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通过间歇性通风在连续插头流动无氧/有氧/无毒工艺中提高去除性能,处理低强度的城市污水

Xiyue Zhang¹, Xiyao Li¹, Liang Zhang¹

¹National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.

Bioresource technology

|November 5, 2023

概括

无氧/有氧/无氧 (AOA) 反应器中的间歇通风显著提高了低碳城市污水中的去除效率. 这种具有成本效益的策略可以将去除率提高到77.9%,而不会改变微生物群落.

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:

传统的生物除过程需要高碳来源和空气化能量.
在低碳比 (C/N) 的城市污水中实现先进的除是一个重大挑战.
无氧/有氧/无毒 (AOA) 工艺是增强去除的潜在替代方案.

研究的目的:

为了研究插头流AOA反应器中间歇性通风的有效性,以提高去除.
评估间歇性通风对城市污水中去除效率,操作参数和微生物群体结构的影响.
为了确定多基酸盐 (PHAs) 在间歇性通风下去除过程中的作用.

主要方法:

一个使用无氧/有氧/无毒 (AOA) 工艺的连续插头流反应堆运行了210天.
在有氧室中应用间歇性通风以优化内部碳源利用.
监测了去除效率 (NRE),有氧液压保留时间 (HRT),C/N比率和微生物群体结构.

主要成果:

间歇性通风显著提高了总无机去除效率 (NRE),达到77.9±3.2%.
该过程实现了高NRE,短有氧HRT为3.2小时,C/N比为3.3.
聚酸酸盐 (PHAs) 在去除 (48.0%) 中发挥了主导作用,主要是在交替的有氧/无毒室中,微生物群落结构没有显著变化.

结论:

间歇性通风是一种有效和经济的策略,用于增强连续插头流AOA系统中的去除.
这种方法有效地利用内部碳来源,减少对外部碳添加的需求.
间歇性通风的AOA工艺为城市废水处理中先进的除提供了一个可持续的解决方案.

关键词:

无氧/有氧/无毒的连续的插头-流程流程过程.间歇性通风间歇性通风低C/N的城市污水

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