利用剩余活性污泥水解蛋白质制备蛋白质泡沫灭火剂的研究

Study on preparation of protein foam extinguishing agent by protein hydrolyzate from residual activated sludge

将武汉市水质净化厂剩余活性污泥,经过酸、碱水解以制备水解蛋白质,结果表明:酸法水解比碱法效果好,经过pH为1.0、水解温度为121℃、水解时间4h的水解后,用Follin酚法测定其蛋白质含量为59.2%(干污泥),而碱法水解时(pH为11.5～12.5,水解时间为2～6h),其水解液无法过滤,因而有待进一步研究或不能采用;将酸解液过滤并浓缩,经过适当配制后,测试其灭火特性,结果表明:粘度、沉淀物、发泡倍数、90%火焰控制时间、灭火时间、抗烧时间等均达到中华人民共和国公共安全行业标准(GA219-1999).

Protein hydrolyzate was prepared by hydrolyzing residual activated sludge from the dispose of sewage industry in Wuhan,the results showed that the method of acid hydrolyzation was better than that of alkali hydrolyzation,and the method of alkali hydrolyzation was not usable,hydrolyzing residual activated sludge for protein on the condition of pH 1.0 and temperature 121℃,the content of protein reached 59.2%,When foam extinguishing agent had been prepared by protein,its properties allreached the public safe standard of the People's Republic of China(GA 219-1999).