CN201873554U - Air stripping-type oil-water separation device - Google Patents

Abstract

The utility model discloses an air lift type oil-water separation device. Including air-lift oil-water separation device, oil-water mixture inlet, baffle, U-shaped pipe, floating cover, air pipe, oil slick, air bubbles, inclined plate, sewage valve, outlet weir, outlet pipe; air-lift oil-water There is a baffle with a gap with the bottom in the separation device, a sloping plate is set on the right side of the baffle, a sewage valve is installed at the left lower end of the sloping plate, a water outlet weir and a water outlet are installed at the upper right end of the sloping plate, and on the left side of the baffle There is a U-shaped tube, and a floating cover is installed at the entrance of one end of the U-shaped tube. The compressed air passes through the air tube into the lower part of the other side of the U-shaped tube, and the other end of the U-shaped tube is an outlet. Air lift type An oil-water mixture inlet is provided on the upper left side wall of the oil-water separation device. The utility model has simple structure, is not easy to break down, has less power consumption, can work continuously and automatically, and the separated waste water has almost no oil slick, which creates good conditions for subsequent treatment.

Description

A kind of air lifting type oil-water separation device

technical field

The utility model relates to the field of environmental protection, in particular to an air lift type oil-water separation device.

Background technique

With the development of the petrochemical industry, the discharge of oily wastewater is increasing day by day, and its pollution to the environment is also becoming more and more serious. After oily wastewater enters water bodies such as rivers, lakes, seas, etc., the oil layer covers the water surface, preventing the diffusion of oxygen in the air to the water. Due to the reduction of dissolved oxygen in the water body, the photosynthesis of algae is limited, which affects the normal growth of aquatic organisms, making aquatic animals and plants It has an oily or toxic smell, and even makes the water body smelly, destroying the utilization of water resources. Therefore, the treatment of oily wastewater is of great significance.

At present, there are many devices for treating oily wastewater on the market, but most of them have complex structures, difficult operation, high energy consumption, and unsatisfactory treatment effects.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an air-lift type oil-water separation device.

Air-lift oil-water separation device includes air-lift oil-water separation device, inlet of oil-water mixture, baffle, U-shaped pipe, floating cover, air pipe, floating oil, air bubbles, inclined plate, sewage valve, outlet weir, outlet pipe The air-lift oil-water separation device is equipped with a baffle plate with a gap with the bottom, a sloping plate is provided on the right side of the baffle plate, a drain valve is provided at the left lower end of the sloping plate, and a water outlet weir and a water outlet pipe are provided at the upper right end of the sloping plate. , there is a U-shaped tube on the left side of the baffle, a floating cover is set at the entrance of one end of the U-shaped tube, compressed air passes through the air tube into the lower part of the other side of the U-shaped tube, and the other end of the U-shaped tube For the outlet, an oil-water mixture inlet is provided on the upper left side wall of the air lift type oil-water separation device.

The utility model is simple in structure, not easy to break down, low in power consumption, basically maintenance-free, can work continuously and automatically, and can recover slick oil and heavy oil from waste water. After the waste water is treated by the device, there is almost no slick oil. good conditions.

Description of drawings

Fig. 1 is the cross-sectional view of air-lift type oil-water separation device schematic diagram;

Fig. 2 is the top view of air lift type oil-water separation device schematic diagram;

In the figure: air-lift oil-water separation device 1, oil-water mixture inlet 2, baffle plate 3, U-shaped pipe 4, floating cover plate 5, air pipe 6, floating oil 7, air bubble 8, inclined plate 9, sewage valve 10 , outlet weir 11, outlet pipe mouth 12.

Detailed ways

Further elaboration below in conjunction with accompanying drawing:

As shown in the figure, the air-lift oil-water separation device includes air-lift oil-water separation device 1, oil-water mixture inlet 2, baffle plate 3, U-shaped pipe 4, floating cover plate 5, air pipe 6, inclined plate 9, sewage discharge Valve 10, water outlet weir 11, water outlet pipe mouth 12; air lift type oil-water separation device 1 is provided with a baffle plate 3 with a gap with the bottom, the right side of the baffle plate 3 is provided with a sloping plate 9, and the left lower end of the sloping plate 9 is provided There is a sewage valve 10, the upper right end of the inclined plate 9 is provided with an outlet weir 11 and an outlet pipe port 12, and a U-shaped pipe 4 is arranged on the left side of the baffle plate, and a floating cover plate 5 is arranged at the entrance of one side of the U-shaped pipe. Air passes through the air pipe 6 into the lower part of the other side of the U-shaped tube, and the other end of the U-shaped tube is an outlet. An oil-water mixture inlet 2 is provided on the upper left side wall of the air lift type oil-water separation device 1 .

The working process of the present utility model is as follows:

After the utility model is implemented, the produced oil-water mixture is introduced into the oil slick separation area on the left side of the device. Under the conditions of our device, the light oil floats up and collects to the left side of the baffle, and the slick oil passes through the U under the drive of compressed air. The U-shaped tube and air bubbles are discharged from the outlet of the U-shaped tube; the heavy oil settles at the bottom of the device through the sloping plate and is discharged through the drain valve; the waste water that removes floating oil and heavy oil is separated from the outlet pipe of the clean liquid area. The utility model utilizes the difference in specific gravity between oil and water and the motion characteristics of the fluid, adopts the floating method on the air to separate the oil slick, and realizes the fast and effective separation and recovery of the slick oil in the waste water. In the device, a baffle plate that does not touch the bottom divides the device into two areas, the front section is the floating oil separation area, and the rear section is the clean liquid area. The upper part of the baffle is about 10cm above the liquid level, and the lower part of the baffle is about 20cm away from the bottom of the tank. The oil-water mixture enters from the upper part of the front section of the tank. In the floating oil separation area, the mixed liquid flows forward at a lower flow rate, and the floating oil floats up. The waste water enters the heavy oil separation area through the lower part of the baffle, and the heavy oil is deposited on the sloping plate. bottom of the unit and discharge through the bottom valve. Wastewater from removing slick oil and heavy oil flows out through the outlet weir in the clean liquid area. The waste water in the net liquid area is discharged through the overflow port on the upper part of the device. In the oil slick separation area, the oil and water are naturally separated by utilizing the different densities of oil and water, and the oil floats lightly. The compressed air is fed through the DN25 pipe, and the floating oil in the U-shaped pipe floats up together with the air bubbles, and is discharged from the system through the nozzle above the water surface; the distance above the water surface from the center of the left nozzle of the U-shaped pipe is about 1/3 of the distance between the U-shaped pipe and the water surface. After the oily wastewater from a chemical enterprise is treated by this device, the oil content in the wastewater drops from 621mg/L to 64mg/L, and the removal rate of oil content is 89.7%. The removal effect is obvious.

Claims (1)

1. An air-lift type oil-water separation device is characterized in that comprising an air-lift type oil-water separation device (1), an oil-water mixture inlet (2), a baffle plate (3), a U-shaped pipe (4), and a floating cover plate (5), air pipe (6), inclined plate (9), blowdown valve (10), outlet weir (11), outlet pipe mouth (12); The baffle plate (3) with gaps, the slant plate (9) is provided on the right side of the lower end of the baffle plate (3), the drain valve (10) is provided at the left lower end of the slant plate (9), and the water outlet is provided at the upper right end of the slant plate (9). The weir (11), the outlet pipe mouth (12), is provided with a U-shaped pipe (4) on the left side of the baffle plate, and a floating cover plate (5) is arranged at the entrance of one side of the U-shaped pipe (4), and the air pipe ( 6) It is connected to the lower part of the other side of the U-shaped tube (4), and the other end of the U-shaped tube is the outlet, and the upper side wall of the air-lift type oil-water separation device (1) is provided with an oil-water mixture inlet (2) .

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