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Filtration apparatus and filtration method

A filtration equipment and filtration chamber technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of difficult recovery, short service life and high cost of construction

Pending Publication Date: 2020-07-07
中煤(北京)环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For water treatment in the environmental protection industry, organic membrane materials are usually used for filtration, but in the process of application, due to the poor pressure bearing capacity of traditional organic membranes, there are problems that they are easy to be flattened and deformed under high pressure and are not easy to recover; and traditional The anti-fouling ability of the organic membrane is weak, and the membrane is easily blocked; the service life is short and it is not resistant to high temperature
[0003] Therefore, there are also plans to use inorganic ceramic membranes for water filtration, but inorganic ceramic membranes are brittle and easy to break, and the chemical properties of ceramic membranes are unstable and easily react with silicon, resulting in blockage of membrane pores; cost high

Method used

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  • Filtration apparatus and filtration method
  • Filtration apparatus and filtration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A flexible ceramic membrane, such as figure 1 Shown, prepared by the following method:

[0027] 1. Mixture:

[0028] Take the following raw materials, add about 125g of co-solvent, and mix well:

[0029] Ceramic membrane particles (TiO2) 7.5g

[0030] PTFE Granules 92.5g

[0031] The particle size of the above-mentioned ceramic membrane particles is 1-5 μm, the particle size of the polytetrafluoroethylene particles is 0.2-0.5 μm, the co-solvent is kerosene, heated to 200-260 ° C, and stirred to wrap the polytetrafluoroethylene around the ceramic membrane particles , forming a composite membrane material;

[0032] 2. Materials:

[0033] Put the above-mentioned composite membrane material in a rod groove and stir it thoroughly for 30 minutes to make a hollow tubular rod.

[0034] 3. Forming: Extrude the above-mentioned tubular bar into a hollow thin tubular material with an inner diameter of 0.5 mm to 10 mm and an outer diameter of 1 mm to 12 mm by extruding at 260°...

Embodiment 2

[0040] The invention relates to an application of a flexible ceramic membrane, which is used as a tubular membrane wire in water purification and filtration equipment.

[0041] The above-mentioned water purification equipment such as Figure 4 As shown, it includes: a casing 100 , a tubular membrane filament 200 , a gas reaction generating device and a cavitation generating device 300 .

[0042] The housing 100 includes a water purification chamber 110, the water purification chamber 110 divides the interior space of the housing 100 into a water purification chamber inside the water purification chamber and a filter chamber outside the water purification chamber, and the water purification chamber is provided with a production The water outlet 111, the filter chamber is provided with a water inlet 121, a cross-flow outlet 123 and a sewage outlet 125; the water production outlet is arranged on the top of the housing, the sewage outlet is arranged on the bottom of the housing, a...

Embodiment 3

[0076] A water purification and filtration equipment, which is basically the same as the equipment in Example 2, the only difference is that the ceramic membrane particles selected for the flexible ceramic membrane are silicon carbide, and the above water purification and filtration equipment is used for wastewater filtration, and it is found that after a period of operation Filtration throughput is severely affected due to bacterial growth.

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Abstract

The invention relates to filtration equipment which is characterized in that a plurality of tubular membrane filaments are mounted in a filtering cavity; each tubular membrane filament is of a hollowlong tubular structure; a gap for filtering is formed in the pipe wall of each tubular membrane filament; opening parts at two ends of each tubular membrane filament are mounted on a water purifying chamber; the middle part of each tubular membrane filament droops to form a U-shaped structure; the inner wall of each tubular membrane filament is communicated with the water purifying cavity througha connector of the water purifying chamber; and the outer wall of each tubular membrane filament is communicated with the filtering cavity. Compared with the prior art, the tubular membrane filamentscannot be flattened and deformed, but can be improved to higher filtering precision, so that pollutants with smaller particle sizes can be intercepted, the filtering effect is better, and the tubularmembrane filaments are not easily blocked by the pollutants.

Description

technical field [0001] The invention relates to the technical field of environmental protection water treatment, in particular to a flexible ceramic membrane and its preparation method and application. Background technique [0002] For water treatment in the environmental protection industry, organic membrane materials are usually used for filtration, but in the process of application, due to the poor pressure bearing capacity of traditional organic membranes, there are problems that they are easy to be flattened and deformed under high pressure and are not easy to recover; and traditional The anti-fouling ability of the organic membrane is weak, and the membrane is easily blocked; the service life is short and it is not resistant to high temperature. [0003] Therefore, there are also plans to use inorganic ceramic membranes for water filtration, but inorganic ceramic membranes are brittle and easy to break, and the chemical properties of ceramic membranes are unstable and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D69/08B01D71/36
CPCB01D67/0079B01D71/36B01D69/087
Inventor 曹辉
Owner 中煤(北京)环保股份有限公司
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