separating liquid from solid through pipeline, and thickener (13) connects filter-pressing device (18) through pipeline.
2. plating concentration zones wastewater treatment equipment as claimed in claim 1; It is characterized in that: described wastewater treatment equipment comprises the drug storage groove; The drug storage groove links to each other with first neutralizing well (7), second neutralizing well (8), the 3rd neutralizing well (11) through pipeline; The drug storage groove is provided with lift pump, and the drug storage groove is connected to thickener (13) top.
3. plating concentration zones wastewater treatment equipment as claimed in claim 1; It is characterized in that: described microfiltration membrane equipment for separating liquid from solid; Connect terminal pH regulator groove (16) at its water outlet; Be connected with stirrer above the terminal pH regulator groove (16), terminal pH regulator groove (16) cell wall top is provided with riser and is communicated with the groove (17) of releasing.
4. plating concentration zones wastewater treatment equipment as claimed in claim 1 is characterized in that: the microfiltration membrane aperture that described microfiltration membrane equipment for separating liquid from solid is adopted is 0.1 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204440695U CN202415304U (en) | 2011-11-11 | 2011-11-11 | Wastewater treatment device for electroplating concentration area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204440695U CN202415304U (en) | 2011-11-11 | 2011-11-11 | Wastewater treatment device for electroplating concentration area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202415304U true CN202415304U (en) | 2012-09-05 |
Family
ID=46740086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204440695U Expired - Fee Related CN202415304U (en) | 2011-11-11 | 2011-11-11 | Wastewater treatment device for electroplating concentration area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202415304U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626339A (en) * | 2013-12-19 | 2014-03-12 | 诸暨泓泰环境科技有限公司 | Electroplating wastewater treatment system |
| CN103723814A (en) * | 2013-12-17 | 2014-04-16 | 绍兴水处理发展有限公司 | Strong-acid chemical waste water treatment device and technology |
| CN104060301A (en) * | 2014-05-08 | 2014-09-24 | 昆明有色冶金设计研究院股份公司 | System and method for treating waste electrolyte |
| CN104060301B (en) * | 2014-05-08 | 2016-11-30 | 昆明有色冶金设计研究院股份公司 | A kind of waste electrolyte processing system and method |
| CN116446026A (en) * | 2023-03-17 | 2023-07-18 | 江门市顺高电镀有限公司 | Efficient and environment-friendly hardware electroplating treatment system and process |
-
2011
- 2011-11-11 CN CN2011204440695U patent/CN202415304U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723814A (en) * | 2013-12-17 | 2014-04-16 | 绍兴水处理发展有限公司 | Strong-acid chemical waste water treatment device and technology |
| CN103723814B (en) * | 2013-12-17 | 2015-07-29 | 绍兴水处理发展有限公司 | Strongly-acid chemical wastewater treatment device and technique |
| CN103626339A (en) * | 2013-12-19 | 2014-03-12 | 诸暨泓泰环境科技有限公司 | Electroplating wastewater treatment system |
| CN104060301A (en) * | 2014-05-08 | 2014-09-24 | 昆明有色冶金设计研究院股份公司 | System and method for treating waste electrolyte |
| CN104060301B (en) * | 2014-05-08 | 2016-11-30 | 昆明有色冶金设计研究院股份公司 | A kind of waste electrolyte processing system and method |
| CN116446026A (en) * | 2023-03-17 | 2023-07-18 | 江门市顺高电镀有限公司 | Efficient and environment-friendly hardware electroplating treatment system and process |
| CN116446026B (en) * | 2023-03-17 | 2023-10-27 | 江门市顺高电镀有限公司 | Efficient and environment-friendly hardware electroplating treatment system and process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20151111 |
|
| EXPY | Termination of patent right or utility model |