A feasibility study of applying a microbial carrier derived from waste diaper for the purification of pond water

• Main Authors: Song-En Peng, 彭頌恩
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/70830348634229011748

碩士 === 嘉南藥理科技大學 === 環境工程與科學系碩士班 === 96 === In this study, an innovative contact aeration process was constructed at Tainan municipal culture center for pond water treatment. The aims of this study are to evaluate the feasibility of a new microbial carrier and to evaluate the system efficiency. The microbial carrier employed in this study was prepared from non-woven material which was obtained from waste diaper. A continues operation was carried out for 192 days and the effluent was discharged to the pond for water recycling. This study mainly examined the effects of two parameters including carrier quantity and hydraulic retention time (HRT) on the system performance. The result of the study indicated that the best effluent quality was found with a HRT of 3 hours when the same number of carrier was employed in different runs. The highest removals on turbidity, suspended solid, chemical oxygen demand, chlorophyll-a and total phosphorus was observed and the efficiency were 95, 99.9, 90, 96 and 98%, respectively. The result of the nitrogen mass balance calculation also revealed that the nitrogen removal of 55% was achieved. As for the carrier packing ratio, a volumetric ratio of 0.92% could lead to the best system performance. One thing should be noted was that the carrier packing ratio adopted in this study was with a range of 0.62 - 0.92%. The low packing ratio means that this system is with the advantages of space saving and could be as a practical technology for pond water treatment. This study recycled the non-woven material obtained from the waste diaper as the microbial carrier for the treatment of pond water. The results showed that this technology was cost-effective to produce and establish, robust, efficient, and easy to operate and maintain. Therefore, this innovative technology could be considered as an alternative for the treatment of polluted pond water in the future.