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Application of methylcellulose graphene flocculation auxiliary to sewage treatment

A technology of methyl cellulose and flocculation aid is applied in the application field of methyl cellulose graphene flocculation aid in sewage treatment, which can solve the problem of decreasing, increasing economic cost, and the removal rate of flocculation purification rate is not improved, etc. problems, to achieve the effect of reducing the dosage, improving the purification rate and increasing the speed

Inactive Publication Date: 2018-10-23
郴州国盛新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is found that the local flocculation efficiency around the flocculant containing conductive agent has been improved, but the flocculation purification rate (i.e. removal rate) of the whole sewage treatment system has not been improved, or even decreased, making it necessary to add more flocculation In order to achieve the original flocculation purification rate, the economic cost is increased, so the gain outweighs the gain

Method used

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  • Application of methylcellulose graphene flocculation auxiliary to sewage treatment
  • Application of methylcellulose graphene flocculation auxiliary to sewage treatment
  • Application of methylcellulose graphene flocculation auxiliary to sewage treatment

Examples

Experimental program
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Embodiment 1～7 and comparative example 1～4

[0033] Firstly, the methylcellulose graphene flocculation aid is prepared, and the methylcellulose graphene flocculant aid comprises methylcellulose graphene microcapsules and a dispersant. The methylcellulose graphene microcapsules include a core material and a wall material, wherein the core material is graphene, and the wall material is methyl cellulose.

[0034] In each embodiment and comparative example, the consumption (A) of methylcellulose graphene microcapsule, the consumption (B) of dispersant, the kind (C) of dispersant, the mass ratio (D) of wall material and core material The specific parameters are shown in Table 1.

[0035] The preparation method of methyl cellulose graphene flocculant aid comprises the following steps:

[0036] S1. prepare methylcellulose graphene microcapsules, comprising the following steps:

[0037] S11. Graphene is placed in pure water for ultrasonic dispersion, and the ratio of graphene to pure water is 0.1g:10ml to obtain a graphene dis...

Embodiment 8

[0045] Different from Example 1, the preparation method of methylcellulose graphene microcapsules in the present example comprises the following steps:

[0046] S11. Graphene is placed in pure water for ultrasonic dispersion, and the ratio of graphene to pure water is 0.1g:10ml to obtain a graphene dispersion;

[0047]S12. Make the wall material into a solution with a mass fraction of 30wt%, add the obtained graphene dispersion, and stir for 30min under a nitrogen atmosphere with a temperature of 50°C and a pressure of 0.5MPa at a stirring speed of 800r / min.

[0048] S13. After the stirring is finished, filter, collect the solid product, and freeze-dry to obtain methylcellulose graphene microcapsules.

[0049] Other steps and condition parameters are the same as in Example 1.

Embodiment 9

[0051] Different from Example 1, the preparation method of methylcellulose graphene microcapsules in the present example comprises the following steps:

[0052] S11. Graphene is placed in pure water for ultrasonic dispersion, and the ratio of graphene to pure water is 0.1g:10ml to obtain a graphene dispersion;

[0053] S12. Make the wall material into a solution with a mass fraction of 30wt%, add the obtained graphene dispersion, and stir for 30min under a nitrogen atmosphere with a temperature of 50°C and a pressure of 2MPa at a stirring speed of 800r / min.

[0054] S13. After the stirring is finished, filter, collect the solid product, and freeze-dry to obtain methylcellulose graphene microcapsules.

[0055] Other steps and condition parameters are the same as in Example 1.

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Abstract

The invention provides application of a methylcellulose graphene flocculation auxiliary to sewage treatment. The methylcellulose graphene flocculation auxiliary is prepared from the following components in parts by weight: 75 to 88 parts of methylcellulose graphene microcapsule and 12 to 25 parts of dispersant; the methylcellulose graphene microcapsule comprises a core material and a wall materialcoating the core material, and a mass ratio of the wall material to the core material is 0.3:1 to 1:1; the core material is graphene; the wall material is methylcellulose. According to the invention,the methylcellulose graphene flocculation auxiliary can improve a purification rate of a unit flocculant and maintain or reduce a use amount of the flocculant when improving flocculation efficiency.

Description

technical field [0001] The invention relates to the technical field of water treatment purifiers, more specifically, to the application of a methylcellulose graphene flocculation aid in sewage treatment. Background technique [0002] The flocculation process is an indispensable key link in the sewage treatment process. In the process of sewage treatment, it is often necessary to add flocculants to make the suspended particles in the sewage gather and become larger to form flocs, so that the particles can be aggregated and settled. The principle of flocculation is as follows: the groups with positive (negative) charges in the flocculant can neutralize the particles with negative (positive) charges in water that are difficult to separate, reduce their potential, and use the polymerization properties to make these particles concentrate, A flocculent coagulation precipitate is formed and separated by physical or chemical methods. [0003] Some of the existing flocculants will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/54C02F1/52B01J13/04
CPCB01J13/04C02F1/5236C02F1/54C02F1/56
Inventor 李丽萍
Owner 郴州国盛新材科技有限公司