CAJ | 학술논문

MTO工艺产生的超高浓度有机废水，COD高达十万mg/L。传统方法大多是将有机物氧化成CO2和H2O，造成能源的浪费。本文先通过精馏的方法分离出低沸点且易溶于水的醇和酮等有机物，轻组分回收率达90%；然后对静置后的釜残液过滤，去除浮油，进一步降低COD；再在常温下利用活性炭对滤液进行吸附。结果表明，当馏出液质量分数达到4.2%时，浓缩水的COD值降低97%；当质量空速在4h-1时，浓缩水变得清澈透明，COD值降低至643mg/L，可以排放至生化池进一步处理。
MTO공예산생적초고농도유궤폐수，COD고체십만mg/L。전통방법대다시장유궤물양화성CO2화H2O，조성능원적낭비。본문선통과정류적방법분리출저비점차역용우수적순화동등유궤물，경조분회수솔체90%；연후대정치후적부잔액과려，거제부유，진일보강저COD；재재상온하이용활성탄대려액진행흡부。결과표명，당류출액질량분수체도4.2%시，농축수적COD치강저97%；당질량공속재4h-1시，농축수변득청철투명，COD치강저지643mg/L，가이배방지생화지진일보처리。
The COD of ultra-high concentrated organic wastewater from MTO process can reach 100000mg/L. In the most traditional treatment process of wastewater, the organics are oxidized into CO2 and H2O,unable to be used, resulting in a waste of resources. In this article, separating the low boiling point and water-soluble components alcohols and ketones in ultra-high concentrated organic wastewater by distillation, the recovery of the organics reaches 91%.After standing for 24h, there are slick floats. The COD value of wastewater will be further reduced after filtration. Finally, purify and absorb the residual organics in water through activated carbon at room temperature. When the distillate amounts to 4.2%, the COD value of concentrated water decreases by 97%. When the WHSV is 4h-1, the concentrated water becomes clear and transparent and COD value drops to 643mg/L and could be discharged in to biological pool for further treatment.