Mar 23, 2016

Pilot-Scale Evaluation of Anita Mox for Centrate Nitrogen Removal at the Joint Water Pollution Control Plant

Veolia

The Sanitation Districts of Los Angeles County, Calif., evaluated two variants of Kruger/Veolia’s Anita Mox process for removing centrate nitrogen at the Joint Water Pollution Control Plant in Carson. One variant was based on the moving bed biofilm reactor (MBBR) technology, while the other was based on the integrated fixed-film activated sludge (IFAS) technology. Two different centrate streams (“Pre-DAF” and “Post-DAF”) were tested as feed to the MBBR pilot; one (“Pre-DAF”) was tested with the IFAS pilot. Due to dilution by other process water, both centrate streams contained lower concentration of NH4 than typical centrate. Median feed NH4 concentrations during this study were 634 mgN/L (Pre-DAF) and 469 mgN/L (Post-DAF).

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Kruger (Veolia Water Technologies)

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