System and method for monitoring municipal saprobia inhibitive ability in real time based on oxygen uptake rate (OUR)

Abstract

A system for monitoring municipal saprobia inhibitive ability in real time based on oxygen uptake rate (OUR) comprises an aeration siphon device communicated with a sewage supplying system and a sludge supplying system. The aeration siphon device is composed of an aeration groove and a siphon groove in adjoining mode, the wall of the aeration groove is higher than that of the siphon groove, the aeration groove is communicated with the sewage supplying system and the sludge supplying system, and the siphon groove is communicated with an inlet of a closed coiler flow-pushing type bioreactor through a siphon tube. A dissolved oxygen (DO) detection system detects DO values of the inlet and an outlet of the closed coiler flow-pushing type bioreactor, and the signal output end of the DO detection system is connected onto a programmable logic controller (PLC) control system which is connected with an alarm system. The core part of system for monitoring municipal saprobia inhibitive ability in real time adopts the closed coiler flow-pushing type bioreactor so as to monitor the DO value of the inlet and the DO of the outlet in real time, automatically calculate mutation condition of activated sludge OUR, determines OUR mutation rate with different inhibition degree through plenty of experiments, and judge inhibitable degree of the saprobia by comparing automatically calculated OUR mutation rate with a preset value.

Description

technical field [0001] The invention relates to the field of urban sewage treatment containing industrial wastewater, in particular to an OUR-based real-time monitoring system and method for the biological inhibition of urban sewage. Background technique [0002] Currently, the activated sludge process is the main process in the field of urban sewage treatment. Most urban sewage is composed of a mixture of domestic sewage and industrial wastewater. The industrial wastewater has complex components, and there may be toxic and harmful substances that can inhibit activated sludge. If the content exceeds a certain level (such as accidental discharge or illegal discharge), it will be It will cause harm to the biological treatment unit of the sewage treatment plant, deteriorate the quality of the effluent water, and fail to meet the discharge standards. The operation and management of sewage treatment plants have caused great difficulties, resulting in great economic losses and en...

AI Technical Summary

Problems solved by technology

On the basis of this principle, there are few real-time monitoring equipment for sewage bioinhibition, and the developed equipment has problems such as complex system, need to add nutrients, and long response time.

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