CN215365064U

CN215365064U - Reactor for wet catalytic oxidation treatment of high-concentration organic wastewater

Info

Publication number: CN215365064U
Application number: CN202120031759.1U
Authority: CN
Inventors: 陈广鹏; 柳陈军
Original assignee: Quanzhou Zhongtian Petrochemical Machinery Manufacturing Co ltd
Current assignee: Quanzhou Zhongtian Petrochemical Machinery Manufacturing Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-12-31
Anticipated expiration: 2031-01-07

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a reactor for wet catalytic oxidation treatment of high-concentration organic wastewater, which comprises a reaction tank, wherein an ultraviolet lamp is arranged on the side wall of the reaction tank, a water inlet pipe is arranged at the top of the reaction tank, an aeration pipe and a water drain pipe are arranged at the bottom of the reaction tank, a stirring device is arranged in the inner cavity of the reaction tank, the stirring device comprises two stirring shafts, the stirring shafts are rotatably connected with the reaction tank, each stirring shaft is provided with a stirring blade, the lower end of each stirring shaft penetrating through the bottom wall of the reaction tank is connected with a gear, the gears are meshed and connected, and one stirring shaft is connected with a driving device for driving the stirring shafts to rotate. Ozone gas moves from the bottom of the reaction tank to the top of the reaction tank, wastewater flows from top to bottom, the wastewater is mixed with the ozone gas through convection of the wastewater and the ozone gas, and the wastewater is disturbed through a stirring device, so that the wastewater and the ozone gas can be uniformly mixed.

Description

Reactor for wet catalytic oxidation treatment of high-concentration organic wastewater

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a reactor for wet catalytic oxidation treatment of high-concentration organic wastewater.

Background

The treatment of high-concentration organic wastewater is a recognized problem in the sewage treatment world at home and abroad at present. The high concentration refers to that the organic matter concentration (calculated by COD) of the wastewater is higher, generally more than 2000mg/L, and some is even as high as tens of thousands to hundreds of thousands of milligrams per liter; by refractory, it is meant that such waste water is poorly biodegradable (BOD5/COD values are generally below 0.3 or even lower). Therefore, organic wastewater with COD concentration of more than 2000mg/L, BOD5/COD value of less than 0.3 is commonly called high-concentration refractory organic wastewater in the industry. Due to the generation of high-concentration refractory organic wastewater and the characteristic attributes of the high-concentration refractory organic wastewater, the following main hazards exist:

firstly, the oxygen hazard: due to biodegradation, high-concentration organic wastewater can cause oxygen deficiency and even anaerobic reaction of a receiving water body, most aquatic organisms die, so that stink is generated, and water quality and environment are deteriorated; secondly, sensory pollution: the high-concentration organic wastewater not only causes the water body to lose use value, but also seriously affects the normal life of people nearby the water body; thirdly, toxic hazard: the organic wastewater with ultrahigh concentration contains a large amount of toxic organic matters, which can be continuously accumulated and stored in natural environments such as water, soil and the like, and finally enter human bodies to harm human health. The high concentration organic wastewater treatment technology can be divided into three categories: physical and chemical treatment technology, chemical treatment technology and biological treatment technology. The chemical treatment technology is a method for converting pollutant components in the wastewater into harmless substances by applying a chemical principle and a chemical action so as to purify the wastewater. The chemical oxidation method is divided into two main categories, one is that organic matters in the wastewater are oxidized into carbon dioxide and water by using strong oxidants (such as hydrogen peroxide, potassium permanganate, hypochlorite, ozone and the like) at normal temperature and normal pressure; the other is to decompose organic matters in the wastewater at high temperature and high pressure, including supercritical water oxidation and wet air oxidation processes, wherein the used oxidant is usually oxygen or hydrogen peroxide, and a catalyst is generally adopted to reduce the reaction conditions and accelerate the reaction rate. The chemical oxidation method has the advantages of high reaction speed, simple control, high cost, difficulty in oxidizing organic matters which are difficult to degrade into inorganic matters in one step, and less research on the control of intermediate products at present. This technique is also often used as a pretreatment method for biochemical treatment. The main methods include incineration, ozone oxidation, electrochemical oxidation, and the like.

For example, Chinese patent application No. CN201711439820.0 discloses an oxidation reactor for treating organic wastewater, which comprises a reactor, wherein a liquid oxidation reaction zone, an ultraviolet lamp oxidation reaction zone and a solid oxidation reaction zone are sequentially arranged in the reactor from top to bottom, the device comprises an electrooxidation reaction zone, an ozonation reaction zone and a water outlet zone, wherein a wastewater inlet pipe is arranged on one side of the liquid oxidation reaction zone, a liquid catalyst inlet pipe is arranged at the top end of the liquid oxidation reaction zone, a plurality of ultraviolet lamps are arranged on the inner wall of the ultraviolet lamp oxidation reaction zone, a filter screen is arranged in the solid oxidation reaction zone, a solid catalyst is arranged in the filter screen, an anode plate is arranged on one side of the inner wall of the electrooxidation reaction zone, a cathode plate is arranged on the other side of the inner wall of the electrooxidation reaction zone, a gas distributor is arranged inside the ozonation reaction zone and connected with an ozone inlet pipe, a water distributor is arranged inside the water outlet zone and connected with a water outlet pipe.

However, the above patent still has problems, for example, the mixing of the wastewater and the ozone gas is not uniform, the reaction speed of the mixture is slow, and the work efficiency is low.

Based on the technical scheme, the utility model designs the reactor for the wet catalytic oxidation treatment of the high-concentration organic wastewater so as to solve the technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a reactor for wet catalytic oxidation treatment of high-concentration organic wastewater, which is used for solving the technical problem.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high concentration organic waste water wet-type catalytic oxidation is reactor for processing, includes the retort, the retort lateral wall is provided with the ultraviolet lamp, the retort top is provided with the inlet tube, the retort bottom is provided with aeration pipe and drain pipe, the retort inner chamber is provided with agitating unit, agitating unit is including two (mixing) shafts, the (mixing) shaft rotates with the retort and is connected, each the (mixing) shaft all is provided with stirring vane, each the (mixing) shaft lower extreme runs through the retort diapire and all is connected with the gear, gear engagement connects, one of them agitator shaft connection has drive (mixing) shaft pivoted drive arrangement.

Preferably, the water inlet pipe is connected with a spraying device, the spraying device comprises a spraying block, the spraying block is communicated with the water inlet pipe, and the spraying block is connected with a plurality of nozzles.

Preferably, the driving device comprises a motor, the motor is fixed on the side wall of the reaction tank, the output end of the motor is connected with a first belt wheel, one of the first belt wheel and the second belt wheel is arranged on the stirring shaft, and the first belt wheel and the second belt wheel are connected through a synchronous belt.

Preferably, the outer wall of the reaction tank is provided with a preheating coil.

Preferably, the outer wall of the reaction tank is provided with a heat-insulating layer.

Compared with the prior art, the utility model has the beneficial effects that:

1. ozone gas moves from the bottom of the reaction tank to the top of the reaction tank, wastewater flows from top to bottom, the wastewater is mixed with the ozone gas through convection of the wastewater and the ozone gas, and the wastewater is disturbed through a stirring device, so that the wastewater and the ozone gas can be uniformly mixed.

2. Through two opposite stirring shafts, the disturbance of a stirring device to water is increased, and the mixing of the wastewater and the ozone gas is facilitated.

3. In the wastewater treatment process, the preheating coil heats the inner cavity of the reaction tank, so that the temperature of the inner cavity of the reaction tank is increased, and the reaction rate is increased.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a reaction tank; 2. an ultraviolet lamp; 3. a water inlet pipe; 4. an aeration pipe; 5. a drain pipe; 6. a stirring device; 7. a stirring shaft; 8. a stirring blade; 9. a gear; 10. a drive device; 11. a spraying device; 12. Spraying blocks; 13. a nozzle; 14. a motor; 15. a first pulley; 16. a second pulley; 17. a synchronous belt; 18. preheating a coil pipe; 19. and (7) an insulating layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1, the present invention provides a technical solution: the utility model provides a high concentration organic waste water wet-type catalytic oxidation is reactor for processing, including retort 1, 1 lateral wall of retort is provided with ultraviolet lamp 2, 1 top of retort is provided with inlet tube 3, 1 bottom of retort is provided with aeration pipe 4 and drain pipe 5, 1 inner chamber of retort is provided with agitating unit 6, agitating unit 6 is including two (mixing) shafts 7, (mixing) shaft 7 rotates with retort 1 to be connected, each (mixing) shaft all is provided with stirring vane 8, each (mixing) shaft 7 lower extreme runs through 1 diapire of retort and all is connected with gear 9, gear 9 meshes the connection, one of them (mixing) shaft 7 is connected with drive (mixing) shaft 7 pivoted drive arrangement 10.

Specifically, the water inlet pipe 3 is connected with a spraying device 11, the spraying device 11 comprises a spraying block 12, the spraying block 12 is communicated with the water inlet pipe 3, and the spraying block 12 is connected with a plurality of nozzles 13. The wastewater is uniformly dispersed in the inner cavity of the reaction tank 1 through the spraying block 12 and the nozzle 13, so that the ozone gas moving from bottom to top is uniformly mixed with the wastewater.

Specifically, drive arrangement 10 is including motor 14, and motor 14 is fixed at retort 1 lateral wall, and motor 14 output is connected with first band pulley 15, and one of them (mixing) shaft 7 is provided with second band pulley 16, and first band pulley 15 and second band pulley 16 pass through hold-in range 17 and connect. The motor 14 rotates to drive the first belt pulley 15 to rotate and pass through

Specifically, the outer wall of the reaction tank 1 is provided with a preheating coil 18. The preheating coil 18 is arranged to heat the inner cavity of the reaction tank 1 so as to improve the reaction rate.

Specifically, the outer wall of the reaction tank 1 is provided with a heat-insulating layer 19. The heat dissipation is prevented by providing the insulation layer 19.

One specific application of this embodiment is: the wastewater flows in from a water inlet pipe 3 at the top of the reaction tank 1, and is dispersed into a plurality of small water flows through a spraying block 12 and a nozzle 13, so that the wastewater is dispersed in the inner cavity of the reaction tank 1, ozone gas enters the inner cavity of the reaction tank 1 from the bottom of the reaction tank 1 through an aeration pipe 4, the ozone gas moves from the bottom of the reaction tank 1 to the top of the reaction tank 1, the wastewater flows from top to bottom, the wastewater is mixed with the ozone gas through convection of the wastewater and the ozone gas, and the wastewater is disturbed through a stirring device 6, so that the wastewater and the ozone gas can be uniformly mixed.

When the stirring device 6 works, the motor 14 is started, the output end of the motor 14 rotates to drive the first belt wheel 15 to rotate, the synchronous belt 17 is used for driving the second belt wheel 16 to rotate, the stirring shaft 7 connected with the second belt wheel 16 rotates, the gear 9 drives the other stirring shaft 7 to rotate, and the rotation directions of the two stirring shafts 7 are opposite. The disturbance of the stirring device 6 to water is increased through the two opposite stirring shafts 7, and the mixing of the wastewater and the ozone gas is more facilitated.

In the wastewater treatment process, the preheating coil 18 heats the inner cavity of the reaction tank 1, so that the temperature of the inner cavity of the reaction tank 1 is increased, and the reaction rate is increased.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a reactor is used in high concentration organic waste water wet-type catalytic oxidation, includes retort (1), retort (1) lateral wall is provided with ultraviolet lamp (2), its characterized in that: the reaction tank is characterized in that a water inlet pipe (3) is arranged at the top of the reaction tank (1), an aeration pipe (4) and a water discharge pipe (5) are arranged at the bottom of the reaction tank (1), a stirring device (6) is arranged in an inner cavity of the reaction tank (1), the stirring device (6) comprises two stirring shafts (7), the stirring shafts (7) are rotatably connected with the reaction tank (1), each stirring shaft is provided with stirring blades (8) and each stirring shaft (7), the lower end of each stirring shaft (7) penetrates through the bottom wall of the reaction tank (1) and is connected with a gear (9), the gears (9) are meshed and connected, and one of the stirring shafts (7) is connected with a driving device (10) for driving the rotation of the stirring shafts (7).

2. The reactor for wet catalytic oxidation treatment of high concentration organic wastewater according to claim 1, wherein: the water inlet pipe (3) is connected with a spraying device (11), the spraying device (11) comprises a spraying block (12), the spraying block (12) is communicated with the water inlet pipe (3), and the spraying block (12) is connected with a plurality of nozzles (13).

3. The reactor for wet catalytic oxidation treatment of high concentration organic wastewater according to claim 1, wherein: drive arrangement (10) are including motor (14), motor (14) are fixed at retort (1) lateral wall, motor (14) output is connected with first band pulley (15), one of them (mixing) shaft (7) are provided with second band pulley (16), first band pulley (15) and second band pulley (16) are connected through hold-in range (17).

4. The reactor for wet catalytic oxidation treatment of high concentration organic wastewater according to claim 1, wherein: the outer wall of the reaction tank (1) is provided with a preheating coil (18).

5. The reactor for wet catalytic oxidation treatment of high concentration organic wastewater according to claim 4, wherein: and a heat-insulating layer (19) is arranged on the outer wall of the reaction tank (1).