Electroplating wastewater recycling method and equipment

2015 
The invention provides an electroplating wastewater recycling method and equipment. The method comprises the following steps that electroplating wastewater is divided into copper containing wastewater, chromium containing wastewater, cyanogens containing wastewater, nickel containing wastewater and pretreatment wastewater; precipitating agents are added into respective pH regulating pools of the copper containing wastewater, the chromium containing wastewater and the cyanogens containing wastewater for regulating the pH value, and then the wastewater is treated respectively through an inclined pipe sedimentation pool, an ion exchange column, a chamber type filter press, a reverse osmosis machine and an evaporator; the pretreatment wastewater is subjected to filtering treatment by a filter and is then treated through the reverse osmosis machine; precipitating agents are added into a pH regulating pool of the nickel containing wastewater for regulating the pH value, and the wastewater is subjected to filtering treatment and is then subjected to ion exchange treatment; regenerated liquid generated in the treatment process returns to the pH regulating pool for cyclic treatment, and meanwhile, RO clean water and solid phase metal are recovered. The electroplating wastewater recycling method is used for electroplating wastewater treatment; the process is stable; the operation is simple and convenient; the control is easy; safety and reliability are realized; the treatment cost is lower.
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