Related Experiment Video
Updated: Jul 31, 2026
11:53
Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
Published on: December 9, 2012
Modelling non-structural best management practices--focus on reductions in stormwater pollution
1Water Environment Transport, Chalmers University of Technology, SE-412 96 Göteborg, Sweden. stefan.ahlman@chalmers.se
Summary
Non-structural best management practices (BMPs) for stormwater management showed significant reductions in copper (77%) and PAH (50%) but did not meet environmental goals. Additional structural measures are needed for sufficient pollution reduction.
Area of Science:
- Environmental Engineering
- Urban Hydrology
- Water Quality Management
Background:
- Stormwater runoff in urban areas is a major source of pollution.
- Non-structural Best Management Practices (BMPs) are increasingly considered for pollution control.
- Evaluating the effectiveness of these practices is crucial for water quality improvement.
Purpose of the Study:
- To model and evaluate the efficiency of non-structural BMPs for stormwater management.
- To assess the impact of source reduction practices on urban catchment pollution.
- To determine if current non-structural BMPs can meet environmental quality criteria.
Main Methods:
- Utilized the substance flow model SEWSYS for simulation.
- Modeled an urban catchment in Göteborg, Sweden.
- Simulated a hypothetical control program including prevention, education, and regulations.
Main Results:
- Achieved 77% reduction in copper and 50% reduction in Polycyclic Aromatic Hydrocarbons (PAH).
- Copper reduction attributed to less roof corrosion and brake wear.
- PAH reduction primarily linked to reduced road wear.
Conclusions:
- Non-structural BMPs alone were insufficient to meet desired environmental quality criteria.
- A combination of non-structural and structural measures is recommended for effective pollution reduction.
- Further implementation of integrated BMP strategies is necessary for improved stormwater quality.
Related Concept Videos
00:46Bioremediation
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.
01:14Conservation of Mass in Moving, Nondeforming Control Volume
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...
01:30Typical Model Studies
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
01:30Environmental Applications of Microorganisms
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...
01:30Microbial Wastewater Treatment
Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.