Pollution Engineering - October 2008 - (Page 27)

“ In villages where wellhead units have been installed, the incidence of arsenic poisoning has dropped dramatically. People are reporting living healthier and more productive lives. gravel. Every eight to 12 months the filter media is regenerated and the waste safely contained. One wellhead unit can serve up to 300 families and is expected to last for 10 to 15 years with little maintenance required. The filter is locally manufactured, easy to operate (no electricity required), easy to maintain, and relatively inexpensive – approximately $2,000 for each wellhead unit. Most importantly, the technology is sustainable, offering effective protection for years to come. Working with the local villages, water committees were formed to help implement the installations and encourage ongoing local input and control. To date, the organization has helped finance the installation of 130 of these units providing safe, arsenic-free water for more than 40,000 people in multiple villages across West Bengal. ” The lesions on this man’s hands indicate long-term exposure to arsenic. The arsenic has affected his nervous system as well; his wife had to help him open his hands, which have atrophied. FILTRATION TRENDS New Filtration Technology Keeps Cooling Tower Water Clean Typical Full Flow filtration using existing pump. ORIVAL Cooling Tower ORIVAL Cooling Tower Typical Side Stream filtration of basin using a recirculating pump. Typical Side Stream filtration using existing pump. Typical Side Stream filtration using a booster pump. O RI VA L Cooling Tower Cooling Tower E www.orival.com • filters@orival.com specific gravity, even lighter than water. Typical examples include: airborne particles, microbiological growth, bugs, sand, scale, algae, rust, etc. Line pressure powered, they permit use of the existing cooling tower pump, lowering initial system cost. The fully automatic self cleaning cycle takes seconds and does not interrupt flow. Reclaim units recirculate rinse water making filtration a zero discharge operation. For more information and system design assistance, contact: Orival, Automatic SelfCleaning Filters, 40 N. Van Brunt St., Englewood, NJ 07631. (201) 568-3311, (800) 567-9767, Fax: (201) 568-1916. very cooling tower has its unique dirt conditions, space constraints and other special characteristics. Filtration systems must take these into account in order to maintain particle free water. Orival filters are versatile enough to meet these criteria. They remove a wide range of dirt down to micron size, of any See us in WEFTEC Booth #27171 OCTOBER2008 www.pollutionengineering.com 27 O RI VA L http://www.orival.com http://www.pollutionengineering.com

Table of Contents Feed for the Digital Edition of Pollution Engineering - October 2008

Pollution Engineering - October 2008 Contents The Editor’s Desk EnviroNews PE Events Legal Lookout Green Connections Clearing the Air Water for People There’s a New Show in Town Catching Wind for Clean Water Taking the Pressure off Blower Selection Pulsed Plasma Positive Redundancy Product Focus: Municipal Water Treatment Product Focus: Monitoring Equipment PE Products Classified Marketplace Advertisers Index State Rules

Pollution Engineering - October 2008

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