在不同输入负载效应下的生物保养系统中填充装置的响应机制
Chunbo Jiang1,2, Pingyan Ji1, Hong Chen1
1Department of Municipal and Environmental Engineering, School of Water Resources and Hydro-Electric Engineering, Xi'an University of Technology, Xi'an, 710048China.
Integrated environmental assessment and management
|October 28, 2025
概括
生物保留系统有效地减少了排水污染 (NH4+-N,TP,COD),但可以出酸 (NO3--N) 和总 (TN). 植物生长主要受到碳 (C) 和 (N) 流入度的影响.
科学领域:
- 环境科学 环境科学
- 生态工程生态工程生态工程
- 土壤科学 土壤科学
背景情况:
- 生物保留系统对于管理城市排水污染至关重要.
- 对于这些系统中的污染物去除机制,积累和植物生理反应的理解有限.
- 研究不同污染物负载的影响对于优化生物保持性能至关重要.
研究的目的:
- 量化生物防护系统在不同排放污染负载下减少污染的效率.
- 分析媒介中的污染物积累及其对植物生理学的影响.
- 了解流入污染物度与生物保留系统性能之间的关系.
主要方法:
- 使用土壤,沙子,叶子垃圾堆肥和Ophiopogon japonicus混合物构建的盆级生物保留系统.
- 采用L39直角实验设计来模拟各种排水污染负载.
- 监控的进/出流度,介质特征和植物生理指标 (叶绿素,甲,生物质).
主要成果:
- 生物保持系统实现了对NH4+-N (11.9%71.8%),TP (8.3%43.7%) 和COD (5.1%30.1%) 的显著负载降低率.
- 观察到NO3--N和TN的显著漏,表明潜在的营养损失.
- 污染物负载的减少 (C,N,P) 与输入度正相关 (R2>0.8).
- 在不同负荷下,植物生理参数 (叶绿素,,生物质) 显著变化 (分别为63.4%,77.4%,59.8%),其中C和N度是关键因素.
结论:
- 生物保留系统在去除污染物方面表现出可变的有效性,其中有显著的泄漏.
- 流入污染物度是影响系统性能和植物健康的关键因素.
- 结果为优化生物保留系统设计,管理和风险评估提供了见解.
相关概念视频
Responses to Drought and Flooding
11.9K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
11.9K
Conservation of Mass in Moving, Nondeforming Control Volume
1.3K
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...
1.3K
Underflow Gates
324
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
324
Bioremediation
22.0K
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.
22.0K
Additives and Fillers in Concrete
301
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
The...
301
Design Example: Creating a Hydraulic Model of a Dam Spillway
638
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
638


