CN101851034B - Small automatic multi-stage oil-containing waste water treating device - Google Patents

Abstract

The invention relates to an oil separation device for treating small-scale oily wastewater; a small automatic multi-stage oily wastewater treatment device, which consists of a water inlet pipe, a fine screen, a particle removal area, a gravity oil removal area, an oil collection pipe, an adsorption area, and a PLC water level automatic Control device, greaseproof felt drawer, activated carbon column and drain pipe; there is a water inlet pipe at the top of the particle removal area, and a fine screen is installed between the particle removal area and the water inlet pipe, and the fine screen is slightly higher than the water level; the particle removal area It is connected with the gravity degreasing area; the oil collecting pipe and PLC water level automatic control device are set at the upper end of the gravity degreasing area, and the oil collecting pipe is equal to or slightly higher than the upper water level; the gravity degreasing area is connected with the adsorption treatment area through a gate, and the gate is set at the gravity The bottom of the degreasing area; the adsorption treatment area is composed of a greaseproof felt drawer and an activated carbon column. From low to top, it is a greaseproof felt drawer and activated carbon. At the lower water level; the drain pipe is at the bottom of the adsorption area. The device realizes effective removal of oil in oily wastewater. Treated water can enter the drainage network or be discharged directly.

Description

A small automatic multi-stage treatment device for oily wastewater

Technical field

The invention relates to an oil separation device for treating small-scale oily wastewater, especially for treating oily wastewater in the catering industry. Effectively improving the existing degreasing device, it is an integrated automatic multi-stage treatment device for oily wastewater in the catering industry.

Background technique

At present, in my country's oily wastewater treatment process, one is the advection type grease trap, which uses the density difference between oil and water to make the oil float up to treat oily wastewater. However, the device occupies too large an area. Moreover, the main removal is the floating oil in the oily wastewater, and the treatment effect on other oils is not good. When the influent oil concentration is high, it is difficult to meet the discharge requirements. The other is the oil-absorbing felt. This device utilizes the strong oil-absorbing effect of the felt to remove oil in water. However, it can only be limited to the treatment of waste water with a small oil content in the water. It is not ideal for the high oil content of the catering industry. And the replacement of the linoleum is more troublesome.

Contents of the invention

to solve its technical problems

In order to overcome the disadvantage that the existing oil removal device can only remove the floating oil in the oily wastewater, and the treatment effect on other oils is not good, the present invention provides a kind of oil removal device, which can not only effectively remove the floating oil, but also can It can carry out deep oil removal, and it can also effectively intercept larger suspended solid particles in the incoming water.

Technical solutions

A small automatic multi-stage treatment device for oily wastewater, consisting of a water inlet pipe, a fine screen, a particle removal area, a gravity oil removal area, an oil collection pipe, an adsorption area, a PLC water level automatic control device and a drain pipe; the top of the particle removal area is equipped with There is a fine screen between the particle removal area and the water inlet pipe, and the fine screen is slightly higher than the lower water level; the particle removal area is connected to the gravity oil removal area; the oil collection pipe and the PLC water level automatic control device are set in the gravity oil removal area The upper end of the gravity degreasing area, and the oil collecting pipe is slightly higher than the upper water level; the gravity degreasing area is connected with the adsorption treatment area through a gate, and the gate is set at the bottom of the gravity degreasing area; the adsorption treatment area is composed of oil separation felt drawers and activated carbon columns. To the top are the felt drawer and the activated carbon column, and the felt drawer and the activated carbon column are connected in turn. The upper end of the activated carbon column is open and lower than the water level; the drain pipe is located at the bottom of the adsorption area.

Beneficial effect

1. Considering that the incoming water may contain larger suspended solid particles, set up a fine screen in the particle removal area to block larger particles, and design a Use the gravity degreasing area where the floating oil is removed by sedimentation separation method, reduce the processing burden of oil separation felt and activated carbon column, and ensure that the effluent water quality meets the design requirements. The greaseproof felt is designed in the form of a drawer for easy cleaning and replacement. At the same time, a PLC water level automatic control device is installed in the gravity area to control the opening and closing of the gate of the adsorption treatment area. When the gravity degreasing area reaches the upper water level, the gate is opened to discharge water to the adsorption treatment area, and when the water level is lower, the gate is automatically closed to store water to ensure the effective removal of the floating oil in the gravity area. For the floating oil generated in the gravity degreasing area, it is necessary to design an oil collecting pipe to discharge the floating oil out of the device in time to prevent the device from being blocked. This part of the floating oil enters the oil collection tank through the oil collection pipe, and is processed uniformly after a period of time.

2. After being treated by gravity degreasing area, oil separation felt and activated carbon column, the sewage is discharged through the outlet pipe, so as to realize the effective removal of oil in oily wastewater. Treated water can enter the drainage network or be discharged directly.

The PLC water level automatic control device was purchased from Siemens.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a cross-sectional view of a small automatic multi-stage oily wastewater treatment device

Figure 2 is a top view of a small automatic multi-stage oily wastewater treatment device

Figure 3 is a three-view view of the felt drawer of a small automatic multi-stage treatment device for oily wastewater

Figure 4 is a program flow chart of the PLC water level automatic control device

Among them, 1. Water inlet pipe, 2. Fine screen, 3. Gravity degreasing area, 4. Oil collecting pipe, 5. Gate, 6. Adsorption treatment area, 7. Linoleum drawer, 8. Activated carbon column, 9. Drainage pipe, 10. Particle removal area, 11. Oil collection tank, 12. PLC water level automatic control device, 13. Lower water level, 14. Upper water level, A. Side view, B. Left view, C. Top view.

Detailed ways

Example 1

A small automatic multi-stage treatment device for oily wastewater, consisting of a water inlet pipe 1, a fine screen 2, a particle removal area 10, a gravity degreasing area 3, an oil collection pipe 4, an adsorption area 6, an automatic water level control device 12, an oil separation felt drawer 7, An activated carbon column 8 and a drain pipe (9); a water inlet pipe 1 is provided at the top of the particle removal area 10, and a fine screen 2 is arranged between the particle removal area 10 and the water inlet pipe 1, and the fine screen 2 is slightly higher than the water level; The particle removal area 10 is connected to the gravity oil removal area 3; the oil collection pipe 4 and the PLC water level automatic control device 12 are set at the upper end of the gravity oil removal area 3, and the oil collection pipe 4 is slightly higher than the upper water level; the gravity oil removal area 5 is connected to the adsorption treatment area Connected through the gate 5, the gate 5 is located at the bottom of the gravity degreasing zone 3; the adsorption treatment zone 6 is composed of a greaseproof felt drawer 7 and an activated carbon column 8, and the greaseproof felt drawer 7 and the activated carbon column 8 are successively from bottom to top, and the The greaseproof felt drawer 7 and the activated carbon column 8 are connected successively, and the upper end of the activated carbon column 8 is open and lower than the lower water level; the drain pipe 9 is located at the bottom of the adsorption area 6 .

The specific workflow is:

As shown in Figure 1, the oily wastewater enters the particle removal zone 10 of the device from the water inlet pipe 1, first passes through the fine screen 2, and the larger suspended particles in the wastewater are intercepted, and then the wastewater enters the gravity degreasing zone 3, due to the oil The density is lower than that of water and floats up, removes part of the floating oil, and reduces the processing burden of the subsequent process. The floating oil produced in the gravity degreasing area 3 needs to be designed with an oil collecting pipe 4 to discharge the floating oil in time to prevent the device from clogging, and this part of the floating oil enters the oil collecting tank 11 through the oil collecting pipe 4, and is processed uniformly after a period of time. The oily sewage with part of the floating oil removed enters the adsorption treatment area (6) through the gate 5. When the water level in the gravity zone reaches the upper water level, the gate 5 is opened by the PLC water level automatic control device 12 until the water level in the gravity zone is lower than the lower water level. Automatically shuts off. In the adsorption treatment area 6 , waste water is subjected to adsorption treatment through the greaseproof felt drawer 7 and the activated carbon column 8 in sequence, and finally discharged through the drain pipe 9 .

In Fig. 3, the linoleum is designed in the form of a linoleum drawer in this design, which facilitates the replacement of the linoleum, and the linoleum is fixed in the drawer by a cuboid support device made of steel bars. At the same time, in order to ensure the water outlet effect, the number of drawers is designed to be two.

Claims (2)

1. A small automatic multi-stage treatment device for oily wastewater, consisting of a water inlet pipe (1), a fine screen (2), a particle removal area (10), a gravity oil removal area (3), an oil collection pipe (4), and an adsorption area (6), PLC water level automatic control device (12), oil-proof felt drawer (7), activated carbon column (8) and drainpipe (9) constitute; A fine screen (2) is provided between the area (10) and the water inlet pipe (1), and the fine screen (2) is slightly higher than the lower water level; the particle removal area (10) is connected to the gravity degreasing area (3); The oil collecting pipe (4) and the PLC water level automatic control device (12) are set at the upper end of the gravity degreasing area (3), and the oil collecting pipe (4) is slightly higher than the upper water level; the gravity degreasing area (3) and the adsorption treatment area pass through the gate (5) Connected, the gate (5) is located at the bottom of the gravity degreasing area (3); the adsorption area (6) is composed of a greaseproof felt drawer (7) and an activated carbon column (8), and from bottom to top is a greaseproof felt Drawer (7), activated carbon column (8), described greaseproof felt drawer (7), activated carbon column (8) are connected successively, the upper end of activated carbon column (8) is open and lower than the water level; drainpipe (9) is located in the adsorption area (6) BOTTOM. 2. A small automatic multi-stage treatment device for oily wastewater according to claim 1, characterized in that the drawer of the greaseproof felt has 2-3 layers.

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