Optimized Pre-Treatment for RO-Plants:Biofouling Management with BiosS-Treat(R)Technology
Biofouling of RO membranes is caused by biological and organic matter which is present in nearly all natural waters and still today is one of the major obstacles for safe and economic RO- plant operation.Although most RO plants are equipped with pre- treatment systems according to the state of the art, although they mostly are designed and realized well and even if the operation is done in a good manner, biofouling prevails in many RO plants. Therefore it is mandatory to scrutinize the conventional biofouling prevention used today and to explore potential alternatives. These investigations have been carried out under large scale conditions at the water treatment facilities of Evoniks Leuna-power plant in Germany which was designed and realised by BHU staff. As a result hereof, a new biofouling management (BiosS-Treat(R)) has been developed, which provides a preventive concept based on microbiological aspects. The new strategy is not to sanitize the system by killing bacteria but to inactivate the bacteria-growth by limitation of nutrients and by metabolic inhibition by dosing an enzyme inhibitor. After the changeover to the new BiosS-Treat(R)- pre-treatment, the availability of the RO plant at Leuna was increased, the operation cost could be reduced tremendously, and the membrane replacement could be minimized. BiosS-Treat(R)- has been implemented for seawater applications as well and the function and achievable savings could be confirmed.
Seawater Brackish Water Desalination Reverse Osmosis Pre-Treatment Biofouling
Martin Stahl Ulrich Keil
BHU Umwelttechnik GmbH, Stuttgarter Strasse 57, 74321 Bietigheim-Bissingen/Germany Evonik Energy Services GmbH, R(u)ttenseheider Strasse 1-3,45218 Essen/Germany
国际会议
2010 Asia-Pacific Conference on Desalination and Water Reclamation(2010 亚太脱盐大会)
青岛
英文
152-158
2010-06-22（万方平台首次上网日期，不代表论文的发表时间）