发明名称 BIOLOGICAL CLEANING OF WASTE WATER
摘要 <p>An air-driven contact filter for biological cleaning of waste water has spiral wound channels with an axis placed below the surface of the water. Air is blown into the center and water is displaced so that the channels will rotate.</p>
申请公布号 IE871355(L) 申请公布日期 1987.11.26
申请号 IE19870001355 申请日期 1987.05.25
申请人 AKSEL SONDERGARD FRANDSEN 发明人
分类号 C02F3/08;(IPC1-7):C02F3/00 主分类号 C02F3/08
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