AAO process optimization operation method based on WEST model in sewage treatment plant

Abstract

The invention belongs to the technical field of sewage treatment process optimization, and particularly relates to an AAO process optimization operation method based on a WEST model in a sewage treatment plant. The method comprises the following steps: 1) performing investigation and survey to obtain various parameters in the sewage treatment plant; 2) performing a technological process and constructive simulation in the sewage treatment plant by using the WEST model; 3) based on the established WEST process simulation model of the sewage treatment plant, performing control strategy simulation, simulating optimization operation, and obtaining optimization operation parameters; 4) applying the optimization operation scheme to the sewage treatment plant to optimize sewage treatment process operation; and 5) in the optimization operation stage, monitoring quality of inlet and outlet water of a sewage treatment system, and adjusting operation parameters to realize energy saving and consumption reduction of sewage treatment. The method provided by the invention provides technical guidance for process optimization operation in a township sewage treatment plant, greatly reduces workload of experimental research, and reduces energy consumption of the sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment process optimization, in particular to an AAO process optimization operation method of a sewage treatment plant based on the WEST model. Background technique [0002] In recent years, the basic theory and treatment process of sewage treatment have become more and more mature, but the optimization control technology of sewage treatment process is still lagging behind. At present, the control level of sewage treatment plants in our country is relatively low, and most of them use simple manual control, and there is almost no application of optimal control methods. On the other hand, the management level of my country's sewage treatment plants is low, which affects the operating efficiency of the sewage treatment system to a certain extent, increases unnecessary waste of energy and human resources, and thus increases the cost of sewage treatment. [0003] WEST software is a powerful sewage t...

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Problems solved by technology

[0005] Chinese patent CN200910264136.2 records an optimal design method for the aeration rate of the AAO process. According to the empirical design method, the main parameters in the AAO process model are designed to overcome the defect that the design results of the pure mathematical model tend to be theoretical. It can effectively save more than 12% of aeration energy consumption and reduce system operating costs; however, this method is only aimed at the optimal design of the aeration volume of the aeration tank in the AAO process, which needs to be realized by introducing empirical formulas; and the main operating parameters of the AAO process include aeration The aeration rate of the air tank, the internal return rate, and the sludge return rate cannot realize the comprehensive optimized operation of the AAO process

[0006] Chinese patent CN 200910034948.8 records an optimal design method of AAO process reaction pool, which combines the advantages of empirical design method and mathematical simulation technology. The designed reaction pool can not only meet the requirements of national standards for pollutant removal, but also greatly Save the volume of the reaction pool and reduce infrastructure investment; but for the reaction pool that has been built, the optimal design method provided by this method needs to rebuild the volume of the AAO process reaction pool, which requires huge investment and affects the normal operation of the sewage treatment plant. run

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