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电镀含镍废水低温蒸发处理​

Customer background: The customer is Guangdong Jieyang Electroplating Industrial Park - Sino-German Metal Ecological Process Surface Treatment Ecological Industrial Park, which reduces the discharge of electroplating wastewater by 1.8 million tons in Jieyang City every year, and has made important contributions to the environmental protection of Jieyang City and eastern Guangdong.


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Customer pain points: The park collects various high-concentration wastewater in the production process of enterprises, and some high-concentration and high-salt wastewater is difficult to treat. The disposal of these wastewater through the existing processes in the park will overwhelm the existing sewage treatment system, so it is necessary to introduce new technologiesLow temperature evaporation treatment of electroplating nickel-containing wastewater


Wastewater Production Process & Components:

1. Name: electroplating high concentration waste liquid

2. Process: electroplating

3. Ingredients: Contains sodium chloride, iron salt, zinc salt and a small amount of chromium salt nickel nitrate, and some copper salt, chromium salt, phosphate.


Customer's original processing method & cost
1. Outsourced disposal to hazardous waste disposal center
2. The daily waste liquid production is 100 tons, and the cost is 1,000 yuan/T

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Electroplating nickel-containing wastewater low-temperature evaporation placereason


















serial number
Test water sample namePHConductivityCODFe3+Ni2+Cr3+volume
1
Undiluted solution
5.465070077941401.931510.2125.232000L
2


distilled water

6.47673740.170.140.11


1924L

3
6.2437.12750.10.170.12
4
5.135.8   1570.110.110.09
5
Concentrate5.34>200,000721911391914980250476L


Conclusion: The COD of distilled water is between 50 and 400, the heavy metal removal rate is above 99%; the concentration ratio is 96.2%; the heavy metal content in the concentrated solution increases significantly, so the electroplating nickel-containing wastewater is suitable for low-temperature evaporation treatment.



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