在三级脱过程中,碳源调节了废水废水中的溶解有机
Xian Cui1, Jiaqian You1, Kewei Liao1
1State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, PR China.
Environmental science & technology
|February 7, 2024
概括
选择合适的碳源对于废水处理至关重要. 与乙相比,甲醇显著减少溶解有机 (DON),影响废水质量和藻类生长.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 水处理工程水处理工程
背景情况:
- 全球肥胖化需要更严格的排放限制.
- 溶解有机 (DON) 是污水缩潜力的重要贡献者.
- 了解DON动态是先进废水脱的关键.
研究的目的:
- 研究不同碳来源对在脱后系统中溶解有机 (DON) 生产的影响.
- 确定废水DON变化的主要驱动因素.
- 阐明微生物群落和代谢功能在调节DON的作用.
主要方法:
- 使用甲醇和酸盐作为碳来源对DON度进行比较分析.
- 开发和应用数学模型来识别DON的关键组件.
- 使用部分最小平方路径建模来评估微生物社区和代谢功能影响.
主要成果:
- 甲醇产生的DON度明显低 (0.84±0.03毫克/升) 比乙酸盐 (1.11±0.02毫克/升).
- 生产的DON,而不是共享或去除的DON,是废水DON变化的主要驱动因素 (Pearson r = 0.992).
- 微生物群落结构 (r = 0.947),而不是代谢功能 (r = 0.040),显著影响了产生的DON.
结论:
- 碳来源的选择极大地影响了微生物与DON的相互作用和废水的DON水平.
- 微生物社区结构决定了产生和重新捕获DON的能力.
- 这项研究强调了DON管理,而不仅仅关注废水处理中的总去除效率.
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