BIOLOGICAL TREATMENT OF SECONDARY SEWAGE EFFLUENT FOR RE-USE IN POWER GENERATION PLANT
Abstract:Re-use of municipal secondary effluent has enabled the expansion of a major power plant in the Caribbean, and avoided what might have been a major project constraint, due to the shortage of fresh water. The 1.8 MGD secondary effluent flow is treated in a multi-stage fluidized fixed film biological treatment system and a dissolved gas flotation unit prior to re-use as source water for cooling tower make-up and boiler feed water. The technology selection, process design and aspects of the system installation are discussed. Impacts of fluctuating influent concentrations and differences in the biological regimes in the three sequential stages are addressed.
Document Type: Research Article
Publication date: January 1, 2003
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