Poly-ferric chloride-polyepichlorohydrin-dimethylamine composite coagulant

A technology of polyepichlorohydrin and polyferric chloride is applied in the fields of environment and chemistry to avoid secondary dosing, reduce dosage and improve coagulation effect.

Inactive Publication Date: 2010-04-14
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no relevant literature report about the composite of polyferric chloride and polyepichlorohydrin-dimethylamine to prepare a novel composite coagulant

Method used

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  • Poly-ferric chloride-polyepichlorohydrin-dimethylamine composite coagulant

Examples

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Embodiment 1

[0020] A polymeric ferric chloride-polyepichlorohydrin-dimethylamine composite coagulant, its appearance is a dark reddish brown liquid, the mass fraction of Fe is about 7%, the alkalinity B value is 0.5, polyepoxychloride The mass fraction of propane-dimethylamine is 7%, and the viscosity η value is 850mPa·s.

[0021] The preparation technology of above-mentioned polyferric chloride-polyepichlorohydrin-dimethylamine composite coagulant is:

[0022] (1) Take 16.94g FeCl 3 ·6H 2 O solid in the beaker, add about 30ml of distilled water, under the stirring of magnetic stirrer until completely dissolving;

[0023] (2) Slowly add 1.66gNa 2 CO 3 Powder to alkalinity B value of 0.5;

[0024] (3) After the foam disappears, add the stabilizer Na 2 HPO 4 12H 2 O powder 1.80g;

[0025] (4) Continue stirring for about 3.5-4.5 hours until Na 2 HPO 4 12H 2 The O powder was completely dissolved to obtain a polyferric chloride solution. Then add 3.50g, polyepichlorohydrin-dimethy...

Embodiment 2

[0027] A polymeric ferric chloride-polyepichlorohydrin-dimethylamine composite coagulant, its appearance is a dark reddish brown liquid, the mass fraction of Fe is about 7%, the alkalinity B value is 0.5, polyepoxychloride The mass fraction of propane-dimethylamine is 7%, and the viscosity η value is 4200mPa·s.

[0028] The preparation technology of above-mentioned polyferric chloride-polyepichlorohydrin-dimethylamine composite coagulant is:

[0029] (1) Take 16.94g FeCl 3 ·6H 2 O solid in the beaker, add about 30ml of distilled water, under the stirring of magnetic stirrer until completely dissolving;

[0030] (2) Slowly add 1.66gNa 2 CO 3 Powder to alkalinity B value of 0.5;

[0031] (3) After the foam disappears, add the stabilizer Na 2 HPO 4 12H 2 O powder 1.80g;

[0032] (4) Continue stirring for about 4 hours until Na 2 HPO 4 12H 2 The O powder was completely dissolved to obtain a polyferric chloride solution. Then, add 3.50 g of polyepichlorohydrin-dimethyl...

Embodiment 3

[0034] A polymeric ferric chloride-polyepichlorohydrin-dimethylamine composite coagulant, the difference from Example 1 or 2 is that the mass fraction of polyepichlorohydrin-dimethylamine is 2%.

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Abstract

The invention discloses a poly-ferric chloride-polyepichlorohydrin-dimethylamine composite coagulant, which is characterized in that poly-ferric chloride-polyepichlorohydrin-dimethylamine composite coagulants with different alkalization degree B values, different polyepichlorohydrin-dimethylamine mass fractions and viscosity eta values are prepared by compositing the poly-ferric chloride, the polyepichlorohydrin and the dimethylamine. The composite coagulant with fine decolorizing effect can be applied to decolorizing treatment of textile dyeing waste water and simultaneously has fine effects of removing turbidity and organics for simulated natural surface water.

Description

technical field [0001] The invention relates to a polyferric chloride-polyepichlorohydrin-dimethylamine composite coagulant and a preparation process thereof, belonging to the technical field of environment and chemistry. Background technique [0002] With the rapid development of my country's economy, the shortage of water resources has increasingly become an important factor restricting my country's economic development. The shortage of water resources is caused by the lack of water resources in our country on the one hand, and the water pollution caused by the random discharge of a large amount of waste (sewage) water without effective treatment. Therefore, it is of great significance to strengthen the prevention and control of water pollution and improve the recycling rate of water. Coagulation method has become an important water treatment method or pre-unit operation technology because of its high efficiency, simplicity and economy, and occupies an extremely important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 高宝玉陈婷岳钦艳
Owner SHANDONG UNIV
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