Waste water treatment device for water ring vacuum pump

Abstract

This invention provides a wastewater treatment device for a water ring vacuum pump, including a wastewater tank, an oil separator, an aeration tank, and a heat exchange assembly. The wastewater tank collects and stores wastewater. The oil separator is connected to the wastewater tank and separates paraffin oil from the wastewater. The aeration tank is connected to the oil separator and separates halogenated hydrocarbons from the wastewater. The heat exchange assembly connects the aeration tank and the water ring vacuum pump, cooling the wastewater to a preset temperature and then delivering it to the water ring vacuum pump. The wastewater generated by the water ring vacuum pump is collected and stored in the wastewater tank. The wastewater flows out of the wastewater tank to the oil separator, separating the paraffin oil from the wastewater. Then, the wastewater enters the aeration tank for aeration, separating the halogenated hydrocarbons from the wastewater. Finally, the wastewater passes through the heat exchange assembly for heat exchange, raising the wastewater temperature to the preset temperature required for the water ring vacuum pump to operate, thus treating the wastewater and reducing the power consumption of the water ring vacuum pump to maintain the required vacuum level.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, and more specifically, to a wastewater treatment device for a water ring vacuum pump. Background Technology

[0002] Water ring vacuum pumps have certain requirements for the operating environment. During operation, they draw in volatile materials from the equipment, resulting in the wastewater discharged from the pump carrying these volatile materials. Additionally, water ring vacuum pumps require a large amount of clean water to maintain the water seal, leading to significant water consumption.

[0003] Water ring vacuum pumps consume a significant amount of clean water during operation, and the used water is treated as wastewater. Many projects do not consider water conservation in their design. A common industry practice is to store the clean water discharged from the water ring vacuum pump using storage devices such as tanks or pools, and then recycle it using a self-priming pump. Recycling wastewater directly without treatment will cause changes in the vacuum level of the water ring vacuum pump, increasing power consumption.

[0004] Taking a water ring vacuum pump unit in a factory as an example, the unit uses demineralized water as the water seal water for the water ring, which generates wastewater containing paraffin oil and halogenated hydrocarbons. When the wastewater is directly recycled without treatment, it will cause changes in the vacuum level of the water ring vacuum pump and increase power consumption. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The technical problem this invention aims to solve is that when wastewater is directly recycled without treatment, the vacuum level of the water ring vacuum pump changes, increasing power consumption.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] This utility model provides a wastewater treatment device for a water ring vacuum pump, including a wastewater tank, an oil separator, an aeration tank, and a heat exchange assembly; the wastewater tank is used to collect and store wastewater; the oil separator is connected to the wastewater tank and is used to separate paraffin oil from the wastewater; the aeration tank is connected to the oil separator and is used to separate halogenated hydrocarbons from the wastewater; the heat exchange assembly is connected to the aeration tank and the water ring vacuum pump and is used to cool the wastewater to a preset temperature and deliver it to the water ring vacuum pump.

[0010] Preferably, the oil separator includes an oil separator tank body, an oil-absorbing cotton felt is provided inside the oil separator tank body, and an S-shaped channel for wastewater to pass through is formed inside the oil separator tank body by multiple partitions.

[0011] Preferably, one end of the S-shaped channel is connected to the wastewater tank, and the other end of the S-shaped channel is connected to the aeration tank.

[0012] Preferably, the oil separator further includes a stainless steel wire mesh, which is fixedly connected to the inner wall of the oil separator, and the oil-absorbing cotton felt is placed on the stainless steel wire mesh.

[0013] Preferably, the aeration tank includes an aeration tank body, and a vertical baffle is provided inside the aeration tank body, which divides the aeration tank body into an aeration zone and a water storage zone. The upper part of the aeration zone is connected to the upper part of the water storage zone. An aeration pipe and a blower are provided in the aeration zone. The aeration pipe is connected to a steam source, and the blower is connected to a blower. The aeration zone is connected to a gas phase recovery device. A water outlet is provided at the bottom of the water storage zone, and the water outlet is connected to the heat exchange component.

[0014] Preferably, an overflow outlet is provided above the water storage area, and the overflow outlet is connected to the wastewater tank through a pipe.

[0015] Preferably, the spatial installation position of the oil separator is higher than that of the aeration tank, and the spatial installation position of the aeration tank is higher than that of the water ring vacuum pump.

[0016] Preferably, the system further includes a gas-liquid separator, the inlet end of which is connected to the water ring vacuum pump, the gas phase outlet end of which is connected to the gas phase recovery device, and the liquid phase outlet end of which is connected to the wastewater tank.

[0017] Preferably, it also includes a vacuum buffer tank, which is connected to the water ring vacuum pump.

[0018] Preferably, the heat exchange component is a water cooler, which includes a heat exchanger body, a cooling water circulation pipe, and a heat exchange pipe. The heat exchanger body is adjacent to the cooling water circulation pipe and the heat exchange pipe. Cooling water flows into the cooling water circulation pipe. The inlet of the heat exchange pipe is connected to the aeration tank, and the outlet of the heat exchange pipe is connected to the water ring vacuum pump.

[0019] (III) Beneficial Effects

[0020] The above-mentioned technical solution of this utility model has at least the following advantages:

[0021] In this invention, wastewater generated by the water ring vacuum pump is collected and stored in a wastewater tank. The wastewater flows out of the tank to an oil separator, where paraffin oil is separated from the wastewater. Then, the wastewater enters an aeration tank for aeration, where halogenated hydrocarbons are separated from the wastewater. Finally, heat is exchanged through a heat exchange component, raising the wastewater temperature to the preset temperature required for the water ring vacuum pump to operate, thus achieving wastewater treatment. Because the treated wastewater contains little or no halogenated hydrocarbons and paraffin oil, these components do not volatilize and affect the vacuum level of the water ring vacuum pump before entering it, thereby reducing the power consumption required to maintain the required vacuum level. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the wastewater treatment device for a water ring vacuum pump provided in this embodiment of the utility model.

[0024] Figure 2 This is a schematic diagram of the oil separator provided in an embodiment of the present invention.

[0025] The labels for the attached figures are as follows:

[0026] 10. Water ring vacuum pump; 20. Gas phase recovery device; 30. Gas-liquid separator; 40. Vacuum buffer tank; 301. Inlet end; 302. Gas phase outlet end; 303. Liquid phase outlet end; 40. Vacuum buffer tank; 1. Wastewater tank; 2. Oil separator; 3. Aeration tank; 4. Heat exchange assembly; 21. Oil separator tank body; 22. Oil-absorbing cotton felt; 23. Baffle; 24. S-shaped channel; 25. Stainless steel wire mesh; 31. Aeration tank body; 32. Vertical baffle; 33. Aeration zone; 34. Water storage zone; 35. Steam source; 36. Blower; 331. Aeration pipe; 332. Air blower head; 341. Water outlet; 342. Overflow port; 41. Heat exchanger body; 42. Cooling water circulation pipe; 43. Heat exchange pipe. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0031] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a wastewater treatment device for a water ring vacuum pump, including a wastewater tank 1, an oil separator 2, an aeration tank 3, and a heat exchange assembly 4; the wastewater tank 1 is used to collect and store wastewater; the oil separator 2 is connected to the wastewater tank 1 and is used to separate paraffin oil from the wastewater; the aeration tank 3 is connected to the oil separator 2 and is used to separate halogenated hydrocarbons from the wastewater; the heat exchange assembly 4 is connected to the aeration tank 3 and the water ring vacuum pump 10 and is used to cool the wastewater to a preset temperature and transport it to the water ring vacuum pump 10.

[0032] In one optional embodiment of this invention, the oil separator 2 includes an oil separator body 21, within which an oil-absorbing cotton felt 22 is disposed. Multiple baffles 23 are spaced within the oil separator body 21 to form S-shaped channels 24 for wastewater to pass through. Specifically, the baffles 23 are preferably made of stainless steel. By forming the S-shaped channels 24, the wastewater within the oil separator body 21 can fully contact the oil-absorbing cotton felt 22, thereby maximizing the removal of paraffin oil.

[0033] In one optional implementation of this embodiment, one end of the S-shaped channel 24 is connected to the wastewater tank 1, and the other end of the S-shaped channel 24 is connected to the aeration tank 3. Wastewater flowing out of the wastewater tank flows into the oil separator 2 from the inlet 26, flows along the S-shaped channel 24, and finally flows out from the outlet 27.

[0034] In one optional embodiment of this invention, the oil separator 2 further includes a stainless steel wire mesh 25, which is fixedly connected to the inner wall of the oil separator 21. Oil-absorbing cotton felt 22 is placed on the stainless steel wire mesh 25. The stainless steel wire mesh 25 is used to place and fix the oil-absorbing cotton felt 22.

[0035] As one of the optional embodiments of this example, the aeration tank 3 includes an aeration tank body 31. A vertical baffle 32 is provided inside the aeration tank body 31, which divides the aeration tank body 31 into an aeration zone 33 and a water storage zone 34. The upper part of the aeration zone 33 is connected to the upper part of the water storage zone 34. An aeration pipe 331 and a blower head 332 are provided inside the aeration zone 33. The aeration pipe 331 is connected to a steam source 35, and the blower head 332 is connected to a blower 36. The aeration zone 33 is connected to a gas phase recovery device 20. A water outlet 341 is provided at the bottom of the water storage zone 34, and the water outlet 341 is connected to a heat exchange component 4.

[0036] As one optional implementation of this embodiment, an overflow port 342 is provided above the water storage area 34, and the overflow port 342 is connected to the wastewater tank 1 through a pipe. The wastewater located above the water storage area 34 may still contain residual halogenated hydrocarbons, which flow out from the overflow port 342 and enter the wastewater tank 1 for recirculation.

[0037] In one optional implementation of this embodiment, the oil separator 2 is installed at a higher spatial position than the aeration tank 3, and the aeration tank 3 is installed at a higher spatial position than the water ring vacuum pump 10. This difference in spatial installation position allows wastewater to automatically flow from the oil separator 2 into the aeration tank 3 under its own gravity, and then automatically flow from the aeration tank 3 into the water ring vacuum pump 10, thus saving on pump usage.

[0038] As one optional implementation of this embodiment, a gas-liquid separator 30 is further included. The inlet end 301 of the gas-liquid separator 30 is connected to the water ring vacuum pump 10, the gas phase outlet end 302 of the gas-liquid separator 30 is connected to the gas phase recovery device 20, and the liquid phase outlet end 303 of the gas-liquid separator 30 is connected to the wastewater tank 1. The gas-liquid separator 30 is used to directly separate the gas and liquid phases of the wastewater generated by the water ring vacuum pump 10, so that the halogenated hydrocarbons in the wastewater enter the gas phase recovery device 20 from the gas phase outlet end 302, and the remaining liquid phase of the wastewater enters the wastewater tank 1 from the liquid phase outlet end 303.

[0039] As one optional implementation of this embodiment, a vacuum buffer tank 40 is also included, which is connected to the water ring vacuum pump 10. The vacuum buffer tank 40 is used to maintain the stability of the vacuum level inside the water ring vacuum pump 10.

[0040] As one of the optional implementations of this embodiment, the heat exchange component 4 is a water cooler. The water cooler includes a heat exchanger body 41, a cooling water circulation pipe 42, and a heat exchange pipe 43. The heat exchanger body 41 is adjacent to the cooling water circulation pipe 42 and the heat exchange pipe 43. Cooling water flows into the cooling water circulation pipe 42. The inlet of the heat exchange pipe 43 is connected to the aeration tank 3, and the outlet of the heat exchange pipe 43 is connected to the water ring vacuum pump 10.

[0041] Specifically, please combine Figure 1 and Figure 2 The working principle of the embodiment shown is as follows:

[0042] Wastewater generated by the water ring vacuum pump 10 is collected and stored in wastewater tank 1. Then, the wastewater flows from inlet 26 into oil separator 2 and along S-shaped channel 24, finally exiting from outlet 27. During the flow, the wastewater continuously contacts oil-absorbing cotton felt 22, which absorbs the paraffin oil in the wastewater, thus separating it from the wastewater. The wastewater then flows from outlet 27 into aeration tank 3. In aeration zone 33, steam generated by steam source 35 is discharged from aeration pipe 331, producing bubbles for aeration. Simultaneously, blower 36 operates, causing air to be discharged from blower head 332, producing bubbles for aeration. Dissolved halogenated hydrocarbons in the water are removed during aeration and enter the gas phase recovery device 20 with the airflow, achieving the recovery and utilization of halogenated hydrocarbons. Wastewater flows from aeration zone 33 to storage zone 34. The wastewater in the upper part of storage zone 34 may still contain residual halogenated hydrocarbons, which flow out from overflow port 342 and recirculate into wastewater tank 1. A water outlet 341 is located at the bottom of storage zone 34. Wastewater from which halogenated hydrocarbons have been separated flows from outlet 341 into heat exchange component 4. In heat exchange component 4, the wastewater, whose temperature rises due to the introduction of steam, exchanges heat with the cooling water circulating in cooling water circulation pipe 42 to bring the wastewater temperature up to the operating requirements of water ring vacuum pump 10. Finally, the wastewater reaching the preset temperature merges with the demineralized water supplied by demineralized water source 50 and flows into water ring vacuum pump 10.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater treatment device for a water ring vacuum pump, characterized by, include: Wastewater tanks are used to collect and store wastewater. An oil separator, connected to the wastewater tank, is used to separate paraffin oil from the wastewater; An aeration tank, connected to the oil separator, is used to separate halogenated hydrocarbons from the wastewater; A heat exchange assembly, connecting the aeration tank and the water ring vacuum pump, is used to cool the wastewater to a preset temperature and deliver it to the water ring vacuum pump.

2. The wastewater treatment device for a water ring vacuum pump as described in claim 1, characterized in that, The oil separator includes an oil separator tank body, and oil-absorbing cotton felt is provided inside the oil separator tank body. Multiple baffles are used to form an S-shaped channel for wastewater to pass through the oil separator tank body.

3. The wastewater treatment device for a water ring vacuum pump according to claim 2, characterized by One end of the S-shaped channel is connected to the wastewater tank, and the other end of the S-shaped channel is connected to the aeration tank.

4. The wastewater treatment device for a water ring vacuum pump according to claim 2, characterized by The oil separator also includes a stainless steel wire mesh, which is fixedly connected to the inner wall of the oil separator, and the oil-absorbing cotton felt is placed on the stainless steel wire mesh.

5. The wastewater treatment device for a water ring vacuum pump according to claim 1, characterized in that, The aeration tank includes an aeration tank body, and a vertical baffle is provided inside the aeration tank body, which divides the aeration tank body into an aeration zone and a water storage zone. The upper part of the aeration zone is connected to the upper part of the water storage zone. The aeration zone is provided with an aeration pipe and a blower head. The aeration pipe is connected to a steam source, and the blower head is connected to a blower. The aeration zone is connected to a gas phase recovery device. The bottom of the water storage zone is provided with a water outlet, which is connected to the heat exchange component.

6. The wastewater treatment device for a water ring vacuum pump according to claim 5, characterized in that, An overflow outlet is provided above the water storage area, and the overflow outlet is connected to the wastewater tank through a pipe.

7. The wastewater treatment device for a water ring vacuum pump as described in claim 1, characterized in that, The oil separator is installed at a higher spatial position than the aeration tank, and the aeration tank is installed at a higher spatial position than the water ring vacuum pump.

8. The wastewater treatment device for a water ring vacuum pump according to claim 1, characterized by It also includes a gas-liquid separator, the inlet end of which is connected to the water ring vacuum pump, the gas phase outlet end of which is connected to the gas phase recovery device, and the liquid phase outlet end of which is connected to the wastewater tank.

9. The wastewater treatment device for a water ring vacuum pump according to claim 1, characterized by It also includes a vacuum buffer tank, which is connected to the water ring vacuum pump.

10. The wastewater treatment device for a water ring vacuum pump according to claim 1, characterized in that, The heat exchange component is a water cooler, which includes a heat exchanger body, a cooling water circulation pipe, and a heat exchange pipe. The cooling water circulation pipe and the heat exchange pipe are arranged adjacent to the heat exchanger body. Cooling water flows into the cooling water circulation pipe. The inlet of the heat exchange pipe is connected to the aeration tank, and the outlet of the heat exchange pipe is connected to the water ring vacuum pump.

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