碩士 / 崑山科技大學 / 環境工程研究所 / 98 / Sources of domestic livestock wastewater are mostly from pig farms and cattle farms in Taiwan. The management method of farm often is to use a large amount of water to maintain the sanitation of livestock farms and the health of pigs and cattle, and thus it causes the production of a considerable amount of wastewater. Currently, 98% of the pig farms with 200 or more breeding have set up wastewater treatment facilities, and a large proportion of them uses the three-stage wastewater treatment system developed by the Livestock Research Institute of the Council of Agriculture. However, the treated livestock wastewater still contains a large amount of nutrients. The waste water is very likely to cause the eutrophication of water bodies if it is discharged directly into the rivers or gutters.
The main purpose of this study is to lower potential of eutrophication by using Arthrospira platensis to purify treated waste water and to remove the excessive nitrogen and phosphorus nutrients. Therefore, A. platensis was incubated with high concentrations of nitrogen and phosphorus of livestock effluent water and BG-11 artificial medium.
The removal efficiencies of phosphate, ammonia nitrogen and nitrate nitrogen were 100%, 98% and 14% respectively, by A. platensis under BG-11 medium. In raw effluent water from pig farm, ammonia concentration is too high to lead the death of A. platensithe, so 2 and 4 times dilution of water was selected to cultivate A. platensis. The removal efficiencies of phosphate and total nitrogen were 96.6% and 61.2% respectively, under 2 times dilution, and 73% and 24% respectively, under 4 times dilution of raw effluent water.
Although the removal efficiency of phosphate was 85.3% in raw effluent water from cattle farm, nitrogen was not consumed by A. platensithe.
| Identifer | oai:union.ndltd.org:TW/098KSUT5515011 |
| Date | January 2010 |
| Creators | Cheng-Chen Tsai, 蔡政辰 |
| Contributors | 童淑珠 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 61 |
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