CN109457441B - Clothes treatment device and water treatment circulation control method thereof - Google Patents

Clothes treatment device and water treatment circulation control method thereof Download PDF

Info

Publication number
CN109457441B
CN109457441B CN201710797117.0A CN201710797117A CN109457441B CN 109457441 B CN109457441 B CN 109457441B CN 201710797117 A CN201710797117 A CN 201710797117A CN 109457441 B CN109457441 B CN 109457441B
Authority
CN
China
Prior art keywords
water
water outlet
electric flocculation
control valve
water inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710797117.0A
Other languages
Chinese (zh)
Other versions
CN109457441A (en
Inventor
杨青波
巫志远
邓永建
王立东
高源�
戴文娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Little Swan Electric Co Ltd
Original Assignee
Wuxi Little Swan Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Little Swan Electric Co Ltd filed Critical Wuxi Little Swan Electric Co Ltd
Priority to CN201710797117.0A priority Critical patent/CN109457441B/en
Publication of CN109457441A publication Critical patent/CN109457441A/en
Application granted granted Critical
Publication of CN109457441B publication Critical patent/CN109457441B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/007—Arrangements of water softeners
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The invention discloses a clothes treatment device and a water treatment circulation control method thereof, wherein the clothes treatment device comprises: a housing; the barrel body is arranged in the shell and is provided with a water inlet end and a water outlet end; and the electric flocculation device is arranged in the shell and is connected between the water inlet end and the water outlet end so as to purify the water flowing out of the water outlet end. According to the clothes treatment device provided by the embodiment of the invention, the electric flocculation device is arranged to purify water discharged from the barrel body of the clothes treatment device, and the purified water is conveyed into the barrel body again, so that the purified water is recycled, namely, in the washing process, the clothes treatment device can complete the whole washing and rinsing process only by feeding water from the outside once, thereby realizing the recycling of water and saving water resources on the premise of not influencing the washing efficiency.

Description

Clothes treatment device and water treatment circulation control method thereof
Technical Field
The invention relates to the technical field of clothes treatment equipment, in particular to a clothes treatment device and a water treatment circulation control method thereof.
Background
One of the related art washing machines achieves the object of purifying the contaminated water by providing a filter or a surface adsorption device at the end of a drain pipe, however, the filter or the surface adsorption device must be periodically replaced, and the efficiency of the filter or the surface adsorption device is lowered as time elapses. Furthermore, the filter or the surface adsorption device can remove only large-sized solid matters, and cannot remove detergents and heavy metals dissolved in water.
Another related art washing machine treats laundry sewage using a reagent coagulation-air-float process and a biological treatment process. However, the reagent coagulation-air flotation method requires a special reagent feeding system and an air flotation facility, has complex equipment and high operation cost, and is not suitable for treating laundry sewage. Biological processes suffer from poor impact load resistance, lack of intermittent operability, and are difficult to remove phosphates and surfactants from laundry wastewater.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the present invention provides a laundry treating apparatus which can realize secondary use of washing water, thereby saving water resources.
The invention also provides a water treatment circulation control method of the clothes treatment device.
A laundry treating apparatus according to an embodiment of a first aspect of the present invention includes: a housing; the barrel body is arranged in the shell and is provided with a water inlet end and a water outlet end; and the electric flocculation device is arranged in the shell and is connected between the water inlet end and the water outlet end so as to purify the water flowing out of the water outlet end.
According to the clothes treatment device provided by the embodiment of the invention, the electric flocculation device is arranged to purify water discharged from the barrel body of the clothes treatment device, and the purified water is conveyed into the barrel body again, so that the purified water is recycled, namely, in the washing process, the clothes treatment device can complete the whole washing and rinsing process only by feeding water from the outside once, thereby realizing the recycling of water and saving water resources on the premise of not influencing the washing efficiency.
According to one embodiment of the invention, the electroflocculation apparatus comprises: a direct current power supply; a water container for containing water discharged from the water outlet end, the water container having a water inlet and a purified water outlet, the water inlet being connected to the water outlet end by a water inlet tube; the anode is connected with the positive pole of the direct current power supply and stretches into the water container, and the cathode is connected with the negative pole of the direct current power supply and stretches into the water container.
According to a further embodiment of the invention, the electroflocculation apparatus further comprises: the filtering piece is arranged at the purified water outlet; or upstream of the clean water outlet in the direction of water flow.
Optionally, the anode and the cathode respectively include a plurality of electrode plates, and the electrode plates of the anode and the electrode plates of the cathode are arranged in a staggered manner.
Optionally, the plurality of electrode plates of the anode and the plurality of electrode plates of the cathode are arranged in parallel and spaced apart, and the distance between any adjacently arranged electrode plate of the anode and the electrode plate of the cathode is 10 mm.
Optionally, the anode is an iron electrode or an aluminum electrode.
According to a further embodiment of the present invention, the laundry treating apparatus further comprises: the water pumping device is used for conveying water in the barrel body into the water container, is positioned in the shell and is connected to the water inlet pipe; and the water inlet control valve is connected between the water pumping device and the water inlet so as to control the on-off of a water path between the water pumping device and the water inlet.
Optionally, a primary filter is connected to the water inlet pipe, and the primary filter is located between the water outlet end and the water pumping device.
According to a further embodiment of the present invention, the laundry treating apparatus further comprises: and the two ends of the backwashing pipe are respectively communicated with the purified water outlet and the outlet end, a backwashing control valve for controlling the on-off of a water path in the backwashing pipe is arranged on the backwashing pipe, and the backwashing control valve and the water inlet control valve are not opened at the same time.
Optionally, the water container further comprises a sewage outlet, and a sewage discharge pipe connected to the sewage outlet and a sewage discharge control valve for controlling the on-off of a water path in the sewage discharge pipe are further arranged in the shell.
Optionally, the laundry treating apparatus further comprises: and the water outlet pipe is connected between the water inlet end and the purified water outlet, and a water outlet control valve is arranged on the water outlet pipe.
The laundry treating apparatus according to a further embodiment of the present invention further includes: and the water storage tank is arranged in the shell, is connected between the water purification outlet and the water inlet end and is used for storing water discharged from the water purification outlet.
Optionally, the storage tank and the water container are arranged side by side below the tub.
A water treatment cycle control method of a laundry treatment apparatus according to an embodiment of a second aspect of the present invention includes the steps of: s1, discharging the water in the barrel into the electric flocculation device; s2, controlling the electric flocculation device to work so that the water entering the electric flocculation device is subjected to electric flocculation reaction; and S3, discharging the water purified by the electric flocculation device into the barrel.
According to an embodiment of the invention, before the step S1, the water inlet control valve between the water outlet end of the barrel body and the water inlet of the electric flocculation device is opened, and the back flush control valve between the water outlet end of the barrel body and the purified water outlet of the electric flocculation device is closed.
According to an embodiment of the invention, after step S3, the water inlet control valve between the water outlet end of the bucket body and the water inlet of the electric flocculation device is closed, the back flush control valve between the water outlet end of the bucket body and the purified water outlet of the electric flocculation device is opened, the sewage discharge control valve on the electric flocculation device is opened, and water is reversely fed to the purified water outlet of the electric flocculation device.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a laundry treating apparatus according to an embodiment of the present invention;
fig. 2 is a schematic view of a water treatment cycle of a laundry treating apparatus according to an embodiment of the present invention;
FIG. 3 is a graph showing a change in Chemical Oxygen Demand (COD) of wash water of the laundry treatment apparatus before and after being treated by the electric flocculation apparatus according to the embodiment of the present invention;
FIG. 4 is a graph showing the change in conductivity of the washing water of the laundry treating apparatus according to the embodiment of the present invention before and after being treated by the electric flocculation apparatus;
FIG. 5 is a graph showing the variation of the concentration of suspended solids before and after the washing water of the laundry treating apparatus is treated by the electric flocculation apparatus according to the embodiment of the present invention;
fig. 6 is a graph showing the change of the concentration of the surfactant before and after the washing water of the laundry treating apparatus is treated by the electrocoagulation device according to the embodiment of the present invention.
Reference numerals:
the laundry treating apparatus 100 is provided with a laundry treating device,
a shell 11, a barrel body 12, a water inlet end 121, a water outlet end 122,
an electric flocculation device 20, a water inlet 201, a purified water outlet 202, a sewage outlet 203,
a dc power supply 21, a water container 22, an anode 23, a cathode 24, a filter 25,
the combination of the primary filter 30, the water extraction device 40,
the water inlet control valve 50, the water inlet pipe 51,
the water outlet control valve 60, the water outlet pipe 61,
a backwash control valve 70, a backwash pipe 71,
a water storage tank 80 and a pollution discharge control valve 90.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the "laundry treatment device" mentioned in the present invention may include any device capable of treating laundry, including but not limited to a washing machine and a washing and drying machine, to which the technical solution of the present invention can be applied. The main contaminants in laundry wastewater come from detergents. The detergent contains chemical components such as a surfactant, a whitening agent, a builder and the like, if the detergent can not be effectively removed in a rinsing stage of the washing machine, secondary pollution can be caused to clothes, and the polluted clothes contact the skin of a human body and can influence the body health of people.
The main effective components of the detergent are surfactant and cleaning agent, and the auxiliary components are bleaching agent, fluorescent whitening agent, corrosion inhibitor, foam regulator, enzyme, etc. The common surfactants in the detergent comprise sodium Alkyl Benzene Sulfonate (ABS) and linear alkyl benzene sulfonate (LAS), wherein the ABS is not easy to biodegrade and has long retention time in the environment. LAS biodegradability is significantly improved, but both have a benzene group and are not completely decomposed. Both ABS and LAS require phosphate as a purification agent, which is an important cause of eutrophication.
In addition, the detergent can emulsify and disperse hydrophobic organic pollutants such as petroleum products, polychlorinated biphenyl and the like entering the water body. The alkylbenzene sulfonate has strong foaming capacity, the higher the concentration of the alkylbenzene sulfonate is, the larger the volume of generated foam is, when the excessive alkylbenzene sulfonate is discharged into a water body, the water body generates smell and forms a large amount of foam on the water surface, so that the reoxygenation capacity of the water body is influenced, and the foam on the water surface can scatter with the wind in windy weather to cause the spread of various bacteria.
Therefore, the laundry sewage is the main source of domestic sewage at present, and from the viewpoint of environmental protection, it is required to reduce the concentration of detergent in the sewage, i.e. to perform purification treatment before discharging, or to recycle the washing water of the washing machine, so as to reduce the discharge amount of the sewage.
In order to solve the above problems, the related art washing machine achieves the purpose of purifying the sewage by providing a filter or a surface adsorption device at the end of the drain pipe. However, such filters or surface suction devices must be replaced periodically and their efficiency decreases as the filter or surface suction device is used over time. Furthermore, the filter or the surface adsorption device can remove only large-sized solid matters, and cannot remove detergents and heavy metals dissolved in water.
Another related art washing machine treats laundry sewage using a reagent coagulation-air-float process and a biological treatment process. However, the reagent coagulation-air flotation method requires a special reagent feeding system and an air flotation facility, has complex equipment and high operation cost, and is not suitable for treating laundry sewage. Biological processes suffer from poor impact load resistance, lack of intermittent operability, and are difficult to remove phosphates and surfactants from laundry wastewater. To this end, the present invention proposes a laundry treating apparatus.
A laundry treating apparatus 100 according to an embodiment of the first aspect of the present invention will be described with reference to fig. 1 to 6.
As shown in fig. 1 and 2, a laundry treating apparatus 100 according to an embodiment of the present invention includes: the device comprises a shell 11, a barrel body 12 and an electric flocculation device 20, wherein the barrel body 12 is arranged in the shell 11 and is provided with a water inlet end 121 and a water outlet end 122, and the electric flocculation device 20 is arranged in the shell 11 and is connected between the water inlet end 121 and the water outlet end 122 so as to purify water flowing out of the water outlet end 122.
Specifically, the electric flocculation device 20 can perform electric flocculation treatment on the water entering the electric flocculation device 20, so that pollutants such as detergent, oil stain, suspended matters, bacteria, viruses and the like in the water can generate large floccules in the electric flocculation device 20, the large floccules are gathered into large solid particles to be separated from the water body, then the floccules are filtered to form clean water, and finally the clean water enters the barrel body 12 through the water inlet end 121 of the barrel body 12, so that secondary utilization of the washing water and the rinsing water is realized.
According to the clothes treatment device 100 of the embodiment of the invention, the electric flocculation device 20 is arranged to purify water discharged from the barrel body 12 of the clothes treatment device 100, and the purified water is conveyed into the barrel body 12 again, so that the purified water is recycled, namely, in the washing process, the clothes treatment device 100 can complete the whole washing and rinsing process only by entering water from the outside once, thereby realizing the recycling of water and saving water resources on the premise of not influencing the washing efficiency.
As shown in fig. 2, the electric flocculation apparatus 20 includes: a direct current power supply 21, a water container 22, an anode 23 and a cathode 24. The water container 22 is used for containing water discharged from the water outlet end 122, the water container 22 has a water inlet 201 and a purified water outlet 202, and the water inlet 201 is connected to the water outlet end 122 through a water inlet pipe 51. The anode 23 is connected to the positive electrode of the dc power supply 21 and extends into the water container 22, and the cathode 24 is connected to the negative electrode of the dc power supply 21 and extends into the water container 22.
Optionally, the anode 23 is an iron electrode or an aluminum electrode. That is, using metal such as iron and aluminum as anode 23, Al can be generated in the electric flocculation apparatus 20 under the action of DC3e+、Fe2e+Ions are hydrolyzed and polymerized to form a series of polynuclear hydroxyl complexes and hydroxides, the substances have adsorption and condensation functions, pollutants such as detergent, oil stain, suspended matters, bacteria, viruses and the like in the sewage generate large floccules, the sewage is electrolyzed under the action of the substances, electrodes can continuously generate oxygen and hydrogen to form tiny bubbles with adhesive property, and the flocculent suspended matters are brought to the water surface in the floating process of the bubbles, so that the aim of removing the pollutants is fulfilled, and the purification treatment of the sewage is realized.
This electric flocculation device 20 simple structure, it is small, need not add chemical agent in the processing procedure to sewage, the treatment cost is low, and the sludge volume of production is little, and the operation is simple and easy, and subsequent processing is also comparatively simple, in the facilitate promotion clothing processing apparatus 100.
In some examples, the electroflocculation apparatus 20 further comprises: the filter element 25, the filter element 25 can filter the flock generated in the water by the electric flocculation device 20, so that cleaner water is obtained.
In some specific examples, the filter element 25 is provided at the clean water outlet 202, so as to filter the water at the clean water outlet 202; or filter element 25, is located upstream of clean water outlet 202 in the direction of water flow, so as to filter the water before it exits clean water outlet 202, resulting in cleaner water, which is discharged from clean water outlet 202.
In some examples, the anode 23 and the cathode 24 each include a plurality of electrode plates, and the electrode plates of the anode 23 are arranged to be staggered with the electrode plates of the cathode 24.
In some specific examples, the plurality of electrode plates of the anode 23 and the plurality of electrode plates of the cathode 24 are arranged in parallel and spaced apart, and the distance between any adjacently arranged electrode plate of the anode 23 and the electrode plate of the cathode 24 is 10 mm. Therefore, the distance that the adjacent electrode plates meet the electric conduction can be increased as much as possible, and the sewage can be dissolved more.
In some examples, a water turbidity detecting device (not shown) is further disposed in the water container 22, and the water turbidity detecting device is used for detecting the turbidity of the water in the water container 22, so as to control the opening and closing of the electric flocculation apparatus 20. Specifically, when the turbidity of the water is higher than the set turbidity, the electric flocculation device 20 is continuously controlled to perform electric flocculation treatment on the water; and if the turbidity of the water is lower and is equal to or lower than the set turbidity, controlling the electric flocculation device 20 to close and stopping the electric flocculation treatment.
As shown in fig. 1 and 2, according to one embodiment of the present invention, the laundry treating apparatus 100 further includes: a water pumping device 40 and an inlet control valve 50 for delivering water in the tub 12 to the water container 22. Wherein, the water pumping device 40 may be a water pump.
The water pumping device 40 is positioned in the housing 11 and connected to the water inlet pipe 51, and the water inlet control valve 50 is connected between the water pumping device 40 and the water inlet 201 to control the on-off of the water path between the water pumping device 40 and the water inlet 201. Specifically, when the washing process is performed, the water inlet control valve 50 is in a closed state, so that water in the tub 12 does not leak; after the washing process is finished, the controller of the laundry treating apparatus 100 controls the water inlet control valve 50 to be opened, so that the sewage is discharged into the water container 22 of the electrocoagulation device 20 to perform the water purification treatment.
Further, the primary filter 30 is connected to the water inlet pipe 51, and the primary filter 30 is located between the water outlet end 122 and the water pumping device 40. The primary filter 30 can convey the water in the barrel body 12 to the electric flocculation device 20 after primary filtration, so as to prevent excessive impurities from entering the electric flocculation device 20, thereby reducing the load of the electric flocculation device 20 and prolonging the service life of the electric flocculation device 20.
Since flocculent aggregates generated during the operation of the electroflocculation apparatus 20 remain in the filtering member 25, the filtering member 25 is clogged by the long-term accumulation, and the mass propagation of bacteria is caused by the untimely cleaning of the impurities. Therefore, according to a further embodiment of the present invention, the laundry treating apparatus 100 further includes: and two ends of the backwash pipe 71 are respectively communicated with the purified water outlet 202 and the outlet end 122, a backwash control valve 70 for controlling the on-off of a water channel in the backwash pipe 71 is arranged on the backwash pipe 71, and the backwash control valve 70 and the water inlet control valve 50 are not opened at the same time.
Specifically, after the washing and rinsing processes are finished, the controller of the laundry treating apparatus 100 controls the water inlet control valve 50 to be closed, and the backwashing control valve 70 to be opened, so that the water in the tub 12 flows through the filtering member 25 through the backwashing control valve 70 for backwashing, and the flocculated contaminants on the filtering member 25 are washed into the electrocoagulation device 20 and finally discharged to the outside. Therefore, the flocculent aggregates with pollutants such as detergent, oil stain, suspended matters, bacteria, viruses and the like on the filter element 25 can be prevented from breeding a large amount of bacteria due to untimely cleaning, the filter element 25 can be prevented from being blocked, the operation is simple, and the filter element 25 does not need to be cleaned manually.
In some examples, the water container 22 further has a sewage outlet 203, and a sewage pipe connected to the sewage outlet 203 and a sewage control valve 90 for controlling the on/off of a water path in the sewage pipe are further provided in the housing 11. By opening the back flush control valve 70, the water in the back flush pipe 71 flushes the flocculated contaminants on the filter elements 25 into the electric flocculation apparatus 20, and by opening the blowdown control valve 90, the sewage with flocculated contaminants is finally discharged out of the laundry treatment apparatus 100 through the sewage outlet 203, so that the filter elements 25 are cleaned, and the propagation of bacteria is avoided.
In some examples, the laundry treating apparatus 100 further includes: and the water outlet pipe 61 are connected between the water inlet end 121 and the purified water outlet 202, and the water outlet pipe 61 is provided with a water outlet control valve 60.
In some examples, the laundry treating apparatus 100 further includes: and a water storage tank 80, wherein the water storage tank 80 is arranged in the housing 11 and connected between the purified water outlet 202 and the water inlet end 121, and is used for storing water discharged from the purified water outlet 202. The clean water filtered by the filter 25 can be temporarily stored in the water storage tank 80 and then enters the barrel body 12 through the water inlet end 121 for rinsing; when the volume of the water storage tank 80 is large enough, the clean water obtained after the treatment can be stored and stored, and then can be reused in the next washing procedure.
Optionally, the water storage tank 80 and the water container 22 are arranged below the barrel body 12 side by side, so that the layout is reasonable, the modularized arrangement is realized, the space below the barrel body 12 is effectively utilized, and the space utilization rate in the shell 11 is improved.
In some optional examples, the laundry treating apparatus 100 is a drum washing machine. The axis of the barrel body 12 extends along the horizontal direction, and the electric flocculation device 20 and the water storage tank 80 are both arranged below the barrel body 12, so that the space under the barrel is effectively utilized, and the space utilization rate is improved.
In other alternative examples, the laundry treating apparatus 100 is a pulsator washing machine. The electric flocculation device 20 and the water storage tank 80 are respectively arranged on two opposite sides of a motor for driving the impeller to rotate, and the layout is reasonable.
The laundry treating apparatus 100 according to an embodiment of the present invention will be described below with reference to various embodiments, taking a washing machine as an example.
As shown in fig. 1 and 2, the washing machine includes a housing 11, a tub 12, a primary filter 30, an electrocoagulation device 20, a water pump, a water storage tank 80, an inlet control valve 50, an outlet control valve 60, a backwash control valve 70, an inlet pipe 51, an outlet pipe 61, and a backwash pipe 71.
The shell 11 forms the basic shape of the washing machine, the barrel 12 is installed in the shell 11, the barrel 12 is connected with the electric flocculation device 20 through the water inlet pipe 51, the electric flocculation device 20 is composed of a water container 22, a direct current power supply 21, an anode 23 and a cathode 24, the anode 23 and the cathode 24 respectively comprise a plurality of electrode plates, the plurality of electrode plates are arranged in the water container 22 in a staggered mode, the electrode plates are connected with the direct current power supply 21, the bottom of the water container 22 is provided with a purified water outlet 202, the water storage tank 80 is respectively connected between the purified water outlet 202 and the water inlet end 121 of the barrel 12 through a water outlet pipe 61, and the water outlet control valve 60 is connected on the water outlet pipe 61 and is positioned between the water storage tank 80 and the purified water outlet 202.
After the washing process of the washing machine is finished, the water inlet control valve 50 is opened, the washing sewage is conveyed to the primary filter 30 through the water inlet pipe 51 by the water pump, textile fibers and larger solid particles contained in the washing sewage are filtered by the primary filter 30, the primarily filtered water enters the water container 22, and flows in a gap between the electrode plates of the cathode 24 and the anode 23 to obtain the electrocoagulation treatment.
In order to more effectively perform the electric flocculation treatment on the washing wastewater, the conductivity of the wastewater should be more than 200. mu.S/cm, the suspended solid content should be less than 1000mg/L, and the pH value should be in the range of 2-14, so that the washing wastewater can be directly subjected to the electric flocculation apparatus 20 without additional treatment. Because the electrode material is iron or aluminum, the alkalinity of the detergent is strong, and calcium ions, magnesium ions and carbonate ions in the used tap water are combined to generate scales such as magnesium carbonate, calcium carbonate, magnesium hydroxide and the like, the DSA electrode can be adopted to prevent corrosion and pollution. The DSA electrode is made of metal material with strong corrosion resistance (such as gold, platinum, titanium, stainless steel, etc.) as substrate and a layer of metal oxide with electrocatalytic activity is coated on the surface of the substrate. Chemical composition of coating with transition metal oxide RuO2、IrO2、SnO2、TiO2、PbO2、MnO2、Ta2O5Mainly, and then adding partial other transition metal oxide to form a mono-component or multi-component composite active oxide coating, such as RuO2-TiO2、IrO2-Ta2O5、PbO2-SnO2、MnO2-RuO2-TiO2、RuO2-IrO2-TiO2、RuO2-SnO2-TiO2、RuO2-IrO2-TiO2-PdO2、RuO2-IrO2-TiO2-SnO2And the like.
Under different pH values, the metal ions and the hydrolysis polymerization products thereof play roles of compressing double electric layers, adsorbing electric neutralization and precipitating net capture, and the aluminum or iron on the surface of the anode 23 loses electrons and is changed into Al3e+Or Fe2e+Dissolved in water and combined with OH generated during electrolysis of water-The reaction generates hydroxide colloid flocculant Al (OH)3Or Fe (OH)2The newly generated hydroxide colloid flocculant has high activity and strong adsorption capacity, and can be used for washing detergent in sewage,The pollutants of oil stain, suspended matters, bacteria, viruses and the like are combined to generate larger floccules, and the larger floccules are gathered into larger solid particles to be separated from the water body. The micro air bubbles released from the surface of the electrode accelerate the collision process of particles, and the particles float upwards and separate when the density is small, and sink and separate when the density is large, so that the washing machine is favorable for quickly removing pollutants such as detergent, oil stains, suspended matters, bacteria, viruses and the like in the washing sewage. Direct electro-oxidation of the surface of the anode 23 and Cl-Introduction of conversion to active chlorine electrooxidation has a strong oxidizing power on dissolved organic matters and detergents in water, causing a strong reduction of released nascent hydrogen.
The turbid water containing larger solid particles after the electric flocculation enters the filtering member 25, and flocculent aggregate solid particles formed by flocculation after the filtering member 25 is filtered are intercepted. After the washing and rinsing procedures are finished, the water inlet control valve 50 is closed, water in the barrel body 12 enters the filter elements 25 through the back flush control valve 70 and the water outlet control valve 60 for back flushing, flocculated pollutants are flushed into the water container 22, the pollution discharge control valve 90 is opened at the same time, sewage with the flocculated pollutants is discharged from the sewage outlet 203, then a small amount of clean tap water is put into the water container 22, pollutants in the filter elements 25 are discharged, meanwhile, the filter elements 25 are cleaned, the mass propagation of bacteria is avoided, and the next use is not influenced.
Example one
Preparing water to be treated by tap water and sodium dodecyl benzene sulfonate, wherein the content of a surfactant is 230.2mg/l, and treating under the following conditions:
treatment time: for 10min
The residual surfactant content after the treatment was 11.5 mg/l.
Example two
Preparing water to be treated by using tap water and mixed phosphate, wherein the content of the phosphate is 15.70mg/l, and treating under the following conditions:
treatment time: 15min
The residual phosphate content after the treatment was 1.24 mg/l.
EXAMPLE III
Taking certain laundry wastewater with water quality indexes of turbidity 308NTU, COD157mg/l and phosphate 9.30mg/l, and treating under the following conditions:
treatment time: 20min
The water quality after treatment is shown in Table 1.
TABLE 1 comparison table of before and after water quality treatment indexes in the third embodiment
Detecting the index Before treatment After treatment Removal Rate (%)
Turbidity (NTU) 324 5.8 98.2
COD(mg/l) 130 27.6 93.2
Phosphate (mg/l) 9.30 0.96 89.7
Fig. 3 is a graph showing the change in Chemical Oxygen Demand (COD) in the sewage before and after treatment by the electric flocculation apparatus 20. The washing sewage is the sewage after washing by three detergents, namely washing powder, laundry detergent and soap powder. As shown in FIG. 3, the chemical oxygen demand of all the sewage samples obtained before the treatment by the electric flocculation apparatus 20 exceeded 100mg/L, and the COD of any detergent sewage after the treatment by the electric flocculation apparatus 20 was reduced to 20mg/L or less.
Fig. 4 is a graph showing the change in conductivity of the wastewater before and after treatment by the electric flocculation apparatus 20. As can be seen from fig. 4, the conductivity of the wastewater tends to decrease after passing through the electric flocculation apparatus 20. The conductivity of the washing sewage depends on the concentration of solute salt contained in the washing sewage or other chemical impurities decomposed into electrolyte, and the conductivity is an important index for measuring the salt content, the ion content, the impurity content and the like of the water. The washing powder and the laundry detergent not only contain a surfactant, but also contain a large amount of inorganic salt, the surfactant can be removed by an electrocoagulation method, and a part of the inorganic salt can be remained in an aqueous solution.
Fig. 5 is a graph showing the change in the concentration of suspended solids in wastewater before and after treatment by the electric flocculation apparatus 20.
FIG. 6 is a graph showing the variation of the concentration of anionic surfactant in the wastewater before and after treatment by the electroflocculation apparatus 20, and 85-95% of the surfactant can be removed by the electroflocculation apparatus 20.
A water treatment cycle control method of a laundry treatment apparatus according to an embodiment of the second aspect of the present invention is described below.
The water treatment cycle control method of a laundry treatment apparatus according to an embodiment of the present invention includes the steps of:
s1, discharging the water in the barrel into the electric flocculation device;
s2, controlling the electric flocculation device to work so as to enable water entering the electric flocculation device to generate electric flocculation reaction;
and S3, discharging the water purified by the electric flocculation device into the barrel.
According to the water treatment circulation control method of the clothes treatment device, water discharged from the barrel body can be purified, and the purified water is conveyed into the barrel body again, so that the purified water is recycled, namely, the whole washing and rinsing process can be finished by the clothes treatment device only by feeding water from the outside once in the washing process, and therefore, the water can be recycled on the premise of not influencing the washing efficiency, and water resources are saved.
In some specific examples, the specific operation process of the laundry treatment apparatus is:
firstly, opening a water inlet control valve between the water outlet end of the barrel body and the water inlet of the electric flocculation device, and closing a back flush control valve between the water outlet end of the barrel body and the purified water outlet of the electric flocculation device, so that the water in the barrel body is discharged into the electric flocculation device.
Then, the electric flocculation device is controlled to work so that water entering the electric flocculation device is subjected to electric flocculation reaction, pollutants such as detergent, oil stain, suspended matters, bacteria, viruses and the like in the water generate larger floccules in the electric flocculation device, and the larger floccules are aggregated into larger solid particles to be separated from the water body and are discharged into the barrel after being filtered by a filter element of the electric flocculation device.
And finally, closing a water inlet control valve between the water outlet end of the barrel body and the water inlet of the electric flocculation device, opening a back flush control valve between the water outlet end of the barrel body and the purified water outlet of the electric flocculation device, opening a pollution discharge control valve on the electric flocculation device, reversely feeding water to the purified water outlet of the electric flocculation device, flushing flocculated pollutants into the electric flocculation device, and finally discharging the flocculated pollutants out of the shell through the pollution discharge control valve.
Other configurations and operations of the laundry treating apparatus according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (15)

1. A laundry treating apparatus (100), comprising:
a housing (11);
a barrel body (12), wherein the barrel body (12) is arranged in the shell body (11) and is provided with a water inlet end (121) and a water outlet end (122);
an electric flocculation device (20), wherein the electric flocculation device (20) is arranged in the shell (11) and is connected between the water inlet end (121) and the water outlet end (122) so as to purify water flowing out of the water outlet end (122);
a water container (22), said water container (22) being adapted to contain water discharged from said water outlet end (122), said water container (22) having a water inlet (201) and a purified water outlet (202), said water inlet (201) being connected to said water outlet end (122) by a water inlet tube (51);
a filter element (25), the filter element (25) being arranged at the clean water outlet (202) or upstream of the clean water outlet (202) in the direction of water flow;
and two ends of the backwashing pipe (71) are respectively communicated with the purified water outlet (202) and the water outlet end.
2. The laundry treatment apparatus (100) according to claim 1, characterized in that the electric flocculation device (20) comprises: a DC power supply (21); the water container comprises an anode (23) and a cathode (24), wherein the anode (23) is connected with the positive pole of the direct current power supply (21) and extends into the water container (22), and the cathode (24) is connected with the negative pole of the direct current power supply (21) and extends into the water container (22).
3. The laundry processing apparatus (100) according to claim 2, characterized in that the anode (23) and the cathode (24) respectively comprise a plurality of electrode plates, and the electrode plates of the anode (23) and the electrode plates of the cathode (24) are arranged alternately.
4. The laundry processing apparatus (100) according to claim 3, characterized in that, the plurality of electrode plates of the anode (23) and the plurality of electrode plates of the cathode (24) are arranged in parallel and spaced apart, and the distance between the electrode plates of any adjacently arranged anode (23) and the electrode plates of the cathode (24) is 10 mm.
5. The laundry processing apparatus (100) according to claim 2, characterized in that the anode (23) is an iron electrode or an aluminum electrode.
6. The laundry processing apparatus (100) according to claim 1 or 2, further comprising:
a water pumping device (40) for delivering water in the bucket (12) to the water container (22), the water pumping device (40) being located in the housing (11) and connected to the water inlet pipe (51);
and the water inlet control valve (50) is connected between the water pumping device (40) and the water inlet (201) so as to control the on-off of a water path between the water pumping device (40) and the water inlet (201).
7. The laundry processing apparatus (100) according to claim 6, characterized in that a primary filter (30) is connected to the water inlet pipe (51), and the primary filter (30) is located between the water outlet end (122) and the water pumping device (40).
8. The laundry processing apparatus (100) according to claim 6, wherein the backwash control valve (70) is disposed on the backwash pipe (71) for controlling the on/off of the water path in the backwash pipe (71), and the backwash control valve (70) and the water inlet control valve (50) are not opened at the same time.
9. The laundry treatment apparatus (100) according to claim 1 or 2, characterized in that the water container (22) further has a sewage outlet (203), and a sewage drain connected to the sewage outlet (203) and a sewage drain control valve (90) for controlling the on-off of a water path in the sewage drain are further provided in the housing (11).
10. The laundry processing apparatus (100) according to claim 1, further comprising: the water outlet pipe (61) is connected between the water inlet end (121) and the purified water outlet (202), and a water outlet control valve (60) is arranged on the water outlet pipe (61).
11. The laundry processing apparatus (100) according to claim 1 or 10, further comprising: a water storage tank arranged in the housing (11) and connected between the purified water outlet (202) and the water inlet end (121) for storing water discharged from the purified water outlet (202).
12. The laundry treatment apparatus (100) according to claim 11, characterized in that the storage tank and the water container (22) are arranged side by side below the tub (12).
13. A water treatment cycle control method of a laundry treating apparatus according to any one of claims 1-12, comprising the steps of:
s1, discharging the water in the barrel into the electric flocculation device;
s2, controlling the electric flocculation device to work so that the water entering the electric flocculation device is subjected to electric flocculation reaction;
and S3, discharging the water purified by the electric flocculation device into the barrel.
14. The water treatment cycle control method of a laundry treatment apparatus according to claim 13, wherein before proceeding to step S1, the water inlet control valve between the water outlet end of the tub and the water inlet of the electric flocculation apparatus is opened, and the back flush control valve between the water outlet end of the tub and the purified water outlet of the electric flocculation apparatus is closed.
15. The water treatment cycle control method of a clothes treating apparatus according to claim 13 or 14, wherein after step S3, the water inlet control valve between the water outlet end of the tub and the water inlet of the electric flocculation apparatus is closed, the back flush control valve between the water outlet end of the tub and the purified water outlet of the electric flocculation apparatus is opened, the blowdown control valve on the electric flocculation apparatus is opened, and water is reversely fed to the purified water outlet of the electric flocculation apparatus.
CN201710797117.0A 2017-09-06 2017-09-06 Clothes treatment device and water treatment circulation control method thereof Active CN109457441B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710797117.0A CN109457441B (en) 2017-09-06 2017-09-06 Clothes treatment device and water treatment circulation control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710797117.0A CN109457441B (en) 2017-09-06 2017-09-06 Clothes treatment device and water treatment circulation control method thereof

Publications (2)

Publication Number Publication Date
CN109457441A CN109457441A (en) 2019-03-12
CN109457441B true CN109457441B (en) 2021-07-20

Family

ID=65606074

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710797117.0A Active CN109457441B (en) 2017-09-06 2017-09-06 Clothes treatment device and water treatment circulation control method thereof

Country Status (1)

Country Link
CN (1) CN109457441B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1179488A (en) * 1996-10-14 1998-04-22 三星电子株式会社 Washing machine having electrolytic sewage disposal apparatus
CN2493613Y (en) * 2001-06-12 2002-05-29 重庆晨风环保工程有限公司 Forced water regenerator for washing machine
CN1580365A (en) * 2003-08-06 2005-02-16 卓科株式会社 Washer with detergent tank and softening hard water by lime
CN1635209A (en) * 2003-12-31 2005-07-06 钱光万 Detergent free wash mill capable of recycling use of water
CN1727556A (en) * 2004-07-28 2006-02-01 三洋电机株式会社 Laundry machine and reuse method of washing water
CN104372574A (en) * 2013-08-15 2015-02-25 海尔集团公司 Washing machine with circulating water treatment function and control method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1179488A (en) * 1996-10-14 1998-04-22 三星电子株式会社 Washing machine having electrolytic sewage disposal apparatus
CN2493613Y (en) * 2001-06-12 2002-05-29 重庆晨风环保工程有限公司 Forced water regenerator for washing machine
CN1580365A (en) * 2003-08-06 2005-02-16 卓科株式会社 Washer with detergent tank and softening hard water by lime
CN1635209A (en) * 2003-12-31 2005-07-06 钱光万 Detergent free wash mill capable of recycling use of water
CN1727556A (en) * 2004-07-28 2006-02-01 三洋电机株式会社 Laundry machine and reuse method of washing water
CN104372574A (en) * 2013-08-15 2015-02-25 海尔集团公司 Washing machine with circulating water treatment function and control method thereof

Also Published As

Publication number Publication date
CN109457441A (en) 2019-03-12

Similar Documents

Publication Publication Date Title
CN109457440B (en) Water treatment circulation system, control method thereof and clothes treatment device
CN208454729U (en) A kind of wastewater from car washer treatment process system
JP3014658B2 (en) Washing machine with electrolyzed sewage purification device
CN102295373A (en) Papermaking wastewater cycling and utilizing apparatus and method based on electrochemical and electrodialysis technologies
CN110983722A (en) Novel environment-friendly washing device without detergent and using method thereof
WO2013156003A1 (en) New nano catalyst electrolysis device
CN111704281A (en) Device and method for quickly treating and recycling car washing wastewater
CN209957593U (en) Integrated efficient sewage membrane treatment equipment
KR20090047641A (en) Wastewater treatment device by electroly-zation
CN208933147U (en) Integrated electric flocculation carwash waste water processing unit
CN109133441A (en) ECFF type integration electric flocculation carwash waste water processing unit
KR100630279B1 (en) A water treatment equipment
CN109457441B (en) Clothes treatment device and water treatment circulation control method thereof
CN111762851A (en) Iron-carbon micro-electrolysis coupling electrochemical water treatment device and treatment method
AU2022378146B2 (en) Fenton process and ceramic membrane filtering-integrated sewage treatment unit
CN110510710A (en) Electric flocculation and electrocatalytic oxidation integrated waste-water treater
CN212924728U (en) Printing and dyeing wastewater pretreatment device
CN211872334U (en) Novel environment-friendly washing device without detergent
CN209835851U (en) Waste cutting fluid purifying device
JP2006224064A (en) Wastewater purification system
CN113443758A (en) Full-quantitative pretreatment device, treatment system and treatment method for landfill leachate
CN110924058B (en) Self-cleaning control method for water treatment device and washing machine
CN110872146A (en) Sewage treatment device and clothes treatment system
CN111573972A (en) Grinding ultrasonic cleaning wastewater zero-discharge recycling or standard-reaching treatment system and process
KR200229123Y1 (en) Electrolytic purification system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right

Effective date of registration: 20190805

Address after: 214028 No. 18 Changjiang South Road, Wuxi National High-tech Development Zone, Jiangsu Province

Applicant after: Wuxi Swan Electrical Appliances Co., Ltd.

Address before: 214028 Wuxi Changjiang Road, New District, Jiangsu, No. 18

Applicant before: Wuxi Xiaotianer Co., Ltd.

TA01 Transfer of patent application right
GR01 Patent grant
GR01 Patent grant