柠檬酸盐强化UV/Fenton-生物法处理乳化油废水  

Emulsion wastewater treatment by citrate enhanced UV/Fenton and combined with biological treatment.

作　　者：李继[1] 吕小梅[1] 张萍[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院环境科学与工程研究中心,广东深圳518055

出　　处：《中国环境科学》2011年第3期367-370,共4页China Environmental Science

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07211-004);深圳市科技计划项目(SY200806260019A)

摘　　要：以乳化油配水为对象,研究了柠檬酸盐扩大UV/Fenton工艺的适用pH值范围与强化出水可生化性及与活性污泥法联用的效果.结果表明,柠檬酸盐可将UV/Fenton法的适用pH值范围扩大至4～8,且能提高UV/Fenton处理出水的可生化性.UV/Fenton处理后,原水BOD5/COD由0.02提高到0.32,投加1.0mmol/L柠檬酸钠后提高至0.53.UV/Fenton处理与经1.0mmol/L柠檬酸钠强化UV/Fenton处理出水经8h生物处理,COD去除率分别为78.7%,96.0%.柠檬酸钠浓度从0增加至1.0mmol/L时,经UV/Fenton处理过的出水再经生物处理出水的COD由293mg/L降低至48mg/L;继续增大时,COD基本保持不变.柠檬酸钠强化UV/Fenton处理可扩大pH值范围,改善废水的可生化性.In the UV/Fenton process（UFP） treating artificial emulsion wastewater,the effects of citrate addition on the applicable pH range and effluent biodegradability were systematically investigated.In the citrate enhanced UV/Fenton process（CE-UFP）,the applicable pH range was broadened to 4～8.When CE-UFP was carried out under 1.0 mM initial citrate concentration,the effluent BOD/COD ratio increased to 0.53,which is much higher than that of 0.32 with no citrate addition.When the effluent of CE-UFP and UFP were further separately treated with 8-hour biological treatment,the respective COD removal efficiencies were 78.7.0% and 96.0%.When 0～1.0 mM citrate was dosed at CE-UFP stage,the effluent COD after subsequent biological treatment may decrease from 293mg/L to 48mg/L,while no further decrease was observed with higher citrate dosage.All these results clearly indicate citrate can broaden the applicable pH range of UFP and enhance the biodegradability.

关 键 词：乳化油废水 UV/FENTON 柠檬酸盐 可生化性 生物处理 

分 类 号：X703.1[环境科学与工程—环境工程]