Device and method for automatically monitoring activity of biological sludge based on multiple parameters

Abstract

The invention discloses a device and a method for automatically monitoring the activity of biological sludge based on multiple parameters in the technical field of sewage treatment. The device for automatically monitoring the activity of the biological sludge based on the multiple parameters comprises a pre-aeration system, a mixed reaction system, a measurement system and a control and data processing system, and the mixed reaction system is connected with the pre-aeration system and the measurement system respectively; and the control and data processing system controls each movable part ofthe pre-aeration system, the mixed reaction system and the measurement system, and acquires and processes data on line. The device and the method for automatically monitoring the activity of the biological sludge based on the multiple parameters can realize 24h online measurement of the respiration rate all day long and characterize the nitrification activity and the denitrification activity of the activated sludge, so that the activity change conditions of nitrifying bacteria and denitrifying bacteria in the biological sludge can be known intuitively, and a basis is provided for controlling nitrification and denitrification processes in an activated sludge treatment system.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a device and method for automatically monitoring biological sludge activity based on multiple parameters. Background technique [0002] Most of the sewage treatment system is based on activated sludge treatment, and the traditional biological denitrification process is often used to reduce the concentration of nitrogen compounds in the effluent. The principle of biological denitrification process is to convert ammonia nitrogen into nitrate nitrogen through the growth and metabolic activities of microorganisms, and then convert it into nitrogen gas and remove it from water. The former is called nitrification process, which mainly occurs under aerobic conditions and needs oxygen as an electron acceptor; the latter is called denitrification process, which occurs in anoxic environment and needs organic carbon sources as electron donors. The coordination of nitrification and...

AI Technical Summary

Problems solved by technology

Because the microbial community in the activated sludge treatment system is very complex, and the biochemical reaction process is nonlinear and changeable, the traditional sludge indicators cannot fully and accurately reflect the activity changes of nitrifying bacteria and denitrifying bacteria in biological sludge. , this kind of judgment method not only takes a long time, but also has hysteresis, and cannot fully reflect the activity and degradation ability of nitrifying bacteria and denitrifying bacteria. The control strategy based on this judgment method is blind

The use of such judgment methods and traditional sludge indicators will lead to poor treatment effect and low efficiency of the sewage treatment system, and cannot reflect the actual state of activated sludge

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