現場電解消毒技術控制遊憩用水水質之研究——以溫泉及SPA用水為例

The Study of Electrolysis Technique Applied in Recreational Water Quality Management-Case Studies of Hot Spring and SPA

遊憩用水包含相當廣泛，本研究針對溫泉、水療池的水質維持進行探討。傳統的消毒方式就是加氯消毒，但氯系消毒藥劑有儲存運送與操作之高風險。本研究即以新穎電解技術產生電解消毒液(MIOX)應用於遊憩用水消毒作為研究主軸，探討電解消毒技術對溫泉及水療池中水質之影響，透過水質檢驗評估與成本分析，以評估最適操作條件。本研究利用電解消毒液(MIOX)，應用於水療池與溫泉池進行消毒研究。首先於某一SPA水療池進行研究，原水pH為7.9~8.3，溫度約為29℃，氧化還原電位約為＋100 mV，導電度約為350 μS/cm，結果顯示，需將水中自由餘氯濃度控制在0.6 mg/L as Cl2，方可將總菌落數抑制在符合法規標準；接下來於某一溫泉飯店進行溫泉池消毒評估，此一溫泉屬鹼性碳酸氫鹽泉，原泉pH值約為8.9，溫度約為38℃，氧化還原電位約為－－26 mV，導電度約為3900 μS/cm，結果顯示，溫泉水在pH值小於8.9時，需將水中自由餘氯控制在0.44 mg/L as Cl2以上；而pH值高於8.9時，則需將水中自由餘氯控制在0.55 mg/L as Cl2以上，方可將總菌落數抑制在符合法規標準。在加藥成本計算，若以符合管制微生物之考量前提，針對本研究利用電解消毒液(MIOX)消毒處理每噸水，水療池及溫泉池的加藥成本分別需0.04元（新台幣，NT)／每噸水及0.02元（新台幣，NT）／每噸水。

The recreational water included in many different areas. This research was mainly focused on the disinfection process of water quality in SPA and hot spring pools. The chlorine was used as chemical agents in the traditional disinfection process of recreational water. However, chlorine could induce toxic considerations during the process operation and water delivery. Therefore, a technique, electrolysis process, was newly developed in this study which evaluated that the parameters effects of electrolysis disinfection process applied in SPA and hot spring water. Moreover, different types of electrolysis process, their on site operations and economic costs were also considered. The pilot studies of this electrolysis technique were carried both in Chia-Nan University and Tai-An Hot Spring Resort. The raw water quality of SPA in Chin-Nan University was as following, pH 7.96.3, temperature 29℃, ORP 100 mV and the conductivity 350 μS/cm. The result indicated that the free chlorine value at 0.6 mg/L as Cl2 reduced the Heterotrophic Plate Count to reach the water quality standard. The raw water quality of Hot spring in Tai-An was as following, pH 8.6~9.2, the temperature 38℃, ORP-26 mV, and the conductivity 3900 μS/cm. The result indicated that the Heterotrophic Plate Count reached the water quality standard, while free chlorine count was adjusted to 0.44 mg/L as Cl2 and 0.55 mg/E as Cl2 under the pH less, and more than 8.9, respectively. Finally, the operation costs for two pilot experiments were calculated, which illustrated that the capital cost of electrolysis treatment was NTSO.04/ton for SPA water and NT$0.02/ton for Hot spring water, respectively.