活性泥与透混凝土微生态系统相结合,用于排水雨水收集和污染物净化
Yongsheng Zhang1, Xuechen Jia1, Pengfei Yuan1
1School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China.
Toxics
|January 8, 2025
概括
这项研究表明,利用废物活性污泥和透水混凝土的微生态系统可以有效地净化城市排水雨水. 与河床污泥相比,废物活性污泥生态系统实现了更好的化学氧气需求和氨的去除.
科学领域:
- 环境工程 环境工程
- 微生物学 微生物学
- 材料科学 材料科学 材料科学
背景情况:
- 城市排水雨水是污染的重要来源.
- 透水混凝土为雨水管理提供了潜力,但需要加强污染物清除.
- 废物活性污泥 (WAS) 和河床污泥 (RBS) 含有能够降解污染物的多种微生物群落.
研究的目的:
- 调查用WAS和透水混凝土建造的微生态系统的有效性,用于城市排水雨水净化.
- 为了比较废物活性污泥生态系统 (WASE) 和河床污泥生态系统 (RBSE) 的污染物清除性能.
- 分析微生物群落结构及其与污染物清除效率的相关性.
主要方法:
- 使用WAS和RBS作为透混凝土的注射剂构建微生态系统.
- 优化液压保留时间 (HRT).
- 化学氧气需求 (COD) 和氨 (NH4+-N) 清除效率的评估.
- 使用微生物基因的遗传代谢进行微生物社区分析.
主要成果:
- 确定最佳液压保留时间 (HRT) 为9小时.
- WASE实现了62.67%的COD和71.21%的NH4+-N去除,超过了RBSE (46.05%的COD,66.55%的NH4+-N).
- 微生物分析揭示了多样化的种群,其中Firmicutes和Actinobacteriota在有机物降解方面占主导地位;Trichococcus主导了WASE.
结论:
- WASE是一种高效的城市排水处理系统,能够处理接近暴雨水平的降雨事件.
- 使用WAS和透混凝土的微生态系统为排放污染物处理提供了一种新且高效的方法,与使用吸附材料的系统相美.
- 这种方法为城市雨水管理和污染控制提供了可持续的解决方案.
相关概念视频
Bioremediation
18.2K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
18.2K
Environmental Applications of Microorganisms
1
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
1
Design Example: Sustainability in Concrete Building
155
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
155
Conservation of Mass in Moving, Nondeforming Control Volume
757
Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
757
Waterproofing and Anti-Bacterial Admixtures in Concrete
74
Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
Waterproofing admixtures render concrete hydrophobic,...
74


