甲醇制烯烃(MTO)含油废水处理及回用

甲醇制烯烃(MTO)含油废水处理及回用书甲醇制烯烃(MTO)含油废水处理及回用李玉林，杜善明，吴国祥，肖杰，刘义，贺飞，朱德汉(神华新疆化工有限公司，新疆乌鲁木齐831404)摘要:新疆某煤制烯烃项目采用预处理+生物处理+深度处理组合工艺处理含油废水，其中预处理采用平流隔油、涡凹(CAF)气浮、溶气(DAF)气浮，生物处理采用A/O工艺，深度处理采用曝气生物滤池(BAF)。运行结果表明，该组合工艺运行稳定可靠，对油类及悬浮物去除率＞99%，对COD和NH3－N的去除率＞95%，处理后的水可回用于冲刷地面、洗车、绿化、景观，同时浮油回收利用，可供同类废水处理工程参考。关键词:含油废水;平流隔油池;气浮;曝气生物滤池中图分类号:TU993文献标识码:C文章编号:1000－4602(2018)18－0086－05TreatmentandＲeuseofMethanoltoOlefin(MTO)WastewaterLIYu-lin，DUShan-ming，WUGuo-xiang，XIAOJie，LIUYi，HEFei，ZHUDe-han(ShenhuaXinjiangChemicalCo．Ltd．，Urumqi831404，China)Abstract:AMTOprojectinXinjiangadoptsthecombinedprocessofhorizontalflowoilsepara-tion，cavitationairflotation(CAF)anddissolvedairflotation(DAF)forpretreatment，A/Oforbiologi-caltreatmentandbiologicalaerationfilter(BAF)foradvancedtreatmenttotreatoilywastewater．Theop-erationresultsshowedthatthecombinedprocesswasstableandreliable，theremovalratesofoilandsus-pendedsolidsweremorethan99%，andtheremovalratesofCODandNH3-Nweremorethan95%．Thetreatedwatercanbeusedforgroundwashing，carwashing