CN216998057U - A device for the combined treatment of sewage with photocatalysis and microorganisms - Google Patents

Abstract

The utility model discloses a device for treating sewage by combining photocatalysis and microorganisms, which comprises: the photocatalytic treatment unit comprises a plurality of stages of photocatalytic filtering structures which are sequentially communicated, and a photocatalytic material is arranged in each stage of photocatalytic filtering structure; the microorganism treatment unit comprises a plurality of stages of microorganism filtering structures which are sequentially communicated, and biological filler is arranged in any stage of microorganism filtering structure; the sewage water inlets of the plurality of stages of microorganism filtering structures are communicated with the sewage water outlets of the plurality of stages of photocatalytic filtering structures; the sewage of the microorganism treatment unit is circularly sent to the photocatalysis treatment unit through the water lifting unit for cyclic deepening treatment; and the biological water tank is communicated with the plurality of purified water discharge ports of the microbial filtering structure. The device has the advantages of simple structure, high treatment efficiency, low cost, environmental friendliness, convenience in use and the like, and has a good application prospect in the field of sewage treatment.

Description

A device for the combined treatment of sewage with photocatalysis and microorganisms

technical field

The utility model belongs to the technical field of sewage treatment, and relates to a device for treating sewage in combination with photocatalysis and microorganisms.

Background technique

With the rapid development of modern society, a large amount of industrial and agricultural sewage is discharged into natural water bodies. Such inputs can cause a range of hazards to the aquatic environment, such as water eutrophication and the growth of harmful algal blooms. Furthermore, when these contaminated waters become a source of drinking water, human health can be severely affected. At present, general sewage treatment methods can be roughly divided into three categories: physical methods (precipitation, filtration, evaporation, etc.), chemical methods (neutralization, extraction, redox, etc.) and biological methods. However, each of the above methods has its own scope of adaptation, and it is often difficult to achieve a good governance effect with one method. Therefore, it is necessary to learn from each other's strengths and complement each other.

In recent years, tightly coupled photocatalysis and biodegradation (ICPB) has attracted a lot of attention in water treatment. As an environment-friendly technology, photocatalysis mainly utilizes sunlight to excite narrow-bandgap semiconductor catalysts to generate photogenerated charge carriers. The redox reaction can be carried out directly on the surface of the catalyst, and it has the characteristics of mild reaction conditions, greenness and high efficiency. Compared with a single photocatalytic system, ICPB can avoid the direct release of photocatalyst into water and can be easily removed from water, so it has little impact on the environment.

It is extremely necessary for those skilled in the art to provide a novel sewage treatment system that combines photocatalysis technology and biological treatment. The system needs to meet the requirements of simple structure, low cost, environmental friendliness and convenience in use, and to give full play to the combined advantages of photocatalysis and biological treatment. , improve the sewage purification effect.

SUMMARY OF THE INVENTION

In view of the above-mentioned deficiencies in the prior art, the present utility model aims to provide a device for the combined treatment of sewage by photocatalysis and microorganisms, which can carry out the coupling treatment of photocatalytic oxidation reaction and microbial nitrification and filtration on sewage, so as to realize simple structure, high treatment efficiency, The advantages of low cost, environmental friendliness and convenient use, etc., have a good application prospect in the field of sewage treatment.

In order to provide a device for treating sewage in combination with photocatalysis and microorganisms, the technical scheme adopted in the present invention is as follows:

A device for treating sewage in combination with photocatalysis and microorganisms, comprising:

a photocatalytic treatment unit, the photocatalytic treatment unit includes several stages of photocatalytic filtering structures connected in sequence, and any photocatalytic filtering structure at any stage has a built-in photocatalytic material for photocatalytic treatment of sewage;

Microbial treatment unit, the microbial treatment unit includes several stages of microbial filtration structures that are connected in sequence, and any stage of microbial filtration structure has built-in biological fillers; the sewage water inlet of several stages of microbial filtration structures and the sewage outlet of several stages of photocatalytic filtration structures The water outlet is connected to carry out biodegradation treatment on the sewage after photocatalytic treatment by attaching microorganisms; the sewage of the microorganism treatment unit is circulated and sent to the photocatalytic treatment unit through the water extraction unit for cyclic deepening treatment;

The biological water tank is communicated with the purified water drainage port of the several-stage microbial filtering structure.

Preferably, the several-stage photocatalytic filtering structure includes a first shell, and several stages of support frames I arranged in a vertical direction in the first shell; any stage of the support frame I is correspondingly placed relative to the first shell Body drawable stuffing drawer I;

The packing drawer I includes the bottom plate I and the surrounding side panels I; any level of the packing drawer I is provided with a material blocking and overflowing board I, and the material blocking and overflowing board I is respectively opposite to the two side panels of the packing drawer I along the pulling direction. Ⅰ encloses a packing cavity Ⅰ for built-in photocatalytic material and a drainage cavity Ⅰ for sewage drainage; the height of the material blocking and overflow board Ⅰ is lower than the side board Ⅰ of the stuffing drawer Ⅰ, and corresponds to the bottom plate Ⅰ of the drainage cavity There is a drainage hole I on it.

Further, the several-stage microbial filtering structure includes a second shell located on the lower side of the first shell, and several stages of support frames II arranged in the vertical direction in the second shell; the support frame II of any stage Correspondingly, a stuffing drawer II that can be pulled out relative to the second shell is placed on it;

The stuffing drawer II includes the bottom plate II and the surrounding side plates II; any level of the stuffing drawer II is provided with a material blocking and overflowing board II, and the material blocking and overflowing board II is respectively opposite to the two side boards of the stuffing drawer II along the pulling direction. II encloses a packing cavity II for built-in biological fillers and a drainage cavity II for sewage drainage; the height of the material blocking and overflow plate II is lower than the side plate II of the stuffing drawer II, and corresponds to the bottom plate II of the drainage cavity. A through drain hole II is provided.

Further, in the several-stage stuffing drawers I and several-stage stuffing drawers II, the drainage holes I and the drainage holes II located between the upper and lower layers are arranged in dislocation.

Further, the several-stage microbial filtration structure also includes a trickling filter cartridge arranged under the second shell, and a water distribution plate and a supporting plate are respectively placed in the dripping filter cartridge along the height direction. A filler cavity for built-in elastic fiber filler is formed between the support plates, and a plurality of water passage holes are provided on the water distribution plate and the support plate;

The trickling filter cartridge is provided with a water storage cavity on the lower side of the support plate, and the sewage in the water storage cavity is circulated and sent to the photocatalytic treatment unit through the water extraction unit.

Further, the water-lifting unit includes a pump arranged in the water storage cavity, the water-distributing plate and the support plate are provided with a grommet sleeve, and the upper side of the water-distributing plate is connected to the adjacent filler. A water outlet cavity is formed between the bottom plates II of the drawer II; the pump passes through the protective wire sleeve through a water delivery hose, and the water outlet chamber extends outward to the sewage water inlet of the stuffing drawer I.

Further, the first casing and the second casing are integrally arranged, and are fixedly connected with the trickling filter cartridge.

Further, the water delivery hose is also suspended above the water distribution plate through a water return hose with a control valve.

Further, a drain valve is also provided on the side wall of the cylinder body of the water storage cavity.

Further, the biological water tank is sleeved on the outer periphery of the bottom of the trickling filter cartridge, and a plurality of plant hydroponics floating plates are arranged in the cavity between the biological water tank and the trickling filter cartridge.

Utilizing the above-mentioned device of the present utility model can also provide a method for treating sewage in combination with photocatalysis and microorganisms, comprising the following steps:

1) Sewage enters several stages of photocatalytic filtering structures and contacts with photocatalytic materials step by step, and is degraded by strong oxidation reaction under the excitation of light source radiation;

2) After the photocatalytic reaction, the sewage flows into several stages of microbial filtration structures, and is gradually nitrified and degraded by the biological fillers attached to the microorganisms;

And, control the lifting unit according to the demand to return the water after the microbial nitrification and filtration to the photocatalytic treatment unit for recirculation to carry out the sequential advanced treatment of photocatalytic oxidation and microbial degradation;

3) After advanced treatment, the water is discharged into the biological water tank for the organism to absorb the residue and test the water quality.

Preferably, in step 1), the sewage enters the packing drawer I of the photocatalytic filtering structure step by step, and the packing drawer I is separated by the material blocking and overflowing plate I to form a packing cavity I and a drainage cavity I, and the sewage is in the packing cavity I and the photocatalytic filtration. When the material contacts, under the radiation excitation of the light source, it is degraded by a strong oxidative reaction;

In step 2), after the photocatalytic reaction, the sewage overflows from the material blocking and overflowing plate I into the drainage cavity I, and flows into the packing tray II of the microbial treatment unit step by step through the drainage holes I on the bottom plate of the packing tray I, and the blocking material passes through the packing tray II. The overflow plate II is separated to form the packing cavity II and the drainage cavity II. After the sewage is nitrified and degraded with the biological filler in the packing cavity II, it overflows from the material blocking overflow plate II into the drainage cavity II; after the microbial nitrification and filtration, the water passes through the bottom plate of the packing drawer II. Drainage hole II flows into the water distribution plate, and falls into the dripping filter cartridge on the lower side of the filler drawer II through the water hole, and continues to collide with the elastic fiber filler, releasing carbon dioxide and dissolving oxygen, and at the same time, it is simultaneously nitrified and degraded by the microorganisms attached to the elastic fiber filler. ;

In addition, the water after drip filtration is concentrated at the bottom of the drip filter cartridge through the support plate, and the pump in the water lifting unit is controlled to be turned on so that the water after drip filtration is lifted and sent back to the stuffing drawer I for circular deepening treatment.

More preferably, in step 2), the water delivery hose is also connected with a return water hose with a control valve, and by opening the control valve, the drip-filtered water is synchronously lifted through the return hose and sent back to the drip filter cartridge for circular deepening treatment. .

The utility model can bring the following beneficial effects:

1) The present utility model adopts the combined treatment technology of photocatalytic oxidation reaction and microbial nitrification filtration for the sewage to be treated, and the photocatalysis and microbial nitrification can be respectively set as multi-level, so as to realize the multiple and deep degradation of water pollutants, and improve the purification treatment. Effect.

2) Both the photocatalytic treatment unit and the microbial treatment unit of the present invention adopt a drawer-type filter structure in which the casing is combined with the stuffing drawer and the support frame. Oxidation, nitrification and filtration, and the microbial treatment unit also adopts a trickling filter cartridge structure. According to this, the drawer filter structure is used for immersion filtration combined with dripping filter cartridge dripping filtration. After microbial nitrification and filtration, the water falls evenly through the dripping filter cartridge through the water distribution plate. Inside, it collides and scatters with the elastic fiber filler, releases carbon dioxide and dissolves in oxygen, and is simultaneously nitrified and degraded by the microorganisms attached to the filler; so that the immersed filtering medium (pollutants, photocatalytic materials, microorganisms) is fully contacted, and dripping Filtered gas exchange (releasing carbon dioxide in water droplets while inhaling oxygen in the air) increases the efficiency of microbial treatment. Moreover, the drawer-type filter structure is helpful for stacking the components, saving floor space and improving efficiency.

3) Utilize the device of the present utility model to carry out the filtering sequence of photocatalysis and biodegradation to sewage, and photocatalysis can be carried out step by step for many times according to requirements, and the same is true for microbial degradation. Therefore, for the treatment after photocatalysis and biodegradation, It only needs to carry out water extraction once, and the energy consumption efficiency is very good, and the drawer structure makes the cleaning and replacement of filter materials more convenient.

4) The photocatalytic treatment unit, the microbial treatment unit and the biological tank of the present invention can adopt an integrated equipment structure, which saves more space and improves the treatment efficiency.

To sum up, the utility model has the advantages of compact structure, convenient use and high efficiency; at the same time, the technological process implemented by the device is reasonable, simple, and has obvious environmental protection advantages, which is suitable for experimental applications in the field of photocatalytic environmental research, and can also be used for polluted water bodies. Purification treatment.

Description of drawings

FIG. 1 is a schematic diagram of the structure of the device for the combined treatment of sewage with photocatalysis and microorganisms of the present invention.

FIG. 2 is a schematic top view of the structure of the device of the present invention.

The meanings of the symbols in the figure are:

1-photocatalytic treatment unit; 10-photocatalytic filtering structure, 11-photocatalytic material, 12-top light source; 13-water inlet valve; 100-first shell, 101-support frame I, 102-stuffing drawer I, 103- Material blocking overflow plate I, 104- Drainage hole I, 105- Quartz glass;

2-microbial treatment unit; 20-microbial filter structure, 21-biological filler, 22-elastic fiber filler; 200-second shell, 201-support frame II, 202-stuffing drawer II, 203-material blocking overflow board II, 204-Drainage hole II, 205-Drip filter cartridge, 206-Water distribution plate, 207-Support plate, 208-Water hole, 209-Water storage cavity, 210-Wire protection sleeve, 211-Water outlet cavity, 212- Drain valve;

3-water lifting unit, 30-control valve, 31-pump, 32-water delivery hose, 33-water return hose;

4- Biological tank, 40- Hydroponics floating board.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

In order to make the drawings concise, only the parts related to the present invention are schematically shown in each drawing, and they do not represent the actual structure of the product.

According to an embodiment provided by the present utility model, as shown in FIG. 1 , it is a device for treating sewage in combination with photocatalysis and microorganisms, including:

A photocatalytic treatment unit 1, the photocatalytic treatment unit 1 includes several stages of photocatalytic filter structures 10 connected in sequence, and any stage of the photocatalytic filter structure 10 has a built-in photocatalytic material 11 for photocatalytic treatment of sewage;

Microbial treatment unit 2, the microorganism treatment unit 2 includes several stages of microbial filter structures 20 connected in sequence, and any stage of microbial filter structure 20 has built-in biological fillers 21; The sewage water outlet of the filter structure is connected to be used for further biodegradation treatment of the sewage after photocatalytic treatment by microorganisms attached to the biological filler; Carry out cycle deepening processing;

The biological water tank 4 is in communication with the purified water drainage ports of the several-stage microbial filtering structures 20 .

This embodiment provides a device that can perform multi-stage photocatalysis and microbial combined treatment for sewage, and the sewage after microbial treatment can also be returned to the photocatalytic treatment unit for recycling and purification, and the purified water can also be purified by the setting of a biological water tank. make full use of it. A closed-loop deep purification treatment of sewage is formed to improve the treatment effect of sewage.

According to the device provided in this embodiment, a method for treating sewage in combination with photocatalysis and microorganisms can also be implemented, including the following steps:

1) Sewage enters into several stages of photocatalytic filter structure 10 and contacts with photocatalytic material 11 step by step, and is degraded by strong oxidation reaction under the excitation of light source 12 radiation;

2) After the photocatalytic reaction, the sewage flows into the several-stage microbial filter structure 20, and is gradually nitrified and degraded by the biological filler 21 attached to the microorganisms;

In addition, the lifting unit 3 is controlled according to the demand, so that the water after microbial nitrification and filtration is returned to the photocatalytic treatment unit 1 to be recirculated for further advanced treatment in the order of photocatalytic oxidation and microbial degradation;

3) After advanced treatment, the water is discharged to the biological water tank 4 for the organism to absorb the residue and check the water quality.

As a preferred embodiment:

For the photocatalytic treatment unit, the following specific structure is adopted:

The several-stage photocatalytic filtering structure 10 includes a first housing 100, and several levels of support frames I101 arranged in the vertical direction in the first housing 100; any level of the support frame I101 is correspondingly placed relative to the first The drawable stuffing drawer I102 of the shell 100;

The stuffing drawer I102 includes the bottom plate and the surrounding side panels; any level of the stuffing drawer I102 is provided with a material blocking and overflowing board I103, and the material blocking and overflowing board I103 and the packing drawer I102 along the pulling direction S on the opposite sides of the plate surrounds. A packing cavity I for built-in photocatalytic material and a drainage cavity I for sewage drainage are formed; the height of the material blocking and overflow plate I103 is lower than the side plate I of the stuffing drawer I102, and corresponds to the bottom plate I of the drainage cavity I. A drain hole I104 is provided.

More preferably, the top of the first housing 100 is inlaid or set as quartz glass for transmitting the light source to the photocatalytic material in the stuffing drawer I102. In addition, when the support frame I101 and the stuffing drawer I102 are correspondingly set in multiple stages along the vertical direction, the bottom plate in the stuffing drawer I102 for transmitting the light source to the photocatalytic material is inlaid or set to quartz glass 105; or the stuffing drawer I102 is a transparent structure .

For the microbial treatment unit, the following specific structure is adopted:

The several-stage microbial filtering structure 20 includes a second shell 200 located on the lower side of the first shell 100, and several stages of support frames II 201 arranged in the vertical direction in the second shell 200; any stage of the support A stuffing drawer II 202 that can be pulled out relative to the second housing 200 is correspondingly placed on the frame I201;

The stuffing drawer II 202 includes the bottom plate II and the surrounding side plates II; any level of the stuffing drawer II 202 is provided with a material blocking and overflowing board II 203, and the material blocking and overflowing board II 203 is on the opposite sides of the stuffing drawer II 202 along the pulling direction S, respectively. Plate II encloses a packing chamber II for built-in biological fillers and a drainage chamber II for sewage drainage; the height of the material blocking and overflow plate II 203 is lower than the side plate II of the stuffing drawer II 202, and corresponds to the bottom plate of the drainage chamber II II is provided with drainage holes II 204.

The above-mentioned several stages include "1-level" and "multi-level". For the photocatalytic filter structure 10, when the packing drawer I102 is set to be multi-level, the drainage holes I104 of the upper and lower packing drawers I102 are arranged in dislocation, so that the sewage Fully carry out photocatalytic treatment; similarly, for the microbial filtration structure 20, when the packing tray II 202 is set to be multi-stage, the drainage holes II 204 of the upper and lower packing trays II 202 are arranged in dislocation, so that the sewage can be fully processed by microbial nitrification and filtration; Between the catalytic filtering structure 10 and the microorganism filtering structure 20, the adjacent drainage holes I104 of the upper layer and the drainage holes II204 of the lower layer are arranged in dislocation. In addition, the middle parts of the support frame I101 and the support frame II201 are hollowed out to allow sewage to fall alternately from the drainage holes I104 and the drainage holes II204.

Based on the above, through the drawer filter structure composed of the shell, the support frame and the filler drawer, a one-stage or multi-stage photocatalytic filter structure and a one-stage or multi-stage microbial filter structure can be respectively formed, which is convenient for replacing the filler and is convenient to integrate. Stacked and placed; thus, on the basis of a more compact structure and less floor space, the photocatalytic filtering structure and the microbial filtering structure are used in combination to improve the purification effect.

As a more preferred embodiment, the several-stage microbial filtering structure 20 further includes a trickling filter cartridge 205 disposed under the second housing 200 , and a water distribution plate 206 and a support are respectively placed in the trickling filter cartridge 205 along the height direction. a plate 207, between the water distribution plate 206 and the support plate 207, the elastic fiber filler 22 with microorganisms is built in, and the water distribution plate 206 and the support plate 207 are provided with a number of water holes 208;

The trickling filter cartridge 205 is provided with a water storage cavity 209 on the lower side of the support plate 207 , and the sewage in the water storage cavity 209 is circulated and sent to the photocatalytic treatment unit 1 through the water extraction unit 3 .

Based on this embodiment, the above-mentioned drawer filter cabinet built-in filler immersion filtration is used in combination with the preferred dripping filter cartridge 205 for dripping filtration. After microbial nitrification and filtration, the water evenly falls into the dripping filter cartridge 205 through the water distribution plate 206, and the elastic fibers The filler 22 collides and scatters, releases carbon dioxide and dissolved oxygen, and is simultaneously nitrified and degraded by the microorganisms attached to the filler; thus, the submerged filtering medium (pollutants, catalysts and microorganisms) is fully contacted and exchanged with the dripping filtered gas (released). carbon dioxide in the water droplets, while inhaling oxygen in the air) to improve the efficiency of microbial treatment. Moreover, the drawer structure makes cleaning and replacement of various filter materials in the packing cavity more convenient. In addition, the water passage holes 208 are evenly spaced along the water distribution plate 206 and the support plate 207 .

Further, the water lifting unit 3 includes a pump 31 arranged in the water storage cavity 209 , and a wire protection sleeve 210 is penetrated through the water distribution plate 206 and the support plate 207 , and the wire protection sleeve 210 is made of The elastic rubber ring is fixed; the water outlet cavity 211 is formed between the upper side of the water distribution plate 206 and the bottom plate II of the adjacent packing drawer II 202; The cavity 211 extends outward to the sewage water inlet of the stuffing drawer I102, and the water delivery hose 32 is also suspended above the water distribution plate 206 through the return water hose 33 with the control valve 30. The power cord of the pump 31 can be extended to the outside through the protective wire sleeve 210 and the water outlet cavity 211 for electrical connection, and the protective wire sleeve 210 can protect the power wire in it from water. Therefore, by turning on the pump, the water at the bottom of the trickling filter cartridge 205 can be circulated back to the stuffing drawer I102 of the photocatalytic treatment unit 1 to perform photocatalytic treatment on the sewage circulation; the control valve 30 can also be opened to make the bottom of the trickling filter cartridge 205 The water flows back to the water outlet cavity, and then passes through the water distribution plate 206 for drip filtration again.

Based on this, the device of the present utility model is stacked to form a multi-stage structure, one-time water extraction of the process flow, and the energy consumption efficiency ratio is very good, so that the device has a reasonable and simple treatment process, a compact and practical structure, and is easy to use. With the characteristics of high efficiency and obvious environmental protection advantages, it can be used for the purification of polluted water bodies.

In addition, a drain valve 212 is also provided on the side wall of the cylinder body of the water storage chamber 210 , and the purified water can be discharged to the biological water tank 4 through the drain valve 212 .

In practical applications, the first housing 100 and the second housing 200 are integrally provided, and are fixedly connected to the trickling filter cartridge 205 . Therefore, the first shell 100, the second shell 200, the trickling filter cartridge 205 and the biological water tank are constructed by stacking up and down in sequence, which makes the device structure of the present invention more compact, saves floor space and improves purification efficiency. Specifically, the biological water tank 4 is sleeved on the outer periphery of the bottom of the trickling filter cartridge 210, and a plurality of plant hydroponics floating plates 40 are arranged in the cavity between the biological water tank 4 and the trickling filter cartridge 205, which can be used for cultivating plants to absorb nutrient residues quality, and use the growth status of plants and fish to test water quality. Wherein, the trickling filter cartridge 205 includes a surrounding side plate and a bottom plate, the side plate and the bottom plate are sealed into one body, and the upper flange of the trickling filter cartridge 205 is connected and fixed to the lower flange of the second housing 200 through a sealing ring and a fastener. , the water distribution plate 206 and the support plate 207 are respectively placed on the inside of the dripping filter cartridge 205 through the corners.

Based on the optimization of the above device embodiments, a method for treating sewage in combination with photocatalysis and microorganisms can be implemented, including the following steps:

Step 1), the sewage enters the packing drawer I102 of the photocatalytic filtering structure 10 of several stages step by step, and the packing drawer I102 is separated by the material blocking and overflowing plate I103 to form a packing chamber I and a drainage chamber I, and the sewage is mixed with the photocatalytic material in the packing chamber I. Contact, under the radiation excitation of the light source, it is degraded by a strong oxidative reaction;

Step 2), the sewage overflows from the material blocking and overflowing plate I103 into the drainage cavity I, and flows into the packing tray II 202 of several stages of the microbial filter structure 20 through the drainage holes I104 on the bottom plate of the packing drawer I102, and the material blocking and overflowing board passes through the packing tray II 202. Ⅱ203 is separated to form a packing cavity II and a drainage cavity II. After the sewage is nitrified and degraded with the biological filler in the packing cavity II, it overflows from the material blocking and overflow plate II203 into the drainage cavity II; after microbial nitrification and filtration, the water passes through the drainage holes on the bottom plate of the packing drawer II. II 204 flows into the water distribution plate 206, falls through the water distribution plate through the water hole 208 into the dripping filter cartridge 205 on the lower side of the filling drawer II 202, continues to collide with the elastic fiber filler 22, releases carbon dioxide and dissolves into oxygen, and is filled with elastic fibers at the same time. 22 synchronous nitrification and degradation of attached microorganisms;

In addition, the water after drip filtration is concentrated on the bottom of the drip filter cartridge 205 through the support plate 207, and the water after drip filtration is lifted through the water delivery hose 32 and returned to the stuffing drawer I by controlling the opening of the pump 31 in the water lifting unit 3. Circulation deepening process, the water delivery hose 32 is also connected to a return water hose 33 with a control valve 30, and by opening the control valve 30, the filtered water is synchronously lifted through the return water hose 33 and sent back to the dripping filter cartridge 205 for cyclic deepening deal with;

3) After advanced treatment, the water is put into the biological water tank through the drain valve for the organism to absorb the residue and test the water quality.

Specifically, when the stuffing tray I102 of the photocatalytic unit 1 is set to level 1 and the stuffing tray II202 of the microbial treatment unit 2 is also set to level 1, a method for treating sewage in combination with photocatalysis and microorganisms is provided, including the following steps:

1) The sewage enters the stuffing drawer I102 through the water inlet valve 13 and contacts with the photocatalytic material 11, and is degraded by a strong oxidation reaction under the excitation of the radiation from the light source 12 on the top of the quartz glass 105;

2) After the photocatalytic reaction, the water rises and overflows the material blocking overflow plate I103, and flows into the packing drawer II202 through the drainage hole I104. After being immersed in the granular biological filler 21 attached to the microbial nitrification and degradation, it overflows from the material blocking overflow plate II203 and enters the drainage cavity II; After the microbial nitrification and filtration, the water flows into the water distribution plate 206 through the drainage holes II 204 on the bottom plate of the packing drawer II 202, and evenly falls into the dripping filter cartridge 205 through the water passage holes 208, and continues to collide with the elastic fiber filler 22 and scatter, releasing carbon dioxide and dissolving. Oxygen is introduced, and at the same time, it is simultaneously nitrified and degraded by the microorganisms attached to the elastic fiber filler 22;

In addition, the water after drip filtration is concentrated on the bottom of the drip filter cartridge 205 through the support plate 207, and the opening of the pump 31 is controlled to make the water after drip filtration lifted through the water delivery hose 32 and sent back to the stuffing drawer I102 for circulation deepening treatment, and the water delivery is soft. The pipe 32 is also connected with a water return hose 33 with a control valve 30, and through the opening of the control valve 30, the water after trickling is lifted synchronously through the return hose 33 and sent back to the trickling filter cartridge 205 for cyclic deepening treatment;

3) After the advanced treatment, the water is put into the biological water tank 4 through the drain valve 212 for the organism to absorb the residue and check the water quality. Among them, the biological water tank 4 is divided into two parts by a partition, one part is placed with a hydroponics floating plate 40 for plants to absorb nutrient residues, and the other part supports fish, and the water quality is tested by the growth situation of plants and fish.

Of course, if the photocatalytic filtering structure 10 and the microbial filtering structure 20 are respectively set as multi-levels in the vertical direction, the steps of sewage treatment are as follows:

1) The sewage enters the first-stage stuffing drawer I102 through the water inlet valve 13 and contacts with the photocatalytic material 11, and is degraded by a strong oxidation reaction under the excitation of the radiation from the top light source 12 of the quartz glass 105; after the photocatalytic reaction, the water rises and overflows the first stage. The material blocking overflow plate I103 in the first-stage stuffing drawer I102, and then enters the next-stage stuffing drawer I through the staggered drainage holes I104 for photocatalytic treatment again;

2) After the treatment in this order, it flows into the first-stage stuffing bin II 202 of the microbial treatment unit through the drainage hole I of the last stage stuffing bin I, and after being nitrified and degraded by the microorganisms attached to the granular biological filler 21 immersed therein, it is then staggered. The drain hole II 204 of the next stage of the packing drawer II 202 flows into the next stage of the packing drawer II 202 for microbial catalytic treatment. After this sequence of treatment, the water after nitrification and filtration flows into the water distribution plate 206 through the drain hole II 204 of the last stage of the packing drawer II 202, and falls evenly through the water passage hole 208. into the trickling filter cartridge 205, continue to collide with the elastic fiber filler 22, scatter, release carbon dioxide and dissolved oxygen, and be simultaneously nitrified and degraded by the microorganisms attached to the elastic fiber filler 22;

In addition, the water after drip filtration is concentrated on the bottom of the drip filter cartridge 205 through the support plate 207, and the opening of the pump 31 is controlled to make the water after drip filtration lifted through the water delivery hose 32 and sent back to the stuffing drawer I102 for circulation deepening treatment, and the water delivery is soft. The pipe 32 is also connected with a water return hose 33 with a control valve 30, and through the opening of the control valve 30, the water after trickling is lifted synchronously through the return hose 33 and sent back to the trickling filter cartridge 205 for cyclic deepening treatment;

3) After the advanced treatment, the water is put into the biological water tank 4 through the drain valve 212 for the organism to absorb the residue and check the water quality. Among them, the biological water tank 4 is divided into two parts by a partition, one part is placed with a hydroponics floating plate 40 for plants to absorb nutrient residues, and the other part supports fish, and the water quality is tested by the growth situation of plants and fish.

It should be noted that the above embodiments can be freely combined as required. The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. These improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (10)

1. a device for photocatalysis and microorganism combined treatment of sewage, is characterized in that, comprises: a photocatalytic treatment unit, the photocatalytic treatment unit includes several stages of photocatalytic filtering structures connected in sequence, and any photocatalytic filtering structure at any stage has a built-in photocatalytic material for photocatalytic treatment of sewage; Microbial treatment unit, the microbial treatment unit includes several stages of microbial filtration structures connected in sequence, and any stage of microbial filtration structure has built-in biological fillers; the sewage water inlet of several stages of microbial filtration structures and the sewage outlet of several stages of photocatalytic filtration structures The water outlet is connected to carry out biodegradation treatment on the sewage after photocatalytic treatment; the sewage in the microbial treatment unit is circulated and sent to the photocatalytic treatment unit through the water extraction unit; The biological water tank is communicated with the several and the purified water outlet of the microbial filtering structure. 2. The device for treating sewage in combination with photocatalysis and microorganisms according to claim 1, characterized in that: The several-stage photocatalytic filtering structure includes a first shell, and several stages of support frames I arranged in the vertical direction in the first shell; any stage of the support frame I is correspondingly placed relative to the first shell and can be withdrawn. Pulled stuffing drawer I; The packing drawer I includes the bottom plate I and the surrounding side panels I; any level of the packing drawer I is provided with a material blocking and overflowing board I, and the material blocking and overflowing board I is respectively opposite to the two side panels of the packing drawer I along the pulling direction. I encloses a packing cavity I for built-in photocatalytic material and a drainage cavity I for draining sewage; the height of the material blocking overflow plate is lower than the side plate I of the stuffing drawer I, and corresponds to the bottom plate I of the drainage cavity. A drain hole I is provided. 3. The device for combined photocatalysis and microorganism treatment of sewage according to claim 2, characterized in that: The several-stage microbial filtering structure includes a second shell located on the lower side of the first shell, and several stages of support frames II arranged in the vertical direction in the second shell; any stage of the support frame II is correspondingly placed A stuffing drawer II that can be pulled out relative to the second shell; The stuffing drawer II includes the bottom plate II and the surrounding side plates II; any level of the stuffing drawer II is provided with a material blocking and overflowing board II, and the material blocking and overflowing board II is respectively opposite to the two side plates of the stuffing drawer II along the pulling direction. II encloses a packing cavity II for built-in biological fillers and a drainage cavity II for sewage drainage; the height of the material blocking and overflow plate II is lower than the side plate II of the stuffing drawer II, and corresponds to the bottom plate II of the drainage cavity II There is a drainage hole II on the top. 4. The device for combined photocatalysis and microorganism treatment of sewage according to claim 3, characterized in that: In the several-stage stuffing drawers I and several-stage stuffing drawers II, the drainage holes I and the drainage holes II located between the upper and lower layers are arranged in dislocation. 5. The device for treating sewage in combination with photocatalysis and microorganisms according to claim 3, characterized in that: The several-stage microbial filtration structure also includes a trickling filter cartridge arranged under the second shell, and a water distribution plate and a supporting plate are respectively placed in the dripping filter cartridge along the height direction. A filling cavity is formed between the water distribution plates and the support plate, and a plurality of water passage holes are arranged on both the water distribution plate and the support plate; The trickling filter cartridge is provided with a water storage cavity on the lower side of the support plate, and the sewage in the water storage cavity is circulated and sent to the photocatalytic treatment unit through the water extraction unit. 6. The device for treating sewage in combination with photocatalysis and microorganisms according to claim 5, characterized in that: The water lifting unit includes a pump arranged in the water storage cavity, the water distribution plate and the support plate are penetrated with a protective wire sleeve, and the upper side of the water distribution plate is connected to the adjacent filler drawer II. A water outlet cavity is formed between the bottom plates II; the pump passes through the grommet casing through a water delivery hose, and the water outlet cavity extends outward to the sewage water inlet of the stuffing drawer I. 7. The device for treating sewage in combination with photocatalysis and microorganisms according to claim 5, characterized in that: The first casing and the second casing are integrally arranged, and are fixedly connected with the trickling filter cartridge. 8. The device for treating sewage in combination with photocatalysis and microorganisms according to claim 6, characterized in that: The water delivery hose is also suspended above the water distribution plate through a water return hose with a control valve. 9. The device for treating sewage in combination with photocatalysis and microorganisms according to claim 5, characterized in that: A drain valve is also provided on the cylindrical side wall of the water storage cavity. 10. The device for treating sewage in combination with photocatalysis and microorganisms according to claim 5, characterized in that: The biological water tank is sleeved on the outer periphery of the bottom of the trickling filter cartridge, and a plurality of plant hydroponics floating plates are arranged in the cavity between the biological water tank and the trickling filter cartridge.

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