This study was carried out to prevent heterotrophic bacterial growth in home reverse osmosis systems with a complex filter and the bioceramic ball during the period from March 1997 to February 1998. The activated carbon filters in home reverse osmosis systems are generally used to improve the taste of purified water. When the activated carbon filters have been operating, heterotrophic bacteria have been generated in them. To solve this problem, a complex filter composed of two parts of silver impregnated activated carbon and MF membrane was developed to remove heterotrophic bacteria during filtration. Home reverse osmosis system needs a reservoir for small flux, and it tends to be contaminated by heterotophic bacteria from the air. The bioceramic ball was installed in the reservoir that contained purified water through a reverse osmosis membrane and a complex filter to suppress heterotrophic bacterial growth. The results were as follows ; 1. The inhibition effect of the bioceramic ball to heterotrophic bacterial growth was persisted after 48 hours and was appreciate to the Korean Standard of Drinking Water. 2. The complex filter composed of two parts of silver impregnated activated carbon and MF membrane was prevented the heterotrophic bacteria from being generated for 30 days. 3. The number of heterotrophic bacteria have been kept up with below 5 cfu/㎖ for 12 months when the bioceramic ball was installed in the top of reservoir.
I. 서론
II. 실험재료 및 방법
III. 결과 및 고찰
IV. 결론