KR102666861B1 - Automatic water sampling apparatus and method of wastewater - Google Patents

Abstract

An automatic wastewater collection device and method are disclosed. The disclosed automatic wastewater sampling device includes a flange portion, a water sampling portion configured to be in fluid communication with the flange portion, a water reservoir configured to be in fluid communication with the flange portion, and a device configured to automatically control fluid transfer from the flange portion to the water sampling portion and the reservoir. Includes a configured control unit.

Description

Automatic water sampling apparatus and method of wastewater}

An automatic wastewater collection device and method are disclosed. More specifically, an automatic wastewater sampling device and method that can improve worker convenience and safety along with work efficiency are disclosed.

Generally, wastewater treatment plants require the collection of raw water samples to measure the condition of incoming wastewater or analyze components contained in the wastewater, and this is performed manually by operators.

In addition, when sampling wastewater, the initial wastewater remaining in the sampling port is drained into a separate container due to the risk of component deterioration, and the raw wastewater flowing through the pipe at the time of sampling is collected and analyzed.

In addition, when collecting wastewater samples, workers are likely to be exposed to wastewater scattering, so they wear acid-resistant clothing to collect samples. This not only reduces work efficiency, but also greatly reduces worker convenience and safety.

Meanwhile, TMS ROOM's AUTO SAMPLER, which is widely distributed for effluent water, can be used to collect samples with one nozzle for one target water quality, but it can be used for collecting samples from different wastewater inflow sources, such as the inlet of a wastewater treatment plant. There is a problem that it is difficult to apply when collecting wastewater that has various components and flows in through multiple pipes.

One embodiment of the present invention provides an automatic wastewater sampling device that can improve operator convenience and safety as well as work efficiency.

Another embodiment of the present invention provides an automatic wastewater collection method that can improve operator convenience and safety as well as work efficiency.

One aspect of the present invention is,

Flange part;

a water sampling unit configured to be in fluid communication with the flange unit;

a water reservoir configured to be in fluid communication with the flange portion; and

It provides an automatic wastewater sampling device including a control unit configured to automatically adjust fluid transfer from the flange unit to the water sampling unit and the water storage unit.

The flange portion may include a plurality of sampling flanges, the water sampling portion may include a plurality of water sampling bottles, and the water storage portion may include a drain water tank.

The automatic wastewater sampling device may further include a sampling nozzle configured to inject sampling wastewater into each sampling bottle.

Each sampling flange and each sampling nozzle are connected through a first pipe, each sampling flange and the drain water tank are connected through a second pipe, and the first pipe and the second pipe are partially connected. It can be configured to serve both sections.

The flange portion may further include one or more flanges selected from a deodorizing flange, an air flange, a water flange, and a drain flange.

The deodorizing flange and the water reservoir may be connected through a third pipe.

The air flange and the drain water tank are connected through a fourth pipe, and the fourth pipe may be configured to share some sections with the first pipe and the second pipe.

The water flange and the drain water tank are connected through a fifth pipe, and the fifth pipe may be configured to share some sections with the first pipe and the second pipe, respectively.

The fourth pipe and the fifth pipe may be configured to serve as some sections.

The water sampling unit further includes a door, and the control unit can be configured to monitor the real-time water sampling operation status of the device, the water level status of the water sampling bottle and the drain water tank, the sample line flushing status, the door open alarm operation status, and the device alarm operation status. .

The automatic wastewater sampling device may further include a first sensor configured to detect the water level of each water sampling bottle.

The automatic wastewater sampling device may further include a pump configured to discharge wastewater in the drain water tank to the outside.

The automatic wastewater sampling device may further include a second sensor configured to detect the water level of the drain water tank.

The automatic wastewater sampling device may further include a door servo motor configured to automatically open and close the door.

The automatic wastewater sampling device may further include an electrical unit and a fan cooler configured to cool it.

The automatic wastewater sampling device may further include a plurality of solenoid valves configured to control the movement path of the fluid.

Another aspect of the present invention is,

Draining wastewater remaining in one or more sampling pipes (S10);

Sampling at least one type of wastewater into at least one type of water collection bottle through a sampling pipe and a sampling nozzle connected thereto (S20);

At least partially flushing the sampling pipe using air (S30-1); and

At least partially flushing the sampling pipe using water (S40),

The steps (S10) to (S40) provide an automatic wastewater sampling method that is automatically performed according to a preset water sampling schedule.

The automatic wastewater sampling method may further include a step (S30-2) of at least partially flushing the sampling pipe using air after the step (S40).

The automatic wastewater collection method may further include a step (S50) of transferring the wastewater discharged or flushed in any one of steps (S10) to (S40) to a drain water tank.

The automatic wastewater sampling method may further include a step (S60) of automatically discharging the wastewater in the drain water tank to the outside using a pump.

The automatic wastewater sampling device and method according to one embodiment of the present invention has the following advantages:

(1) Since it is a non-contact device, it prevents human damage due to leakage accidents when workers collect wastewater, and minimizes the wastewater sampling time of workers, ensuring the stability of the workplace and preventing the spread of secondary damage.

(2) It can be installed anywhere regardless of the installation environment, and the convenience of collecting water collection bottles at the desired time can be secured by setting the water collection schedule by date, day of the week, and time.

(3) Equipped with a control unit and lighting device, real-time monitoring of the overall device for the water collection unit, water storage unit, and electrical equipment is possible, and it has the effect of more accurately identifying the safety of workers and the condition inside the water tank from the outside.

(4) In addition, wastewater of different compositions can be collected through multiple wastewater collection nozzles, and by connecting multiple wastewater pipes and one piece of equipment, there is an effect of compactly utilizing space and reducing the amount of water collection equipment.

1 is a front view of an automatic wastewater sampling device according to an embodiment of the present invention.
Figure 2 is a plan view of the automatic wastewater sampling device of Figure 1.
Figure 3 is a right side view of the automatic wastewater sampling device of Figure 1.
Figure 4 is a left side view of the automatic wastewater sampling device of Figure 1.
Figure 5 is a rear view of the automatic wastewater sampling device of Figure 1.
Figures 6 and 7 are enlarged views showing the configuration of the deodorizing pipe in the automatic wastewater sampling device of Figure 1.
FIG. 8A is an enlarged view showing the configuration of a sampling pipe in the automatic wastewater sampling device of FIG. 1.
Figure 8b is an enlarged view of part A of Figure 7a.
Fig. 9A is a diagram showing the drain operation of sampling water.
Figure 9b is a diagram showing the operation of sampling water.
Figure 9c is a diagram showing an air flushing operation.
Figure 9d is a diagram showing a water flushing operation.

Hereinafter, an automatic wastewater sampling device according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view of an automatic wastewater sampling device 100 according to an embodiment of the present invention, FIG. 2 is a plan view of the automatic wastewater sampling device 100 of FIG. 1, and FIG. 3 is a front view of the automatic wastewater sampling device 100 of FIG. 1 ( 100), FIG. 4 is a left side view of the automatic wastewater sampling device 100 of FIG. 1, and FIG. 5 is a rear view of the automatic wastewater sampling device 100 of FIG. 1.

Referring to Figures 1 to 5, the automatic wastewater sampling device 100 according to an embodiment of the present invention includes an enclosure 101, a flange portion 110, a water sampling portion 130, a water storage portion 140, and a control unit ( 120) and wheels 102.

The enclosure 101 is a part that accommodates other components except this. This enclosure 101 may be made of SUS 304 and may be coated with an anti-corrosion coating through acid treatment and primer coating.

The flange portion 110 is a portion that includes a plurality of flanges that connect two or more pipes to each other.

Specifically, the flange portion 110 may include a plurality of sampling flanges 112-1 to 112-8.

Each sampling flange (112-1 to 112-8) may be connected to a specific wastewater treatment plant (not shown) through piping.

In addition, the automatic wastewater sampling device 100 may further include sampling nozzles (131-1 to 131-8) connected to each sampling flange (112-1 to 112-8) through a first pipe (not shown). there is.

The water collection unit 130 may be configured to be in fluid communication with the flange unit 110.

Additionally, the water sampling unit 130 may include a plurality of water sampling bottles 132-1 to 132-8.

The water reservoir 140 may be configured to be in fluid communication with the flange portion 110.

Additionally, the water reservoir 140 may include a drain water tank 141 and a drain water tank base 142 supporting the drain water tank 141.

The drain water tank 141 may be made of a polypropylene-based material.

In addition, smart glass is applied to the water reservoir 140, and the drain water tank base 142 and its lower part are configured to be separated, thereby reducing pump noise.

Each sampling nozzle (131-1 to 131-8) may be configured to inject sampling wastewater into each water collection bottle (132-1 to 132-8).

In addition, the automatic wastewater sampling device 100 includes a plurality of solenoid valves (SV, SV11, SV12, SV21, SV22) configured to control the movement path of the fluid, as shown in FIGS. 8A, 8B, and 9A to 9D. It may further include. In this specification, fluid is a concept that collectively refers to wastewater, air, and water.

FIG. 8A is an enlarged view showing the configuration of the sampling pipe in the automatic wastewater sampling device 100 of FIG. 1, and FIG. 8b is an enlarged view showing part A of FIG. 7A. The operation method of the plurality of solenoid valves (SV) shown in FIGS. 8A and 8B will be clearly understood with reference to FIGS. 9A to 9D. By the action of a plurality of solenoid valves (SV), one type of wastewater can be sampled in one or two or more of the plurality of water collection bottles (132-1 to 132-8), or two or more types of wastewater can be sampled simultaneously. there is.

FIG. 9A is a diagram showing a drain operation of sampling water, FIG. 9B is a diagram showing a sampling operation of sampling water, FIG. 9C is a diagram showing an air flushing operation, and FIG. 9D is a diagram showing a water flushing operation. 9A to 9D, only the sampling flange 112-8 and the first pipe corresponding thereto are shown, but the sampling flanges 112-1 to 112-7 and the first pipe corresponding to each of them are also shown as the sampling flange (112-8). 112-8) and the corresponding first pipe may have the same or similar configuration.

9A and 9B, each sampling flange (112-1 to 112-8) and each sampling nozzle (131-1 to 131-8) are connected through a first pipe, and each sampling flange ( 112-1 to 112-8) and the drain water tank 141 are connected through a second pipe, and the first pipe and the second pipe may be configured to serve as some sections. Accordingly, during the wastewater sampling operation, multiple types of wastewater are collected from each of the sampling flanges (112-1 to 112-8), the combined section of the first pipe and the second pipe, the remaining section of the first pipe, and each sampling nozzle (131). -1 to 131-8) are sequentially injected into each water collection bottle (132-1 to 132-8) (see arrow in FIG. 9b), or when the sampling water is drained, multiple types of wastewater are discharged from each sampling flange. (112-1 to 112-8), the combined section of the first pipe and the second pipe, and the remaining section of the second pipe can be sequentially passed through and injected into the drain water tank 141 (see arrow in FIG. 9a). . As a result, wastewater is collected in each water collection bottle (132-1 to 132-8), or a second pipe (specifically, In this way, the combined section of the first pipe and the second pipe) is pre-flushed with each wastewater before sampling the wastewater, thereby reducing measurement errors due to contamination of impurities. For reference, when draining the sampling water in FIG. 9A, the on-off valves (V1, V2, V3) and solenoid valves (SV13, SV22) may be opened, and the solenoid valves (SV11, SV12, SV21) may be closed. Also, during the operation of collecting sampling water in FIG. 9B, the open/close valves (V1, V2, V3) and solenoid valves (SV13, SV21) may be opened, and the solenoid valves (SV11, SV12, SV22) may be closed.

Referring again to FIGS. 1 to 5, the flange portion 110 may further include one or more flanges selected from the deodorizing flange 111, the air flange 115, the water flange 114, and the drain flange 113. .

Figures 6 and 7 are enlarged views showing the configuration of the deodorizing pipe in the automatic wastewater sampling device 100 of Figure 1.

Referring to FIGS. 6 and 7 , the deodorizing flange 111 and the water reservoir 140 may be connected through a third pipe 111a. Accordingly, the bad odor generated in the water reservoir 140 may sequentially pass through the third pipe 111a and the deodorizing flange 111 and be discharged to the outside.

Referring to FIG. 9C, the air flange 115 and the drain water tank 141 are connected through a fourth pipe, and the fourth pipe is configured to share some sections with the first pipe and the second pipe. You can. Accordingly, during the air flushing operation, air is supplied to the air flange 115, the dedicated section of the fourth pipe, and the non-dedicated section of the fourth pipe (combined sections of the fourth pipe, the first pipe, the second pipe, and/or the fifth pipe) ) can be sequentially passed through and injected into the drain water tank 141 (see arrow in Figure 9c). As a result, the fourth pipe connecting the air flange 115 and the drain water tank 141 is pre-flushed with air before wastewater sampling, thereby reducing measurement errors due to contamination of impurities. For reference, during the air (IA: instrument air) flushing operation in Figure 9c, the on-off valves (V1, V2, V3) and solenoid valves (SV11, SV22) may be opened, and the solenoid valves (SV12, SV13, SV21) may be closed. there is.

Also, referring to FIG. 9D, the water flange 114 and the drain water tank 141 are connected through a fifth pipe, and the fifth pipe is partially connected to the first pipe, the second pipe, and the fourth pipe. It can be configured to serve both sections. Accordingly, during the water flushing operation, water is supplied to the water flange 114, a dedicated section of the fifth pipe, and a non-dedicated section of the fifth pipe (combined sections of the fifth pipe, the first pipe, the second pipe, and/or the fourth pipe) ) can be sequentially passed through and injected into the drain water tank 141 (see arrow in FIG. 9D). As a result, the fifth pipe connecting the water flange 114 and the drain water tank 141 is flushed with water before wastewater sampling, thereby reducing measurement errors due to contamination of impurities. For reference, during the flushing operation of ionized water (IW) in Figure 9d, the on-off valves (V1, V2, V3) and solenoid valves (SV12, SV22) may be opened, and the solenoid valves (SV11, SV13, SV21) may be closed. there is.

The drain flange 113 may serve as a passage for discharging wastewater collected in the drain water tank 141 to the outside (see Figure 8a). Specifically, the initial wastewater remaining in the pipe before and after wastewater sampling is collected into the drain water tank 141 through the drain process, and the wastewater generated during the flushing process is also collected into the drain water tank 141. ) When the water level reaches a certain level, the pumps 143 and 144 are operated to drain the water collected in the drain water tank 141 through the drain flange 113. In addition, when a water leak occurs in the device in an emergency situation, the scattered wastewater is collected in the drain water tank 141, and the pumps 143 and 144 are operated above a certain water level and drained to the outside through the drain flange 113.

In addition, the water collection unit 130 may further include a door (not shown), a door servo motor 134, and a water collection bottle shelf 133.

The door may be configured to open and close by automatically sliding up and down by the door servo motor 134.

The water collection bottle shelf 133 supports a plurality of water collection bottles 132-1 to 132-8 and may be configured in a pull out manner to move horizontally back and forth.

As described above, the water collection unit 130 is configured with an automatic door opening and closing up and down sliding method and a shelf pull-out method, so that convenience can be provided for the operator to work more easily when collecting the water collection bottle, and when the door is opened, the control unit ( Stability can be ensured by interlocking the operations of 120).

In addition, a space for a drain is secured at the bottom of the water collection unit 130 to allow leaked wastewater to flow into the water storage unit 140 in the event of a secondary leak, and the drain pipe installed in the drain pipe, sampling pipe, air pipe, and water pipe can be used. An internal solenoid valve can improve ease of maintenance through eye care applications.

In addition, visibility can be secured by applying front smart glass and water sampling bottle position LED to the water sampling unit 130.

The control unit 120 may be configured to automatically adjust fluid transfer from the flange unit 110 to the water collection unit 130 and the water storage unit 140.

Specifically, the control unit 120 monitors the real-time water sampling operation status of the device 100, automatic/manual operation mode setting status, water level status of the water collection bottle and drain water tank, sample line flushing status, door open alarm operation status, and device alarm operation status. Can be configured to monitor.

The real-time status display of the drain water tank changes the image according to the water level status and may include displaying the water level value, displaying ultrasonic sensor values, and displaying the operating status of the pump. The sample line flushing status display indicates the status of the sample line currently being flushed and can indicate status such as door opening, system management, and system security.

More specifically, the control unit 120 checks the status of the equipment in real time, monitors the water sampling status and system through screen touch method and simple user operation, displays the water sampling bottle status (1L, 0.5L), displays the water sampling number count, and displays the water sampling bottle status ( 0%, 50%, 100%) and can be configured to display no water collection bottle.

More specifically, the control unit 120 may include a power connection terminal block 121 and a control panel 122.

The power connection terminal block 121 serves to supply power to all electrical components of the automatic wastewater sampling device 100, including the control panel 122.

Additionally, the control unit 120 may be configured to be able to open and close up and down through the door.

In addition, the automatic wastewater sampling device 100 may further include a first sensor 135 configured to detect the water level of each sampling bottle (132-1 to 132-8). A plurality of first sensors 135 are installed at different heights for each water collection bottle (132-1 to 132-8) so that the water level of each water collection bottle (132-1 to 132-8) is set to a predetermined water level (i.e. When the height of the first sensor 135 is reached, a signal is transmitted to the control unit 120, and the control unit 120, which receives this signal, transfers the wastewater to the corresponding water collection bottles 132-1 to 132-8. You can stop.

The first sensor 135 may be a photo sensor.

Additionally, the automatic wastewater sampling device 100 may include an electric unit 145 and a fan cooler 146.

The electrical unit 145 may include electrical components (PLC: programmable logic controller, power supply, etc.) for operating the automatic wastewater collection device 100.

The fan cooler 146 may be configured to cool the heat generated in the electrical unit 145.

In addition, the automatic wastewater sampling device 100 may further include pumps 143 and 144 configured to discharge wastewater in the drain water tank 141 to the outside.

Only one or both pumps 143 and 144 may be operated.

Additionally, the automatic wastewater sampling device 100 may further include a second sensor (not shown) configured to detect the water level of the drain water tank 141. The second sensor transmits a signal to the control unit 120 when the water level of the drain water tank 141 reaches a predetermined water level (L, H, HH), and the control unit 120, which receives this signal, adjusts the water level. Accordingly, one or both pumps 143 and 144 can be operated to discharge wastewater from the drain water tank 141 to the outside. As an example, the second sensor transmits a signal to the control unit 120 when the water level of the drain water tank 141 reaches a predetermined water level (L, H), and the control unit 120 receiving this signal operates the pump. (143, 144) can be operated alternately to slowly discharge wastewater from the drain water tank (141) to the outside. In this way, the lifespan of the pumps 143 and 144 can be improved by operating the two pumps 143 and 144 alternately. As another example, the second sensor transmits a signal to the control unit 120 when the water level of the drain water tank 141 reaches a predetermined water level (HH), and the control unit 120 receiving this signal pumps ( By operating both 143 and 144), wastewater can be quickly discharged from the drain water tank 141 to the outside.

Pumps 143 and 144 may be diaphragm pumps.

The second sensor may be an ultrasonic sensor.

In addition, the automatic wastewater sampling device 100 may further include a door (not shown) for maintenance of the solenoid valve (SV) at the rear and a servo drive switch 124 that acts as a hinge of the door.

In the automatic wastewater sampling device 100 according to an embodiment of the present invention having the above configuration, the operator starts sampling by setting the day, time, minute, and water sampling amount on the control panel screen. When the water sampling command is executed, the device 100 drains the waste water previously remaining in the inlet pipe for a set time, drains a certain amount of waste water, and then collects waste water equal to the selected water collection capacity into the water collection bottle. After completion of water sampling, the residual wastewater remaining in the water sampling nozzle is pushed out by pressurizing it with air, and after removing the residual water, the internal piping is flushed and drained using water. After flushing the water, the internal piping is flushed again with air to drain and the process is completed.

The manual water sampling operation method is performed by the operator selecting the water sampling capacity (1L, 0.5L) on the control panel screen and pressing the water sampling execution button. The subsequent process is the same as the automatic operation method.

The automatic flushing operation method is the same as the process after completion of water sampling in the automatic water sampling operation method, and automatic flushing is possible periodically by setting a period.

Hereinafter, a method for automatically collecting wastewater according to an embodiment of the present invention will be described in detail.

The automatic wastewater sampling method according to an embodiment of the present invention includes draining wastewater remaining in one or more types of sampling pipes (S10), and draining the one or more types of wastewater into one or more types of water collection bottles through the sampling pipes and sampling nozzles connected thereto. It includes a step of sampling (S20), a step of at least partially flushing the sampling pipe using air (S30-1), and a step of at least partially flushing the sampling pipe using water (S40).

The step (S30-1) may discharge wastewater remaining in the sampling pipe.

The automatic wastewater sampling method may further include a step (S30-2) of at least partially flushing the sampling pipe using air after the step (S40).

The step (S30-2) may discharge water remaining in the sampling pipe.

In addition, the automatic wastewater collection method may further include a step (S50) of transferring the wastewater discharged or flushed in any one of steps (S10) to (S40) to a drain water tank.

In addition, the method of automatically collecting wastewater may further include a step (S60) of automatically discharging wastewater in the drain water tank to the outside using a pump.

Although the present invention has been described with reference to the drawings, these are merely illustrative examples, and those skilled in the art will understand that various modifications and equivalent implementations can be made therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

100: Automatic wastewater sampling device 101: Enclosure
102: wheel 110: flange part
111: Deodorizing flange 112-1~112~8: Sampling flange
113: drain flange 114: water flange
115: air flange 120: control unit
121: power connection terminal block 122: control panel
123: Emergency switch 124: Servo drive switch
130: Water sampling unit 131-1~131-8: Sampling nozzle
132-1~132-8: Water sampling bottle 133: Water sampling bottle shelf
134: door servo motor 135: photo sensor
140: reservoir 141: drain water tank
142: Drain water tank base 143, 144: Pump
145: electrical unit 146: fan cooler
V1~V3: Open/close valve SV: Solenoid valve

Claims (20)

An automatic wastewater sampling device configured to perform a drain operation of sampling water, a sampling operation of sampling water, an air flushing operation, and a water flushing operation, the automatic wastewater sampling device comprising:
Flange part;
a water sampling unit configured to be in fluid communication with the flange unit;
a water reservoir configured to be in fluid communication with the flange portion; and
A control unit configured to automatically adjust fluid transfer from the flange unit to the water collection unit and the reservoir unit,
The flange portion includes a plurality of sampling flanges, the water sampling portion includes a plurality of water sampling bottles, and the water storage portion includes a drain water tank,
The automatic wastewater sampling device further includes a sampling nozzle configured to inject sampling wastewater into each sampling bottle,
Each sampling flange and each sampling nozzle are connected through a first pipe, each sampling flange and the drain water tank are connected through a second pipe, and the first pipe and the second pipe are partially connected. It is designed to be used as a section,
The flange portion further includes one or more flanges selected from a deodorizing flange, an air flange, a water flange, and a drain flange,
The automatic wastewater sampling device further includes a plurality of solenoid valves configured to control the movement path of the fluid,
The deodorizing flange and the water reservoir are connected through a third pipe,
The air flange and the drain water tank are connected through a fourth pipe, and the fourth pipe is configured to share some sections with the first pipe and the second pipe, respectively,
The water flange and the drain water tank are connected through a fifth pipe, and the fifth pipe is configured to share some sections with the first pipe and the second pipe, respectively,
The fourth pipe and the fifth pipe are configured to serve as some sections,
When draining the sampling water, multiple types of wastewater sequentially pass through each sampling flange, the combined section of the first pipe and the second pipe, and the remaining section of the second pipe and are injected into the drain water tank. ,
When the sampling water is collected, the plurality of types of wastewater sequentially pass through each sampling flange, a combined section of the first pipe and the second pipe, the remaining section of the first pipe, and each of the sampling nozzles. Injected into each collection bottle,
During the air flushing operation, air sequentially passes through the air flange, the dedicated section of the fourth pipe, and the non-dedicated section of the fourth pipe and is injected into the drain water tank,
When the water flushing operation is performed, the water sequentially passes through the water flange, the dedicated section of the fifth pipe, and the non-dedicated section of the fifth pipe and is injected into the drain water tank. delete delete delete delete delete delete delete delete According to paragraph 1,
The water sampling unit further includes a door, and the control unit is configured to monitor the real-time water sampling operation status of the device, the water level status of the water sampling bottle and the drain water tank, the sample line flushing status, the door open alarm operation status, and the device alarm operation status. Device. According to paragraph 1,
An automatic wastewater sampling device further comprising a first sensor configured to detect the water level of each water sampling bottle. According to paragraph 1,
An automatic wastewater collection device further comprising a pump configured to discharge wastewater in the drain water tank to the outside. According to paragraph 1,
An automatic wastewater sampling device further comprising a second sensor configured to detect the water level of the drain water tank. According to clause 10,
An automatic wastewater sampling device further comprising a door servo motor configured to automatically open and close the door. According to paragraph 1,
An automatic wastewater sampling device further comprising an electrical unit and a fan cooler configured to cool the same. delete A method of automatically sampling wastewater using the automatic wastewater sampling device according to any one of claims 1 and 10 to 15,
Draining wastewater remaining in a plurality of sampling pipes (S10);
Sampling multiple types of wastewater into a plurality of water collection bottles through a sampling pipe and a sampling nozzle connected thereto (S20);
At least partially flushing the sampling pipe using air (S30-1); and
At least partially flushing the sampling pipe using water (S40),
The steps (S10) to (S40) are an automatic wastewater sampling method in which the steps are automatically performed according to a preset sampling schedule. According to clause 17,
The automatic wastewater collection method further includes a step (S30-2) of at least partially flushing the sampling pipe using air after the step (S40). According to clause 18,
An automatic wastewater collection method further comprising transferring the wastewater discharged or flushed in any one of the steps (S10) to (S40) to a drain water tank (S50). According to clause 18,
An automatic wastewater collection method further comprising the step of automatically discharging wastewater in the drain water tank to the outside using a pump (S60).

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