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PROCESS FOR TREATING REFRACTORY WASTEWATER USING ZERO-VALENT IRON TREATMENT AND BIODEGRADATION
PROCESS FOR TREATING REFRACTORY WASTEWATER USING ZERO-VALENT IRON TREATMENT AND BIODEGRADATION
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机译：零价铁处理与生物降解处理难处理废水的方法
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摘要
A method for treating indegradable wastewater by a zero-valent iron process and a biological process is provided to purify even wastewater containing recalcitrant contaminants by combining a physicochemical wastewater treatment process with a biological wastewater treatment process. In a wastewater treatment process for changing toxic compounds in wastewater into non-toxic compounds, a method for treating refractory wastewater by a zero-valent iron process(1) and a biological process comprises: a pretreatment process of pretreating wastewater by containing zero-valent iron as an active component in wastewater; a biological oxidation process(2) for secondly degrading the pretreated wastewater; and a solid-liquid separation process(3) of separating solid and liquid from wastewater by settling the degraded wastewater. The pretreatment process is performed by adding any one or more of sand, gravel and pyrite to wastewater according to characteristics of a removal target and wastewater. The biological oxidation process is selected from activated sludge, trickling filter, rotating biological contactor, other aerobic biological treatment, or anaerobic biological treatment processes.
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