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Preparation method of photo-Fenton ceramic membrane for water treatment, device and use method

A ceramic membrane and water treatment technology, applied in the field of water treatment, can solve problems such as cost reduction, inability to utilize sunlight, coating peeling, etc.

Active Publication Date: 2020-10-13
重庆中膜复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there are relatively few studies on the preparation of supported reactive nanocatalytic photo-Fenton ceramic membranes. At present, some researchers use goethite (α-FeOOH) to be cross-linked and coated on ceramic membranes (Zr / TiO 2 -α-Al 2 o 3 )superior [36,39] , due to the presence of Zr / TiO on the ceramic membrane 2 Coating, the film preparation method of coating on the coating will lead to the problem of coating peeling off during the long-term use of the film material, and the prepared supported ceramic film has only ultraviolet photocatalytic activity, and cannot use sunlight to further cut costs

Method used

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  • Preparation method of photo-Fenton ceramic membrane for water treatment, device and use method
  • Preparation method of photo-Fenton ceramic membrane for water treatment, device and use method
  • Preparation method of photo-Fenton ceramic membrane for water treatment, device and use method

Examples

Experimental program
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Effect test

Embodiment 1

[0069] Embodiment 1 Assembly of the device of the present invention

[0070] Such as Figure 4 As shown, the device of the present invention is assembled: the device for water treatment by the optical Fenton ceramic membrane is composed of at least one treatment unit, each treatment unit includes a waste water tank 1, a ceramic membrane reactor 2, and a permeated liquid that are connected in sequence. Groove 3; A gas-liquid mixing pump 4 is arranged between the waste water tank and the ceramic membrane reactor, which is used to mix air and waste water and then pump it into the ceramic membrane reactor; 2 o 2 Liquid tank 8, used for H in the process of mixing air and waste water 2 o 2 The flow is mixed together by a gas-liquid mixing pump; a photo-Fenton ceramic membrane module 5 is arranged in the waste water tank; the photo-Fenton ceramic membrane module includes at least one piece of photo-Fenton ceramic membrane 6. Further, the H 2 o 2 The circulating liquid pump 7 co...

Embodiment 2

[0071] Example 2 Light Fenton Ceramic Membrane Laboratory Small-scale Treatment of Antibiotic Wastewater

[0072] The main component of the flat ceramic membrane used (Shenzhen Huahuai New Material Co., Ltd.) is α-Al 2 o 3 , 43 channels, pore diameter 0.1μm, external dimensions 150mm×510mm×4mm, effective membrane area 0.15m 2 , pure water flux is 100m 3 / (m 2 h), the maximum operating pressure is -0.1~0.3MPa. During the experiment, the ceramic film was cut into 150mm×90mm×4mm by a water tank cutting machine for use. The cut ceramic film was ultrasonically washed with a mixed solution of distilled water: absolute ethanol: acetone (1:1:1) for 2 hours, then washed with distilled water and dried in an oven at 80°C. Store in a desiccator. Take 0.01g of solvothermal preparation [40] α-Fe 2 o 3 Nanosheet (particle size 20-50nm, specific surface area 6-10nm) photo-Fenton catalyst powder, then add 10mL of absolute ethanol solvent, 500W ultrasonic dispersion for 60min, use smal...

Embodiment 3

[0077] Example 3 Solar Fenton Ceramic Membrane Pilot Scale Treatment of Dye Wastewater

[0078] The main component of the flat ceramic membrane used in this case is α-Al 2 o 3 , 43 channels, pore diameter 0.1μm, external dimensions 150mm×510mm×4mm, effective membrane area 0.15m 2 , pure water flux is 100m 3 / (m 2 h), the maximum operating pressure is -0.1~0.3MPa. During the experiment, the ceramic film was cut into 150mm×200mm×4mm by a water tank cutting machine for use. The cut ceramic membrane is ultrasonically washed with a mixed solution of distilled water: absolute ethanol: acetone (1:1:1) for 2 hours, then washed with distilled water and placed at 90°C (or any temperature between 80°C and 100°C). temperature) in an oven, take it out and cool it, and place it in a desiccator for later use. α-Fe made by solvothermal method 2 o 3 Nanosheet (particle size 20-50nm, specific surface area 6-10nm) photo-Fenton catalyst powder, hydrogenation treatment with hydrogen (speci...

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Abstract

The invention belongs to the technical field of water treatment, and particularly relates to a preparation method of a photo-Fenton ceramic membrane for water treatment, a device and a use method. Themain technical problem to be solved by the invention is to provide a photo-Fenton ceramic membrane which is good in catalytic effect and stable in performance. The invention provides a preparation method of a photo-Fenton ceramic membrane for water treatment, which mainly comprises the following steps: pretreating a flat plate type ceramic membrane, preparing a turbid liquid from photo-Fenton catalyst nano powder, spraying the turbid liquid onto the ceramic membrane by using an ink-jet printing type spraying membrane forming device, and carrying out sintering to obtain the photo-Fenton ceramic membrane. According to the prepared photo-Fenton ceramic membrane, a proper water treatment device and a treatment method are further designed. The method for preparing the photo-Fenton ceramic is simple in process, low in cost and easy for large-scale industrial production. The prepared photo-Fenton ceramic membrane is used in cooperation with the treatment device and has good photo-Fenton catalytic oxidation activity and self-cleaning membrane pollution resistance.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method, device and application method of a photo-Fenton ceramic membrane used for water treatment. Background technique [0002] With the acceleration of my country's industrialization process, all kinds of chemical, pharmaceutical, printing and dyeing enterprises are in the ascendant, but the problem of water environmental pollution is also relatively prominent. In particular, emerging pollutants such as dyes, endocrine disruptors, antibiotics, pesticides, and microplastics are discharged into natural water bodies in large quantities due to incomplete treatment by urban sewage treatment systems, disorderly direct discharge of industrial sewage, and agricultural production discharges. , leading to the detection of such emerging pollutants in many waters around the world, and generally also become micro-pollutants in water bodies, with a content b...

Claims

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Application Information

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IPC IPC(8): B01D67/00B01D69/02B01D71/02C02F1/30C02F1/44C02F1/72
CPCB01D67/0088B01D67/0083B01D67/0039B01D71/024B01D71/025B01D69/02C02F1/722C02F1/725C02F1/30C02F1/44B01D2325/10C02F2305/026C02F2305/023Y02W10/37
Inventor 程治良全学军李硕蔡永伟晏超群
Owner 重庆中膜复合材料有限公司
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