WO2006105730A1

WO2006105730A1 - Water treatment module and water treatment apparatus using thereof

Info

Publication number: WO2006105730A1
Application number: PCT/CN2006/000603
Authority: WO
Inventors: Delin Zhang; Panting Xue
Original assignee: 72G Group Limited
Priority date: 2005-04-05
Filing date: 2006-04-05
Publication date: 2006-10-12
Also published as: CN1847159A

Abstract

The invention discloses a water treatment module and a water treatment apparatus using thereof. The water treatment module is designed to be a water treatment pacted bed containing a frame with a intermediate cavity in which an ultraviolet light resource is laid. And dodecahedral sponge packings with a metallic net-like skeleton structure are laid in said frame. The water treatment apparatus contains a cavity, which includes an inlet and an outlet, for accommodating said water treatment module. The water treatment apparatus includes several water treatment modules, which are arranged like building block. In the present invention, large specific surface area of the sponge packings can be obtained, and it’s easy to reuse TiO2 supported on the surface of the sponge packings.

Description

Water treatment module and water processor using the same

The present invention relates to the treatment of domestic or industrial water, and more particularly to a water treatment module and a water processor employing the same. Background technique

The photocatalytic properties of titanium dioxide were discovered by Professor Sakamoto Fujiaki in 1972 and have been widely studied and applied so far. The basic principle of photocatalysis is: When semiconductor oxide (such as titanium dioxide) nanoparticles are irradiated by photons larger than the band gap energy, electrons transition from the valence band to the conduction band, resulting in electron-hole pairs, and electrons are reductive. The hole is oxidizing, and the 0H-reaction of the hole with the surface of the oxide semiconductor nanoparticle generates a highly oxidizing 0H radical, and the active 0H radical can oxidize many refractory organic substances to (0 ₂ and 11 ₂ 0 And other inorganic substances.

Nano-TiO2 can be widely used in photocatalytic degradation of dye wastewater, pesticide wastewater, surfactant, nitrogen-containing organic matter, chloride, freon, industrial pickling wastewater and oily wastewater, and degrade it into C0 ₂ , H ₂ 0 and other small It is divided into inorganic substances to realize the function of purifying sewage.

At the same time, nano titanium dioxide has strong antibacterial properties and has strong lethality against Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus and fungi.

At present, the titanium dioxide photocatalytic reactor for treating wastewater can be divided into a suspension system and a fixed system, which can be used for the treatment of organic matter in industrial wastewater and domestic wastewater. The suspension system directly mixes the nano titanium dioxide with the organic pollutant waste liquid and evenly disperses it by stirring or air blowing. The disadvantage of treating waste water with a suspension system photocatalytic reactor is that it can only be treated once, and titanium dioxide is difficult to recycle and should not be reused. The fixed system is to load nano titanium dioxide on the carrier for continuous treatment of contaminants and can be reused. However, the conventional fixed system photocatalytic reactor has a small contact specific surface area, so the efficiency of treating water is low. In addition, both of the above systems are difficult to promote in large scale in water treatment due to their low degree of industrialization. Summary of the invention

The object of the present invention is to provide a contact specific surface area, high processing efficiency, and easy to large The water treatment module used for scale promotion and the water processor using the module.

In order to achieve the above, the present invention adopts the following technical solutions:

A water treatment module, comprising:

a water treatment packed bed comprising a frame structure and a metal mesh skeleton structure sponge filler body filled in the frame, the inner surface of the frame structure forming at least one cavity; at least one ultraviolet light source disposed at the Inside the cavity.

Preferably, the filler body comprises a skeleton structure and a twelve-sided three-dimensional metal mesh structure sponge filler filled in the skeleton structure, and the surface of the sponge filler is loaded with anatase type titanium dioxide nano material.

Preferably, the frame structure is a columnar body having a rectangular shape in a horizontal cross section, or a columnar body having a circular or elliptical shape in a horizontal cross section, or a columnar shape having an irregular or regular polygonal shape in a horizontal cross section. body.

Preferably, the ultraviolet light source is any one or a combination of a medium pressure ultraviolet lamp, a high pressure mercury lamp, a black light lamp, and an ultraviolet germicidal lamp. More preferably, the ultraviolet light source has a wavelength between 380 nm and 250 nm.

A water processor, comprising:

A chamber having at least one water inlet and at least one water outlet; at least one water treatment module according to any one of claims 1-7, disposed in the chamber.

Preferably, the water inlet or the water outlet is connected by a water pipe, and the position of the water inlet is not lower than the position of the water outlet.

Preferably, the number of the water treatment modules is at least two and separated from each other by a sealing plate, and the cavity is further provided with a protective cover. In the above technical solution of the present invention, the water treatment module is designed as a water treatment packed bed, the water treatment packed bed is a frame structure having a cavity in the middle, and the filler bed is filled with a metal mesh skeleton structure sponge filler body, The ultraviolet light source is placed in a cavity in the water treatment packed bed. The water processor includes a cavity for accommodating the module in the environment, the cavity has a water inlet and a water outlet, and the water treatment module is fixedly disposed in the cavity. Therefore, it can be seen that the water treatment module of the present invention is designed to be modular, and the water processor is arranged by a combination of several water treatment modules. As with building blocks, the degree of industrialization has been greatly improved, and it is easy to be widely used; In addition, it overcomes the dioxin treatment of wastewater in suspension system photocatalytic reactor Titanium is difficult to recycle and should not be reused. It also overcomes the shortcomings of the fixed system photocatalytic reactor with small contact surface area and low efficiency of water treatment. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view showing the structure of a water treatment module of the present invention.

Figure 2 is a top plan view of Figure 1.

3 is a schematic cross-sectional view showing another embodiment of the water treatment module of the present invention.

Figure 4 is a top plan view of Figure 3.

Figure 5 is a cross-sectional view showing still another embodiment of the water treatment module of the present invention.

Figure 6 is a top plan view of Figure 5.

Figure 7 is a cross-sectional view showing still another embodiment of the water treatment module of the present invention.

Figure 8 is a top plan view of Figure 3.

Figure 9 is a schematic cross-sectional view showing a water treatment structure involved in the water treatment module of the present invention. Figure 10 is a side view, half cross-sectional view of the structure of Figure 9.

Figure 11 is a top plan view of Figure 9.

Figure 12 is a cross-sectional view showing the structure of another embodiment of a water processor designed using the water treatment module of the present invention.

Figure 13 is a side view, half cross-sectional view of the structure of Figure 12.

Figure 14 is a top plan view of Figure 12.

Figure 15 is a cross-sectional, cross-sectional view showing still another embodiment of a water processor designed using the water treatment module of the present invention.

Figure 16 is a side view, half cross-sectional view of Figure 15.

Figure 17 is a top plan view of Figure 15.

Figure 18 is a cross-sectional view showing the structure of a water processor designed using the water treatment module of the present invention.

Figure 19 is a side view, half cross-sectional view of Figure 18.

Figure 20 is a top plan view of Figure 18. detailed description

In order to further explain the above objects, technical solutions and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

Example 1 Please refer to Figure 1, Figure 2,

In this embodiment, the water treatment module 10 includes:

A water treatment packed bed 11, the water treatment packed bed 11 comprises a frame structure having a cavity 12 in the middle, the frame structure is filled with a metal mesh skeleton structure sponge filler body, and the frame structure of the water treatment packed bed 11 is a horizontal section a columnar body having a rectangular shape;

An ultraviolet light source 13 and an ultraviolet light source 13 are inserted into the cavity 12 in the water treatment packed bed 11. Example 2

Please refer to Figure 3 and Figure 4,

In this embodiment, the water treatment module 10 includes:

A water treatment packed bed 11, the water treatment packed bed 11 comprises a frame structure having a cavity 12 in the middle, the frame structure is filled with a metal mesh skeleton structure sponge filler body, and the frame structure of the water treatment packed bed 11 is a columnar body having a circular or elliptical shape (not shown) in a horizontal cross-sectional shape;

An ultraviolet light source 13 and an ultraviolet light source 13 are inserted into the cavity 12 of the water treatment packed bed 11. Example 3

Please refer to Figure 5 and Figure 6,

In this example, the water treatment module 10 includes:

A water treatment packed bed 11, the water treatment packed bed 11 comprises a frame structure having a cavity 12 in the middle, the frame structure is filled with a metal mesh skeleton structure sponge filler body, and the frame structure of the water treatment packed bed 11 is A columnar body having a horizontal cross-sectional shape is a long-shaped column; wherein three ultraviolet light sources 13 are inserted into the cavity 12 in the water-treated packing bed 11, and of course, a plurality of ultraviolet light sources can be inserted as needed. Example 4

Please refer to Figure 7 and Figure 8,

The structure of the water treatment module 10 illustrated in this embodiment is substantially the same as that of the embodiment 3, and three ultraviolet light sources 13 are inserted into the cavity 12 in the water treatment packed bed 11, the difference being that each ultraviolet There is a partition between the light sources 13, of course, the ultraviolet light source The quantity can also be set as needed.

Of course, the horizontal cross-sectional shape of the frame structure of the water-treated packed bed 11 may also be an irregular or regular polygonal columnar body.

The ultraviolet light source of the above embodiments is any one of a medium pressure ultraviolet lamp, a high pressure mercury lamp, a black light lamp, an ultraviolet germicidal lamp, and the like. It should be noted that the water treatment packed bed 11 is composed of two parts, one part is a dodecahedral metal mesh skeleton structure sponge filler body, and the dodecahedral metal mesh skeleton structure sponge filler body is filled in the packed bed 11; The other part is the frame structure of the filler body. The frame structure is composed of some rigid support members, and its function is to fix and support the dodecahedral metal mesh skeleton structure sponge filler body. The surface of the dodecahedral metal mesh skeleton sponge filler is loaded with anatase (Anatase, abbreviated as A type) titanium dioxide nanomaterial, and forms an unfixed structure, durable and not easy to fall off. The anatase titanium dioxide nanomaterial The thickness is from 1 nm to 200 nm. The dodecahedral metal mesh skeleton sponge filler has a thickness ranging from 1 ~m to 20 亳m, a number of pores of 3 ppi to 100 ppi, and a specific surface area of 50 times to 200 times that of a half plane filler, and can be 900 m 2 /m 3 . ~ 18000m2/m3. The sponge filler is commercially available as an anatase nano titanium dioxide metal sponge, which is manufactured by Metaloam Products Inc. under the model MP-Ti-05, and the related art has been patented. The metal body weight density of the filler body is generally 350 g/m2 or more. The distance from the outer wall of the lamp source of the ultraviolet light source 13 to the filler body is generally from 1 ~m to 200 亳m. The ultraviolet light source 13 can provide stable and continuous ultraviolet light for the photocatalytic action of the nano TiO 2 , and the wavelength of the ultraviolet light source is generally defined as Between 380naT250nm, the ultraviolet light source 13 can be selected from high-pressure mercury lamp, black light lamp and ultraviolet germicidal lamp. The ultraviolet light source 13 is supplied by the inverter power supply DC6V-12V or AC120V, AC220V, and the high-frequency power supply is passed through the light source according to the light source. The length, lamp power and UV intensity are different. The tube voltage can be from 100V to 1500V, or higher, and the frequency is generally above 20Khz. Nano-titanium dioxide produces strong oxidizing ability under ultraviolet light irradiation, and can quickly and effectively decompose various pollutants in sewage. The photocatalytic reaction speed is fast. The water processor designed with the above water treatment module is described as follows: Please continue to refer to Figure 9 - Figure 11,

In this embodiment, the water processor 20 includes:

a cavity 21 of the water treatment module 10, the cavity 21 has a water inlet 11 and a water outlet 23;

Nine water treatment modules 10 are fixedly disposed in the above-mentioned cavity 21, nine water treatment modules 10 are regularly arranged, and each water treatment module 10 adopts the shape shown in Embodiment 1 of the above water treatment module. The water inlet 22 and the water outlet 23 are at the same horizontal position. Example 6

Please continue to refer to Figure 12 - Figure 14,

The water processor 20 shown in this embodiment is basically the same as that shown in the example 5, but the water treatment module 10 employed is in the shape of the embodiment 3. Example 7

Please refer to Figure 12-17,

In this embodiment, the water processor 20 includes:

a chamber 21 of the water treatment module 10, the chamber 21 has a water inlet 22 and a water outlet 23;

Thirty-six water treatment modules 10 are fixedly disposed in the above-mentioned cavity 21, thirty-six water treatment modules 10 are regularly arranged, and each water treatment module 10 is also in the shape shown in Embodiment 1 of the above water treatment module. However, the water inlet 11 and the water outlet 23 are located at different horizontal positions, and the horizontal position of the water inlet 22 is higher than the position of the water outlet 23.

In this embodiment, the volume of the packed bed is relatively large, the residence time of the water to be treated in the packed bed is longer, the water treatment capacity is improved, the water inlet and the water outlet are not at the same level, and the water flow is increased in the packed bed. The distance of flow in the middle also increases the contact treatment time between the water flow and the packed bed. Example 8

Please refer to Figure 18-20,

In this embodiment, the water processor 20 includes:

A cavity 21 of the water treatment module 10, the cavity 21 has a water inlet 22 and a water outlet 23: Thirty-six water treatment modules 10 are fixedly disposed in the above-mentioned cavity 21, thirty-six water treatment modules 10 are regularly arranged, and each water treatment module 10 is also in the shape shown in Embodiment 1 of the above water treatment module. The water inlet 22 and the water outlet 23 are at the same horizontal position, but the water inlet 22 and the water outlet 23 are located at a higher horizontal position.

In this embodiment, the volume of the packed bed is also relatively large, the residence time of the water to be treated in the packed bed is longer, and the water treatment capacity is improved, the water inlet and the water outlet are on the same horizontal surface, but in the middle of the packed bed. The upper portion is separated and the flow of water passes from the lower portion of the baffle, which increases the distance the water flows in the packed bed and also increases the contact treatment time between the water flow and the packed bed. In various embodiments of the water processor, a plurality of water treatment modules in the chamber

10 is arranged regularly, but irregular arrangements can also be used.

In addition, a sealing plate 24 is disposed between the water treatment modules 10, and the cavity 21 is further provided with a protective cover 25.

Each of the processing modules 10 in the water processor is independently placed and fixed. When needed, they can be separately taken out for maintenance or replacement. The entire water processor can be placed in the pipeline of the waterway, and needs to be cleaned. Water flows in from the water inlet. When passing through the water treatment modules, the photocatalytic action of the nanometer titanium dioxide loaded with the pollutants through the packed bed is quickly and efficiently treated, and then exits from the water outlet to the downstream. More water treatment modules can be placed in the water processor to increase online water treatment. Multiple online water handlers can also be connected in series to the water line to improve water treatment.

The water treatment of the present invention can be placed in a pipeline in a distributed manner to effect on-line processing of water, so that it is not necessary to concentrate on the treatment. In the arrangement of the waterway, multiple online water processors can be arranged at a certain distance, such as 100 meters, the number of modules in the water in the online water processor, and the separation distance between the water processors can be It is determined based on actual conditions such as the flow rate of the water body, the pollution situation, and the effect that the purification process needs to achieve.

Due to the high specific surface area of the foam filler in the water treatment module, the surface area of the surface-loaded nano-titanium dioxide in contact with the water body is greatly increased, and the efficiency of water treatment is improved, so that the online treatment of water can be completely realized.

In addition, the water treatment module and the water processor of the present invention are modular, modularized and placed, easy to assemble and disassemble, more economical and comparable in volume production, and can be serialized and packaged in design and manufacture. In each application, no special customization is required Instead, it is obtained by selecting a suitable combination of standard modules.

Of course, those skilled in the art should understand that the above embodiments are only for illustrating the present invention, and are not intended to be limiting of the present invention, as long as it is within the scope of the spirit of the present invention. Variations and modifications of the invention are intended to fall within the scope of the appended claims.

Claims

Rights request

A water treatment module, comprising:

2. The water treatment module according to claim 1, wherein the filler body comprises a skeleton structure and a twelve-sided three-dimensional metal mesh structure sponge filler filled in the skeleton structure, a surface of the sponge filler Loaded with anatase titanium dioxide nanomaterials.

The water treatment module according to claim 2, wherein the frame structure is a columnar body having a rectangular cross section and a rectangular shape.

The water treatment module according to claim 2, wherein the frame structure is a columnar body having a circular or elliptical shape in a horizontal cross section.

The water treatment module according to claim 2, wherein the frame structure is a columnar body having an irregular or regular polygonal shape in a horizontal cross section.

The water treatment module according to any one of claims 1 to 5, wherein the ultraviolet light source is any one or a combination of a medium pressure ultraviolet lamp, a high pressure mercury lamp, a black light lamp, and an ultraviolet germicidal lamp. .

7. The water treatment module according to claim 6, wherein the ultraviolet light source has a wavelength between 38011111 and 250 Å.

8. A water processor, comprising:

9. The water processor according to claim 8, wherein the water inlet or the water outlet is engaged by a water pipe, and the position of the water inlet is not lower than a position of the water outlet.

The water processor according to claim 8 or 9, wherein the number of the water treatment modules is at least two and separated from each other by a sealing plate, and the cavity is further provided with a protective cover.