生化-超滤-纳滤组合工艺在餐厨垃圾废水处理中的应用  

Application of Biochemical-Ultrafiltration-Nanofiltration Combined Process in Kitchen Waste Water Treatment

作　　者：杨伟球[1] YANG Weiqiu(Suzhou Polytechnic Institute of Agricuture,Suzhou 215008,China)

机构地区：[1]苏州农业职业技术学院,江苏苏州215008

出　　处：《水处理技术》2024年第6期153-156,共4页Technology of Water Treatment

基　　金：2019年江苏高校“青蓝工程”资助项目“优秀青年骨干教师”研究成果(苏教师〔2019〕3号)。

摘　　要：采用除渣预处理+厌氧反应器+二级AO+外置式超滤+NF(双膜法)组合工艺进行餐厨垃圾废水处理,研究结果表明,当进水COD为72315~78562 mg/L时,NF系统产水COD为264~347 mg/L,对有机物的去除率达到99.5%~99.7%,研究了NF系统压力、温度、pH和运行时间对膜分离性能的影响。NF出水可以达到《污水排入城镇下水道水质标准》(GB/T 31962-2015)标准B等级指标,NF系统浓水用于静脉产业园垃圾焚烧炉飞灰固化。最后,对工程投资、运行费用和经济效益进行了分析和讨论。The engineering application by combined slag pretreatment,anaerobic reactor,two-stage AO process,and external ultrafiltration and nanofiltration(two-membrane process)for wastewater treatment from food waste was introduced.In the steadily running period,the COD concentration of effluent stabilizes between 264~347 mg/L under the COD concentration of influent was 72315~78562 mg/L,and the COD removing rate reaches 99.5%~99.7%.This paper studied the effect of the pressure,temperature,pH and running time of nanofiltration on the membrane separation performance.The result showed that the water quality can meet the requirement for the Grade B index of the standard of quality of sewage discharged into the urban sewer(GB/T 31962-2015).The concentrated water from the nanofiltration system was used for the solidification of fly ash from the waste incinerator in the vein industrial park.Finally,the project investment,operation cost and economic benefit are analyzed and discussed.

关 键 词：餐厨垃圾废水 厌氧反应器 外置式超滤 纳滤 双膜法 

分 类 号：X799.3[环境科学与工程—环境工程]