| Title | Development of a Commercial Plant for Arsenic Removal from Geothermal Hot Water at Hatchobaru Power Plant |
|---|---|
| Authors | Yuuji Hamada, Shouzou Tsukamoto, Kazuaki Satou, Kouhei Ooishi |
| Year | 2005 |
| Conference | World Geothermal Congress |
| Keywords | arsenic remover for geothermal hot water,involvement in the local community life |
| Abstract | This paper presents the arsenic removal plant and treated water supply system to hot spring resorts, developed by Kyushu Electric Power Co., Inc. (KEPCO) In 1991, we started a research project and installed the pilot plant with the treatment capacity of 15 t/h at Hatchobaru Power Plant and have accumulated our basic technology. In 2000, the Ministry of Economy, Trade and Industry of Japan completed the plant with a treatment capacity of 100 t/h for treated water supply system at Hatchobaru, and then, operated for three years with success. In this plant, arsenic concentration was reduced from 3-4mg/L down to the value less than 0.01mg/L that is the upper limit of environmental regulation for treated water in Japan. The plant has been transferred from the government to KEPCO after three years experiments. Three organizations which are local community (Sujiyu District), local government (Kokonoe Town) and KEPCO to ensure effective utilization of treated water. We are now providing treated water to hot spring resorts through this system. |