Flocculant and preparation method thereof

A flocculant and catalyst technology, applied in the field of coal preparation wastewater treatment, can solve the problems of high operating costs, high investment in environmental protection facilities, large consumption of chemicals, etc. Effect

Active Publication Date: 2014-10-08
ZHENGZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional treatment method of coal washing wastewater is to use inorganic flocculant treatment, which has the limitations of large consumption of chemicals, low removal rate, slow settling speed, high investment in environmental protection facilities, and high operating costs.

Method used

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  • Flocculant and preparation method thereof
  • Flocculant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) Preparation of attapulgite powder

[0042] Place the attapulgite in an industrial calciner, calcinate at 400°C for 2 hours, then pulverize, pass through a 200-mesh sieve to obtain attapulgite powder with a particle size of ≤200 mesh, and set aside;

[0043] 2) Modification treatment

[0044] 2A) Ferric trichloride is added to the hydrochloric acid solution that the mass percent concentration is 4%, mixes evenly, is mixed with ferric chloride-hydrochloric acid solution, for subsequent use, and wherein the ferric chloride and the mass percent concentration are 4% hydrochloric acid solution The weight ratio is 2:100, that is, the mass percentage concentration of the prepared ferric chloride-hydrochloric acid solution is 2%;

[0045] In the embodiment of the present invention, except that the hydrochloric acid solution with a mass percentage concentration of 4% is used to prepare the ferric chloride-hydrochloric acid solution, other hydrochloric acid solutions with a ma...

Embodiment 2

[0057] 1) Preparation of attapulgite powder

[0058] Place attapulgite in an industrial calciner, calcinate at 380°C for 2 hours, then pulverize, pass through a 300-mesh sieve, and obtain attapulgite powder with a particle size of ≤300 mesh, and set aside;

[0059] 2) Modification treatment

[0060] 2A) Ferric trichloride is added to the hydrochloric acid solution that the mass percent concentration is 4%, mixes evenly, is mixed with ferric chloride-hydrochloric acid solution, for subsequent use, and wherein the ferric chloride and the mass percent concentration are 4% hydrochloric acid solution The weight ratio is 3:100, that is, the mass percentage concentration of the prepared ferric chloride-hydrochloric acid solution is 3%;

[0061] 2B) Accurately weighed attapulgite powder (1000g) is placed in a flask with a stirring and condensing device, then adding a mass percent concentration of 3% ferric chloride-hydrochloric acid solution (1200g) in the bottle, while stirring Rai...

Embodiment 3

[0067] 1) Preparation of attapulgite powder

[0068] Place attapulgite in an industrial calciner, calcinate at 400°C for 1.8 hours, then pulverize, pass through a 200-mesh sieve to obtain attapulgite powder with a particle size of ≤200 mesh, and set aside;

[0069] 2) Modification treatment

[0070] 2A) Ferric trichloride is added to the hydrochloric acid solution that the mass percent concentration is 4%, mixes evenly, is mixed with ferric chloride-hydrochloric acid solution, for subsequent use, and wherein the ferric chloride and the mass percent concentration are 4% hydrochloric acid solution The weight ratio is 1:100, that is, the mass percent concentration of the prepared ferric chloride-hydrochloric acid solution is 1%;

[0071] 2B) Accurately weighed attapulgite powder (2000g) is placed in a flask with a stirring and condensing device, and then adding a mass percentage concentration of 1% ferric chloride-hydrochloric acid solution (2000g) in the bottle, while stirring ...

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Abstract

The invention provides a water treatment flocculant and a preparation method thereof, which belongs to the technical field of environment friendliness. The water treatment flocculant comprises raw materials, namely, attapulgite, ferric trichloride and titanium trichloride. The novel attapulgite-ferric trichloride hybridized flocculant is prepared by hybridizing an inorganic flocculant ferric trichloride and attapulgite in the presence of a catalyst titanium trichloride, and the flocculant is applied to treatment on coal separation wastewater, is simple in synthesis process and low in price.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a process for synthesizing attapulgite-ferric chloride hybrid flocculant by using attapulgite and ferric chloride under the action of a catalyst. The flocculant is mainly used in the treatment of coal preparation wastewater . Background technique [0002] Attapulgite, also known as palygorskite or palygorskite, belongs to the sepiolite group in mineral classification, and is a hydrous magnesium-rich silicate clay mineral with a chain layer structure. Its structure belongs to 2:1 type clay mineral. In each 2:1 unit structure layer, the corners of the tetrahedral wafers are reversed at a certain distance to form a layer chain. Channels parallel to the chains are formed between the tetrahedral strips, and the channel cross-section is about 3.7*6.3A°. The channel is filled with zeolite water and crystal water, the chemical formula is Mg 5 Si 8 o 20 (OH) 2 (OH 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 李海松万俊峰毛圣捷代吉华董焕成买文宁王岩
Owner ZHENGZHOU UNIV
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