Abstract
The characteristics of nutrient removal from synthetic wastewater were examined in two 2-litre laboratory-scale anaerobic/aerobic alternating sequencing batch reactors (SBRs) fed with different organic substrates. One SBR (SBRA) was fed with acetate as the organic substrate and the other SBR (SBRAY) was fed with acetate and yeast extract. In addition, effects of pH on nitrification and phosphorus removal were also examined in batch experiments. Two different types of carbon metabolism occurred in the two reactors: in SBRA, the soluble chemical oxygen demand (COD) was mainly removed in the aerobic phase and no enhanced biological phosphorus removal (EBPR) was obtained; but in SBRAY, the soluble COD was mainly removed in the anaerobic phase and EBPR was achieved. Despite that EBPR was not achieved in SBRA, phosphorus removal through chemical precipitation was observed, and this was affected by pH, with a low pH causing dissolution of phosphate precipitate. Significant nitrite accumulation was found in SBRA, and 71% of total oxidized nitrogen was nitrite. pH values of wastewater affected the nitrification dynamics with a high specific nitrification rate at pH 8.0 and a high nitrite accumulation at pH 7.0.
| Original language | English |
|---|---|
| Pages (from-to) | 649-654 |
| Number of pages | 6 |
| Journal | Environmental Engineering and Management Journal |
| Volume | 10 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - May 2011 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
-
SDG 6 Clean Water and Sanitation -
SDG 14 Life Below Water
Keywords
- Carbon metabolism
- Enhanced biological phosphorus removal
- Nitrite accumulation
- Nutrient removal
- Phosphate precipitation
Fingerprint
Dive into the research topics of 'Characteristics of nutrient removal from synthetic wastewater with different organic substrates'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver