| 摘要 |
<p>PURPOSE:To provide a simple and effective quality improvement method of water using the activity of bacteria, low in installation cost and adaptable to rivers and a drainageway and also useful for preventing the quality lowering of water not only in rivers or the drainageway but also in a fish pond, a fish preserve, a live fish transport tank or an aquarium. CONSTITUTION:A hydrohobic porous material 2 having aerobic bacteria supported thereon or capable of supporting said bacteria is brought into contact with objective water. The porous material has a sheet like shape, a cylindrical shape or a bag like shape and can contain a bacteria carrier 5 therein and, if desired, aerobic bacteria may be supported thereon.</p> |
