摘要
分别采用低温热水解和高铁酸钾对剩余污泥进行预处理,探讨两种方法的最佳反应条件,并在此基础上采用高铁酸钾联合低温热水解方法处理剩余污泥,同时考察了3种预处理方式下多糖、蛋白质及溶解性化学需氧量(SCOD)的变化情况,为剩余污泥的资源化利用提供理论依据.实验结果表明:低温热水解最佳反应条件为:80℃、24 h;高铁酸钾最佳反应条件为:投加量0.2 g/gTS、搅拌2 h;低温热水解、高铁酸钾、高铁酸钾联合低温热水解3种预处理方式均可有效促进剩余污泥的水解,经过预处理后的剩余污泥中SCOD、蛋白质和多糖大幅度提高;对剩余污泥破解效果表现为高铁酸钾联合低温热水解>低温热水解>高铁酸钾.
The sewage sludge was pretreated by using low-temperature heat hydrolysis and potassium ferrate.The optimum reaction conditions of the two methods were discussed.On this basis,potassium ferrate combined with low-temperature heat hydrolysis method was used to treat sewage sludge.The research also examined the three pretreatment methods of polysaccharide,protein and the change of soluble cod(SCOD),which provided the theoretical basis of sewage sludge resource utilization.The experimental results show that the single low temperature thermal hydrolysis optimum reaction condition is:80℃,24 h.The optimal reaction conditions of potassium ferrate were:0.2 g/gTS,stirring for 2 h.Low-temperature thermal hydrolysis,potassium ferrate and potassium ferrate combined with low-temperature thermal hydrolysis all effectively promote the hydrolysis of the remaining sludge.After pretreatment,SCOD,protein,and polysaccharide in the remaining sludge significantly increased.The cracking effect of the remaining sludge was as follows:potassium ferrate combined with low-temperature thermal hydrolysis>and low-temperature thermal hydrolysis>potassium ferrate.
作者
张珣
于静洁
王少坡
邱春生
ZHANG Xun;YU Jingjie;WANG Shaopo;QIU Chunsheng(School of Environmental and Municipal Engineering,TCU,Tianjin 300384,China;Tianjin Key Laboratory of Aquatic Science and Technology,TCU,Tianjin 300384,Chin;Municipal Experimental Teaching Demonstration Center of Environmental and Municipal Engineering,TCU,Tianjin 300384,China)
出处
《天津城建大学学报》
2019年第5期344-348,共5页
Journal of Tianjin Chengjian University
基金
国家自然科学基金(51678388)
关键词
低温热水解
高铁酸钾
剩余污泥
污泥水解
low-temperature thermal hydrolysis
potassium ferrate
sewage sludge
sludge hydrolysis
作者简介
张珣(1995—),男,天津人,天津城建大学硕士生;通讯作者:于静洁(1978—),女,教授,博士,从事水污染控制研究.E-mail:yjj.mary@163.com。
