Fuzzy control device and method for A/O technique subsection water-feeding deep denitrogenation

Abstract

The present invention relates to an illegibility control device and method using A / O technical to denitride of the separated immersed depth, which is used in the sewage treatment system; a reaction pool consists of four sections; each section is provided with an oxygen-lacking zone and an oxygen-abundant zone; a COD sensor and a TKN sensor are arranged inside of a raw water container; a DO sensoris respectively arranged inside of each oxygen-abundant zone in each section of the reaction pool; the collected COD signal and TKN concentration signal are transferred into a simulated digital conversion device through the COD meter and TNK meter; and then the signal will be changed to C / N input variable digital signal; the input variable digital signal is input into the host machine of the illegibility controller; according to the illegibility control rule, the distributed coefficient for the water flow will be obtained. And then the volume of each oxygen-lacking zone and the volume of eachsection is taken as the output variable; besides, the control signal is input into a relay of the gas-insolating device, an adjusting device of the intake pump and a relay of the blender electric machinery; the method solves the technology problems of the nonlinear precision control and optimizing operation in the system.

Description

technical field [0001] The invention relates to a control device and a control method of a sewage biological denitrification system. Background technique [0002] Since the 1970s, with the increasing eutrophication of water bodies, nitrogen and phosphorus removal from sewage has been widely concerned in water pollution control. Nitrogen and phosphorus removal technology for the purpose of controlling eutrophication has become the main research direction of various countries. my country's latest sewage discharge standard (GB18918-2002) requires that the content of nitrogen and phosphorus in the effluent of all sewage units is less than 1mg / L for total phosphorus, less than 5mg / L for ammonia nitrogen, and less than 15mg / L for total nitrogen according to the level of the receiving water body (first-class standard). Although biological phosphorus removal has certain instability, the traditional process of biological phosphorus removal and auxiliary chemical phosphorus removal c...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of fuzzy control device and method for denitrification of depth of influent of a kind of A / O process subsection, to solve the non-linear precise control problem of A / O subsection influent sewage biological denitrification system; and solve A / O process Difficult technical problems in optimal operation and control of staged inflow deep denitrification system

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