CN103253821A - Rotating disc type activated carbon bed and low-temperature plasma integrated waste water treatment facility - Google Patents

Abstract

The invention discloses a turntable-type activated carbon bed and low-temperature plasma integrated wastewater treatment device. The device includes a sewage pool, and a rotating shaft is mounted on the sewage pool. Frame, inner frame and plasma corona discharge electrodes. The device of the invention has the advantages of wide application range, high treatment efficiency, low equipment cost, low operating cost, clean and cheap, and stable operation, etc., solves the problem that part of the sewage is difficult to degrade in the current environment, and will become an important part of the sewage treatment technology in the future. It is an indispensable workhorse and can be widely used in various pollutant treatment fields.

Description

A waste water treatment device integrated with rotating disk activated carbon bed and low temperature plasma

technical field

The invention belongs to the field of sewage treatment and relates to a waste water treatment device integrated with a turntable activated carbon bed and low-temperature plasma.

Background technique

With the continuous development of the industrial economy, environmental problems have become increasingly prominent and have become the focus of people's increasing attention. The wastewater brought by industrial production has caused more and more serious environmental pollution. Although some industrial organic wastewater with simple components and easy degradation can pass through Traditional physical, chemical and biological combined processes can be effectively treated, but for now, for highly toxic and high-concentration organic wastewater that is difficult to be biodegraded, a reasonable and effective treatment has not been found due to insufficient technology and economy. method. At the same time, with the further highlight of the water resource crisis, the domestic environmental protection department has put forward higher and higher requirements for sewage discharge. However, the current status of sewage treatment is not optimistic, and it still faces problems such as difficult treatment and high operating costs. This is also a bottleneck in environmental governance, so any new technical measures that can improve the effect of sewage treatment, facilitate reuse of reclaimed water, and reduce treatment costs will play an important role in improving our water environment and contribute to the sustainable development of society. make a significant contribution.

Contents of the invention

The purpose of the present invention is to provide a turntable activated carbon bed and low-temperature plasma integrated wastewater treatment device.

The object of the present invention is achieved through the following technical solutions:

A turntable-type activated carbon bed and low-temperature plasma integrated wastewater treatment device, the device includes a sewage pool, a rotating shaft is mounted on the sewage pool, the rotating shaft is used to drive the turntable to rotate, and the turntable is partially submerged in the sewage pool Under the liquid surface, the turntable includes an outer frame, an inner frame and a plasma corona discharge electrode, the outer frame and the inner frame both have a mesh cylinder structure, and the inner frame is arranged in the outer frame , the rotating shaft passes through the inner frame, the plasma corona discharge electrode includes an inner electrode and an outer electrode, and the outer electrode is a ring-shaped metal electrode plate, which is arranged between the outer frame and the inner frame, so The internal electrode described above is at least one needle electrode, one end of the needle electrode corresponds to the inner side of the outer electrode with a certain distance, the other end is fixed on the rotating shaft, and the middle section of the needle electrode is equipped with a gas sensor , the inner frame, the outer electrode and the outer frame are fixed by a plurality of connecting rods uniformly arranged radially, the gap between the inner frame and the outer electrode is filled with activated carbon fiber filler, and the outer surface of the outer frame is evenly distributed There are a plurality of water-lifting plates, and the central axes of the outer frame, the outer electrodes, the inner frame and the rotating shaft are coincident.

One end of the needle electrode corresponding to the inner side of the outer electrode is provided with a plurality of emitting thorns. Setting the emission thorns can increase the discharge capacity and reduce the electrode voltage during operation.

There are multiple needle electrodes, and two adjacent needle electrodes are fixed on the rotating shaft at an angle of 45°. Each needle electrode is connected in parallel with one end of the high voltage electrode of the high voltage and high frequency power supply.

40%-50% of the area of the turntable is submerged under the liquid level of the sewage pool.

The activated carbon fiber filler is an amorphous carbon fiber material. Its shape is carbon fiber weave for easy filling of voids.

The rotating shaft drives the turntable to rotate through the cooperation of the shaft sleeve and the inner frame.

The inner wall of the sewage pool is a semicircular arc body, and the two sides of the sewage pool are respectively provided with a water inlet and a water outlet.

Plasma technology for wastewater treatment is a new wastewater treatment technology that combines high-energy electron radiation, ozone oxidation and ultraviolet light into one. Its principle is to use high-voltage pulse discharge to form low-temperature non-equilibrium plasma, generate a large number of high-energy electrons, and produce multiple physical and chemical effects when it comes into contact with pollutants. In the water body, local high temperature, hydroelectric cavitation, strong shock wave, and strong ultraviolet light can be generated, and at the same time, a large number of free radicals such as OH, e _eq ^- , O, HO ₂ , and highly oxidizing O ₃ can be produced , because these substances with strong oxidizing properties can replace the chemical agents in the prior art, and organic matter in wastewater can be effectively removed through their strong oxidizing properties. At the same time, the activated carbon fiber attached to the surface can efficiently adsorb macromolecular substances and play a good role in adsorption and filtration. At the same time, the activated carbon fiber can be modified under the action of these strong oxidizing substances, and has both The role of the catalyst, so that the sewage has been further and effectively treated. The turntable structure adopted eliminates the artificial ventilation device of traditional plasma technology, which not only facilitates the operation, but also saves cost investment. At the same time, the sewage will be turbulent under the circulation of the turntable, so that the sewage can be fully mixed and reacted. It can be seen that only electric energy is consumed in the whole treatment process, and it is a high-efficiency sewage treatment device with high treatment efficiency, low equipment cost, low operating cost, clean and cheap, environmentally friendly and stable operation.

The turntable activated carbon bed and low-temperature plasma integrated wastewater treatment device has the advantages of simple structure, safe operation, low power consumption, strong impact load resistance, and strong operability, so it can be widely used in the treatment of small and medium-sized sewage.

Beneficial effects of the present invention:

In summary, the device of the present invention has the advantages of wide application range, high treatment efficiency, low equipment cost, low operating cost, clean and cheap, environmental protection and stable operation, etc., and solves the problem that some sewage is difficult to degrade in the current environment. It will become an indispensable main force in the future sewage treatment technology. It can be widely used in various pollutant treatment fields.

Description of drawings

Figure 1 is a front view of the device of the present invention.

Figure 2 is a top view of the device of the present invention.

Among them, 1—sewage pool, 2—water inlet, 3—water outlet, 4—lifting plate, 5—connecting rod, 6—outer frame, 7—activated carbon fiber filler, 8—rotating shaft, 9—inner electrode, 10—outer Electrode, 11—turntable, 12—inner frame, 13—emission thorn, 14—gas sensor.

Detailed ways

As shown in Fig. 1 and Fig. 2, a turntable activated carbon bed and low-temperature plasma integrated wastewater treatment device includes a sewage pool 1, and a rotating shaft 8 is mounted on the sewage pool 1, and the rotating shaft 8 is used for Drive the turntable 11 to rotate, the turntable 11 is partly submerged under the liquid level of the sewage pool 1, the turntable 11 includes the outer frame 6, the inner frame 12 and the plasma corona discharge electrode, the outer frame 6 and the inner Frames 12 are reticular cylindrical structures, the inner frame 12 is set in the outer frame 6, the rotating shaft 8 passes through the inner frame 12, and the plasma corona discharge electrode includes an inner electrode 9 and The outer electrode 10, the outer electrode 10 is a ring-shaped metal electrode plate, arranged between the outer frame 6 and the inner frame 12, the inner electrode 9 is at least one needle electrode, and the needle electrode One end of one end corresponds to the inner side of the outer electrode 10 and has a certain interval, the other end is fixed on the rotating shaft 8, the middle section of the needle electrode is equipped with a gas sensor 14, the inner frame 12, the outer electrode 10 and the outer frame 6 Fixed by a plurality of connecting rods 5 evenly arranged radially, the gap between the inner frame 12 and the outer electrode 10 is filled with activated carbon fiber filler 7, and the outer surface of the outer frame 6 is evenly distributed with a plurality of water-lifting plates 4 , the central axes of the outer frame 6, the outer electrode 10, the inner frame 12 and the rotating shaft 8 coincide.

One end of the needle electrode corresponding to the inner side of the outer electrode 10 is provided with a plurality of emitting spines 13 .

The number of electrodes of the needle electrodes can be set according to the treatment object and the discharge effect, and each needle electrode is connected in parallel with the high-voltage electrodes of the high-voltage and high-frequency power supply. The inner electrode 9 and the outer electrode 10 are respectively connected with the high-voltage electrode (positive pole) and the low-voltage electrode (negative pole) of the high-frequency high-voltage power supply. There are three needle electrodes in this example, and two adjacent needle electrodes are fixed on the rotating shaft 8 at an angle of 45°.

40%-50% of the area of the turntable 11 is submerged under the liquid level of the sewage tank 1. The inner wall of the sewage pool 1 is a semicircular arc, and the water inlet 2 and the water outlet 3 are respectively provided on both sides of the sewage pool 1 . The rotating shaft 8 is 10-25cm higher than the sewage water surface. During operation, the rotating disk 11 drives the rotating shaft 8 to rotate continuously at 0.3-3r/min through the transmission mechanism, and alternately contacts with air and sewage. The rotating shaft 8 drives the turntable 11 to rotate through the cooperation of the shaft sleeve and the inner frame 12 .

The activated carbon fiber filler 7 is an amorphous carbon fiber material.

The embodiment of the turntable activated carbon bed and low temperature plasma integrated wastewater treatment device of the present invention is as follows:

The sewage first enters the sewage tank 1 through the water inlet 2, and the turntable 11 rotates clockwise under the action of the transmission mechanism and the rotating shaft 8. During the rotation, the sewage will be immersed in the turntable 11. When the sewage is brought out of the water surface, when the inner electrode 9 is placed When above the water surface, the gas sensor 14 (German solidsense, model: 4SPEO2) reduces the resistance between the inner electrode 9 and the outer electrode 10, and forms a low-temperature non-equilibrium plasma under the condition of high-voltage pulse discharge, giving a reaction A certain amount of energy is injected into the device to generate a large number of high-energy electrons to bombard pollutants, resulting in multiple physical and chemical effects. Produce local high temperature, electro-hydraulic cavitation, strong shock wave, strong ultraviolet light in the water body, and at the same time produce a large number of free radicals such as OH, e _eq ^- , O, HO ₂ , and highly oxidizing O ₃ , because these substances have strong oxidizing properties, so as to remove the organic content in the waste water. When the inner electrode 9 is placed under the water surface, the gas sensor 14 will reduce the voltage between the two electrodes and stop the discharge, thereby ensuring that the electrode is only in the water. The discharge will only occur when it is in full contact with the air, which improves the reaction effect and saves energy consumption. At the same time, activated carbon fibers can adsorb various pollutants in sewage. At the same time, activated carbon fibers can be modified in these strong oxidizing substances, and act as catalysts, so as to further effectively treat sewage. The turntable structure adopted omits the artificial introduction of air in the traditional plasma technology, which not only facilitates the operation, but also saves cost investment. At the same time, the sewage will be turbulent under the action of the turntable, so that the sewage can be fully mixed and reacted. Finally, the pollutants in the sewage are effectively removed. The device can also be used in multiple fields, and the effect is also very remarkable.

Therefore, the turntable activated carbon bed and low-temperature plasma integrated wastewater treatment device of the present invention has a wide range of treatment of organic matter, high speed, high efficiency, and no secondary pollution, especially for toxic and harmful organic pollutants that are difficult to degrade and have special treatment requirements. The chemical effect is more significant and has a wide application prospect, and it is expected to be well promoted and used in the future sewage treatment process.

Claims (7)

1. A rotating disc type active-carbon bed with the low-temperature plasma integrated waste-water treater, it is characterized in that this device comprises sewage lagoon (1), described sewage lagoon (1) is put on the shelf and is provided with rotating shaft (8), described rotating shaft (8) is used for driving rotating disk (11) and rotates, described rotating disk (11) is partially immersed under the liquid level of sewage lagoon (1), described rotating disk (11) comprises outside framework (6), inner frame (12) and plasma body corona discharge electrode, described outside framework (6) and inner frame (12) are netted cylindrical structure, described inner frame (12) is located in the described outside framework (6), inner frame (12) is passed in described rotating shaft (8), described plasma body corona discharge electrode package is drawn together interior electrode (9) and outer electrode (10), described outer electrode (10) is the annular metal battery lead plate, be located between described outside framework (6) and the inner frame (12), electrode (9) is at least one needle electrode in described, one end of described needle electrode is inboard corresponding and at regular intervals at interval with outer electrode (10), the other end is installed in the rotating shaft (8), the stage casing of needle electrode is equipped with air-sensitive inductor block (14), described inner frame (12), outer electrode (10) and outside framework (6) are fixed by a plurality of union levers (5) that are radial even setting, fill activated carbon fiber filler (7) in the space between described inner frame (12) and the outer electrode (10), the outside surface of described outside framework (6) is evenly distributed with a plurality of plates that pump up water (4), described outside framework (6), outer electrode (10), the central shaft of inner frame (12) and rotating shaft (8) overlaps.
2. 2. the active-carbon bed and low-temperature plasma integrated waste-water treater of rotating disc type according to claim 1 is characterized in that the inboard corresponding end of described needle electrode and outer electrode (10) is provided with many emission thorns (13).
3. 3. the active-carbon bed and low-temperature plasma integrated waste-water treater of rotating disc type according to claim 2 is characterized in that described needle electrode is many, is 45 between two adjacent needle electrodes and is fixed in the rotating shaft (8).
4. 4. the active-carbon bed and low-temperature plasma integrated waste-water treater of rotating disc type according to claim 1 is characterized in that 40% ~ 50% of described rotating disk (11) area is immersed under the liquid level of sewage lagoon (1).
5. 5. the active-carbon bed and low-temperature plasma integrated waste-water treater of rotating disc type according to claim 1 is characterized in that described activated carbon fiber filler (7) is the amorphous carbon fiber material.
6. Rotating disc type according to claim 1 active-carbon bed with the low-temperature plasma integrated waste-water treater, it is characterized in that described rotating shaft (8) matches with inner frame (12) by axle sleeve to drive rotating disk (11) rotation.
7. Rotating disc type according to claim 1 active-carbon bed with the low-temperature plasma integrated waste-water treater, the inwall that it is characterized in that described sewage lagoon (1) is the semi-circular arc body, and described sewage lagoon (1) both sides are respectively equipped with water-in (2) and water outlet (3).

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