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 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.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1995年第1期19-22,共4页
Environmental Science
基金
国家自然科学基金
