This report is based on one of a series of investigations sponsored by the Department of Housing and Urban Development to determine the benefits which might be gained from urban energy centers. A review is given of processes used for waste water treatment, emphasizing new processes which appear to have potential for combination with desalting. A survey of developmental application of desalting processes to wastes is given.nCost estimates are given for a number of possible systems using desalting to treat effluent from a city of 1 million population ""The analysis indicates that, although advanced waste treatments may, increase the cost of sewage, processing by factors of up to four times, the overall cost of water supply, sewerage and treatment need not be increased over about 30 per cent.
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