The Sweetwater Authority, which serves 160000 people in southern San Diego County, has adopted a long-range goal to be less dependent on imported supplies, especially in water-short years. The Authority is actively developing a program of brackish groundwater and urban runoff demineralization. Various options have been evaluated for disposal or reuse of the concentrate from the proposed desalination plant. These include: 1) discha rge to San Diego Bay, 2) reuse in coastal wetlands, 3) discharge to existing or proposed sewer networks, and 4) discharge through deep well injection. Disc harge to San Diego Bay may have regulatory constraints which would be imposed by the San Diego Regional Water Quality Control Board (RWQCB). A unique opportunity excists to utilize concentrate for beneficial uses for wetland habitat development such as brackish water wetlands within the Sweetwater Marsh National Wildlife Refuge (NMR). The NWR has expressed an water wetlands within the Sweetwater Marsh National Wildlife Refuge (NWR). The NWR has expressed an interest in utilizing the concentrate as a continous water supply. Concentrate disposal into the City of San Diego sewer system could only occur through conveyance lines which will not convey sewage to proposed reclamation facilities. Injection of concentrate into the San Diego Formation could have a beneficial effect to the quality of the groundwater in the San Diego formation if it occurs close to the coast but may have an adverse impact on inland groundwater.
Desalting residuals: A problem or a beneficial resource?
Entsalzungsrückstände: Problem oder Rohstoffquelle
Desalination ; 102 , 1-3 ; 107-117
1995
11 Seiten, 2 Bilder, 8 Tabellen
Article (Journal)
English
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