Patent AU-2021106591-A4 (AU)
Title: Method And System For Calculating A Dynamic Water Environment Capacity Of A Basin Based On River Lake Water Quality Limit
Inventor: XIA RUI
IPC: G06Q50/26
Filed: 2021-08-23
Granted: 2021-11-18
Abstract: The present invention discloses a method and system for calculating a dynamic water 
environment capacity of a basin based on river-lake water quality limit, the method 
comprises: establishing a basin distributed hydrological model based on basic data, coupling 
the basin distributed hydrological model with a flow rate and velocity conversion model, a 
pollutant load allocation model and a one-dimensional water quality model to obtain a basin 
distributed water quantity and quality model, and using the basin distributed water quantity 
and quality model to calculate export water quality concentrations of the respective flow 
production confluence units; establishing a river-lake water quality response model by using 
the basic data, and calculating water quality limit for rivers flowing into a lake that meets a 
lake water quality standard; calculating dynamic water environment capacities of the 
respective flow production confluence units and of the entire basin according to the export 
water quality concentrations of the respective flow production confluence units and the water 
quality limit for rivers flowing into a lake, thereby improving the calculation precision of 
water environment capacity of a basin, for fine management and control of river pollution.
Drawings 
acquiring basic data of the to-be-calculated basin, the basic data comprising geospatial data, pollutant 
source data, water quality monitoring data, hydrological data, and meteorological data 
dividing the basin into a plurality of flow production confluence units according to the geospatial data S2 
and the meteorological data, establishing a basin distributed hydrological model based on the basic data, 
and calibrating the basin distributed hydrological model according to observed flow rate data until the 
basin distributed hydrological model meets precision requirements 
coupling the basin distributed hydrological model with a one-dimensional water quality model by using 
a predefined conversion model to obtain a basin distributed water quantity and quality model, calibrating 
the basin distributed water quantity and quality model according to observed water quality data until the 
basin distributed water quantity and quality model meets precision requirements, and using the basin 
distributed water quantity and quality model to calculate export water quality concentrations of the 
respective flow production confluence units 
establishing a river-lake water quality response model by using the basic data, calibrating the river-lake S4 
water quality response model according to observed preselected river-lake water quality data until the 
river-lake water quality response model meets precision requirements, and using the river-lake water 
quality response model to calculate water quality limit for rivers flowing into a lake that meets a lake 
water quality standard 
calculating dynamic water environment capacities of the respective flow production confluence units S5 
and the dynamic water environment capacity of the basin according to the export water quality 
concentrations of the respective flow production confluence units and the water quality limit for rivers 
flowing into a lake 
FIG. 1 
Ri1CRi IWp 
Qi-1, Ci-1 Qi, Ci 
FIG. 2 
1/6