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Inorganic-organic multi-element composite flocculant, and preparation method and application thereof

A multi-component compound and flocculant technology, applied in the field of water treatment, can solve the problems of strict production process requirements, comprehensive performance to be enhanced, poor COD effect, etc., and achieve a wide range of pH applications, broad industrialized market prospects, and fast flocculation speed Effect

Inactive Publication Date: 2013-08-21
沧州绿源水处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The patent of CN1393410A discloses an inorganic-organic composite flocculant, which contains a polymer of dicyandiamide and formaldehyde, polyaluminum sulfide and / or calcium polysulfide aluminum chloride, but the toxic substance formaldehyde is introduced in the preparation , making the production process demanding and potentially harmful to human health
[0006] The patent of CN102295335A discloses a flocculant composition including ferrate, polyaluminum calcium chloride, aluminum-containing compound and / or calcium-containing compound, ferric chloride and polyacrylamide, which improves the flocculation effect and has bactericidal, Algae removal function, but the effect of removing soluble COD in anhydrous is poor, and the comprehensive performance needs to be enhanced
[0007] The patent of CN102079564B discloses a polyaluminum chloride-aluminum sulfate-polydimethylallyl ammonium chloride ternary composite coagulant, but the use of aluminum salt inevitably brings potential biological toxicity problems

Method used

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  • Inorganic-organic multi-element composite flocculant, and preparation method and application thereof
  • Inorganic-organic multi-element composite flocculant, and preparation method and application thereof
  • Inorganic-organic multi-element composite flocculant, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0034] Preparation Example 1: Preparation of Modified Fly Ash

[0035] Mix 150 g of fly ash and 150 ml of 35% hydrochloric acid solution in a beaker, ultrasonically treat at 60°C, stir for 2 hours, wash with deionized water repeatedly until the pH is 5.5, filter and set aside to obtain modified Fly ash, ultrasonic frequency F = 30 KHz, power density 300 w / L.

preparation example 2

[0036] Preparation Example 2: Preparation of Sodium Ferrate

[0037] Mix 6 g of sodium peroxide and 18 g of ferrous sulfate heptahydrate in a closed and dry environment, heat and react at 700 °C for 1.5 h to obtain a solid powder containing ferrate; dissolve the solid powder containing ferrate In 3.5 mol / L NaOH solution, after filtering, add KOH solid to the filtrate until crystals or solids are precipitated, and the precipitates are filtered, washed, and vacuum-dried to obtain sodium ferrate.

preparation example 3

[0038] Preparation Example 3: Preparation of Elm Fur Grass Powder

[0039] 500g of elm fur is sun-dried, pulverized, passed through a 60-mesh sieve, and dried to obtain elm fur powder.

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Abstract

The invention relates to an inorganic-organic multi-element composite flocculant, and a preparation method and application thereof. The inorganic-organic multi-element composite flocculant comprises poly dimethyl diallyl ammonium chloride, 4A zeolite, elm bark and grass powder, modified fly ash, sodium ferrate, red clay and additive. The flocculant has the advantages of high flocculation rate, low consumption, wide pH value application range and the like, and has wide industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and more specifically relates to an inorganic-organic multi-component composite flocculant, a preparation method and an application thereof. Background technique [0002] Flocculation is one of the important links in wastewater treatment, and the key to flocculation treatment technology is to select or adopt a suitable flocculant, which largely affects the treatment effect of wastewater, the operation status of subsequent processes, the final water quality and cost fees etc. [0003] There are many classification methods of flocculants. According to their chemical composition, they can be divided into inorganic flocculants and organic flocculants. According to the molecular weight of flocculants, they can be divided into low-molecular, high-molecular, cationic, anionic and non-ionic flocculants. . Among them, inorganic flocculants such as aluminum sulfate, aluminum chloride, ferric sulf...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 杨雪飞
Owner 沧州绿源水处理有限公司
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