用酵母增强的活性污泥改善了废水处理中的去除:重点关注溶解有机降解
Pengfei Wan1, Ying Liu1, Bo Li1
1School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo, 315211, China.
Environmental research
|October 18, 2024
概括
一种新型酵母菌株Candida tropicalis O2有效降解废水中的溶化有机 (DON),显著降低了化风险. 这种方法提高了废水处理厂 (WWTP) 的整体去除.
科学领域:
- 环境微生物学 环境微生物学
- 水处理工程水处理工程
背景情况:
- 废水废水中的溶解有机 (DON),特别是水友性DON,促进植物浮游生物的生长,并加剧了育.
- 活性污泥中的细胞外聚合物物质 (EPS) 水解中的蛋白质,氨基酸和核酸是主要的DON来源.
研究的目的:
- 选和评估一种酵母菌株,Candida tropicalis O2,对其在EPS内降解DON的有效性进行评估.
- 评估酵母增强活性污泥 (AS-Y) 在测序批次生物反应器 (SBR) 中的性能,以改进废水处理.
主要方法:
- 在EPS中选Candida tropicalis O2以获得高的DON降解效率.
- 批量实验量化了DON从爱水和厌水EPS中去除的量.
- 连续35天运行SBR,比较传统活性污泥 (AS) 与AS-Y.
- 转基因组分析和功能基因注释 (KEGG,CAZy) 以了解微生物社区的转变和代谢活动.
主要成果:
- 在批量测试中,Candida tropicalis O2实现了68.26%的水性DON和59.27%的水性DON去除.
- 与AS-Y反应堆相比,AS-Y反应堆显示出显著的改进:24.75%更高的DON去除,27.13%更高的水友性DON去除和6.48%更高的COD去除,与AS相比.
- 虽然溶解无机 (DIN) 的去除量略有下降,但在AS-Y系统中,总体总 (TN) 的去除量增加了7.13%.
- 甲基因组分析表明,促进了氨基酸和碳水化合物代谢,并在污泥中成功定居了O2菌株.
结论:
- 热带菌O2在EPS中降解DON非常有效,提供了一个有前途的生物治疗方法.
- 在活性污泥中的酵母注射增强了DON的去除和WWTP的总体缩,减轻了轻化风险.
- 该研究提出了一种新的现场方法,用于提高废水处理厂的去除效率.
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