固定化厌氧微生物处理含五氯酚废水

时间:2023-04-25 20:29:57 环境保护论文 我要投稿
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固定化厌氧微生物处理含五氯酚废水

摘要: 在厌氧条件下,分别以海藻酸钙(CA)和聚乙烯醇(PVA)为固定化微生物包埋剂,采用正交试验法,确定了其适宜的包埋条件。对形成的两种固定化微生物小球进行了比较,其中CA球的机械强度及吸附性能不及PVA球,但传质性能强于PVA球。在低负荷下CA球的PCP去除率高于PVA球,在高负荷下,则反之。固定化微生物对废水中PCP处理效率均优于未包埋的活性污泥。 Abstract: The optimal conditions for immobilizing anaerobic sludge acclimated for PCP biodegradation were determined through orthogonal-tests by using Calcium Alginate(CA) and PVA as the entrapped carrier,respecitively.The two kinds of immobilized pellets formed were compared each other,and the results show that CA pellets are weaker than PVA ones in mechanical intensity and the ability of adsorption,but are better in mass transfer.The removal rate of PCP by CA pellets is higher than that by PVA one at lower loading,while an opposite performance can be obtained at higher loading.PCP biodegradation efficiency treated by both CA and PVA pellets is better than that by suspended cultures. 作 者: 李小明    杨朝晖    李海英    陈昭宜    LI Xiao-ming    YANG Zhao-hui    LI Hai-yin    CHEN Zhao-yi   作者单位: 湖南大学环境科学与工程系,  期 刊: 湖南大学学报(自然科学版)  ISTICEIPKU   Journal: JOURNAL OF HUNAN UNIVERSITY(NATURAL SCIENCES)  年,卷(期): 2001, 28(2)  分类号: X172  关键词: 五氯酚    厌氧降解    固定化   

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