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Application of citric acid in preparing weakly acidic potential water and preparation method of weakly acidic potential water

A technology of weakly acidic and potential water, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as difficult control, too fast pH change of weak acid potential water, etc., to achieve guarantee Sterilization quality and effect

Active Publication Date: 2017-07-07
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides an application of citric acid in the preparation of weakly acidic potential water and a preparation method of weakly acidic potential water, which solves the problem of the existence of corrosive dilute hydrochloric acid in the electrolyte due to incomplete electrolysis of dilute hydrochloric acid, and the problem of dilute hydrochloric acid. The weakly acidic potential water of the additive is difficult to control due to the rapid pH change during the production process

Method used

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  • Application of citric acid in preparing weakly acidic potential water and preparation method of weakly acidic potential water
  • Application of citric acid in preparing weakly acidic potential water and preparation method of weakly acidic potential water
  • Application of citric acid in preparing weakly acidic potential water and preparation method of weakly acidic potential water

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Effect test

Embodiment 1

[0023] (1) Prepare 0.2% sodium chloride solution: weigh 12g of sodium chloride and dissolve in 6L of pure water.

[0024] (2) Prepare a mixed solution of 0.2% sodium chloride + 0.04% dilute hydrochloric acid: dissolve 12 g of sodium chloride and 2.4 ml of dilute hydrochloric acid in 6 L of purified water.

[0025] (3) Configure 0.2% sodium chloride + 0.04% citric acid mixed solution: take 12g sodium chloride and 2.4g monohydrate citric acid and dissolve in 6L pure water

[0026] (4) The above three solutions were electrolyzed for 1, 3, 5, and 10 minutes using a high-concentration potentiometric water device (AnyWhere-320W) respectively (the group with additives increased the electrolysis for 7 minutes).

[0027] (5) Take 1 L of electrolytic solution after electrolysis, and measure its available chlorine, pH and redox potential.

[0028] (6) Repeat the above steps three times to obtain parallel data, and the results are shown in Table 1 to Table 3.

[0029] Table 1 is 0.2% Na...

Embodiment 2

[0039] (1) Prepare 0.2% sodium chloride solution: weigh 24g of sodium chloride and dissolve in 6L of pure water.

[0040] (2) Prepare a mixed solution of 0.2% sodium chloride + 0.04% dilute hydrochloric acid: dissolve 24 g of sodium chloride and 3.6 ml of dilute hydrochloric acid in 6 L of purified water.

[0041] (3) Configure 0.2% sodium chloride + 0.04% citric acid mixed solution: take 24g sodium chloride and 3.6g monohydrate citric acid and dissolve in 6L pure water

[0042] (4) The above three solutions were electrolyzed for 1, 3, 5, and 10 minutes respectively using a high-concentration potentiometric water device (the group with additives was electrolyzed for 7 minutes).

[0043] (5) Take 1 L of electrolytic solution after electrolysis, and measure its available chlorine, pH and redox potential.

[0044] (6) Repeat the above steps three times to obtain parallel data, and the results are shown in Table 4 to Table 6.

[0045] Table 4 24g sodium chloride dissolved in 6L ...

Embodiment 3

[0052] (1) Prepare 0.2% sodium chloride solution: weigh 6g of sodium chloride and dissolve in 6L of pure water.

[0053] (2) Prepare a mixed solution of 0.2% sodium chloride + 0.04% dilute hydrochloric acid: dissolve 6 g of sodium chloride and 1.2 ml of dilute hydrochloric acid in 6 L of purified water.

[0054] (3) Configure 0.2% sodium chloride + 0.04% citric acid mixed solution: take 6g sodium chloride and 1.2g monohydrate citric acid and dissolve in 6L purified water

[0055] (4) The above three solutions were electrolyzed for 1, 3, 5, and 10 minutes respectively using a high-concentration potentiometric water device (the group with additives was electrolyzed for 7 minutes).

[0056] (5) Take 1 L of electrolytic solution after electrolysis, and measure its available chlorine, pH and redox potential.

[0057] (6) Repeat the above steps three times to obtain parallel data, and the results are shown in Table 7 to Table 9.

[0058] Table 7 6g sodium chloride dissolved in 6L ...

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Abstract

The invention discloses an application of citric acid in preparation of weak-acid electrolyzed water and a preparation method of the weak-acid electrolyzed water. The preparation method comprises the steps that a citric acid solution and a sodium chloride solution are mixed, so that a mixed solution is obtained; and the mixed solution is subjected to electrolysis, so that the weak-acid electrolyzed water is obtained. By means of the application and the preparation method, the problems that caustic diluted hydrochloric acid exists in an electrolyte solution due to incomplete electrolysis of the diluted hydrochloric acid, and the weak-acid electrolyzed water with the diluted hydrochloric acid serving as an additive is not easy to control due to the fact that the pH changes excessively fast during preparation are solved.

Description

technical field [0001] The invention belongs to the field of potentiometric water sterilization, and in particular relates to an application of citric acid in preparing weakly acidic potential water and a preparation method of weakly acidic potential water. Background technique [0002] Through a lot of research and practice, it has been found that potential water is widely used in medical, food and other fields because of its high-efficiency bactericidal ability, safe and simple production and use methods, low residue and no side effects. Among them, the potential water is divided into strong acid potential water, weak acid potential water and alkaline potential water. [0003] For example, the Chinese invention patent application document with publication number CN 102616895A discloses an acidic oxidation potential water, which includes unit A and unit B which are separately packaged before use, the unit A is an acidic solution; the unit B is an available chlorine reagent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/46C02F1/461
Inventor 丁甜覃文瑄凌建刚康孟利俞静芬崔燕刘东红叶兴乾陈健初胡亚芹陈士国
Owner ZHEJIANG UNIV
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