超声—溶菌酶协同处理强化纺织印染污泥脱水性能研究  

Research on the enhanced dewatering performance of textile dyeing sludge by ultrasonic-lysozyme synergistic treatment

作　　者：薛飞 陈钦 郭庆峰[1,2] 李登新 XUE Fei;CHEN Qin;GUO Qingfeng;LI Dengxin(School of Environmental Science and Engineering,Donghua University,Shanghai 201620;National Environmental Protection Textile Pollution Prevention Engineering Technology Center,Donghua University,Shanghai 201620)

机构地区：[1]东华大学环境科学与工程学院,上海201620 [2]东华大学国家环境保护纺织污染防治工程技术中心,上海201620

出　　处：《环境污染与防治》2020年第5期528-533,共6页Environmental Pollution & Control

基　　金：国家自然科学基金钢铁联合研究基金资助项目(No.U1660107);中国“纺织之光”应用基础研究项目(No.J201503);东华大学研究生创新基金资助项目(No.CUSF-DH-D-201658)。

摘　　要：污泥脱水是实现污泥减量和减容的关键处理工艺。以纺织印染污泥为研究对象,考察超声能量密度和超声时间对超声—溶菌酶协同处理纺织印染污泥脱水性能的影响。结果表明,适当的超声能量密度和超声时间能够对印染污泥脱水产生积极作用,且超声预处理的最佳工况为超声能量密度2.0 W/mL、超声时间20 min。在最佳工况下泥饼含水率为62.3%,污泥比阻(SRF)为(3.21±0.12)×1012 m/kg。溶胞效率表现为超声—溶菌酶协同处理>超声处理>溶菌酶水解。污泥经过超声—溶菌酶协同处理后,体积减小近50%,脱水性能明显改善。Sludge dewatering is a key step of realization of sludge reduction and volume reduction.The effect of ultrasonic power density and ultrasonic time on the dewatering performance of textile dyeing sludge by ultrasonic-lysozyme synergistic treatment was investigated.The results indicated that proper ultrasonic power density and ultrasonic time showed positive effect on dewatering performance of textile dyeing sludge.To be exact,the optimal ultrasonic power density and ultrasonic time should be set to 2.0 W/mL and 20 min.Under the optimal layout of the above mentioned conditions,the moisture content of mud cake was 62.3%,and SRF was(3.21±0.12)×1012 m/kg.Lysis efficiency was in the order of ultrasonic-lysozyme synergistic treatment>ultrasonic treatment>lysozyme hydrolysis.At the same time,after ultrasonic-lysozyme synergistic treatment,the sludge volume decreased by nearly 50%compared with the initial volume,indicating the significant improvement in dewatering performance.

关 键 词：纺织印染污泥 溶菌酶 超声 协同处理 

分 类 号：X791[环境科学与工程—环境工程]