Scrap Tyres for Filtering Waste water
Every year, countries around the world produces millions of scrap tires that clog landfills and become breeding areas for pests. Finding adequate uses for castoff tires is a continuing challenge and illegal dumping has become a serious problem for many countries. A Researcher at Pennsylvania State University, USA has developed a method that uses crumb rubber to filter wastewater, which can help ease the tire problem and clean up the environment at the same time. Crumb rubber is produced by chopping up and grinding up waste tires to a desired size, cleaning the rubber and removing any metal particles. It is currently being used in highway pavement, athletic track surfaces, playgrounds, landfill liners, compost bulking agents, various manufactured products, energy recovery and even as artificial reefs for aquatic life. For traditional wastewater filtration, gravity downflow granular filters using sand or anthracite as a medium are commonly used. One major problem with these filters is that upon backwashing the particles, the larger ones settle at a greater rate than the smaller. This causes the top of the filter bed to hold the smallest medium particles and the bottom to hold the largest with the small medium particles or top layer of the filter tending to become clogged quickly. Through the crumb rubber method, the larger solids are removed at the top layer of the filter and the smaller solids at a lower level, greatly minimizing the clogging problem. crumb rubber filter is much more cost effective than conventional sand or anthracite filters. Because of substantially higher water filtration rates and lighter weight in comparison to sand or anthracite, crumb rubber filters may also be used in a mobile treatment unit for disaster relief operations. For further information, contact Dr. Yuefeng Xie Associate Professor of Environmental Engineering Co-Director of Small Public Water Systems Technology Assistance Center T177 Science and Technology Building Harrisburg Tel: (717) 948-6415 Fax: (717) 948-6580 E-mail: yxie@psu.edu
Sector: Rubber
Country: India
Area of Application: Distaster Management, Environmental protection
Keywords: Scrumb rubber, flitration
Advantages: 1. The crumb rubber filter is much more cost effective than conventional sand or anthracite filters 2. Because of substantially higher water filtration rates and lighter weight in comparison to sand or anthracite, crumb rubber filters could be used in a mobile treatment unit for disaster relief operations
Environmental aspects: Waste utilization
Development Status: Laboratory Model
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Transfer Terms: Consultancy , Technology Licensing
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Contact Person: APCTT (UNESCAP)
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Country: India
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