Combined flocculant

A flocculant and combined technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of increased water treatment cost, insufficient performance, and substandard water treatment, so as to improve water treatment capacity and flocculation treatment cost Inexpensive, the effect of improving the stimulating 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

The existing flocculants generally have insufficient performance in the water treatment process, large dosage, serious waste of chemicals, increased water treatment costs and even lead to secondary pollution, resulting in substandard water treatment and other problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The flocculant composition of this embodiment is: 5 parts by weight of polyaluminum calcium chloride, 10 parts by weight of aluminum trichloride, 10 parts by weight of ferric citrate, 5 parts by weight of polysulfuric ferric chloride, 6 parts by weight of Polyferric silicate, 2 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 200-mesh porous perlite micropowder.

[0016] 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 .

[0017] Among them, the pH value of the treated water in the experimental group 1 was 7.3, the decolorization rate was 96.5%, the COD removal rate was 87.8%, the BOD removal rate was 73.6%, the total phosphor...

Embodiment 2

[0020] The flocculant is composed of 10 parts by weight of polyaluminum calcium chloride, 20 parts by weight of aluminum trichloride, 20 parts by weight of ferric citrate, 8 parts by weight of polysulfuric ferric chloride, 9 parts by weight of polyferric silicate, 3 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 200-mesh porous perlite micropowder.

[0021] 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 97.5%, and the COD The removal rate is 92.3%, the removal rate of BOD is 77.2%, the removal rate of total phosphorus is 93.6%, the removal rate of total ammonia is 51.4%, the residual rate of 20 micron solids is 10.8%, and the residual rate of flocculant ...

Embodiment 3

[0023] The flocculant is composed of 6 parts by weight of polyaluminum calcium chloride, 12 parts by weight of aluminum trichloride, 13 parts by weight of ferric citrate, 6 parts by weight of polysulfuric ferric chloride, 7 parts by weight of polyferric silicate, 3 parts by weight of potassium ferrate; 6 parts by weight of polyaluminum chloride, 12 parts by weight of gelatin, 2 parts by weight of 200-mesh porous perlite micropowder, and 1.2 parts by weight of fly ash micropowder.

[0024] 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 96.7%, and the COD The removal rate is 90.3%, the removal rate of BOD is 75.2%, the removal rate of total phosphorus is 93.4%, the removal rate of total ammonia is 50.2%, the residual rate of 20 micron solids is 20.8%, a...

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Abstract

The invention discloses a combined flocculant composed of the following components in parts by weight: 5-10 parts of polymeric aluminum calcium chloride, 10-20 parts of aluminum trichloride, 10-20 parts of ferric citrate, 5-8 parts of polysulfide ferric chloride, 6-9 parts of polymeric ferric metasilicate, 2-3 parts of potassium ferrate, 5-10 parts of polyaluminum chloride, 10-15 parts of soluble coatings and 3-5 parts of flocculant activating components, wherein the flocculant activating components are selected from one or a combination of two from porous perlite micro powder and coal ash micro powder, and the particle size of the porous perlite micro powder is 200-300. The combined flocculant is good in humidity resistance, favorable in quality stability, long in quality guarantee period, high in adaptability for the natural environment and convenient to use.

Description

[0001] technical field [0002] The invention discloses a water treatment additive, in particular a combined flocculant. Background technique [0003] The flocculant is mainly a group with positive (negative) charge and some particles or particles with negative (positive) charge in some water that are difficult to separate, reduce its potential, make it in an unstable state, and use its The aggregated nature allows these particles to be concentrated and separated by physical or chemical means. The agents generally used for this purpose are called flocculants. 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 contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 王庆球何晓春刘健杨华
Owner CHUZHOU YOULIN TECH DEV
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