Recently, it is difficult to meet water quality standards with the existing water treatment because of deteriorated water quality of water sources and gradually reinforced water quality standards. In particular, since protozoa that cause water-borne diseases such as cryptosporidium and Giardia, etc., have to be removed, membrane filtration method has been adopted in many developed countries and membrane filtration facility is in a gradually increasing trend in Korea.
In membrane filtration plant, the flows of raw water, backwash water and air are supplied to the interior of each membrane module along the complex pipeline during the filtration and backwash processes. In these processes, as the flow is not in uniform distribution, trans membrane pressure is developed differently between blocks of the units in a membrane filtration facility. Thus, the optimal operations are difficult.
?? membrane filtration water treatment plant facilities currently operating have difficulty in optimal operations. For example, different trans membrane pressure between blocks shortens the development cycle due to uneven distribution of the flow. As trans membrane pressure between blocks leads to increase maintenance costs, depreciation for the membrane module, additional electricity cost, etc., membrane filtration operating status and various phenomena of ?? water treatment plant were investigated to improve the uneven distribution of the flow.
The overall aim of this research is to propose the new methodology for minimizing a non-flow condition in the membrane filtration. For this project accurate hydraulic modeling will be performed by KY-PIPE programme to determine the optimal piping system of membrane filtration from the raw water pump to the each unit.