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A method for monitoring the content of water treatment chemicals in a circulating water system

A circulating water system and chemical treatment technology, applied in measuring devices, material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems of difficult processing, single type, complicated synthesis steps, etc., and achieve high detection accuracy, accurate measurement, The effect of stable performance

Active Publication Date: 2021-07-27
YIKANG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the reports on fluorescent tracers are gradually increasing, most of them are benzene ring substances containing conjugated π bonds, and their synthesis steps are complicated, subsequent processing is difficult, and the type is single.

Method used

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  • A method for monitoring the content of water treatment chemicals in a circulating water system
  • A method for monitoring the content of water treatment chemicals in a circulating water system
  • A method for monitoring the content of water treatment chemicals in a circulating water system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 2.5G dendrimer products with ethylenediamine as the core, for scale inhibitor (polyepoxysuccinic acid): corrosion inhibitor (water-soluble benzotriazole): fungicide (dodecyl dimethyl benzyl ammonium chloride) according to the 1:1:1 mixed water treatment agent content monitoring by fluorescence method, the steps are as follows:

[0050] (1) Take 0.1 g of dendrimers with 2.5 g of ethylenediamine as the nucleus and 20 g of mixed water treatment agents, mix and dissolve them in a beaker at a ratio of 1:200, stir them evenly with magnetic force, transfer them into a 100 ml volumetric flask, and configure them as 500mg / L fluorescent label compound water treatment agent;

[0051] (2) Then configure 2.5G ethylenediamine as the core dendrimer concentration to be 0.1mg / L, 0.5mg / L, 1.0mg / L, 3.0mg / L, 5.0mg / L, 7.0mg / L, 9.0 mg / L solution at λ em / λ ex Fluorescence intensity was measured at the wavelength of =425 / 370, and a standard curve was drawn. With the continuous consumption...

Embodiment 2

[0053] 1.5G dendritic macromolecule products using diethylenetriamine as the core, for scale inhibitor (polyepoxysuccinic acid): corrosion inhibitor (water-soluble benzotriazole): fungicide (dodecyl dimethyl benzyl ammonium chloride) according to the 1:1:1 mixed water treatment agent content monitoring by fluorescence method, the steps are as follows:

[0054] (1) Take 0.1g of dendrimers with 1.5G diethylenetriamine as the core and 20g of mixed water treatment chemicals, mix and dissolve them in a beaker at a ratio of 1:200, stir them evenly by magnetic force, transfer them into a 100ml volumetric flask, and configure into a 500mg / L fluorescently labeled compound water treatment agent;

[0055] (2) Then configure 1.5G diethylenetriamine as the core dendrimer concentration to be 0.1mg / L, 0.5mg / L, 1.0mg / L, 3.0mg / L, 5.0mg / L, 7.0mg / L, 9.0mg / L solution, at λ em / λ ex Fluorescence intensity was measured at the wavelength of =475 / 420, and a standard curve was drawn. With the cont...

Embodiment 3

[0057] Using 2.5G ethylenediamine as the core dendrimers, 1.5G diethylenetriamine as the core dendrimers, according to 1:1, 1:1.2, 1:1.4, 1:1.6, 1:1.8, 1 :2 ratio is compounded and mixed to obtain a mixed-type dendrimer fluorescent tracer, for scale inhibitor (polyepoxysuccinic acid): corrosion inhibitor (water-soluble benzotriazole): bactericide ( Dodecyl dimethyl benzyl ammonium chloride) is carried out content monitoring by fluorescence method by the water treatment agent mixed 1:1:1, and the steps are as follows:

[0058] (1) Take 0.1 g of dendrimer mixed products of different ratios and 20 g of mixed water treatment chemicals, mix and dissolve them in a beaker at a ratio of 1:200, stir them evenly with magnetic force, move them into a 100ml volumetric flask, and configure them as 500mg / L fluorescent label compound water treatment agent;

[0059] (2) Then prepare a solution with a concentration of 0.1mg / L, 0.5mg / L, 1.0mg / L, 3.0mg / L, 5.0mg / L, 7.0mg / L, 9.0mg / L, and measure ...

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Abstract

The invention relates to a method for monitoring the content of water treatment chemicals in a circulating water system. The steps are as follows: mix and dissolve dendrimers and water treatment agents according to the mass ratio of 1:200, configure them into fluorescently labeled compound water treatment agents, and add them to the circulating water system; Fluorescence characteristics, choose the wavelength of 200‑600nm, measure the fluorescence intensity of the fluorescent tracer in the compound water treatment agent with different concentrations in circulating water with a fluorescence spectrophotometer, and draw a standard curve of fluorescence intensity and concentration; The standard curve of the water treatment agent is used to obtain the concentration of the water treatment agent. When the water treatment agent is lower than the minimum effective concentration value, the water treatment agent is added to the circulating water system in time. Beneficial effects: the tracer of the application has the characteristics of high detection accuracy and stable performance.

Description

technical field [0001] The invention relates to a method for monitoring the content of water treatment chemicals in a circulating water system. Background technique [0002] In response to the sustainable development strategy, circulating water for the purpose of saving water is widely used in industrial fields. In order to solve the problems of scaling, corrosion and fungal growth on the surface of circulating water equipment, it is usually achieved by adding a certain amount of scale inhibitors, corrosion inhibitors and fungicides. In order to obtain a good water treatment effect, in addition to the selection of high-efficiency chemicals, the key is to stabilize the concentration of the chemicals within the effective range. At present, the domestic circulating water system generally adopts artificial timing and uniform dosing, and obtains the effective value of the concentration of the chemical in the water through analysis, and adjusts the opening of the metering pump ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/643
Inventor 丁宇曲毅郝进伟张华巍王兆选张培杨谢辉杨宏旺徐慧荟刘雪曹贻社常安盖君朋贾宁金田宗康琦李鹏梁春花柳晓明马吉飞牟玉明裴俊玲任国杰宋晓琳孙国剑王翠辉吴晓峰夏鸿飞刘丽肖洪钢武伟于海深臧岐山张广为张来君赵伟龙郑勇王昌启冯平
Owner YIKANG TECH CO LTD
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