T/CHIDA 203.3-2021 Active Group standards

T/CHIDA 203.3-2021 Classification and grading standards for environmental dredging and contaminated soil in inland lakes and reservoirs

Publish Date: 2021-06-30 Implement Date: 2021-07-01 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/CHIDA 203.3-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Environmental protection

ICS Name: Pollution, pollution control, and protection

Publish Date: 2021-06-30

Implement Date: 2021-07-01

Scope

Main technical content: 1. Environmental dredging and classification of polluted soils. Based on nutrient salts, heavy metals, toxic and harmful organic substances, as well as the types of compound pollution and their impact pathways, the dredged polluted soils are categorized into: nutrient salt-contaminated soils, heavy metal-contaminated soils, toxic and harmful organic substance-contaminated soils, and compound-contaminated soils. 2. Research on pollution grading of environmental dredging polluted soils. Based on the Nemerow pollution index and evaluation standards, the pollution degree of the polluted soils is classified; based on the Hakanson ecological risk index method, the ecological risk degree of sediment pollutants is classified; and the toxic and harmful organic substance pollution level is classified using the biological toxicity index method.