Plastic electroplating wastewater treatment technology
リリース日：2013-07-29 00:00 ソース：http://www.patchina.com.cn クリック：
Plastic plating is the use of chemical and electrochemical methods in the plastic surface coated metal. Plastic products are widely used in electroplating machinery manufacturing, light industry, electronics and other industries. Electroplating wastewater composition is very complex, in addition to containing cyanide (CN-) and acid-base wastewater effluent, the heavy metal wastewater is potentially extremely harmful electroplating wastewater category. If left untreated, causing serious environmental pollution.
Electroplating wastewater treatment widespread attention at home and abroad, developed a variety of treatment techniques, treatment is non-toxic by toxic and harmful into harmless, recycling precious metals, water recycling and other measures to eliminate and reduce emissions of heavy metals. With the rapid development of electroplating industry and the increasing environmental requirements, at present, electroplating wastewater treatment has begun to enter the clean production technology, total control and the integration phase of circular economy, resource recycling and closed loop is the development direction of the mainstream.
Electroplating wastewater complex composition, contaminants can be divided into inorganic and organic pollutants into two categories, large amplitude changes in water quality, and the electroplating wastewater toxic, contains a lot of heavy metal ions, if not direct discharge of treated water will cause great surrounding contamination.
For my country's current situation electroplating wastewater treatment industry statistics and surveys, widely used in electroplating wastewater treatment methods include the following categories:
(1) chemical precipitation, is divided into middle and Shendian law and sulfide precipitation.
(2) redox process is divided into chemical reduction, ferrite law and electrolysis.
(3) membrane separation technology.
(4) adsorption.
(5) ion exchange method.
Electroplating wastewater treatment widespread attention at home and abroad, developed a variety of treatment techniques, treatment is non-toxic by toxic and harmful into harmless, recycling precious metals, water recycling and other measures to eliminate and reduce emissions of heavy metals. With the rapid development of electroplating industry and the increasing environmental requirements, at present, electroplating wastewater treatment has begun to enter the clean production technology, total control and the integration phase of circular economy, resource recycling and closed loop is the development direction of the mainstream.
Electroplating wastewater complex composition, contaminants can be divided into inorganic and organic pollutants into two categories, large amplitude changes in water quality, and the electroplating wastewater toxic, contains a lot of heavy metal ions, if not direct discharge of treated water will cause great surrounding contamination.
For my country's current situation electroplating wastewater treatment industry statistics and surveys, widely used in electroplating wastewater treatment methods include the following categories:
(1) chemical precipitation, is divided into middle and Shendian law and sulfide precipitation.
(2) redox process is divided into chemical reduction, ferrite law and electrolysis.
(3) membrane separation technology.
(4) adsorption.
(5) ion exchange method.
関連するタグ：EDelectrophoreticcoatingequipment,PlasticPlating
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