微塑料在有氧和无氧连续批量反应器中的长期存在:对处理,微生物多样性和微塑料形态的影响
S Sethulekshmi1, Amritanshu Shriwastav1
1Environmental Science and Engineering Department, Indian Institute of Technology Bombay, Mumbai 400 076, India.
Water research
|December 24, 2023
概括
污水处理厂产生二次微塑料 (MP) 和漏化学物质. 有氧治疗比无氧治疗更受MP的影响,影响微生物群落.
科学领域:
- 环境科学 环境科学
- 环境化学环境化学
- 微生物学 微生物学
背景情况:
- 污水处理厂 (STP) 是生态系统中微塑料 (MP) 的关键来源和沉积点.
- 在STP中,国会议员的长期命运,包括二次国会议员生成和添加漏,研究不足.
- 了解MP对STP效率和微生物群落的影响对于环境保护至关重要.
研究的目的:
- 研究有氧和无氧污水处理对微塑料的长期影响.
- 评估微塑料对污水处理过程效率的影响.
- 评估微塑料对处理系统中的微生物联盟的影响.
主要方法:
- 微塑料 (聚乙烯,聚烯,尼龙) 被引入有氧和无氧序列批量反应器 (SBR) 在262MPs/L下120天.
- 分析了二次微塑料的产生,增材液,处理效率和微生物多样性.
- 对有氧和无氧处理条件之间的影响的比较.
主要成果:
- 观察到大量的二次微塑料 (<300微米),从最初的水平增加到1000±71MPs/L (有氧) 和650±141MPs/L (无氧).
- 添加剂如环胺和八度醇在反应堆废水中溶解.
- 污水处理效率没有受到微塑料存在的显著影响,但有氧SBR中的微生物多样性下降,无氧SBR没有影响.
结论:
- 污水处理过程可以产生二次微塑料和释放化学添加剂,从而导致污染.
- 有氧处理系统比无氧系统更容易受到微塑料诱导的微生物社区破坏.
- STP 需要对微塑料管理进行进一步的调查,以减轻环境污染和保护微生物生态系统.
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