| 摘要 |
<p>PURPOSE:To carry out good agitation securely and digestive reaction sufficiently without making sludge fine pieces by providing a vertically long agitating screw encircled with an inner cylinder in a vertically low airtight digestion tank. CONSTITUTION:A vertically long agitation screw 3 encircled with an inner cylinder 2 is installed in a vertically long airtight digestion tank 1. As a result, good agitation can be carried out securely without making sludge into fine pieces in a digestion tank for methane fermentation. The speed of waste water treatment by means of methane fermentation process to be completed in a single digestion tank, therefore, can be increased. In other words, agitation effect and treatment speed can be increased without providing a precipitation separating device for sludge.</p> |
