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About electroplating wastewater treatment equipment introduction
About electroplating wastewater treatment equipment introduction
Electroplating industry is an important processing industry, is today one of China's three major polluting industries , the production process of large quantities of nickel , chromium and other heavy metal wastewater serious pollution to the environment .
Along with the implementation of sustainability of macroeconomic policies , as well as sustained economic growth , the scarcity of water led to rising water prices , plating equipment required to seek a line with national environmental policy requirements of the new technology, new technology to achieve electroplating wastewater recycling.
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 .
The traditional electroplating wastewater treatment methods: chemical, ion exchange, electrolysis method. But the traditional approach to electroplating wastewater the following problems: high cost, waste of resources and environmental pollution.
Electroplating production process as well as the high water emissions of heavy metals pollution of the water environment , which greatly restricted the electroplating industry 's sustainable development. The traditional high cost of electroplating wastewater treatment process , heavy metals discharged into water bodies without recycling it , easy to biological hazard. The membrane separation technology for water and heavy metal for recycling , through membrane separation technology processing wastewater, heavy metals can achieve "zero emissions" or "micro- discharge" , so that production costs are significantly reduced.
The use of membrane separation technology to recover heavy metals from electroplating wastewater and water , to reduce or eliminate its environmental pollution , to achieve cleaner production plating on higher value-added gold, silver , nickel, copper and other electroplating wastewater by membrane separation technology can achieve closed loop, and produce good economic results. For integrated electroplating wastewater , through simple physical chemical treatment , the use of membrane separation technology can reuse most of the water , the recovery rate of up to 60% to 75 %, and reduce the total effluent emissions reductions of pollutants discharged into water bodies .
Electroplating wastewater treatment using membrane , heavy metals and water savings , saving raw materials , reduce production costs , while reducing the emission of pollutants into the environment , reducing the burden on the environment , improve the environment , is a kind of clean production technology helps electroplating industry to achieve sustainable development goals.
Electroplating wastewater nature: electroplating industrial wastewater main sources of heavy metal pollutants electroplating rinse water , degreasing plating wastewater , inverted cylinder and solutions. Electroplating wastewater pollution concentrations generally 500-2000 mg per liter COD , BOD concentration of 100-400 milligrams per liter , the water is acidic. Electroplating wastewater treatment process : other process sludge pump selection to be based on the specific circumstances of each project decisions. Electroplating rinse water recycling equipment can be installed online , recyclable heavy metals and cleaning water , electroplating production line to achieve zero discharge of wastewater .