| 摘要 |
<p>The invention relates to a method for operating an upflow sludge blanket filtering plant for separating particulate impurities from the raw water being treated, using several reactor vessels (10). Said reactor vessels (10) have raw water supply channels (1) in the base area and clarified water channels (4) in the top area, the water which has been purified flowing out of the reactor vessels via said channels (4). Sludge drainage chambers (8) are located between or next to the reactor vessels (10) and are hydraulically connected thereto. Impurities from the raw water are drained from the sludge drainage chambers (8) in the form of sludge by a sludge drainage device (7). The invention is characterised in that sludge is only drained from a sub-set of sludge drainage chambers (8) of the upflow sludge blanket filtering plant at any one time and in that the raw water supply channels of the reactor vessels (10) are blocked off by means of slider devices (6) whilst the sludge is being drained, said reactor vessels being hydraulically directly connected to their respective sludge drainage chambers. Said channels are re-opened after drainage. This prevents the technological shortcomings of known methods of operating upflow sludge blanket filtering plants from arising and enables the throughflow capacity of the water treatment plant to be increased to its full potential of 100 %.</p> |
