胞外多聚物对污泥的调理
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2019-03-22 22:41:40
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胞外多聚物对污泥的调理2010年第29卷第7期CHEMICALINDUSTRYANDENGINEERINGPROGRESS·1369·化工进展胞外多聚物对污泥的调理马军军,周迟骏(南京工业大学环境学院,江苏南京210009)摘要:采用NaOH法、加热法、蒸汽法、离子交换法4种方法分别提取啤酒厂的剩余活性污泥的胞外多聚物(EPS),并研究其絮凝性能及对污泥的调理作用。结果表明NaOH法提取剩余污泥的EPS絮凝率45.4%,EPS能改善污泥沉降性能,且NaOH法提取的EPS可以使污泥的比阻下降15.2%,加快污泥的过滤速度,从而利于污泥的脱水性能。关键词:生物絮凝剂;胞外多聚物;絮凝;脱水中图分类号:X703文献标识码:A文章编号:1000–6613(2010)07–1369–04SludgeconditioningwithextracelluarpolymericsubstancesMAJunjun,ZHOUChijun(CollegeofEnvironment,NanjingUniversityofTechnology,Nanjing210009,Jiangsu,China)Abstract:Polymericsubstances(EPS)inbrewerysurplusactivatedsludgewereextractedandcomparedwithfourdifferentmethodsofNaOH,heating,streamingandiron-exchange.TheEPSobtainedwasusedforsludgeflocculationandconditioning.TheEPSextractedwithNaOHmethodshowed45.4%flocculationrate.TheEPSwasbeneficialforsludgesettlingandfiltering,becauseofthatthespecificresistanceofsludgecouldbedeclinedby15.2%withtheEPSextractedwithNaOHmethod.Keywords:extracelluarpolymericsubstance;flocculation;dewatering开发有效的污泥脱水技术对污水厂污泥的处置和污泥的资源化
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