【摘要】 采用混凝-超滤组合工艺处理含油废水。试验结果表明,原水经混凝预处理后生成微絮体,改善了分离性能,对膜污染起了重要的缓解作用,可延长反冲洗周期,使其保持较高的稳定通量,长时间运行。运行过程中膜通量下降幅度较小(仅为33%);随着超滤时间的延长,COD和油的去除率较高,均可保持在90%～95%的较高水平。更多还原

【Abstract】 Oily wastewater was treated by coagulation-ultrafiltration(UF) combined process.It was shown that,through coagulation pretreatment,the feed water turned into micro floc water to improve the separation performance and play an important lessening action in membrane pollution.The combined process can lengthen the back-washing period to make the system operating at higher membrane flux for a long term;the lowering range of membrane flux was smaller in the course of operation(only 33%);as UF operation lapsed,the COD and oil removal rates kept at higher level of 90%～95%.更多还原