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Preparation of hydroxyl oxidize iron modified filtering material and application

A ferric oxyhydroxide modification technology, applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problems of short service life of filter material, easy detachment of adsorption layer, low adsorption strength, etc., and achieve large load capacity, Not easy to fall off, the effect of high positive charge content

Inactive Publication Date: 2008-10-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method and application of a modified filter material in order to solve the problems of low adsorption strength of the currently used modified filter material on the carrier, easy detachment of the adsorption layer and short service life of the filter material.

Method used

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Examples

Experimental program
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specific Embodiment approach 1

[0013] Specific Embodiment 1: The ferric oxyhydroxide modified filter material of this embodiment is prepared according to the following steps: 1. After the carrier is washed, it is soaked in an acid with a pH value of 1 to 2 for 24 to 48 hours, and then rinsed with water for 10 to 15 times , and then soaked in ferric chloride solution with a concentration of 0.01mol / L-1.0mol / L for 1 day, then heated to 35-70°C, and kept warm for 4-8 days; The pH value is 5.4-7.5; 3. Put the solid phase in a drying oven at 80-140° C. for 2-24 hours to obtain the ferric oxyhydroxide modified filter material.

specific Embodiment approach 2

[0014] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the carrier in step 1 is one or more of activated carbon, quartz sand, zeolite, ceramsite, molecular sieve, silica gel, and activated alumina. Other steps and parameters are the same as those in Embodiment 1.

[0015] When the carrier of this embodiment is composed of two or more substances, they are mixed in any proportion.

specific Embodiment approach 3

[0016] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 1, after the carrier is washed, it is soaked in an acid with a pH value of 1.2-1.8 for 30-42 hours, and then rinsed with water for 11-14 times. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention discloses a preparation method of hydroxyl oxidize iron modified filter media and application thereof, which relates to a preparation method of the modified filter media and the application thereof. The invention solves the problems that adsorption strength on a carrier is low, an absorption layer is easy to drop off and the service life of the filter media is short in the currently adopted modified filter media. The preparation method of the hydroxyl oxidize iron modified filter media comprises the steps that: first, the carrier is soaked in acid and then soaked in a ferric chloride solution; second, washing is carried out; third, drying is carried out. The hydroxyl oxidize iron modified filter media is obtained. The hydroxyl oxidize iron modified filter media of the invention is used for purifying water. The hydroxyl oxidize iron modified filter media prepared by the invention has large specific surface area and high absorption strength and does no harm to human bodies; the combination between hydroxyl oxidize iron and the carrier is relatively firm and service life is long.

Description

technical field [0001] The invention relates to a preparation method and application of a modified filter material. Background technique [0002] The filtration process is a key process in water treatment and an indispensable link in drinking water treatment. It is directly related to the water quality of the factory water and is an important barrier for the water treatment process. Its main function is to remove the remaining turbidity in the water after sinking. degree, tiny flocs and microorganisms, algae, organic matter, and groundwater iron and manganese, etc. In terms of sewage treatment, in addition to removing turbidity in water, it is also used to remove heavy metal ions, etc. At present, due to the continuous improvement of people's requirements for water quality, the existing technology can no longer meet people's needs. New water plants often use advanced treatment or enhanced treatment technology to improve drinking water quality. However, the disadvantage of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/06
Inventor 马军王群
Owner HARBIN INST OF TECH
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