應用水質指標於農村受污染河川淨化成效之評估

Evaluation of the Purification Effectiveness of the Contaminated Rural River with Water Quality Indexes

陳鴻烈(Paris-Honglay Chen) ； 許振峯(Cheng-Feng Hsu) ； 蔡大偉(David D.-W. Tsai)

《中華水土保持學報》 42卷1期 (2011/03) Pp. 67-77

https://doi.org/10.29417/JCSWC.201103_42(1).0007

摘要

本研究之農村聚落河水取自河川污染指標(RPI)為「嚴重污染」之河水，以生態工程加以淨化處理，並以「水體分類標準」、河川水質指標(NSF-WQI、WQI8、WQI5)及RPI來比較處理前後之水質狀況。經過18個月之實場運轉及水質監測，整場平均淨化效率，可將RPI提升至「中度污染」，並符合「地面水體分類及水質標準」中「丁類水體」之灌溉使用目標。經研究結果顯示，本水質淨化場址除達到預期之淨化效益與處理目標外，以WQI5來表示反應淨化成效較顯著，且所需之水質參數少而具有實用性，因此分析水質參數並結合WQI5指標，具有方便性及工程效益評估之價值。

關鍵字

河川水質指標 ； 生態工程 ； 農村污水

並列摘要

This study utilized the ecological engineering measures to treat the 'heavy-polluted' river which was contaminated by rural wastewater using 'river pollution index' The water quality indice, water body classification, 'water quality indicator' (WQI) including NSF-WQI, WQI5 and WQI8 and RPI were used to evaluate the design function. After 18 months monitoring, the system performance was improved to the condition of 'medium-polluted' level in terms of RPI. The effluent reached to D category based on surface water body classifications and water quality standards. The results indicate that WQI5 is a sensible and practical index. Hence, this study demonstrates that the water quality monitoring combined with WQI5 evaluation can be an important and convenient method. Meanwhile, the proposed system is also feasible.

並列關鍵字

rural wastewater ； water quality index ； ecological engineering