Download or read book Recycling of Salt contaminated Stormwater Runoff for Brine Production at Virginia Department of Transportation Road salt Storage Facilities written by G. Michael Fitch and published by . This book was released on 2008 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large part of the Virginia Department of Transportation's (VDOT's) maintenance effort comprises the implementation of its snow removal and ice control program. Earlier research confirmed that VDOT captures significant volumes of salt-laden stormwater runoff at its 300+ salt storage facilities throughout the state and that the disposal options for this water are limited and costly. Although VDOT is implementing recommended management options to reduce the quantity of salt water captured, this research was undertaken to determine the possibility of recycling salt-contaminated stormwater runoff for the purpose of producing brine that can be used for pre-wetting of granular NaCl and direct application. Laboratory and field tests were conducted using bench-scale brine generation equipment. In the laboratory phase, brine was produced using tap water while hydraulic retention times and water temperatures were varied to determine how these changes would affect the quantity and quality of brine production. Stormwater runoff from a storage pond without any previous treatment was used in the field phase to allow a better estimate of the potential effects of stormwater on the quality of the brine generated. Results showed that the optimum conditions for brine production were low hydraulic retention time (high flow rates) and high temperatures. The total suspended solids present in the stormwater runoff did not diminish the quality of the brine in the field tests. Based on historic precipitation and chemical application data, VDOT appears to capture sufficient volumes of water to meet the majority of its potential brine production needs. Further, significant economic benefits can be obtained by applying this recycling strategy, with the greatest benefits resulting from generating brine for both direct application and pre-wetting. Assuming average stormwater volume collection and average total NaCl application, VDOT can save approximately $3 million each year by generating brine for pre-wetting only versus approximately $6.5 million each year by generating brine for the combination of pre-wetting and direct application.

Download or read book Sustainable Winter Road Operations written by Xianming Shi and published by John Wiley & Sons. This book was released on 2018-03-27 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first and only comprehensive guide to best practices in winter road operations Winter maintenance operations are essential to ensure the safety, mobility, and productivity of transportation systems, especially in cold-weather climates, and responsible agencies are continually challenged to provide a high level of service in a fiscally and environmentally responsible manner. Sustainable Winter Road Operations bridges the knowledge gaps, providing the first up-to-date, authoritative, single-source overview and guide to best practices in winter road operations that considers the triple bottom line of sustainability. With contributions from experts in the field from around the world, this book takes a holistic approach to the subject. The authors address the many negative impacts on regional economies and the environment of poorly planned and inadequate winter road operations, and they make a strong case for the myriad benefits of environmentally sustainable concepts and practices. Best practice applications of materials, processes, equipment, and associated technologies and how they can improve the effectiveness and efficiency of winter operations, optimize materials usage, and minimize cost, corrosion, and environmental impacts are all covered in depth. Provides the first up-to-date, authoritative and comprehensive overview of best practices in sustainable winter road operations currently in use around the world Covers materials, processes, equipment, and associated technologies for sustainable winter road operations Brings together contributions by an international all-star team of experts with extensive experience in designing, implementing, and managing sustainable winter road operations Designed to bring professionals involved in transportation and highway maintenance and control up to speed with current best practice Sustainable Winter Road Operations is essential reading for maintenance professionals dealing with snow and ice control operations on highways, motorways and local roads. It is a valuable source of information and guidance for decision makers, researchers, and engineers in transportation engineering involved in transportation and highway maintenance. And it is an ideal textbook for advanced-level courses in transportation engineering.

Download or read book Characterization and Environmental Management of Stormwater Runoff from Road salt Storage Facilities written by G. Michael Fitch and published by . This book was released on 2004 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study were to assess the quantity and quality of salt-contaminated water generated from stormwater runoff at VDOT's salt storage facilities and to evaluate management/treatment alternatives to reduce costs and better protect the environment. Data regarding detention pond surface area and volume, runoff area, and several key water quality constituents were collected from five randomly selected storage facilities in each of VDOT's nine districts, for a total of 45 sampling sites. Chloride concentrations were significantly greater than state and federal regulatory guidelines for drinking water and surface water quality criteria, with values routinely exceeding 2000 mg/L. Concentrations of total suspended solids and oil and grease were less than expected, with averages of 20 and 2 mg/L, respectively. The quantity of stormwater collected was higher than anticipated, with approximately 60 MG of contaminated runoff water being generated in an average rainfall year. Even if only the runoff generated during the 5-month winter maintenance season is considered, the volume of salt-contaminated water is in excess of 30 MG. Two alternatives to VDOT's disposal practices were examined: (1) management strategies to reduce the volume of salt-contaminated stormwater runoff generated at each facility, and (2) treatment of the runoff to remove the salt and subsequent release of the runoff back to the environment. Currently, VDOT disposes of the salt water by one of three methods: (1) connecting directly to a publicly owned treatment works system, (2) pumping and transporting the salt water to such a system by tank truck, or (3) applying the salt water to gravel roads to suppress dust temporarily.The average per gallon cost of VDOT's current method of pumping and transporting to a publicly owned treatment works system is approximately $0.13. If VDOT used a mobile ultrafiltration/reverse osmosis system, this cost would be cut by more than half. The $0.047 per gallon cost is also 58 percent of the $0.08 per gallon cost VDOT pays to use the wastewater for dust control. For a statewide annual treatment volume of 58.6 MG, this would result in an annual cost savings of $1.9 million to $4.9 million. It appears that the reverse osmosis treatment technology is worthy of additional exploration to ensure that operation problems and costs do not preclude its use by VDOT.

Download or read book Strategies to Mitigate the Impacts of Chloride Roadway Deicers on the Natural Environment written by Laura Fay and published by . This book was released on 2013 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 449 : Strategies to Mitigate the Impacts of Chloride Roadway Deicers on the Natural Environment documents the range of methods, tools, and techniques used by transportation agencies to minimize the environmental impact of chloride-based roadway deicers"--Publisher's description.

Download or read book U S Geological Survey Water supply Paper written by and published by . This book was released on 1982 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Water Summary written by and published by . This book was released on 1988 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Water Summary 1986 written by and published by . This book was released on 1988 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Appendix to Salt Brine Runoff Control at Truck Stations and Bulk Storage Sites written by Minnesota. Salt Handling Task Force Committee and published by . This book was released on 1989 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Water Summary written by and published by . This book was released on 1986 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sustainable Winter Road Operations written by Xianming Shi and published by John Wiley & Sons. This book was released on 2018-08-27 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first and only comprehensive guide to best practices in winter road operations Winter maintenance operations are essential to ensure the safety, mobility, and productivity of transportation systems, especially in cold-weather climates, and responsible agencies are continually challenged to provide a high level of service in a fiscally and environmentally responsible manner. Sustainable Winter Road Operations bridges the knowledge gaps, providing the first up-to-date, authoritative, single-source overview and guide to best practices in winter road operations that considers the triple bottom line of sustainability. With contributions from experts in the field from around the world, this book takes a holistic approach to the subject. The authors address the many negative impacts on regional economies and the environment of poorly planned and inadequate winter road operations, and they make a strong case for the myriad benefits of environmentally sustainable concepts and practices. Best practice applications of materials, processes, equipment, and associated technologies and how they can improve the effectiveness and efficiency of winter operations, optimize materials usage, and minimize cost, corrosion, and environmental impacts are all covered in depth. Provides the first up-to-date, authoritative and comprehensive overview of best practices in sustainable winter road operations currently in use around the world Covers materials, processes, equipment, and associated technologies for sustainable winter road operations Brings together contributions by an international all-star team of experts with extensive experience in designing, implementing, and managing sustainable winter road operations Designed to bring professionals involved in transportation and highway maintenance and control up to speed with current best practice Sustainable Winter Road Operations is essential reading for maintenance professionals dealing with snow and ice control operations on highways, motorways and local roads. It is a valuable source of information and guidance for decision makers, researchers, and engineers in transportation engineering involved in transportation and highway maintenance. And it is an ideal textbook for advanced-level courses in transportation engineering.

Download or read book Freeze Separation for Recycling Road Salt Contaminated Melt Water written by Christina Gloria Tatarniuk and published by . This book was released on 2008 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highway Deicing written by and published by Transportation Research Board. This book was released on 1991 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines the total cost of salt and calcium magnesium acetate (CMA), including the indirect cost of application and indirect costs to the environment, infrastructure, and motor vehicles. This report focuses on defining the true cost of salt, which is the most popular deicer and the standard of comparison for most other deicing products.

Download or read book The Material Flow of Salt written by Dennis S. Kostick and published by . This book was released on 1993 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Snow and Ice Control written by Robert R. Blackburn and published by Transportation Research Board. This book was released on 2004 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Water Summary written by and published by . This book was released on 1993 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Salt Management Guide written by and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "With over one million kilometres of road, Canada's extensive network provides a safe, efficient and affordable means of surface transportation and supports a wealth of economic and social activities. many individuals rely on the Canadian road network for transport to the workplace and a wide array of economic uses, for recreation and leisure activities, and for emergency and security services. The de-icer of choice continues to be salt. Since TAC's Salt Management Guide was published in 1999, advancements have been made in the field of salt management. In order to keep the Guide current, an update of the documents was deemed necessary to incorporate the research and lessons learned in the past ten years. This Guide and the Syntheses of Best Practices continue to identify and described [sic] ways of handling and using salt to maintain its usefulness within winter maintenance while reducing its adverse effects to the environment."--Abstract.

Download or read book The report to Congress written by United States. Office of Solid Waste Management Programs and published by . This book was released on 1977 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: