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Process method for treating recycled water recycling high-concentration-ratio circulating water

A technology with high concentration ratio and treatment process, which is applied in the field of high concentration ratio circulating water treatment process for reclaimed water reuse, can solve the problems of aggravating microbial growth in the system, equipment corrosion, and suspended solids sedimentation

Active Publication Date: 2012-06-13
CNOOC TIANJIN CHEM RES & DESIGN INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When reclaimed water is reused in the circulating cooling water system, it will aggravate the problems of microbial growth, equipment corrosion, and suspended solids in the system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Corrosion and scale inhibitors are prepared according to the following weight percentages:

[0023] Polyaspartic acid 20%, 2-phosphonic acid butane 1,2,4-tricarboxylic acid 20%, acrylic acid / hydroxypropyl acrylate / maleic anhydride / 2-acrylamide-2-methylpropane Put 25% sulfonic acid tetrapolymer and 1% benzotriazole in an airtight or pressure vessel, under stirring conditions, control the reaction temperature in the range of 40-70°C, control the pressure at 0.1Mpa, add sodium gluconate 2%, 2% ethylenediaminetetraacetic acid, stir evenly, then add 10% zinc sulfate, 20% water, keep at 40-70°C, stir evenly until completely dissolved, to obtain light yellow or colorless product suitable for reclaimed water Corrosion and scale inhibitor with high concentration ratio.

Embodiment 2

[0025] Corrosion and scale inhibitors are prepared according to the following weight percentages:

[0026] Polyaspartic acid 25%, 2-phosphonic acid butane 1,2,4-tricarboxylic acid 25%, acrylic acid / hydroxypropyl acrylate / maleic anhydride / 2-acrylamide-2-methylpropane Put 20% sulfonic acid tetrapolymer and 1.5% benzotriazole in an airtight or pressure container, under stirring conditions, control the reaction temperature in the range of 40-70°C, control the pressure at 0.1Mpa, add sodium gluconate 5%, 2% ethylenediaminetetraacetic acid, stir evenly, then add 12% zinc sulfate, 9.5% water, keep at 40-70°C, stir evenly until completely dissolved, and obtain a light yellow or colorless product suitable for reclaimed water Corrosion and scale inhibitor with high concentration ratio.

Embodiment 3

[0028] Prepare the bactericide and algicide by the following weight percentages:

[0029] Put 10% of the organic guanidine polymer compound in a closed or pressure vessel, under stirring conditions, control the reaction temperature in the range of 40-50°C, control the pressure at 0.1Mpa, add 10% of isothiazolinone and 2% of copper nitrate, Stir evenly, then add 10% sodium bromide and 68% water, keep at 40-50°C, stir evenly until completely dissolved, and obtain a yellow-green bactericide and algicide suitable for reuse of reclaimed water with high concentration ratio.

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Abstract

The invention discloses a process method for treating recycled water recycling high-concentration-ratio circulating water. The process method is characterized in that: a corrosion and scale inhibitor and an antisepsis algicide for a recycled water recycling circulating water system are applied to an industrial circulating cooling water system, and circulating water is replenished into recycled water. The corrosion and scale inhibitor and the antisepsis algicide for recycling recycled water are added into water, so that circulating water is naturally concentrated, and stable running at the concentration factor of 5 times can be realized. A high-concentration-factor circulating water treatment process method is implemented, so that high-concentration-factor stable running of industrial circulating cooling water is realized.

Description

technical field [0001] The invention belongs to the technical field of circulating cooling water treatment, and in particular relates to a high concentration rate circulating water treatment process for reclaimed water reuse. It includes a preparation method of a corrosion and scale inhibitor suitable for reclaimed water reuse with high concentration ratio, a preparation method of high-efficiency broad-spectrum bactericide and algicide suitable for reclaimed water reuse with high concentration ratio, and a combination of the two Water treatment process of high concentration ratio circulating cooling water system applied to industrial cooling water system. Background technique [0002] Reclaimed water is mainly non-drinking water that can be reused within a certain range after urban sewage or domestic sewage has been treated to meet certain water quality standards. All countries in the world attach great importance to the reuse of reclaimed water, and the reclaimed water in ...

Claims

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Application Information

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IPC IPC(8): C02F5/14C02F5/10
Inventor 衣龙欣马景辉赵卫东韩强王宏李丽萍李萍
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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