The primary purpose of this study was to find the proper operating parameters for successful operation of the nitrification biotowers at the North Regional Wastewater Treatment Plant in Dayton, Ohio, and to recommend an operational protocol to prevent future failures. This plant is subject to regular, periodic biotower upsets. It was found that these upsets are correlated with blooms of snails (Physa gyrina) which it is believed graze the biofilm and devour the nitrifying organisms. Snail control mechanisms are under investigation.
Research Article|July 01 1997
Nitrifying biotower upsets due to snails and their control
Water Sci Technol (1997) 36 (1): 247-254.
Gudny Palsdottir, Paul L. Bishop; Nitrifying biotower upsets due to snails and their control. Water Sci Technol 1 July 1997; 36 (1): 247–254. doi: https://doi.org/10.2166/wst.1997.0058
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