耐盐菌与臭氧催化氧化组合处理长链二元酸工艺废水的研究  

Treatment of long-chain dibasic acids process wastewater by combination of salt-tolerant bacteria and ozone catalytic oxidation

作　　者：马和旭 程梦婷 王鹏翔 赵越 王鹏 MA He-xu;CHENG Meng-ting;WANG Peng-xiang;ZHAO Yue;WANG Peng(Sinopec Dalian Research Institute of Petroleum and Petrochemicals,Dalian 116045,China)

机构地区：[1]中国石油化工股份有限公司大连石油化工研究院,辽宁大连116045

出　　处：《现代化工》2021年第6期186-191,共6页Modern Chemical Industry

基　　金：中国石化集团公司资助项目(419028)。

摘　　要：为处理长链二元酸生物发酵工艺产生的高硫酸盐有机废水,筛选分离出一株具有优异耐盐性能的菌株GXNYJ-12,其可有效处理COD质量浓度为6512 mg/L、硫酸盐质量浓度为20200 mg/L、全盐量质量浓度为31100 mg/L的长链二元酸工艺废水,经120 h好氧生化,COD去除率高达95%。其生化出水经臭氧催化氧化进一步处理,在采用自研活性炭复合材料负载催化剂(Fe2O_(3)/ACNT)、液体空速为0.5 h^(-1)、臭氧相对投加量为2.3 g(O_(3))/g(COD)条件下,出水COD降至58.7 mg/L,TOC降至20.1 mg/L。GC-MS定性分析结果表明,长链二元酸工艺废水有机组分多为稳定的五元环、六元环结构,仅生化处理很难实现COD达标排放。GXNYJ-12,a strain which has excellent salt tolerance,is screened out and isolated to treat with high sulfates-containing organic wastewater generated from the long chain dibasic acid biological fermentation process.It can effectively treat with the long chain dibasic acid process wastewater with 6512 mg·L^(-1)of COD,20200 mg·L^(-1)of sulfate,and 31100 mg·L^(-1)of total salt.After aerobic biochemical treatment by this strain for 120 h,COD removal rate can reach95%.The biochemical effluent needs to be further treated by ozone catalytic oxidation.COD and TOC in final effluent decrease to 58.7 mg·L^(-1)and 20.1 mg·L^(-1),respectively when a self-made activated carbon composite supported catalyst(Fe2O_(3)/ACNT)is employed,liquid space velocity is 0.5 h^(-1),and relative ozone dosage is 2.3 g per gram of COD.GCMS qualitative analysis results show that most of organic components in long-chain diacid process wastewater contain stable five-membered ring and six-membered ring structure,which is difficult to achieve COD emission standard only by biochemical treatment.

关 键 词：高硫酸盐 有机废水 耐盐菌 臭氧催化氧化 长链二元酸 

分 类 号：X703[环境科学与工程—环境工程]