双酶协同水解剩余污泥条件优化  

Effect of double enzyme hydrolysis of residual sludge and optimize

作　　者：李玉龙[1,2] 曹海军[1,2] 纪豪 李登新[1,2] LI Yulong CAO haijun JI Hao LI Dengxin(College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China)

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

出　　处：《环境工程学报》2016年第11期6649-6654,共6页Chinese Journal of Environmental Engineering

基　　金：高等学校博士学科点专项科研基金资助项目(20130075110006)

摘　　要：在碱性蛋白酶∶中性蛋白为3∶1的最优酶配比下,对剩余活性污泥进行水解提取蛋白质实验研究。实验以蛋白质提取率、SCOD/TCOD和有机质减少量三个指标来表现水解效果,探究温度、时间、pH以及加酶量对水解效果的影响。结果表明,蛋白质提取率、SCOD/TCOD和有机质含量变化三者存在较强的相关性,最佳水解条件是pH为9.0,反应时间4 h,加酶量5%和反应温度55℃。最佳水解条件下,污泥蛋白质提取率为65.89%,SCOD/TCOD为61.43%,有机质减少量81.05%。An experiment was conducted to extract protein hydrolysis from residual activated sludge when the best ratio of alkaline protease to neutral protein was 3 ∶ 1. The effects of temperature,time,pH,and amount of enzyme on hydrolysis were examined with reference to protein extraction rate,SCOD / TCOD,and organic matter loss. The experimental results showed strong correlation between protein extraction rate,SCOD / TCOD,and changes in organic matter content. The optimum hydrolysis conditions were： pH 9. 0,reaction time of 4 h,5%enzyme content,and reaction temperature of 55 ℃. Under these conditions,the sludge protein extraction rate was 65. 89%,SCOD / TCOD was 61. 43%,and organic matter loss was 81. 05%.

关 键 词：双酶 水解 优化 剩余污泥 

分 类 号：X705[环境科学与工程—环境工程]