碩士 / 嘉南藥理科技大學 / 環境工程與科學系 / 101 / Ultrafiltration (UF) is considered as one of the most promising development in the reverse osmosis (RO) pre-treatment methods. Some advantages of UF is that it can extend the usage of the RO, reduce membrane replacement, and can provide more stable water quality compared with the traditional RO pretreatment systems.
This study evaluated and assessed the combined microalgae culture and desalination systems for water resources including the original use of desalination pretreatment in the UF filtration system. The microalgae culture system was installed before the processing unit which is measured by 3μm films located in the effluent of the ecological pond to confirm the feasibility of desalination systems and its impact on the RO membrane treatment system. Further assessment of the microalgae aquaculture wastewater recycling system was made because the wastewater was released directly into the RO system and may result in the production of algal extracellular polymer substance (EPS) which may cause serious damage in the film if the concentration is too high. The assessment of the microalgae aquaculture wastewater in the ecological pond was also done by using 3μm film.
Results showed that the RO membrane produced an average flux of 0.54 m3/m2-day, the average thermal discharge and wastewater average flux was both 0.37 m3/m2-day in the ecological pond. Microalgae aquaculture wastewater with 3μm film produced an average flux of 0.35 m3/m2-day, the slight difference in the value can be attributed to the difference in temperature, drainage, microalgae culture and microalgae aquaculture wastewater.
In this study four kinds of RO membrane feed water component was tested, thermal discharge to less than 0.2μm dissolved organic matter dominated, 3μm film ecological pond to the larger particles more than 1μm as the main material. This large particulate matter form a filter cake in the RO membrane surface, the cake is located under the stack with larger pores and this stock in the water feed produced flux of which the value is higher than the three kinds of feed. Microalgae and microalgae aqualculture farming wastewater in the ecological pond effluent with 3μm film resulted to less than 0.2μm dissolved organic matter, the feed water contains a lot of microbial byproducts which falls under Class IV water quality, but the RO membrane was composed of organic species that belongs to the third and the fifth class sulfonic acid and humic acid-based. Natural water soluble in acid and humic acid that are readily adsorbed to the RO membrane was used in this study with different water feed, RO membrane surface, accumulated inorganic content, temperature, ecological pond drainage and 3μm film inorganic components in Calcium (Ca) and Magnesium (Mg) based. Microalgae and microalgae aquaculture farming wastewater in the ecological pond effluent was studied using 3μm film located in the RO membrane surface with mineral content and minimum inorganic component composed Ca, Mg and Boron (B).
Key word：Ultrafiltration、Reverse Osmosis Treatment、Desalination、Aquaculture Farming.
| Identifer | oai:union.ndltd.org:TW/101CNUP0515018 |
| Date | January 2013 |
| Creators | SUN,WEI-LIANG, 孫瑋良 |
| Contributors | KAN,CHI-CHUAN, 甘其銓 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 60 |
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