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Biological Treatment Simultaneously Addresses Multiple Contaminants: Ammonia, Arsenic, Iron and Manganese
Citation:
Lytle, D., D. Williams, C. Muhlen, M. Pham, E. Riddick, AND A. Keithley. Biological Treatment Simultaneously Addresses Multiple Contaminants: Ammonia, Arsenic, Iron and Manganese. AWWA International Symposium on Biological Treatment, Atlanta, Georgia, February 12 - 13, 2020.
Impact/Purpose:
The objective of this project was to evaluate an innovative biological treatment approach to simultaneously remove four drinking-water contaminants: ammonia, arsenic, iron, and manganese. A pilot system was operated for 1 year at a small groundwater system in Iowa, and water quality samples were collected and analyzed routinely. The biological treatment system effectively removed all four contaminants, with finished water concentrations of <0.2 mg/L ammonia-nitrogen, <0.1 mg/L iron, <0.01 mg/L manganese, and <0.01 mg/L arsenic. This treatment system can be a cost-effective and straightforward process for treating these contaminants. Program and regional partners, engineering firms, and drinking water utilities can apply these results.
Description:
The objective of this project was to evaluate an innovative biological treatment approach to simultaneously remove four drinking-water contaminants: ammonia, arsenic, iron, and manganese. A pilot system was operated for 1 year at a small groundwater system in Iowa, and water quality samples were collected and analyzed routinely. The biological treatment system effectively removed all four contaminants, with finished water concentrations of <0.2 mg/L ammonia-nitrogen, <0.1 mg/L iron, <0.01 mg/L manganese, and <0.01 mg/L arsenic. This treatment system can be a cost-effective and straightforward process for treating these contaminants. Program and regional partners, engineering firms, and drinking water utilities can apply these results.