| 摘要 |
FIELD: treatment of sewage and filtration of sediment; dewatering of sludge of industrial sewage. SUBSTANCE: filtration is effected in hermetically closed chambers by means of pressure built up by pump or by means of pressure of air fed to filtrating chambers or other devices through filtering tapes mounted inside filtering chambers to system of drive and non-drive rollers forming closed loop around each intake chamber or group chambers after closing of longitudinal valve and pressing of filtering tapes to intake chambers by means of pressing chambers set in motion by leverage. During motion of filtering tapes, sediment is removed from them by blowing off and/or with the aid of scrapers. Sediment is removed through longitudinal hole provided in screw conveyer after relieving the pressure in chamber; opening the longitudinal valve and releasing the filtering tapes will be effected by means of leverage. EFFECT: enhanced efficiency. |
