Iron-based compound water treatment agent FPFS-1 and preparation method thereof

A technology of FPFS-1 and water treatment agent, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc. It can solve the problems that cannot completely replace aluminum products, affect the treatment effect, and poor performance, and achieve low harmful impurities and safety High performance and good stability

Inactive Publication Date: 2010-07-28
HUNAN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the research on polyferric at home and abroad started in the 1980s, the main product so far is polyferric sulfate. Due to the poor performance of the product, Fe 2+ Incomplete conversion affects the treatment effect, coupled with production process and technical reasons, resulting in product limitations and cannot completely replace aluminum products

Method used

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  • Iron-based compound water treatment agent FPFS-1 and preparation method thereof
  • Iron-based compound water treatment agent FPFS-1 and preparation method thereof

Examples

Experimental program
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Effect test

example 1

[0020] Add 42 kilograms of water in the reaction equipment, start stirring. Slowly add 5 kg of concentrated sulfuric acid, then add 100 kg of ferrous sulfate heptahydrate, and add 4 kg of potassium chlorate at the same time. Oxidatively polymerize at room temperature for 2 hours, add 0.21 kg of polyacrylamide with a molecular weight of 5 million, and continue compounding for 3 hours to obtain a brown gel-like FPFS-1 product. Product weight 151 kg.

example 2

[0022] Add 50 kilograms of water in the reaction equipment, start stirring. Slowly add 15 kg of concentrated sulfuric acid, then add 150 kg of ferrous sulfate heptahydrate, and simultaneously add 9.5 kg of magnesium chlorate. Oxidatively polymerize at room temperature for 2 hours, add 1.2 kg of polyacrylamide with a molecular weight of 12 million, and continue compounding for 3 hours to obtain a brown gel-like FPFS-1 product. Product weight 225 kg.

example 3

[0024] Add 26 kilograms of water in the reaction equipment, start stirring. Slowly add 24 kg of concentrated sulfuric acid, then add 120 kg of ferrous sulfate heptahydrate, and add 10 kg of calcium chlorate at the same time. Oxidatively polymerize at room temperature for 2 hours, add 0.7 kg of polyacrylamide with a molecular weight of 24 million, and continue compounding for 4 hours to obtain a brown gel-like FPFS-1 product. Product weight 180 kg.

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Abstract

The invention discloses an iron-based compound water treatment agent FPFS-1 and a preparation method thereof. The preparation method comprises the following steps: dissolving green copperas with water, adds sulphuric acid and a catalyst into the mixture for reaction to make Fe2+ completely oxidized and polymerized to form inorganic polymer compound liquid polymeric ferric sulfate, wherein the reaction temperature is room temperature, the reaction time is between 0.5 and 4.0 hours, and the material weight ratio of ferrous sulfate heptahydrate to the sulphuric acid to the catalyst is 100:4-20:3-10; and then adding an organic polymer compound into the obtained liquid polymeric ferric sulfate for compounding to form a colloidal FPFS-1 product of the invention. Tests show that the total iron accounts for 11 to 13 mass percent of the product, the basicity of the product is between 12 and 16 percent and the reducing substance (taking Fe2+ as a reference) accounts for less than 0.005 mass percent of the product. The iron-based compound water treatment agent FPFS-1 obviously improves the flocculation performance, has rapid sedimentation and clear water in the water treatment process, has good sediment filter performance, has no iron ion migration and has the unique characteristics of removing COD, BOD and chroma and deodorizing.

Description

【Technical field】 [0001] The invention relates to an iron-based composite water treatment agent FPFS-1 and a preparation method thereof. 【Background technique】 [0002] At present, the water treatment agents on the market are mainly aluminum-based flocculants. In recent years, many studies at home and abroad have found that aluminum is a chronic poison. After the source water is treated with aluminum salt flocculants in the waterworks, the aluminum content in the factory water increases significantly, and a considerable amount of aluminum is easily absorbed and combined by the human body. Aluminum in drinking water is more harmful to the human body than other The source of aluminum is large, after it enters the human body, it can accumulate in some tissues and organs, causing various diseases. When aluminum accumulates in the central nervous system, it will block the conduction of neurons, cause memory loss or loss, and cause diseases such as senile dementia; aluminum easi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 刘卫海杨慧王晓光王利丹陶艳石岩曹金艳包凌云刘曙东
Owner HUNAN CHEM RES INST
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