城市污水厂污水及污泥挥发分对其热值的影响  

The effect of volatile component on the heat value of wastewater and sludge samples from WWTP

作　　者：郭劲松[1] 范莹[1] 高旭[1] 刘智萍[1] 马蜀[2] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]中煤国际工程集团重庆设计研究院,重庆400016

出　　处：《重庆大学学报（自然科学版）》2010年第11期134-138,共5页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(50508046);教育部科学研究重大项目(308020);重庆市自然科学基金资助项目(CSTC2009BB0029)

摘　　要：城市污水生物处理过程既是一个污染物物质转移变化的过程,也是一个能量转化利用的过程。以重庆市二级污水处理厂的污水和污泥作为研究对象,测定了污水及污泥的高位热值、挥发分和碳、氢、氧、氮、硫等元素含量,分析了挥发分对高位热值的影响。结果表明:挥发分与高位热值之间具有较好的相关性,挥发分小于30%时,高位热值与挥发分之间呈负相关;挥发分大于37%时,高位热值与挥发分之间呈正相关。通过采用Duong公式进行理论推算,发现挥发分小于28.26%时,高位热值与挥发分之间呈负相关;挥发分大于28.26%时,高位热值与挥发分之间呈正相关。实验结果与理论推算吻合较好,表明所提出的污水和污泥高位热值分析方法有效,且该方法拓展到污水测定可行。The municipal wastewater biology treatment process includes both pollutants transferring and energy utilization.The wastewater and sludge samples of several WWTP（wastewater treatment plant）in Chongqing are investigated.The heat value,volatile component and element content of those samples are determined.The effect of volatile component on heat value is analyzed.The results show that it has a good correlation between volatile component and heat value.The heat value has a negative correlation with volatile component when volatile component is below 30%,while it has a positive correlation with volatile component when volatile component is above 37%.The heat value is also calculated by the Dulong formula.The conclusions are pretty close：heat value has a negative correlation with volatile component when volatile component is below 28.26%,while has a positive correlation with it when volatile component is above 28.26%.It indicates that the analysis method for heat value of wastewater and sludge in this paper is effective,and it can be used in wastewater measurement.

关 键 词：污水 污泥 热值 元素分析 挥发分 

分 类 号：X703[环境科学与工程—环境工程]