Treatment of wastewater containing high concentration of copper and arsenic by sulphur dioxide reduction-diffusion dialysis
Zhong Sheng-kui · Journal of Central South University(Science and Technology) · 2009
Sulphur dioxide reduction combined diffusion dialysis experiment was used for separation of copper and arsenic in wastewater containing high concentration of copper and arsenic. The effects of the flow of sulphur dioxide,reaction time,reaction temperature and stirring speed and the diffusion dialysis process of the influent acidity,water flow rate and material flow rate on the ratio of separation of arsenic and copper were studied. The results show that under the conditions of the flow of sulphur dioxide of 3 kg/h,reaction time of 1 h,at room temperature,stirring speed of 800 r/min,and the inlet water acidity of 5 g/L,water flow rate of 400 mL/h,material flow rate of 400 mL/h,the effect of separation is the best. The ratio of copper reaches 94.71% and arsenic 95.63%.