Aeration tank dissolved oxygen concentration control system and sewage treatment system

• Main Author: XU JUNJIE
• Format: Patent
• Language: Chinese; English
• Published: 25.06.2014
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; CONTROLLING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The utility model discloses an aeration tank dissolved oxygen concentration control system and a sewage treatment system, wherein the aeration tank dissolved oxygen concentration control system comprises a dissolved oxygen instrument, a roots blower and a control device, wherein the dissolved oxygen instrument comprises a probe used for detecting the dissolved oxygen concentration in an aeration tank and a transmitter used for converting the dissolved oxygen concentration detected by the probe into electrical signals; the roots blower is used for sending air into the aeration tank, and the roots blower and the aeration tank are in one to one correspondence relation; the control device is connected with the transmitter of the dissolved oxygen instrument and the roots blower, and is used for controlling the running frequency of the roots blower according to the dissolved oxygen concentration detected, so as to change the air supply quantity of the roots blower. According to the utility model, the dissolved oxyg