摘要
采用超声-溶菌酶协同工艺处理印染污泥,考察超声功率和超声时间对印染污泥溶胞效率的影响。结果表明,超声预处理能够有效提高溶菌酶对印染污泥的溶胞效果,超声与溶菌酶协同处理印染污泥的溶胞工艺的最佳条件为:超声功率为200 W、超声时间20 min。处理后,上清液中SCOD、多糖与蛋白质的浓度分别增加到(221.3±5.97),(79.3±3.04),(50.5±1.87)mg/g TSS,相较于单独溶菌酶水解,分别提高了193%,130%和98%。协同处理后的印染污泥在50~100℃,250~300℃和350~400℃三个失重阶段,失重速率分别为0.27,0.58,0.28%/min,明显低于单独溶菌酶水解。与单独溶菌酶水解相比,协同处理后污泥絮体结构更为松散,孔隙结构更发达。
Ultrasonic-lysozyme synergistic process was used to promote the effect of textile dyeing sludge lysis.The effects of ultrasonic power and ultrasonic time on the lytic efficiency were investigated.The results showed that ultrasonic could facilitate the effect of lysozyme on sludge lysis,the optimum conditions of ultrasonic-lysozyme synergistic process were:the ultrasonic power of 200 W,ultrasonic time of 20 min.After synergistic treatment,the concentrations of SCOD,polysaccharide and protein in the sludge supernatant were increased to(221.3±5.97),(79.3±3.04),(50.5±1.87)mg/g TSS,respectively.The concentrations of SCOD,polysaccharide and protein increased by 193%,130%and 98%,respectively,compared with lysozyme hydrolysis alone.In the three weightlessness stages of 50~100℃,250~300℃and 350~400℃,the weightlessness rates of sludge after ultrasonic-lysozyme synergistic treated were 0.27,0.58%/min and 0.28%/min,respectively,which were significantly lower than those by only lysozyme hydrolysis.Compared with single lysozyme hydrolysis,the sludge after synergistic treated has better looseness degree and pore structure.
作者
薛飞
陈钦
许士洪
李登新
XUE Fei;CHEN Qin;XU Shi-hong;LI Deng-xin(School of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;National Environmental Protection Textile Pollution Prevention Engineering Technology Center,Donghua University,Shanghai 201620,China)
出处
《应用化工》
CAS
CSCD
北大核心
2020年第8期1933-1937,共5页
Applied Chemical Industry
基金
国家自然科学基金-钢铁联合基金(U1660107)
中国“纺织之光”应用基础研究项目(J201503)
东华大学研究生创新基金(CUSF-DH-D-201658)。
关键词
印染污泥
减量化
溶菌酶
超声
协同处理
textile dyeing sludge
reduction
lysozyme
ultrasonic
synergistic treatment
