High efficiency water purification agent

A water purifying agent and high-efficiency technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of poor low-temperature and low-turbidity water treatment effect, high treatment cost, unreachable, etc., achieving no toxic side effects and fast sedimentation speed. , cheap effect

Inactive Publication Date: 2007-12-12
GUANGZHOU GELONG ENVIRONMENTAL PROTECTION TECH DEV
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  • Application Information

AI Technical Summary

Problems solved by technology

For example, the use of polyaluminum chloride may cause aluminum pollution, and its treatment effect on low-temperature and low-turbidity water is poor; the effect of polyferric sulfate on low-temperature and low-turbidity water is better than that of polyaluminum chloride, but it still cannot reach Satisfactory level, for some highly turbid water, the treatment cost may be relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Add 120kg of water glass and 400kg of water into a reaction kettle with a cooling device, stir and mix well, then quickly add 30kg of industrial concentrated sulfuric acid, react at 40-50°C for 0.5 hours, then add 980kg of ferrous sulfate, 40kg of chloride Sodium, 80kg of aluminum sulfate and 80kg of concentrated sulfuric acid, slowly add 300kg of hydrogen peroxide dropwise, react at a temperature not higher than 60°C for 2 hours, dissolve 40kg of sodium phosphate in 220kg of water, continue to react for 0.5 hours, and ripen for 24 hours at room temperature get the product.

Embodiment 2

[0014] Add 100kg of water glass and 600kg of water into the reaction kettle, then quickly add 30kg of industrial concentrated sulfuric acid, react at 40-50°C for 0.5 hours, then add 1040kg of ferrous sulfate, 40kg of sodium chloride, 80kg of aluminum sulfate and 80kg of concentrated sulfuric acid , slowly drop 320kg of hydrogen peroxide, react at a temperature not higher than 60°C for 2 hours, and mature at room temperature for 24 hours to obtain the product.

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PUM

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Abstract

The invention relates to a method for preparing high- performance water purification agent. The activated sodium silicate is polymerized with ferric sulfate, and modifies with chloride ion during process of producing polymeric ferric sulfate. It comprises following steps: adding 5- 6 units sodium silicate ((M=3.3,SiO2%=26) into autoclave, adding 20- 13 units water, stirring evenly, adding 2 units industrial concentrated sulfuric acid quickly, reacting at 40- 50 Deg. C for 0.5 hour, then adding 42- 45uints 90% ferric persulfate, 1- 2 units sodium chloride, 3- 5 units aluminum sulphate acetate, 4- 5 units industrial concentrated sulfuric acid, dropping 13- 14 units 27.5% hydrogen dioxide solution slowly, controlling temperature to be lower than 60 Deg. C, reacting for 2 hours, dissolving 1- 2 units sodium orthophosphate in 10- 7 units water and adding them into autoclave, reacting for another 0.5 hour, curing 24 hours and getting final product. The product is characterized by apparent functions of removing color, odor, oil, disinfection and removing COD and BOD.

Description

technical field [0001] The invention discloses a preparation technology of a modified polyferric sulfate water purifying agent capable of removing turbidity, decolorization, deodorization, bacteria removal, and removal of COD and BOD, and belongs to the technical field of preparation of environment-friendly water treatment agents. Background technique [0002] Among the technologies used in water supply and wastewater treatment, coagulation technology occupies a very important position, which directly affects the quality of the treatment effect and the level of treatment costs. Since American scientists discovered the water purification effect of aluminum sulfate in the 1860s, inorganic water purifiers have developed from simple low-molecular polymers to polymeric polymers, from single-component types to composite types, and the water purification performance has been greatly improved. At present, the most widely used coagulants with the most comprehensive performance and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 周文圣周文忠张东华尹礎周文峰
Owner GUANGZHOU GELONG ENVIRONMENTAL PROTECTION TECH DEV
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