Experimental study on concentration and reduction of desulfurization wastewater by pervaporation
The feasibility and process advantages of pervaporation process for the concentration and reduc-tion of desulfurization wastewater were discussed.The results showed that the membrane permeation flux can reach 13.8 L/(m2·h),and the membrane permeation flux reaches 7.4 L/(m2·h)when the water recovery rate exceeds 70%.The water quality of pervaporation effluent is stable,and the effluent conduc-tivity is<50 μS/cm,COD<20 mg/L.At the same time,the inhibition effect of scale inhibitors on mem-brane fouling was investigated.The use of scale inhibitors before 50%water recovery increased the aver-age membrane permeation flux by 22.5%.
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