GB/T 15456-2019 Active National standards

GB/T 15456-2019 Determination of the chemical oxygen demand in industrial circulating cooling water—Permanganate index method

Publish Date: 2019-08-30 Implement Date: 2020-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 15456-2019

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for water treatment agents

ICS Name: Chemical analysis

Publish Date: 2019-08-30

Implement Date: 2020-07-01

Pages: 5 pages

Scope

This standard specifies the method for determining the chemical oxygen demand (COD) in industrial circulating cooling water using the permanganate index method.
This standard is applicable to the determination of chemical oxygen demand (CODMn) in industrial circulating cooling water with a content of 0.5 mg/L to 10 mg/L (calculated as O2). Among them, the volumetric method is suitable for the determination of CODMn ranging from 2 mg/L to 10 mg/L (calculated as O2); the potentiometric titration method is suitable for the determination of CODMn ranging from 0.5 mg/L to 10 mg/L (calculated as O2). If the concentration exceeds the upper limit of the range, it can be diluted and measured afterwards.
This standard is also applicable to the determination of chemical oxygen demand (CODMn) in raw water, boiler water, and recycled water.