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通过微空气化战略增强煤炭气化废水处理的水解酸化过程:微氧环境的作用

Shengqiang Hei¹, Biming Liu², Hui Xu³

¹State Key Laboratory of Regional Environment and Sustainability, School of Environment, Tsinghua University, Beijing 100084, China; School of Geography and Planning, Ningxia University, Yinchuan 750021, China.

|May 30, 2025

概括

微空气显著增强无氧水解酸化 (HA) 处理有毒的工业废水. 最佳的溶氧水平可以改善污染物清除和微生物活动,为废水排毒提供了一个有前途的战略.

科学领域:

环境科学环境科学
环境生物技术环境生物技术
环境化学环境化学

背景情况:

无氧化水解酸化 (HA) 是处理有毒和反抗性有机物的一个关键过程.
微透气是一种提高HA的成本效益的策略,但其在实际工业废水中的应用和潜在的分子机制需要进一步研究.

研究的目的:

通过微空气化水解酸化 (HA) 来研究实际煤气化废水的降解性能.
为了确定最佳的溶氧 (DO) 度,以增强污染物去除和微生物活动.
阐明涉及功能基因和酶在污染物降解中的分子水平机制.

主要方法:

微空气化HA用于处理各种DO度的煤气化废水.
测量了污染物去除效率 (COD,NH3N,TOC,总) 和生物降解性.
使用分子技术分析了关键功能酶的活动和相关基因的丰富性.

主要成果:

最佳的污染物去除效率 (COD: 53.3%,NH3N: 14.63%,TOC: 56.5%,总: 48.1%) 在0.2-0.3 mg/L DO.
微空气显著增加了参与化合物降解的酶的活性.
在最佳的DO条件下,与有机水解,反抗性污染物降解,环分裂和可选物种相关的基因的丰富性增加了.

结论:

微空气化HA对于处理耐火工业废水,特别是对于化合物,是有效的.
0.2-0.3毫克/升的最佳DO范围增强了污染物去除和微生物降解途径.
这项研究为在工业废水排毒预处理中应用微风化提供了理论基础.

关键词:

煤气化废水是煤炭气化的废水.功能性酶是一种功能性酶.水解酸化酸化的方法微氧环境是一个微氧环境.类化合物类化合物

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