-
公开(公告)号：EP0641239B1
公开(公告)日：1997-09-10
申请号：EP92911203.5
申请日：1992-06-03
CPC分类号： B01D24/30 , B01D24/4684 , B01D24/4689
摘要： PCT No. PCT/SE92/00381 Sec. 371 Date Feb. 14, 1995 Sec. 102(e) Date Feb. 14, 1995 PCT Filed Jun. 3, 1992 PCT Pub. No. WO92/21422 PCT Pub. Date Dec. 10, 1992It is possible to filter a suspension or emulsion in a filter bed of particulate filter medium by allowing the suspension to flow upwards through the filter bed simultaneously as the medium flows downwards through a filtering tank wherein filtration takes place. Filtration thus takes place during counterflow between suspension and filter medium. The supply of suspension takes place in the lower part of the filter bed and the filtered liquid phase is taken away from a zone above the filter bed. The polluted filter medium close to the bottom of the filter tank is taken out for conveyance to a washing apparatus above the filter bed and after washing is returned to the upper side of the filter bed. For providing a filter which has a considerably lower construction height for a given and unchanged volume of the filter medium, the washing apparatus is lowered so that its lower part is at a level below the upper surface of the filter bed.
-
公开(公告)号：EP0641239A1
公开(公告)日：1995-03-08
申请号：EP92911203.0
申请日：1992-06-03
IPC分类号： B01D24
CPC分类号： B01D24/30 , B01D24/4684 , B01D24/4689
摘要： PCT No. PCT/SE92/00381 Sec. 371 Date Feb. 14, 1995 Sec. 102(e) Date Feb. 14, 1995 PCT Filed Jun. 3, 1992 PCT Pub. No. WO92/21422 PCT Pub. Date Dec. 10, 1992It is possible to filter a suspension or emulsion in a filter bed of particulate filter medium by allowing the suspension to flow upwards through the filter bed simultaneously as the medium flows downwards through a filtering tank wherein filtration takes place. Filtration thus takes place during counterflow between suspension and filter medium. The supply of suspension takes place in the lower part of the filter bed and the filtered liquid phase is taken away from a zone above the filter bed. The polluted filter medium close to the bottom of the filter tank is taken out for conveyance to a washing apparatus above the filter bed and after washing is returned to the upper side of the filter bed. For providing a filter which has a considerably lower construction height for a given and unchanged volume of the filter medium, the washing apparatus is lowered so that its lower part is at a level below the upper surface of the filter bed.
-
3.发明公开PROCESSING WATER IN A BIOLOGICALLY ACTIVATED AND CONTINUOUSLY OPERATING GRANULAR FILTER BED 失效水在生物激活，连续工作，颗粒过滤床处理
公开(公告)号：EP0748297A1
公开(公告)日：1996-12-18
申请号：EP95911536.0
申请日：1995-03-01
发明人： LARSSON, Hans, F. , JÖNSSON, Kurt
IPC分类号： C02F3
摘要： The present method provides a solution on problems in connection with nitrogen generation in or gas supply to a continuously operating granular filter in a biological process during processing water. The solution is that the biological process is carried out in the filter bed and that the filter medium (1) is transported from the bottom of the filter bed to the upper surface thereof, however with the essential difference that the filter medium (1) is not subjected to any washing in connection with this transport (2) and altogether not at all. The water from the transport is instead mixed with the water passed through and processed in the filter bed and are discharged together, eventually to a succeeding treatment step.
-
-
搜索结果
3 条记录 (耗时 0.009 秒)
