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Organic-inorganic composite flocculant and preparation method thereof

An inorganic composite, flocculant technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc. It can improve chemical stability, enhance flocculation effect and strong adsorption capacity.

Active Publication Date: 2022-03-04
山东瑞博龙化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the existence of complex flocculants in the prior art, the residual safety of toxic components is low, the stability is poor, the scope of use is narrow, and the polymerization process of organic components The uncontrollable structure of the middle branch affects the compounding effect of the flocculant and other defects. A kind of antibacterial, sterilizing, adsorbing heavy metal ions such as Cu2+, and adsorbing CrO4 2- Organic-inorganic composite flocculants with excellent properties such as toxic anions, environmental protection, low price, and anti-aging and their preparation methods need to be developed urgently

Method used

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  • Organic-inorganic composite flocculant and preparation method thereof
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  • Organic-inorganic composite flocculant and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] An organic-inorganic composite flocculant prepared from the following components in parts by weight:

[0037]

[0038]

[0039] The preparation method steps of above-mentioned organic-inorganic composite flocculant are as follows:

[0040] (1) Preparation of modified dendritic nano-silica:

[0041] a. Preparation of dendritic nano-silica: Add 30.2 g of tetraethyl orthosilicate and 54.3 g of absolute ethanol into reactor A, keep the temperature at 30° C., and fully stir to form a solution. Add 70.5 g of deionized water, 0.2 g of cetyltrimethylammonium bromide, and 0.5 g of urea into reactor B, stir well and mix with the solution in reactor A to form a reaction mother liquor. The mother liquor is hydrothermally synthesized in a homogeneous reactor, heated to 120-125°C, reacted for 4 hours, and the stirring speed is 60r / min to obtain a stable white emulsion.

[0042] The obtained white emulsion was centrifuged, washed three times with acetone and deionized water, a...

Embodiment 2

[0046] An organic-inorganic composite flocculant prepared from the following components in parts by weight:

[0047]

[0048] The preparation method steps of above-mentioned organic-inorganic composite flocculant are as follows:

[0049] (1) Preparation of modified dendritic nano-silica:

[0050] a. Preparation of dendritic nano-silica: Add 30.2 g of tetraethyl orthosilicate and 60.4 g of absolute ethanol into reactor A, keep the temperature at 35° C., and fully stir to form a solution. Add 70 g of deionized water, 0.62 g of cetyltrimethylammonium bromide, and 1.1 g of urea into Reactor B, and mix them with the solution in Reactor A after fully stirring to form a reaction mother liquor. The mother liquor is hydrothermally synthesized in a homogeneous reactor, the temperature is raised to 120-125° C., and the reaction is carried out for 4.5 hours. The stirring speed is 60 r / min, and a stable white emulsion is obtained.

[0051] The obtained white emulsion was centrifuged, ...

Embodiment 3

[0055] An organic-inorganic composite flocculant prepared from the following components in parts by weight:

[0056]

[0057] The preparation method steps of above-mentioned organic-inorganic composite flocculant are as follows:

[0058] (1) Preparation of modified dendritic nano-silica:

[0059] a. Preparation of dendritic nano-silica: Add 30.2 g of tetraethyl orthosilicate and 66.4 g of absolute ethanol into reactor A, keep the temperature at 40° C., and fully stir to form a solution. Add 70 g of deionized water, 1.2 g of cetyltrimethylammonium bromide, and 2.6 g of urea into reactor B, stir well and mix with the solution in reactor A to form a reaction mother liquor. The mother liquor is hydrothermally synthesized in a homogeneous reactor, heated to 120-125°C, reacted for 5 hours, and the stirring speed is 60r / min to obtain a stable white emulsion.

[0060] The obtained white emulsion was centrifuged, washed three times with acetone and deionized water, and dried at 70...

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Abstract

The invention relates to an organic-inorganic composite flocculant and a preparation method thereof, and belongs to the technical field of flocculants. The modified dendritic nano silicon dioxide is used as an inorganic composite material, and acryloyl morpholine and methacryloyloxyethyl dimethyl hexadecyl ammonium bromide are subjected to graft polymerization. As a nano material, the modified dendritic nano silicon dioxide can change the original surface structure of the organic polymeric flocculant and improve the chemical stability, the adsorption reaction capacity, the aging resistance and the flocculation capacity of the flocculant. The acryloyl morpholine, the methacryloyloxyethyl dimethyl hexadecyl ammonium bromide and the silicon dioxide are connected through chemical bonds to form an inorganic-organic hybrid aggregate, and the inorganic-organic hybrid aggregate is easier to dissociate in a diluted state, so that the flocculation rate is increased, and the flocculation effect is enhanced. The prepared organic-inorganic composite flocculant has the excellent properties of disinfection, sterilization, adsorption of heavy metal ions such as Cu < 2 + > and the like, adsorption of toxic anions such as CrO4 < 2-> and the like, environmental protection, low cost, aging resistance and the like.

Description

technical field [0001] The invention relates to an organic-inorganic composite flocculant and a preparation method thereof, belonging to the technical field of flocculants. Background technique [0002] In the treatment process of industrial wastewater, domestic sewage and urban water, flocculation treatment is an important water treatment method, which occupies an important position in water treatment, and its efficiency affects the treatment effect of the entire subsequent process. Flocculant is a kind of colloidal particles in water to form flocs through aggregation, thereby accelerating particle coagulation, and realizing disinfection, sterilization, decolorization, purification and other functions. The flocculants in the prior art can be divided into inorganic flocculants, organic polymer flocculants, natural polymer flocculants, composite flocculants and the like. Among them, the composite flocculant can overcome many shortcomings of using a single flocculant, and imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C02F1/56C02F1/28C02F1/50C02F101/20C02F101/22
CPCC02F1/5236C02F1/54C02F1/56C02F1/288C02F1/50C02F2101/20C02F2101/22Y02W10/37Y02W10/10
Inventor 李田田姚慧玲王明陆郑万强邢训坤唐明成崔世栋李园园
Owner 山东瑞博龙化工科技股份有限公司
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