CN111498936A

CN111498936A - Flotation cabinet device with multi-stage flow guide and overflow structure

Info

Publication number: CN111498936A
Application number: CN202010478635.8A
Authority: CN
Inventors: 温恩龙; 杨旺; 黄琨; 鲜春媚; 廖聪; 方震; 桂霆
Original assignee: Wuhan No 2 Ship Design Institute No 719 Research Institute of China Shipbuilding Industry Corp
Current assignee: Wuhan No 2 Ship Design Institute No 719 Research Institute of China Shipbuilding Industry Corp
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-08-07
Anticipated expiration: 2040-05-29
Also published as: CN111498936B

Abstract

The invention relates to a flotation cabinet device with a multi-stage diversion and overflow structure, which comprises a flotation cabinet and a solid matter collecting chamber, the flotation device is characterized in that the top of a flotation cabinet body is conical and is provided with an opening, a solid matter collecting chamber is provided with an opening at the bottom, the conical top of the flotation cabinet body is positioned in an inner cavity of the solid matter collecting chamber, a flushing water pipe is arranged in the solid matter collecting chamber, a first-stage, a second-stage and a third-stage diversion trenches are sleeved in the flotation cabinet body step by step and are coaxially arranged with the flotation cabinet body, the top of the first-stage diversion trench is open and is positioned below the lower edge of the conical top of the flotation cabinet body, a domestic sewage inlet pipe is communicated with the first-stage diversion trench, a clear water outlet pipe is communicated with the second-stage diversion trench, two ends of a supernatant inlet pipe are respectively connected with the. The invention has compact arrangement, convenient use, reliable operation, strong processing capability and low energy consumption.

Description

Flotation cabinet device with multi-stage flow guide and overflow structure

Technical Field

The invention relates to ship domestic sewage treatment, in particular to a flotation cabinet device in a multi-stage diversion and overflow structure form.

Background

The domestic sewage treatment is a necessary condition for continuous and normal operation of ships and ocean platforms, and at present, the domestic sewage of the ships and the ocean platforms is treated by a biofilm method or an electrochemical method.

Due to the interactive influence of environmental conditions such as temperature, humidity and swing, retention time, operation mode, discharged water quality, water quantity and other factors, the biomembrane method cannot continuously meet the requirements of discharge standards, so that secondary eutrophication pollution of the water body is caused; secondly, the method has long process flow and large occupied space of equipment. In addition, the method needs to use a membrane component to filter sewage, and the membrane component is expensive, long in cleaning time and high in use cost.

The electrochemical method mainly depends on the discharge between the electrode plates to electrolyze sewage, the electrolysis process needs large current, the energy consumption is too large, the electrode plates are expensive, the required initial investment is higher, in addition, as the electrolysis needs more containers, the weight of the equipment is heavier and explosive gas can be generated in the electrolysis process, the safety requirement on the operation management of the equipment is also high.

Aiming at the defects in the prior art, the invention provides the flotation cabinet device in the form of a multi-stage flow guide and overflow structure, which is compact in arrangement, convenient to use, reliable in operation, strong in treatment capacity and low in energy consumption.

Disclosure of Invention

The invention aims to provide a flotation cabinet device in a multi-stage diversion and overflow structure form, which has the advantages of compact arrangement, convenient use, reliable operation, strong treatment capacity and low energy consumption.

In order to achieve the purpose, the invention adopts the following technical scheme: a flotation cabinet device with a multi-stage flow guide and overflow structure comprises a flotation cabinet body and a solid matter collecting chamber, and is characterized in that the flotation cabinet body is a circular container, the top of the flotation cabinet body is conical, an opening is formed in the central part of the flotation cabinet body, the solid matter collecting chamber is a circular container with an opening in the bottom, the solid matter collecting chamber and the flotation cabinet body are coaxially connected into a whole, the conical top of the flotation cabinet body is positioned in an inner cavity of the solid matter collecting chamber, the solid matter collecting chamber comprises a sealing cover, a vent hole and a solid matter discharge port, a flushing water pipe is arranged at the upper part in the solid matter collecting chamber, a water mist nozzle with a downward opening is arranged on the flushing water pipe, a first-stage flow guide groove, a second-stage flow guide groove and a third-stage flow guide groove of the circular container are sleeved in the flotation, one end of a domestic sewage inlet pipe is communicated with the lower part of the first-level diversion trench, the other end of the domestic sewage inlet pipe penetrates through the flotation tank body and then is connected with a domestic sewage source, the upper edge of the closed top of the second-level diversion trench is 30-40 mm higher than the upper edge of the top of the flotation tank body, one end of a clear water outlet pipe is communicated with the lower section of the second-level diversion trench, the other end of the clear water outlet pipe leads to the outside of the flotation tank body, the top of the third-level diversion trench is opened and is 8-12 mm away from the top end of the second-level diversion trench, two ends of a supernatant inlet pipe are respectively connected with the lower part in the flotation tank body and the bottom section of the third-level diversion trench, a fixed bed reactor is positioned at the middle lower part between the flotation tank body and the first-level diversion trench, radial compressed air straight pipes are respectively arranged above and, the annular compressed air pipe is provided with a second air jet with an upward opening.

Further, the top taper of the flotation cabinet body is 20-30 degrees.

Further, the first-stage diversion trench, the second-stage diversion trench and the third-stage diversion trench are cylindrical containers, and the part of the flotation tank body except the top is a cylindrical container.

Furthermore, the number of the radial compressed air straight pipes is 4-8, and the radial compressed air straight pipes are fixed on the first-stage diversion trench and are uniformly distributed along the circumferential direction of the first-stage diversion trench.

Furthermore, the flotation cabinet body and the solid matter collecting chamber are lined with an anticorrosive coating, and the inside and the outside of the first-stage diversion trench, the second-stage diversion trench and the third-stage diversion trench are respectively coated with the anticorrosive coating.

The invention relates to an integrated container with a multi-stage diversion and overflow structure, which comprises the following steps of:

firstly, saturated air sewage with a flocculant mixture conveyed by an external pipeline enters a primary diversion trench through a domestic sewage inlet pipe, thousands of micro-bubbles begin to be generated in the primary diversion trench, the sewage flows from bottom to top, and the micro-bubbles are expanded and raised continuously. Because the air cushion has been formed to the bubble, the solid particle thing in the sewage promotes to the sewage surface, overflows to flotation cabinet body inner chamber from the top of one-level guiding gutter afterwards, and here, the flocculating agent in the sewage promotes these solid particle thing and forms a solid piece, and the bubble in the sewage makes these solids float on the surface of water. The compressed air around the water surface ejected by the first and second air jets blows the solids to the side and provides an upward hydrodynamic force so that the suspended matter cannot sink and the solid matter is finally discharged in an overflow manner.

The sewage after the first-stage overflow flows downwards under the action of gravity, and is filtered and adsorbed by the fixed bed reactor, so that microorganisms and organic matters are further removed from the sewage. The obtained clean water is supernatant, the supernatant enters the bottom of the third-level diversion trench through the supernatant inlet pipe, then flows from bottom to top, overflows into the second-level diversion trench from the top end of the third-level diversion trench, fine substances are further removed, water quality is cleaner, and finally, the clean water is discharged out of the flotation cabinet body from the lower section of the second-level diversion trench through the clean water outlet pipe.

The invention clarifies sewage by utilizing a mechanical structure through diversion, overflow, filtration and adsorption, does not need expensive equipment, consumes part of active carbon, does not have expensive materials, has low operation cost and particularly avoids high energy consumption. The invention has convenient use, can be used immediately after being opened, does not relate to biological reaction, has no influence on the treatment process by hydraulic load, and even has no influence on the treatment effect after being stopped for a long time. The invention has reliable operation, and compared with the biomembrane method, the operation and the treatment effect of the sewage treatment device can not be influenced because corrosive chemical substances in the sewage kill and kill reactive strains.

The invention has compact arrangement and strong processing capability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a view from A-A of FIG. 1;

FIG. 3 is a view from the B-B direction of FIG. 1;

FIG. 4 is a view from the C-C of FIG. 1;

FIG. 5 is a schematic view of the flotation tank and solid matter collection chamber configuration of the present invention;

FIG. 6 is a schematic view of a flush water pipe configuration of the present invention;

FIG. 7 is a schematic view of the radial compressed air straight tube configuration of the present invention;

FIG. 8 is a schematic view of the configuration of the annular compressed air tube of the present invention.

In the figure: 1-a flotation tank body; 2-a solid matter collection chamber; 2.1-sealing cover; 2.2-vent; 2.3-solid matter discharge; 3-flushing a water pipe; 3.1-water fog nozzle; 4-first-stage diversion trenches; 5-a second-stage diversion trench; 6-third-stage diversion trenches; 7-a domestic sewage inlet pipe; 8-clear water outlet pipe; 9-supernatant inlet pipe; 10-a fixed bed reactor; 11-radial compressed air straight pipe; 11.1-a first gas injection port; 12-circular compressed air tube; 12.1-second gas injection port.

Detailed Description

The present invention is further described with reference to the following drawings and examples, but the examples should not be construed as limiting the present invention.

The flotation cabinet device with the multi-stage flow guide and overflow structure comprises a flotation cabinet body 1 and a solid matter collecting chamber 2, wherein the flotation cabinet body 1 is a circular container, the top of the flotation cabinet body 1 is conical, an opening is formed in the central part of the flotation cabinet body, the solid matter collecting chamber 2 is a circular container with an opening in the bottom, the solid matter collecting chamber 2 and the flotation cabinet body 1 are coaxially connected into a whole, the conical top of the flotation cabinet body 1 is positioned in the inner cavity of the solid matter collecting chamber 2, the solid matter collecting chamber 2 comprises a sealing cover 2.1, a vent 2.2 and a solid matter discharge port 2.3, a flushing water pipe 3 is arranged at the upper part in the solid matter collecting chamber 2, a water mist nozzle 3.1 with a downward opening is arranged on the flushing water pipe 3, a first-stage flow guide groove 4, a second-stage flow guide groove 5 and a third-stage flow guide groove 6 of, the top of the first-level diversion trench 4 is open and is positioned below the lower edge of the conical top of the flotation tank body 1, one end of a domestic sewage inlet pipe 7 is communicated with the lower part of the first-level diversion trench 4, the other end of the domestic sewage inlet pipe 7 penetrates through the flotation tank body 1 and then is connected with a domestic sewage source, the upper edge of the closed top of the second-level diversion trench 5 is 30-40 mm higher than the upper edge of the top of the flotation tank body 1, one end of a clear water outlet pipe 8 is communicated with the lower section of the second-level diversion trench 5, the other end of the clear water outlet pipe 8 leads to the outside of the flotation tank body 1, the top of the third-level diversion trench 6 is open and is 8-12 mm away from the top of the second-level diversion trench 5, two ends of a supernatant inlet pipe 9 are respectively connected with the lower part in the flotation tank body 1 and the bottom section of the third-level diversion, The below is provided with radial compressed air straight tube 11 respectively, is provided with the first air jet 11.1 that the opening is up on the radial compressed air straight tube 11, and ring form compressed air pipe 12 is fixed at the top segment of one-level guiding gutter 4, is provided with the second air jet 12.1 that the opening is up on ring form compressed air pipe 12.

The preferred embodiments are: in the scheme, the top taper of the flotation tank body 1 is 20-30 degrees.

The preferred embodiments are: in the above scheme, the first-stage diversion trench 4, the second-stage diversion trench 5 and the third-stage diversion trench 6 are cylindrical containers, and the part of the flotation tank body 1 except the top is a cylindrical container.

The preferred embodiments are: in the above scheme, the number of the radial compressed air straight pipes 11 is 4-8, and the radial compressed air straight pipes 11 are fixed on the first-stage diversion trench 4 and are uniformly arranged along the circumferential direction of the first-stage diversion trench 4.

The preferred embodiments are: in the scheme, the flotation tank body 1 and the solid matter collecting chamber 2 are lined with anticorrosive coatings, and the inside and the outside of the first-stage diversion trench 4, the second-stage diversion trench 5 and the third-stage diversion trench 6 are respectively coated with anticorrosive coatings.

Details not described in the present specification are prior art known to those skilled in the art.

Claims

1. A flotation tank arrangement in the form of a multistage flow guiding and overflow construction, comprising a flotation tank (1) and a solid matter collecting chamber (2), characterized in that: the flotation tank body (1) is a circular container, the top of the flotation tank body (1) is conical, an opening is formed in the central part of the flotation tank body, the solid matter collecting chamber (2) is a circular container with an opening in the bottom, the solid matter collecting chamber (2) and the flotation tank body (1) are coaxially connected into a whole, the conical top of the flotation tank body (1) is located in the inner cavity of the solid matter collecting chamber (2), the solid matter collecting chamber (2) comprises a sealing cover (2.1), a vent (2.2) and a solid matter discharge port (2.3), a flushing water pipe (3) is arranged at the upper part in the solid matter collecting chamber (2), a water spray nozzle (3.1) with a downward opening is arranged on the flushing water pipe (3), a first-stage diversion groove (4), a second-stage diversion groove (5) and a third-stage diversion groove (6) of the circular container are sleeved in the flotation tank body (1) step by step and are coaxially arranged with the flotation tank body (1), the top of the first-stage diversion, one end of a domestic sewage inlet pipe (7) is communicated with the lower part of the first-level diversion trench (4), the other end of the domestic sewage inlet pipe (7) penetrates through the flotation tank body (1) and then is connected with a domestic sewage source, the upper edge of the closed top of the second-level diversion trench (5) is 30-40 mm higher than the upper edge of the top of the flotation tank body (1), one end of a clear water outlet pipe (8) is communicated with the lower section of the second-level diversion trench (5), the other end of the clear water outlet pipe (8) leads to the outside of the flotation tank body (1), the top of the third-level diversion trench (6) is opened and is 8-12 mm away from the top end of the second-level diversion trench (5), two ends of a supernatant inlet pipe (9) are respectively connected with the lower part in the flotation tank body (1) and the bottom section of the third-level diversion trench (6), a fixed bed reactor (10) is positioned, the upper part and the lower part of the fixed bed reactor (10) are respectively provided with a radial compressed air straight pipe (11), the radial compressed air straight pipe (11) is provided with a first air nozzle (11.1) with an upward opening, a circular compressed air pipe (12) is fixed at the top section of the first-stage diversion trench (4), and the circular compressed air pipe (12) is provided with a second air nozzle (12.1) with an upward opening.

2. The flotation tank arrangement in the form of a multi-stage flow directing and overflowing structure of claim 1, wherein: the top taper of the flotation tank body (1) is 20-30 degrees.

3. The flotation tank arrangement in the form of a multi-stage flow directing and overflow construction according to claim 1 or 2, wherein: the flotation tank body is characterized in that the first-stage diversion trench (4), the second-stage diversion trench (5) and the third-stage diversion trench (6) are cylindrical containers, and the flotation tank body (1) is a cylindrical container except the top.

4. The flotation tank arrangement in the form of a multi-stage flow directing and overflow construction according to claim 1 or 2, wherein: the number of the radial compressed air straight pipes (11) is 4-8, and the radial compressed air straight pipes (11) are fixed on the first-stage diversion trench (4) and are uniformly arranged along the circumferential direction of the first-stage diversion trench (4).

5. A flotation tank arrangement in the form of a multi-stage flow directing and overflow construction according to claim 3 wherein: the number of the radial compressed air straight pipes (11) is 4-8, and the radial compressed air straight pipes (11) are fixed on the first-stage diversion trench (4) and are uniformly arranged along the circumferential direction of the first-stage diversion trench (4).

6. The flotation tank arrangement in the form of a multi-stage flow directing and overflow construction according to claim 1 or 2, wherein: the flotation tank body (1) and the solid matter collecting chamber (2) are lined with anticorrosive coatings, and the anticorrosive coatings are respectively coated inside and outside the first-stage diversion trench (4), the second-stage diversion trench (5) and the third-stage diversion trench (6).

7. A flotation tank arrangement in the form of a multi-stage flow directing and overflow construction according to claim 3 wherein: the flotation tank body (1) and the solid matter collecting chamber (2) are lined with anticorrosive coatings, and the anticorrosive coatings are respectively coated inside and outside the first-stage diversion trench (4), the second-stage diversion trench (5) and the third-stage diversion trench (6).

8. The flotation tank arrangement in the form of a multi-stage flow directing and overflowing structure of claim 4, wherein: the flotation tank body (1) and the solid matter collecting chamber (2) are lined with anticorrosive coatings, and the anticorrosive coatings are respectively coated inside and outside the first-stage diversion trench (4), the second-stage diversion trench (5) and the third-stage diversion trench (6).

9. The flotation tank arrangement in the form of a multi-stage flow directing and overflowing structure of claim 5, wherein: the flotation tank body (1) and the solid matter collecting chamber (2) are lined with anticorrosive coatings, and the anticorrosive coatings are respectively coated inside and outside the first-stage diversion trench (4), the second-stage diversion trench (5) and the third-stage diversion trench (6).