Sequencing-batch real-time control sewage treatment device

Abstract

The invention relates to a sequencing-batch real-time control sewage treatment device which mainly comprises a water inlet pump, a biological selection pool, a sequencing-batch sewage treatment pool, a chemical adding device, a dosing pump, a water decanter, an air blower, a sludge concentration meter, an ultrasonic liquid level meter, a pH meter, a DO (dissolved oxygen) meter, an ORP (oxidation-reduction potential) meter, an ammonia nitrogen online monitoring instrument, a DA / AD data converter, a PLC control cabinet, and a remote control computer, wherein the water inlet pump is sequentially connected with the biological selection pool and the sequencing-batch sewage treatment pool; and the sludge concentration meter and the ultrasonic liquid level meter are arranged in the sequencing-batch sewage treatment pool, the pH meter, the DO meter, the ORP meter and the ammonia nitrogen online monitoring instrument are arranged on the side wall of the sequencing-batch sewage treatment pool, and all the devices are connected with the DA / AD data converter by cables, and the PLC control cabinet is connected with the remote control computer via an Ethernet. The reaction completion time is judged according to the feature points of instrument detection data, and sludge bulking and electric energy dissipation caused by insufficient aeration or overlong aeration time are effectively prevented by using real-time control.

Description

technical field [0001] The invention relates to a sequence batch type real-time control sewage treatment device, which belongs to the technical field of sewage treatment. Background technique [0002] Sewage treatment sequence Batch activated sludge process is referred to as SBR. The SBR process is an activated sludge sewage treatment technology operated by intermittent aeration. The main feature is the orderly and intermittent operation in operation. The core of SBR technology is SBR reaction tank, SBR tank integrates homogenization, primary sedimentation, biodegradation, secondary sedimentation and other functions. In the same reaction tank, it consists of five processes of water intake, aeration, sedimentation, drainage and standby in chronological order. The existing conventional technology sets a certain time for each process and uses a timer to control it. However, the influent concentration of sewage is constantly changing. If the concentration of sewage is low, the a...

AI Technical Summary

Problems solved by technology

The existing conventional technology sets a certain time for each process and uses a timer to control it, but the influent concentration of the sewage is constantly changing. If the concentration of the sewage is low, the aeration time will be too long, and the SVI value will increase. It will cause sludge bulking and waste of electricity. In addition, if the concentration of sewage is too high, the aeration time will be insufficient, and the treated sewage will not meet the standard.

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