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Composite flocculant

A composite flocculant, hydrated ferric chloride technology, applied in the direction of flocculation / sedimentation water / sewage treatment, etc., to achieve the effect of good removal effect

Inactive Publication Date: 2011-02-16
SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above defects, the present invention provides a cheap and practical, non-toxic and harmless composite flocculant that can achieve a relatively ideal removal effect, so as to solve many shortcomings of the existing sewage treatment technology

Method used

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Effect test

Embodiment 1

[0008] The composite flocculant described in the embodiments of the present invention comprises a molecular formula of FeCl 3 ·6H 2 O's ferric chloride hexahydrate, pure water, molecular formula is Na 2 CO 3 Sodium carbonate, the molecular formula is Na 2 HPO 4 12H 2 O's disodium hydrogen phosphate dodecahydrate and polydimethyl diallyl ammonium chloride PDMDAAC are mixed, and the proportions of the above five ingredients are respectively 30%, 52%, 12%, 3%, 3%; the degree of alkalinity of sodium carbonate [OH - ] / [Fe] value is 1.

Embodiment 2

[0010] The composite flocculant described in the embodiments of the present invention comprises a molecular formula of FeCl 3 ·6H 2 O's ferric chloride hexahydrate, pure water, molecular formula is Na 2 CO 3 Sodium carbonate, the molecular formula is Na 2 HPO 4 12H 2 O disodium hydrogen phosphate dodecahydrate and polydimethyl diallyl ammonium chloride PDMDAAC are mixed, and the proportions of the above five ingredients are respectively 32%, 56%, 6%, 3%, 3%; the degree of alkalinity of sodium carbonate [OH - ] / [Fe] value is 0.5.

Embodiment 3

[0012] The composite flocculant described in the embodiments of the present invention comprises a molecular formula of FeCl 3 ·6H 2 O's ferric chloride hexahydrate, pure water, molecular formula is Na 2 CO 3 Sodium carbonate, the molecular formula is Na 2 HPO 4 12H 2 O disodium hydrogen phosphate dodecahydrate and polydimethyl diallyl ammonium chloride PDMDAAC are mixed, and the proportions of the above five ingredients are respectively 28%, 50%, 16%, 3%, 3%; the degree of alkalinity of sodium carbonate [OH - ] / [Fe] value was 1.5.

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PUM

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Abstract

The invention relates to a composite flocculant, which is formed by mixing ferric trichloride hexahydrate(FeCl3.6H2O), pure water, sodium carbonate(Na2CO3), disodium phosphate dodecahydrate(Na2HPO4.12H2O) and poly dimethyl diallyl ammonium chloride (PDMDAAC); the proportion weight percentages of the five ingredients in turn are 28 to 32 percent, 50 to 56 percent, 6 to 16 percent, 3 percent and 3 percent respectively, preferably 30 percent, 52 percent, 12 percent, 3 percent and 3 percent respectively. The invention has the advantages that: the composite flocculant is low in cost, practical, nontoxic and harmless, can effectively remove high-concentration organic pollutants and suspended matters from a waste water treatment system, has an excellent removal effect on chromaticity and can be used in place of various medicaments.

Description

technical field [0001] The invention relates to a waste water treatment preparation, in particular to a composite flocculant. Background technique [0002] With the sharp increase in water consumption, industrial wastewater also increases accordingly, but no matter drinking water, industrial water or wastewater must be treated before it can be used, discharged or reused. Current water treatment methods include flocculation-sedimentation method, biochemical method, ion exchange method, adsorption method, chemical oxidation method, electrodialysis method and sewage ecological treatment technology, etc., but the most widely used and lowest-cost treatment method is flocculation-sedimentation method; The method refers to adding a certain amount of flocculant to the wastewater to make it undergo physical and chemical reactions to achieve the purpose of water purification. At present, the economical and convenient water treatment technology flocculation-sedimentation method occupi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 刘婷婷夏志先
Owner SHANGHAI FENGXIN ENVIRONMENTAL PROTECTION TECH
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