“强化混凝-SBR-微絮凝气浮”处理麦草制浆中段废水

Treatment of the Effluent from Washing/Screening/Bleaching of Straw Pulp by "Enhanced Coagulation-SBR Process-Micro-flocculation Flotation" Process

介绍了"强化混凝-SBR-微絮凝气浮"处理麦草制浆中段废水工艺的流程和主要技术参数。结果表明,该工艺能有效去除麦草制浆中段废水中的CODCr和色度,当进水CODCr为1600～2300mg/L,色度为500～600倍,最终出水CODCr为125～150mg/L,色度为50倍以下,可达到GB3544—2008《制浆造纸工业水污染物排放标准》的要求。

Using an ＂enhanced coagulation- SBR process - Micro-flocculation flotation＂ process to treat the effluent from washing/screening/ bleaching of straw pulp was studied. The process and key technical parameters were presented. The result showed that the process can effectively remove CODcr and color in the effluent from washing/screening/bleaching of straw pulp. When the CODcr and color of inlet waste water are 1600 - 2300 mg/L and 500 - 600 times respectively, the CODcr and color will reduce 125 - 150 mg/L, and lower than 50 times respectively after treatment, which satisfies the requirements of the GB3544--2008 ＂Discharge standards of water pollutant for pulp and paper industry＂.