| 摘要 |
<p>PURPOSE:To increase treating efficiency, to reduce the treating time and to reduce the facility by forming a mixture of the fibrous or granular hydrophilic base material and livestock dung or barn compost into the lumpy filter medium, aerobically decomposing sewage on the surface of the medium and anaerobically decomposing the sewage in the medium. CONSTITUTION:The fibrous or granular hydrophilic base material is mixed with livestock dung, barn compost, etc., and the mixture is formed into a lump or plate to obtain the filter medium. The medium is packed in a sewage treating device to form a filter bed 1 consisting of the aggregates of the medium, and sewage is purified by the water trickling filter method. The surface of the filter medium 15 packed and accumulated in the bed 1 is used as the aerobe habitat 14 and the inner part as the anaerobe habitat 13. The water to be treated flows down through the bed and is purified by the aerobes and anaerobes propagating and being active in the medium.</p> |
