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Clean Water Products (CWP) 2808 SP Seawater Nano/RO unitThe Clean Water Products (CWP) 2808 SP Seawater Nano/Return Osmosis (RO) unit processes 144,000 gallons of seawater and returns 60,000 gallons of good quality drinking water in a 24-hour period. The CWP 2808 SP, which can be placed adjacent to an ocean or salt water sea anywhere in the world, was invented by civil engineer and hydrologist, C. Brent Cluff, PhD. Dr. Cluff spent 32 years as a research engineer at the University of Arizona in Tucson before starting Clean Water Products. In a 24 hour period, the skid draws in 144,000 gallons of seawater, which is prefiltered using a slowsand filter. The first nanofiltration stage operates at 160 PSI and employs 4 (ea) housings containing a total of sixteen (16) 8" by 40" nanofilter membranes. This stage produces 100,000 gallons of nano-product water that goes to the second RO stage. The other 44,000 gallons are returned to the sea. During the RO stage, the water is pressurized up to 800 PSI and pushed through 3 housings containing 12 (ea) 8" x 40" special salt water RO membranes. This stage produces 60,000 gallons per day may be used for high-value agriculture, homes, or hotels and resorts. It also creates 40,000 gallons of reject water which contains magnesium hydroxide and purified sodium chloride. By selling the minerals recovered from the reject water (approximately $50 worth of magnesium and purified sodium chloride for every 1,000 of product water created), the CWP 2808 SP quickly pays for itself. Each 60,000 GDP skid has a potential gross annual return from the mineral recovery is $1-2 million per year. The high-dollar amount of mineral recovery is made possible because no chemicals are used in operating the patented system. The magnesium hydroxide is converted to saleable magnesium chloride by by adding hydrochloric acid, a well known precipation process. The purified NaCl is recovered using solar evaporation in shallow ponds. The system runs on 440 volt 3-phase electricty and employs a 20-hp pump for the first (Nano) stage and a 40-hp multi-stage pump for the 800-psi second stage. The system is equipped with a hydrocharger to utilize the waste energy in the RO reject system. This feature reduces energy use by 30%. The cost of water produced by this system, assuming an electricty cost of 10 cents (US) per kilowatt hour, is about $3 per 1,000 gallons. This cost is less than the cost of domestic water charged in most American cities. The system requires a 1,000 square-foot slowsand filter, using masonry sand to pre-treat the seawater prior to its movement through the unit. The cost to build this filter in the USA would be $20,000-$30,000. We are happy to respond to enquiries from customers anywhere in the world. |
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Clean Water Products |
Satellite Office |
