Accurate calculation method of total phosphorus flux in lake

By constructing a three-dimensional coupled numerical model of lake hydrodynamics and water quality and a dynamic targeted monitoring system, combined with a two-way LSTM inversion model and flux balance closed-loop verification, the problem of total phosphorus flux calculation under complex flow fields in lakes was solved, achieving accurate total phosphorus flux calculation and data support.

CN122113666BActive Publication Date: 2026-06-26HEFEI UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Filing Date
2026-04-21
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies cannot adapt to the complex flow field of lake wind-driven flow and throughput flow coupling, making it difficult to distinguish the ineffective flux of the lake circulation. Furthermore, the inversion model has weak generalization ability in lake scenarios, making it difficult to guarantee the accuracy and comprehensiveness of the calculation results.

Method used

A three-dimensional hydrodynamic and water quality coupled numerical model of lakes was constructed to distinguish between effective and ineffective fluxes. A dynamic targeted monitoring system was established, and a two-way LSTM inversion model was adopted to construct a total phosphorus concentration inversion model. Combined with a flux balance closed-loop verification mechanism, the accurate calculation of total phosphorus flux was achieved.

Benefits of technology

It significantly improves the rationality and data validity of total phosphorus flux accounting in lakes, enhances the stability and accuracy of total phosphorus concentration inversion, and can comprehensively reflect the sources and destinations of total phosphorus, providing precise data support for the prevention and control of eutrophication in lakes.

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Abstract

The application discloses a kind of lake total phosphorus fluxes precision accounting method, the application relates to water quality monitoring technical field, constructs three-dimensional water power and water quality coupling model and divides effective and invalid flux, combined with dynamic targeting monitoring, two-way LSTM inversion and closed loop check, realize the precision adaptation accounting of lake total phosphorus fluxes, solve the scene adaptation defect of traditional river method, the advantages of the application are that: by constructing lake three-dimensional water power and water quality coupling numerical model and carrying out total phosphorus whole path tracking, effective flux and invalid flux are accurately divided, dynamic targeting monitoring system is replaced by traditional fixed point arrangement mode simultaneously, effectively solve the core defects that existing river type accounting method cannot adapt to lake complex flow field, it is difficult to distinguish lake internal circulation invalid flux, monitoring data is not representative, avoid flux repeated calculation and mistake problem, improve the matching degree of monitoring data on lake total phosphorus migration and transformation law.
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