| 摘要 |
PCT No. PCT/GB94/02474 Sec. 371 Date Aug. 9, 1996 Sec. 102(e) Date Aug. 9, 1996 PCT Filed Nov. 10, 1994 PCT Pub. No. WO95/13988 PCT Pub. Date May 26, 1995A water treatment system for submersion in a body of water to be treated comprises a water-soluble glass treatment agent and a water-insoluble retaining means for the water-soluble glass treatment agent. The retaining means is adapted, in use, to retain water in contact with the water-soluble glass and may be a hollow container for the water-soluble glass or a moisture penetrable polymer composition which can be used as a matrix containing particulate water soluble glass. The water-treatment system may be immersed in water to act over an extended period of time in preventing or reducing problems caused by corrosion, scaling and/or fouling.
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