CN215250165U

CN215250165U - High-voltage pulse plasma sewage treatment equipment

Info

Publication number: CN215250165U
Application number: CN202121360751.6U
Authority: CN
Inventors: 李松楼; 田甜; 董前旺; 魏元旺
Original assignee: Cangzhou Anwote Science And Technology Co ltd
Current assignee: Cangzhou Anwote Science And Technology Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-12-21
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses high-voltage pulse plasma sewage treatment equipment, which comprises a circulating water tank (1), an electrolytic bath (3), a plasma reactor (5) and an ozone mixing reactor (12), wherein the circulating water tank (1) is connected with the electrolytic bath (3) through a water inlet pump (2); the electrolytic cell (3) is connected with the plasma reactor (5); the plasma reactor (5) is connected with the ozone mixing reactor (12); the plasma reactor (5) is internally provided with a pair of high-voltage electrodes (8) which are connected with a high-voltage power supply and can carry out high-voltage pulse discharge. The device can be used for treating biochemical wastewater, does not add any chemical agent, does not produce sludge, has short process flow, quick reaction time and no secondary pollution, and greatly improves the biodegradability of the wastewater.

Description

High-voltage pulse plasma sewage treatment equipment

Technical Field

The utility model relates to a sewage treatment field, concretely relates to high-voltage pulse plasma sewage treatment device.

Background

At present, there are various treatment methods for domestic chemical wastewater, including chemical precipitation, chemical flocculation, flotation, electrolysis, ion exchange and membrane filtration, which have their disadvantages, so that their application is limited, for example, the chemical method has high requirement for automation degree, the process flow is complicated, and the chemical method must be added with chemicals, resulting in large amount of waste residues; the cost of the electrolysis method is high, etc. The high-voltage pulse plasma method is developed in recent years and is used for treating chemical wastewater, and the technology generates electrochemical reaction under the action of external high voltage, converts electric energy into chemical energy, can realize redox reaction on organic or inorganic matters in the wastewater, and further can perform coagulation and floatation removal to separate pollutants from a water body. The method has the advantages of simple operation, high treatment efficiency, electric energy saving and good popularization and application values.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high-pressure pulse plasma sewage treatment system for high-efficient processing chemical industry waste water.

The high-voltage pulse plasma sewage treatment equipment comprises a circulating water tank, an electrolytic bath, a plasma reactor and an ozone mixing reactor, wherein the circulating water tank is connected with the electrolytic bath through a water inlet pump; the electrolytic bath is connected with the plasma reactor; the plasma reactor is connected with the ozone mixing reactor; the plasma reactor is internally provided with a pair of high-voltage electrodes which are connected with a high-voltage power supply and can carry out high-voltage pulse discharge.

The extremely strong current generated by the high voltage pulse power supply is input to the discharge channel in water for an extremely short time (nanosecond level) to form an electron avalanche, and the huge pulse current forms high energy density in the channel, thereby causing local high temperature. During discharge, electrons inelastically collide with neutral gas molecules and atomsThe neutral molecules are excited, decomposed and ionized more strongly to generate high-oxidation active substances (OH, H)₂O₂Active particles, etc.), ultraviolet radiation, high-energy electron bombardment, etc., to achieve the purpose of removing organic matters.

In the specific case, the plasma reactor is formed by an outer cylinder and an inner cylinder, and the bottoms of the two cylinders are communicated; one side of the upper part of the outer cylinder is provided with a water inlet, the other opposite side is provided with an overflow port, and the overflow port is connected with the circulating water tank; the lower part of the outer cylinder is provided with a water outlet which is connected with the ozone mixing reactor.

Preferably, the distance between the electrode tips of the pair of high-voltage electrodes is 1-2 cm.

Preferably, the upper part of the plasma reactor is provided with a vent pipe for introducing ozone.

Preferably, the inside of the ozone mixing reactor is a U-shaped pipe.

Preferably, the outlet water of the ozone mixing reactor is connected with a circulating water tank.

Under the specific condition, the high-voltage pulse plasma sewage treatment equipment of the utility model can also comprise an ozone generating device, and the ozone generating device is respectively connected with the electrolytic bath, the plasma reactor and the ozone mixing reactor. In the electrolytic cell, ozone can directly oxidize certain organic matters; in the plasma reactor, ozone can be decomposed to generate OH free radicals, and the OH free radicals can oxidize and decompose pollutants in water, and finally, the degradation products are carbon dioxide and water. And (3) discharging the sewage into the ozone mixing reactor, wherein the ozone and the unoxidized part of the sewage are subjected to full oxidation reaction.

The utility model discloses a high-voltage pulse plasma sewage treatment device need not add chemical reagent when carrying out sewage treatment, and the processing procedure is simple, and no waste and secondary pollution when improving water treatment efficiency, greatly reduced the energy consumption.

Drawings

FIG. 1 is the overall structure of the high-voltage pulse plasma sewage treatment equipment of the present invention.

Wherein each reference numeral in the drawings represents respectively: 1-a circulating water tank, 2-a water inlet pump, 3-an electrolytic tank, 4-a low-voltage electrode, 5-a plasma reactor, 6-an outer cylinder, 7-an inner cylinder, 8-a high-voltage electrode, 9-an air pipe, 10-a water inlet, 11-an overflow port and 12-an ozone mixing reactor.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Referring to fig. 1, the high voltage pulse plasma sewage treatment apparatus according to the present invention mainly includes a circulation water tank 1, an electrolytic bath 3, a plasma reactor 5, and an ozone mixing reactor 12.

The circulating water tank 1 is connected with the electrolytic bath 3 through a water inlet pump 2, and the water inlet pump 2 is used for pumping and conveying wastewater. A pair of low-voltage electrodes 4 is arranged in the electrolytic cell 3, and a direct current power supply 24V is connected, and the current is 5A, so that the pretreatment of the wastewater is realized.

The plasma reactor 5 is formed by an outer cylinder 6 and an inner cylinder 7, and the bottoms of the two layers of cylinders are communicated; one side of the upper part of the outer cylinder 6 is provided with a water inlet 10, the other opposite side is provided with an overflow port 11, and the overflow port 11 is connected with the circulating water tank 1; the structure makes the wastewater flow in a roundabout way up and down in the plasma reactor 5, so that the wastewater can be fully reacted. The lower part of the outer cylinder 6 is provided with a water outlet which is connected with the ozone mixing reactor 12. The lower part of the inner cylinder 7 is provided with a pair of high-voltage electrodes 8 which are connected with a high-voltage power supply to perform high-voltage pulse discharge, the distance between the electrode tips is about 1-2 cm, the voltage between the two electrodes is 20KV, the frequency is 170Hz, the discharge time of the two electrodes does not exceed 10min, the two electrodes are generally discharged for 5min, and the two electrodes are closed and cooled for 5min, and are alternately performed to protect the electrodes.

The upper part of the inner cylinder 7 is provided with a vent pipe 9 for introducing ozone. Wastewater and O₃The mixture enters a plasma reactor 5, is divided into two streams of water after glow discharge, one stream overflows into a circulating water tank 1, and the other stream enters the ozone mixing reactor 12 through a lower valve of the reactor.

The ozone mixing reactor 12 is internally provided with a U-shaped pipe, and the outlet water is connected with the circulating water tank 1. The ozone mixing reactor 12 is used for sufficiently oxidizing the electrolyzed water.

The true bookWith neotype high-voltage pulse plasma sewage treatment device can also include ozone generating device (not shown in the figure), ozone generating device includes air compressor machine and ozone generator, wherein the air compressor machine absorbs the air, provides compressed air for ozone generator after the compression. The ozone generator makes oxygen in the compressed air into O₃. The ozone generating device is respectively connected with the electrolytic bath 3, the plasma reactor 5 and the ozone mixing reactor 12.

Wastewater treatment process: the waste water of the circulating water tank is mixed with O at the inlet of the electrolytic bath after passing through a pump and a valve₃Enters the electrolytic bath and enters the plasma reactor from an outlet at the top of the electrolytic bath. The overflow water at the upper part of the plasma reactor enters a water tank, and the overflow water at the lower part of the plasma reactor enters an ozone mixing reactor through a valve and then enters the water tank for circulation.

It should be noted that the above-described embodiments may enable those skilled in the art to more fully understand the present invention, but do not limit the present invention in any way. It will be apparent to those skilled in the art that modifications and improvements can be made to the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The high-voltage pulse plasma sewage treatment equipment is characterized by comprising a circulating water tank (1), an electrolytic bath (3), a plasma reactor (5) and an ozone mixing reactor (12), wherein the circulating water tank (1) is connected with the electrolytic bath (3) through a water inlet pump (2); the electrolytic cell (3) is connected with the plasma reactor (5); the plasma reactor (5) is connected with the ozone mixing reactor (12); the plasma reactor (5) is internally provided with a pair of high-voltage electrodes (8) which are connected with a high-voltage power supply and can carry out high-voltage pulse discharge.

2. The high-pressure pulse plasma sewage treatment apparatus according to claim 1, wherein the plasma reactor (5) is formed by an outer cylinder (6) and an inner cylinder (7), the bottoms of the two cylinders being communicated; one side of the upper part of the outer cylinder (6) is provided with a water inlet (10), the other opposite side is provided with an overflow port (11), and the overflow port (11) is connected with the circulating water tank (1); the lower part of the outer cylinder (6) is provided with a water outlet which is connected with the ozone mixing reactor (12).

3. The high-voltage pulse plasma sewage treatment apparatus according to claim 1, wherein the distance between the electrode tips of the pair of high-voltage electrodes (8) is 1 to 2 cm.

4. The high pressure pulse plasma sewage treatment apparatus according to claim 1, wherein the upper part of the plasma reactor (5) is provided with a vent pipe (9) for introducing ozone.

5. The high pressure pulse plasma sewage treatment apparatus according to claim 1, wherein the inside of the ozone mixing reactor (12) is a U-shaped pipe.

6. The high pressure pulse plasma sewage treatment apparatus according to claim 1, wherein the outlet water of the ozone mixing reactor (12) is connected to the circulation tank (1).

7. The high-voltage pulse plasma sewage treatment apparatus according to claim 1, further comprising an ozone generating device connected to the electrolytic bath (3), the plasma reactor (5) and the ozone mixing reactor (12), respectively.