CN210635794U

CN210635794U - Sewage treatment device

Info

Publication number: CN210635794U
Application number: CN201921389193.9U
Authority: CN
Inventors: 谢洁云; 冯境华; 王国彬; 朱枭强; 陈博; 叶彬
Original assignee: Zhaoqing Pengkai Environmental Protection Equipment Co ltd; Guangzhou Pengkai Environment Technology Co ltd
Current assignee: Guangdong Pengkai Intelligent Equipment Manufacturing Co ltd; Pengkai Environmental Technology Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-05-29
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses a sewage treatment device, it includes first silo, the bottom of first silo is equipped with first aeration equipment, the middle part of first silo is equipped with the three-phase separator, be equipped with an at least drainage pipe that can discharge after-separating gas on the three-phase separator, the top of three-phase separator is equipped with the settling zone, be equipped with many pipe chute in the settling zone. The first aeration device is started, the sewage and the activated sludge are subjected to nitration reaction, the mixture after nitration reaction enters the three-phase separator, the gas is discharged through the discharge pipe, and the sludge-water mixed liquid is subjected to denitrification reaction above the three-phase separator and flows through the inclined pipe of the settling zone. Because the muddy water mixed liquid flows through the inclined tube, the contact area between the activated sludge in the muddy water mixed liquid and the sedimentation area is large, and the activated sludge can be attached to the tube wall of the inclined tube and does not run off along with the effluent. The utility model discloses reduced the suspended solid concentration of play water, also improved activated sludge's utilization ratio, reduced sewage treatment's cost.

Description

Sewage treatment device

Technical Field

The utility model relates to a sewage treatment device in the sewage treatment field.

Background

The activated sludge process in water environment treatment is the most common treatment mode at present, the process is simple, and the optimal treatment effect of the unit can be achieved by combining all devices in the unit and controlling the conditions of carbon-nitrogen ratio, temperature, pH and the like in all the devices. However, the treatment cost of secondary pollution (sludge cake) generated after treatment is too high, besides high water content, effective sludge is discharged outside without reaching the sludge age, activated sludge cannot be fully utilized, and the sludge content of treated effluent is increased, so that the sludge treatment cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewage treatment plant, it can improve the utilization ratio of mud to make the water quality improve.

The utility model provides a solution of its technical problem is: a sewage treatment device comprises a first bin, wherein a first aeration device is arranged at the bottom of the first bin, a three-phase separator is arranged in the middle of the first bin, at least one drainage pipe capable of draining separated gas is arranged on the three-phase separator, a settling zone is arranged above the three-phase separator, and a plurality of inclined pipes are arranged in the settling zone.

As a further improvement of the technical scheme, the device further comprises a second bin surrounding the outer side of the first bin, an outlet of the drainage pipe extends into the second bin, an aerobic area is formed between the first aeration device and the three-phase separator, and the aerobic area is communicated with the second bin through a backflow hole.

As a further improvement of the above technical solution, the three-phase separator includes at least one separation layer, each separation layer includes at least one inverted V-shaped gas collecting channel, gas collecting pipes are disposed below the gas collecting channels, and the gas collecting pipes are connected to inlets of the exhaust pipes.

As a further improvement of the technical scheme, a second aeration device is arranged at the bottom of the second bin.

As a further improvement of the above technical solution, the first cartridge and the second cartridge are integrally formed.

As a further improvement of the above technical solution, an effluent weir assembly is arranged above the three-phase separator, the effluent weir assembly comprises at least one main weir and at least one auxiliary weir, the height of the main weir is smaller than that of the auxiliary weir, and the main weir is vertically communicated with the auxiliary weir.

The utility model has the advantages that: the first aeration device is started, the sewage and the activated sludge are subjected to nitration reaction, the mixture after nitration reaction enters the three-phase separator, the gas is discharged through the discharge pipe, and the sludge-water mixed liquid is subjected to denitrification reaction above the three-phase separator and flows through the inclined pipe of the settling zone. Because the muddy water mixed liquid flows through the inclined tube, the contact area between the activated sludge in the muddy water mixed liquid and the sedimentation area is large, and the activated sludge can be attached to the tube wall of the inclined tube and does not run off along with the effluent. The utility model discloses reduced the suspended solid concentration of play water, also improved activated sludge's utilization ratio, reduced sewage treatment's cost.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a front sectional view of the present invention;

FIG. 2 is an enlarged schematic view of circle a in FIG. 1;

fig. 3 is a top view of the first cartridge of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions.

Referring to fig. 1-2, a sewage treatment device comprises a first bin 1, wherein a first aeration device 3 is arranged at the bottom of the first bin 1, a three-phase separator 5 is arranged in the middle of the first bin 1, at least one drainage pipe 6 capable of draining separated gas is arranged on the three-phase separator 5, a settling zone is arranged above the three-phase separator 5, and a plurality of inclined pipes 7 are arranged in the settling zone. Activated sludge is put into the bottom of the first bin 1, the first aeration device 3 is started, and sewage is introduced. The sewage is subjected to nitration reaction with oxygen and activated sludge in the aerobic zone, a mixture consisting of the activated sludge, the oxygen and the nitrated water enters the three-phase separator 5 for separation, wherein gas is discharged through the discharge pipe 6, and the anaerobic zone is formed above the three-phase separator 5. Most of the activated sludge can not sink back to the aerobic zone through the three-phase separator 5, and a small part of the activated sludge can not be completely separated by the three-phase separator 5 and forms sludge-water mixed liquor with the liquid to enter the anaerobic zone. The sludge-water mixed liquor is subjected to denitrification reaction in an anaerobic zone above the three-phase separator 5, and simultaneously overflows upwards into a settling zone. The muddy water mixed liquid flows through the inclined tube 7, and the inclined tube 7 greatly increases the contact area of the muddy water mixed liquid and the sedimentation area, so that the activated sludge in the muddy water mixed liquid can be attached to the tube wall of the inclined tube 7. Activated sludge gradually slides down and continuously accumulates from the inclined tube 7 under the action of gravity, finally drops in the aerobic zone after passing through the three-phase separator 5, and the setting of the settling zone reduces the amount of the activated sludge lost along with the effluent, thereby improving the quality of the effluent, fully utilizing the sludge and reducing the sewage treatment cost.

Further as a preferred embodiment, the device also comprises a second bin 2 surrounding the outer side of the first bin 1, the outlet of the drainage pipe 6 extends into the second bin 2, an aerobic area is formed between the first aeration device 3 and the three-phase separator 5, and the aerobic area is communicated with the second bin 2 through a backflow hole. Preferably, the first cartridge 1 and the second cartridge 2 may be integrally formed. Activated sludge is placed at the bottom of the second silo 2. The three-phase separator 5 separates the obtained gas, most of the activated sludge and sludge-water mixed liquor containing a small amount of activated sludge, and most of the activated sludge is settled back to the aerobic zone for continuous reaction. And a part of the muddy water mixed liquid enters the inlet of the discharge pipe 6 under the action of gas stripping and is discharged to the second bin 2 together with the gas. The gas escapes from the liquid level after entering the second bin 2, and the muddy water mixed liquid flowing out of the first bin 1 is mixed with the sewage of the second bin 2 and flows downwards to carry out denitrification reaction with the activated sludge under the anaerobic condition. The mixture of liquid and activated sludge in the second silo 2 then flows back into the aerobic zone through the return openings. The remaining part of the sludge-water mixed liquid separated from the three-phase separator 5 overflows upwards and undergoes denitrification reaction, and then water is discharged. The sewage can form backflow between the first bin 1 and the second bin 2, and the nitrogen removal effect on the sewage is enhanced.

Further as a preferred embodiment, the three-phase separator 5 comprises at least one separation layer, each separation layer comprises at least one inverted V-shaped gas-collecting channel, and a gas-collecting pipe is arranged below each gas-collecting channel and connected to the inlet of the exhaust pipe 6. Preferably, three separation layers are arranged in the three-phase separator 5, each separation layer is provided with more than three gas-collecting hoods, and the gas-collecting hoods positioned at the middle layer and the bottom layer are distributed below the gaps of the gas-collecting hoods at the top layer so as to ensure that activated sludge can be well intercepted and gas can be collected.

In a further preferred embodiment, the bottom of the second bin 2 is provided with a second aeration device 4. The second aeration device 4 can be started in a short time at regular time to mix and stir the sewage and the activated sludge of the second bin 2, so that the contact area of the sewage and the activated sludge is increased, and the denitrification efficiency is improved.

Further as a preferred embodiment, referring to fig. 3, an effluent weir assembly 8 is provided above the three-phase separator 5, the effluent weir assembly 8 comprises at least one main weir 81 and at least one auxiliary weir 82, the height of the main weir 81 is smaller than that of the auxiliary weir 82, and the main weir 81 is vertically communicated with the auxiliary weir 82. Preferably, the main weir 81 and the auxiliary weir 82 are both toothed weirs. In this embodiment, the effluent weir assembly 8 includes two main weirs 81 and ten auxiliary weirs 82, each auxiliary weir 82 being in communication with two main weirs 81, each auxiliary weir 82 being equally spaced. When the liquid level in the first bin 1 reaches the height of the main weir 81, the effluent flows away along the main weir 81, and at least one end of the main weir 81 is provided with a water outlet and is connected with a water pipe. When the water output of the first bin 1 is large, the main weir 81 is difficult to drain the effluent in time, the liquid level of the first bin 1 rises to the height of the auxiliary weir 82, the effluent flows into the auxiliary weir 82, the auxiliary weir 82 stores a part of the effluent, and when the water output of the main weir 81 is reduced, the effluent on the auxiliary weir 82 is discharged onto the main weir 81 and then flows away. The effluent weir component 8 controls the flow of effluent water, so that the flow velocity is uniform.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. A sewage treatment device is characterized in that: the device comprises a first bin (1), wherein a first aeration device (3) is arranged at the bottom of the first bin (1), a three-phase separator (5) is arranged in the middle of the first bin (1), at least one drainage pipe (6) capable of draining separated gas is arranged on the three-phase separator (5), a settling zone is arranged above the three-phase separator (5), and a plurality of inclined pipes (7) are arranged in the settling zone.

2. The sewage treatment apparatus of claim 1, wherein: the device is characterized by further comprising a second bin (2) surrounding the first bin (1), wherein an outlet of the drainage pipe (6) extends into the second bin (2), an aerobic area is formed between the first aeration device (3) and the three-phase separator (5), and the aerobic area is communicated with the second bin (2) through a backflow hole.

3. The sewage treatment apparatus according to claim 2, wherein: the three-phase separator (5) comprises at least one layer of separation layer, each separation layer comprises at least one inverted V-shaped gas collecting hood, gas collecting pipes are arranged below the gas collecting hoods and are connected to inlets of the discharge pipes (6).

4. The sewage treatment apparatus according to claim 2, wherein: and a second aeration device (4) is arranged at the bottom of the second bin (2).

5. The sewage treatment apparatus according to claim 2, wherein: the first bin (1) and the second bin (2) are integrally formed.

6. The sewage treatment apparatus of claim 1, wherein: the top of three-phase separator (5) is equipped with out weir subassembly (8), it includes at least one main weir (81) and at least one vice weir (82) to go out weir subassembly (8), the weir height of main weir (81) is less than the weir height of vice weir (82), main weir (81) and perpendicular intercommunication of vice weir (82).