Salinization alters ecosystem structure in urban stormwater detention ponds

2011 ◽  
Vol 14 (4) ◽  
pp. 723-736 ◽  
Author(s):  
Robin J. Van Meter ◽  
Christopher M. Swan ◽  
Joel W. Snodgrass
2011 ◽  
Vol 64 (4) ◽  
pp. 818-825 ◽  
Author(s):  
Darja Istenič ◽  
Carlos A. Arias ◽  
Víctor Matamoros ◽  
Jess Vollertsen ◽  
Hans Brix

The concentrations of polycyclic aromatic hydrocarbons (PAHs) in water and sediments of seven wet detention ponds receiving urban stormwater were investigated. The ponds comprised traditional wet detention ponds with a permanent wet volume and a storage volume as well as ponds that were expanded with sand filters and other means to improve the removal of micropollutants. The concentrations of ∑PAH in the sediments varied between 6 ± 5 and 2,222 ± 603 ng g−1 dry weight (mean ± standard deviation), and were highest in the ponds with lower pond volume per catchment area and did not clearly reflect different activities in the catchments. In general, the concentrations of PAHs in the sediments decreased from inlet to outlet, especially in the systems with good conditions for sedimentation such as systems with flow perpendicular sand dikes and extensive submerged vegetation. High molecular weight PAHs were predominant in the sediments indicating the pyrogenic origin of the PAHs. There was no correlation between PAH species concentrations in water or sediments and their hydrophobicity (log Kow). PAH concentrations in water fluctuated in response to intensity and frequency of rain events, whereas concentrations in the sediments integrated the pollutant load over time. Pond systems expanded with sand filters and other technologies to enhance removal of micropollutants consistently had concentrations of PAHs in the effluents below the detection level.


2012 ◽  
Vol 47 (10) ◽  
pp. 1466-1477 ◽  
Author(s):  
Darja Istenič ◽  
Carlos A. Arias ◽  
Jes Vollertsen ◽  
Asbjørn H. Nielsen ◽  
Tove Wium-Andersen ◽  
...  

2008 ◽  
Vol 35 (5) ◽  
pp. 487-499 ◽  
Author(s):  
Yiping Guo ◽  
Zhengji Zhuge

The main purpose of flood routing calculations conducted in urban stormwater management studies is to determine the flood frequency distribution at a downstream location knowing the upstream catchments, channel reaches, and detention ponds. As the current state of practice, the design storm approach is widely used for this purpose and for the planning and design of related stormwater management facilities. Building upon previous work, methods and procedures are proposed here so that flood routing for stormwater management purposes can be completed probabilistically using analytical equations. Results from the proposed methods and procedures are compared with design storm modeling results for a number of routing scenarios. The comparison study not only establishes the credibility of the proposed methodology, but also highlights potential problems associated with the application of the design storm approach.


2020 ◽  
Author(s):  
Anaí Floriano Vasconcelos ◽  
Ademir Paceli Barbassa

Sustainable urban stormwater management (SUSM) is essential to urban sustainability. However, barriers to adopting it are observed even in places where SUSM is more widespread. Recent studies have evaluated strategies for overcoming some types of barriers. However, any study has systematically analyzed the strategies available for overcoming the most common barriers, contributing to widely adopting SUSM. Thus, this article aimed to provide a literature review on these strategies. Sixty-six documents were evaluated, resulting in eight solution strategies, detailed by 81 implementation measures, which were critically analyzed. The interrelationships among the solution strategies and their applicability to overcome the SUSM-related barriers were evaluated. This analysis showed that the solution strategies are interdependent, so it would be inefficient to adopt the strategies in isolation. On the other hand, adopting a strategy can help overcome several barriers, also enhancing other strategies, and consequently contributing to the global scenario of effective SUSM adoption. The availability of this systematized information helps break through common barriers and optimizing efforts to adopt SUSM where it is incipient.


1995 ◽  
Vol 32 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Y. Azzout ◽  
S. Barraud ◽  
F. N. Cres ◽  
E. Alfakih

The choice of alternative techniques in urban stormwater drainage (infiltration and detention systems), in the course of a project, is most often made with a poor understanding of site constraints, and the possibilities afforded by these techniques. This gives rise to extra costs and also subsequent malfunctioning. To arrive at feasible choices, we have formalised the decision-making process, taking account of the multiple criteria and the large number of partners involved. At present, we are developing a decision-making tool for alternative techniques in urban stormwater management at the preliminary study stage. The first phase makes it possible to eliminate solutions which are unworkable (elimination phase). It is aimed at the designer. Work on the next phase (the decision-making phase), which is more complex, is in progress. It will make it possible, in collaboration with all the partners involved, to choose a stormwater drainage strategy which will best suit the objectives and the wishes of the partners. It uses multi-criteria methods.


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