handle Electroplating wastewater As an important environmental protection issue, a series of process measures are usually required to purify electroplating wastewater to meet discharge standards or achieve recycling. The following are Treatment of electroplating wastewater General steps and methods of
1. Pretreatment: First, the wastewater is preliminarily treated, including removing impurities such as sediment, suspended solids and foam. Physical methods such as filtration and sedimentation can be used.
2. Chemical neutralization: The wastewater may contain acidic or alkaline substances, so neutralization treatment is required to make the pH value of the wastewater reach the neutral range. Generally, alkaline or acidic substances are added.
3. Metal ion removal: electroplating wastewater usually contains metal ions, which can be removed by ion exchange resin adsorption, chemical precipitation and other methods.
4. Organic matter treatment: The wastewater may contain organic matter, which can be removed by biological treatment, chemical oxidation, activated carbon adsorption and other methods.
5. Membrane separation: membrane technologies such as reverse osmosis and ultrafiltration can be used to separate soluble substances and microorganisms from wastewater to achieve wastewater purification.
6. Disinfection treatment: Disinfect the treated wastewater to ensure that the discharged wastewater meets the sanitary standards. UV irradiation, chlorine disinfection and other methods can be used.
7. Recycling: the treated wastewater shall be treated again to meet the reusable water quality standard, which is commonly used for production of circulating cooling water or other process water.
By comprehensively using the above treatment methods and combining the actual situation and wastewater characteristics, an efficient and economical Electroplating wastewater treatment Systematically, effectively reduce environmental pollution, save water resources, and achieve sustainable development. Appropriate treatment methods and equipment shall be selected according to local laws, regulations and standards to ensure waste water treatment Discharge up to standard.
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