【発明の名称】溶存酸素濃度制御装置

Japanese Patent JPH0683834

B2

PURPOSE:To improve energy efficiency by providing a DO control section which detects the DO value in an aeration tank and controls an aeration rate and a DO value monitor section. CONSTITUTION:A DO detector 4 is provided in the aeration tank 1 and the dissolved oxygen concn. value (DO value) in the aeration tank 1 is detected by the same. An air suction section 5 is provided in the tank 1 in order to control the DO value and the aeration air flow sucked form the air suction section 5 is controlled by controlling the value opening degree of an aeration air flow control valve 7 driven by an air flow control section 6. The dissolved oxygen concn. controller 12 has a process input/output section 13, a rate computing section 14, the DO value monitor section 15, a statistic processing section 16, and an energy saving rate pattern selecting section 17. The DO value X detected by the DO detector 4 is monitored and the aeration air flow is controlled. The saving of energy is attained in this way.

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KOBAYASHI SHUICHIRO
PPONDA KAZUHIRO
KUNIMI MASAKI

JP13979488A

October 26, 1994

June 07, 1988

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TOKYO SHIBAURA ELECTRIC CO

C02F3/12; G05D21/00; (IPC1-7): C02F3/12; G05D21/00

Yasuo Miyoshi (1 outside)

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