| 生活垃圾堆肥渗滤液污染物组成与演化规律研究 |
| 摘要点击 2730 全文点击 1596 投稿时间：2012-10-15 修订日期：2012-12-06 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 堆肥 渗滤液 无机阴离子 重金属 有机物 |
| 英文关键词 composting leachates inorganic anions heavy metals organic matters |
| 作者 | 单位 | E-mail | | 李丹 | 东北农业大学生命科学学院, 哈尔滨 150030
中国环境科学研究院水环境系统工程研究室, 北京 100012 | lidangaga@126.com | | 何小松 | 中国环境科学研究院水环境系统工程研究室, 北京 100012
中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012 | | | 席北斗 | 中国环境科学研究院水环境系统工程研究室, 北京 100012
中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012 | xibeidou@263.net | | 魏自民 | 东北农业大学生命科学学院, 哈尔滨 150030 | weizm691120@163.com | | 潘红卫 | 东北农业大学生命科学学院, 哈尔滨 150030
中国环境科学研究院水环境系统工程研究室, 北京 100012 | | | 赵国鹏 | 东北农业大学生命科学学院, 哈尔滨 150030
中国环境科学研究院水环境系统工程研究室, 北京 100012 | | | 崔东宇 | 中国环境科学研究院水环境系统工程研究室, 北京 100012
中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012 | |
|
| 中文摘要 |
| 为阐明堆肥渗滤液的组成和演化规律,寻找合适的处理技术,研究了某堆肥厂不同堆肥时期渗滤液中无机阴离子、氨氮、重金属及有机物等的组成和演化特性. 结果显示,随着堆肥的进行,EC及F-、Cl-、SO42-、NH4+-N的浓度呈下降趋势,而NO2--N、NO3--N及Org-N的含量与渗滤液的氧化还原氛围有关; 渗滤液中重金属Pb、Cd、Cu、Zn及类金属As随堆肥进行浓度呈下降趋势,而重金属Cr、Ni、Fe、Mn随堆肥进行浓度上升; 堆肥渗滤液有机物主要为类蛋白物质,但也含有类腐殖质物质,适合先生化后物化处理依次去除; 堆肥过程中类蛋白物质相对含量先增加后减少,而类腐殖质相对含量先减少后增加. 堆肥渗滤液盐分和重金属含量较高,不宜堆肥回流利用,应先生化后物化处理达标后排放. |
| 英文摘要 |
| The composition and evolution characteristics of inorganic anions, ammonia, heavy metals and organic compounds in leachates with different composing times were studied in a composting plant in order to clarify its composition and evolution and search for a suitable processing technology. The results showed that concentrations of EC, F-, Cl-, SO42- and NH4+-N decreased during the composting process, while the contents of NO2--N, NO3--N and Org-N were related to the oxidation reduction atmosphere of leachates. The Pb, Cd, Cu, Zn and As concentrations in leachates exhibited a decrease trend during the composting process, while contents of heavy metals Cr, Ni, Fe, Mn showed an increase trend with increasing composting time. The composting leachate organics comprised mainly of protein-like substance, but also consisted of humic-like substances. The leachate organics were suitable to be treated by biochemical process firstly, and then by physico-chemical technique. The relative content of protein-like substances firstly increased and then decreased, while that of humic-like matter exhibited an opposite trend. The contents of salinity and heavy metal in compost leachates were high, which caused the improper reflux utilization of leachates. The compost leachates should be treated by the combined biochemical and physico-chemical process before emission. |
|
|
|
