Abstract:

In order to respond positively to the country’s“development and promotion of industrial water reuse technologies” spirit and the call of“energy-saving emission reduction, environmental protection”,one gold mine for gold in the production process has a wastewater characteristics，determine the sodium pyrosulfite decomposition of cyanide-gold production wastewater treatment by electrocoagulation process，and through the trial and test,determine when the decomposition of cyanide process for pH control in 8.5,sodium metabisulfite is 10 kg/t,decomposition of cyanide response time of 6 hours.When the [Cu2+] at 10~30 mg/L,optimum conditions for flocculation process flow 130~150 m3/h,current 6 500 A,voltage 24~25 V,after this process the water can be reused by the enterprise.As further deep oxidation which can meet The Standard for Integrated River Basin Water Pollution Discharge on the Peninsula of Shandong Province（DB37/676-2007） emission level standards.The gold mine using sodium pyrosulfite decomposition of cyanide-new technology for production of electro-flocculation treatment of wastewater treatment and reuse, implementation of wastewater reuse.

Key words: Energy saving and emission reduction, Environment protection, Broken cyanogen electro-flocculation, New technologies