Biohaydite filter material and its prepn

A technology of biological ceramsite and filter material, which is applied in the direction of ceramic products, sustainable biological treatment, chemical instruments and methods, etc., can solve the problems of insufficient surface roughness, small amount of microbial immobilization, and low immobilization rate, and achieve aeration The effect of small bubble resistance, high hardness, and improved degradation ability

Inactive Publication Date: 2007-01-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the low porosity of the existing ceramsite filter material, especially the low micropore content, insufficient surface roughness, and poor hydrophilicity, the problems of small specific surface area, poor adsorption capacity, small amount of microbial immobilization, and

Method used

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  • Biohaydite filter material and its prepn

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0008] Specific embodiment 1: The bio-ceramsite filter material of this embodiment is composed of 30-40wt.% shale, 30-45wt.% fly ash, 10-20wt.% sludge, 3-8wt.% pore former and 0.5 ~2wt.% binder is made, in which the chemical composition of shale, fly ash and sludge is shown in Table 1.

[0009]

[0010] In this embodiment, the pore-forming agent is coal powder; the binder is carboxymethyl cellulose.

Example Embodiment

[0011] Specific embodiment two: this embodiment is different from specific embodiment one in that the bio-ceramsite filter material is composed of 34wt.% shale, 35wt.% fly ash, 15wt.% sludge, and 5wt.% pore former And 1wt.% binder made.

Example Embodiment

[0012] Specific embodiment three: this embodiment is different from specific embodiment one in that the bio-ceramsite filter material is composed of 30wt.% shale, 40wt.% fly ash, 20wt.% sludge, and 8wt.% pore former And 2wt.% binder made.

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Abstract

The present invention is biohaydite filter material and its preparation process and belongs to the field of water treating engineering technology. The biohaydite filter material is prepared with shale 30-40 wt%, fly ash 30-45 wt%, sludge 10-20 wt%, pore creating agent 3-8 wt% and adhesive 0.5-2 wt%. The preparation process includes the steps of mixing material, forming, stoving, roasting, sintering and modifying. The preparation process has great amount of industrial waste utilized and low power consumption, may have microbes immobilized on its surface for biodegradation to result in raised organic matter degrading capacity, and may have its surface modified chemically for positively charging and hydroxylating favorable to eliminate natural organic matter from raw water.

Description

Technical field [0001] The invention belongs to the field of water treatment engineering, and relates to a carrier for drinking water filtration technology, biological pretreatment of raw water, and advanced treatment of sewage. Background technique [0002] At present, most commonly used particle carriers in biological treatment are activated carbon, zeolite and ceramsite. The problems of these biological carriers are: (1) Activated carbon: Although it has a huge specific surface area and strong adsorption capacity, activated carbon has low strength, short life span, unsuitable for washing, and high processing costs. (2) Zeolite: Due to the large pore size, the specific surface area is small and the adsorption capacity is poor. (3) The currently commonly used ceramsite also has many defects: low porosity, especially low content of micropores, insufficient surface roughness, and poor hydrophilicity, resulting in too small specific surface area of ​​ceramsite and poor adsorption p...

Claims

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Application Information

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IPC IPC(8): C04B35/16C04B38/00C02F3/10
CPCY02W10/10
Inventor 冯奇马放邱珊沃原
Owner HARBIN INST OF TECH
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