Real-time control method of short-cut nitrification coupling double SBR denitrification phosphorus removal

Abstract

The invention discloses real-time control system and method for short-cut nitrification and coupled double-SBR denitrifying phosphorus removal, belonging to the field of biological sewage treatment. The system comprises a raw water tank, two A<2> / O-SBR reactors, an N-SBR reactor, a PLC control cabinet and a computer. The method comprises the following steps of flowing raw water into the A<2> / O-SBR reactor to be subjected to an anaerobic phosphorus release reaction and then entering discharged water into the N-SBR reactor to be subjected to short-cut nitrification, wherein the nitrification process is controlled through the output of the computer; after the reaction is over, flowing nitrification liquid back into the A<2> / O-SBR reactor I to be subjected to an anaerobic denitrifying phosphorus removal reaction; after the anaerobic denitrifying phosphorus removal reaction is finished, performing aeration for a while, and then performing static settling and water draining so as to adjust the volume exchange ratio, the reaction time and the aeration quantity accordingly; after the reaction in the N-SBR reactor is finished, starting the A<2> / O-SBR reactor II of which the operation mode is the same as the A<2> / O-SBR reactor I, so that the vacancy rate of the N-SBR reactor can be reduced. The system and the method have the advantages that on-line real-time control is adopted, system operation is optimized, the degree of automation is high, the controllability is good, and deep nitrogen and phosphorus removal of low-C / N domestic sewage can be realized.

Description

technical field [0001] The invention relates to a real-time control system and method for short-range nitrification coupled with double SBR denitrification and phosphorus removal, and belongs to the technical field of sewage biological treatment. Background technique [0002] With the increasingly prominent problem of "eutrophication" of water bodies and the stricter standards for sewage discharge, the sewage treatment technology has moved from the stage of single removal of organic matter to the advanced treatment stage of removing both organic matter and nitrogen and phosphorus in order to control the Nitrogen and phosphorus removal for the purpose of nutrientization has become one of the research hotspots in the field of biological wastewater treatment. However, due to the contradictions between nitrifying bacteria, denitrifying bacteria, and phosphorus accumulating bacteria in terms of mud age and carbon source competition, the traditional nitrogen and phosphorus removal...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at problems such as low C / N of domestic sewage, poor nitrogen and phosphorus removal effect of traditional nitrogen and phosphorus removal process, and large energy consumption, etc., and couples short-range nitrification and denitrification phosphorus removal technology to realize synchronous depth of nitrogen and phosphorus removal, while employing real-time control to increase the controllability and flexibility of the device

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