Preparation and characteristics of bacterial polymer using pre-treated sludge from swine wastewater treatment plant
Preparation and characteristics of bacterial polymer using pre-treated sludge from swine wastewater treatment plant
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生猪污水处理厂预处理污泥制备细菌聚合物及其特性
DOI：
10.1016/j.biortech.2013.11.037
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发表时间：
2014-01-01
影响因子：
11.4
通讯作者：
Peng, Lanyan
中科院分区：
文献类型：
--
作者：
Guo, Junyuan;Yang, Chunping;Peng, Lanyan
对不同浓度的悬浮污泥(SSS)进行灭菌、碱热和酸热处理，并以处理后的污泥为原料，生产生物絮凝剂细菌R3。发酵60h后，提取出3种形式的生物絮凝剂(发酵液、胶囊和粘液)，灭菌和碱热处理污泥的最大发酵液生物絮凝剂L-1的产量分别为2.9g和4.1g，而酸热处理污泥的最大微生物絮凝剂L-1的产量为1.8g L-1。与45、55和65g L-1相比，15、25和35g L-1的SS产生的生物絮凝剂产量更高。生物絮凝剂在1.0 L高岭土悬浮液中加入0.5gCa~(2+)作为调节剂，其最大絮凝活性分别为94.5%和92.8%。结果表明，废水污泥可作为制备生物絮凝剂的原料。(C)2013爱思唯尔有限公司。保留所有权利。
Sterilization, alkaline-thermal, and acid-thermal treatments were applied to different suspended sludge solids (SSS) concentrations and the pre-treated sludge was used as raw material for bioflocculant-producing bacteria R3 to produce bioflocculant. After 60 h of fermentation, three forms of bioflocculant (broth, capsular, and slime) were extracted, and maximum broth bioflocculant of 2.9 and 4.1 g L-1 were produced in sterilized and alkaline-thermal treated sludge as compared to that of 1.8 g L-1 in acid-thermal treated sludge. Higher bioflocculant quantity was produced in SS of 15, 25, and 35 g L-1 compared to that produced in SS of 45, 55, and 65 g L-1. Bioflocculant combined with 0.5 g Ca2+ in 1.0 L kaolin suspension acted as conditioning agent, and maximum flocculating activity of 94.5% and 92.8% was achieved using broth and slime bioflocculant, respectively. The results demonstrated that wastewater sludge could be used as sources to prepare bioflocculants. (C) 2013 Elsevier Ltd. All rights reserved.