增加生物质含量的增加促进了废水处理系统中酸盐的积累
Jianhua Zhang1, Wenke Zhang2, Xuejun Bi1
1School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China.
Bioresource technology
|June 21, 2023
概括
通过固体保留时间 (SRT) 调节生物质负荷 (BNL),有效地启动主流部分化 (PN). 这种方法通过抑制酸盐氧化细菌 (NOB) 和增强氨氧化细菌 (AOB) 活动,促进酸盐的积累.
科学领域:
- 环境科学 环境科学
- 环境工程 环境工程
- 微生物学 微生物学
背景情况:
- 部分化 (PN) 在Anammox工艺等先进的废水处理过程中至关重要.
- 在主流系统中实现稳定的部分化仍然具有挑战性,原因是温度和影响变化等因素.
- 生物质负荷 (BNL) 是影响化性能的一个关键参数.
研究的目的:
- 研究特定生物质负荷 (BNL) 对主流部分化 (PN) 启动的影响.
- 为了比较调节影响负载率 (NLR) 与固体保留时间 (SRT) 在实现PN方面的有效性.
- 为了确定有效酸盐积累的最佳条件.
主要方法:
- 五个并行测序批量反应堆 (SBR) 用普通化污泥运行.
- 通过调整具有影响力的NLR和SRT来操纵BNL.
- 监测了氨氧化细菌 (AOB) 和酸盐氧化细菌 (NOB) 的活动.
- 分析了亚酸盐积累比率 (NAR) 和废水中亚酸盐度.
主要成果:
- 通过NLR和SRT调整增加BNL导致酸盐的积累.
- 较高的影响力NLR导致较低的NAR (30% - 40%),随着时间的推移而减少.
- 控制SRT (30天) 以增加BNL,产生了高NAR (81.7%±4.4%) 的理想PN.
- 在使用SRT控制器时观察到有效抑制NOB和增加AOB到NOB活性比率 (1.5到7.8).
结论:
- 通过监管SRT来增加BNL是启动主流部分化的一个有希望的策略.
- 与NLR操纵相比,SRT控制提供了一种更有效的方法来实现稳定的化物积累.
- 通过SRT管理优化BNL可以提高废水处理PN过程的效率.
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