AMMONIA MUNICIPAL WASTEWATER RESOURCE RECOVERY WASTEWATER ZEOLITE

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Abstract

There is a growing belief that in the future the objective should be to treat wastewater not as a waste but as a resource. With this objective in mind, a new municipal wastewater treatment flow sheet was developed (1, 2) which achieves energy sustainability, and water and nutrient recovery. This “new flow sheet” uses an aerobic membrane bioreactor (MBR) operated at a low (i.e., 1 to 2 days) solids retention time (SRT) to accumulate a large fraction (i.e., 75% to 80% or more) of the organics in the wastewater through various mechanisms (e.g., high biomass net yield, storage/absorption and adsorption, and membrane retention). The retained organics are transferred through solids wasting to a high performance anaerobic digestion system to achieve energy generation in the form of methane.

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