通过调节酸持续释放的调节黑色臭水的长期有效整治
Rui Wan1, Yunyi Zha2, Mengqi Wu2
1School of Ecology and Environment, Anhui Normal University, Wuhu, 241002, China. wanrui910@163.com.
Environmental monitoring and assessment
|August 19, 2023
概括
释放酸盐的生态混凝土通过减少污染物和气味,有效地修复了黑色臭水. 这种持续释放的方法可以长期改善水质,并防止再污染.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 材料科学 材料科学 材料科学
背景情况:
- 黑色臭水是电子受体缺陷造成的重大环境问题.
- 直接用酸盐进行整治的剂量面临过度释放和长期有效性有限的挑战.
研究的目的:
- 开发一种酸盐持续释放的生态混凝土 (ecoN-concrete),以有效地修复黑色臭水.
- 研究生态混凝土在改善水质方面的性能和机制.
主要方法:
- 通过将酸 (Ca(NO3) 2) 加入到混凝土块中来制造的生态N混凝土.
- 在使用生态N混凝土的反应堆中评估了污染物去除 (COD,度,氨,,硫酸盐).
- 在14天内监测酸盐和酸盐的释放,并在多次回收后评估性能.
- 分析了微生物社区的转变,使用16S rRNA测序.
主要成果:
- 生态混凝土显著消除了COD,度,氨,酸盐和硫酸盐,其效率取决于Ca (NO3) 2剂量.
- 酸盐释放得到控制 (总剂量的<25%),酸盐水平在14天内保持在低水平 (<1.5 mg/L).
- 经过三次回收,COD和度去除效率超过85%,显示出优异的持续释放性能.
- 微生物分析显示,减少了硫酸盐减少细菌的丰富性,增加了利用酸盐的细菌的丰富性.
结论:
- 环保混凝土为黑色臭水整治提供了长期有效的解决方案,防止重新变黑和重新恶臭.
- 控制酸盐释放机制减轻了与直接剂量相关的问题.
- 该技术调节微生物群落,以加强污染物降解和减少气味的产生.
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