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Microfiltration ceramic membrane for removing alga and preparation method thereof

A ceramic membrane and microfiltration technology, which is applied in the field of filter materials for algae removal in water treatment, can solve the problems of microporous ceramic membranes without algae removal, damage to algae cell bodies, and impact on water safety, achieving high efficiency and rapid Removal, low cost, strong antimicrobial effect

Active Publication Date: 2013-06-19
溧阳常大技术转移中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The publication number is CN 101182054, and the patent document titled "A Method for Removing Algae by Ultrasonic Waves" discloses a method for removing algae by ultrasonic waves. Secondary pollution, affecting water safety
Publication number is CN 101785478A, and the patent literature titled "zeolite-supported potassium permanganate algaecide preparation method and algae control and algae removal method" discloses a kind of raw material with potassium permanganate and zeolite, and high The preparation method of potassium manganate loaded on zeolite algaecide has the disadvantages that the algaecide is directly added to the water body, the dosage is large, the cost of use is high, and it is not easy to regenerate and reuse
But so far there is no report on microporous ceramic membranes specially used for algae removal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The percentage by weight of each raw material component of the microfiltration ceramic membrane that is used to remove algae is as follows:

[0020] diatomite natural zeolite soluble starch 86 copies 4 parts 10 copies

[0021] Mix the three raw materials in the above table, put them into the agate ball mill jar together with deionized water and agate balls, 200 parts of balls, 100 parts of deionized water, mix and wet mill for 6 hours at 220 rpm in the agate ball mill pot , and then aged for 24h to make raw material powder. The raw material powder is then granulated with a wire mesh sieve, and after repeated sieving, most of the raw materials reach a particle size of 60 mesh, and dried in a drying oven at 105°C for 12 hours until the moisture content is 2-3%. Then put the pellets into a steel mold, and press it into a sheet under positive pressure and back pressure at 30MPa, that is, a ceramic sheet-shaped membrane blank, and put the sheet-sh...

Embodiment 2

[0024] Each raw material component of the microfiltration ceramic membrane for algae removal is by weight percentage as follows:

[0025] diatomite natural zeolite soluble starch 60 copies 10 copies 30 copies

[0026] Mix the three raw materials in the above table, put them into the agate ball mill jar together with deionized water and agate balls, 200 parts of balls, 100 parts of deionized water, mix and wet grind for 5 hours at 220 rpm in the agate ball mill pot , and then aged for 24h to make raw material powder. The raw material powder is then granulated with a wire mesh sieve, and after repeated sieving, most of the raw materials reach a particle size of 20 mesh, and dried in a drying oven at 105°C for 12 hours until the moisture content is 2-3%. Then put the pellets into a steel mold, and press it into a sheet under positive and reverse pressure at 20MPa, that is, a ceramic sheet-shaped membrane blank, and put the sheet-shaped membrane blan...

Embodiment 3

[0029] Each raw material component of the microfiltration ceramic membrane for algae removal is by weight percentage as follows:

[0030] diatomite natural zeolite soluble starch 90 3 7

[0031] Mix the three raw materials in the above table, put them into the agate ball mill jar together with deionized water and agate balls, 200 parts of balls, 100 parts of deionized water, mix and wet mill for 6 hours at 220 rpm in the agate ball mill pot , and then aged for 24h to make raw material powder. The raw material powder is then granulated with a metal mesh sieve. After repeated sieving, most of the raw materials have a particle size of 40 mesh, and dried in a drying oven at 105°C for 12 hours until the moisture content is 2-3%. Then put the pellets into a steel mold, and press them into a sheet under positive pressure and back pressure at 40MPa, that is, a ceramic sheet-shaped membrane blank, and put the sheet-shaped membrane blank in a drying oven at 105...

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PUM

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Abstract

The invention discloses a microfiltration ceramic membrane for removing alga and a preparation method thereof. The microfiltration ceramic membrane comprises raw materials consisting of diatomite, natural zeolite and soluble starch; and the weight percentages of the raw materials respectively are 60-93 percentage of diatomite, 2-10 percentage of natural zeolite and 5-30 percentage of soluble starch. The preparation method comprises steps of: adding the mixed raw materials, agate grinding balls and deionized water into an agate jar for wet grinding and aging, wherein the weight ratio of the mixed raw materials, the grinding balls and the deionized water is 1:2:1; pelleting and drying, mold pressing into a ceramic laminar membrane blank, and then putting into a drying cabinet for drying; putting the dried ceramic laminar membrane blank into a resistance furnace for sintering according to a sintering procedure, thereby obtaining the flat microfiltration ceramic membrane. According to themicrofiltration ceramic membrane for removing alga and the preparation method thereof, industrial product or natural product with wide material sources is adopted, the cost is low, the preparation method is simple and easy to do; the microfiltration ceramic membrane is high in porosity, therefore, relatively high clear water flux can be ensured under relatively low filtration pressure difference,energy consumption in filtration is small, and algae cells can be effectively and rapidly removed.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a filter material used for algae removal in water treatment to treat algae-containing water. Background technique [0002] In recent years, "water blooms" caused by eutrophication of water bodies have become more and more frequent. Exposure to water bodies containing algae toxins can cause eye and skin allergies. Drinking a small amount of water with excessive algae can cause acute gastroenteritis, and long-term drinking may cause liver cancer. At present, the methods of removing algae in water treatment mainly include mechanical physical method, biochemical method, physical chemical method, chemical method, biological method and multi-level comprehensive treatment method. The publication number is CN 101182054, and the patent document titled "A Method for Removing Algae by Ultrasonic Waves" discloses a method for removing algae by ultrasonic waves. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/14C04B35/622
Inventor 王利平汪楚乔郭宇川杜尔登
Owner 溧阳常大技术转移中心有限公司
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