Water Treatment Agent Aluminum Sulfate HG 2227-2004

Author: Chemical Industry Press
Publisher:
Publish Date: 2005-06-01
Features: The technical indicators of Class I products in this standard are mandatory, while the indicators of Class II products and other provisions are recommended. This standard was revised from the non-equivalent adoption of the Japanese Industrial Standard JISK 1450:1996 "Aluminum Sulfate for Drinking Water" to the mandatory chemical industry standard HG 2227-1991 "Water Treatment Agent Aluminum Sulfate." The main technical differences between this standard and JISK 1450:1996 "Aluminum Sulfate for Drinking Water" are:
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This standard classifies aluminum sulfate products into two categories: drinking water and industrial water, and wastewater.
The testing methods for heavy metals have been changed.
The main technical differences between this standard and HG 2227-1991 are:
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The original classification and grading of solid products have been canceled.
Aluminum sulfate products are divided into Class I and Class II.
Hg, Cr, and Cd indicators have been added to Class I products.
This standard will take effect simultaneously with the replacement of HG 2227-1991 upon implementation.
This standard was proposed by the China Petroleum and Chemical Industry Association.
The Technical Committee of the National Chemical Standardization of Water Treatment Agents is responsible for interpreting this standard.
This standard was first published in 1991.