Phosphorus-free composite scale and corrosion inhibitor and application thereof as well as circulating water treatment method

Abstract

The invention discloses a phosphorus-free composite scale and corrosion inhibitor and application thereof as well as a circulating water treatment method. The phosphorus-free composite scale and corrosion inhibitor comprises a scale inhibitor, a dispersing agent, an organic phosphorus-free corrosion inhibitor and a manganese salt, wherein the scale inhibitor consists of polyaspartic acid and/or polyepoxysuccinic acid; the weight ratio of the scale inhibitor to the dispersing agent to the organic phosphorus-free corrosion inhibitor to the manganese salt is 1:(0.2-10):(0.5-100):(0.025-1); the weight of the manganese salt is calculated according to manganese ions. The phosphorus-free composite scale and corrosion inhibitor and a non-oxidizing bactericide, particularly isothiazolinone, have a good synergistic effect, a sterilizing effect of the non-oxidizing bactericide can be obviously improved, and the fast sterilization and long drug effect time are reflected. In addition, the phosphorus-free composite scale and corrosion inhibitor is environment-friendly, has phosphorus-free and nitrogen-free characteristics and meets the green and environment-friendly requirements, and the environmental burden is lightened. Moreover, the phosphorus-free composite scale and corrosion inhibitor is wide in water quality application range and is easy to popularize and apply.

Description

technical field [0001] The invention relates to a phosphorus-free composite scale and corrosion inhibitor and its application and a treatment method for circulating water, in particular, to a phosphorus-free composite scale and corrosion inhibitor and its application in circulating water treatment and the use of the non-phosphorus A circulating water treatment method for a phosphorus composite scale and corrosion inhibitor. Background technique [0002] Water is the basic condition for human survival, but water resources in the world are limited. my country's per capita water volume is only a quarter of the world's per capita water volume, and water resources are even poorer. With the rapid development of industry, the ecological balance of water has been seriously damaged. In order to solve the water resource crisis and adapt to sustainable development, it is necessary to save water reasonably. The amount of cooling water in industrial water accounts for 60-80% by weight...

AI Technical Summary

Problems solved by technology

[0005] In the treatment process of circulating water, it is necessary to add a bactericide while adding a scale and corrosion inhibitor to inhibit the growth of microorganisms in the circulating water, but when using the above-mentioned s...

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