Compound scale inhibitor for treating recirculated cooling water and preparation method thereof

Abstract

The invention discloses a compound scale inhibitor for treating recirculated cooling water and a preparation method thereof. The scale inhibitor consists of polyaspartic acid and three or more HEDP, AThe invention discloses a compound scale inhibitor for treating recirculated cooling water and a preparation method thereof. The scale inhibitor consists of polyaspartic acid and three or more HEDP, Ahe formula cannot cause eutrophication pollution to the environment, and the compound scale inhibitor belongs to an environment-friendly product and is particularly suitable for the treatment of rec the formula cannot cause eutrophication pollution to the environment, and the compound scale inhibitor belongs to an environment-friendly product and is particularly suitable for the treatment of recirculated water with high calcium hardness and high alkali hardness.irculated water with high calcium hardness and high alkali hardness.TMP, SHMP, PESA, and PAPE, wherein the PASP is between 10 and 25 mg / L, the HEDP is between 1 and 10 mg / L, the ATMP is between 1 and 5 mg / L, the PESA is between 1 and 10 mg / L, the SHMP is between 1 andTMP, SHMP, PESA, and PAPE, wherein the PASP is between 10 and 25 mg / L, the HEDP is between 1 and 10 mg / L, the ATMP is between 1 and 5 mg / L, the PESA is between 1 and 10 mg / L, the SHMP is between 1 and5 mg / L, and the PAPE is between 1 and 5 mg / L. During the preparation of the compound scale inhibitor, the polyaspartic acid is added first, and then other materials are added into the polyaspartic ac 5 mg / L, and the PAPE is between 1 and 5 mg / L. During the preparation of the compound scale inhibitor, the polyaspartic acid is added first, and then other materials are added into the polyaspartic acid; the heating temperature is between 60 and 80 DEG C, the stirring speed is 300 r / m, and the pH value is between 8.1 and 10.2; and the obtained product is kept stand for 1 to 6 hours. The compound sid; the heating temperature is between 60 and 80 DEG C, the stirring speed is 300 r / m, and the pH value is between 8.1 and 10.2; and the obtained product is kept stand for 1 to 6 hours. The compound scale inhibitor has excellent scale-inhibiting property and belongs to a low phosphorous formula, the formation rate of calcium phosphate scale is extremely low during the use, wastewater discharged bycale inhibitor has excellent scale-inhibiting property and belongs to a low phosphorous formula, the formation rate of calcium phosphate scale is extremely low during the use, wastewater discharged byt

Description

Composite scale inhibitor for treating circulating cooling water and preparation method thereof technical field The invention relates to a green water treatment agent, in particular to a compound scale inhibitor for treating circulating cooling water and a preparation method thereof, belonging to the technical field of industrial water treatment. Background technique From the requirements of environmental protection and sustainable development, "greening" is undoubtedly an important trend in the development of water treatment agents in the 21st century. In industry, industrial circulating cooling water is a large water user. Whether it is chemical industry, metallurgy, thermal power generation or large-scale central air conditioning, circulating water is used for heat exchange. Therefore, improving the use efficiency of industrial or civil circulating water will save water resources and reduce Production costs and enhanced environmental protection are of great significance...

AI Technical Summary

Problems solved by technology

However, most of the water treatment agents commonly used in the industry contain phosphorus. In order to avoid secondary pollution caused by water treatment agents to the environment, research on new green water treatment agents has become a trend.