碩士 / 國立臺北科技大學 / 環境工程與管理研究所 / 104 / A novel osmotic membrane bioreactor (OMBR) system has been recently recognized as a promising technology in wastewater treatment and reuse. OMBR utilizes osmotic pressure of draw solution as driving force to extract clean water from the bioreactor mixed liquor into a draw solution without external pressure. However, the membrane fouling and salt accumulation were still the big challenges in OMBR for long-term operation. Hence, the study aims to develop novel sponge based moving bed-OMBR hybrid systems MgCl2 salt as the draw solution for wastewater treatment. This study investigated the effects of high salinity wastewater on bacterial community in sponge based moving bed-OMBR hybrid systems using high-salt-tolerant microorganisms. Moreover, normal microorganisms were used in sponge based moving bed-OMBR systems to compare the treatment efficiency.
The results show that the bacterial community attached into sponge could tolerate the highly saline wastewater up to 24 g/L and overall sponge based moving bed-OMBR hybrid systems could remove organic matter and nutrient removal efficiency of TOC = 100 %, NH4+ = 100 %, and PO43- = 98.28 % respectively. During 90 day operation, a stable water flux was achieved around 1.5 LMH since most of bacterial attached on sponge instead of FO membrane, as a result of low membrane fouling. Meanwhile, normal microorganisms used in sponge based moving bed-OMBR system obtained a higher water flux of 3.1 LMH and removed TOC of 100 %, NH4+ of 100 %, and PO43- of 96.72 %.
| Identifer | oai:union.ndltd.org:TW/104TIT05087088 |
| Creators | Ying-Hsuan Chen, 陳瑩萱 |
| Contributors | Nguyen Cong Nguyen, Shiao-Shing Chen, 阮公元, 陳孝行 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 0 |
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