Ph control apparatus

Abstract

Abstract PURPOSE:To prevent the flotation of sludge in a final precipitation basin, by providing an air amount regulation part for comparing outputs of the regulation valve provided to an air passage, a pH regulation part and an airflow meter to regulate the opening degree of the regulation part so as to bring the deviation thereof to zero. CONSTITUTION:Air is sent into an aeration tank 1 through an air passage 2 by operating a blower 3 and microbial reaction is generated in said tank. The pH value in the tank 1 is detected by a pH meter 6 and compared with an objective value in a pH regulation part 7 and a necessary air sending amount is calculated by internal operation using the deviation thereof to be sent to an air amount regulation part 8. This signal is compared with the output of an airflow meter 5 in the air amount regulation part 8 and the opening degree of a regulation valve is regulated so as to bring the deviation thereof to zero. As a result, an air flow is regulated and the microbial reaction in the aeration tank 1 is subjected to speed control with the regulation of an air amount and a pH value is regulated to an objective value.

Inventors

• 👤 Takao Sekine
• 👤 孝夫 関根

Bibliographic Details