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Method for producing wastewater treatment agent with weathered coal graft organic macromolecule

A technology of organic polymer and wastewater treatment agent, which is applied in the direction of flocculation/sedimentation water/sewage treatment, dehydration/drying/concentrated sludge treatment, etc., and can solve the problems of high post-treatment costs, large energy consumption, and environmental pollution.

Inactive Publication Date: 2009-04-08
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process itself has problems such as large energy consumption, high post-processing costs and environmental pollution.

Method used

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  • Method for producing wastewater treatment agent with weathered coal graft organic macromolecule
  • Method for producing wastewater treatment agent with weathered coal graft organic macromolecule
  • Method for producing wastewater treatment agent with weathered coal graft organic macromolecule

Examples

Experimental program
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Effect test

Synthetic example 1-3

[0022] Synthesis Example 1-3: Synthesis Example of Cationic Addition Polymer Dispersant

[0023] Add 240g of deionized water to a 500mL reaction bottle, then add 60g of trimethylaminoethyl acrylate (DAC) (see NO.1 in Table 1), or 40g of trimethylaminoethyl acrylate and 80g of acrylamide (AM) The mixed monomer (see NO.2 in Table 1), or the mixed monomer of 20g trimethylaminoethyl acrylate and 100g acrylamide (see NO.3 in Table 1), add sulfuric acid dropwise to adjust the pH of the solution to 3. After raising the temperature to 42 degrees, pass nitrogen gas for about 30 minutes, then add 3g of 2% aqueous solution of V-50 to initiate the polymerization system. Heating was stopped after 15 hours of reaction to obtain dispersant synthesis examples No.1, No.2 and No.3. (See Table 1) Measure its weight-average molecular weight and cationicity respectively with static light scattering and colloid titration analysis.

Synthetic example 4-6

[0025] Add 240g of deionized water to a 500mL reaction bottle, then add 60g of trimethylaminoethyl methacrylate (DMC) (see NO.4 in Table 1), or 40g of trimethylaminoethyl methacrylate and 80g of propylene A mixed monomer of amide (AM) (see NO.5 in Table 1), or a mixed monomer of 20g trimethylaminoethyl methacrylate and 100g acrylamide (see NO.6 in Table 1), add sulfuric acid dropwise Adjust the pH of the solution to 3, heat up to 42 degrees, and pass nitrogen gas for about 30 minutes, then add 3g of 2% aqueous solution of V-50 to initiate the polymerization system. Heating was stopped after 15 hours of reaction to obtain dispersant synthesis examples No.4, No.5 and No.3. (See Table 1) Measure its weight-average molecular weight and cationicity respectively with static light scattering and colloid titration analysis.

[0026] The preparation example of the waste water treatment agent prepared by grafting weathered coal with organic polymer is introduced below.

Embodiment 1

[0028] In the 500 milliliters of 4 mouthfuls of round bottom flasks that are furnished with condensing tube, thermometer, nitrogen inlet and agitator, add the polymer NO-1 (20%) 25g that prepares in synthetic example 1, weathered coal 15g, 170.4g deionized Water, 115g of ammonium sulfate, 67.4g of 50% concentration of acrylamide, 115g of 80% trimethylethylamine acrylate chloride, heating up and keeping the temperature at 30-33°C to completely dissolve it. After 30 minutes of nitrogen gas, 1.9 g of 1% VA-044 aqueous solution was added to initiate the reaction. The viscosity of the reaction system began to increase 2.5 hours after the start of the reaction, and decreased after 25 minutes to form a dispersion. After reacting for 8 hours, 0.5 g of the above-mentioned initiator solution was added and the reaction was continued for 8 hours to obtain weathered coal grafted organic polymers to prepare wastewater treatment agents. The concentration, viscosity and particle size of the ...

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Abstract

The invention relates to a method for preparing a waste water treatment agent by weathered coal grafted organic macro-molecules. The method comprises the following steps: in inorganic salt aqueous solution, a cationoid addition polymer capable of being dissolved in the salt aqueous solution is taken as a dispersant; and cationoid water soluble polymer dispersing liquid with a grain diameter less than 100 microns is prepared by the graft polymerization of weathered coal and methacrylamide or acrylamide and more than one water soluble cationic monomer. The water soluble polymer dispersing liquid can be used for the white water treatment in the paper making industry and the waste water treatment in the food industry, steel smelting factories, the building material industry and the petroleum industry. In particular, the water soluble polymer dispersing liquid has particularly remarkable effects on the sludge dewatering for municipal sewage plants or food factories. Multiple kinds of equipment for sludge dewatering including a caterpillar chain dewatering machine, a filtration type dewatering machine, a centrifugal type dewatering machine, and the like can all use the waste water treatment agent prepared by the weathered coal grafted macro-molecules.

Description

technical field [0001] The invention relates to a method for preparing a waste water treatment agent by grafting weathered coal with an organic polymer. Background technique [0002] Due to its excellent viscosity-increasing, flocculating, drag-reducing and water-retaining properties, water-soluble polymers are widely used in many fields such as wastewater treatment and papermaking. The raw materials for the synthesis of water-soluble polymers come from petroleum products. With the shortage of petroleum resources, the use of other raw materials to replace petroleum products has become a research and development hotspot in the field of research and industrial production. Weathered coal is a natural product with low combustion value, which contains a large amount of humic acid and can be used in soil fertilizer, water treatment agent, fluid loss control agent and other fields. Chinese patents 200410058335.5, CN1244613C, CN1084781C, and 97105226 describe the process of extrac...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F11/14
Inventor 王丕新徐昆盛德鲲李文波张萍萍刘畅
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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