| Title |
Characteristics of Biological Nutrient Removal with Respect to the Variation of Organic Carbon Sources in an Intermittently Aerated Activated Sludge Process |
| Authors |
김종민(Jong Min Kim),임도영(Do Young Lim),고광백(Kwang Baik Ko),정연규(Youn Kyoo Choung) |
| Abstract |
Effects of various organic carbon sources on biological nutrient removal were investigated. Acclimated activated sludges were supplied in synthetic wastewater in a series of lab-scale sequencing batch reactors, which were operated in the 2 hour anoxic and 4 hour aerobic mode during a 12 hour period. The results show that phosphorus release and uptake occurred both in a culture fed with glucose and in one fed with sodium acetate. However, the rate of phosphorus release and uptake was higher in the culture fed with sodium acetate than in the culture fed with glucose. Variation of organic carbon sources in influent did not inhibit nitrification in any rector. Relatively significant denitrification was observed in all reactors in the beginning of aerobic phase since DO concentrations were rather low and organic content was relatively high during this period. As G bacteria might outnumber Poly-P bacteria in a culture fed with a mixture of glucose and sodium acetate. the rate of phosphorus release and uptake was lower in the culture than in a culture fed with sodium acetate only. |