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Method for preparing ceramic membrane support body from purified water sludge and prepared ceramic membrane support body

A ceramic membrane support, ceramic membrane technology, applied in ceramic material production, permeation/dialysis water/sewage treatment, application, etc., can solve problems such as high disposal costs, reduce environmental pressure, high removal rate, small pore size Effect

Active Publication Date: 2020-02-07
北京市自来水集团有限责任公司技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the experience of developed countries, the disadvantages of high disposal costs, secondary pollution and other environmental pressures will gradually limit the disposal method of sludge landfill.

Method used

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  • Method for preparing ceramic membrane support body from purified water sludge and prepared ceramic membrane support body
  • Method for preparing ceramic membrane support body from purified water sludge and prepared ceramic membrane support body
  • Method for preparing ceramic membrane support body from purified water sludge and prepared ceramic membrane support body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1 Preparation of Tubular Ceramic Membrane Support Body

[0075] 1. Preparation of sludge powder

[0076] The water purification sludge is dried at 100±5°C until the moisture content reaches 5%, and then pulverized by a pulverizer, and the pulverized material is passed through a 170-240 mesh sieve to obtain sludge powder , the particle size of sludge powder is 60-80μm;

[0077] 2. Preparation of sludge block material

[0078] Spray water into the sludge powder to make the moisture content of the sludge powder reach 50%, and then put it in a mud refining machine (Dabin company, model Potfan 3-b), and put it under normal temperature (15-30°C) and normal pressure Carry out mud treatment.

[0079] Mud refining can remove the air and impurities in the mud, making the raw materials more dense and uniform in temperature to facilitate shaping. If there are air bubbles in the green body, the air will expand due to heat during firing, causing the ceramic film to def...

Embodiment 2

[0093] Embodiment 2 Preparation of Tubular Ceramic Membrane Support Body

[0094] 1. Preparation of sludge powder

[0095] The water purification sludge is dried at 100±5°C until the moisture content reaches 8%, and then pulverized by a pulverizer, and the pulverized material is passed through a 170-240 mesh sieve to obtain sludge powder , the particle size of sludge powder is 60-80μm;

[0096] 2. Preparation of sludge block material

[0097] Spray water into the sludge powder to make the moisture content of the sludge powder reach 40%, and then place it in a vacuum mud refining machine for mud refining;

[0098] After 3 hours of sludge refining treatment, the sludge was divided into sealed bags, sealed and stored at room temperature (20-25°C), and aged for 24 hours to obtain sludge refining sludge blocks;

[0099] 3. Compression molding treatment

[0100] 3-1) Evenly fill the sludge refining mud block material (100-150g) into the mold, and use a hydraulic press for pressi...

Embodiment 3

[0108] Example 3 Preparation of Tubular Ceramic Membrane Support

[0109] 1. Preparation of sludge powder

[0110] Dry the water purification sludge at 100±5°C until the moisture content reaches 6%, then use a pulverizer for pulverization treatment, and the pulverized material is passed through a 170-240 mesh sieve to obtain sludge powder , the particle size of sludge powder is 60-80μm;

[0111] 2. Preparation of sludge block material

[0112] Spray water into the sludge powder to make the moisture content of the sludge powder reach 50%, and then place it in a vacuum mud refining machine for mud refining;

[0113] After sludge refining treatment for 1 hour, separate the sludge into sealed bags, store it sealed at room temperature (20-25°C), and perform aging treatment for 36 hours to obtain sludge refining sludge block;

[0114] 3. Molding treatment

[0115] 3-1) Evenly fill the sludge refining mud block material (100-150g) into the mold, and use a hydraulic press for pres...

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Abstract

The invention relates to a method for preparing a ceramic membrane supporting body from water purification plant sludge and the prepared ceramic membrane supporting body. The preparation method of the ceramic membrane supporting body includes the step that the water purification plant sludge is sintered at high temperature under the high-temperature conditions, wherein the sintering temperature is lower than or equal to 1200 DEG C. Industrial waste, namely, water treatment plant sludge, serves as the raw material of the prepared ceramic membrane supporting body, the technical problem that water plant sludge disposal is difficult is solved, water plant sludge disposal cost is reduced, and production cost of the ceramic membrane supporting body and environment pollution are reduced. Meanwhile, the raw material range of the manufactured ceramic membrane supporting body is widened, and higher economic value is created.

Description

technical field [0001] The invention relates to a solid membrane material and a preparation method thereof, in particular to an inorganic ceramic membrane material and a preparation method thereof, belonging to the technical field of membrane separation for environmental protection. Background technique [0002] Ceramic membrane is a kind of inorganic membrane, which is a solid membrane material in membrane separation technology. Because of its advantages of high temperature resistance, chemical and biological corrosion resistance and easy cleaning, it has become one of the research hotspots in the field of membrane technology. At present, it has been successfully applied in the separation process in the fields of chemical and petrochemical, food, biology and medicine. [0003] Ceramic membranes are usually composed of a top membrane that acts as a separator and a support that acts as a support. The performance of the top membrane depends on the quality of the coating solut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/32C02F1/44
CPCC02F1/44C04B33/1321C04B33/32C04B2235/96C04B2235/9692Y02P40/60
Inventor 刘永康张晓岚李玉仙曹新垲顾军农王敏柴文游晓旭
Owner 北京市自来水集团有限责任公司技术研究院
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