Optimization design method of sewage treatment plant A2/O process

A technology of sewage treatment plant, optimized design, applied in general water supply saving, electrical digital data processing, special data processing applications, etc., can solve problems such as not being optimized.

Active Publication Date: 2010-07-14
TONGJI UNIV
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  • Application Information

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Problems solved by technology

Due to the combination of the mathematical model, the trial algorithm enables the process parameter design to be gradually and slightly optimized on the basis of traditional design calculations, and the technical relia

Method used

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  • Optimization design method of sewage treatment plant A2/O process
  • Optimization design method of sewage treatment plant A2/O process
  • Optimization design method of sewage treatment plant A2/O process

Examples

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Embodiment 1

[0075] Example 1: Design a sewage plant in East China with a flow rate of 570,000 m 3 / d, use A 2 / O process. It covers an area of ​​about 29.66ha, and the working water temperature is 15°C; the influent and effluent water quality requirements are shown in Table 2, and the first-class B standard in the comprehensive sewage discharge standard (GB18918-2002) is used as the design effluent standard, and the model components are converted to conventional influent indicators The typical classification standard of the International Water Quality Association is adopted.

[0076] Table 2A Conventional Influent Index of Sewage Plant (mg / l)

[0077]

[0078] Firstly, establish the cost objective function of A sewage plant, namely:

[0079] f = ω 1 ( a 1 V 1 b 1 + ...

Embodiment 2

[0101] Example 2: Design a sewage plant in South China, covering an area of ​​11.6ha, which was completed and put into operation in 1996. It mainly treats the urban sewage intercepted by the urban drainage system in this area. The treatment process is typical A 2 / O method, the treated sewage is discharged into the nearby natural water body. The project processing scale is 150,000 m 3 / d, the design hour average flow rate is 4167m 3 / h. The design total variation coefficient is K=1.1, the working water temperature of the sewage plant is 20°C, and the requirements for influent and effluent water quality indicators are shown in Table 4, and the first-class B standard in the comprehensive sewage discharge standard (GB18918-2002) is used as the design effluent standard.

[0102] Table 4 Conventional water inflow index of B sewage plant (mg / l)

[0103]

[0104] First, establish the cost objective function of B sewage plant, namely:

[0105] f = ...

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Abstract

The invention belongs to the technical field of the environmental protection, and in particular relates to an optimization design method of sewage treatment plant A2/O process. According to the weaknesses of the prior sewage treatment plant A2/O process that the traditional design method has high basic construction expense, high running expense and the like, the optimization design method adopts an active mud 2D model as a mechanism to respectively carry out the model construction of three biological reaction tanks (anaerobic tank, anoxic tank and an aerobic tank) and a sedimentation tank so as to establish an optimization design model of the sewage treatment plant and to optimize the design parameters in the A2/O process, a mantlab language is used for programming a program main body, and 1stOpt software is adopted to carry out the final solving so as to obtain the design results of different parameters. Compared with the traditional design method, the optimized design method facilitates the appropriate dereferencing of each design parameter of the sewage treatment plant; therefore, on the premise that the outlet water quality is satisfied, the construction and running cost of the sewage treatment plant is reduced. The optimization design method is applicable to the design of a new sewage treatment plant and to the running management of a built sewage treatment plant.

Description

technical field [0001] The invention belongs to the field of environmental protection, in particular to a sewage treatment plant A 2 / O process optimization design method. Background technique [0002] In recent years, with the development of my country's economy and society and the continuous improvement of the level of urbanization, the problem of water pollution has become increasingly prominent, and the problem of sewage treatment has become very urgent and prominent. The demand for additional sewage treatment plants in various places has also become stronger and stronger. The construction cost of the sewage plant and the operating cost after completion have become the main problems to be faced in the expansion. Under the condition of ensuring that the effluent water quality meets the demand, reducing the cost input has become an important goal of the sewage plant construction. [0003] At present, in our country, more than 80% of urban sewage plants are designed by th...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02A20/152
Inventor 周雪飞张亚雷胡茂冬蒋明苏鸿洋
Owner TONGJI UNIV
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