通过含有不同基质的建筑湿地去除:性能,微生物和机制
Yuannan Long1, Guanlong Yu1, Jianwu Wang1
1School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410014, PR China; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha, PR China.
Bioresource technology
|October 3, 2024
概括
子造湿地 (CWs) 实现了93.18%的去除,优于其他基板. 这种方法有效地固定了,降低了其在废水处理中的生物可用性.
科学领域:
- 环境科学 环境科学
- 环境工程 环境工程
- 水处理 处理水的方法
背景情况:
- 建筑湿地 (CWs) 越来越多地用于废水处理.
- (Cd) 是一种有毒的重金属,具有重大环境和健康风险.
- 评估不同的CW基板对于优化重金属去除至关重要.
研究的目的:
- 为了比较四种建筑湿地 (CW) 基板的去除性能:石 (G-CW),磁铁 (M-CW),子 (C-CW) 和生物炭 (B-CW).
- 研究CW中去除和生物可用性降低背后的机制.
- 评估对植物抗氧化剂系统和微生物群落的影响.
主要方法:
- 使用不同的基板建造了四种类型的CW:石,磁铁,子和生物炭.
- 在研究期间,对去除效率进行了监测.
- 分析了基质中的积和其物种化 (生物可用性).
- 评估了植物抗氧化酶活动和微生物群体组成.
主要成果:
- 子造湿地 (C-CW) 显示了最高的去除效率,为93.18%.
- C-CW的有效性归因于丰富的有机物质和增强的溶解氧消耗,促进微生物和植物性的去除.
- 在C-CW基板中的积累显著增加,其中较大比例与有机物和残留物结合,降低了生物可用性.
- 所有测试的CW都保持了植物抗氧化系统,表明没有压力,并支持像Saccharimonadales和Micropruina这样的主导的耐品种.
结论:
- 子是建筑湿地的高效基质,可以从废水中去除.
- 使用C-CW显著降低了的生物可用性,因为它会在基质内固定.
- 建筑湿地,特别是那些有子基板的湿地,为处理重金属污染的废水提供了可持续和有效的解决方案.
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