新型硫酸盐减少与同时化和自性脱过程相结合,用于从盐水废水中去除和有机物
Yu-Lin Han1, Xian-Zhong Zhang2, Hong-Bo Liu3
1MOE Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China.
Environmental science & technology
|July 10, 2023
概括
这项研究将无氧膜生物反应器 (AnMBR) 与膜气化生物膜反应器 (MABR) 集成,以实现高效的废水处理. 综合系统实现了高化学氧气需求和总去除,而膜污染最小.
科学领域:
- 环境工程 环境工程
- 微生物生态学 微生物生态学
- 废水处理技术 废水处理技术
背景情况:
- 减少硫酸盐和去除对于废水处理至关重要.
- 整合无氧和有氧过程可以提高效率和资源回收.
研究的目的:
- 展示一种新的集成无氧膜生物反应器 (AnMBR) 和膜气化生物膜反应器 (MABR) 系统.
- 评估系统在同时消除化学氧需求 (COD),减少硫酸盐,化和自化脱的效率.
- 评估系统稳定性,膜污染和微生物社区动态.
主要方法:
- 将AnMBR用于COD去除和硫酸盐减少与MABR用于化和自性脱的集成.
- 控制运行,具有特定的N/S和COD/N比率.
- 使用16S rRNA基因测序进行微生物社区分析.
主要成果:
- 在可变影响条件下,AnMBR-MABR系统实现了>95%的COD去除和>75%的TN去除.
- 在MABR生物膜中积累的元素硫 (S0),作为电子捐赠者用于脱.
- 确定了关键的微生物参与者: *Nitrospira*用于化和 *Thiobacillus*用于硫化驱动的脱.
- 经过170天的运行,没有观察到膜污染.
结论:
- 集成的AnMBR-MABR系统为废水处理提供了高效和稳定的解决方案.
- 该过程显示出出色的电子供体和氧气利用率,适用于低COD/N比率的废水.
- 优点包括小型足迹,模块化和有效的污染物清除.
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