The effects of evaporation crystalliza-tion,recrystallization and activated carbon on the properties of high salt organic wastewater were inves-tigated.The results showed that with the increase of total organic carbon(TOC)mass concentration in raw water,the TOC content in crystalline salt from raw water and the TOC mass concentration in mother liquor increased,and the whiteness of crystalline salt from raw water decreased.With the increase of TOC content in crystalline salt from raw water,TOC con-tent in recrystallized salt increased at an accelerated rate,while TOC concentration in mother liquor ac-celerated at first and then slowed down.The fitting calculation showed that when the TOC content of raw water crystalline salt was controlled below 5.338 mg/g,the TOC content of product salt could be no higher than 1 mg/g through one evaporation crystallization.Compared with no activated carbon,the whiteness of recrystallized salt with activated carbon increased from 58.1％-60.6％to 82.7％-83.8％.
关键词
高盐有机废水/蒸发/结晶/结晶盐/母液/总有机碳/白度/活性炭
Key words
high salt organic wastewater/evapo-ration/crystallization/crystalline salt/mother liquor/total organic carbon/whiteness/activated carbon
维普
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