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Preparation method of composite flocculant for water treatment

A composite flocculant and water treatment technology, used in water/sewage treatment, adsorbed water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of low cost, slow flocculation and sedimentation, and achieve low cost and flocculation effect. Good, easy-to-use effects

Inactive Publication Date: 2018-03-23
芜湖上水源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Flocculants can be divided into inorganic flocculants and organic flocculants according to their chemical composition. Aluminum salts and iron salts such as ferric chloride and ferric sulfate, the cost of inorganic flocculants is relatively low, but the flocculation and sedimentation speed is slow, so it needs to be solved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a composite flocculant for water treatment includes the following steps:

[0020] S1. Mix 15kg of zeolite powder, 15kg of nano medical stone powder, 25kg of coconut shell charcoal, 2kg of polyethylene glycol, 100kg of dimethyl sulfoxide, heat to 65℃ and stir evenly, add 2kg of epoxy resin and continue to stir for 35min, add 4kg Stir the 36wt% formaldehyde solution uniformly, cool to room temperature, filter, wash, dry, grind, add 1kg polydimethyldiallylammonium chloride and mix uniformly to obtain material A;

[0021] S2. Mix 60kg polyferric aluminum chloride sulfate, 30kg polyferric sulfate, 20kg polyphosphoric ferric chloride, 4kg hydrogen peroxide to obtain material B;

[0022] S3. Mix 100 kg of material A, 16 kg of material B, 1 kg of calcium lignosulfonate, and 0.2 kg of triethanolamine to obtain a composite flocculant for water treatment.

Embodiment 2

[0024] A method for preparing a composite flocculant for water treatment includes the following steps:

[0025] S1. Mix 35kg of zeolite powder, 4kg of nano medical stone powder, 35kg of coconut shell charcoal, 1kg of polyethylene glycol, 150kg of dimethyl sulfoxide, heat to 45℃ and stir evenly, add 5kg of epoxy resin and continue to stir for 15min, add 10kg Stir the 30wt% formaldehyde solution uniformly, cool to room temperature, filter, wash, dry, grind, add 2kg of polydimethyldiallylammonium chloride and mix uniformly to obtain material A;

[0026] S2. Mix 50kg polyferric aluminum chloride sulfate, 40kg polyferric sulfate, 10kg polyphosphorus ferric chloride, and 8kg hydrogen peroxide to obtain material B;

[0027] S3. Mix 100 kg of material A, 10 kg of material B, 2 kg of calcium lignosulfonate, and 0.1 kg of triethanolamine to obtain a composite flocculant for water treatment.

Embodiment 3

[0029] A method for preparing a composite flocculant for water treatment includes the following steps:

[0030] S1. Mix 30kg of zeolite powder, 8kg of nano medical stone powder, 32kg of coconut shell charcoal, 1.2kg of polyethylene glycol, 140kg of dimethyl sulfoxide, heat to 50℃ and stir evenly, add 4kg of epoxy resin and continue to stir for 20min, add Stir 8kg of 32wt% formaldehyde solution uniformly, cool to room temperature, filter, wash, dry, grind, add 1.8kg polydimethyldiallylammonium chloride and mix uniformly to obtain material A;

[0031] S2. Mix 52kg of polyferric aluminum chloride sulfate, 37kg of polyferric sulfate, 12kg polyphosphoric ferric chloride, and 7kg hydrogen peroxide to obtain material B;

[0032] S3. Mix 100 kg of material A, 12 kg of material B, 1.8 kg of calcium lignosulfonate, and 0.12 kg of triethanolamine to obtain a composite flocculant for water treatment.

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Abstract

The invention discloses a preparation method of a composite flocculant for water treatment. The preparation method includes following steps: mixing zeolite powder, nano medical stone powder, coconut shell charcoal, polyethylene glycol and dimethyl sulfoxide, heating, stirring well, adding epoxy resin, continuing stirring, adding a formaldehyde solution, stirring well, cooling, filtering, washing,drying, grinding, adding polydimethyl diallyl ammonium chloride, and mixing well to obtain a material A; well mixing polysulfate ferric aluminum chloride, polyferric sulfate, polyphosphate ferric chloride and hydrogen peroxide to obtain a material B; well mixing the material a, the material B, calcium lignosulfonate and triethanolamine to obtain the composite flocculant. The preparation method isextremely simple in process, the composite flocculant is extensive in raw material source, low in cost, convenient to produce and use, small in feeding amount and good in flocculation effect, gel flocculation and deposition can be generated effectively, quick settling can be realized, water treatment efficiency and utilization rate of the flocculant are improved, and lowering cost of water treatment is facilitated.

Description

Technical field [0001] The invention relates to the technical field of flocculants, in particular to a method for preparing a composite flocculant for water treatment. Background technique [0002] Coagulation treatment of water is one of the key links in wastewater treatment, which can remove turbidity and decontamination and reduce the pollution load of subsequent sewage treatment. The flocculant is a key factor that determines the effect of coagulation treatment, and it has an important influence on the operation status of the subsequent process, the final water quality and the cost. [0003] Flocculants can be divided into inorganic flocculants and organic flocculants according to their chemical composition. Inorganic flocculants can be divided into low-molecular flocculants and high-molecular flocculants. Among them, low-molecular flocculants such as aluminum sulfate, aluminum chloride, etc. The cost of inorganic flocculants for aluminum salts and iron salts such as ferric ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56C02F1/28C02F1/72
CPCC02F1/281C02F1/283C02F1/5236C02F1/56C02F1/722
Inventor 何明兴
Owner 芜湖上水源环保科技有限公司
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