A multi-stage serial filtration system composed of a porous ceramic filter and its preparation method

A filtration system, porous ceramic technology, applied in ceramic products, chemical instruments and methods, filtration treatment, etc., can solve the problems of high price, low cost, inability to effectively remove heavy metals from water, etc., achieve large specific surface area, and enhance inactivation effect. Effect

Active Publication Date: 2022-06-17
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many types of household drinking water treatment devices on the market, but for some families in poor and remote areas, the price of these drinking water treatment devices is high
In response to this defect, a low-cost porous clay filter device and a silver-loaded porous clay filter device have appeared on the international market. The sterilization effect is remarkable, but this device cannot effectively remove heavy metals in water.
Since this porous ceramic filter device simply uses a porous ceramic filter element to treat drinking water, its processing capacity is limited, and the treatment effect is not ideal for water sources with serious pollution.

Method used

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  • A multi-stage serial filtration system composed of a porous ceramic filter and its preparation method
  • A multi-stage serial filtration system composed of a porous ceramic filter and its preparation method
  • A multi-stage serial filtration system composed of a porous ceramic filter and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] like figure 1 As shown, the coating reaction generating device 1 includes a casing 101, an ultraviolet light source 102 and a supporting member; the supporting member includes a reactor base 105, a tray support 104 and an annular tray 103; the upper end of the casing is open, and the lower end is fixed to the supporting member; The ultraviolet light source is sealed and sheathed with a glass lampshade, and then installed on the reactor base 105 and connected to the power source; on the reactor base 105, a plurality of tray supports are also fixed in the circumferential direction of the ultraviolet light source, and a circular ring is placed on the tray support. Tray 103; eg figure 2 As shown, it is a top view of the annular tray and the tray support in the coating reaction generating device, wherein the boxes are the positions of the four column-shaped tray support;

[0061] The outer shell 101 is a glass shell without a cover; the ultraviolet light source 102 is used...

Embodiment 2

[0063] like Figure 4 As shown in the figure, the multi-stage serial filter system is surrounded by a casing, and the porous ceramic pot filter unit and the porous ceramic plate filter unit are arranged at intervals along the water flow direction in the casing; the top of the casing is provided with a light source 201 and a water inlet 202, and the bottom is provided with a water outlet 213; The light source 201 is a full-spectrum light bulb, which provides a light source for the coating on the inner surface of the 1st porous pottery pot, which helps to exert its photocatalytic performance; When the pollutants enter the tank, it is convenient for external light to enter the tank through the lid; the water outlet 213 is provided with a water outlet valve;

[0064] The battery area 203, as a part of the cover, is equipped with a battery, and is connected with the first vibrating plate, the second vibrating plate, and the full-spectrum bulb through the internal circuit in the cov...

Embodiment 3

[0070] Figure 4 The design capacity of the first porous clay pot is 6-8L. The pentavalent arsenic solution (1-100 mg / L) was added to the first porous earthenware pot. The concentration of pentavalent arsenic in the water is detected, and then the removal rate of pentavalent arsenic by the device is 85-99% through calculation. Calculated as follows:

[0071]

[0072] When the incoming water contains 10 3 ~10 6 When the concentration of Escherichia coli is cfu / mL, the concentration of Escherichia coli in the effluent is less than 1 cfu / mL, and it is calculated that the removal rate of Escherichia coli by this device is greater than 99%.

[0073] In addition, various pollutants were added to deionized water to prepare water to be treated containing various pollutants, including 10-50 cfu / mL Escherichia coli, 1.5 mg / L 1,2-dichlorobenzene, 0.8 mg / L of xylene, 1.2 mg / L of toluene, 0.1 mg / L of arsenic, and 1.5 mg / L of fluoride. Press the switch button 204 to turn on the UV...

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Abstract

The invention discloses a multi-stage serial filtering system composed of a porous ceramic filter and a preparation method thereof, which belong to the technical field of water quality purification and filtration. The multi-stage series filter system is surrounded by a housing, and a porous ceramic tank and a porous ceramic plate filter unit are arranged in the housing; the porous ceramic filter unit is composed of the I porous ceramic tank and the II porous ceramic tank; the porous ceramic plate filter unit is composed of the I The porous ceramic plate and the second porous ceramic plate are composed; the filter unit is filled with a mixed filter material layer embedded with ultrasonic vibrating pieces; along the direction of water flow, it passes through the inner and outer surfaces of the first porous ceramic pot and the second porous pottery pot in turn, and the first porous pottery pot Silver / zinc oxide / carbon nanotube nanocomposite particle coating and carbon-nitrogen-doped hexagonal wurtzite nano-zinc oxide are loaded on the inner and outer surfaces respectively; the surface of the second porous ceramic pot is loaded with volcanic rock-based carbon-nitrogen-doped nano-zinc oxide Particle composite coating. It exerts photocatalytic performance under light, degrades organic pollutants in water and inactivates microorganisms.

Description

technical field [0001] The invention belongs to the technical field of water purification and filtration, and in particular relates to a multi-stage serial filtration system composed of porous ceramic filters and a preparation method. Background technique [0002] The quality of drinking water directly affects human health. However, there are still many families in the world who do not have access to safe drinking water, especially in remote and impoverished areas in some developing countries. These areas lack centralized sewage treatment facilities and often do not have qualified sewage treatment plants. As a result, polluted surface water and groundwater are consumed by the inhabitants of these areas without treatment. However, there are a large number of pathogenic microorganisms, various organic pollutants and various heavy metals in these polluted water bodies. These pollutants seriously threaten human health. Therefore, it is of great significance to develop a dome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08C04B41/85C04B41/88C02F101/20C02F101/30
CPCC02F9/00C04B41/5116C04B41/5049C04B41/85C04B41/88C04B41/009C02F1/001C02F1/30C02F1/725C02F1/325C02F1/283C02F1/28C02F1/66C02F1/68C02F2305/10C02F2303/20C02F2101/30C02F2101/20C04B41/5001C04B41/4543C04B38/00C04B35/00
Inventor 黄敬黄国和姚尧张鹏陈秀娟吴宇炜赵凯爱德华·马克宾
Owner BEIJING NORMAL UNIVERSITY
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