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Water quality soft sensor and water eutrophication evaluation method based on wasp model

A technology of water body eutrophication and evaluation method, applied in the field of environmental engineering, can solve the problems such as the failure of real-time measurement of water quality indicators and the uncertainty of eutrophication evaluation methods.

Active Publication Date: 2020-10-20
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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Problems solved by technology

[0004] In order to solve the problem that the existing water quality index fails to realize real-time measurement and the uncertainty of the eutrophication evaluation method, the present invention proposes a water quality soft measurement and water eutrophication evaluation method based on the WASP model. Provide theoretical support for further prediction or evaluation of trophic status

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  • Water quality soft sensor and water eutrophication evaluation method based on wasp model
  • Water quality soft sensor and water eutrophication evaluation method based on wasp model
  • Water quality soft sensor and water eutrophication evaluation method based on wasp model

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Embodiment 1

[0075] The experimental data comes from the data of a monitoring point in Taihu Lake, including DO, BOD, Ch-a, TN, NH 3 -Actually measured concentration values ​​of water quality indicators such as N and total phosphorus (TP), one set of data per day, including a total of 336 sets of data. Applying the method provided by the invention to carry out water quality soft measurement and water body eutrophication evaluation, the specific steps are as follows:

[0076] Step 1: Establish a water quality soft sensor model based on the WASP model:

[0077] According to the water quality index monitoring point data of Taihu Lake, a soft sensor model of Taihu Lake water quality based on WASP model is constructed.

[0078] Step 2. Model parameter estimation based on UKF:

[0079] Due to the limitation of monitoring data, TN concentration value was used instead of NO 3 -N data, combined with existing DO, BOD, Phyt and NH 3 -N data, the observation matrix can be set as:

[0080]

[0...

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Abstract

The invention discloses a water quality measurement and water body eutrophication evaluation method based on a WASP model, and belongs to the technical field of environment engineering. The method includes steps of firstly, building a water quality soft measurement model based on the WASP model; estimating an unknown parameter of the water quality soft measurement model by combining with UKF, so as to improve the accuracy of the water quality soft measurement model; then performing eutrophication evaluation on the water body by means of an improved fuzzy comprehensive evaluation method so as to further verify the effectiveness of the water quality soft measurement model. The water quality measurement and water body eutrophication evaluation method can solve the problem that the water quality index cannot measure online, improve the accuracy of the water quality soft measurement model while acquire real-time evaluation result, and improve the accuracy of the eutrophication evaluation.

Description

technical field [0001] The invention relates to a water quality soft measurement method and a water body eutrophication evaluation method based on the WASP model, belonging to the technical field of environmental engineering. Specifically, on the basis of in-depth study of the WASP mechanism model, the unknown parameters in the model are estimated by Unscented Kalman Filter (UKF), so as to construct a fusion water quality soft measurement method, and finally use the improved fuzzy comprehensive evaluation method to Eutrophication assessment of water body status. Background technique [0002] With the rapid development of industrial science and technology in modern society, industrial and domestic sewage is increasing day by day, and the phenomenon of eutrophication in lakes and reservoirs is becoming more and more serious. Nitrogen and phosphorus are the main reasons for the aggravation of eutrophication in slow-flowing water bodies such as lakes and reservoirs. At present,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06N7/02G01N33/18
CPCG01N33/18G01N33/1806G01N33/186G01N33/188G06F30/20G06N7/02Y02A20/152
Inventor 王小艺赵峙尧贾洁许继平苏婷立王立张慧妍
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY