A kind of preparation method of polysilicon ferromanganese graphene flocculant

A graphene and ferrosilicon technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water treatment parameter control, etc., can solve the problems of high treatment difficulty, poor effect, easy hydrolysis of flocculants, etc. Low requirements for preparation conditions, simple preparation process and wide range of raw material sources

Active Publication Date: 2022-03-08
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the variety of harmful substances in domestic waste leachate, the treatment is very difficult, and it is difficult to meet the discharge standard for leachate treatment with traditional polysilicon-based flocculants.
Specifically, the current application of polysilicon-based flocculants to treat domestic waste leachate mainly has problems such as the poor effect of the flocculant on capturing multiple pollutants at the same time, the low recovery efficiency of the flocculant due to the easy hydrolysis of the flocculant, and the narrow pH range of the flocculant.

Method used

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  • A kind of preparation method of polysilicon ferromanganese graphene flocculant
  • A kind of preparation method of polysilicon ferromanganese graphene flocculant
  • A kind of preparation method of polysilicon ferromanganese graphene flocculant

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Experimental program
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Effect test

Embodiment 1

[0022] Influence of the mass ratio of graphite powder and polysilicic acid on the effect of preparing flocculant to treat landfill leachate

[0023] Preparation of polysilicon ferromanganese graphene flocculant: as figure 1 As shown, weigh silica fume and concentrated sulfuric acid according to the solid-to-liquid ratio of 1:1 (mg:mL), mix, stir evenly, and age for 3 hours to obtain polysilicic acid, wherein the mass fraction of concentrated sulfuric acid is 70%; according to graphite Powder and polysilicic acid mass ratio 2.5:100, 3.5:100, 4.5:100, 5:100, 15:100, 25:100, 26:100, 28:100, 30:100 Weigh graphite powder and polysilicon respectively acid, mixed, stirred evenly, and aged for 3 hours to obtain graphite polysilicate; weigh sodium peroxodisulfate and potassium permanganate according to the mass ratio of sodium peroxodisulfate and potassium permanganate 10:100, mix, stir evenly, Obtain a mixed oxidant; weigh the mixed oxidant and graphite polysilicate according to the ...

Embodiment 2

[0040] Effect of the mass ratio of sodium persulfate and potassium permanganate on the effect of preparing flocculant to treat landfill leachate

[0041] Preparation of polysilicon ferromanganese graphene flocculant: Weigh silica fume and concentrated sulfuric acid according to the solid-to-liquid ratio of 1:1.5 (mg:mL), mix, stir evenly, and age for 4.5 hours to obtain polysilicic acid, of which concentrated sulfuric acid The mass fraction is 80%; take graphite powder and polysilicic acid according to the mass ratio of graphite powder and polysilicic acid 25:100, mix, stir evenly, and age for 4.5 hours to obtain graphite polysilicic acid; according to sodium peroxodisulfate and high Potassium manganate mass ratio 5:100, 7:100, 9:100, 10:100, 15:100, 20:100, 21:100, 23:100, 25:100 Weigh sodium peroxodisulfate and permanganese respectively Potassium acid potassium, mix, stir evenly, get mixed oxidant; Take mixed oxidant and graphite polysilicic acid according to the mass ratio ...

Embodiment 3

[0048] Effect of mass ratio of humic acid, iron powder and graphene oxide polysilicate manganese on the effect of preparing flocculant to treat landfill leachate

[0049] Preparation of polysilicon ferromanganese graphene flocculant: Weigh silica fume and concentrated sulfuric acid according to the solid-to-liquid ratio of 1:2 (mg:mL), mix, stir evenly, and age for 6 hours to obtain polysilicic acid, of which concentrated sulfuric acid The mass fraction is 90%; take graphite powder and polysilicic acid according to the mass ratio of graphite powder and polysilicic acid 25:100, mix, stir evenly, and age for 6 hours to obtain graphite polysilicic acid; according to sodium peroxodisulfate and high Potassium manganate mass ratio 20:100 Weigh sodium peroxodisulfate and potassium permanganate, mix and stir evenly to obtain mixed oxidant; weigh mixed oxidant and graphite polysilicate according to the mass ratio of mixed oxidant and graphite polysilicate 30:100 Acid, mixed, stirred ev...

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Abstract

The invention discloses a preparation method of a polysilicon ferromanganese graphene flocculant, comprising the following steps: (1) mixing silica fume and concentrated sulfuric acid, and aging to obtain polysilicate; (2) adding graphite powder to polysilicate Mix in silicic acid and age to obtain graphite polysilicate; (3) Mix sodium peroxodisulfate and potassium permanganate to obtain a mixed oxidant, add the mixed oxidant to graphite polysilicate and mix, ultrasonically treat, Aging to obtain graphene oxide manganese polysilicate; (4) mixing humic acid, iron powder and graphene oxide manganese polysilicate, aging, adjusting pH to acidity, continuing aging, drying, grinding, The polysilicon ferromanganese graphene flocculant is obtained. The polysilicon ferromanganese graphene flocculant polysilicon ferromanganese graphene flocculant of the present invention can capture various pollutants at the same time, the recovery efficiency of the flocculant is high, and the pH range of the flocculant is wide; the preparation process is simple, the preparation condition requirement is low, and the preparation process It is easy to realize, and the sources of required raw materials are extensive.

Description

technical field [0001] The invention relates to a preparation method of an inorganic flocculant, in particular to a preparation method of a polysilicon-iron-manganese graphene flocculant used for treating landfill leachate. Background technique [0002] Due to the action of natural precipitation and microbial anaerobic decomposition, during the landfill process of domestic waste, it is easy to form a kind of domestic waste leachate with complex components of pollutants, high concentration of pollutants and toxicity in the covering soil layer. Domestic waste leachate has the characteristics of complex water quality components, many types of heavy metals, high ammonia nitrogen content, and large fluctuations in water volume and water quality. Domestic waste leachate contains a large amount of toxic and harmful substances. If it is not disposed of properly, it will cause serious damage to the ecological environment and seriously affect the health of local residents. [0003] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/28C02F103/06C02F101/20C02F101/16
CPCC02F1/5236C02F1/283C02F2209/06C02F2103/06C02F2209/08C02F2209/14C02F2101/20C02F2101/16
Inventor 黄涛宋东平刘万辉张树文周璐璐徐娇娇
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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