| 摘要 |
<p>A water biological treatment assembly is fabricated either in glass fibre reinforced plastic or polyethylene, and treats water emerging from fish farms, fish ponds or swimming pools. The assembly has three containers arranged in cascading series. The first container has a cylindrical upper section and has a 60[deg] cone at the base. The cylindrical section further has an overflow pipe whose inlet is at the centre surface point. The second, third and any subsequent containers are rectangular, and have a shallow funnel shaped base with slide-valve operated drain (5). The second container has a water oxygenation system. All containers are supported by height-adjustable frames.</p> |
