来自受控制的城市固体废物填埋场的填埋液和缩物的表征和生物毒性
Xupicheng Ren1, Xiang He2, Deyong Kong3
1Institute of Resource and Civil Engineering, Northeastern University, Shenyang 110014, China.
概括
垃圾填埋场液及其处理缩物对水生生物具有季节性毒性. 有效的管理对于减轻这些废物流产生的环境风险至关重要.
科学领域:
- 环境科学 环境科学
- 水处理 处理水的方法
- 生态毒理学 生态毒理学
背景情况:
- 垃圾填埋场液和膜缩物 (纳米过/反透) 存在环境危害.
- 溶解有机物 (DOM) 的组成在液和缩物之间有所不同.
- 季节性变化会影响这些废物流的特性和毒性.
研究的目的:
- 调查垃圾填埋场液和缩物的物理化学性质和急性毒性的季节性变化.
- 描述溶解有机物 (DOM) 在液和缩物中的特征.
- 确定与毒性相关的和预测毒性的关键因素.
主要方法:
- 垃圾填埋场液和NF/RO缩物的采样在中国沈阳.
- 对DOM进行物理化学分析,包括水友物质 (HyI) 和性物质.
- 使用 *Artemia salina* (盐水) 进行急性毒性测试.
- 统计分析:主要组件分析 (PCA) 和区分分析.
主要成果:
- 水友性物质 (HyI) 主导的浸出物DOM (平均 68.18%) 的情况.
- 化物质被富含NF (86.92%) 和RO (62.78%) 的缩物.
- 垃圾填埋场液在夏季对盐菌有显著的毒性.
- 尽管进行了生物处理,但经过处理的缩物仍然有毒.
- PCA确定了物理化学变量和毒性之间的相关性.
结论:
- 季节性变化对垃圾填埋场液和缩剂的毒性有重大影响.
- DOM的组成不同,在膜缩物中积聚的湿性物质.
- 物理化学性质是急性毒性的关键预测因素.
- 有效的管理策略对于减少与垃圾填埋场废物流相关的环境风险至关重要.
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