| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technology contributing to efficient sludge treatment in a water treatment apparatus having a sludge separation part for separating sludge, and a sludge digestion part for digesting the sludge in a treatment passage of water to be treated. <P>SOLUTION: In a wastewater treatment apparatus 100, a sludge digestion tank 130 branched from an anaerobic filter bed tank 110 promotes aerobic digestion of the sludge in an aerobic digestion part 131, and concentration treatment is carried out in an anaerobic filter bed part 141 at the downstream of the aerobic digestion part 13, thereby suppressing the amount of generated sludge. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
