| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a water cleaning facility in which a construction sludge layer, forming an aerobic microorganism carrier layer, and an anaerobic microorganism carrier layer are vertically arranged and plants are grown on the construction sludge layer so as to highly efficiently remove nutrient salts such as nitrogen and phosphorus while contributing industrial waste countermeasure. <P>SOLUTION: This water cleaning facility 1 is constituted of the anaerobic microorganism support layer 2 arranged in a lower part of the facility, the construction sludge layer 3 arranged on the upper surface of the microorganism support layer 2, the plants 4 growing on the construction sludge layer 3 and a drainage pipe 5 having one end opening part 5-1 positioned in the lower part of the anaerobic microorganism support layer 2 and another end opening part 5-2 positioned in the boundary zone 6 between the microorganism support layer 2 and the construction sludge layer 3 to release cleaned water to the outside of the facility. The anaerobic microorganism support layer 2 is formed from glass foamed cullets and the construction sludge layer 3 is formed from a dehydrated cake composed of discharged soil in a construction work. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
