Preparation method of composite potassium monopersulfate and antibacterial application thereof in water treatment

A technology of potassium monopersulfate and compound salt, which is applied in botany equipment and methods, sterilization/microdynamic water/sewage treatment, application, etc., and can solve the problems of violent reaction, strict reaction conditions, and many by-products , to achieve the effect of simple production process, low requirements for preparation conditions and strong oxidation capacity

Inactive Publication Date: 2019-05-10
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore selected potassium monopersulfate compound salt this extensive disinfection bactericide, the method for preparing potassium monopersulfate compound salt at present all has problems such as violent reaction, more by-products, strict requirements on reaction conditions

Method used

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  • Preparation method of composite potassium monopersulfate and antibacterial application thereof in water treatment
  • Preparation method of composite potassium monopersulfate and antibacterial application thereof in water treatment

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of potassium monopersulfate composite salt, including the following steps:

[0027] Step a: Add 12.25 mL of 30wt% hydrogen peroxide into a 250ml three-necked flask with mechanical stirring and a thermometer, and use a low-temperature thermostat to control the temperature so that the temperature of the system reaches 0°C. Under 200r / min stirring conditions, the reaction 10.87 mL of 98wt% concentrated sulfuric acid was added dropwise to the vessel, the dropping time was 40 minutes, and the temperature was kept for 1 hour to obtain the peroxide reaction liquid;

[0028] Step b, controlling the temperature in the reactor to 8°C, adding 16.5852 g of potassium carbonate to the peroxidation reaction solution, and controlling the addition time to 60 minutes to obtain a neutralization reaction solution;

[0029] Step c: cooling the neutralization reaction solution to -4°C for crystallization, with a crystallization time of 12h, suction filtration, and drying at 55°...

Embodiment 2

[0031] A preparation method of potassium monopersulfate composite salt, including the following steps:

[0032] Step a: Add 12.25 mL of 30 wt% hydrogen peroxide into a 250ml three-necked flask with mechanical stirring and a thermometer, and use a low-temperature thermostat to control the temperature so that the system temperature reaches 0°C. Under 200r / min stirring conditions, 10.87 mL of 98wt% concentrated sulfuric acid was dropped into the reactor, the dropping time was 40 minutes, and the temperature was kept for 1 hour to obtain the peroxide reaction liquid;

[0033] Step b, controlling the temperature in the reactor to 8°C, adding 13.821 g of potassium carbonate to the peroxidation reaction solution, and controlling the addition time to 50 min to obtain a neutralization reaction solution;

[0034] Step c: Cooling the neutralization reaction solution to -8°C for crystallization, with a crystallization time of 13 hours, suction filtration, and drying at 55°C to obtain 10.6427g of...

Embodiment 3

[0036] A preparation method of potassium monopersulfate composite salt, including the following steps:

[0037] Step a: Add 10.28 mL of 30 wt% hydrogen peroxide into a 250ml three-necked flask with mechanical stirring and a thermometer, and use a low-temperature thermostat to control the temperature so that the temperature of the system reaches 8°C. Under 200r / min stirring conditions, 10.87 mL of 98wt% concentrated sulfuric acid was dropped into the reactor, the dropping time was 50 minutes, and the temperature was kept for 1 hour to obtain the peroxide reaction liquid;

[0038] Step b, controlling the temperature in the reactor to 8°C, adding 16.5852 g of potassium carbonate to the peroxidation reaction solution, and controlling the addition time to 70 minutes to obtain a neutralization reaction solution;

[0039] Step c, cooling the neutralization reaction solution to -8°C for crystallization, with a crystallization time of 12 hours, suction filtration, and drying at 50°C to obtain...

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Abstract

The invention provides a preparation method of a composite potassium monopersulfate disinfectant and antibacterial application thereof in water treatment. The preparation method comprises the steps ofsynthesizing monopersulfuric acid with 30% by mass of hydrogen peroxide and 98% by mass of sulfuric acid, and adding potassium carbonate into the monopersulfuric acid in batch manner to obtain the composite potassium monopersulfate. The composite potassium monopersulfate has excellent performance, with active oxygen content of 3.2-3.4%, monthly average active oxygen loss rate of 0.4% and below, and water content of less than 0.08%; the prepared composite potassium monopersulfate has a wide range of antimicrobial effects, features stability, high efficiency and safety and helps environmentallysolve the problem of disinfection and purification in water treatment.

Description

Technical field [0001] The invention relates to the preparation of composite salts, in particular to a preparation method of potassium monopersulfate composite salt and its sterilization application in water treatment. Background technique [0002] With the ever-increasing requirements for the quality of the water environment, relevant national policies have put forward higher requirements for water treatment disinfectants, and more attention is paid to the control of residual chlorine in water treatment. At present, chlorination disinfection in conventional disinfectants has problems such as incomplete removal of microorganisms and risk of leakage; chlorine dioxide disinfection is potentially toxic to organisms and unstable, and the cost is high; while ozone disinfection and ultraviolet disinfection are not sustainable, and production costs Too high. [0003] Based on the policy of "safety, cleanness and health", the present invention is committed to researching and improving the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/02A01P1/00C02F1/50
Inventor 田科刘林邓霖熊清秋陈圆圆刘铭仁
Owner XIANGTAN UNIV
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