Applicability of Scale Prevention System Using Bioreactor in New Zealand Geothermal Field
- Conference
- Indonesian Geothermal Association Conference
- Year
- 2001
- Session
- Technology/Engineering
- Language
- English
- Paper number
- 2001-21
Full text
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Abstract
Applicability of scale prevention system using bioreactor in New Zealand geothermal field was investigated. It confirmed that Sulfolobus sp. Strain7 could not grow in New Zealand geothermal water and had to be used with heat exchanger like as original system. 20 bacteria were isolated from New Zealand geothermal water. 8 out of 20 bacteria had higher sulfur oxidizing abilities than Sulfolobus sp. Strain7. The size of bioreactor was estimated in the case of applying to Ohaaki geothermal power station. It was confirmed that only a part of H2S from discharged gas was enough for scale prevention. Excess H2SO4 was produced if all the H2S discharged from Ohaaki geothermal power station was treated.
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