CN114956303A

CN114956303A - Device for treating high-concentration organic wastewater

Info

Publication number: CN114956303A
Application number: CN202210651452.0A
Authority: CN
Inventors: 郝懿行; 马建锋; 朱方
Original assignee: Changzhou University
Current assignee: Changzhou University
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-08-30

Abstract

The invention relates to the technical field of sewage treatment, in particular to a device for treating high-concentration organic wastewater, which comprises a barrel, wherein the barrel is divided into an atomization area and a condensation area, the bottom of the atomization area is provided with an ultrasonic atomization vibrator, a discharge electrode is arranged in the atomization area and comprises a cylindrical electrode plate and a metal wire positioned in the center of the electrode plate, a plurality of sieve pores are formed in the electrode plate, the sieve pores are as high as an exhaust fan, a filler monomer is arranged in the condensation area, and the filler monomer is made of carbon fiber loaded with an iron oxide catalyst; the ultrasonic atomization vibrator atomizes the sewage to form fog drops, the contact area of the sewage and the ozone is increased, the mass transfer efficiency and the utilization rate of the ozone are greatly improved, the degradation efficiency is improved, the discharge electrode is utilized to form free radicals, organic matters in the sewage are further degraded, then the fog drops enter a condensation area through the sieve pores on the electrode plate, and the filler monomer degrades pollutants more thoroughly.

Description

Device for treating high-concentration organic wastewater

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a device for treating high-concentration organic wastewater.

Background

The organic wastewater is mainly organic pollutants, contains organic substances such as carbohydrates, proteins, grease, lignin and the like, is easy to cause water eutrophication, has large harm, and has complex components, high chromaticity and peculiar smell.

Ozone has strong oxidizing property, is an oxidant stronger than oxygen, has high reaction speed, can perform oxidation reaction at a lower temperature, and simultaneously, a product obtained after the ozone reaction is oxygen, so the ozone is an efficient oxidant without secondary pollution.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the problem that ozone can escape from the water surface after ozone is directly introduced into sewage in the prior art, the ozone and the sewage cannot be in full contact, and the degradation efficiency is reduced, the device for treating the high-concentration organic wastewater is provided.

In order to solve the technical problems, the invention adopts the following technical scheme: a device for treating high-concentration organic wastewater comprises a barrel, wherein the cross section of the barrel is square or circular, a vertical partition plate is arranged in the barrel, the barrel is divided into an atomization area and a condensation area by the partition plate, a circulation hole is formed in the top of the partition plate to enable the atomization area and the condensation area to be communicated with each other, and an exhaust fan is arranged in the circulation hole;

the atomization zone is provided with a sewage inlet and an ozone inlet, sewage flows into the bottom of the cylinder from the sewage inlet, ozone enters the cylinder from the ozone inlet, the bottom of the atomization zone is provided with a plurality of ultrasonic atomization vibrators for atomizing the sewage to form fog drops, the fog drops and the ozone are contacted to generate oxidation, and the contact area of the fog drops and the ozone is increased, so that the fog drops and the ozone react more thoroughly; be equipped with discharge electrode in the atomizing district, discharge electrode includes cylindric electrode slice and is located the wire of electrode slice central part, the electrode slice is connected with the power positive pole, the wire is connected with the power negative pole, and the ozone entry is located the discharge electrode below, and in fog droplet and ozone got into discharge electrode, the fog droplet surface was taken to the burden electricity, makes its and ozone contact after, because ozone has strong oxidizing property, can "the strong" capture the electron on fog droplet surface, forms charged particle or more tends to form the free radical, and these free radicals react with the pollutant in the fog droplet more easily, degrade the organic matter, a plurality of sieve meshes have been seted up on the electrode slice, the sieve mesh is equal height with the exhaust fan, and fog droplet and ozone pass through exhaust fan entering condensation area.

The novel water-based fog drop device is characterized in that a plurality of filler monomers are hung in the dew condensation area, the filler monomers are carbon fibers loaded with iron oxide catalysts, the fog drops slide downwards after being changed into large water drops from small fog drops through the filler monomers, the catalysts and the carbon fibers catalyze ozone in the sliding process, the ozone is converted into free radicals to further degrade organic matters in the fog drops, and the fog drops slide to the bottom of the dew condensation area and then flow out from the water outlet in an overflowing manner.

Above-mentioned technical scheme comes to atomize sewage through ultrasonic atomization oscillator and forms the droplet, has increased the area of contact of sewage and ozone, has improved the mass transfer efficiency and the utilization ratio of ozone greatly, has improved degradation efficiency, and utilizes discharge electrode to form the free radical, further degrades the organic matter in the sewage, then droplet and ozone pass through the sieve mesh on the electrode slice and get into the dewfall district, and the filler monomer makes the pollutant degradation more thorough, the device simple structure, convenient operation.

Further, the preparation method of the filler monomer comprises the following steps: carbonizing the rope-hanging filler at 600-800 ℃ in an air-isolated manner, placing the rope-hanging filler in 10-20g/L ferric chloride solution, then dripping 0.1mol/L sodium hydroxide solution until the pH value is 9-11, standing for 10-20h, and then taking out the rope-hanging filler and placing the rope-hanging filler in a 300-500 ℃ muffle furnace in an air-isolated manner for calcining for 5-25 h.

Further, the inside floater level gauge that is equipped with of atomizing district, along with sewage flows into the barrel bottom from the sewage entry, the liquid level risees gradually, keeps the degree of depth that ultrasonic atomization oscillator is in liquid to be 15 ~ 40cm through the floater level gauge to guarantee ultrasonic atomization oscillator's normal work.

Furthermore, the metal wire is provided with a plurality of tip parts along the axial direction of the metal wire and used for point discharge.

Furthermore, the number of the discharge electrodes is multiple, and the discharge electrodes are arranged in parallel to charge more droplets.

Furthermore, the atomizing area is provided with a cleaning door, and substances which are not atomized in the atomizing area can be discharged from the cleaning door.

Furthermore, a hanging body is fixed at the bottom of the metal wire, and the metal wire is ensured not to shake randomly through the weight of the hanging body.

The invention has the beneficial effects that: the ultrasonic atomization vibrator atomizes the sewage to form fog drops, the contact area of the sewage and the ozone is increased, the mass transfer efficiency and the utilization rate of the ozone are greatly improved, the degradation efficiency is improved, the discharge electrode is utilized to form free radicals, the organic matters in the sewage are further degraded, then the fog drops and the ozone enter a condensation area through the sieve holes on the electrode plate, and the filler monomer degrades pollutants more thoroughly.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

in the figure:

1. a barrel; 101. an atomization zone; 1011. a sewage inlet; 1012. an ozone inlet; 102. a condensation area; 1021. a water outlet; 2. a partition plate; 201. a flow-through hole; 3. an exhaust fan; 4. an ultrasonic atomization vibrator; 5. a discharge electrode; 501. an electrode sheet; 5011. screening holes; 502. a metal wire; 5021. a tip portion; 503. a hanging body; 6. a filler monomer; 7. a floating ball liquid level meter; 8. and (6) cleaning the door.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention, and directions and references (e.g., upper, lower, left, right, etc.) may be used only to help the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

The first embodiment is as follows:

as shown in fig. 1, the invention is a device for treating high-concentration organic wastewater, comprising a cylinder 1, wherein the cross section of the cylinder 1 is square or round, a vertical partition plate 2 is arranged in the cylinder 1, the cylinder 1 is divided into an atomization zone 101 and a condensation zone 102 by the partition plate 2, a circulation hole 201 is formed in the top of the partition plate 2 to communicate the atomization zone 101 and the condensation zone 102, and an exhaust fan 3 is arranged in the circulation hole 201;

the atomization zone 101 is provided with a sewage inlet 1011 and an ozone inlet 1012, sewage flows into the bottom of the cylinder 1 from the sewage inlet 1011, ozone enters the cylinder 1 from the ozone inlet 1012, the bottom of the atomization zone 101 is provided with a plurality of ultrasonic atomization vibrators 4 for atomizing the sewage to form fog drops, the fog drops and the ozone are contacted to generate oxidation, and the contact area of the fog drops and the ozone is increased, so that the fog drops and the ozone are reacted more thoroughly, a plurality of discharge electrodes 5 are arranged in the atomization zone 101, each discharge electrode 5 comprises a cylindrical electrode plate 501 and a metal wire 502 positioned at the central part of the electrode plate 501, a hanging body 503 is fixed below the metal wire 502 to ensure that the metal wire 502 cannot shake randomly, the electrode plate 501 is connected with the positive pole of a power supply, the metal wire 502 is connected with the negative pole of the power supply, the metal wire 502 is provided with a plurality of tip portions 5021 along the axial direction thereof, and the ozone inlet 1012 is positioned below the discharge electrodes 5, when the fog drops and the ozone enter the discharge electrode 5, the surfaces of the fog drops are negatively charged, so that the fog drops and the ozone are contacted, because the ozone has strong oxidizing property, electrons on the surfaces of the fog drops can be captured by 'strong force', charged particles are formed or radicals tend to be formed, the radicals are easier to react with pollutants in the fog drops, organic matters are degraded, a plurality of sieve holes 5011 are formed in the electrode plate 501, the sieve holes 5011 are as high as the exhaust fan 3, and the fog drops and the ozone enter the condensation area 102 through the exhaust fan 3.

The atomizing area 101 is provided with a cleaning door 8, and non-atomized substances in the atomizing area 101 can be discharged from the cleaning door 8.

The floating ball liquid level meter 7 is arranged in the atomization zone 101, the liquid level gradually rises along with the sewage flowing into the bottom of the cylinder 1 from the sewage inlet 1011, and the depth of the ultrasonic atomization vibrator 4 in the liquid is kept to be 15-40cm through the floating ball liquid level meter 7, so that the normal work of the ultrasonic atomization vibrator 4 is ensured.

A plurality of filler monomers 6 are hung in the condensation area 102, the filler monomers 6 are made of carbon fibers loaded with iron oxide catalysts, the fog drops slide downwards after being changed from small fog drops to large water drops through the filler monomers 6, and the catalysts and the carbon fibers catalyze ozone in the sliding process, so that the ozone is converted into free radicals to further degrade organic matters in the fog drops, and the fog drops slide to the bottom of the condensation area 102 and then overflow from the water outlet 1021 to be discharged.

The preparation method of the filler monomer 6 comprises the following steps: carbonizing the rope-hanging filler at 600-800 ℃ in an air-isolated manner, placing the rope-hanging filler in 10-20g/L ferric chloride solution, then dripping 0.1mol/L sodium hydroxide solution until the pH value is 9-11, standing for 10-20h, and then taking out the rope-hanging filler and placing the rope-hanging filler in a 300-500 ℃ muffle furnace in an air-isolated manner for calcining for 5-25 h.

The working principle and the using process of the invention are as follows:

during operation, high-concentration organic wastewater to be treated is continuously injected into the atomization zone 101 through the sewage inlet 1011, the ultrasonic atomization vibrator 4, the exhaust fan 3 and the discharge electrode 5 are started, ozone is introduced from the ozone inlet 1012, the wastewater atomization and the ozone contact in the atomization zone 101 begin to generate oxidation, after atomization, the contact area of fog drops and ozone is greatly increased, and the defect of mass transfer is overcome. The free radicals react with pollutants in the fog drops more easily to degrade organic matters. After the collision in the atomization zone 101, the small fog drops are condensed into large water drops through the condensation on the surface of the activated carbon fibers after being blown into the condensation zone 102 under the action of the exhaust fan 3, and flow downwards along the activated carbon fibers, and in the flowing process, the catalytic action of surface iron and carbon on ozone is continuously degraded until the large water drops to the bottom of the condensation zone 102, and finally the large water drops overflow from the water outlet 1021 to be discharged, so that the degradation of organic matters is completed, and no matter capable of being atomized exists in the atomization zone 101 and can be discharged through the cleaning door 8.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An apparatus for treating high-concentration organic wastewater, characterized in that: the device comprises a barrel body (1), wherein a vertical partition plate (2) is arranged in the barrel body (1), the barrel body (1) is divided into an atomizing area (101) and a condensation area (102) by the partition plate (2), a circulation hole (201) is formed in the top of the partition plate (2), and an exhaust fan (3) is installed in the circulation hole (201);

the ultrasonic atomization device is characterized in that a sewage inlet (1011) and an ozone inlet (1012) are formed in the atomization region (101), a discharge electrode (5) is arranged inside the atomization region (101), a plurality of ultrasonic atomization vibrators (4) are arranged at the bottom of the atomization region (101), the discharge electrode (5) comprises a cylindrical electrode plate (501) and a metal wire (502) located at the center of the electrode plate (501), the electrode plate (501) is connected with the positive electrode of a power supply, the metal wire (502) is connected with the negative electrode of the power supply, a plurality of sieve holes (5011) are formed in the electrode plate (501) in the circumferential direction, and the sieve holes (5011) are as high as an exhaust fan (3);

a plurality of filler monomers (6) are hung in the condensation area (102), and the filler monomers (6) are made of carbon fibers loaded with iron oxide catalysts.

2. An apparatus for treating high-concentration organic wastewater according to claim 1, wherein: the preparation method of the filler monomer (6) comprises the following steps: carbonizing the rope-hanging filler at 600-800 ℃ in an air-isolated manner, placing the rope-hanging filler in 10-20g/L ferric chloride solution, then dripping 0.1mol/L sodium hydroxide solution until the pH value is 9-11, standing for 10-20h, and then taking out the rope-hanging filler and placing the rope-hanging filler in a 300-500 ℃ muffle furnace in an air-isolated manner for calcining for 5-25 h.

3. An apparatus for treating high-concentration organic wastewater according to claim 1, wherein: and a floating ball liquid level meter (7) is arranged in the atomization zone (101).

4. An apparatus for treating high-concentration organic wastewater according to claim 1, wherein: the metal wire (502) is provided with a plurality of sharp parts (5021) along the axial direction.

5. An apparatus for treating high-concentration organic wastewater according to claim 1, wherein: the number of the discharge electrodes (5) is multiple, and the discharge electrodes (5) are arranged in parallel.

6. An apparatus for treating high-concentration organic wastewater according to claim 1, wherein: the atomizing area (101) is provided with a cleaning door (8).

7. An apparatus for treating high-concentration organic wastewater according to claim 1, wherein: and a hanging body (503) is fixed at the bottom of the metal wire (502).