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Preparation method of polyaluminum ferric chloride-poly dimethyl diallyl ammonium chloride inorganic/organic composite flocculant

A technology of dimethyl diallyl ammonium chloride and polyaluminum ferric chloride, which is applied in the chemical field, can solve problems such as differences in molecular weight and particle size flocculation and bridging ability, and achieve good flocculation effect, wide application range, and reaction fast effect

Inactive Publication Date: 2013-04-03
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with organic flocculants, the molecular weight, particle size and flocculation bridging ability are much different.

Method used

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  • Preparation method of polyaluminum ferric chloride-poly dimethyl diallyl ammonium chloride inorganic/organic composite flocculant
  • Preparation method of polyaluminum ferric chloride-poly dimethyl diallyl ammonium chloride inorganic/organic composite flocculant
  • Preparation method of polyaluminum ferric chloride-poly dimethyl diallyl ammonium chloride inorganic/organic composite flocculant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take a certain amount of AlCl 3 ·6H 2 O and FeCl 3 ·6H 2 O solid is placed in a beaker, prepared as a solution, and Na is added under the condition of stirring 2 CO 3 The liquid adjusts the degree of alkalinity to 51%, in which Fe 2 o 3 、Al 2 o 3 Concentrations were 6.48%, 10.32%, adding Na 2 HPO 4 12H 2 O stabilizer with AlCl 3 ·6H 2 O and FeCl 3 ·6H 2 The mass percentage of the stabilizer based on the total amount of O is 10.7%, and a polyaluminum ferric chloride solution (PAFC) is obtained. Take PAFC and PDMDAAC products at a mass ratio of 20:1, stir and react at room temperature for 4 hours to prepare an inorganic-organic composite flocculant PAFC-PDMDAAC, and the obtained product is represented by No.1.

[0020] Inorganic-organic composite flocculant PAFC-PDMDAAC, the appearance is reddish-brown liquid, containing Fe 2 o 3 、Al 2 o 3 The weight percentages are 5.14% and 8.19%, respectively, the mass percentage of PDMDAAC (solid content is 40.6%) i...

Embodiment 2

[0022] Take a certain amount of AlCl 3 ·6H 2 O and FeCl 3 ·6H 2 O solid is placed in a beaker, prepared as a solution, and Na is added under the condition of stirring 2 CO 3 solution to adjust the alkalinity to 50%, in which Fe 2 o 3 、Al 2 o 3 Concentrations were 6.48%, 10.32%, adding Na 2 HPO 4 12H 2 O stabilizer (its mass percentage is 10.8%, with AlCl 3 ·6H 2 O and FeCl 3 ·6H 2 O total amount), to obtain polyaluminum ferric chloride solution (PAFC product). Mix PAFC and PDMDAAC at a mass ratio of 10:1, stir and react at room temperature for 5 hours to prepare an inorganic-organic composite flocculant PAFC-PDMDAAC, and the obtained product is represented by No.2.

[0023] Inorganic-organic composite flocculant PAFC-PDMDAAC, the appearance is reddish-brown liquid, containing Fe 2 o 3 、Al 2 o 3The weight percentages are 5.06% and 8.07%, respectively, the weight percentage of PDMDAAC (40.6% solid content) is 1.92%, the density (20°C) is 1.28, and the degree o...

Embodiment 3

[0025] Take a certain amount of AlCl 3 ·6H 2 O and FeCl 3 ·6H 2 O solid is placed in a beaker, prepared as a solution, and Na is added under the condition of stirring 2 CO 3 The solution adjusts the degree of alkalinity to 61%, of which Fe 2 o 3 、Al 2 o 3 Concentrations were 6.5%, 10.4%, adding Na 2 HPO 4 12H 2 O stabilizer (its mass percentage is 10.7%, with AlCl 3 ·6H 2 O and FeCl 3 ·6H 2 O total amount), the polyaluminum ferric chloride solution (PAFC) was obtained. Mix PAFC and PDMDAAC at a mass ratio of 20:1, stir and react at room temperature for 5 hours to prepare an inorganic-organic composite flocculant PAFC-PDMDAAC, and the obtained product is represented by No.3.

[0026] Inorganic-organic composite flocculant PAFC-PDMDAAC, the appearance is reddish-brown liquid, containing Fe 2 o 3 、Al 2 o 3 The weight percentages are 5.24% and 8.39%, respectively, the weight percentage of PDMDAAC (40.6% solid content) is 0.99%, the density (20°C) is 1.24, and th...

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Abstract

The invention relates to a preparation method of a polyaluminum ferric chloride-poly dimethyl diallyl ammonium chloride (PAFC-PDMDAAC) inorganic / organic composite flocculant. The inorganic / organic composite flocculant is prepared by taking AlCl3.6H2O, FeCl3.6H2O, and PDMDAAC as raw materials and adopting a method of adding PDMDAAC into a PAFC system. The flocculant integrates the advantages of high molecular weight of PDMDAAC, high charge neutrality and adsorption bridging ability, wide application range, good flocculation effect and small generated sludge quantity, and high PAFC reaction velocity, large formed flocculating constituent, high settling velocity, wide applied pH (potential of hydrogen) range, good coagulation effect and the like. The PAFC-PDMDAAC inorganic / organic composite flocculant can be widely applied to the fields of water supply, waste water treatment, papermaking, oil extraction, textile printing and dyeing, mining, daily-use chemical industry and the like, and has a good water treatment effect.

Description

technical field [0001] The invention relates to a preparation method of polyaluminum ferric chloride-dimethyl diallyl ammonium chloride homopolymer inorganic-organic composite flocculant (PAFC-PDMDAAC), which belongs to the field of chemical technology. Background technique [0002] The coagulation-sedimentation method has the advantages of cost-effectiveness, simple process and convenient operation, and is widely used in water and wastewater treatment. Whether it is urban and industrial water supply treatment, or urban and industrial wastewater treatment, coagulation and sedimentation are regarded as an indispensable technical link in the process. The quality of the coagulation treatment depends largely on the quality of the coagulant. Coagulant is a high value-added and high-tech water treatment agent, which largely determines the innovation and development of water treatment technology, the simplification of process flow, the level of operating costs and the quality of w...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56
Inventor 岳钦艳孙翠珍高宝玉曹百川杨忠莲赵艳侠
Owner SHANDONG UNIV
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