| 摘要 |
<p>PURPOSE:To prevent deterioration of function by dividing flow channel of drain into two, one for the contact oxidized channel filled with filling materials and the other for bypass channel. CONSTITUTION:A channel 1 is divided into two with a partition 3 located on the flowing direction of drain, and one side of divided channel is filled with filling materials 7 to form a contact oxidized channel 2. At the upper end of the other divided channel, a weir 5 is provided to form a bypass channel 3. A screen 6 is installed at the inlet of contact oxidized channel 2. Filling materials 7 are a number of block type accumulated corrugated plastic plates at fixed intervals. Said preparation prevents filling materials from getting breakage or loss caused by washing away in case of an unusual water rise, and keeps purifying performance free from being damaged.</p> |
