System for water quality reference prediction of fresh water organisms

Abstract

The invention discloses a system for water quality reference prediction of fresh water organisms, and the system comprises a water quality reference pollutant determining module, a data collection and screening module, a data evaluation module, a kind screening module, a water quality reference deducing module and a water quality reference checking module. The water quality reference deducing module comprises a toxicity data distribution verification module, a cumulative probability calculating module, a model fitting and evaluation module, a water quality reference extrapolation module and a water quality reference result description module. The model fitting and evaluation module employs a logistic distribution model, a normal distribution model or an extreme value distribution model for data fitting, obtains an SSD (species sensitivity distribution), and respectively evaluates the fitting degrees of the models according to the fitting goodness-of-fit evaluation parameters of the models. The water quality reference extrapolation module employs the concentration HC5 corresponding to the cumulative probability of 5% on the SSD curve to divide an evaluation factor, and determines a final fresh water organism water quality reference.

Description

technical field [0001] The invention relates to the technical field of water quality benchmark prediction, in particular to a system for water quality benchmark prediction of freshwater aquatic organisms. Background technique [0002] The water quality standard refers to the maximum dose or level at which pollutants or harmful factors in the water environment do not have harmful effects on human health, water ecosystems and use functions. Freshwater quality criteria for the protection of aquatic organisms (freshwater quality criteria for the protection of aquatic organisms) refers to water quality criteria that can protect freshwater aquatic organisms and their ecological functions, including short-term water quality criteria and long-term water quality criteria. [0003] The water quality standard for aquatic organisms is the guarantee to protect the diversity of aquatic organisms and give full play to the ecological functions of aquatic organisms, and it is an important ba...

AI Technical Summary

Problems solved by technology

[0007] The methods used in the prior art for deriving water quality benchmarks for freshwater aquatic organisms are not suitable for individuals and units to build models for fitting the probability distribution of pollutant toxicity data required for water quality benchmark research and calculating the concentration of pollutants under specified cumulative probability conditions , does not have the function of outputting the test parameters of the goodness of fit of the model

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