GB/T 21796-2022 Active National standards

GB/T 21796-2022 Chemicals—Activated sludge respiration inhibition test

GB/T 21796-2022 Chemicals—Activated sludge respiration inhibition test

Publish Date: 2022-07-11 Implement Date: 2023-02-01 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: GB/T 21796-2022

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Logo, packaging, transportation, storage

ICS Name: \nProtection against dangerous goods

Publish Date: 2022-07-11

Implement Date: 2023-02-01

Pages: 17 pages

Scope

This document specifies the information on the test substances, the test principle, the reference substances/reagents, the test methods, the test procedures, quality assurance and quality control, and data and reports for the respiration inhibition test of activated sludge in chemical substances. This document is applicable to evaluating the impact of chemicals that are easily soluble in water, difficult to dissolve in water, easily adsorbed, and volatile on the organic carbon oxidation process and nitrification of microorganisms in activated sludge in biological wastewater treatment plants.

Development Information

Word Count: 34 Thousand words Pages: 17 pages

Replace the following standards

GB/T 21796-2008 Chemicals—Activated sludge,respiration inhibition test

Referenced Standards

OECD化学品测试导则 No.104 OECD化学品测试导则 No.316 GB/T 21845-2008 Chemicals—Water solubility test GB/T 21851-2008 Chemicals—Adsorption-desorption using a batch equilibrium method GB/T 21852-2008 Chemicals—Partition coefficient(n-octanol/water)—High performance liquid chromatography(HPLC)method GB/T 21853-2008 Chemicals—Partition coefficient(n-octanol/water)—Shake flask method GB/T 21855-2008 Chemicals—Test of hydrolysis as a function of pH GB/T 22052-2008 Test method for vapor pressure-temperature relationship and initial decompostition temperature of liquids by isoteniscope GB/T 22228-2008 Chemical products for industrial use—Determination of vapour pressure of solids and liquids in the rang 10 -1 to 10 5 Pa—Static method GB/T 22229-2008 Chemical products for industrial use—Determinaton of vapour pressure of solids and liquids at range 10 -3 to 1 Pa—Vapour pressure balance method GB/T 21852-2025 Chemicals—Partition coefficient (n-octanol/water)—High performance liquid chromatography (HPLC)method

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