Three-dimensional circulating oxidation ditch equipment

Abstract

The invention discloses three-dimensional circulating oxidation ditch equipment which solves the problem of unicity of circulating flow of a mixed solution of sewage and activated sludge and improves the sewage treatment effect of different types of microorganisms. According to the technical scheme, the device comprises a shell, a treatment chamber and a settling chamber, the treatment chamber and the settling chamber are both arranged in the shell, and the settling chamber is arranged at one end of the treatment chamber; a shunting layer partition plate is arranged in the treatment chamber and is used for dividing the treatment chamber into an upper-layer channel and a lower-layer channel, an impeller aeration device is arranged at the top of the upper-layer channel, and a plug flow pump is arranged at one end, close to the settling chamber, of the lower-layer channel; a sewage inlet and a stirring shaft are vertically arranged in the middle of the settling chamber, the stirring shaft and the sewage inlet are coaxially arranged, a settling pond is arranged below the stirring shaft, a sludge pump is arranged at the bottom of the settling pond and communicated with the plug flow pump, and a water outlet is further formed in the side wall of the settling chamber.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and particularly relates to a three-dimensional circulating oxidation ditch device. Background Art

[0002] The statements in this part only provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] As an important sewage treatment technology, the oxidation ditch has an enclosed ditch-shaped aeration tank, and the mixed liquid of wastewater and activated sludge continuously circulates therein, having many advantages. The treatment scope can not only treat domestic sewage, but also treat industrial wastewater and urban wastewater.

[0004] Traditional oxidation ditches have various layout forms, including common rotary brush type, vertical aeration impeller type, rotary disc aeration type, blower aeration type, etc. The operation modes are divided into continuous type and divided-channel type. Generally, the sludge sedimentation tank and the aeration tank are built separately or jointly, and the ditches mostly adopt a planar layout. However, with the continuous change of sewage treatment requirements and the development of technology, higher requirements are put forward for aspects such as the treatment efficiency, space utilization, temperature control, and equipment flexibility of the oxidation ditch. The existing oxidation ditches have problems such as the single circulation flow of the mixed liquid of sewage and activated sludge, and the inability to maintain the treatment temperature in cold regions; in response to the need for rapid construction of sewage treatment facilities in different scenarios, the existing oxidation ditch equipment also has problems of poor modularity and mobility. Summary of the Invention

[0005] In view of the above problems, the present invention provides a three-dimensional circulating oxidation ditch device, which solves the problem of the single circulation flow of the mixed liquid of sewage and activated sludge, and relies on the aerobic environment in the upper layer and the anaerobic environment in the lower layer to improve the treatment effect of different types of microorganisms on sewage, and at the same time improves the mobility and flexibility of the equipment.

[0006] To achieve the above object, the present invention is realized by the following technical solutions:

[0007] In a first aspect, the present invention provides a three-dimensional circulating oxidation ditch device, including: a housing, a treatment chamber, and a sedimentation chamber; the treatment chamber and the sedimentation chamber are both arranged in the housing, and the sedimentation chamber is arranged at one end of the treatment chamber; a flow splitting layer partition is arranged inside the treatment chamber for dividing the treatment chamber into an upper channel and a lower channel, and the two ends of the upper channel and the lower channel are communicated. An impeller aeration device is arranged at the top of the upper channel, and a push flow pump is arranged at one end of the lower channel close to the sedimentation chamber.

[0008] In the middle of the sedimentation chamber, a sewage inlet and a stirring shaft are vertically arranged. The stirring shaft and the sewage inlet are coaxially arranged. Below the stirring shaft, a sedimentation tank is provided. At the bottom of the sedimentation tank, a sludge pump is provided. The sludge pump is communicated with the push flow pump for quantitatively returning the sludge. A drain port is also provided on the side wall of the sedimentation chamber.

[0009] Furthermore, a zigzag weir trough is arranged at the upper part of the sedimentation chamber for screening floating objects, and the filtered clear water overflows to the drain port.

[0010] Furthermore, the housing is a steel welded tank structure, with an anti-corrosion coating sprayed inside and heat preservation materials and a protective plate provided outside.

[0011] Furthermore, a steam heating pipeline is installed in the heat preservation materials for maintaining the treatment temperature in the treatment chamber and the sedimentation chamber.

[0012] Furthermore, the impeller aeration device consists of a motor and an impeller. The motor is installed at the top of the upper channel, and the impeller is installed on the output shaft of the motor.

[0013] Furthermore, the sewage inlet is in the shape of a horn with the opening facing downwards, and the sedimentation tank is in the shape of a horn with the opening facing upwards, and the size of the sewage inlet is much smaller than the opening of the sedimentation tank.

[0014] Furthermore, the outlet of the sludge pump is coaxially arranged with the push flow pump.

[0015] Furthermore, manhole inspection covers are provided at the upper parts of the treatment chamber and the sedimentation chamber as the inspection, maintenance and protective covers of the equipment.

[0016] Furthermore, the treatment chamber is connected to the sewage inlet through a connecting pipeline for sending sewage into the sedimentation chamber and flowing into the sedimentation tank at the bottom of the sedimentation chamber through the sewage inlet.

[0017] In the second aspect, the present invention also provides a transport vehicle, and the above-mentioned three-dimensional circulating oxidation ditch equipment is installed on the transport vehicle.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are:

[0019] The present invention solves the problem of the singularity of the circulating flow of the sewage and activated sludge mixture by arranging a flow dividing layer partition in the middle of the treatment chamber, dividing the channel into upper and lower layers, enhancing the fluidity of the water flow and the treatment effect. The push-flow pump in the lower channel cooperates with the impeller aeration device in the upper channel, enabling the sewage to circulate between the upper and lower layers, avoiding the possible dead zones and short-circuit phenomena of the water flow in the traditional oxidation ditch, ensuring that the sewage fully contacts and reacts with the activated sludge, and improving the treatment efficiency. The three-dimensional circulation design of the equipment not only strengthens the sewage treatment capacity but also realizes an aerobic environment in the upper layer and an anaerobic environment in the lower layer, which is conducive to the functioning of different types of microorganisms, and has a more significant treatment effect on domestic sewage, industrial wastewater, and urban wastewater, expanding the application scope of the oxidation ditch technology.

[0020] The present invention solves the problem of poor separation effect between clear water and sediment during the sewage sedimentation process by coaxially arranging a stirring shaft at the water inlet. The horn-shaped sewage inlet with the opening facing downward and the horn-shaped sedimentation tank with the opening facing upward directly send the sewage into the sedimentation tank, effectively avoiding the contamination of the already sedimented clear water by the newly entered sewage, and the regular stirring of the stirring shaft ensures sufficient sedimentation time for the sewage, improves the separation effect between clear water and sediment, and reduces the subsequent treatment difficulty.

[0021] Through modular design, the oxidation ditch equipment of the present invention can be installed on transport vehicles, meeting the road transportation conditions, greatly shortening the construction period of sewage treatment facilities, and being particularly suitable for temporary or emergency sewage treatment projects. Moreover, this design reduces the requirements for vehicle size, reduces the cost and difficulty of equipment transportation and installation, improves the mobility and flexibility of the equipment, provides strong support for the rapid deployment and wide application of sewage treatment, and promotes the efficient application and development of the oxidation ditch technology in more scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The schematic diagrams in the specification that form a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0023] Figure 1 It is a schematic diagram of the overall structure of the oxidation ditch equipment of the present invention.

[0024] In the figure: 1, treatment chamber; 2, sedimentation chamber; 3, impeller; 4, motor; 5, push-flow pump; 6, sludge pump; 7, flow dividing layer partition; 8, sewage inlet; 9, stirring shaft; 10, drain outlet; 11, connecting pipeline; 12, weir trough; 13, heating pipeline; 14, protective plate; 15, heat insulation cotton; 16, manhole inspection cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention pertains.

[0026] It should be noted that the terms used herein are merely for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the present invention clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof;

[0027] A three-dimensional circulating oxidation ditch device disclosed in this embodiment, as Figure 1 shown, includes: a housing, a treatment chamber 1 and a sedimentation chamber 2; both the treatment chamber 1 and the sedimentation chamber 2 are arranged in the housing, and the sedimentation chamber 2 is arranged at one end of the treatment chamber 1; a diversion layer partition 7 is arranged inside the treatment chamber 1 for dividing the treatment chamber 1 into an upper channel and a lower channel, and the two ends of the upper channel and the lower channel are communicated. An impeller 3 aeration device is arranged at the top of the upper channel, and a pusher pump 5 is arranged at one end of the lower channel close to the sedimentation chamber 2;

[0028] A sewage inlet 8 and a stirring shaft 9 are vertically arranged in the middle of the sedimentation chamber 2. The stirring shaft 9 and the sewage inlet 8 are coaxially arranged. A sedimentation tank is arranged below the stirring shaft 9, and a sludge pump 6 is arranged at the bottom of the sedimentation tank. The sludge pump 6 is communicated with the pusher pump 5 for quantitative return of sludge; a drain port 10 is also arranged on the side wall of the sedimentation chamber 2.

[0029] A diversion layer partition 7 is arranged in the middle of the treatment chamber 1 to divide the channel into upper and lower channels. Under the action of the pusher pump 5 arranged in the lower channel, sewage circulates between the upper and lower channels; the impeller 3 aeration device arranged in the upper channel has both aeration and pushing functions; at the same time, the impeller 3 aeration device arranged in the upper channel can also form an obvious oxygen concentration gradient, realizing aerobic in the upper layer and anaerobic in the lower layer, which is beneficial for different types of microorganisms to play their roles, and the treatment effect on domestic sewage, industrial wastewater and urban wastewater is more remarkable, expanding the application range of the oxidation ditch technology.

[0030] Manhole inspection covers 16 are arranged on the upper parts of both the treatment chamber 1 and the sedimentation chamber 2 as the equipment for maintenance and protection.

[0031] A serrated weir trough 12 is provided at the upper part of the sedimentation chamber 2 for screening floating substances, and the filtered clear water overflows to the drain port 10. Specifically, the clear water and floating substances after sewage sedimentation overflow through the serrated weir trough 12 to the drain port 10. The serrated weir trough 12 screens the floating substances, and the floating substances can be regularly cleaned through the manhole inspection cover 16 at the upper part of the sedimentation chamber 2.

[0032] Furthermore, the housing is a steel welded tank structure, internally sprayed with an anti-corrosion coating, and externally provided with heat-insulating materials and attached with a protective plate 14.

[0033] A steam heating pipeline 13 is installed in the heat-insulating materials for maintaining the treatment temperature in the treatment chamber 1 and the sedimentation chamber 2. Specifically, heat-insulating cotton 15 and a protective plate 14 are installed around the housing of the equipment, and the steam heating pipeline 13 is installed, effectively maintaining the treatment temperature in the oxidation ditch. Even in winter in cold regions, good treatment effects can be maintained.

[0034] The impeller 3 aeration device consists of a motor 4 and an impeller 3. The motor 4 is installed at the top of the upper channel, and the impeller 3 is installed on the output shaft of the motor 4.

[0035] The sewage inlet 8 is in the shape of a horn with an opening downward, and the sedimentation tank is in the shape of a horn with an opening upward. Moreover, the size of the sewage inlet 8 is much smaller than the opening of the sedimentation tank, which can directly send the sewage into the sedimentation tank, effectively avoiding the situation that the newly entered sewage pollutes the already sedimented clear water. By coaxially installing a stirring shaft 9 at the water inlet, the sludge is regularly stirred to avoid poor separation effect between the clear water and the sediment during the sewage sedimentation process. Regular stirring through the stirring shaft 9 can enable the sewage to have sufficient sedimentation time and improve the separation effect between the clear water and the sediment.

[0036] The outlet of the sludge pump 6 is coaxially arranged with the push flow pump 5. Specifically, the sedimented sludge is quantitatively returned to the lower channel through the sludge pump 6 and evenly distributed in the treatment chamber 1 under the combined action of the push water pump.

[0037] The treatment chamber 1 is connected to the sewage inlet 8 through a connecting pipeline 11 for sending sewage into the sedimentation chamber 2 and flowing into the sedimentation tank at the bottom of the sedimentation chamber 2 through the sewage inlet 8.

[0038] Second aspect, the present invention also provides a transport vehicle, and the above-mentioned three-dimensional circulating oxidation ditch equipment is installed on the transport vehicle. By modularizing the oxidation ditch treatment chamber 1 and the sedimentation chamber 2 and installing them on a transport vehicle, it can meet the road transportation conditions, shorten the construction period of sewage treatment facilities, and is especially suitable for temporary or emergency sewage treatment projects; this design reduces the requirements for vehicle size, reduces the cost and difficulty of equipment transportation and installation, improves the mobility and flexibility of the equipment, provides strong support for the rapid deployment and wide application of sewage treatment, and promotes the efficient application and development of oxidation ditch technology in more scenarios.

[0039] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that, based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A three-dimensional circulation oxidation ditch equipment, characterized in that: include: A shell, a treatment chamber and a sedimentation chamber; the treatment chamber and the sedimentation chamber are both arranged in the shell, and the sedimentation chamber is arranged at one end of the treatment chamber; a flow dividing layer partition is arranged inside the treatment chamber, which is used to divide the treatment chamber into an upper channel and a lower channel, and the two ends of the upper channel and the lower channel are connected, an impeller aeration device is arranged on the top of the upper channel, and a plug flow pump is arranged at one end of the lower channel close to the sedimentation chamber; A sewage inlet and a stirring shaft are vertically arranged in the middle of the sedimentation chamber, the stirring shaft and the sewage inlet are coaxially arranged, a sedimentation tank is arranged below the stirring shaft, a sludge pump is arranged at the bottom of the sedimentation tank, and the sludge pump is connected to the plug flow pump for quantitative return of sludge; a discharge port is also arranged on the side wall of the sedimentation chamber.

2. A three-dimensional circulation oxidation ditch equipment as claimed in claim 1, characterized in that: A sawtooth weir groove is arranged on the upper part of the sedimentation chamber to screen out floating objects, and the filtered clean water overflows to the drainage port.

3. A three-dimensional circulation oxidation ditch equipment as claimed in claim 1, characterized in that: The shell adopts a steel welded tank structure, with an anti-corrosion coating sprayed on the inside and a heat-insulating material and a protective plate attached to the outside.

4. A three-dimensional circulation oxidation ditch equipment as claimed in claim 3, characterized in that: A steam heating pipeline is arranged in the thermal insulation material to maintain the processing temperature in the processing chamber and the precipitation chamber.

5. A three-dimensional circulation oxidation ditch equipment as claimed in claim 1, characterized in that: The impeller aeration device is composed of a motor and an impeller. The motor is installed on the top of the upper channel, and the impeller is installed on the output shaft of the motor.

6. A three-dimensional circulation oxidation ditch equipment as claimed in claim 1, characterized in that: The sewage inlet is in the shape of a trumpet with an opening facing downward, and the sedimentation tank is in the shape of a trumpet with an opening facing upward, and the size of the sewage inlet is much smaller than the opening of the sedimentation tank.

7. A three-dimensional circulation oxidation ditch equipment as claimed in claim 1, characterized in that: The outlet of the sludge pump is coaxially arranged with the plug flow pump.

8. A three-dimensional circulation oxidation ditch equipment as claimed in claim 1, characterized in that: The upper parts of the processing chamber and the precipitation chamber are both provided with manhole inspection covers, which serve as inspection, maintenance and protection covers for the equipment.

9. A three-dimensional circulation oxidation ditch equipment as claimed in claim 8, characterized in that: The treatment chamber is connected to the sewage inlet through a connecting pipeline, and is used to send the sewage into the sedimentation chamber, and the sewage flows into the sedimentation tank at the bottom of the sedimentation chamber through the sewage inlet.

10. A transport vehicle, characterized in that: The transport vehicle is equipped with a three-dimensional circulation oxidation ditch equipment as described in claims 1-9.

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