Wetland substrate combination and evaluation method based on hydraulic performance

Through the wetland matrix combination evaluation method based on hydraulic performance, the comprehensive performance index is calculated using wetland model and tracer experiments, and the problems of poor objectivity and low economicity of matrix combination evaluation methods in the prior art are solved, and a fast and accurate evaluation of the advantages and disadvantages of matrix combination is achieved.

CN119707118AActive Publication Date: 2025-03-28HOHAI UNIV
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Patent Information

Application Number
CN202411887475.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-28
Estimated Expiration
2044-12-20

AI Technical Summary

Technical Problem

In the prior art, the evaluation method of matrix combination is susceptible to operating conditions and pollutant concentration, has poor objectivity and low economicality, making it difficult to choose the optimal matrix combination.

Method used

The wetland matrix combination evaluation method based on hydraulic performance is adopted. By establishing a wetland model, using tracer experimental methods to test hydraulic performance, drawing a residence time distribution curve, and calculating multiple hydraulic performance indicators, and finally evaluating the advantages and disadvantages of the matrix with a comprehensive performance index.

Benefits of technology

This method can quickly and accurately evaluate the advantages and disadvantages of matrix combinations, reduce the dependence on operating conditions and pollutant concentration, improve the objectivity and economicality of the evaluation, and select the most practical and optimal combination.

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Abstract

The invention belongs to the field of constructed wetland water treatment, and particularly relates to a wetland substrate combination and evaluation method based on hydraulic performance, a combined substrate is used for establishing a wetland model, a tracer experiment method is used for testing the hydraulic performance of the substrate, and a retention time distribution curve is drawn; calculating the average hydraulic retention time, the effective volume ratio, the water flow dispersion degree, the standard flow dispersion and the hydraulic efficiency on the basis of the retention time distribution curve; and performing weighted calculation on the effective volume ratio, the water flow dispersion degree, the standard flow dispersion degree and the hydraulic efficiency according to weights to obtain a comprehensive performance index, and evaluating the advantages and disadvantages of the matrix according to the comprehensive performance index. The data of the method are easy to obtain, the result can be quickly output, and the feasibility is high.
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