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Polysilicate ferro-copper sulfate composite with wastewater deodorizing and flocculating function and preparation method thereof

A technology of polysilicate ferric sulfate and copper sulfate pentahydrate, which is applied in the direction of flocculation/precipitation water/sewage treatment, etc., can solve the problems of reducing the amount of metal ions added, cannot be used alone, and can not be used alone, so as to change the zeta potential, Enhance the electric neutralization ability and the effect of floc compaction

Active Publication Date: 2012-07-18
HUNAN HAILI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The hydroxy hydrate of copper ions has good flocculation performance and can effectively remove turbidity and chemical oxygen-consuming substances in wastewater, but it cannot be used as a water treatment reagent alone due to the toxicity of copper ions; polysilicic acid has good auxiliary However, it cannot be used alone; if polysilicic acid is organically compounded with one or more metal ions, it can reduce the amount of metal ions added and produce excellent flocculation effects.

Method used

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  • Polysilicate ferro-copper sulfate composite with wastewater deodorizing and flocculating function and preparation method thereof
  • Polysilicate ferro-copper sulfate composite with wastewater deodorizing and flocculating function and preparation method thereof
  • Polysilicate ferro-copper sulfate composite with wastewater deodorizing and flocculating function and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Add 220.8 grams of water and 48 grams of water glass into a 1000 mL reaction bottle with a condenser, stir well, add 48 grams of industrial concentrated sulfuric acid to make the solution pH = 2.5 to 3.5, react at 45 ° C for 0.5 hours, and then add 480 grams of seven Ferrous sulfate water, 38.4 grams of copper sulfate pentahydrate and 48 grams of industrial concentrated sulfuric acid, add 76.8 grams of 50% sodium chlorate aqueous solution dropwise at a temperature of 50-60 ° C, keep warm for 0.5 hours, and stir at room temperature for 6 hours to obtain the product Polysilicate Iron Copper Sulfate-1.

[0019] The appearance and quality indicators of the product polysilicate iron copper sulfate-1 are as follows:

[0020] Appearance: dark green liquid, viscous, soluble in water

[0021] Detection value: Density: 1.61kg / m 3 , viscosity: 17mPa.s, basicity: 17.2%, copper content: 1.8%.

Embodiment 2

[0023] Add 75.5 grams of water and 48 grams of water glass into a 1000 mL reaction bottle with a condenser, stir well, add 27.4 grams of industrial concentrated sulfuric acid to make the solution pH = 2.5 to 3.5, react at 45 ° C for 0.5 hours, and then add 411 grams of seven Ferrous sulfate water, 13.7 grams of copper sulfate pentahydrate and 27.4 grams of industrial concentrated sulfuric acid were slowly added dropwise with 82.3 grams of 50% sodium chlorate aqueous solution at 50-60 ° C. Insulate and react for 0.5 hours, and then stir at room temperature for 6 hours to obtain the product polysilicate iron copper sulfate-2.

[0024] The appearance and quality indicators of the product polysilicate iron copper sulfate-2 are as follows:

[0025] Appearance: dark green liquid, viscous, soluble in water

[0026] Detection value: Density: 1.64g / m 3 , viscosity: 19mPa.s, basicity: 17.0%, copper content: 1.4%.

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Abstract

The invention discloses a method for preparing a polysilicate ferro-copper sulfate composite with wastewater deodorizing and flocculating function by introducing copper ions and iron ions in polysilicic acid and compounding. The composite consists of ferrous sulfate heptahydrate, sodium silicate Na2SiO3.9H2O, industrial concentrated sulphuric acid, copper sulfate pentahydrate, sodium chlorate and water. As copper ions are introduced, the copper ions can react with the smelly source sulfhydryl compounds in wastewater to form chelates and the chelates are separated from water. The polysilicate ferro-copper sulfate composite has the charge neutralization function of metal ions and also has the adsorption and bridging functions of polysilicic acid; when the composite is added in wastewater, the aims of deodorizing and flocculating can be effectively achieved; and the deodorizing effect and the water-purifying effect are better than that of the traditional flocculant.

Description

technical field [0001] The invention relates to a polysilicate iron-copper sulfate composition with the function of deodorizing and flocculating waste water and a preparation method thereof. Background technique [0002] Among the various 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. The existing flocculants mainly include inorganic flocculants and organic flocculants. Inorganic flocculants mainly include aluminum sulfate, polyaluminum chloride, polyferric sulfate, etc., which have a certain effect on removing suspended solids in sewage, but have no decolorization effect on soluble substances in water, and the dosage is large and the efficiency is low. Organic flocculants mainly include polyacrylamide and formaldehyde-dicyandiamide decolorizing flocculants, but their application is limited due to their high pri...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 陈灿张燕秦岳军马林
Owner HUNAN HAILI CHEM IND
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