从运河水中提升污染的去除,通过将通风与浮式处理湿地相连接
Pham-Yen-Nhi Tran1,2, Thi-Viet-Huong Dao1,2, Thi-Kim-Quyen Vo3
1Key Laboratory of Advanced Waste Treatment Technology & Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam.
International journal of phytoremediation
|September 11, 2024
概括
空气化显著增强了用于污染水处理的浮式处理湿地 (FTW). 这种天然溶液可以改善去除COD,NH4+-N和大肠杆菌等污染物,同时促进植物生长.
科学领域:
- 环境工程 环境工程
- 废水处理技术 废水处理技术
- 生态工程生态工程生态工程
背景情况:
- 浮动处理湿地 (FTW) 为净化水和改善城市景观提供了一种可持续的方法.
- 污染的运河水带来环境和健康风险,需要有效的处理方法.
- 优化FTW性能对于最大限度地提高其生态效益至关重要.
研究的目的:
- 评估通风对FTW在处理受污染的运河水中的效率的影响.
- 为了比较关键污染物 (COD,NH4+-N,大肠杆菌,PO43--P,Fe) 的去除率,有空气和没有空气.
- 评估空气对FTW内植物生长的影响.
主要方法:
- 使用了3个带有通风的FTW (在2.5L min-1和1.0L min-1流量) 和3个没有通风的FTW.
- 监测了包括化学氧气需求 (COD), (NH4+-N),大肠杆菌, (PO43−-P) 和铁 (Fe) 在内的关键水质参数.
- 测量了溶解的氧气含量和植物生长速度 (特别是 *Phragmites australis*).
主要成果:
- 有空气的FTW保持了溶解氧水平高于6.5毫克L-1.1.
- 与非气化FTW相比,通风导致COD和NH4+-N的去除率几乎增加了三倍.
- 在空气化的FTW中,大肠杆菌的去除达到了大约99% (1.7-log减少),植物生长显著增强.
结论:
- 空气化是一种高效的策略,可以提高FTW的污染物清除效率.
- 由于通风而增加的溶氧水平会对微生物活动和植物健康产生积极影响.
- 有空气的FTW代表了处理受污染水体的卓越自然解决方案,提供了更好的性能和生态效益.
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