Emergency accident pool integrated with oil separation function

Abstract

The utility model discloses an emergency accident pool integrated with an oil separation function, which comprises an emergency accident pool body, a water inlet pipe is arranged on the side wall of one side of the emergency accident pool body along the length direction, an emptying pipe is arranged on the side wall of the other side of the emergency accident pool body, and the emptying pipe is communicated with the outlet end of a delivery pump arranged in the emergency accident pool body; a flow guide wall is arranged in the emergency accident pool body in the width direction, the flow guide wall is arranged on one side close to the emptying pipe, and the emergency accident pool body is divided into a separation area and a lifting area by the flow guide wall; a rectification hole is formed in the lower part of the flow guide wall; the separation area is communicated with the lifting area through the rectification hole; the delivery pump is arranged in the lifting area, and the water inlet pipe is positioned on the side wall of the separation area. The emergency accident pool integrated with the oil separation function solves the technical problem that oil pollutants in accident water cannot be effectively separated in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of emergency facilities, and particularly relates to an emergency accident pool integrated with an oil separation function. BACKGROUND

[0002] As an important emergency facility, the emergency accident pool can quickly and effectively handle and dispose of leaked substances in emergency situations to prevent harm to the environment and human health. Therefore, enterprises or industrial parks with certain hazardous accident drainage are provided with emergency accident pools for temporarily storing wastewater, fire water, initial rainwater and the like in the event of an accident (fire and explosion accident, leakage accident).

[0003] At present, the commonly used emergency accident pool is a temporary storage pool set to prevent contaminated water in an accident state from entering municipal water pipelines or natural water bodies, mainly collects production wastewater, accident wastewater, fire wastewater, initial rainwater and the like that cannot be accommodated by the existing pollution collection system (cofferdams, dikes, fire dikes, buffer pools and the like) in the factory area and the accident influence range during the accident. The emergency accident pool has the characteristics of permanent setting, temporary storage, full-factory service, and the basic attributes of specificity, self-flowing type, underground type, large pool capacity, corrosion resistance and seepage resistance. When treating high-concentration wastewater discharged by some chemical and petrochemical plants, an emergency accident pool is generally set up. The reason is that when these plants have production accidents, a large amount of high-concentration and pH value fluctuating organic wastewater will be discharged in a short time. If these wastewaters directly enter the wastewater treatment system, they will bring a very high impact load to the running biological treatment system, which will take a long time to recover and sometimes will cause fatal damage. In order to avoid the impact of accident water on the wastewater treatment system, an emergency accident pool is set up to store accident water. The emergency accident pool is generally kept empty to ensure that it plays its due role in special time periods. However, the design of the emergency accident pool focuses on storage and flow guiding functions, and ignores the oil separation function. However, in many accident situations, the massive leakage of oil substances cannot be avoided. If the oil pollution is not effectively treated and directly discharged into the downstream wastewater treatment station, it will cause a series of problems such as equipment blockage and biological treatment efficiency reduction, which will bring safety hazards to the environment and the wastewater treatment station. SUMMARY

[0004] In view of the existing technical problems, the utility model aims to provide an emergency accident pool integrated with an oil separation function, which can solve the technical problem that oil pollutants in accident water cannot be effectively separated in the prior art.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0006] The utility model discloses an integrated emergency pool of oil separation function, including emergency pool body, the side wall of one side of emergency pool body along length direction is equipped with inlet pipe, and the side wall of the other side is equipped with emptying pipe, and the emptying pipe is linked together with the export of the delivery pump arranged in the emergency pool body, its structural characteristics are: the flow guide wall is equipped with in the emergency pool body along the width direction, and the flow guide wall sets up at one side close to the emptying pipe, and the flow guide wall divides the emergency pool body into separation area and promotion area, the lower part of flow guide wall is equipped with the rectifier hole, and separation area and promotion area are linked together through the rectifier hole, and the delivery pump sets up in promotion area, and the side wall of inlet pipe is located in separation area.

[0007] The utility model discloses an integrated emergency pool of oil separation function, including emergency pool body, the side wall of one side of emergency pool body along length direction is equipped with inlet pipe, and the side wall of the other side is equipped with emptying pipe, and the emptying pipe is linked together with the export of the delivery pump arranged in the emergency pool body, its structural characteristics are: the flow guide wall is equipped with in the emergency pool body along the width direction, and the flow guide wall sets up at one side close to the emptying pipe, and the flow guide wall divides the emergency pool body into separation area and promotion area, the lower part of flow guide wall is equipped with the rectifier hole, and separation area and promotion area are linked together through the rectifier hole, and the delivery pump sets up in promotion area, and the side wall of inlet pipe is located in separation area.

[0008] Preferably, the promotion area is provided with a baffle wall, the baffle wall is oppositely arranged with the flow guide wall, and the delivery pump is arranged between the baffle wall and the side wall provided with the emptying pipe. By arranging the baffle wall, the accident water needs to flow over the baffle wall to enter the inlet of the delivery pump, and the baffle wall can determine the pump stop level of the delivery pump.

[0009] Preferably, the top wall of the baffle wall is located above the rectifier hole, and the height of the baffle wall is at least 50 cm higher than the height of the top wall of the rectifier hole.

[0010] Preferably, the baffle wall and the flow guide wall are arranged in parallel and at intervals.

[0011] Specifically, the bottom of the separation area is provided with a slope-shaped bottom plate, and the flow guide wall is located on the slope bottom side of the slope-shaped bottom plate. By arranging the slope-shaped bottom plate, the heavy oil dirt and other pollutants are gathered on the slope bottom side of the slope-shaped bottom plate, which is convenient for collection and external discharge.

[0012] Specifically, the top of the separation area is provided with an inspection hole, and the inspection hole is located above the slope bottom side of the slope-shaped bottom plate. When the oil dirt in the separation area is cleaned, the inspection hole is opened, and the oil dirt is externally discharged by the oil suction pump.

[0013] Preferably, the distance between the rectifying hole and the bottom of the guide wall is 25-40cm. Since heavy oil and other impurities are deposited at the bottom of the separation zone, setting the rectifying hole at a certain height can prevent the impurities at the bottom from entering the lifting zone.

[0014] Preferably, the lower part of the guide wall is provided with a plurality of rectifying holes, and the plurality of rectifying holes are uniformly spaced along the length direction of the guide wall.

[0015] Preferably, a liquid level instrument is arranged in the lifting zone, and the liquid level instrument and the delivery pump are connected with the control system. Through the measurement of the liquid level height of the lifting zone by the liquid level instrument and the real-time monitoring of the control system, the opening or closing of the delivery pump is controlled, so that automatic control and remote operation are realized, and timely measures can be taken in case of an accident to reduce environmental pollution and property loss.

[0016] Specifically, one end of the emptying pipe penetrates through the side wall of the emergency accident pool body, the other end extends to the bottom of the lifting zone along the side wall of the emergency accident pool body and is connected with the delivery pump, and the emptying pipe and the side wall of the emergency accident pool body are fixedly connected through a plurality of supports.

[0017] Compared with the prior art, the integrated emergency accident pool with oil separation function has the following beneficial effects:

[0018] 1. The integrated emergency accident pool with oil separation function combines the characteristics of an oil separation tank and an emergency accident pool, adopts a physical separation principle, utilizes the density difference between oil droplets and water to make the oil stains naturally float to the water surface, realizes efficient oil-water separation, and thus effectively prevents oil pollutants from spreading to the external environment.

[0019] 2. The integrated emergency accident pool with oil separation function can cope with accident water with a large variation coefficient, effectively intercepts oil stains, thereby reducing the operation cost and difficulty of a downstream sewage treatment station and improving the treatment efficiency.

[0020] 3. The integrated emergency accident pool with oil separation function realizes automatic control and remote operation by introducing intelligent equipment, ensures that timely measures can be taken in case of an accident, and reduces environmental pollution and property loss. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the integrated emergency accident pool with oil separation function of the utility model;

[0022] Figure 2 is Figure 1 a structural schematic view of the guide wall.

[0023] in the drawings

[0024] 1 - inlet pipe, 2 - separation zone, 3 - sloping bottom plate, 4 - empty pool liquid level, 5 - flow guide wall, 6 - flow regulating hole, 7 - flow blocking wall, 8 - delivery pump, 9 - support, 10 - emptying pipe, 11 - lifting zone, 12 - liquid level meter, 13 - manhole, 14 - top cover plate, 15 - highest liquid level, 16 - emergency pool body. DETAILED DESCRIPTION

[0025] The utility model will be explained in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if "up", "down", "left" and "right" appear in the following text, they only mean the same direction as the up, down, left and right of the drawings, and do not limit the structure.

[0026] As shown in Figure 1 The utility model provides an emergency pool with integrated oil separation function, which comprises an emergency pool body 16. An inlet pipe 1 is arranged on the upper part of the right side wall of the emergency pool body 16 along the length direction, and an emptying pipe 10 is arranged on the upper part of the left side wall. The emptying pipe 10 is connected with the outlet end of a delivery pump 8 arranged in the emergency pool body 16. The delivery pump 8 is an emptying pump, the bottom of which is connected with a mounting seat arranged at the bottom of the emergency pool body 16 and can be lifted upward through a guide rail. The inlet pipe 1 is arranged at the highest liquid level 15 of the emergency pool body 16, and the emptying pipe 10 is arranged above the highest liquid level 15. A flow guide wall 5 is arranged in the emergency pool body 16 along the width direction, which is arranged on the side close to the emptying pipe 10 and divides the emergency pool body 16 into a separation zone 2 and a lifting zone 11. The separation zone 2 is arranged on the right side, and the lifting zone 11 is arranged on the left side. Figure 2As shown, the lower part of the flow guide wall 5 is provided with a plurality of flow regulating holes 6, which are uniformly spaced along the length direction of the flow guide wall 5, the spacing between the flow regulating hole 6 and the bottom of the flow guide wall 5 is 25-40 cm, and the separation zone 2 and the lifting zone 11 are connected through the flow regulating hole 6. The lifting zone 11 is provided with a flow blocking wall 7, which is arranged in parallel with the flow guide wall 5 at a spacing, and the conveying pump 8 is arranged between the flow blocking wall 7 and the left side wall. The flow blocking wall 7 and the flow guide wall 5 can be made of steel structure (Q235, SUS304, etc.), engineering plastic (PP, etc.), and glass steel. The top wall of the flow blocking wall 7 is located above the flow regulating hole 6, and the height of the flow blocking wall 7 is at least 50 cm higher than the height of the top wall of the flow regulating hole 6. The bottom of the separation zone 2 is provided with a sloping bottom plate 3, and the flow guide wall 5 is located on the slope bottom side of the sloping bottom plate 3. The top of the separation zone 2 is provided with an inspection hole 13, which is located above the slope bottom side of the sloping bottom plate 3, and the right side of the inspection hole 13 is provided with a top cover plate 14. The lifting zone 11 is provided with a liquid level instrument 12, and the liquid level instrument 12 and the conveying pump 8 are connected with the control system. One end of the emptying pipe 10 penetrates the side wall of the emergency accident pool body 16, the other end extends along the side wall of the emergency accident pool body 16 to the bottom of the lifting zone 11 and is connected with the conveying pump 8, and the emptying pipe 10 and the right side wall of the emergency accident pool body 16 are fixedly connected through a plurality of supports 9.

[0027] The embodiment also provides a method for separating oil pollutants by using the emergency accident pool integrated with oil separation function.

[0028] S1. The accident water enters the separation zone 2 through the water inlet pipe 1 and is buffered in the separation zone 2;

[0029] S2. The light oil pollutants in the accident water float above the liquid surface, the heavy oil pollutants precipitate to the bottom of the separation zone 2, and the accident water without oil pollutants enters the lifting zone 11 through the plurality of flow regulating holes 6;

[0030] S3. The conveying pump 8 is opened to discharge the accident water in the lifting zone 11;

[0031] S4. The oil pollutants in the separation zone 2 are discharged by the oil suction pump.

[0032] The emergency accident pool integrated with oil separation function is applied to a test pad of a large-scale mechanical production base to collect initial rainwater and accident water in a non-powered self-flowing manner, and the design effective volume is 600m 3The length of the emergency accident pool body 16 to be built is 18 m, the width is 11 m, the depth is 5.0 m, and the effective water depth is 3.1 m, which is the difference between the highest liquid level 15 in the emergency accident pool body 16 and the empty pool liquid level 4. The distance between the flow guide wall 5 and the left side wall of the emergency accident pool body 16 is 1.9 m, the height of the flow blocking wall 7 is 90 cm, the distance between the flow regulating hole 6 and the bottom of the flow guide wall 5 is 25 cm, and the distance between the flow regulating hole 6 and the empty pool liquid level 4 above is 0.5 m. The horizontal flow velocity of the oil-containing sewage in the emergency accident pool body 16 is generally 2-5 mm / s, and should not be greater than 15 mm / s. Initial rainwater: the rainfall in the initial 15-30 minutes, or the rainfall of 20-30 mm thickness in the initial rainfall. Emptying flow: 6.25-12.5 m 3 / h (emptying equivalent flow rate time is selected as 48-96 h). In order to ensure the smooth flow of the separation zone 2, the flow velocity in the flow regulating hole 6 should be 0.05-0.15 m / s.

[0033] The integrated oil separation function needs to calculate the following water cross section horizontal flow velocity and flow regulating hole, and the calculation process is as follows:

[0034] (1) Water cross section horizontal flow velocity calculation

[0035] In order to avoid the suspended oil droplets entering the lifting zone 11 with the water flow during the water intake process, the calculation is carried out according to the most unfavorable condition, that is, the minimum water cross section area when the pump is stopped and the liquid level is filled with water: 11 m x 0.5 m = 5.5 m 2 As the liquid level in the emergency accident pool body 16 rises, the water cross section will become larger, as shown in Figure 1 .

[0036] The cross section of the lifting zone 11 is 11 m x 1.9 m = 20.9 m 2 , and the liquid level of the lifting zone rises synchronously with the water inflow of the oil-water separation zone. According to the definition of initial rainwater, the maximum water cross section horizontal flow velocity is calculated as:

[0037] 20.9 m 2 x 3.1 m x 1000 ÷ 5.5 m 2 ÷ 15 min ÷ 60 = 13.09 mm / s < 15 mm / s

[0038] After calculation, the horizontal flow velocity of the water cross section of the oil-water separation zone of the emergency accident pool meets the process parameter selection requirements.

[0039] (2) Flow regulating hole calculation

[0040] To ensure the smooth flow in the separation zone, the fairing measures from the separation zone 2 to the lifting zone 11 adopt the combination of the flow guide wall 5 with the fairing hole 6 and the flow blocking wall 7. The flow guide wall 5 can guide and adjust the water flow through its specific structure design, so that the water flow can become more stable when passing through the flow guide wall 5. In the deep water flow, the setting of the flow guide wall 5 can significantly reduce the turbulence phenomenon of the water flow and improve the stability of the water flow. The flow blocking wall 7 is mainly used to block and adjust the flow direction and flow rate of the water flow. By reasonably setting the height, position and shape of the flow blocking wall 7, the distribution and flow state of the water flow can be effectively controlled, and the stability of the water flow in the separation zone can be further ensured.

[0041] After the emergency accident pool receives sewage, it needs to be emptied in 2-4 days. According to the design scale of the downstream sewage station and other cost factors, it is calculated according to 4 days of emptying, and the emptying flow is 6.25m 3 / s; at the same time, the average water flow velocity of the fairing hole 6 of the flow guide wall 5 when the emergency accident pool is filled with water is:

[0042] 20.9m 2 ×3.1m×1000÷15min÷60=72L / s

[0043] The water flow through the fairing hole 6 of the flow guide wall 5 when filling water is much larger than the flow when emptying, so the fairing hole 6 is designed according to the flow when filling water. The flow rate of the fairing hole 6 is 0.15m / s, and the diameter of a single fairing hole 6 is DN200mm. The number of fairing holes 6 on the flow guide wall 5 of the emergency accident pool is calculated as follows:

[0044] 72L / s÷1000÷0.15m / s÷(0.2 2 m 2 ×π÷4)=15.3

[0045] Rounding up, the number of DN200mm fairing holes 6 on the flow guide wall 5 needs to be designed as 16, and the center distance between the holes is:

[0046] 11000mm÷(16+1)=647mm, rounding up to 650mm.

[0047] (3) Water quality before and after implementation

[0048] After the implementation of the project, the "oil" index of the inlet and outlet water is monitored, and the monitoring data is shown in the following table. The technology can effectively isolate the suspended oil droplets from being discharged into the subsequent treatment process.

[0049]

[0050] The above-mentioned embodiments should be understood as being only for more clearly illustrating the utility model, and not for limiting the scope of the utility model, and after reading the utility model, various equivalent modifications of the embodiments made by those skilled in the art all fall within the scope defined by the claims of the utility model.

Claims

1. An integrated emergency pool with oil separation function, comprising an emergency pool body (16), a water inlet pipe (1) is arranged on one side wall of the emergency pool body (16) along the length direction, a discharge pipe (10) is arranged on the other side wall, and the discharge pipe (10) is communicated with the outlet end of a delivery pump (8) arranged in the emergency pool body (16); characterized in that: The emergency pool body (16) is provided with a flow guide wall (5) in the width direction, which is arranged on the side close to the emptying pipe (10), and the flow guide wall (5) divides the emergency pool body (16) into a separation area (2) and a lifting area (11); the lower part of the flow guide wall (5) is provided with a flow regulating hole (6), and the separation area (2) and the lifting area (11) are connected through the flow regulating hole (6); the delivery pump (8) is arranged in the lifting area (11), and the water inlet pipe (1) is arranged on the side wall of the separation area (2).

2. The integrated oil separation function emergency spill basin of claim 1, wherein: The lifting area (11) is provided with a flow blocking wall (7), which is arranged opposite to the flow guide wall (5), and the delivery pump (8) is arranged between the flow blocking wall (7) and the side wall provided with the emptying pipe (10).

3. The integrated oil separation function emergency spill basin of claim 2, wherein: The top wall of the flow blocking wall (7) is located above the flow regulating hole (6), and the height of the flow blocking wall (7) is at least 50cm higher than the height of the top wall of the flow regulating hole (6).

4. The integrated oil separation function emergency spill basin of claim 2, wherein: The flow blocking wall (7) is arranged in parallel and spaced apart from the flow guide wall (5).

5. The integrated oil separation function emergency spill basin of claim 1, wherein: The bottom of the separation area (2) is provided with a slope bottom plate (3), and the flow guide wall (5) is located on the slope bottom side of the slope bottom plate (3).

6. The integrated oil separation function emergency spill basin of claim 5, wherein: The top of the separation area (2) is provided with an inspection hole (13), which is located above the slope bottom side of the slope bottom plate (3).

7. The integrated oil separation function emergency spill basin of claim 1, wherein: The distance between the flow regulating hole (6) and the bottom of the flow guide wall (5) is 25-40cm.

8. The integrated oil separation function emergency incident basin according to claim 7, characterized in that: The lower part of the flow guide wall (5) is provided with a plurality of flow regulating holes (6), and the plurality of flow regulating holes (6) are uniformly and spacedly arranged along the length direction of the flow guide wall (5).

9. The integrated oil intercepting emergency lagoon according to any one of claims 1 to 8, characterized in that: The lifting area (11) is provided with a liquid level instrument (12), and the liquid level instrument (12) and the delivery pump (8) are connected with the control system.

10. The integrated oil intercepting emergency lagoon according to any one of claims 1 to 8, characterized in that: One end of the emptying pipe (10) penetrates through the side wall of the emergency pool body (16), the other end extends along the side wall of the emergency pool body (16) to the bottom of the lifting area (11) and is connected with the delivery pump (8), and the emptying pipe (10) and the side wall of the emergency pool body (16) are fixedly connected through a plurality of supports (9).

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