CN205420000U - Chemical nickel plating effluent treatment plant - Google Patents
Chemical nickel plating effluent treatment plant Download PDFInfo
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- CN205420000U CN205420000U CN201620192992.7U CN201620192992U CN205420000U CN 205420000 U CN205420000 U CN 205420000U CN 201620192992 U CN201620192992 U CN 201620192992U CN 205420000 U CN205420000 U CN 205420000U
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Abstract
The utility model discloses a chemical nickel plating effluent treatment plant, it includes effluent disposal system and nickel recovery system. Effluent disposal system includes chemical nickel plating wastewater collection pond, reaction tank, elevator pump, multi -media filter, heavy metal adsorption ware and discharges the relaying pond, nickel recovery system mainly include nickeliferous concentrate collecting vat, precipitation tank and vacuum dryer. When the device guarantees to stablize standard treatment chemical nickel plating waste water, can also retrieve the nickel ion in the chemical nickel plating waste water, and the rate of recovery is high, has good economic benefits and environmental benefit.
Description
Art
This utility model belongs to Industrial Wastewater Treatment and the technical field that is recycled, and relates to the processing means of a kind of chemical nickle-plating wastewater.
Background technology
Chemical plating is also called " electroless plating " and " self-catalysis plating "; it it is the interpolation nickel salt such as the reducing agent such as sodium hypophosphite, sodium borohydride and nickel sulfate in solution; utilize the reduction of reducing agent, the nickel ion in plating solution is reduced to nickle atom, and in the process of plating piece surface formation of deposits protective layer.Chemical nickle-plating wastewater pollutant kind is many, complicated, especially adds some chelating agent in nickel chemical plating technology, forms more stable complex with nickel ion.The processing methods such as the neutralization precipitation of routine, coagulation are used to have limitation to complexation nickel clearance, it is difficult to guarantee the qualified discharge of heavy metal ion.In addition environmental requirement is more and more stricter, the ground such as Guangdong require that electroplating industry performed " plating pollutant emission standard " (GB21900-2008) table 3 standard in 2014 in succession, this just further increases the difficulty that chemical nickle-plating wastewater is up to standard, the most directly threatens the existence of enterprise.
For chemical nickle-plating wastewater processes, can first kinds of pollution matter nickel be processed up to standard it is crucial that can the complexation nickel in waste water be effectively abolished.Meanwhile, part chelating agent is also Organic substance, causes the COD of waste water, ammonia nitrogen equal size the highest.The most commonly used heavy metal containing wastewater treatment method is the chemical precipitation methods such as hydroxide, sulfide, but they are little to the treatment effect of complexation nickel waste water.And additive method such as electroosmose process, membrane filtration etc. generally exist the problems such as equipment investment is high, operation is complicated, operation and maintenance cost is high, limit its application in practice.Therefore, find a kind of low cost, high efficiency chemical nickle-plating wastewater treatment technology has using value very much.
Utility model content
In order to solve deficiencies of the prior art, the utility model proposes the processing means of a kind of chemical nickle-plating wastewater.
A kind of chemical nickle-plating wastewater processing means, is characterized in that chemical nickle-plating wastewater collecting pit, reaction tank, elevator pump, more medium filter, heavy metal adsorption device, discharge relaying pond and nickel recovery system that described processing means includes being sequentially connected with.
Described heavy metal adsorption device uses multiple structure, and including heavy metal adsorption device cylinder, heavy metal adsorption device cylinder divides three layers, and centre separates with dividing plate.Between fill ion-exchange fibre；Described ion-exchange fibre is selected containing sulfonate functional groups or carboxylic functional groups, and fibrous matrix uses polypropylene fibre or polyacrylonitrile fibre, and irradiated grafting or chemical graft are made.
A kind of chemical nickle-plating wastewater processing means that this utility model provides, is collected in special chemical nickle-plating wastewater collecting pit by the chemical nickle-plating wastewater that factory floor produces；Chemical nickle-plating wastewater in described chemical nickle-plating wastewater collecting pit enters reaction tank by gravity flow, regulation pH to about 3, add oxidant hydrogen peroxide, its mix homogeneously is made by mechanical agitation, after oxidation reaction 3 hours, pump into more medium filter by lifting, filter the impurity in described chemical nickle-plating wastewater；Going deimpurity chemical nickle-plating wastewater to be passed through heavy metal adsorption device by described, the chemical nickle-plating wastewater described in adsorption treatment, in water outlet after treatment, the concentration of nickel is less than 0.1mg/L, reaches discharge standard and directly discharges.This utility model reduces the processing cost of chemical nickle-plating wastewater, while being effectively reduced environmental pollution, improves economic benefit, has good promotion prospect.
Accompanying drawing explanation
Fig. 1 is this utility model chemical nickle-plating wastewater processing means structural representation；
Fig. 2 is this utility model heavy metal adsorption device structural representation；
Detailed description of the invention
With detailed description of the invention, this utility model is described further below in conjunction with the accompanying drawings.
A kind of chemical nickle-plating wastewater processing means is as it is shown in figure 1, include chemical nickle-plating wastewater collecting pit 1, reaction tank 2, elevator pump 3, more medium filter 4, heavy metal adsorption device 5, discharge relaying pond 6 and nickel recovery system 7.Described heavy metal adsorption device 5 uses multiple structure, as in figure 2 it is shown, include 50,4 layers of dividing plate 51 of heavy metal adsorption device cylinder, fills ion-exchange fibre 52 between dividing plate 51.Described ion-exchange fibre is selected containing sulfonate functional groups or carboxylic functional groups, and fibrous matrix uses polypropylene fibre or polyacrylonitrile fibre, and irradiated grafting or chemical graft are made.
Processing procedure is to be collected in special chemical nickle-plating wastewater collecting pit 1 by the chemical nickle-plating wastewater that factory floor produces, reaction tank 2 is entered by gravity flow, regulation pH to about 3, add oxidant hydrogen peroxide, its mix homogeneously is made by mechanical agitation, after oxidation reaction 3 hours, by elevator pump 3, chemical nickle-plating wastewater is pumped into more medium filter 4, filter the impurity in described chemical nickle-plating wastewater；Going deimpurity chemical nickle-plating wastewater to be passed through heavy metal adsorption device 5 by described, the chemical nickle-plating wastewater described in adsorption treatment, in water outlet after treatment, the concentration of nickel is less than 0.1mg/L, reaches discharge standard and directly discharges.After ion-exchange fibre absorption is saturated, regenerating with regenerative agent, obtain the nickel concentrated solution of high concentration, described regenerative agent is hydrochloric acid or sodium chloride.
The principle that the nickel of described chemical nickle-plating wastewater processes is: first to containing Ni2+, sodium hypophosphite, sodium phosphite, carboxylate, sodium sulfide or ammonium sulfide chemical nickle-plating wastewater in add appropriate oxidant (hydrogen peroxide), the hypophosphorous acid root in chemical nickel waste water and chemical plating by-product orthophosphite are oxidized to phosphate radical；Then through heavy metal adsorption device, the chemical nickle-plating wastewater after oxidation reaction being swapped absorption, in the waste water after process, the concentration of emission of nickel is at below 0.1mg/L.
Nickel retracting device, including nickeliferous concentrated solution collecting tank, stillpot, filter press and high-temperature hydrogen reduction stove.Removal process is that the nickel concentrated solution of high concentration is collected in concentrated solution collecting tank；Then the nickel concentrated solution in nickeliferous for described collecting tank concentrated solution collecting tank is pumped in stillpot by elevator pump；Add in stillpot into oxalic acid solution, make it react the nickeliferous precipitation of formation by mechanical agitation；Pump into filter press by pneumatic diaphragm pump again and carry out filter pressing.Nickeliferous precipitation after described filter pressing is put in high temperature reduction furnace, under the conditions of 300 DEG C～500 DEG C, carries out decomposition reaction, obtains highly purified nikel powder.The detailed construction explanation of nickel retracting device refer to the utility model patent description of Publication No. CN204325033U that the present inventor proposes.
In sum, the processing means of a kind of chemical nickle-plating wastewater that this utility model provides, it is possible to the nickel stably reaching standard in chemical nickle-plating wastewater is processed and recycling.Thus decrease the loss of metallic nickel well, reduce the processing cost of Treating Electroplate Wastewater Containing Nickel, while being effectively reduced environmental pollution, improve economic benefit, there is good promotion prospect.
Claims (3)
1. a chemical nickle-plating wastewater processing means, is characterized in that chemical nickle-plating wastewater collecting pit (1), reaction tank (2), elevator pump (3), more medium filter (4), heavy metal adsorption device (5), discharge relaying pond (6) and nickel recovery system (7) that described processing means includes being sequentially connected with.
2. according to the chemical nickle-plating wastewater processing means described in claim 1, it is characterized in that described more medium filter (4) comprises sandfiltration pot, bag filter, wherein set the bag type filtering net of different pore size in sandfiltration pot inside the filling quartz sand of different-grain diameter, bag filter, liquid is by after more medium filter, and impurity is trapped within filter.
3. according to the chemical nickle-plating wastewater processing means described in claim 1, it is characterized in that described heavy metal adsorption device (5) uses multiple structure, including heavy metal adsorption device cylinder (50), heavy metal adsorption device cylinder (50) point three layers, centre separates with dividing plate (51), filling ion-exchange fibre (52)；Described ion-exchange fibre (52) is selected containing sulfonate functional groups or carboxylic functional groups, and fibrous matrix uses polypropylene fibre or polyacrylonitrile fibre, and irradiated grafting or chemical graft are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192992.7U CN205420000U (en) | 2016-03-14 | 2016-03-14 | Chemical nickel plating effluent treatment plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192992.7U CN205420000U (en) | 2016-03-14 | 2016-03-14 | Chemical nickel plating effluent treatment plant |
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| CN205420000U true CN205420000U (en) | 2016-08-03 |
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| CN201620192992.7U Active CN205420000U (en) | 2016-03-14 | 2016-03-14 | Chemical nickel plating effluent treatment plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113603283A (en) * | 2021-08-16 | 2021-11-05 | 温州科锐环境资源利用有限公司 | Nickel-containing wastewater resource utilization process |
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2016
- 2016-03-14 CN CN201620192992.7U patent/CN205420000U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113603283A (en) * | 2021-08-16 | 2021-11-05 | 温州科锐环境资源利用有限公司 | Nickel-containing wastewater resource utilization process |
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