| 超声与碱联合预处理剩余污泥中温两相厌氧消化(英文) |
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| 作者单位： | 哈尔滨工业大学市政环境工程学院，哈尔滨工业大学市政环境工程学院，哈尔滨工业大学市政环境工程学院，哈尔滨工业大学市政环境工程学院，吉林建筑工程学院环境工程系 黑龙江哈尔滨150090吉林建筑工程学院环境工程系，吉林长春130021，黑龙江哈尔滨150090，黑龙江哈尔滨150090，黑龙江哈尔滨150090吉林建筑工程学院环境工程系，吉林长春130021，吉林长春130021 |
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| 摘 要： | 以长春西郊污水处理厂(A/O工艺)剩余活性污泥为研究对象,考察了超声与生石灰联合预处理对后续剩余污泥两相中温厌氧消化的影响。结果表明:联合预处理的剩余污泥经过厌氧消化后,平均VS去除率约为49.4%,污泥含水率从97.6%降低至93.8%。SEM分析表明两相反应器内污泥絮体被充分破坏。厌氧消化过程中在产酸相和产甲烷相内,NH4-N浓度均有提高,但是没有出现磷的显著释放。
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| 关 键 词： | 中温 厌氧消化 剩余活性污泥 超声预处理 碱预处理 两相 |
Two-Phase Mesophilic Anaerobic Digestion of Waste Activated Sludge by Ultrasonic and Alkaline Pretreatment |
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| Authors: | YIN Jun ZHANG Li-guo LIU Lei LIN Ying-zi ZHAO Chun-guang |
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| Institution: | YIN Jun1,2,ZHANG Li-guo1,LIU Lei1,LIN Ying-zi1,2,ZHAO Chun-guang2 |
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| Abstract: | Based on municipal waste activated sludge(WAS) obtained from Xijiao WWTP (A/O process) in Changchun, the effects of combined pretreatment of ultrasound together with CaO were investigated on subsequent two-phase mesophilic anaerobic digestion. The results indicate that the average volatile solids (VS) reduction is approximately 49.4%, and moisture content of effluent sludge decreases from 97.6% to 93.8% after anaerobic digestion. The sludge flocs are completely broken down in two phases by scanning electron microscopy (SEM) analysis. NH4-N concentrations in two phases are enhanced during anaerobic digestion. However, there exists no significant phosphorus release in two phases. |
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| Keywords: | mesophilic anaerobic digestion waste activated sludge(WAS) ultrasonic pretreatment alkaline pretreatment two-phase |
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