Analysis on Water Quality Improvement of Fuchou Constructed Wetland,Taipei County, in Monsoon Season

• Main Authors: Pei-Hung Wu, 吳培鴻
• Other Authors: 梁昇
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/67139290322803923760

碩士 === 國立中興大學 === 水土保持學系所 === 96 === This study investigates the water quality variation of Fuchou constructed wetland in Monsoon Season. Fuchou constructed wetland locates downstream of Tahan river, a turbitary of Tan Shau River. The wetland is between Fuchou bridge and Chenlin bridge with the area of 15 hectares, in which water coveres 8.5 hectares. The treatment capacity is 11,000CMD and the water source pumpes from Taan channel, which the 90% of water belongs to house waste water. Four parts is included in this wetland as: open area, densed planting plot Ⅰ, densed planting plot Ⅱ,and ecological pool. The average contents of containments in May, 2007, for BOD5 concentration from the inflow of 21 mg/l decreases to the outflow of 10 mg/l, with pollutant reduction reaching 52.4%; for SS from the.inflow of 38 mg/l increases to the outflow of 46 mg/l , with pollutant reduction of -21.2%; for NH3-N from the inflow of 13 mg/l decreases to outflow of 8.4 mg/l, with pollutant reduction of 35.4%; and for TP from the inflow of 1.7 mg/l decreases to outflow of 0.91 mg/l , with pollutant reduction of 46.5%. The cases in June are from 31 mg/l to 16 mg/l, from 48 mg/l to 40 mg/l, from 6.9 mg/l to 2.1 mg/l, and from 1.1 mg/l to 0.28 mg/l; for BOD5, SS, NH3-N, and TP, respectively, with the pollutant reductions are 48.4%, 16.7%, 69.6%, and 74.5% accordingly. The superior of pollutant reduction in June to the May, indicates significantly the growth effect of the aquatic plants inside wetland while the negative value of SS reduction in May; indicates the inferior temperature environment for aguatic plants.