Abstract
This work compares a pilot-scale H2-based membrane biofilm reactor (MBfR) and a pilot-scale packed-bed heterotrophic reactor (PBHR) for denitrification of nitrate-contaminated groundwater. The comparison includes the effluent water quality of the denitrification reactors (NO3 -, NO2-, dissolved oxygen, SO4 2-, (biodegradable) dissolved organic carbon, heterotrophic plate counts (HPC), turbidity, NH4+, and pH), and the impact of post-treatment on water quality. At the same nitrate carrier-surface loading, effluent water quality was generally better directly from the MBfR than from the PBHR. However, post treatment including an ozone-contact tank and a post-filter brought the finished-water quality for both systems to roughly the same level, which met all drinking water standards except for HPC.
Original language | English (US) |
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Pages (from-to) | 227-233 |
Number of pages | 7 |
Journal | Water Science and Technology: Water Supply |
Volume | 12 |
Issue number | 2 |
DOIs | |
State | Published - 2012 |
Keywords
- Autotrophic denitrification
- Heterotrophic denitrification
- Post treatment
- Water quality
ASJC Scopus subject areas
- Water Science and Technology