CN102730859A - Novel integrated oil-water separation device - Google Patents

Abstract

A new type of integrated oil-water separation device, including two concentric inner and outer cylinders, the inner cylinder constitutes a centrifugal separation zone (2) and an adsorption separation zone (8) from top to bottom, and the inner and outer cylinders form an annular gap The gravity sedimentation separation area (5); the gravity sedimentation separation area (5) has a partition, the upper part of one side of the partition has an oil-water mixture inlet (4), and the other side has a water outlet into the centrifugal separation area (2); The separation zone (2) has an oil discharge port (12), and the bottom of the adsorption zone (8) has a drain port (15). The invention couples the principles of gravity, centrifugation and adsorption separation, and has the advantages of high oil-water separation efficiency, easy processing and simple operation.

Description

Integrated new oil-water separation device

technical field

The invention relates to a device for treating oily waste water, in particular to a novel integrated oil-water separation device.

Background technique

According to the state of oil substances in water, they can be divided into floatable oil, dispersed oil, emulsified oil and dissolved oil. The current oil-water separation methods mainly include gravity separation, centrifugal separation and air flotation separation. Both gravity and centrifugal separation use the difference in density between oil and water to separate oil and water under the action of gravity and centrifugal force. The most commonly used equipment for gravity separation is the grease trap. The oily wastewater flows in from one end of the pool and flows through the pool body at a relatively small flow rate. During the flow, the oil particles with a density less than water rise to the water surface, and the water flows from the pool The other end flows out, and the oil-water separation effect of the grease trap is poor. Generally, it can only directly remove the slick oil and dispersible oil with large particle size. The emulsified oil cannot be directly removed by static sedimentation. It needs to be broken first to convert it into slick oil. to remove. Dissolved oil is in a dissolved state in water and cannot be removed by a grease trap, and it occupies a large area; the centrifugal separation technology mainly uses a centrifuge, and under the centrifugal action of high-speed rotation, the oil and water in the oily wastewater produce different centrifugal forces, so Oil separates from water. Since centrifugal equipment has moving parts, daily maintenance is difficult and operating costs are high; air flotation separation is a method of relying on the formation of tiny bubbles in water, carrying oily flocs to the liquid surface to purify water. This method has a good degreasing effect, can remove animal oil and mineral oil, and can also remove emulsified oil after demulsification by the agent. And it can reduce the concentration of pollutants such as SS and BOD ₅ in water while removing oil. The disadvantage is that the operation cost is high, and it needs to consume a lot of energy and chemicals; the equipment price is relatively expensive, the equipment structure is complicated, and it is equipped with devices such as pressurization and drug delivery.

Contents of the invention

The purpose of the present invention is to provide a novel integrated oil-water separation device with simple operation, easy processing and high separation efficiency.

The new integrated oil-water separation device provided by the present invention includes two concentric inner and outer cylinders, the inner cylinder constitutes a centrifugal separation zone and an adsorption separation zone from top to bottom, and the inner and outer cylinders form an annulus gravity sedimentation separation zone There is a partition in the gravity sedimentation separation area, the upper part of one side of the partition has an oil-water mixture inlet, and the other side has a water outlet into the centrifugal separation area; the centrifugal separation area has an oil discharge port, and the bottom of the adsorption area has a drainage port.

In the present invention, the centrifugal separation zone is composed of a rotor part and a stator part with uniformly distributed balls fixed horizontally on the inner wall of the inner cylinder, wherein the rotor part consists of a rotating shaft, three truncated circular parts and a circle that can rotate with the stator part. The upper end of the rotating shaft is connected to the speed-regulating motor, and the area where the lower end is connected to the three circular truncated parts is a cylindrical structure. Cooperating with the rotating ring, the angles between the conical surfaces of the three frustum-shaped parts and the horizontal plane gradually decrease from top to bottom, but they are all between 30 ^° -70 ^° .

In addition, the inner wall of the cylindrical structure at the lower end of the rotating shaft of the rotor component has a first oil hole with a hole rate of 30-60%. The porosity is 25-75%. The cylindrical structure at the lower end of the rotating shaft is provided with an oil overflow pipe connected to the oil discharge port.

The cylinder in the adsorption separation area is filled with polyester or polyether adsorption filler, and a water distribution plate is installed on the upper end.

The invention couples the principles of gravity, centrifugation and adsorption separation, has the characteristics of high oil-water separation efficiency, easy processing, simple operation, etc., is easy to popularize and apply, and has excellent application prospects.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is a top view of FIG. 1 .

Detailed ways

Referring to Fig. 1 and Fig. 2, the new integrated oil-water separation device provided by the present invention comprises two concentric inner and outer cylinders, the inner cylinder constitutes a centrifugal separation zone 2 and an adsorption separation zone 8 from top to bottom, and the inner and outer cylinders The cylinder constitutes the annulus gravity sedimentation separation zone 5; the gravity sedimentation separation zone 5 has a partition 17, the upper part of the partition 17 has an oil-water mixture inlet 4, and the other side has a water outlet 16 entering the centrifugal separation zone 2; The separation zone 2 has an oil discharge port 12 connected through an oil overflow pipe 13, and the bottom of the adsorption zone 8 has a drain port 15.

The centrifugal separation zone 2 is composed of a rotor part 1 and a stator part 6 with uniformly distributed balls fixed horizontally on the inner wall of the inner cylinder, wherein the rotor part 1 consists of a rotating shaft, three cone-shaped parts 3 and a rotating shaft that can cooperate with the stator part 6. Composed of ring 11, the upper end of the rotating shaft is connected with the speed-regulating motor, and the area where the lower end is connected with the three truncated truncated parts 3 is a cylindrical structure. As for the circular ring 11 that rotates with the stator part, the angles between the conical surfaces of the three frustum-shaped parts and the horizontal plane gradually decrease from top to bottom, but they are all between 30 ^° -70 ^° .

The inner wall of the cylindrical structure at the lower end of the rotating shaft of the rotor part is provided with a first oil passage 9 with an opening ratio of 30-60%. The porosity is 25-75%, and the cylindrical structure at the lower end of the rotating shaft is provided with an oil overflow pipe 13 connected with the oil discharge port 12.

The cylinder of the adsorption separation zone 8 is filled with polyester or polyether adsorption packing 7 , and a water distribution plate 14 is arranged at the upper end thereof.

When in use, the oily wastewater or oil-water mixture enters the gravity sedimentation separation zone 5 after adjusting the pH value or undergoes demulsification and flocculation treatment, then flows through the annular gap for a week and then enters the centrifugal separation zone 2, where the oil is collected The water is discharged from the oil discharge port 12, and the water flows through the adsorption zone 8, and then is discharged from the bottom drain port 15.

Claims (4)

1. an integrated novel oily-water seperating equipment is characterized in that, comprises two concentric inside and outside cylinders, and inner cylinder constitutes centrifugal separating area (2) and adsorptive separation zone (8) from top to bottom, and inside and outside cylinder constitutes annular space gravity settling separation district (5); There is dividing plate (17) in gravity settling separation district (5), and profit miscellany import (4) is arranged at the top of dividing plate (17) one sides, and opposite side has the mouth of a river (16) excessively of entering centrifugal separating area (2); Centrifugal separating area (2) has oil discharge outlet (12), and water port (15) is arranged at adsorption zone (8) bottom.

2. a kind of integrated novel oily-water seperating equipment according to claim 1; Be characterised in that; Centrifugal separating area (2) is made up of the stator component (6) that rotor part (1) and horizontal fixed are uniformly distributed with ball having of inner cylinder inwall; Wherein rotor part (1) links to each other with buncher on the rotating shaft by rotating shaft, three circular platform type parts (3) and can cooperate the annulus (11) that rotates to form with stator component, and the zone that the lower end links to each other with three circular platform type parts (3) is a cylinder type; The upper base of three circular platform type parts is connected in the lower end of rotating shaft; It is gone to the bottom to be connected in and can cooperate the annulus (11) that rotates with stator component, and the conical surface and the horizontal plane angle of three circular platform type parts reduce from top to bottom gradually, but all 30 ^o-70 ^oBetween.

3. a kind of integrated novel oily-water seperating equipment according to claim 2; It is characterized in that; Have first oil-through hole (9) on the cylinder type inwall of the rotating shaft lower end of rotor part, percentage of open area 30-60% is respectively equipped with second oil-through hole (10) on the conical surface of the parts of three circular platform types; Percentage of open area 25-75% is provided with oil spill pipe (13) and links to each other with oil discharge outlet (12) in the cylinder type of rotating shaft lower end.

4. a kind of integrated novel oily-water seperating equipment according to claim 1 is characterized in that, fills polyester or polyethers adsorption stuffing (7) in the cylinder of adsorptive separation zone (8), and its upper end is provided with water distribution board (14).

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