CN219136612U

CN219136612U - Oily wastewater treatment equipment

Info

Publication number: CN219136612U
Application number: CN202320307132.3U
Authority: CN
Inventors: 邵永富; 费金波; 黄锋
Original assignee: Zhejiang Chuanning Environmental Protection Technology Co ltd
Current assignee: Zhejiang Chuanning Environmental Protection Technology Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-06-06
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses oily wastewater treatment equipment, which comprises an oil separation tank, an air floatation machine, a flocculation reaction tank and an ultrafiltration device, wherein one side of the oil separation tank is connected with a wastewater inlet pipe, one side of the bottom of the air floatation machine is connected with an overflow port of the oil separation tank through a first pipeline, a first water pump is arranged on the first pipeline, one side of the bottom of the flocculation reaction tank is connected with the overflow port of the air floatation machine through a second pipeline, a second water pump is arranged on the second pipeline, and a water inlet of the ultrafiltration device is connected with the overflow port of the flocculation reaction tank through a third pipeline; the oily wastewater treatment equipment further comprises an aeration pipe, the aeration pipe is arranged in the air flotation machine, the aeration pipe is spiral, a plurality of aeration holes are formed in the inner wall and the outer wall of the aeration pipe, the lower end of the aeration pipe is blocked, and the upper end of the aeration pipe is connected with the air outlet end of the air compressor through a straight pipe; the utility model can fully mix the compressed air with the oily wastewater in the air floatation machine, thereby improving the treatment effect of the oily wastewater.

Description

Oily wastewater treatment equipment

Technical Field

The utility model relates to the technical field of wastewater treatment equipment, in particular to oily wastewater treatment equipment.

Background

The oil-containing wastewater is a pollution source with large quantity and wide range, and mainly comprises oil-containing wastewater generated by petroleum exploitation and refining, liquid leakage in oil transportation and storage, oil-containing wastewater of a wash tank of a railway engine section, steel rolling wastewater and metal cleaning, ship shipping, oil cargo ship accidents, oil ship ballasting and the like. The main pollutants in the oily wastewater are oil, suspended matters, bacteria, dissolved organic compounds, trace heavy metal elements and the like, and in order to realize the treatment of the oily wastewater, at present, chinese patent publication No.: CN206408002U discloses an oily wastewater advanced treatment device, which comprises a cyclone-air floatation tank, an ozone oxidation tower, a micro flocculation reaction tank, an ultrafiltration device and a clean water tank; the cyclone-air floatation tank, the ozone oxidation tower, the micro flocculation reaction tank, the ultrafiltration device and the clear water tank are sequentially communicated through pipelines. The top of the cyclone-air floatation tank is provided with a water inlet, the bottom of the cyclone-air floatation tank is provided with a microporous air distribution plate, the microporous air distribution plate is connected with a compressed air inlet pipe, the top of the cyclone-air floatation tank is provided with an overflow groove, the overflow groove is provided with a #1 weir plate overflow port and an oil separation plate, and a connecting pipeline connected with the #1 weir plate overflow port is communicated with the ozone oxidation tower through a conveying pump. The bottom of the ozone oxidation tower is provided with an ozone micropore gas distribution device, the ozone micropore gas distribution device is connected with an ozone inlet pipe, the top of the ozone oxidation tower is provided with a #1 pore overflow port, and a connecting pipeline connected with the #1 pore overflow port is communicated with the micro flocculation reaction tank. The micro flocculation reaction tank is connected with the flocculant adding device, the top of the micro flocculation reaction tank is provided with a #2 pore canal overflow port, and a connecting pipeline connected with the #2 pore canal overflow port is communicated with the ultrafiltration device through a dispensing tank. The ultrafiltration device is communicated with the clean water tank through a connecting pipeline and a vacuum pump; however, in the above-mentioned oily wastewater advanced treatment device, the compressed air is introduced into the cyclone-air floatation tank through the microporous air distribution plate positioned at the bottom of the cyclone-air floatation tank, and because the microporous air distribution plate is positioned at the bottom of the cyclone-air floatation tank, the compressed air can only contact and fully mix with the sewage positioned at the bottom of the cyclone-air floatation tank, i.e. the compressed air cannot contact and fully mix with the sewage positioned at the upper part of the cyclone-air floatation tank, so that the defect of poor effect of fully mixing the compressed air with the sewage in the cyclone-air floatation tank exists, i.e. the defect of poor effect of treating the oily wastewater exists.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides oily wastewater treatment equipment which can fully mix compressed air with oily wastewater in an air floatation machine, so that the treatment effect on the oily wastewater can be improved.

The utility model relates to oily wastewater treatment equipment, which comprises an oil separation tank, an air floatation machine, a flocculation reaction tank and an ultrafiltration device, wherein one side of the oil separation tank is connected with a wastewater inlet pipe; the oily wastewater treatment equipment further comprises an aeration pipe, the aeration pipe is arranged in the air flotation machine, the aeration pipe is spiral, a plurality of aeration holes are formed in the inner wall and the outer wall of the aeration pipe, the lower end of the aeration pipe is plugged, the upper end of the aeration pipe is connected with the air outlet end of the air compressor through a straight pipe, and the outer wall of the straight pipe is welded and sealed with the air flotation machine.

According to the utility model, through the arrangement of the spiral aeration pipes, the inner wall and the outer wall of the aeration pipes are provided with the plurality of aeration holes, after compressed air is introduced into the aeration pipes, the compressed air can be sprayed out through the plurality of aeration holes on the inner wall and the outer wall of the aeration pipes, namely, the compressed air can be fully mixed with sewage in the air floatation machine, so that the treatment effect on oily wastewater can be improved.

The utility model relates to oily wastewater treatment equipment, wherein the lower end of an air floatation machine is provided with a mud discharging pipe, and a valve is arranged on the mud discharging pipe; through the arrangement of the sludge discharge pipe and the valve, when the valve is opened, the sludge accumulated at the bottom of the air floatation machine can be conveniently discharged out of the air floatation machine through the sludge discharge pipe, and after the sludge discharge is completed, the valve is closed.

The utility model relates to oily wastewater treatment equipment, wherein an aeration disc is arranged at the inner bottom of a flocculation reaction tank, the aeration disc is connected with a flocculant storage tank through a connecting pipe, the outer wall of the connecting pipe is welded and sealed with the flocculation reaction tank, and a third water pump is arranged on the connecting pipe; through adopting this kind of structure, under the effect of third water pump and aeration dish, the flocculating agent can be sprayed the flocculation reaction tank through the aeration dish in to can make the flocculating agent more fully mix with the sewage that is arranged in the flocculation reaction tank, can improve the flocculation effect of sewage promptly.

The utility model relates to oily wastewater treatment equipment, wherein a motor is fixed on the outer top of a flocculation reaction tank, a stirring rod is vertically fixed on an output shaft of the motor, the stirring rod is positioned in the flocculation reaction tank, and a pair of stirring blades are fixed on the outer wall of the stirring rod; through the setting of motor, puddler and stirring vane, when the motor drives puddler and stirring vane and rotates, stirring vane can realize the stirring that is located sewage and flocculating agent in the flocculation reaction tank, can make the flocculating agent more fully mix with the sewage that is located the flocculation reaction tank to can improve the flocculation effect of sewage.

The utility model relates to oily wastewater treatment equipment, wherein a plurality of pairs of stirring blades are fixed on the outer wall of a stirring rod, and the stirring blades are distributed at intervals along the vertical direction of the stirring rod and are fixed with the outer wall of the stirring rod; through a plurality of setting to stirring vane, when the puddler drives stirring vane and rotates, a plurality of stirring vane to stirring that can more fully realize being located sewage and the flocculating agent in the flocculation reaction tank, can make the flocculating agent more fully mix with the sewage that is located the flocculation reaction tank to can further improve the flocculation effect of sewage.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic diagram of a front view structure of the present utility model.

Detailed Description

Various embodiments of the utility model are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the utility model. That is, in some embodiments of the utility model, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

As shown in fig. 1, the oily wastewater treatment equipment comprises an oil separation tank 1, an air flotation machine 2, a flocculation reaction tank 3 and an ultrafiltration device 4, wherein one side of the oil separation tank 1 is connected with a wastewater inlet pipe 11, one side of the bottom of the air flotation machine 2 is connected with an overflow port of the oil separation tank 1 through a first pipeline 5, a first water pump 51 is arranged on the first pipeline 5, one side of the bottom of the flocculation reaction tank 3 is connected with the overflow port of the air flotation machine 2 through a second pipeline 6, a second water pump 61 is arranged on the second pipeline 6, and a water inlet of the ultrafiltration device 4 is connected with the overflow port of the flocculation reaction tank 3 through a third pipeline 7; the oily wastewater treatment equipment further comprises an aeration pipe 8, the aeration pipe 8 is arranged in the air flotation machine 2, the aeration pipe 8 is spiral, a plurality of aeration holes 81 are formed in the inner wall and the outer wall of the aeration pipe 8, the lower end of the aeration pipe 8 is plugged, the upper end of the aeration pipe 8 is connected with the air outlet end of the air compressor through a straight pipe 82, and the outer wall of the straight pipe 82 is welded and sealed with the air flotation machine 2.

The lower end of the air flotation machine 2 is provided with a mud discharging pipe 21, and a valve 22 is arranged on the mud discharging pipe 21; through the arrangement of the sludge discharge pipe and the valve, when the valve is opened, the sludge accumulated at the bottom of the air floatation machine can be conveniently discharged out of the air floatation machine through the sludge discharge pipe, and after the sludge discharge is completed, the valve is closed.

An aeration disc 91 is arranged at the inner bottom of the flocculation reaction tank 3, the aeration disc 91 is connected with a flocculant storage tank through a connecting pipe 92, the outer wall of the connecting pipe 92 is welded and sealed with the flocculation reaction tank 3, and a third water pump 93 is arranged on the connecting pipe 92; through adopting this kind of structure, under the effect of third water pump and aeration dish, the flocculating agent can be sprayed the flocculation reaction tank through the aeration dish in to can make the flocculating agent more fully mix with the sewage that is arranged in the flocculation reaction tank, can improve the flocculation effect of sewage promptly.

A motor 101 is fixed on the outer top of the flocculation reaction tank 3, a stirring rod 102 is vertically fixed on an output shaft of the motor 101, the stirring rod 102 is positioned in the flocculation reaction tank 3, and a pair of stirring blades 103 are fixed on the outer wall of the stirring rod 102; through the setting of motor, puddler and stirring vane, when the motor drives puddler and stirring vane and rotates, stirring vane can realize the stirring that is located sewage and flocculating agent in the flocculation reaction tank, can make the flocculating agent more fully mix with the sewage that is located the flocculation reaction tank to can improve the flocculation effect of sewage.

A plurality of pairs of stirring blades 103 are fixed on the outer wall of the stirring rod 102, and the stirring blades 103 are distributed at intervals along the vertical direction of the stirring rod 102 and are fixed with the outer wall of the stirring rod 102; through a plurality of setting to stirring vane, when the puddler drives stirring vane and rotates, a plurality of stirring vane to stirring that can more fully realize being located sewage and the flocculating agent in the flocculation reaction tank, can make the flocculating agent more fully mix with the sewage that is located the flocculation reaction tank to can further improve the flocculation effect of sewage.

When the sewage treatment device works, the oily wastewater can firstly enter the oil separation tank, oil stains can be blocked by the baffle plate in the oil separation tank after the oily wastewater enters the oil separation tank, then the wastewater can overflow from the overflow port of the oil separation tank and enter the air flotation machine through the first pipeline, the air flotation machine can carry out solid-liquid separation on the wastewater, then the wastewater can overflow from the overflow port of the air flotation machine and enter the flocculation reaction tank through the second pipeline, residual impurities in the wastewater can be flocculated after the wastewater enters the flocculation reaction tank, then the wastewater after flocculation can enter the ultrafiltration device through the third pipeline, and the ultrafiltration device can enable the wastewater to reach the discharge standard after the wastewater is filtered and purified.

The foregoing description is only illustrative of the utility model and is not to be construed as limiting the utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, or the like, which is within the spirit and principles of the present utility model, should be included in the scope of the claims of the present utility model.

Claims

1. An oily wastewater treatment device, which is characterized in that: the device comprises an oil separation tank (1), an air flotation machine (2), a flocculation reaction tank (3) and an ultrafiltration device (4), wherein one side of the oil separation tank (1) is connected with a wastewater inlet pipe (11), one side of the bottom of the air flotation machine (2) is connected with an overflow port of the oil separation tank (1) through a first pipeline (5), a first water pump (51) is arranged on the first pipeline (5), one side of the bottom of the flocculation reaction tank (3) is connected with the overflow port of the air flotation machine (2) through a second pipeline (6), a second water pump (61) is arranged on the second pipeline (6), and a water inlet of the ultrafiltration device (4) is connected with the overflow port of the flocculation reaction tank (3) through a third pipeline (7); the oil-containing wastewater treatment equipment further comprises an aeration pipe (8), wherein the aeration pipe (8) is arranged in the air floatation machine (2), the aeration pipe (8) is spiral, a plurality of aeration holes (81) are formed in the inner wall and the outer wall of the aeration pipe (8), the lower end of the aeration pipe (8) is plugged, the upper end of the aeration pipe (8) is connected with the air outlet end of the air floatation machine through a straight pipe (82), and the outer wall of the straight pipe (82) is welded and sealed with the air floatation machine (2).

2. The oily wastewater treatment device according to claim 1, characterized in that a sludge discharge pipe (21) is arranged at the lower end of the air floatation machine (2), and a valve (22) is arranged on the sludge discharge pipe (21).

3. The oily wastewater treatment device according to claim 1 or 2, characterized in that an aeration disc (91) is arranged at the inner bottom of the flocculation reaction tank (3), the aeration disc (91) is connected with the flocculant storage tank through a connecting pipe (92), the outer wall of the connecting pipe (92) is welded and sealed with the flocculation reaction tank (3), and a third water pump (93) is arranged on the connecting pipe (92).

4. The oily wastewater treatment device according to claim 1 or 2, characterized in that a motor (101) is fixed on the outer top of the flocculation reaction tank (3), a stirring rod (102) is vertically fixed on the output shaft of the motor (101), the stirring rod (102) is positioned in the flocculation reaction tank (3), and a pair of stirring blades (103) are fixed on the outer wall of the stirring rod (102).

5. The oily wastewater treatment device according to claim 4, wherein a plurality of pairs of stirring blades (103) are fixed on the outer wall of the stirring rod (102), and the plurality of pairs of stirring blades (103) are distributed at intervals along the vertical direction of the stirring rod (102) and are fixed with the outer wall of the stirring rod (102).