Novel arsenic removal material and preparation method thereof

A new type of adsorption material technology, applied in chemical instruments and methods, other chemical processes, silicates, etc., can solve problems such as poor solid-liquid separation, secondary pollution, etc., achieve good application prospects, rapid response, and arsenic removal high rate effect

Inactive Publication Date: 2012-02-15
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But solid-liquid separation is not good, easy to cause secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take a certain amount of arsenic-containing wastewater from a certain factory, grind the natural zeolite through an 80-mesh sieve, add the natural zeolite-ferric chloride adsorption material prepared by the above method into the wastewater with a solid-to-liquid ratio of 1:25, and adjust pH to alkaline, placed in a shaker for 3-6 hours, centrifuged the container to take the supernatant for measurement.

[0020] The results before and after treatment are shown in Table 1:

[0021] Table 1 Concentration of arsenic before and after treatment of arsenic-containing wastewater

[0022] before processing

Embodiment 2

[0024] Take a certain amount of arsenic-containing wastewater from a certain factory, grind the natural zeolite through an 80-mesh sieve, add the natural zeolite-ferric chloride adsorption material prepared by the above method into the wastewater with a solid-to-liquid ratio of 1:30, and adjust pH to alkaline, placed in a shaker for 3-6 hours, centrifuged the container to take the supernatant for measurement. The results are shown in Table 2:

[0025] Table 2 Concentration of arsenic before and after treatment of arsenic-containing wastewater

[0026] before processing

Embodiment 3

[0028] Get a certain amount of arsenic-containing wastewater from a certain factory, grind the natural zeolite through an 80 mesh sieve, add the natural zeolite-ferric chloride adsorption material prepared by the above method in the wastewater with a solid-to-liquid ratio of 1:20, And adjust the pH to be alkaline, place it in a shaker for 3-6 hours, centrifuge the container and take the supernatant for measurement. The results are shown in Table 2:

[0029] Table 3 Concentration of arsenic before and after treatment of arsenic-containing wastewater

[0030] before processing

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PUM

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Abstract

The invention relates to a novel arsenic removal material and a preparation method thereof. The specific preparation raw materials include de-ionized water, ferric chloride, natural zeolite and a sodium hydroxide (NaOH) solution. When the material is prepared, the natural zeolite is taken as a base and the ferric chloride is loaded on the surface of the natural zeolite to obtain a natural zeolite-ferric chloride composite arsenic removal material. According to the preparation method provided by the invention, a prepared adsorbing material is high in adsorption efficiency, strong in alkali resistance and convenient for solid-liquid separation; and the novel arsenic removal material has the advantages of high adsorption efficiency, strong alkali resistance, convenience for solid-liquid separation, cheapness, easiness for obtaining, simple preparation method and good application prospect.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering water treatment, and in particular relates to a novel arsenic-removing material and a preparation method. Background technique [0002] Elemental arsenic is non-toxic to humans and organisms, but arsenic compounds are quite toxic. According to reports, about 110,000 tons of arsenic enter the hydrosphere every year in the world through various channels; because arsenic has a wide range of uses and is closely related to people's production and life, many industrial productions will produce a large amount of arsenic-containing waste water that exceeds the standard. Therefore, the removal of arsenic from wastewater in industrial production and drinking water in daily life is an important issue related to people's livelihood. [0003] At present, there are many methods for removing arsenic from wastewater, mainly including coagulation precipitation method, adsorption method, ion exch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/32C02F1/28C02F1/58
Inventor 李红卫乔凡吕谋孙英杰郭庆园张大磊
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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