INFLUENCE OF FLOW RATE AND MEDIA GRADATION ON THE COST-EFFECTIVE DESIGN OF STORMWATER FILTRATION BEST MANAGEMENT PRACTICES FOR THE REMOVAL OF TOTAL SUSPENDED SOLIDS

2003 ◽  
Vol 2003 (12) ◽  
pp. 757-764
Author(s):  
Scott A. de Ridder ◽  
Paula P. Calvert ◽  
James H. Lenhart
2014 ◽  
Vol 46 (4) ◽  
pp. 509-526 ◽  
Author(s):  
Craig M. Smith ◽  
Jeffrey R. Williams ◽  
Amirpouyan Nejadhashemi ◽  
Sean A. Woznicki ◽  
John C. Leatherman

Erosion of agricultural croplands is a significant contributor of sedimentation to reservoirs. Here, physiographic and economic models for a large agricultural watershed (2377 square miles with 27 subwatersheds) are integrated for the reduction of sedimentation of one Midwestern reservoir. Sediment reduction and the cost-effectiveness of three agricultural best management practices (no-till, filter strip, and permanent vegetation) implementation were considered under three modeling scenarios: random assignment; the globally most cost-effective approach; and a cost-effective targeting approach. This study demonstrates how physiographic and economic data can be harnessed to yield readily comprehendible cost-effective targeting maps. Cost-effective targeting may be preferable to watershed managers for its “user-friendliness” without too great a sacrifice of the globally most cost-efficient solution.


Water ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 235 ◽  
Author(s):  
Zuoda Qi ◽  
Gelin Kang ◽  
Xiaojin Wu ◽  
Yuting Sun ◽  
Yuqiu Wang

Best management practices (BMPs) are an effective way to control water pollution. However, identification of the optimal distribution and cost-effect of BMPs provides a great challenge for watershed policy makers. In this paper, a semi-distributed, low-data, and robust watershed model, the Revised Generalized Watershed Loading Function (RGWLF), is improved by adding the pollutant attenuation process in the river channel and a bank filter strips reduction function. Three types of pollution control measures—point source wastewater treatment, bank filter strips, and converting farmland to forest—are considered, and the cost of each measure is determined. Furthermore, the RGWLF watershed model is coupled with a widely recognized multi-objective optimization algorithm, the non-dominated sorting genetic algorithm II (NSGAII), the combination of which is applied in the Luanhe watershed to search for spatial BMPs for dissolved nitrogen (DisN). Fifty scenarios were finally selected from numerous possibilities and the results indicate that, at a minimum cost of 9.09 × 107 yuan, the DisN load is 3.1 × 107 kg and, at a maximum cost of 1.77 × 108 yuan, the total dissolved nitrogen load is 1.31 × 107 kg; with the no-measures scenario, the DisN load is 4.05 × 107 kg. This BMP optimization model system could assist decision-makers in determining a scientifically comprehensive plan to realize cost-effective goals for the watershed.


Shore & Beach ◽  
2020 ◽  
pp. 75-83
Author(s):  
Nicole Elko ◽  
Kimberley McKenna ◽  
Tiffany Roberts Briggs ◽  
Nicholas Brown ◽  
Michael Walther ◽  
...  

Coastal inlets separate individual barrier islands or barrier spits and adjacent headlands (Hayes and Fitzgerald 2013). Inlets modify longshore transport and store sediment in flood and ebb shoals leading to dynamic adjacent shorelines. For example, 80% to 85% of the beach erosion in Florida can be attributed to inlets (Dean 1991). In some cases, structured inlets are designed to trap sand in a preferred location to minimize interference with navigation and facilitate its removal through dredging. Sound coastal engineering practice requires that this sand be placed on adjacent eroding beaches (NRC 1995) to protect coastal resources. This paper provides a brief overview of coastal inlet management and identifies Best Management Practices (BMPs) intended to balance human needs for inlet navigation with the natural systems adjacent to tidal inlets. Today’s conservation measures, which are a result of considerable monitoring, numerical modeling, and other science-based methods, demonstrate that BMPs improve management of sand resources and reduce impacts associated with tidal inlet dredging. For some inlet conditions, BMPs include use of inlet sediment sinks as cost-effective and eco-friendly sand sources for beach nourishment projects located close to the inlet. For optimal coastal inlet management, the ASBPA Science and Technology Committee recommends the following BMPs and conservation measures: • Limit frequency and duration of impacts, • Follow environmental windows, • Implement regional sediment management, • Use beach-compatible sand, • Conduct pre-, during-, and post-dredging monitoring, • Modify dredging equipment/practices, and • Design rechargeable, low-impact inlet borrow sites.


2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Qin Lu ◽  
Zhenli L. He ◽  
Peter J. Stoffella

Land application of biosolids has proven a cost-effective method of waste disposal by beneficially recycling organic matter and nutrients and improving soil quality; however, it may also pose potential threat to the environment and human health. The purpose of this paper is to provide information on recent research progresses and regulation efforts regarding land application of biosolids, including forms and types and nutrient values of biosolids, environmental and health concerns, and related best management practices (BMPs) of biosolids application, with emphasis on its land application in agriculture. More research and regulations are expected to minimize potential risks of biosolids land application, especially its long-term impacts.


2004 ◽  
Vol 39 (4) ◽  
pp. 392-405 ◽  
Author(s):  
Daniel D. Olding ◽  
Tracey S. Steele ◽  
John C. Nemeth

Abstract Untreated stormwater discharge has been found to have major impacts on urban watercourses. Despite the acknowledgement of the importance of adopting broader-scale approaches to managing stormwater, there is limited information describing the subwatershed benefits of implementing numerous best management practices (BMPs). Operational monitoring of stormwater management facilities (SWMFs) and streams in three subwatersheds undergoing urbanization was undertaken over a five-year period to measure potential changes in suspended solids concentrations, hydrology and temperature. SWMFs at construction sites had elevated total suspended solids (TSS) discharges relative to facilities in stable catchments, but reduced TSS discharges in comparison to uncontrolled construction sites. The discharge from single facilities was found to have the potential to increase downstream watercourse TSS concentrations in headwater areas, but increases were often not detectable further downstream. TSS discharges from SWMFs in stable catchments were similar to published ranges, and were a useful tool to identify facilities that were not functioning as designed. Based upon the current subwatershed imperviousness levels, water quality impacts from cumulative SWMF discharges appear to be less likely to be significant than some other factors, such as the changes in the subwatershed hydrological response. No increase in peakflow or duration of midbankfull flow for the 25-mm and 2-year storm event and no trend in baseflow or water temperature were detectable over the study period, despite the increase in imperviousness due to watershed urbanization. The findings from this operational monitoring study suggest that implementation of BMPs may help to mitigate urban impacts at the subwatershed level.


1992 ◽  
Vol 16 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Peter Lickwar ◽  
Clifford Hickman ◽  
Frederick W. Cubbage

Abstract Data on harvest volumes, topography, and other site and area characteristics were obtained from 22 timber harvests in Alabama, Florida, and Georgia. An economic analysis was then used to estimate the marginal costs of implementing each state's recommended Best Management Practices (BMPs), as well as a set of enhanced BMPs on these sites. Considering all of the areas combined, the costs of using the recommended BMPs averaged 2.9% of gross timber sale revenue, $2.34 per thousand board feet (mbf) of timber harvested, or $12.45/ac. The cost of implementing the enhanced BMPs averaged 5.1% of gross stumpage value, $4.13/mbf, or $21.94/ac. Seed, fertilizer, and mulch, broad based dips, and water bars were the most expensive practices on a total cost basis. Culvert installation, streamside management zones, and road relocation costs were less expensive for most tracts. South. J. Appl. For. 16(1):13-20.


Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 985
Author(s):  
Ruimin Liu ◽  
Yuexi Miao ◽  
Qingrui Wang ◽  
Lijun Jiao ◽  
Yifan Wang ◽  
...  

A questionnaire survey was conducted among farmers in the Xiangxi River Basin to investigate the local livestock situation and the farmers’ understanding of and attitude towards pollution. The results showed that local farmers lacked environmental awareness and few livestock and poultry pollution treatment measures had been implemented. However, once farmers understood that livestock pollution would greatly influence their lives and interests, they would act to prevent Agricultural non–point source (ANPS) pollution. The farmers’ education level and satisfaction with the environment were the main factors affecting their awareness regarding ANPS pollution. The “Comprehensive Environmental Optimization Tool SWAT–APEX Interface” model (SWAPP) was used to simulate the reduction of ANPS by different best management practices (BMPs) and the construction cost was calculated. The results showed that compound bedding and piping systems and ponds were the most effective and economic measures for reducing ANPS pollution. Spatially, implementing BMPs in the upstream region was better for improving water quality. The nitrate reduction rate in upstream sub–basins reached 90%, which is 30% larger than that in downstream sub–basins with combined bedding and piping systems. Combining the farmers’ awareness of and engagement in livestock pollution with cost–effective BMPs can improve the BMPs’ effectivity and efficiency.


2019 ◽  
Vol 97 (Supplement_1) ◽  
pp. 4-4
Author(s):  
Robert S Wells ◽  
Jason Bradley

Abstract The Noble Research Institute Integrity Beef Alliance (IBEEF) program which, emphasizes cow/calf best management practices and marketing has been in existence since 2000. From 2009 through 2017, weaning weight has averaged 268.5 kg, 28.6 kg heavier than the 2008 NAHMS data. Sale weights of spring born calves after a minimum 60 d preconditioning phase averaged 703 lbs. During the preconditioning phase, the cost of gain has averaged $0.34/kg and the value of gain has averaged $0.72/kg. Average preconditioning profit has been $0.38/kg. Total cost of preconditioning calves for at least 60 d for program participants has averaged $122.20/hd and total average profit has been $123.50/ hd. Calves have averaged 1.01 kg/d gain during the preconditioning phase. This value-added calf program has demonstrated an average of 5.77% and 4.80% increase in market value for steers and heifers over all other cattle marketed on the same day at the same sale venue (OKC West Livestock Market, El Reno, OK), respectively, since 2012. Relative to non-certified cattle, IBEEF cattle demonstrated an average of 5.76% and 6.27% increase in market value for steers and heifers, respectively. Membership has grown from 1139 hd with 11 members to 7521 head of calves enrolled by 51 member ranches.


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