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Organic/inorganic compound type flocculant

A flocculant and composite technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of high moisture content of waste residue, large volume of sewage liquid, and generation of scum, so as to reduce the amount of feeding, increase the sedimentation capacity, and feed Small amount of effect

Inactive Publication Date: 2013-08-14
CHUZHOU YOULIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the flocculants in the prior art are inorganic flocculants. Inorganic flocculants have the characteristics of low toxicity, wide source of raw materials, and low cost of use, but they also have the disadvantages of large dosage and generation of scum. The varieties include polyacrylamide, polyester polyamine, and polyvinylbenzyl quaternary ammonium salt. Compared with inorganic polymer flocculants, they have the advantages of small dosage, strong flocculation ability, high efficiency, and less scum generation, but they are not enough The disadvantage is that the water content of the waste residue is high, and the volume of the generated sewage is relatively large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The flocculant of the present embodiment consists of 10 parts by weight of potassium aluminum sulfate, 10 parts by weight of ferric citrate, 3 parts by weight of potassium ferrate; 5 parts by weight of polyaluminum chloride, 10 parts by weight of polyacrylamide, and 3 parts by weight of porous perlite micropowder, 5 parts by weight of dicyandiamide, 5 parts by weight of formaldehyde, and 15 parts by weight of calcium polysulfide aluminum calcium chloride.

[0014] After draining 200mL of soil sludge, set up experimental group 1 and experimental group 2: experimental group 1 added 200 mg of the flocculant of this example, experimental group 2 added 200 mg of commercially available flocculant, stirred and mixed separately, settled until clarified, and then tested .

[0015] Among them, the pH value of the treated water in the experimental group 1 was 7.3, the decolorization rate was 97.3%, the COD removal rate was 86.7%, the BOD removal rate was 74.8%, the total phosphoru...

Embodiment 2

[0018] The flocculant is composed of 20 parts by weight of potassium aluminum sulfate, 15 parts by weight of ferric citrate, and 5 parts by weight of potassium ferrate; 10 parts by weight of polyaluminum chloride, 15 parts by weight of polyacrylamide, and 5 parts by weight of Porous perlite micropowder, 10 parts by weight of dicyandiamide, 10 parts by weight of formaldehyde, and 25 parts by weight of calcium polysulfide aluminum calcium chloride.

[0019] Experimental group 3 took 200mL of soil sludge and drained it, added 200mg of the flocculant of this example, stirred and mixed, settled until clarified, and then tested. Among them, the pH value of the treated water in experimental group 3 was 7.1, the decolorization rate was 98.7%, and the COD The removal rate is 87.7%, the removal rate of BOD is 81.4%, the removal rate of total phosphorus is 95.8%, the removal rate of total ammonia is 45.7%, the residual rate of 20 micron solids is 9.6%, and the residual rate of flocculant ...

Embodiment 3

[0021] The flocculant is composed of 15 parts by weight of aluminum potassium sulfate, 12.5 parts by weight of ferric citrate, 4 parts by weight of potassium ferrate; 7.5 parts by weight of polyaluminum chloride, 12.5 parts by weight of gelatin, and 2.4 parts by weight of porous pearls Rock fine powder and 1.6 parts by weight of fly ash fine powder, 7.5 parts by weight of dicyandiamide, 7.5 parts by weight of formaldehyde, and 20 parts by weight of polyaluminum calcium chloride.

[0022] Experimental group 4 took 200mL of soil sludge and drained it, added 200mg of the flocculant of this example, stirred and mixed, settled until clarified, and then tested. Among them, the pH value of the treated water in experimental group 4 was 7.2, the decolorization rate was 98.1%, and the COD The removal rate is 87.2%, the removal rate of BOD is 77.8%, the removal rate of total phosphorus is 95.5%, the removal rate of total ammonia is 46.2%, the residual rate of 20 micron solids is 13.4%, an...

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Abstract

The invention discloses an organic / inorganic compound type flocculant which consists of the following components in parts by weight: 10-20 parts of aluminum potassium sulfate, 10-15 parts of ferric citrate, 3-5 parts of ferrate, 5-10 parts of polyaluminum chloride, 10-15 parts of mixture of polyacrylamide, gelatin and soluble cellulose, 3-5 parts of flocculant activation component, 5-10 parts of dicyanodiamine, 5-10 parts of formaldehyde and 15-25 parts of polycalcium aluminum chloride sulfate. The flocculant disclosed by the invention has the advantages of wide source of raw materials, low production cost, small investment, good flocculation excitation effect and low flocculation treatment cost, remarkably reduces the water content of waste residues, and greatly improves the removal rate of suspended solids.

Description

technical field [0001] The invention discloses a water treatment additive, in particular to an organic-inorganic composite flocculant. Background technique [0002] Flocculants are mainly used in the fields of water supply and sewage treatment. Coagulation and sedimentation of chemical agents is a commonly used method in water treatment technology. The method has the characteristics of low investment, small land occupation, low operating cost and wide adaptability. In water treatment coagulation and sedimentation, the timing of flocculant feeding, feeding environment control, feeding amount, excitation effect, etc. are widely involved in order to achieve a suitable flocculation effect and meet the requirements of water treatment. Most of the flocculants in the prior art are inorganic flocculants. Inorganic flocculants have the characteristics of low toxicity, wide source of raw materials, and low cost of use, but they also have the disadvantages of large dosage and gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/54C02F1/56C02F1/52
Inventor 刘健何晓春杨华
Owner CHUZHOU YOULIN TECH DEV
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