T/CAQI 149-2020 Active Group standards

T/CAQI 149-2020 Town water supply integrated toxicity online monitoring instrument technical specification (fish behavior method)

Publish Date: 2020-12-30 Implement Date: 2021-03-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CAQI 149-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Environmental protection sampling and analysis testing methods

ICS Name: Other standards related to water quality

Publish Date: 2020-12-30

Implement Date: 2021-03-30

Scope

Scope: This standard specifies the performance requirements, technical requirements, and operation and maintenance of the online monitoring instrument for comprehensive toxicity in urban water supply using image analysis and sensor methods (fish behavior method). This standard applies to the performance testing, operation, and maintenance of the online monitoring instrument for comprehensive toxicity in urban water supply using the fish behavior method. Main technical content: 4.1 Image analysis method: Establish the correlation between the number of live fish, individual behavior (speed, height, number of turns), and group behavior (dispersion, fractal dimension, average distance) of a certain number of test fish and water quality characteristics, and use the comprehensive index of behavioral parameters to analyze the comprehensive toxicity of water quality. The theoretical value of the comprehensive index of behavioral parameters ranges from 0 to 100. A value of 100 to 60 indicates normal water quality, a value of 60 to 30 indicates mildly polluted water quality, and a value of 30 to 0 indicates severely polluted water quality. 4.2 Sensor method: Establish the correlation between the behavioral intensity of test fish indicated by the current signal and water quality characteristics, and use the comprehensive index of behavioral intensity to analyze the comprehensive toxicity of water quality. The theoretical value of the comprehensive index of behavioral intensity ranges from 0 to 100. A value of 0 to 75 indicates safe water quality, and a value of 75 to 100 indicates water quality in a polluted state. The higher the value, the greater the degree of water pollution and the higher the comprehensive toxicity.