Aeration and carbon source addition optimization control system and method for mud film composite sewage treatment process

Abstract

The invention discloses an aeration and carbon source addition optimization control system and method for a mud film composite sewage treatment process, and is mainly applied to a continuous flow municipal sewage treatment process. The control system comprises an online monitoring system, an aeration system, an aeration PLC control system, a carbon source adding system and a carbon source adding PLC control system. On-line monitoring data of inlet water of a biochemical pool is collected as a feedforward parameter, on-line monitoring data of the biochemical pool along the way is collected as aprocess parameter, on-line monitoring data of the tail end of the biochemical pool is collected as a feedback parameter, and a neural network algorithm is utilized to obtain a reduction and optimization aeration and carbon source addition control strategy. The system and the method are suitable for different water inlet load conditions, especially for low water inlet load conditions, aeration energy consumption and external carbon source chemical consumption are reduced, and it is guaranteed that effluent of COD, TN and NH4-N reaches the standard. The system and the method are suitable for sewage treatment plants of various scales and upgraded and reformed sewage treatment plants; according to the method, the energy-saving and consumption-reducing effects and the carbon source adding effect are obvious, and large energy-saving and consumption-reducing benefits and carbon source adding amount reducing benefits can be obtained through slight transformation according to the automatic control condition of a water plant.

Description

technical field [0001] The invention belongs to the field of sewage treatment technology and energy-saving and consumption-reducing control, and in particular relates to an aeration and carbon source dosing optimization control method for a mud film composite sewage treatment process. Background technique [0002] Sewage treatment plants are a key part of eliminating black and odorous water bodies in cities and towns. With the popularization of the first-level A standard in the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB 18918-2002), and the overall transformation of urban sewage treatment from scale growth to quality improvement and efficiency enhancement, it is also faced with operational energy consumption and Increase in dosing consumption. [0003] Adding suspended fillers to aerobic tanks is one of the more commonly used methods for upgrading sewage treatment plants. Microbes can attach to the filler to form a biofilm, and together with the ...

AI Technical Summary

Problems solved by technology

In view of the high energy consumption of aeration in sewage treatment plants, the high cost of adding carbon sources, and the increase in the carbon footprint of sewage treatment plants, a combination of data simulation analysis and process parameter evaluation is adopted to establish a system from "on-demand aeration control" to " Carbon source dosing reduction control" control system aims to optimize the aeration system and carbon source dosing system of sewage biological treatment process, and realize the reduction and optimization of aeration and carbon source dosing

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