Novel sewage treatment composite flocculant and preparation method thereof

A composite flocculant, sewage treatment technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. Difficult to control and other problems, to achieve the effect of promoting the adsorption effect of sewage purification, optimizing the effect of sewage purification, and shortening the settling time

Inactive Publication Date: 2018-04-17
江西省子轩科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compound flocculants widely used at present have single and strong selectivity for the removal of pollutants in sewage, and it is difficult to comprehensively remove many types of impurities in sewage; the manufacturing process is complicated, there are many interference factors to the product effect, and the adsorption effect is very poor. Difficult to control; high manufacturing cost, not conducive to large-scale industrialization

Method used

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  • Novel sewage treatment composite flocculant and preparation method thereof

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Embodiment 1

[0028] A novel composite flocculant for sewage treatment, the composite flocculant is compounded by oxides and chitosan, the oxides include Fe 2 o 3 Substrate and TiO 2 -IrO 2 active sites, the TiO 2 -IrO 2 The active sites are distributed in the Fe 2 o 3 surface and pores of the substrate.

[0029] The preparation method of described oxide comprises the following steps:

[0030] (1) Fe 2 o 3 Synthesis of matrix: take a certain amount of FeCl 3 or FeCl 3 ·6H 2 O dissolved in water to form FeCl 3solution, FeCl 3 Fe in solution 3+ The molar concentration is 0.1mol / L. Then to FeCl 3 Adding L-phenylalanine, polyethylene glycol and hydrogen peroxide mass fraction in the solution is 35% hydrogen peroxide, and the amount of adding L-phenylalanine, polyethylene glycol and hydrogen peroxide is by mass ratio:

[0031] FeCl 3 Solution: L-phenylalanine: polyethylene glycol: hydrogen peroxide=10:1:0.1:0.03,

[0032] Fully stir the solution, then add ammonia water dropwis...

Embodiment 2

[0037] A novel composite flocculant for sewage treatment, the composite flocculant is compounded by oxides and chitosan, the oxides include Fe 2 o 3 Substrate and TiO 2 -IrO 2 active sites, the TiO 2 -IrO 2 The active sites are distributed in the Fe 2 o 3 surface and pores of the substrate.

[0038] The preparation method of described oxide comprises the following steps:

[0039] (1) Fe 2 o 3 Synthesis of matrix: take a certain amount of FeCl 3 or FeCl 3 ·6H 2 O dissolved in water to form FeCl 3 solution, FeCl 3 Fe in solution 3+ The molar concentration is 0.2mol / L. Then to FeCl 3 Adding L-phenylalanine, polyethylene glycol and hydrogen peroxide mass fraction in the solution is 35% hydrogen peroxide, and the amount of adding L-phenylalanine, polyethylene glycol and hydrogen peroxide is by mass ratio:

[0040] FeCl 3 Solution: L-phenylalanine: polyethylene glycol: hydrogen peroxide=10:1.3:0.5:0.06,

[0041] Fully stir the solution, then add ammonia water drop...

Embodiment 3

[0046] A novel composite flocculant for sewage treatment, the composite flocculant is compounded by oxides and chitosan, the oxides include Fe 2 o 3 Substrate and TiO 2 -IrO 2 active sites, the TiO 2 -IrO 2 The active sites are distributed in the Fe 2 o 3 surface and pores of the substrate.

[0047] The preparation method of described oxide comprises the following steps:

[0048] (1) Fe 2 o 3 Synthesis of matrix: take a certain amount of FeCl 3 or FeCl 3 ·6H 2 O dissolved in water to form FeCl 3 solution, FeCl 3 Fe in solution 3+ The molar concentration is 0.2mol / L. Then to FeCl 3 Adding L-phenylalanine, polyethylene glycol and hydrogen peroxide mass fraction in the solution is 35% hydrogen peroxide, and the amount of adding L-phenylalanine, polyethylene glycol and hydrogen peroxide is by mass ratio:

[0049] FeCl 3 Solution: L-phenylalanine: polyethylene glycol: hydrogen peroxide=10:1.6:0.2:0.05,

[0050] Fully stir the solution, then add ammonia water drop...

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Abstract

The invention discloses a novel sewage treatment composite flocculant which is synthesized by compounding oxide with chitosan. The oxide comprises a Fe2O3 base and TiO2-IrO2 active sites, wherein theTiO2-IrO2 active sites are distributed on the surface of the Fe2O3 base and in pores of the Fe2O3 base. Compared with an existing chitosan flocculant, the prepared flocculant has the advantages that COD (chemical oxygen demand) removal rate, turbidity removal rate and Pb<2+> concentration reduction rate are remarkably increased, settling time is shortened as compared with that of the chitosan flocculant, and sewage purification effects are remarkably optimized.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a novel sewage treatment composite flocculant and a preparation method thereof. Background technique [0002] Any substance that can cause the solute, colloid or suspended particles in the solution to produce flocculent precipitation is called flocculant. In one solution, using two or more substances to deposit impurities is called composite flocculant. The flocculation of flocculants is a very complex physical and chemical process. Now most people think that the mechanism of flocculation is the process of flocculation and coagulation. The coagulation process is the process in which the colloidal particles lose stability and form tiny aggregates; the flocculation process is the process in which the formed tiny aggregates produce large-volume flocs under the action of flocculants. [0003] There are mainly four types of flocculants: inorganic, organic, micro...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56C02F1/28
CPCC02F1/281C02F1/286C02F1/5236C02F1/5263C02F1/56
Inventor 何梦婷付亚冰刘洋
Owner 江西省子轩科技有限公司
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