Water Conservation by Reclamation and Recharge

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Abstract
Nassau County, N.Y., is planning to reclaim water from effluent of its water-pollution-control plants, and inject this water into aquifers furnishing most of the public water supplies in the county. The injection will create a hydraulic barrier, preventing salt-water intrusion, and will allow increased withdrawals from existing water supply wells. The paper describes the relationship of the Nassau County program to other salt-water barrier and advanced waste treatment projects, and examines water-quality standards for recharging and process selection to meet these standards: demonstration facilities consisting of a 400 gpm renovation plant providing coagulation, filtration, and carbon adsorption, and a water injection plant with redevelopment facilities and observation wells are also described.

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