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Fe2+-H2O2法处理DSD酸生产氧化母液的研究
Application of Ferrous-Hydrogen Peroxide Process for the Treatment of Wastewater from Dye Intermediate DSD Acid Manufacturing Processes.
【摘要】 为改善DSD酸氧化母液的可生化降解性,将废液先用有机絮凝剂TS-1(一种季胺盐)处理,TS-1的投加量为3g/L,其后用Fe2+-H2O2法氧化,Fe2+和H2O2的量分别为150mg/L,7g/L,废液COD和色度的去除率分别可达64%和62%。经处理后的废水,其BOD5/COD≈0.3,可以认为已达到生化处理的要求。当H2O2的投量为2g/L,经Fe2+-H2O氧化处理后的废液,再用FeCl3进行两级混凝处理(FeCl3的投加量分别为sg/L和2g/L),则COD和色度的去除率可达90%和95%。
【Abstract】 Abstract A pretreatment method for the biological treatment of wastewater from DSD acid manufacturing processes,a refractory dye intermediate wastewater,based on combined Fe2+-H2O2 oxidation and coagulation-flocculation, has been developed. When the wastewater was treated with Fe2+-H2O2 oxidation([Fe2+ ] = 150mg/ L, [H2O2 ]= 7g/ L)after a flocculation using an organic flocculant TS--l at a dosage of 3g/ L, the overall COD and colour removals were 64 % and 62 %,respectively. BOD5/COD value of the tracted wastewater was 0.3.Fe2+--H2O2 oxidation treatment can reduce the solubility of organic molecules with sulfonic group and increace the efficiency of coagulation treatment.The COD and colour removals were both more than 90% when FeCL3 was used as a coagulant which dosages of two stages coagulation were 5g/L and 2g/L after a Fe2+-H2O2 oxidation pretreatment at a H2O2 dosage of 2g/L.Keywoads: ferrous-hydrogen peroxide;DSD acid;dye intermediate;wastewater treatment.
- 【文献出处】 环境科学 ,CHINESE JOURNAL OF ENVIROMENTAL SCIENCE , 编辑部邮箱 ,1995年01期
- 【分类号】X781
- 【被引频次】86
- 【下载频次】152