罗璐;施周;周先敏;李广超;周石庆;邓靖;

• 1:湖南大学土木工程学院
• 2:湖南大学建筑安全与节能教育部重点实验室
• 3:浙江工业大学建筑工程学院

摘要(Abstract)：

研究了溶菌酶在改善剩余污泥脱水性能方面的效果，以污泥真空抽滤泥饼含水率、污泥毛细脱水时间(Capillary Sunction Time, CST)来表征污泥脱水性能，分别考察了酶投加量、污泥初始pH值、反应温度、反应时间等影响因素对酶促污泥脱水作用的影响。结果表明：溶菌酶在污泥脱水反应中充分发挥了水解破壁的功能，导致细胞结构的破坏，显著降低了污泥含水率及CST,对污泥脱水反应有明显的促进作用；基于响应面分析，各影响因素对污泥抽滤泥饼含水率和污泥CST的显著性由大到小为酶投加量、反应温度、污泥pH值，建立了相关多元二次回归模型并进行了有效性验证，获得了各影响因素对于酶促污泥脱水反应的最佳反应条件；酶促污泥脱水反应在适当溶菌酶投加量(15%)、较短的反应时间(0.5 h)内、室温条件(20℃)下、无需调节污泥pH值(pH=6)即可得到较好的脱水效果，污泥含水量下降25%,污泥CST下降65%。因此，采用溶菌酶作为城市污水厂剩余污泥调理剂，可显著增进污泥的脱水性能。

关键词(KeyWords)： 环境工程学;溶菌酶;剩余污泥;污泥脱水

Abstract:

Keywords:

基金项目(Foundation): 浙江省自然科学基金项目(Y18E080110)

作者(Authors): 罗璐;施周;周先敏;李广超;周石庆;邓靖;

DOI: 10.13637/j.issn.1009-6094.2019.0486

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