丙烯腈废水处理技术研究

丙烯腈废水含有大量的低聚物、未聚合的单体以及氰根等有害物质,目前采用物理方法处理,运行成本十分昂贵,严重挫伤了企业治污的积极性,急需找到一种物美价廉的工艺方案解决此问题。本研究提出采用混凝沉淀-铁炭微电解的预处理工艺并结合膜分离技术对丙烯腈废水进行处理研究。研究了铁炭微电解反应及混凝沉淀的最佳条件。确定了铁炭微电解中停留时间,pH值,铁炭的投放比例以及混凝剂的种类,投加量,pH值等因素对处理效果的影响,并分析了诸多因素中影响最大的因素,确定了最佳反应方案,丙烯腈废水治理提供了一条新的途径。

Research on Acrylonitrile Wastewater Treatment Technology

Acrylonitrile wastewater contains large amounts of oligomers,unpolymerized monomers,cyanide and other harmful substances.The physical treatment methods currently adopted is very expensive in operation cost,hurting the enthusiasm of enterprises to treat the pollution badly.It is necessary to find an efficient and inexpensive process scheme to solve this problem.This study proposed to combine coagulation sedimentation-iron carbon micro electrolysis pretreatment process and membrane separation technology to treat acrylonitrile wastewater.The optimal conditions of iron carbon micro electrolysis reaction and coagulation sedimentation are studied to determine the influence of iron carbon micro electrolysis residence time,pH value,iron/carbon ratio,coagulant species,dosage,pH value and other factors on the treatment effect.The major factors are studied to determine the best reaction plan in a bid to provide a new method for acrylonitrile wastewater treatment.