都市廢污水再利用之標的選擇－以高雄市中區污水處理廠為例

Selection of Reuse Targets on Wastewater in Urban Areas - A Case Study of Kaohsiung Central Wastewater Treatment Plant

10.7060/KNUJ.200406.0385

葉欣誠(Shin-Cheng Yeh)；陳珊玫(Shan-Mei Chen)

都市廢污水 ； 再利用 ； 回收 ； 層級分析法 ； wastewater ； reuse ； reclamation ； Analytic Hierarchy Process

高雄師大學報

16期（2004 / 06 / 01）

385 - 402

繁體中文

近年來，許多國家將廢污水做為一種供水來源，以取代其他水資源的需求。而在都市地區更因其廢污水具有水量固定的特性，因此許多國家的都市地區，將其廢污水回收再利用作為都市用水的水源之一。在高雄地區，中區污水處理廠提昇至二級處理，期望能將處理後水進行回收再利用。然而在高雄地區之用水標的眾多，如何選擇最佳標的，實為重要課題。本研究之目的，即探討都市廢污水進行再利用之評估準則，進而評選出最佳用水標的，再以高雄市中區污水處理廠為例，探討在最佳用水標的之下的效益分析。 本研究藉由文獻回顧，將都市廢污水再利用之標的分為七大項目，「農業用水」、 「工業用水」、「環保用水」、「都市用水」、「補助地下水」、「生活用水」及「注入水庫」。本研究使用層級分析法，藉由決策者及專家學者進行偏好決定，建議都市地區進行廢污水再利用之評估準則及各標的之權重。依據層級分析法，研究人員設計專家問卷，並將專家問卷結果進行分析。分析結果以「工業用水」、「農業用水」及「環保用水」為前三項最佳用水標的。將前三項最佳用水標的，以高雄市中區污水處理廠為例，在 2 萬、 5 萬及 10 萬 CMD 的回收水量下，分別以民國 95 、 100 、 105 年進行效益模擬結果，以「工業用水」－臨海工業區的效益最佳，「環保用水」－注入前鎮河次之，「農業用水」－曹公圳灌溉用水為效益最低。

In recent years, many countries have used wastewater as an alternative source of water supply in order to substitute water from other sources. Moreover, due to the property that the amount of the wastewater of the urban areas is relatively fixed, reclaimed wastewater bas been utilized as one of the major water sources of many countries. In Kaohsiung, the Central Wastewater Treatment Plant has promoted their treatment level to secondary for being able to reclaim and reuse the water. There are many targets for water use in Kaohsiung. Thus, how to determine the most important targets becomes a key issue. In Taiwan, wastewater reuse has been widely studied, but only limited research works in target identification can be found in the literature. The purpose of this research is then to investigate the principles with regard to how to reuse the wastewater in urban areas and furthermore, to determine appropriate reuse targets. Candidate wastewater reuse targets in this study includes “agriculture irrigation”, “industrial use”, “environmental use”, “urban use”, “groundwater recharge”, “life-use water”, and “infusion reservoir”. Through applications of the Analytic Hierarchy. Processes, industrial use, agriculture irrigation, and environmental use are identified as the most appropriate water reuse targets. Industrial use ( in Lin-Hai industry area), in particular, got the best results derived from simulations with a daily reuse capacity of 20,000, 50,000, and 100,000 tons in the year of 2006, 2011, and 2016, respectively. Environmental use for Chien-Jen River and agriculture irrigation for Tsao-Kong Canal System took the second and the third places, respectively. The research results of this study can be used as useful information for further studies in the field of systems analysis of wastewater reuse.