Abstract
In order to keep the water supply stable in disaster conditions such as the Great East Japan Earthquake, the objective of the present study was to establish a manufacturing technology for high-speed processing of groundwater for domestic use in the case of disaster.
It was possible by high-speed water flow experiments using weak acid ion-exchange resin, to maintain the treated water pH level and sufficient iron-manganese removal capability for a long period of time. Based on these results, continuous water flow experiments using a combination of weak acid ionexchange resin and UF membrane were conducted with two space velocity (SV) conditions.; medium-SV of 100[1/hr] and high-SV of 200[1/hr].
As a result, although the total filtration water volume was lower than the target volume by 17% in the medium-SV conditions, an acceptable water quality level was obtained in the resin alone and a satisfactory quality was continuously achieved in the membrane permeate. In the high-SV conditions, total filtration water volume was lower than the target by 34%, but an acceptable water quality was continuously achieved in the membrane permeate.
