An intelligent sewage treatment aeration control method with self-learning function

Abstract

The invention relates to an intelligent sewage treatment aeration control method with self-learning function. The method includes: preliminary selection of air-water ratio λ 0 =Q 气 / Q 水 , according to the actual water flow Q 水 , calculate the aeration rate Q required for sewage treatment 气 , adjust the air volume of the aeration blower so that the aeration volume Q 气 Meet the requirements; measure the actual dissolved oxygen value DO of the sewage after aeration treatment, and compare the actual dissolved oxygen value DO with the set dissolved oxygen value range to adjust the air volume of the aeration blower; after running the set time, get Cumulative inflow flow Q 总水 and cumulative aeration Q 总气 , so as to calculate the new air-water ratio λ 1 =Q 总气 / Q 总水 , the new gas-water ratio λ 1 Instead of the above air-water ratio λ 0 ; Step 4, cyclically repeating the above steps 1-step 3, so that the sewage can be aerated under the most reasonable air-water ratio conditions. While ensuring the quality of effluent water, the present invention avoids excessive aeration to the greatest extent, reduces energy consumption, and ensures stable and reliable operation of the biochemical treatment system.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an intelligent sewage treatment aeration control method with self-learning function. Background technique [0002] The activated sludge process has the largest number of sewage treatment processes and the most mature technology. The aeration system is the core equipment of the modified treatment process, accounting for 50-60% of the energy consumption of the entire sewage treatment. The amount of aeration is related to the flow of water (treated water) and water quality. In addition to using efficient aeration blowers, the energy saving of the aeration system also needs to control the amount of aeration. It is necessary to avoid the problem of substandard water output caused by insufficient aeration. It is also necessary to avoid the problem of energy waste caused by excessive aeration. At present, most sewage plants use it to increase or decrease the amount...

AI Technical Summary

Problems solved by technology

At present, most sewage plants use it to increase or decrease the aeration volume during regular inspections according to dissolved oxygen, or to realize automatic control according to the set dissolved oxygen, but the dissolved oxygen parameter has a large lag. In order to avoid insufficient aeration resulting in substandard water Generally, the set value of dissolved oxygen is much larger than the actual demand, and there is a certain degree of over-aeration

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