KR100224189B1 - The cleaning apparatus of a washing machine - Google Patents

Abstract

The present invention relates to a wastewater purification apparatus and method of a washing machine, the apparatus according to the present invention includes a flowmeter (20) for controlling the amount of wastewater discharged from the washing tank 11 through the drain pipe; A wastewater treatment unit (12) having a plurality of electrodes for electrolyzing the laundry wastewater applied through the plotter (20); A sensor provided at an outlet 12c of the wastewater treatment unit 12; A control unit for supplying power to the electrodes 12a and 12b provided in the wastewater treatment unit 12 and controlling the opening and closing of the floater 20 according to the concentration of the laundry wastewater detected by the sensor. do. The present invention can prevent the water pollution caused by the washing waste water by purifying the washing waste water generated in the washing cycle and the rinsing cycle several times at the same time with the drain after washing in the washing machine before discharged to the sewage. In addition, the present invention by detecting the concentration of the laundry waste water purified during the washing administration, if the detected concentration is less than the reference value by the end of the waste water purification in the laundry administration, if the above standard value by performing the waste water purification to the first rinsing or secondary rinsing In addition, the purification efficiency of the laundry wastewater can be improved.

Description

Wastewater Purifier and Method of Washing Machine

The present invention relates to the treatment of laundry wastewater discharged from a washing machine, and more particularly, by installing an electrochemical treatment device in the washing machine and purifying at the same time with the drainage after washing in the washing machine before discharge of the wastewater to sewage. The present invention relates to a wastewater purification apparatus and method for a washing machine capable of preventing water pollution.

In general, the problem of water pollution caused by synthetic detergents is caused by the inflow of living sewage into the river, which is discharged from households in cities that do not have their own sewage treatment facilities. In particular, according to the 1994 Environmental White Paper published by the Ministry of Environment, household sewage is 27% kitchen, 30% laundry, 25% bathroom, 8% toilet and toilet, 8% cleaning and other 10% water used for double washing. 25% of these wastewaters are purified by self-cleaning, but the remaining 75% are still flowing into the stream.

In relation to the water pollution problem caused by the synthetic detergents described above, the synthetic detergent treatment in the sewage treatment process has been studied, but there is no description of a technique for the direct treatment in the pre-use water treatment stage. In particular, in the case of laundry, which takes up a large part of the amount of synthetic detergent, a technique for directly treating wastewater after washing has not been published.

However, since the laundry wastewater is discharged to the river, it is treated by a general sewage treatment, and thus, it is impossible to efficiently process the laundry wastewater only. Therefore, there is a need for a technique for purifying washing wastewater before it is discharged from the washing machine.

In order to solve the conventional laundry wastewater treatment problem as described above, the present invention by installing an electrochemical treatment device in the washing machine, and by purifying at the same time with the drain after washing in the washing machine before discharged to the sewage after washing, It is an object of the present invention to provide a wastewater purification device of a washing machine that can prevent water pollution.

In addition, the present invention is to detect the concentration of the washing waste water purified in the washing administration, if the detected concentration is less than the reference value to end the waste water purification in the washing administration, if the above standard value to perform the waste water purification to the first rinsing or the second rinsing An object of the present invention is to provide a waste water purification method for a washing machine.

In order to achieve the above object, the device according to the present invention includes a flowmeter for adjusting the amount of waste water discharged from the washing tank through the drain pipe; A wastewater treatment unit having a plurality of electrodes for electrolyzing the laundry wastewater applied through the flowmeter; A sensor installed at an outlet of the wastewater treatment unit and detecting a concentration of laundry wastewater discharged to the outside; And a control unit for supplying power to an electrode provided in the wastewater treatment unit according to the concentration of the laundry wastewater detected by the sensor and controlling opening and closing of the flowmeter.

In addition, in order to achieve the above object, the method according to the present invention drives and purifies the laundry wastewater discharged during the washing administration, and if the concentration of the purified laundry wastewater is lower than the reference value, the wastewater treatment unit from the first rinsing stroke. A first purifying step of not driving the; A second purification step of purifying the laundry wastewater by driving the wastewater treatment unit in the first rinsing stroke if the concentration of the laundry wastewater purified in the laundry administration is higher than the reference value; If the concentration of the washing waste water purified in the first rinsing stroke is higher than the reference value, the third purification step of purifying the laundry waste water by driving the waste water treatment unit in the second rinsing stroke.

1 is a schematic view of a washing machine equipped with a wastewater purification apparatus of a washing machine according to the present invention.

2 is a block diagram of a wastewater purification apparatus of a washing machine according to the present invention.

3 is a flow chart showing a wastewater purification method of a washing machine according to the present invention.

Figure 4 is a graph showing the wastewater purification effect according to the present invention.

Explanation of symbols on the main parts of the drawings

10: washing machine 11: washing tank

12, 13, 14, 15: wastewater treatment apparatus 12a, 12b: electrode

12c: outlet 20: flowmeter

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

Referring to FIG. 1, the washing machine 10 applied to the present invention electrolyzes the washing tank 11 in which the waste water generated during the washing process is contained, and the laundry waste water discharged from the washing tank 11 through a drain pipe. The wastewater treatment parts 12, 13, 14, and 15 are discharged.

Referring to FIG. 2, a flowmeter 20 is provided between the laundry waste water container 11 and the waste water treatment unit 12 to control twice the amount of the laundry waste water. In the same manner, the remaining wastewater treatment units 13, 14, and 15 are provided with the above-mentioned flowmeter 20.

In addition, the wastewater treatment unit 12 electrolyzes and cleans the laundry wastewater applied from the washing tank 11 through the flowmeter 20, and includes a plurality of electrodes 12a and 12b disposed in a lattice form. And a discharge port 12c for discharging the purified water to the outside while passing through the electrodes 12a and 12b.

In addition, the outlet 12c is provided with a sensor for detecting the concentration of the waste water discharged to the outside.

The electrodes 12a and 12b of the wastewater treatment unit 12 receive power from a controller (not shown) that controls the operation of the washing machine to electrolyze the laundry wastewater.

The electrodes 12a and 12b of the wastewater treatment unit 12 are arranged in a lattice form in order to increase the contact time of the laundry wastewater by using aluminum electrodes and allowing the laundry wastewater to flow in a zigzag.

Other wastewater treatment units 13, 14, and 15 other than the wastewater treatment unit 12 are configured in the same manner as the wastewater treatment unit 12.

The laundry wastewater treatment apparatus according to the present invention includes four wastewater treatment units 12, 13, 14, and 15 each having a treatment capacity of 10L, but four wastewater treatment apparatuses for treating 80L of the washing machine drainage are provided. Waste water treatment may be further provided.

In order to mount such wastewater treatment parts 12, 13, 14, and 15 inside the washing machine, the weight thereof should be light and space is required in the washing machine. In the wastewater treatment apparatus according to the present invention, the wastewater treatment units 12, 13, 14, and 15 of FIG. 1 may be mounted in spaces on the lower side and both sides of the washing machine 10.

That is, the space below the actual washing machine is about 33000 cm ³ , and in the embodiment of the present invention, since the wastewater treatment unit 12 has a size of 16 cm × 15 cm × 16 cm, the waste water treatment unit 12 has a space of about 3960 cm ³ . Occupy. Therefore, when eight wastewater treatment units such as the wastewater treatment unit 12 are provided, since the required free space is 31680 cm ³ , a wastewater treatment apparatus capable of treating 80L of laundry wastewater may be mounted in the washing machine.

In addition, in general, the wastewater treatment apparatus according to the present invention is installed at the bottom of the washing tank 11 in consideration of the fact that the drainage of the washing machine 10 is a natural drainage.

In addition, since the degree of electrolysis reaction at the electrodes 12a and 12b depends on the electrode area, the heights of the wastewater treatment units 12, 13, 14, and 15 are implemented so that the electrode area is wide. And the length can be modified according to the clearance.

In addition, the weight of the wastewater treatment unit 12 is 2.3Kg, and the electrodes 12a and 12b each have a weight of 128g. In addition, the electrodes 12a and 12b may be implemented using a thin film material instead of aluminum, and the weight of the wastewater treatment apparatus may be reduced by shortening the distance between the electrodes 12a and 12b.

Referring to the operation of the wastewater treatment apparatus according to the invention configured as described above are as follows.

The laundry wastewater contained in the washing tank 11 is introduced into the wastewater treatment unit 12 through the flowmeter 20. At this time, the control unit supplies power to the electrodes 12a and 12b so that the laundry wastewater touching the electrodes 12a and 12b is electrolyzed.

The laundry wastewater introduced into the wastewater treatment unit 12 flows zigzag between the electrodes 12a and 12b arranged in a lattice form. Thus, by lengthening the time which wash | cleaning wastewater contacts the electrodes 12a and 12b, electrolysis time can be lengthened and purification efficiency can be improved.

Referring to FIG. 4, it can be seen that the biochemical oxygen demand (hereinafter referred to as COD) of the laundry wastewater is removed by electrolysing the laundry wastewater by the wastewater purification apparatus as described above.

In general, in the environmental engineering wastewater treatment process, COD, pH, suspended solids (SS), anionic surfactants (Surfactant), normal nucleic acid (n-Hexane), electrical conductivity (Conductivity), etc. are analyzed. Only COD removal rate is shown as an example. However, according to the present invention, it was confirmed that the analytes other than COD can be greatly improved, and other data graphs are not shown due to the limitation of the paper.

Waste water purification method of the washing machine according to the present invention carried out in the device configured as described above, as shown in Figure 3, to purify the laundry wastewater discharged during the washing administration by driving the wastewater treatment unit 12, the purified If the concentration of the washing waste water is lower than the reference value, the first purification step (S10), (S11), (S12), (S19) that does not drive the wastewater treatment unit 12 from the first rinsing stroke, and the washing purified in the washing stroke When the concentration of the waste water is higher than the reference value, the second purification step (S13), (S14), (S15), (S20) and the first rinsing to purify the laundry wastewater by driving the wastewater treatment unit 12 in the first rinsing stroke. If the concentration of the washing wastewater purified in the stroke is higher than the reference value, the second rinsing operation comprises a third purification step (S16), (S17) for driving the wastewater treatment unit 12 to purify the washing wastewater.

The first purification step (S10), (S11), (S12), (S19) is a step of performing a washing stroke (S10), and power to the electrodes 12a, 12b provided in the wastewater treatment unit 12 The step of purifying by washing the wastewater introduced through the flowmeter 20 by electrolysis (S11) and the concentration of the laundry wastewater discharged to the outside through the discharge port (12c) of the wastewater treatment unit 12 to a predetermined reference value Comparing with step S12.

In addition, the first purification step (S10), (S11), (S12), (S19) is a step of discharging the power to the wastewater treatment unit 12 to the outside without purifying the washing wastewater generated in the washing administration (S19).

The second purification step (S13), (S14), (S15), (S20) is the first rinsing step (S13), the concentration of the washing waste water purified in the washing stroke is higher than the reference value in the step (S12) If it is determined, supplying power to the wastewater treatment unit 12 to purify the laundry wastewater generated in the first rinsing stroke (S14), and the laundry wastewater discharged to the outside through the outlet 12c of the wastewater treatment unit 12 Comparing the concentration of (S15) with a predetermined reference value and the step of shutting off the power supply to the wastewater treatment unit 12 and discharging the washing wastewater generated in the second rinsing stroke to the outside without purification (S20). .

The third purification step (S16), (S17) includes a second rinsing step (S16), and supplying power to the wastewater treatment unit 12 to purify the laundry wastewater generated in the second rinsing stroke (S17). do.

In the present invention configured as described above, the first purification step (S10), (S11), (S12), (S19) and the second purification step (S13), (S14), (S15), (S20) is an example. For example, the reference value for the COD concentration of the laundry wastewater can be set to 60 ppm.

In steps S12 of the first purification step (S10), (S11), (S12), (S19), the sensor installed in the outlet (12c) detects the concentration of the washing wastewater passing through the wastewater treatment unit 12 and the control unit To apply. At this time, if the concentration of the washing waste water is lower than 60ppm step (S19) is performed, if higher than 60ppm, the second purification step (S13), (S14), (S15), (S20) of step S13 is performed.

Similarly, in steps S15 of the second purification step S13, S14, S15, and S20, the sensor detects the concentration of the laundry wastewater that has passed through the wastewater treatment unit 12. At this time, if the concentration of the washing waste water is lower than 60ppm step (S20) is performed, if higher than 60ppm, the second purification step (S16), step (S17) of (S17) is performed.

In addition, when the washing cycle and the rinsing cycle of the plurality of times are completed, the dehydration stroke is performed in step S18.

As described above, the present invention includes a wastewater purification device capable of electrolyzing laundry wastewater in a washing machine, and simultaneously purifying the wastewater after washing in a washing machine before draining the wastewater to sewage after washing, thereby causing water pollution due to washing wastewater. Can be prevented. In addition, the present invention by detecting the concentration of the laundry waste water purified during the washing administration, if the detected concentration is less than the reference value by the end of the waste water purification in the laundry administration, if the above standard value by performing the waste water purification to the first rinsing or secondary rinsing It has the effect of increasing the purification effect on the laundry wastewater.

Claims (4)

In the washing tank containing the laundry waste water at the time of washing, and the washing machine for naturally draining the laundry waste water through the drain pipe, A flow meter for adjusting the amount of waste water discharged from the washing tank through the drain pipe; A wastewater treatment unit having a plurality of electrodes for electrolyzing the laundry wastewater applied through the flowmeter; A sensor installed at an outlet of the wastewater treatment unit and detecting a concentration of laundry wastewater discharged to the outside; And a control unit for supplying power to an electrode provided in the wastewater treatment unit according to the concentration of the laundry wastewater detected by the sensor and controlling opening and closing of the flowmeter. In the washing machine that performs the washing cycle, the rinsing cycle several times, and the dehydration stroke, A first purifying step of purifying the laundry wastewater discharged during the washing administration by driving the wastewater treatment unit and not driving the wastewater treatment unit from the first rinsing stroke when the concentration of the purified laundry wastewater is lower than the reference value; A second purification step of purifying the laundry wastewater by driving the wastewater treatment unit in the first rinsing stroke if the concentration of the laundry wastewater purified in the laundry administration is higher than the reference value; And a third purification step of purifying the laundry wastewater by driving the wastewater treatment unit in the second rinsing stroke when the concentration of the laundry wastewater purified in the first rinsing stroke is higher than the reference value. The method of claim 2, wherein the first purification step Purifying by electrolysis of the laundry wastewater introduced through the flowmeter by applying power to an electrode provided in the wastewater treatment unit when the laundry administration is performed; Comparing the concentration of the laundry wastewater discharged to the outside through an outlet of the wastewater treatment unit with a predetermined reference value; Disposing the power supply to the wastewater treatment unit to discharge the washing wastewater generated in the washing administration to the outside without purification; wastewater purification method of a washing machine comprising a. The method of claim 2, wherein the second purification step If the concentration of the laundry wastewater purified in the washing administration is higher than the reference value, supplying power to the wastewater treatment unit to purify the washing wastewater generated in the first rinsing stroke; Comparing the concentration of the laundry wastewater discharged to the outside through an outlet of the wastewater treatment unit with a predetermined reference value; Disposing the power supply to the wastewater treatment unit to discharge the washing wastewater generated in the second rinsing stroke to the outside without purifying. Wastewater purification method of a washing machine comprising a.

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