| 摘要 |
<p>PURPOSE:To prevent the generation of scum and the leakage of SS into treated water and to sufficiently return sludge by regulating the gas pressure of a gas collecting chamber to maintain the inflow into a solid-liq. separation part at a specified value, and preventing the deposition of sludge at the solid-liq. separation part. CONSTITUTION:In the anaerobic treating device, especially a sludge blanket type device, the first partition plate 3 inclined at an angle of about 45 deg. from one side on the liq. level and the second partition plate 4 crossing the plate 3 on the opposite side are provided at the upper part of a digestor vessel 1, and a sludge passage 5 is formed at the lower part. A solid-liq. separation part 6 is formed at the upper part of the digestion vessel 1 with the partition plates 3 and 4, a digestion part 7 is furnished at the lower part, the gas collecting chamber 15 is provided in an ascending passage 13 on the wall surface side of the partition plate 4, and the gas pressure is regulated by a regulating means. Consequently, the liq. level is controlled, the separability at the solid-liq. separation part 6 is improved, sludge is not deposited, scum is not generated, and the leakage of SS into treated water is controlled.</p> |
