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电化学氧化法深度处理垃圾焚烧发电厂沥滤液生化出水

Keywords: 垃圾沥滤液,电化学氧化,COD,色度

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Abstract:

垃圾焚烧发电厂的沥滤液经生化处理后,COD和色度等仍然较高,达不到排放标准,必须进一步进行深度处理。采用自制的箱式四通道电化学反应器对垃圾焚烧发电厂沥滤液生化出水进行深度处理,研究了主要工艺参数——电流密度、表观流速、初始Cl-浓度、比电极面积等因素对COD和色度去除效果的影响。适宜处理条件为:电流密度20mA/cm2,反应器内表观流速2.92cm/s,初始Cl-浓度4732mg/L、比电极面积43.4m2/m3。在此条件下处理废水10min,色度就能达到排放要求,处理2h,COD也能达到排放要求。考察反应器的能耗发现,电化学处理的能耗随电化学处理时间的延长呈不断增大的趋势。

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