碩士 / 嘉南藥理科技大學 / 環境工程與科學系碩士班 / 93 / This research is to study the performance of Sequencing Batch Membrane Bioreactor (SBMBR) for the improvement of outdoor aquaculture recycling water quality. Sludge retention time (SRT) and hydraulic retention time (HRT) were set at 20 days and 6.8 hours respectively. Two different operation modes were adopted to assess the treatment performance of the system, including the water quality of effluent and the concentration of activated sludge.
The results of this experiment showed that the MLSS concentration is 1564mg/L and 1892mg/L in run 1 and run 2. No ss is detected in the effluent. As for run 1 the removal efficiency of COD、BOD5 and Trubidity were 74%、77% and 97% respectively.
The resultes showed that the recycling water quality can be improved by different operation mode. After shifting the time interval of aerobic-settling-anaerobic operation, the removals of COD、BOD5 and Trubidity were 87%、84% and 98% respectively. These values met the aquaculture reuse standards of E. P. A., R. O. C.
The F/M ratio and the volumetric loading of this study were lower than these values of traditional AS treatment system. AS for run l and run 2 were 0.15kgBOD5/kgMLVSS-day、0.16kgBOD5/kgMLVSS-day、0.11kgBOD5/m3-day and 0.24kgBOD5/m3-day respectively.
For mass balance of nitrogen, the NH4+-N and Org.-N were 19 and 15% reduce. But both the NO2--N and NO3—N were 3% increase. Comparatively, the NH4+-N、NO2--N and NO3--N concentration of the effluent in run 1 were not removal completely. So the nitrification and the denitrification were far from ideal. However almost completely in run 2, the NH4+-N、Org.-N、NO2--N and NO3--N were 16.5、52、6.9and 0.5% reduce respectively.
The quality of aquaculture recycling water treated by SBMBR is acceptable. The bioreactor is recommended for water reuse in aquaculture.
| Identifer | oai:union.ndltd.org:TW/093CNUP5515027 |
| Date | January 2005 |
| Creators | Chun-Tsung Lin, 林春宗 |
| Contributors | none, 張錦松 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 106 |
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