Oil-water separation type drainage ditch structure

Abstract

The utility model discloses an oil-water separation type drainage ditch structure which comprises an oil-containing waste water ditch, a separation pit with the bottom lower than the oil-containing waste water ditch is arranged on the oil-containing waste water ditch, and an oil blocking partition plate which is not in contact with the bottom of the separation pit is arranged on the separation pit. The bottom of the separation pit is communicated with a first sludge discharge pipe, and one end of the first sludge discharge pipe is communicated with the sludge deposition well; an oil collecting well is arranged on one side of the separation pit, an oil overflow groove is formed between the oil collecting well and the oily wastewater ditch, and the oil overflow groove is higher than the bottom of the oil blocking partition plate. Oil-water separation can be achieved, a large amount of sludge deposited in the oil-containing wastewater ditch can be separated, and the drainage ditch is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage ditches, in particular to an oil-water separation type drainage ditch structure. Background Art

[0002] Aircraft hangar maintenance wastewater, oil depot flushing wastewater, petrochemical production area maintenance flushing wastewater, etc. in the airport are all oily wastewater. The existing airport oily wastewater is generally directly drained to the accident oil pool through drainage ditches for recycling and treatment.

[0003] However, since the wastewater is a mixture of water and oil, it is difficult to separate and utilize, resulting in high subsequent processing costs. In order to achieve oil-water treatment, the existing utility model with application number CN202320374636.7 discloses a "control device for oily wastewater in an aircraft hangar", which is equipped with an oily wastewater collection device to effectively intercept oily wastewater and rainwater, and effectively separate oily wastewater and rainwater. However, the above structure can only achieve oil-water separation, and cannot separate the large amount of silt deposited in the oily wastewater ditch, which can easily cause the drainage ditch to be blocked. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an oil-water separation type drainage ditch structure, which can not only realize oil-water separation, but also separate a large amount of silt deposited in the oily wastewater ditch to avoid clogging of the drainage ditch.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The utility model provides an oil-water separation drainage ditch structure, comprising an oily wastewater ditch, wherein a separation pit with a bottom lower than the oily wastewater ditch is arranged on the oily wastewater ditch.

[0007] The separation pit is provided with an oil blocking baffle which is not in contact with the bottom of the separation pit;

[0008] The bottom of the separation pit is connected to a first mud discharge pipe, one end of which is connected to a mud accumulation well;

[0009] An oil collecting well is arranged on one side of the separation pit, an oil overflow trough is arranged between the oil collecting well and the oily wastewater ditch, and the height of the oil overflow trough is higher than the bottom of the oil blocking baffle.

[0010] The utility model has the following advantages:

[0011] This solution sets up a separation pit on the oily wastewater ditch, uses the oil-blocking baffle on the separation pit to intercept the waste oil, and separates the waste oil through the oil overflow tank; the separation pit can achieve sludge sedimentation, and discharge it to the sludge well through the sludge discharge pipe, so as to separate the sludge and avoid wastewater clogging the drainage ditch at the rear end. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 AA view;

[0015] Figure 3 for Figure 1 BB view;

[0016] Figure 4 for Figure 1 CC view of the . DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figures 1 to 4 As shown, the utility model discloses an oil-water separation drainage ditch structure, comprising an oily wastewater ditch 1, wherein the oily wastewater ditch 1 is provided with a separation pit 5 whose bottom is lower than the oily wastewater ditch 1.

[0024] An oil-blocking baffle 6 which is not in contact with the bottom of the separation pit 5 is provided on the separation pit 5;

[0025] The bottom of the separation pit 5 is connected with a first mud discharge pipe 8, one end of which is connected with the mud accumulation well 4;

[0026] An oil collecting well 3 is arranged on one side of the separation pit 5 , and an oil overflow trough is arranged between the oil collecting well 3 and the oily wastewater ditch 1 , and the height of the oil overflow trough is higher than the bottom of the oil blocking baffle 6 .

[0027] With the above structure, the oil collecting well 3 is arranged on one side of the separation pit 5. When the wastewater blocked by the oil blocking baffle 6 reaches the bottom of the oil overflow tank, it enters the oil collecting well 3 through the oil overflow tank to achieve waste oil separation.

[0028] The bottom of the separation pit 5 is at the bottom of the oily wastewater ditch 1 and has a slow flow effect to a certain extent. The sludge is deposited here at an accelerated rate and then enters the sludge well 4 through the first sludge discharge pipe 8 to achieve sludge separation.

[0029] In order to prevent the waste residue from entering the separation pit 5 or the oil collecting well 3 and causing blockage, a slag blocking net 2 is provided on the oily wastewater ditch 1, and the oil overflow tank is placed between the slag blocking net 2 and the oil blocking baffle 6. That is, with the above structure, the slag blocking net 2 is placed upstream of the separation pit 5, and the large volume of waste residue is intercepted at the front end.

[0030] Preferably, the distance between the slag-blocking net 2 and the oil-blocking baffle 6 is greater than or equal to 2 m and less than or equal to 5 m.

[0031] The slag blocking net 2 is a mesh structure, which can effectively intercept large particles of impurities at the front end. Preferably, the distance between the slag blocking net 2 and the oil blocking baffle 6 is 2m.

[0032] The mud well 4 can be arranged on the other side of the separation pit 5. Figure 1 As described above, the oil collecting well 3 and the mud collecting well 4 are respectively arranged on both sides of the separation pit 5; of course, they can also be arranged at other locations according to the existing environment.

[0033] In order to facilitate the control of the height of the oil overflow tank, an oil overflow baffle 7 is provided on the oil overflow tank.

[0034] When the depth of the oil wastewater ditch 1 is 1 m, preferably, the installation height of the oil spill baffle 7 is such that the height difference between the highest end surface of the oil spill baffle 7 and the bottom of the oil wastewater ditch 1 is 0.8 m.

[0035] The first mud discharge pipe 8 is preferably a gravity mud discharge pipe. A normally closed valve 9 is arranged on the first mud discharge pipe 8. The normally closed valve can be arranged in the mud accumulation well 4.

[0036] In order to facilitate timely discharge of waste oil in the oil collecting well 3 , an oil discharge pump 10 and an oil discharge pipe 11 connected to the oil discharge pump 10 are provided on the oil collecting well 3 .

[0037] In order to facilitate timely discharge of the sludge in the sludge well 4, a sludge discharge pump 12 and a second sludge discharge pipe 13 connected to the sludge discharge pump 12 are provided on the sludge well 4. The second sludge discharge pipe 13 is preferably a pressure sludge discharge pipe.

[0038] In order to effectively slow down the water flow, the distance between the bottom of the separation pit 5 and the bottom of the oily wastewater ditch 1 is greater than or equal to 0.2 m, that is, the water seal height depth is not less than 0.2 m.

[0039] The oil-blocking baffle 6 preferably adopts a reinforced concrete plate structure, and its bottom is flush with the bottom of the oily wastewater ditch 1 or slightly lower than the bottom of the oily wastewater ditch 1, and does not contact the bottom of the separation pit 5.

[0040] In order to facilitate effective separation of sludge, the bottom of the separation pit 5 is set as a slope, and the bottom of the separation pit 5 is sloped to the first sludge discharge pipe 8 at a slope of 0.005.

[0041] The bottom height of the mud accumulation well 4 is lower than the bottom height of the oil wastewater ditch 1 .

[0042] The length of the oil collecting well 3 is not less than 1.0m, the width is not less than 0.5m, and it meets the installation requirements of the oil discharge pump 10 and the oil discharge pipe 11; the length of the mud accumulation well 4 is not less than 1.0m, the width is not less than 0.5m, the bottom is not less than 0.2m lower than the oily wastewater ditch 1, and it meets the installation requirements of the first mud discharge pipe 8, mud discharge pump 12 and the second mud discharge pipe 13. The flow rate of the oil discharge pump 10 and the size of the oil discharge pipe 11 are determined according to the oil discharge volume of the oily wastewater designed by the project, and the head of the oil discharge pump 11 is determined according to the height difference and loss. The size of the gravity first mud discharge pipe 8 and the normally closed valve 9 is not less than DN200.

[0043] The flow rate and pressure of the mud pump 12 and the size of the second mud pipe 13 are determined according to the designed mud discharge volume of the project, and the lift of the mud pump 12 is determined according to the height difference and loss.

[0044] Based on any of the above structures and principles, in a specific implementation:

[0045] The depth of the oily wastewater ditch 1, i.e. the ditch height, is 1.0 m; the oil collecting well 3 is 1.0 m long and 0.5 m wide; the mud accumulation well 4 is 1.0 m long and 0.5 m wide, and its bottom is 0.2 m lower than the oily wastewater ditch 1.

[0046] The flow rate of the oil discharge pump 10 is 200m3 / h, the size of the oil discharge pipe 11 is DN100, and the head of the oil discharge pump 11 is 15m.

[0047] The flow rate of the mud pump 12 is 1L / s, the size of the second mud pipe 13 is DN50, and the lift of the mud pump 12 is 12m.

[0048] The sizes of the first mud discharge pipe 8 and the normally closed valve 9 are both DN200.

[0049] By adopting the above structure, the density of oil is smaller than that of water, and the oily wastewater in the oily wastewater ditch is effectively separated from the oily wastewater, the scale of subsequent oily wastewater treatment equipment is reduced, and the harm of oily wastewater to the environment is reduced.

[0050] The separation pit 5 can effectively intercept and remove the accumulated sludge in the oily wastewater ditch, thereby increasing the flow capacity of the oily wastewater ditch.

[0051] The above structure is simple and easy to arrange, and can be flexibly arranged at any position in the middle or at the end of the airport drainage ditch, and can be arranged at one or more positions.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil-water separation drainage ditch structure, comprising an oily wastewater ditch (1), characterized in that: The oily wastewater ditch (1) is provided with a separation pit (5) whose bottom is lower than the oily wastewater ditch (1). The separation pit (5) is provided with an oil-blocking baffle (6) which is not in contact with the bottom of the separation pit (5); The bottom of the separation pit (5) is connected to a first mud discharge pipe (8), and one end of the first mud discharge pipe (8) is connected to the mud accumulation well (4); An oil collecting well (3) is provided on one side of the separation pit (5), and an oil overflow trough is provided between the oil collecting well (3) and the oily wastewater ditch (1), wherein the height of the oil overflow trough is higher than the bottom of the oil blocking baffle (6).

2. The oil-water separation drainage ditch structure according to claim 1, characterized in that: The oily wastewater ditch (1) is provided with a slag blocking net (2), and the oil overflow tank is placed between the slag blocking net (2) and the oil blocking baffle (6).

3. The oil-water separation drainage ditch structure according to claim 2, characterized in that: The distance between the slag blocking net (2) and the oil blocking baffle (6) is greater than or equal to 2 m and less than or equal to 5 m.

4. The oil-water separation drainage ditch structure according to claim 1, characterized in that: The first mud discharge pipe (8) is provided with a normally closed valve (9).

5. The oil-water separation drainage ditch structure according to claim 1, characterized in that: The oil collecting well (3) is provided with an oil discharge pump (10) and an oil discharge pipe (11) connected to the oil discharge pump (10).

6. The oil-water separation drainage ditch structure according to claim 1, characterized in that: The mud accumulation well (4) is provided with a mud discharge pump (12) and a second mud discharge pipe (13) connected to the mud discharge pump (12).

7. The oil-water separation drainage ditch structure according to claim 1, characterized in that: An oil overflow baffle (7) is arranged on the oil overflow tank.

8. The oil-water separation drainage ditch structure according to claim 1, characterized in that: The distance between the bottom of the separation pit (5) and the bottom of the oily wastewater ditch (1) is greater than or equal to 0.2 m.

9. The oil-water separation drainage ditch structure according to claim 1, characterized in that: The bottom of the oil-blocking baffle (6) is flush with the bottom of the oily wastewater ditch (1).

10. The oil-water separation drainage ditch structure according to claim 1, characterized in that: The bottom height of the mud accumulation well (4) is lower than the bottom height of the oil wastewater ditch (1).

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