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A kind of composite water agglutination and purification agent and preparation method thereof

A composite, purifying agent technology, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc. The problem of slow hydrolysis speed of flocculant can increase the stability, improve the long-term treatment effect, and achieve the effect of fast sedimentation.

Active Publication Date: 2022-06-17
唐山洁达环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum salt flocculants include polyaluminum chloride (PAC), polyaluminum sulfate (PAS), polyaluminum phosphate (PAP), etc., and iron salt flocculants include polyferric phosphate (PFP), PFC (polyferric chloride), polysulfuric acid Iron (PFS), etc., but the aluminum salt and iron salt flocculants have certain restrictions on water temperature, pH value, high oil, high salt, high emulsification, high chroma, etc. For example, when the water temperature is low, the flocculant The hydrolysis speed is slow and incomplete. Even if the input amount of flocculant is increased and good reaction conditions are created, the influence of water temperature drop on the coagulation effect cannot be compensated; the influence of pH value is because the hydrolysis of aluminum salt produces amphoteric hydrogen. Aluminum oxide, under acidic and alkaline conditions, aluminum hydroxide is easily soluble in water. At this time, aluminum salts exist in the form of a large number of aluminum ions in water. Since aluminum ions have no adsorption and bridging effect, impurities in water cannot be bonded together, so the coagulation effect is not good

Method used

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  • A kind of composite water agglutination and purification agent and preparation method thereof
  • A kind of composite water agglutination and purification agent and preparation method thereof
  • A kind of composite water agglutination and purification agent and preparation method thereof

Examples

Experimental program
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Effect test

preparation example 1

[0061] Preparation Example 1: (1) Mix 8Kg starch with 1.5Kg oxidant, and after mixing evenly, under the action of 400W microwave, heat at 60°C for 7min, adjust the pH value to 8, add 1Kg carboxymethyl cellulose and 0.1Kg Sodium tetraborate, after stirring, defoaming, the oxidant is potassium permanganate with a concentration of 1% by weight;

[0062] (2) Mix 1.1Kg sodium bentonite with 2Kg distilled water to make a suspension, heat to 80°C, add 0.5Kg glycerol, keep stirring for 30min, add 2.5Kg PVA, keep stirring for 1h, centrifuge, dry and grind;

[0063] (3) Mix the result of step (1) with the result of step (2), add 0.5Kg initiator and 5Kg distilled water, heat up to 45°C, keep stirring for 4h, and dry at 50°C, and the initiator is ammonium persulfate.

preparation example 2

[0064] Preparation Example 2: (1) Mix 10Kg of starch with 2Kg of oxidizing agent, after mixing evenly, under the action of 400W microwave, heat at 75°C for 3min, adjust the pH value to 10, add 1.5Kg of carboxymethyl cellulose and 0.3Kg Sodium tetraborate, after stirring evenly, defoaming, the oxidant is hydrogen peroxide with a concentration of 30% by weight;

[0065] (2) Mix 1.5Kg of sodium bentonite with 3Kg of distilled water to make a suspension, add 1Kg of glycerol after heating to 90°C, keep stirring for 40min, then add 3Kg PVA, keep stirring for 2h, centrifuge, dry and grind;

[0066] (3) Mix the resultant of step (1) and the resultant of step (2), add 1Kg of initiator and 7Kg of distilled water, heat up to 60°C, keep stirring for 3h, and dry at 60°C, and the initiator is ammonium persulfate.

preparation example 3

[0067] Preparation Example 3: The difference from Preparation Example 1 is that the product of step (2) is not added in step (3).

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Abstract

The application relates to the field of sewage treatment, and specifically discloses a composite water coagulation purifying agent and a preparation method thereof. The composite water quality coagulation purifying agent includes the following components by weight: 550-600 parts of calcined silica, 30-70 parts of rare earth porcelain sand, 20-65 parts of muscovite, 90-120 parts of polyaluminum, and 15-50 parts of serpentine 15-45 parts of polyacrylamide; its preparation method is: after muscovite, serpentine and rare earth porcelain sand are crushed respectively, and mixed, the added weight is 10-15% of the total weight of muscovite, serpentine and rare earth porcelain sand water, ball milled, dried, sieved, added calcined silica, polyacrylamide and polyaluminum, and mixed evenly. The composite water quality coagulation purifying agent of the present application is not affected by water temperature, is suitable for hot areas and severe cold areas, and is suitable for a wide range of water quality, has a high removal rate for COD, TN, TP, etc., and has immediate and long-term removal effects on algae advantage.

Description

technical field [0001] The present application relates to the technical field of sewage treatment, and more particularly, to a composite water quality agglutination and purification agent and a preparation method thereof. Background technique [0002] In recent years, with the continuous increase of my country's population and the rapid development of industrial and agricultural production, water demand has increased rapidly, and water pollution has become more and more serious. Water pollution is one of the most serious and harmful pollutions in the world today. In the process of sewage treatment, coagulation and flocculation processes are indispensable and important units. There are many varieties of water treatment flocculants. There are three main types of flocculants: organic polymer flocculants, inorganic flocculants and microbial flocculants. [0003] The most widely used inorganic flocculants are inorganic flocculants, which dissociate in water to form ions. The lar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/56
CPCC02F1/5236C02F1/56
Inventor 陈颖
Owner 唐山洁达环保科技有限公司
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