Soft sensing method of out-of-water TP (total phosphorus) for sewage treatment based on reservoir network

A technology for effluent total phosphorus and sewage treatment, which is applied in the fields of control science and engineering, environmental science and engineering, and can solve the problems of difficult real-time detection of effluent total phosphorus TP, so as to improve the level of real-time monitoring, ensure accuracy, and realize real-time prediction. Effect

Active Publication Date: 2017-10-13
JILIN UNIV
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Problems solved by technology

[0005] The invention obtains a soft measurement method of total phosphorus TP in sewage treatment effluent based on the storage pool network, and solves the problem that the total phosphorus TP in the effluent is difficult to detect in real time in the process of urban sewage treatment

Method used

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  • Soft sensing method of out-of-water TP (total phosphorus) for sewage treatment based on reservoir network
  • Soft sensing method of out-of-water TP (total phosphorus) for sewage treatment based on reservoir network
  • Soft sensing method of out-of-water TP (total phosphorus) for sewage treatment based on reservoir network

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Embodiment Construction

[0056] Taking the daily report of water quality analysis of a certain year in a sewage treatment plant in Beijing as an example below, the realization of this example includes four steps:

[0057] 1. Data preprocessing and determination of auxiliary variables.

[0058] Collect the actual water quality parameter data of the sewage treatment plant, denoise the data, and eliminate abnormal data. After normalization, the remaining 360 sets of available data are divided into three parts: 180 sets of data are used as training samples, 90 sets of data are used as test samples, and the remaining 90 sets of data are used as test samples. Auxiliary variables with strong correlation with effluent total phosphorus TP were selected by principal component analysis. Finally, the total phosphorus TP of the influent water, the temperature of the effluent water T, the dissolved oxygen DO in the aerobic front stage, the oil in the water, the oil in the effluent, and the ammonia nitrogen NH in t...

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Abstract

The invention belongs to the field of control science and engineering, belongs to the field of environmental science and engineering, and relates to a soft sensing method of out-of-water TP (total phosphorus) for sewage treatment based on a reservoir network. Out-of-water TP concentration is an important monitoring index for urban sewage treatment plants and important index for water quality evaluation. In order to solve the problems, for example, out-of-water TP measurement process in current sewage treatment is complex, instrumentation and equipment are high in manufacture cost and high in maintenance cost and measurement results accuracy is low, the method of the invention employs principal component analysis to determine input variables of a soft sensing model; a reservoir structure optimizing algorithm based on contribution rate is designed, network structure is optimized, and network performance is improved; a soft sensing model of out-of-water TP is established based on a modified reservoir network to provide quick, effective and accurate measurement of out-of-water TP in sewage treatment, the level of real-time water quality monitoring is increased for urban sewage treatment plants, and normal treatment of urban sewage is guaranteed.

Description

technical field [0001] Based on the biochemical reaction characteristics of urban sewage treatment, the invention utilizes a reserve pool network to establish a soft measurement model of TP in urban sewage treatment process, and realizes the real-time measurement of TP in effluent. The real-time measurement of effluent total phosphorus TP is an important basis for realizing optimal control of sewage treatment, and is also an important part of water environment protection. The present invention belongs to the field of control science and engineering, and also belongs to the field of environmental science and engineering. Background technique [0002] The national "Thirteenth Five-Year Plan" pointed out that to achieve full coverage and stable operation of urban domestic sewage treatment facilities, by the end of 2020, the urban sewage treatment rate will reach the overall goal of 95%, and pointed out that areas with serious water pollution should implement total phosphorus Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG06F2219/10G16C20/30G16C20/70
Inventor 刘富李丁园姜守坤侯涛康冰
Owner JILIN UNIV
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