Treatment Method of Thallium-containing Wastewater
China is rich in mineral resources,and all nonferrous metals contain thallium metal in non-ferrous mines.In recent years,thallium poisoning was frequent and water pollution was serious,which seriously affected people's production and life.In order to protect the ecological environment,the state and local governments have formulated more stringent control standards.Higher requirements were put forward for the treatment of wastewater containing thallium.According to the present situation and research progress of thallium treatment technology at home and abroad,the characteristics of thallium treatment methods and processes commonly used at home and abroad in recent years were summarized,and the advantages and disadvantages of sulfide precipitation,adsorption,ion exchange,biological preparation and electrochemical methods were analyzed.When treating thallium-containing industrial wastewater,we should not only carry out a single process operation,but also integrate the advantages of various processes,and the combined process will be the focus of future development.
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