摘要：

采用一种新工艺，以微生物为催化剂，常温常压下用空气氧化制备生物聚合硫酸铁（BPFS），结合Fenton试剂对喷漆废水进行混凝—氧化试验。BPFS与PAM联用，混凝去除喷漆废水中悬浮状有机物，混凝出水再经Fen-ton试剂氧化处理，进一步深度氧化去除溶解态有机物，实验确定了最佳处理条件。结果表明：研制的聚合铁性能优良，凝聚作用显著，经混凝—氧化处理后废水的COD_Cr从880mg/L降至25mg/L（去除率达97%），色度为0，悬浮物<50mg/L，完全可以达标排放。

关键词: 喷漆废水, 混凝, 氧化, 生物聚合硫酸铁

Abstract:

By using a new technological process, on the basis of microorganism as a catalyst, ferrous sulfate is oxidized by the air at normal temperature and pressure, and the polyferric sulfate is made. The product is named biological polyferric sulfate, and its abbreviation is BPFS. Combined with Fenton agent, it is used for treating painting wastewater in coagulation-oxidation experiment. BPFS combined with coagulant aid PAM for coagulation is used to treat the suspended organics, and Fenton agent for further treatment to oxidize the dissolved organics. The suitable condition is selected. Experiments indicate that, after coagulation and oxidation, the COD_Cr of painting wastewater has been decreased from 880mg/L to 25mg/L, the removal ratio up to 97%. The chroma reaches 0 and suspended matter is less than 50mg/L. The treated wastewater can be discharged away directly.

Key words: painting wastewater, coagulation oxidation, biological polyferric sulfate

中图分类号: 

• X703.1