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高度废水的低压刺激脱性能使用耐受微生物

Long Chen¹, Hai Xiang², Li-Ting Zhou¹

¹School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, Zhejiang, China; International Science and Technology Cooperation Platform for Low-Carbon Recycling of Waste and Green Development, Zhejiang Gongshang University, Hangzhou 310012, Zhejiang, China.

Bioresource technology

|April 11, 2024

概括

电刺激微生物反应器 (EMR) 有效地从高盐度废水中去除酸盐,性能优于传统方法. 这种创新方法提高了微生物对盐的耐受性,并在具有挑战性的环境中提高了脱效率.

科学领域:

环境科学环境科学
微生物学微生物学
化学工程是化学工程的重要组成部分.

背景情况:

高度废水中的酸盐污染对环境和健康构成重大风险.
传统的生物脱方法与高盐度条件作斗争,导致性能差.

研究的目的:

调查电刺激微生物反应器 (EMR) 对于从高盐度废水中去除酸盐的有效性.
在盐水压力下阐明EMR中增强脱化背后的机制.

主要方法:

使用低电压 (1.2V) 电刺激微生物反应器 (EMR),并将其性能与传统微生物反应器 (MR) 进行比较.
分析了酸盐去除动力学,微生物盐入策略,细胞外聚合物质 (EPS) 生产和微生物社区组成.
在多个循环中对高盐度废水进行了长期处理实验.

主要成果:

与MR (0.0125-0.0478h-1) 相比,EMR在盐度从1.5%到6.5%的范围内显示出明显更高的酸盐去除动力参数 (kNO3-N:0.0166-0.0808h-1),而不是MR (0.0125-0.0478h-1).
低压刺激增强了微生物的盐耐受性和EPS分泌,同时丰富了Pseudomonas和Nitratireductor等色耐受性脱剂.
在18个循环中,EMR在4.69%的盐度废水中实现了73.64%的NO3-N去除效率,超过了MR的54.67%效率.

结论:

电刺激微生物反应器为高度废水的高效脱化提供了一个有希望和创新的解决方案.
低压电刺激是一种可行的策略,可以克服生物处理在盐水环境中的局限性.
增强的性能归因于微生物适应机制的改善和特定微生物群落的丰富.

关键词:

脱化过程中的脱.高盐度废水的废水具有很高的盐度.低压刺激的低压刺激对盐的耐受性盐的耐受性

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