Monitoring Biological Activity at Geothermal Power Plants

Pryfogle, Peter

Idaho National Laboratory

关键词: Microbial Growth;    Geothermal Power Plants;    15 - Geothermal Energy;    Power Plant;    Geothermal;   

DOI  :  10.2172/911257
RP-ID  :  INL/EXT-05-00803
RP-ID  :  DE-AC07-99ID-13727
RP-ID  :  911257

美国|英语

来源: UNT Digital Library

【 摘 要 】

The economic impact of microbial growth in geothermal power plants has been estimated to be as high as $500,000 annually for a 100 MWe plant. Many methods are available to monitor biological activity at these facilities; however, very few plants have any on-line monitoring program in place. Metal coupon, selective culturing (MPN), total organic carbon (TOC), adenosine triphosphate (ATP), respirometry, phospholipid fatty acid (PLFA), and denaturing gradient gel electrophoresis (DGGE) characterizations have been conducted using water samples collected from geothermal plants located in California and Utah. In addition, the on-line performance of a commercial electrochemical monitor, the BIoGEORGE?, has been evaluated during extended deployments at geothermal facilities. This report provides a review of these techniques, presents data on their application from laboratory and field studies, and discusses their value in characterizing and monitoring biological activities at geothermal power plants.