目前对微生物产生ECP的机制和生物絮凝过程研究不是十分清楚,针对提高分泌ECP能力的研究还处于试验探索阶段,这一方面研究还有待于进一步加强。
4 结语
活性污泥法处理重金属废水具有成本低,环境友好等优点,是一种较有发展前途的方法。但活性污泥法尚有许多的不足之处,如利用沉淀机制处理重金属废水,则剩余活性污泥需要进行再处理回收其中的金属成分。当前活性污泥法大多还处在实验室和中试阶段,进行了大规模工业应用的研究成果还很少,若想在此领域有所突破,还必须加强在生物强化技术等方面的研究,同时提高工业过程和设备自动化水平。
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