| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 |
22권 2호, p.1888 |
| 발표분야 |
환경 |
| 제목 |
Membrane-based dewatering processes using FO and MD for nitrogen recovery from wastewater |
| 초록 |
Forward osmosis (FO) and biological nitrification processes were integrated. High strength ammonia wastewater was partially nitrified at an ammonia conversion rate of 1.34 ± 0.25 kg-N/m3-day. The simultaneous FO process concentrated the wastewater at concentration factors (CFs) of up to 2.34 during the partial nitritation (PN) reaction. It was found that salinity higher than 17 g-TDS/L inhibited the activity of the nitrite-oxidizing bacteria, but not the ammonia-oxidizing bacteria. To concentrate the nitrogen content further, direct contact membrane distillation (DCMD) was applied. The ratio of transferred ammonia to water (i.e., specific ammonia transfer: SAT) was controlled by operational conditions of membrane materials, pH and temperature. It was identified that free ammonia (FA) concentration has a critical role on SAT values under different total ammoniacal nitrogen concentration and pH. |
| 저자 |
배효관1, 정다운1, Lat Lat Tun2
|
| 소속 |
1한국과학기술(연), 2Yangon Technological Univ. |
| 키워드 |
친환경 |
| E-Mail |
|
| 원문파일 |
초록 보기 |
