KR102227038B1 - Apparatus for removing alkylbenzene sulfonate - Google Patents

Abstract

The present invention relates to an alkylbenzene sulfonate (ABS) removal apparatus to remove ABS from laundry wastewater. According to the present invention, a first supply pipe (P1) is connected to a first tank (10), a second tank (20) is arranged around an upper vertical part (11) of the first tank (10), a third tank (30) is disposed on the lower part of the second tank (20), the second tank (20) and the third tank (30) are connected by a second connection pipe (P2), a fourth tank (40) is arranged around an upper vertical part (31) of the third tank (30), and a third discharge pipe (P3) is connected to the fourth tank (40). Accordingly, when laundry wastewater mixed with air is supplied to the first tank (10) through the first supply pipe (P1), ABS contained in the laundry wastewater floats on the upper part of the laundry wastewater in the form of foam (scum) in the first tank (10) by the air.

Description

Alkylbenzene sulfonate removal device {APPARATUS FOR REMOVING ALKYLBENZENE SULFONATE}

The present invention relates to an alkylbenzene sulfonate removal apparatus for removing alkylbenzene sulfonate from laundry wastewater discharged from a laundry factory (or car wash).

Korean Patent Application Publication No. 10-2011-0066301 (applied on June 17, 2011) introduces “a device and method for purifying laundry wastewater”.

The washing wastewater purification device includes a pretreatment filter that filters solid particles of 10㎛ or more in the washing wastewater to produce primary water, a carbon filter that adsorbs and removes components such as oil in the primary water purification, and a solid phase of 1㎛ or more in the primary water purification. Secondary filter to create secondary water by filtering particles, tertiary filter to create final water by filtering solid particles of 001㎛ or more in secondary water, ozone generator to remove microorganisms in washing wastewater and/or final water, in final water It consists of an ultraviolet ray generator for removing microorganisms, at least one tank for storing various kinds of purified water, at least one pump for a flow line and flow of liquid, and a controller for control.

However, the washing wastewater purifier removes wastewater by a filter filtration method, but it is not mentioned that alkylbenzene sulfate is removed, and there is a disadvantage that the alkylbenzene sulfate contained in the wastewater cannot be removed by a filter filtration method. .

Accordingly, an object of the present invention is that when the laundry wastewater mixed with air is supplied to the first tank, the alkylbenzene sulfonate (AlkylBenzene Sulfonate; referred to as ABS) contained in the laundry wastewater from the first tank As it floats on the upper part of the laundry wastewater in the form of), ABS is separated from the laundry wastewater by floating separation, and the scum containing ABS is supplied to the second tank beyond the upper vertical part of the first tank, and the second tank The scum of the scum is supplied to the third tank through the second connecting pipe, part of the laundry wastewater contained in the scum is condensed, and the scum supplied to the third tank is supplied to the fourth tank beyond the upper vertical part of the third tank, As the scum supplied to the 4th tank is discharged to the external treatment facility through the 3rd discharge pipe, ABS can be removed from the laundry wastewater, and alkylbenzene sulfonate, which can purify the laundry wastewater without adding additional chemicals, is removed. It is to provide the device.

In the alkylbenzene sulfonate removal apparatus according to the present invention for achieving the above object, a first supply pipe is connected to a first tank having a hopper shape with an open top, and the second tank is at the lower end of the upper vertical portion of the first tank. The inner end of the horizontal portion is joined to each other, a second tank is arranged around the upper vertical portion of the first tank, and a third tank in the form of a hopper with an open top is arranged at the lower portion of the second tank, and the second tank and the third tank The tank is connected by a second connection pipe, and the inner end of the horizontal part of the fourth tank is joined to the lower end of the upper vertical part of the third tank, so that the fourth tank is disposed around the upper vertical part of the third tank, and the fourth When the third discharge pipe is connected to the tank, when the laundry wastewater mixed with air is supplied to the first tank through the first supply pipe, the alkylbenzene sulfonate (ABS) contained in the laundry wastewater from the first tank is bubbled by air ( By floating on the upper part of the laundry wastewater in the form of scum), the ABS is separated from the laundry wastewater, and the scum generated in the first tank crosses the upper vertical part and is supplied to the second tank, and the scum of the second tank connects the second connection pipe. The scum supplied to the third tank is supplied to the third tank through the condensation of part of the laundry wastewater contained in the scum, and the scum supplied to the third tank is supplied to the fourth tank beyond the upper vertical portion of the third tank, and the scum supplied to the fourth tank is It is characterized in that it is discharged to an external treatment facility through a third discharge pipe.

The first supply pipe is connected to the washing waste water supply pipe and the air supply pipe, so that the washing waste water is mixed with air and supplied to the first tank.

A fourth branch pipe is branched from the air supply pipe, and a fourth branch pipe is connected to the second connecting pipe.

In the first tank, a first water level meter and a fifth discharge pipe are connected to a lower end, and a first valve is mounted on the fifth discharge pipe.

The first water level meter includes an upper level sensing unit and a lower level sensing unit, and when the level of the washing wastewater supplied to the first tank reaches the upper level sensing unit, the first valve is opened to discharge the washing wastewater, When the water level of the washing wastewater reaches the lower level sensing unit, the opened first valve is closed.

The second connection pipe is characterized in that the first pressure feeding means is mounted, and the scum and air of the second connection pipe are forcibly supplied to the third tank.

In the third tank, a second water level meter and a sixth return pipe are connected at a lower end, a sixth return pipe is connected to a washing wastewater supply pipe, and a pump is mounted on the sixth return pipe.

The second water level meter includes an upper level sensing unit and a lower level sensing unit, and when the level of the washing wastewater supplied to the third tank reaches the upper level sensing unit, the pump is driven to remove the washing wastewater condensed from the scum. 6 It is returned to the washing wastewater supply pipe through the return pipe, and when the water level of the washing wastewater reaches the lower level sensing unit, the operation of the pump is stopped.

The third discharge pipe is equipped with a second pressurizing means, and the scum including ABS is pumped from the fourth tank to an external treatment facility through the third discharge pipe by the second pressurizing means.

Thereby, the alkylbenzene sulfonate removal apparatus according to the present invention has the effect of removing ABS from laundry wastewater and purifying laundry wastewater without adding additional chemicals.

1 is a block diagram schematically showing an alkylbenzene sulfonate removal apparatus according to the present invention

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

1, the alkylbenzene sulfonate removal apparatus according to the present invention has a first supply pipe (P1) connected to a hopper-shaped first tank 10 with an open top, and the upper vertical portion of the first tank 10 The inner end of the horizontal part 21 of the second tank 20 is joined to the lower end of the part 11, and the second tank 20 is disposed around the upper vertical part 11 of the first tank 10, and , A third tank 30 in the form of a hopper with an open top is disposed under the second tank 20, and the second tank 20 and the third tank 30 are connected by a second connection pipe P2. It is connected, and the inner end of the horizontal part 41 of the fourth tank 40 is joined to the lower end of the upper vertical part 31 of the third tank 30, so that the upper vertical part 31 of the third tank 30 ) A fourth tank 40 is disposed around the circumference, and a third discharge pipe P3 is connected to the fourth tank 40, so that the laundry wastewater mixed with air is connected to the first tank 10 through the first supply pipe P1. ), the alkylbenzene sulfonate (AlkylBenzene Sulfonate; hereinafter referred to as ABS) contained in the laundry wastewater in the first tank 10 is washed in the form of bubbles (so-called scum) by air. By floating on the upper part of the wastewater, ABS (not shown) is separated from the laundry wastewater (not shown), and the scum (including ABS) generated in the first tank 10 removes the upper vertical part 11. Is supplied to the second tank 20, and the scum of the second tank 20 is supplied to the third tank 30 through the second connection pipe P2, so that part of the laundry wastewater contained in the scum is condensed, The scum supplied to the third tank 30 crosses the upper vertical portion 31 of the third tank 30 and is supplied to the fourth tank 40, and the scum supplied to the fourth tank 40 is a third discharge pipe. It is discharged to an external treatment facility (not shown) through (P3).

The first supply pipe P1 is connected to the washing wastewater supply pipe P1-1 and the air supply pipe P1-2, so that the washing wastewater is supplied to the first tank 10 in a mixed state with air.

As a result, the ABS contained in the washing waste water can be floated on the upper portion of the washing waste water in the form of bubbles by the air, and the ABS contained in the scum is separated from the washing waste water.

The fourth branch pipe P4 is branched from the air supply pipe P1-2, and the fourth branch pipe P4 is connected to the second connection pipe P2.

Thereby, the scum supplied to the third tank 30 through the second connecting pipe P2 can form more bubbles by the air supplied through the fourth branch pipe P4.

The first tank 10 has a first water level meter 15 and a fifth discharge pipe P5 connected to the lower end, and a first valve V1 is mounted on the fifth discharge pipe P5.

The first water level meter 15 includes an upper level sensing unit 16 and a lower level sensing unit 17, and the level of the washing wastewater supplied to the first tank 10 is stored in the upper level sensing unit 16. Upon reaching, the first valve V1 is opened to discharge laundry wastewater, and when the level of the laundry wastewater reaches the lower level sensing unit 17, the opened first valve V1 is closed.

The second connection pipe (P2) is equipped with a first pressure feeding means (50) to force the scum and air of the second connection pipe (P2) to the third tank (30).

The first pressure feeding means 50 may be an electric blower.

The third tank 30 has a second water level meter 35 and a sixth return pipe (P6) connected to the lower end, the sixth return pipe (P6) is connected to the washing wastewater supply pipe (P1-1), and 6 The pump 60 is mounted on the return pipe (P6).

The second water level measuring device 35 includes an upper level sensing unit 36 and a lower level sensing unit 37, and the level of the washing wastewater supplied to the third tank 30 is stored in the upper level sensing unit 36. When it reaches, the pump 60 is driven to return the washing waste water condensed from the scum to the washing waste water supply pipe P1-1 through the sixth return pipe P6, and the water level of the washing waste water is lower level detection unit ( When 37) is reached, the operation of the pump 60 is stopped.

The third discharge pipe (P3) is equipped with a second pressure conveying means (70), the scum including ABS by the second pressure conveying means (70) is externally through the third discharge pipe (P3) from the fourth tank (40). It is sent to a treatment facility (not shown).

In the alkylbenzene sulfonate removal apparatus according to the present invention configured as described above, when the laundry wastewater mixed with air is supplied to the first tank 10 through the first supply pipe P1, the first tank 10 is supplied to the laundry wastewater. The included ABS floats on the top of the laundry wastewater in the form of foam (scum) by air, so that the ABS is separated from the laundry wastewater.

At this time, when the water level of the laundry wastewater separated from the ABS reaches the upper level detection unit 16 of the first water level meter 15, the first valve V1 is opened and discharged to a settling tank (not shown), When the water level reaches the lower level detector 17 of the first water level meter 15, the first valve V1 is closed.

In addition, the scum generated in the first tank 10 passes through the upper vertical portion 11 and is supplied to the second tank 20, and the scum of the second tank 20 is third through the second connection pipe P2. It is supplied to the tank 30.

At this time, air is supplied to the second connection pipe P2 through the fourth branch pipe P4, so that the scum supplied from the second connection pipe P2 to the third tank 30 absorbs more bubbles by the air. Can be formed.

In addition, the scum supplied to the third tank 30 is supplied to the fourth tank 40 over the upper vertical portion 11 of the third tank 30, and the scum supplied to the fourth tank 40 is removed. 3 It is discharged to an external treatment facility (not shown) through the discharge pipe (P3).

At this time, when the washing waste water condensed from the scum is filled into the third tank 30, and when the washing waste water reaches the upper level sensing unit 36 of the second water level meter 35, the pump 60 is driven. , When the washing wastewater is supplied to the washing wastewater supply pipe P1-1, and the water level of the washing wastewater reaches the lower level sensing unit 37, the operation of the pump 60 is stopped.

The alkylbenzene sulfonate removal apparatus according to the present invention as described above has the advantage of removing ABS from laundry wastewater and purifying laundry wastewater without adding additional chemicals.

10: first tank 20: second tank
30: third tank 40: fourth tank

Claims (7)

The first supply pipe P1 is connected to the hopper-shaped first tank 10 with an open top, and a horizontal portion of the second tank 20 at the lower end of the upper vertical portion 11 of the first tank 10 ( 21) is joined, the second tank 20 is disposed around the upper vertical part 11 of the first tank 10, and the upper part of the second tank 20 is opened in the form of a hopper. The third tank 30 is arranged, the second tank 20 and the third tank 30 are connected by a second connection pipe P2, and the upper vertical portion 31 of the third tank 30 is At the bottom, the inner end of the horizontal portion 41 of the fourth tank 40 is joined, the fourth tank 40 is disposed around the upper vertical portion 31 of the third tank 30, and the fourth tank ( When the third discharge pipe P3 is connected to 40), when the washing wastewater mixed with air is supplied to the first tank 10 through the first supply pipe P1, the washing wastewater contained in the washing wastewater in the first tank 10 As the alkylbenzene sulfonate (ABS) floats on the upper part of the laundry wastewater in the form of scum by air, the ABS is separated from the laundry wastewater, and the scum generated in the first tank 10 crosses the upper vertical part 11 and is removed. 2 It is supplied to the tank 20, and the scum of the second tank 20 is supplied to the third tank 30 through the second connection pipe P2, so that some of the washing wastewater contained in the scum is condensed, and the third The scum supplied to the tank 30 crosses the upper vertical portion 31 of the third tank 30 and is supplied to the fourth tank 40, and the scum supplied to the fourth tank 40 is supplied to the third discharge pipe (P3). Alkylbenzene sulfonate removal device, characterized in that discharged to an external treatment facility through).
The method of claim 1,
The first supply pipe (P1) is connected to the washing waste water supply pipe (P1-1) and the air supply pipe (P1-2), characterized in that the washing waste water is supplied to the first tank 10 in a mixed state with air. Alkylbenzene sulfonate removal device.
The method of claim 2,
The fourth branch pipe (P4) is branched from the air supply pipe (P1-2), and the fourth branch pipe (P4) is connected to the second connection pipe (P2).
The method of claim 1,
The first tank 10 has a first water level meter 15 and a fifth discharge pipe P5 connected to the lower end, and a first valve V1 is mounted on the fifth discharge pipe P5,
The first water level meter 15 includes an upper level sensing unit 16 and a lower level sensing unit 17, and the level of the washing wastewater supplied to the first tank 10 is stored in the upper level sensing unit 16. When it reaches, the first valve (V1) is opened to discharge the laundry wastewater, and when the water level of the laundry wastewater reaches the lower level sensing unit (17), the opened first valve (V1) is closed. Alkylbenzene sulfonate removal device.
The method of claim 1,
Alkylbenzene, characterized in that the second connection pipe (P2) is equipped with a first pressure conveying means (50) to force the scum and air of the second connection pipe (P2) to the third tank (30). Sulfonate removal device.
The method of claim 1,
The third tank 30 has a second water level meter 35 and a sixth return pipe (P6) connected to the lower end, the sixth return pipe (P6) is connected to the washing wastewater supply pipe (P1-1), and 6 The pump 60 is mounted on the return pipe (P6),
The second water level measuring device 35 includes an upper level sensing unit 36 and a lower level sensing unit 37, and the level of the washing wastewater supplied to the third tank 30 is stored in the upper level sensing unit 36. When it reaches, the pump 60 is driven to return the washing waste water condensed from the scum to the washing waste water supply pipe P1-1 through the sixth return pipe P6, and the water level of the washing waste water is lower level detection unit ( 37), the alkylbenzene sulfonate removal device, characterized in that the operation of the pump (60) is stopped.
The method of claim 1,
The third discharge pipe (P3) is equipped with a second pressure conveying means (70), the scum including ABS by the second pressure conveying means (70) is externally through the third discharge pipe (P3) in the fourth tank (40). Alkylbenzene sulfonate removal device, characterized in that the pumped to the treatment facility.

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