CN202594910U - Zero-discharge concentrating treatment system for basic zinc electroplating wastewater - Google Patents
Zero-discharge concentrating treatment system for basic zinc electroplating wastewater Download PDFInfo
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- CN202594910U CN202594910U CN 201220153332 CN201220153332U CN202594910U CN 202594910 U CN202594910 U CN 202594910U CN 201220153332 CN201220153332 CN 201220153332 CN 201220153332 U CN201220153332 U CN 201220153332U CN 202594910 U CN202594910 U CN 202594910U
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- China
- Prior art keywords
- concentrating
- electroplating wastewater
- zero
- alkali zinc
- pipeline
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Abstract
The utility model discloses a zero-discharge concentrating treatment system for basic zinc electroplating wastewater. The system comprises a basic zinc wastewater collecting pool, a concentrating pool, a circulating pump, a tetramercuriated fluorescein (TMF) filter device, a water purification tank, a 5mu security filter, a reverse osmosis (RO) concentrating system, an RO concentrating water tank, an evaporator, a first pH regulating device and a second pH regulating device, wherein the TMF filter device is returned to the concentrating pool through the other pipeline. The system is simple, has a good treatment effect on the basic zinc electroplating wastewater, and can realize zero discharge of the electroplating wastewater.
Description
Technical field
The utility model relates to a kind of alkali zinc electroplating wastewater zero concentrating and treating system.
Background technology
Plating is exactly to utilize electrolysis principle to plate layer of metal or alloy at metal or other surfaces, to realize the raising of material property, like the lifting of corrosion resistance nature.
Electroplating wastewater is to electroplate the waste water that factory discharges, and because of the difference of production technique, the electroplating wastewater that has contains chromium, and what have then contains cadmium, contains acid, contains alkali etc., and what the heavy metal ion in the electroplating wastewater had exists with simple cationic form, like Ni
2+, contain negatively charged ion in the electroplating wastewater that has, like CN with coordination ability
-So the positively charged ion in these electroplating wastewaters often exists with the form of complex cation, like Cd (CN)
-In addition, in electroplating wastewater, often also contain organic additive.
Alkali zinc waste water if not non-cyanogen galvanization, then contains Zn in the electroplating wastewater
2+, Zn (CN)
4 2-, CN
-Deng, these materials are very harmful to environment and human body, because cryanide ion has superpower complex ability; After getting into human body, its meeting and combine with ferric iron in the oxidized form Terminal oxidase stops it to be reduced into ferrous iron; Cause the histocyte anoxic, thus threat to life.
The existing technical process of handling alkali zinc electroplating wastewater mainly is: former pond → former water topping-up pump → disc filter → charcoal absorption system → full-automatic ultrafiltration system → intermediate water tank → middle water pump → security personnel's strainer → full-automatic reverse osmosis system (containing washing unit) → water reservoir.
The shortcoming of prior art scheme has: reverse osmosis concentrated water discharges, and can't reach the purpose of wastewater zero discharge.Contain various heavy metal ion and a large amount of recyclable salts in the reverse osmosis concentrated water.Reverse osmosis system has only one-level, and the reuse water yield is limited, and the dense water yield is big.
The utility model content
The purpose of the utility model provides a kind of alkali zinc electroplating wastewater zero concentrating and treating system.
The technical scheme that the utility model is taked is:
A kind of alkali zinc electroplating wastewater zero concentrating and treating system, it comprises that the alkali zinc wastewater collecting basin that connects successively through pipeline, concentrated pond, recycle pump, TMF filtration unit, cleaned water tank, 5 μ security personnel strainer, one-level RO concentration systems, secondary RO concentration systems, secondary RO concentrate water tank, vaporizer; Said TMF filtration unit returns through another pipeline and links concentrated pond; Also comprise the first pH regulator device, the second pH regulator device.
The said first pH regulator device is communicated on alkali zinc wastewater collecting basin and the pipeline that concentrated pond links to each other.
The said second pH regulator device is connected on the said cleaned water tank.
Described concentrated pond also is connected to pressure filter through pipeline.
The beneficial effect of the utility model is: the system of the utility model constitutes simple, to alkali zinc electroplating wastewater treatment effect is preferably arranged, and can realize the zero release of electroplating wastewater.The system of the utility model constitutes simple, and is with low cost, can reclaim salt simultaneously.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model.
Embodiment
As shown in Figure 1; The alkali zinc electroplating wastewater zero concentrating and treating system of the utility model, it comprises that the alkali zinc wastewater collecting basin 1 that connects successively through pipeline, concentrated pond 2, recycle pump 3, TMF filtration unit 4, cleaned water tank 5,5 μ security personnel strainer 6, one-level RO concentration systems 7, secondary RO concentration systems 13, secondary RO concentrate water tank 8, vaporizer 9; Said TMF filtration unit 4 returns to link through another pipeline and concentrates pond 2; Also comprise the first pH regulator device 10, the second pH regulator device 11.
The said first pH regulator device 10 is communicated on alkali zinc wastewater collecting basin 1 and the pipeline that concentrated pond 2 links to each other.
The said second pH regulator device 11 is connected on the said cleaned water tank 5.
Described concentrated pond 2 also is connected to pressure filter 14 through pipeline.
Native system also comprises a PLC electrical control system 12, the whole control of its realization to total system.
The alkali zinc waste water that alkali zinc wastewater collecting basin 1 is collected through pre-treatment; Through the first pH regulator device 10 wastewater pH is adjusted to alkalescence (pH9-12); In water collecting basin; The suspended substance of comparatively large vol is able to deposition; Concentrate pond 2 and then can precipitate the mud in the waste water that reflux and that water collecting basin enters of process TMF filtration unit 4 backs, the supernatant that concentrates in the pond 2 pumps into TMF filtration unit 4 through recycle pump 3, and the mud in the concentrated pond 2 is then sent into and carried out solid-liquid separation in the pressure filter 14; Filtering out water after the partial impurities through TMF filtration unit 4 then gets into and stores in the cleaned water tank 5 and regulate pH to neutral through the second pH regulator device 11; Water in the cleaned water tank 5 is to hold back the particle greater than 5 μ m that former water brings by the effect that the suction topping-up pump pumps into 5 μ security personnel strainer, 6,5 μ security personnel strainer 6 then, gets into reverse osmosis system to prevent it.Filter unit in security personnel's strainer is replaceable import filter core, and the absolute precision of this filter core is 5 μ m, adopts the unique seal mode, can not be short-circuited or leak, and be easy to change.Security personnel's strainer adopts corrosion resistant 304 stainless steel shells; Filter stick adopts 5 μ m flat-crushing type filter cores, and the water after filtering through 5 μ security personnel strainer 6 continues to be pumped to 7 dehydrations of one-level RO concentration systems and concentrates, and dehydration rate is 60-70%; Continuing to be pumped to 13 dehydrations of secondary RO concentration systems through the water after concentrating concentrates; Dehydration rate is 45-55%, then gets into secondary RO through the dense water after concentrating and concentrates water tank 8, gets into vaporizer 9 evaporations at last and reclaims salt.
In the native system, the technical indicator of RO concentration systems is:
Membranous type: press mold in 8 cun high density antipollutions
Brand: LG-DOW FILMTEC
TM
Pressurized vessel: 300psi
Material: glass reinforced plastic
The place of production: Jiangsu
Maximum operating temperature: 45 ℃
Water inlet chlorine residue: < 0.1PPM
Index: SDI < 5 is silted in water inlet up
Through after the system handles of the utility model, can realize the zero release of alkali zinc electroplating wastewater, remove the COD in the electroplating wastewater, reach relevant emission standard.
Claims (4)
1. alkali zinc electroplating wastewater zero concentrating and treating system is characterized in that: it comprises the alkali zinc wastewater collecting basin that connects successively through pipeline, concentrates the pond, recycle pump, TMF filtration unit, cleaned water tank, 5 μ security personnel strainer, one-level RO concentration systems, secondary RO concentration systems, secondary RO concentrate water tank, vaporizer; Said TMF filtration unit returns through another pipeline and links concentrated pond; Also comprise the first pH regulator device, the second pH regulator device.
2. a kind of alkali zinc electroplating wastewater zero concentrating and treating system according to claim 1 is characterized in that: the said first pH regulator device is communicated on alkali zinc wastewater collecting basin and the pipeline that concentrated pond links to each other.
3. a kind of alkali zinc electroplating wastewater zero concentrating and treating system according to claim 1, it is characterized in that: the said second pH regulator device is connected on the said cleaned water tank.
4. a kind of alkali zinc electroplating wastewater zero concentrating and treating system according to claim 1, it is characterized in that: described concentrated pond also is connected to pressure filter through pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153332 CN202594910U (en) | 2012-04-12 | 2012-04-12 | Zero-discharge concentrating treatment system for basic zinc electroplating wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220153332 CN202594910U (en) | 2012-04-12 | 2012-04-12 | Zero-discharge concentrating treatment system for basic zinc electroplating wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202594910U true CN202594910U (en) | 2012-12-12 |
Family
ID=47312468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220153332 Expired - Fee Related CN202594910U (en) | 2012-04-12 | 2012-04-12 | Zero-discharge concentrating treatment system for basic zinc electroplating wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202594910U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071925A (en) * | 2014-07-14 | 2014-10-01 | 东莞汇金环境科技有限公司 | Zero-drainage treatment system and zero-drainage treatment method for nickel plating wastewater in steel workshop |
| CN105948327A (en) * | 2016-06-26 | 2016-09-21 | 福建碧蓝环保股份公司 | Wastewater zero discharging treatment integrated equipment |
-
2012
- 2012-04-12 CN CN 201220153332 patent/CN202594910U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071925A (en) * | 2014-07-14 | 2014-10-01 | 东莞汇金环境科技有限公司 | Zero-drainage treatment system and zero-drainage treatment method for nickel plating wastewater in steel workshop |
| CN105948327A (en) * | 2016-06-26 | 2016-09-21 | 福建碧蓝环保股份公司 | Wastewater zero discharging treatment integrated equipment |
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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: 20121212 Termination date: 20190412 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |