Title:
【発明の名称】曝気処理装置
Document Type and Number:
Japanese Patent JP3087914
Kind Code:
B2
Abstract:
PURPOSE:To improve efficiency in dissolving oxygen and to increase the dissolved oxygen concn. by vertically providing a partition plate in a deep aeration tank >=10m deep to form an upward passage and a downward passage, furnishing an upper diffuser and a lower diffuser and further providing a passage for a gas staying in the top cavity to the upper diffuser. CONSTITUTION:A water A to be treated contg. org. matter such as sewage and night soil supplied to an aeration tank 1 is air-lifted by a concd. oxygne D introduced from a lower diffuser 6, circulated through the upward passage 3 and downward passage 4 of the tank 1 and aerobically oxidized. An appropriate amt. of return sludge G from a settling tank 40 is introduced through a sludge inlet pipe 33, and the fine bubble regenerated at the shallow part deposits on activated sludge which is thereby floated. The gas E staying in the top cavity of the tank 1 is introduced by a circualting blower 11 from the upper diffuser 5 through a passage 10 to promote the settling of the activated aludge.
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Inventors:
Osamu Senoo
Application Number:
JP20220691A
Publication Date:
September 18, 2000
Filing Date:
July 18, 1991
Export Citation:
Assignee:
Mitsubishi Kakoki Co., Ltd.
International Classes:
C02F3/22; C02F3/26; (IPC1-7): C02F3/26; C02F3/22
Domestic Patent References:
| JP3137993A | ||||
| JP58112091A |