Treatment of waste gas from electronic dismantling workshop

Abstract

At present, due to China’s electronic waste treatment technology is not mature enough. In the market, a large number of electronic wastes into the household dismantling workshop and through simple, inefficient, extensive way to recycle. After the extraction of valuable resources, the remaining toxic and harmful substances are discharged at will, resulting in a high level of toxic and harmful pollutants in the air of the region. The deposition of harmful and harmful pollutants in the air also further leads to the deterioration of the local soil, water and other ecological environment, threatening the health and survival of local residents. The paper takes the exhaust gas from electronic waste dismantling process based on family workshop of Guiyu town as the experimental object. Water absorption and activated carbon adsorption were applied to treat exhaust gas. And the ferreite precipitation was used to treat the recirculated wastewater after spray system. The experiment results indicate that the lead cadmium, tin and its compounds and benzene series could be removed above 95% after water absorption and active carbon adsorption. The lead, cadmium and copper in recirculated wastewater respectively could be removed 96.69%, 79.76% and 90.82% after ferrite precipitation process.