To provide an anaerobic treatment apparatus and an anaerobic treatment method which can efficiently process waste water containing a low-concentration organic matter.
The anaerobic treatment apparatus includes a tank which comprises preparing the granule of an anaerobic microorganism, and is configured that the anaerobic treatment of organic matter containing waste water is carried out by the anaerobic microorganism in the tank, wherein the biochemical oxygen demand of the organic matter containing waste water is at most 1,200 mg/L, the agitation means which has a stirring blade arranged at the bottom in the tank is prepared, and the agitation means agitates the inside of the tank so that the flow rate in the position separated from the terminal of the stirring blade by 10 cm in the radial direction outside may exceed 0.3 m/sec and may become at most 0.8 m/sec.
AKASHI AKIRA
SHIODA NORIAKI
| JPH0474597A | 1992-03-09 | |||
| JP2006255514A | 2006-09-28 |
Hiroaki Nakatani
Yuichi Koyama