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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0268214 (1981-05-29) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 5 인용 특허 : 3 |
A digestor includes a tank and an inverted dish-shaped cover, the lower end of which extends into sludge contained within the tank. The cover is ballasted by a number of ballast members which resemble tubs and which are integrally formed of concrete. Each ballast member is mounted with its cavity fa
An apparatus for digesting sludge comprising: a cylindrical tank, a cover adapted to move upwardly and downwardly within the tank, with the cover having an upright cylindrical sidewall the lower end thereof adapted to project into the sludge to form a gas-tight seal therewith and with gas being stor
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