废水厂中的微塑料:来源,特征,分发和清除技术的审查
Zhihao Hu1, Yongjun Sun1, Jun Zhou1
1College of Urban Construction, Nanjing Tech University, Nanjing 211816, China.
Journal of contaminant hydrology
|October 25, 2024
概括
微塑料 (MP) 是废水中发现的重要污染物. 本综述详细介绍了废水处理厂 (WWTP) 中的来源,形式和清除效率,并强调了初级处理.
科学领域:
- 环境科学 环境科学
- 水处理工程水处理工程
- 污染控制 污染控制
背景情况:
- 微塑料 (MP) 是来自不同来源的普遍环境污染物.
- 污水处理厂 (WWTP) 是微塑料进入水生生态系统的关键通道.
- 了解WWTP中的MP分布和去除对于减轻环境污染至关重要.
研究的目的:
- 综合审查废水处理厂中的微塑料的分配和清除.
- 评估传统和新型MP删除技术的有效性.
- 为改善废水处理过程提供见解,以减少微塑料的释放.
主要方法:
- 在WWTP中测量微塑料分布和去除数据的文献综述.
- 分析MP特征,包括来源,形式 (纤维,碎片,颗粒) 和尺寸 (<0.5mm,0.51mm,15mm).
- 在包括新技术在内的初级,二级和三级处理阶段评估MP清除效率.
主要成果:
- 初级处理,特别是沉积和脱脂,可以去除很大一部分MP (56.888.4%).
- 二次处理 (活性污泥) 显示了可变的MP去除效率 (42.199.2%).
- 三级处理阶段 (凝血,过,消毒) 促进了MP的去除,以及新兴的技术,如膜分离和光催化.
结论:
- 污水处理厂的微塑料清除能力各不相同.
- 初级治疗是非常有效的,而二级和三级治疗提供额外的去除.
- 新型技术有望提高微塑料的去除能力,并减少WWTPs的环境排放.
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