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Oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent and preparation method thereof

A dimethyl diallyl ammonium chloride, compound modification technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., to achieve the effect of high efficiency, low price, high positive charge density and

Inactive Publication Date: 2009-09-09
UNIV OF JINAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Method used

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  • Oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent and preparation method thereof
  • Oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent and preparation method thereof
  • Oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0038]Dilute 20L of water glass with 65L of water to the desired concentration. Under the condition of stirring at a temperature of 20°C to 50°C and 300 rpm to 500 rpm, add the above-mentioned diluted water glass to 5L of dilute sulfuric acid (40%) solution, and control the pH value to 4, 6 minutes Then stop stirring and polymerize for 1 hour to obtain activated silicic acid, which is ready for use. At a temperature of 35°C to 60°C, add 57kg of ferrous sulfate heptahydrate to 31L of dilute sulfuric acid (40%) solution, and stir for 10 minutes at a speed of 200 to 500 rpm to obtain sulfuric acid ferrous solution. At a temperature of 35°C to 60°C and a stirring speed of 200 rpm to 500 rpm, the activated silicic acid to be used, 4.2L of dimethyl diallyl ammonium chloride and 3.5kg of oxidant were simultaneously Add it into the above-mentioned ferrous sulfate solution, stop stirring after 15 minutes, and make a composite modified ferrosilicon coagulant semi-finished product. Pu...

Embodiment 2

[0040] Dilute 20L of water glass with 80L of water to the desired concentration. Under the condition of stirring at a temperature of 20°C to 50°C and 300 rpm to 500 rpm, add the above-mentioned diluted water glass to 5L of dilute sulfuric acid (40%) solution, and control the pH value to 3 for 6 minutes Then stop stirring and polymerize for 2 hours to obtain activated silicic acid for use. At a temperature of 35°C to 60°C, add 30kg of ferrous sulfate heptahydrate to 18L of dilute sulfuric acid (40%) solution, and stir for 10 minutes at a speed of 200 to 500 rpm to obtain sulfuric acid ferrous solution. At a temperature of 35°C to 60°C and a stirring speed of 200 rpm to 500 rpm, the activated silicic acid to be used, 3.8L of dimethyl diallyl ammonium chloride and 2.5kg of oxidant were simultaneously Add it into the above-mentioned ferrous sulfate solution, stop stirring after 15 minutes, and make a composite modified ferrosilicon coagulant semi-finished product. Put the semi-...

Embodiment 3

[0042] Dilute 20L of water glass with 90L of water to the desired concentration. Under the condition of stirring at a temperature of 20°C to 50°C and 300 rpm to 500 rpm, add the above-mentioned diluted water glass to 5L of dilute sulfuric acid (40%) solution, control the pH value to 2.5, and wait for 6 minutes Then stop stirring and polymerize for 3 hours to obtain activated silicic acid for use. At a temperature of 35°C to 60°C, 16kg of ferrous sulfate heptahydrate was added to 13.3L of dilute sulfuric acid (40%) solution, and stirred at a speed of 200 to 500 rpm for 10 minutes to obtain ferrous sulfate solution. At a temperature of 35°C to 60°C and a stirring speed of 200 rpm to 500 rpm, the activated silicic acid to be used, 2.8L of dimethyl diallyl ammonium chloride and 1.4kg of oxidant were simultaneously Add it into the above-mentioned ferrous sulfate solution, stop stirring after 15 minutes, and make a composite modified ferrosilicon coagulant semi-finished product. ...

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Abstract

The invention provides an oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent and a preparation method thereof. The coagulating agent adopts industrial grade or industrial byproducts as preparing raw materials and dimethyl diallyl ammonium chloride as an additive, the coagulating agent is fawn liquid or a buff solid product, the coagulating agent has oxidizability, high positive charge density and strong flocculation ability, improved compound functions and improved color, alga, organic matters, and the like removing efficiency. The the oxygenation and dimethyl diallyl ammonium chloride composite modification silicoferrite coagulating agent is prepared by simple, economical and applicable production device and technological process with an oxygenation copolymerization method at normal pressure in a reaction kettle with a temperature of 20-60 DEG C and does not cause secondary pollution. The solid products can be solidified with more proper preparation solidifying technologies according to actual requirements and on-site production conditions. For dye printing waste water which carries out secondary biological treatment, the COD is reduced below 80-120 mg / L, and the chroma is reduced below 30 to 50. The composite modification silicoferrite coagulating agent can be used for the fields of urban water supply, urban waste water, industrial water supply, waste water treatment, and the like and is especially suitable for waste water with high chroma or non-degradation organic matters in the field of papermaking, textile printing and dyeing, daily-use chemical industry, and the like.

Description

technical field [0001] The invention belongs to water treatment coagulants, and relates to oxidation and dimethyl diallyl ammonium chloride composite modified ferrosilicon coagulants and a preparation method thereof. Background technique [0002] The rapid development of industry and agriculture has seriously polluted my country's water resources, and it is getting worse. In order to avoid the continuous shortage of water resources, reduce the environmental pollution caused by wastewater, and strengthen the social cycle of water, it is necessary to strengthen the pollution control of industrial wastewater and domestic sewage. In the water treatment process, coagulation settlement is the most widely used and low-cost key technology unit, so it has become one of the important research focuses in the field of municipal engineering and environmental engineering. The performance of coagulants is one of the main factors that determine the efficiency of coagulation and pollution r...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 付英高宝玉付旻舸
Owner UNIV OF JINAN
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