对连续流动部分化颗粒污泥系统的洞察:长期性能,形成机制和部分化颗粒污泥/Anammox配套系统用于成熟的填埋场液处理
Zhizhan Luo1, Bohan Chen1, Mengen Lei1
1School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
Bioresource technology
|September 19, 2024
概括
这项研究开发了一种新的系统,用于处理垃圾填埋场液,使用部分化颗粒污泥 (PNGS) 和Anammox. 该系统有效地去除了有机物和,信号分子影响了污泥颗粒化.
科学领域:
- 环境工程 环境工程
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 成熟的垃圾填埋污水 (MLL) 由于含有大量氨和耐火有机物而带来了重大处理挑战.
- 传统的废水处理方法往往难以有效地从MLL中去除和化学氧气需求 (COD).
- 颗粒式污泥系统为提高废水处理效率和稳定性提供了潜力.
研究的目的:
- 为了研究连续流动部分化颗粒污泥 (PNGS) 结合Anammox系统用于MLL处理的有效性.
- 阐明信号分子 (AHLs和c-di-GMP) 和细胞外聚合物质 (EPS) 在PNGS形成和MLL治疗中的作用.
- 为了评估PNGS/Anammox系统同时去除COD和总无机 (TIN).
主要方法:
- 一个连续流动PNGS/Anammox系统的建造和运行.
- 监测流入和排放的参数,包括NH4+-N,NO2--N,COD和TIN.
- 在颗粒化过程中对乙烯类同类素乳 (AHLs),循环二元型瓜诺辛单 (c-di-GMP) 和细胞外聚合物质 (EPS) 的分析.
- 在PNGS特性和EPS含量之间的相关性分析.
主要成果:
- 稳定的NO2 - - N积累 (98-100%NTR) 在PNGS阶段与高影响的NH4 + - N度实现.
- 在MLL处理过程中观察到AHL,c-di-GMP和EPS的显著增加,通过吸附耐火有机物和嵌入SiO2,促进了污泥颗粒化.
- PNGS直径和EPS含量之间的正相关性表明了AHLs和c-di-GMP在颗粒化中的监管作用.
- 在不同的MLL负载下,PNGS/Anammox系统实现了同时去除COD (28-71%) 和TIN (66-89%).
结论:
- 该PNGS/Anammox系统是有效的同时处理COD和在成熟的垃圾填埋场液.
- AHLs和c-di-GMP在调节EPS分泌中起着至关重要的作用,从而影响PNGS的形成和演变.
- 这些发现为先进的废水处理应用提供了对微生物通信和颗粒化机制的见解.
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