芬顿氧化－混凝沉淀工艺处理难降解有机化工废水的试验研究

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中图分类号：X703 文献标识码：A 文章编号：1008-9500（2026）02-0015-05

DOI： 10.3969/j.issn.1008-9500.2026.02.004

Experimental Study on the Treatment of Recalcitrant Organic Chemical Wastewater by Fenton Oxidation - Coagulation and Sedimentation Process

SONG Zhongzhong （Gansu Membrane Science and Technology Research Institute Co.，Ltd.，Lanzhou73oo30，China）

Abstract：The experiment used Fentonoxidation-coagulationand sedimentation processto treat recalcitrantorganic chemicalwastewater，byexaminingthechanges inChemical OxygenDemand（COD），theoptimaloperatingconditions for the process were determined.The experimental results showed that when the pH value was 3，the amount of H2O2 solution added was5mL，the amount of FeSO4 addedwas 4.0g ，the reaction time was 3h ，and the amount of Polyacrylamide （PAM） solution added was2 mL，the COD removal rate could reach 66.67% .After Fenton oxidation-coagulation and sedimentation treatment，theratioof Biochemical Oxygen Demandafter5days （BOD）toCODin the wastewater was0.46， andthe biodegradabilityof the wastewater wassignificantlyimproved.Afteron-siteengineeringdebuggingandoperation， the COD removal rate remained stable at 61.78%～69.74% ，and the removal effect was good.

Keywords：Fenton oxidation; coagulationand sedimentation; chemical wastewater

过氧化物引发剂废水成分极为复杂，废水中主要污染物为硫酸钠、过氧化氢、二苯酚、叔丁醇、丙酮、四甲基四氢呋喃、硫酸钠、 α- 甲基苯乙烯、苯酚和甲醇等。（剩余5776字）