CN217398592U - Waste liquid separation device and steam cleaning equipment capable of recycling waste liquid - Google Patents

Abstract

The utility model discloses a waste liquid separator, it includes one or more in following module: the first filtering module is used for filtering large-particle sediments in the waste liquid, the oil-liquid separation module is used for separating oil stains and liquid, and the second filtering module is used for filtering suspended substances in the waste liquid. The utility model discloses still disclose a steam cleaning equipment who contains this waste liquid separator, but waste liquid cyclic utilization, wherein, wash the water inlet intercommunication of module in waste liquid separator's the delivery port and the steam cleaning equipment for the liquid that has handled through waste liquid separator can flow into and wash the module and carry out next round of fumigation in order to form steam.

Description

Waste liquid separation device and steam cleaning equipment capable of recycling waste liquid

Technical Field

The utility model relates to a clean technical field, in particular to but waste liquid separator and waste liquid cyclic utilization's steam cleaning equipment.

Background

With the adjustment of economic structures and the change of urban development planning, some coking enterprises stop production and move, and a large amount of coking sites are generated. There are often structures in the coking plant with the potential for modification and reuse that can be retained as industrial legacy. However, these structures have a large amount of coal, tar, and the like left on the surface thereof, which are produced in early production and processing, and if the structures are directly put into use, they are likely to be dangerous to the environment and public health, and therefore, it is necessary to take measures to clean the structures.

At present, the cleaning of the surface of the structure mainly adopts a high-temperature high-pressure steam cleaning technology, and the high-temperature steam sprayed by equipment is utilized to increase the solubility of pollutants attached to the surface of the structure, so that some organic matters with high melting points and strong viscosity are gradually fluidized under the high-temperature condition, even reach a sublimation and decomposition state, reduce the adhesive force of the dirt and the surface of the structure, and are separated from the surface of the structure, thereby achieving the purpose of removing the pollutants.

However, for structures of coking fields, such as oil storage tanks, primary coolers, pipelines and the like, organic matters such as benzopyrene and petroleum hydrocarbon are usually left in the structures, the organic matters are gradually fluidized after being fumigated by high-temperature high-pressure steam, and are mixed with water vapor after being liquefied to form mixed liquid, and the mixed liquid is hazardous waste which can pollute water and soil and destroy the environment. Generally, the mixed liquid needs to be transported to a professional company with treatment qualification for hazardous waste treatment, and the treatment and transportation costs are high. How to reduce the amount of hazardous waste generated is critical to reducing the cost of cleaning the surface of the structure.

SUMMERY OF THE UTILITY MODEL

For solving part or all problems among the prior art, the utility model discloses at first provide a waste liquid separator, it includes one or more in following module:

the first filtering module is used for removing slag to filter large-particle sediments in the waste liquid;

the oil-liquid separation module is used for separating oil stains from liquid; and

and the second filtering module is used for filtering suspended substances in the waste liquid.

Further, the first filtration module includes a first cavity, the first cavity including:

the first water inlet is formed in the first side of the first cavity, and waste liquid to be treated flows into the first cavity from the first water inlet; and

and the first water outlet is arranged on the second side of the first cavity and is higher than the first water inlet so as to discharge liquid subjected to slag removal.

Further, the oil-liquid separation module comprises a second cavity, and the second cavity comprises:

the waste liquid to be treated flows into the second cavity through the second water inlet;

the second water outlet is arranged at the bottom of the second cavity and used for discharging the deoiled liquid; the oil outlet is arranged at the top of the second cavity and used for discharging the separated oil stains; and

and the separation structure is arranged between the second water outlet and the oil outlet and used for oil-liquid separation.

Further, the separation structure comprises a plurality of obliquely arranged stainless steel tubes.

Further, the second filtration module includes a third cavity, the third cavity including:

the waste liquid to be treated flows into the third cavity through the third water inlet;

the third water outlet is arranged at the first side of the third cavity to discharge the liquid after standing and precipitating; and

and the sludge discharge hole is arranged at the bottom of the third cavity to discharge precipitated suspended substances.

Further, the waste liquid separating device further comprises a sewage pump connected to the water inlet of the waste liquid separating device.

Further, the waste liquid separating device further comprises a drainage pump connected to a water outlet of the waste liquid separating device.

Further, a water inlet of the oil-liquid separation module is communicated with a water outlet of the first filtering module; and/or

And the water inlet of the second filtering module is communicated with the water outlet of the oil-liquid separation module.

Based on as before the waste liquid separator, the utility model discloses but still provide a waste liquid cyclic utilization's steam cleaning equipment, it includes:

a cleaning module for generating and discharging steam to clean the structure; and

the water outlet of the waste liquid separating device is communicated with the water inlet of the cleaning module.

Furthermore, the steam cleaning equipment also comprises a first electromagnetic valve which is arranged at the water inlet of the cleaning module, wherein the first electromagnetic valve comprises two paths, one path is connected with a tap water pipeline, and the other path is communicated with the water outlet of the waste liquid separation device.

Furthermore, the water outlet of the waste liquid separation device is communicated with a sewage discharge port of the cleaning module, and a passage connected with the water outlet is controlled through a second electromagnetic valve.

The utility model provides a pair of but waste liquid separator and waste liquid cyclic utilization's steam cleaning equipment, after a stage fumigation, the outside sewage pump of accessible takes the waste liquid of bottom stockpile in the structure out, side by side to in the waste liquid separator, through multiple filtration separation module, at first with oily pollutant and the separation from top to bottom in the mixed liquid after the sediment, the greasy dirt is discharged and is handled separately, the sewage is arranged to the lower floor and is stood the sedimentation treatment, the liquid after the processing can further be carried to in the cleaning module, heat the water after the processing, smoke once more after heating to setting for the temperature, carry out above-mentioned treatment step once more after the fumigation, with this waste liquid after will fumigating carries out cyclic recovery and utilization. The equipment can be recycled with the hazardous waste liquid centralized treatment after fumigation, reduces the generation amount of hazardous waste in the repeated fumigation process, not only can realize environmental protection, but also can reduce the hazardous waste treatment cost, save the loss, save energy and reduce emission.

Drawings

To further clarify the above and other advantages and features of various embodiments of the present invention, a more particular description of various embodiments of the invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. In the drawings, the same or corresponding parts will be denoted by the same or similar reference numerals for clarity.

Fig. 1 is a schematic structural view of a waste liquid separator according to an embodiment of the present invention; and

fig. 2 shows a schematic structural diagram of a steam cleaning device capable of recycling waste liquid according to an embodiment of the present invention.

Detailed Description

The invention will be further elucidated with reference to the drawings in conjunction with the detailed description. It should be noted that the components in the figures may be shown exaggerated for illustrative purposes and are not necessarily to scale. In the figures, identical or functionally identical components are provided with the same reference symbols.

In the present invention, "disposed on …", "disposed above …" and "disposed over …" do not exclude the presence of an intermediate therebetween, unless otherwise specified. Further, "disposed on or above …" merely indicates the relative positional relationship between two components, and may also be converted to "disposed below or below …" and vice versa in certain cases, such as after reversing the product direction.

In the present invention, the embodiments are only intended to illustrate the aspects of the present invention, and should not be construed as limiting.

In the present application, the terms "a" and "an" do not exclude the presence of a plurality of elements, unless otherwise indicated.

It is further noted herein that in embodiments of the present invention, only a portion of the components or assemblies may be shown for clarity and simplicity, but those skilled in the art will appreciate that the components or assemblies may be added as needed for specific scenarios, given the teachings of the present invention.

It is also to be noted that, within the scope of the present invention, the expressions "identical", "equal", etc., do not mean that the two values are absolutely equal, but allow a certain reasonable error, that is, the expressions also cover "substantially identical", "substantially equal". By analogy, in the present disclosure, the terms "perpendicular to", "parallel to", and the like in the table direction also cover the meaning of "substantially perpendicular to", "substantially parallel to".

In the present invention, the term "module" refers to a physical hardware module, which is constituted, for example, by a corresponding circuit and mechanical structure.

In the present invention, the term "sludge" refers to a solid that settles to the bottom due to its density being greater than that of the waste liquid (water being the main component); the term "oil stain" means a mixture liquid whose main component is an oil substance, which is not dissolved by the waste liquid and floats on the surface of the waste liquid because of having a density lower than that of the waste liquid; the term "suspended substance" refers to a solid or fluid suspended in the waste liquid, and such "suspended substance" generally has a density close to that of the waste liquid and cannot be dissolved by the waste liquid, and thus is suspended in the waste liquid.

In order to carry out recycle to the mixed waste liquid that produces after can washing through high temperature high pressure steam to structure surface organic matter, the utility model provides a waste liquid separator and adopted waste liquid separator, but and then waste liquid cyclic utilization's steam cleaning equipment, it is through using waste liquid separator will fumigate impurity and water separation such as greasy dirt, waste residue in the waste liquid that the back produced, then send into steam cleaning equipment heating once more with the water after handling to form steam and carry out the next round of fumigation to the structure, form circulation recycle with this.

The waste liquid separation device comprises a water inlet and a water outlet, wherein mixed waste liquid generated after organic substances on the surface of a structure are cleaned by high-temperature and high-pressure steam flows into the waste liquid separation device through the water inlet for filtration and separation, and the treated liquid is conveyed into a cleaning module of steam cleaning equipment through the water outlet. In order to improve the efficiency, in an embodiment of the present invention, a sewage pump 001 may be further disposed at the water inlet, and the sewage pump may extract the mixed waste liquid condensed in the structure after the structure is fumigated, and discharge the mixed waste liquid into the waste liquid separation device. In another embodiment of the present invention, a drainage pump 002 may be disposed at the water outlet to draw out the liquid treated by the waste liquid separator to the cleaning module.

In order to fully filter or separate large-particle sediments, oil stains and suspended substances in the mixed waste liquid, the waste liquid separating device is provided with multiple filtering and separating modules. In different embodiments of the present invention, the number and types of filtration and separation modules included therein may be the same or different.

The invention will be further elucidated with reference to the drawings in conjunction with the detailed description.

Fig. 1 shows a schematic structural diagram of a waste liquid separation device according to an embodiment of the present invention. In the embodiment shown in fig. 1, the waste liquid separation apparatus comprises three filtration and separation modules: the device comprises a first filtering module, an oil-liquid separation module and a second filtering module. It should be understood that in other embodiments of the present invention, only one or two of the three filtration and separation modules may be included.

As shown in fig. 1, the first filtering module includes a first cavity 101, which is mainly used for removing slag, and may be also referred to as a slag removal tank, so as to filter large-particle sediments in the waste liquid. As shown in fig. 1, the first chamber 101 includes a first water inlet 111 and a first water outlet 112. Wherein, first water inlet 111 and first water outlet 112 set up respectively in the different sides of first cavity 101, and in order to avoid not having the direct follow of the waste liquid of sediment first water outlet 112 flows out, in the embodiment of the utility model, the position of first water outlet 112 should be higher than first water inlet 111. In practical application, the waste liquid to be treated flows into the first cavity 101 through the first water inlet 111, the deslagging tank can intercept and filter large-particle sediments in the waste liquid, and the liquid after deslagging flows into the next-stage filtering and separating module or the cleaning module through the first water outlet 112.

The oil separation module includes a second chamber 102, which is mainly used to separate oil from liquid. As shown in fig. 1, the second cavity 102 includes a second water inlet 121, a second water outlet 122, an oil outlet 123, and a separation structure 124. Since the density of the oil is usually less than that of water, in order to better perform oil-liquid separation, in the embodiment of the present invention, the oil outlet 123 is preferably disposed at the upper half portion, for example, the top portion, of the second cavity 102, so as to discharge the separated oil, and the second water outlet 122 is preferably disposed at the lower half portion, for example, the bottom portion, of the second cavity 102, so as to discharge the liquid after oil removal to the next filtering and separating module or the cleaning module. The separation structure is arranged between the second water outlet and the oil outlet and used for oil-liquid separation. In practical application, the waste liquid to be treated flows into the second cavity 102 through the second water inlet 121, after being filtered by the separation structure, the floatable oil is separated to the liquid level and discharged along the oil outlet 123, and the liquid after oil-water separation is discharged to the next stage of filtering and separating module or cleaning module. In an embodiment of the present invention, the separation structure 124 includes a plurality of stainless steel pipes disposed in an inclined manner, and the stainless steel pipes may be arranged in parallel, as shown in fig. 1, one end of the stainless steel pipe is disposed at the second water inlet 121, and the other end is disposed above the second water outlet 122. In the embodiment shown in fig. 1, the oil-liquid separation module is disposed at the next stage of the first filter module, so that the oil-liquid separation module may be disposed at a side of the first filter module where the first water outlet is disposed, and the first water outlet may be used as the second water inlet of the oil-liquid separation module.

The second filter module comprises a third cavity 103, which is mainly used for filtering suspended substances in waste liquid. As shown in fig. 1, the third cavity 101 includes a third water inlet 131, a third water outlet 132 and a mud discharging hole. Wherein, the third water inlet 131 and the third water outlet 132 are respectively disposed on different surfaces of the third cavity 103, and in order to avoid the incompletely filtered waste liquid flowing out from the third water outlet 132, in an embodiment of the present invention, the third water outlet 132 is preferably disposed on a side surface of the third cavity 103, and has a certain height from the bottom thereof. In practical applications, the waste liquid to be treated flows into the third cavity 103 through the third water inlet 131 for further precipitation treatment, the treated liquid flows into the next filtering and separating module or the cleaning module through the third water outlet 132, and the precipitated substances are discharged through the sludge discharge hole. In an embodiment of the present invention, the bottom of the third cavity 103 may be provided with a pipe chute 133, for example, to filter the suspended material, so that the suspended material is deposited on the bottom of the third cavity 103 and can be further discharged through the mud discharging hole provided at the bottom of the second filtering module. In the embodiment shown in fig. 1, the second filtering module is disposed at the next stage of the oil-liquid separating module, so that the first filtering module can be disposed at the side of the oil-liquid separating module where the second water outlet is disposed, i.e., below the oil-liquid separating module, and the second water outlet can be used as the third water inlet of the second filtering module.

Fig. 2 shows a schematic structural diagram of a steam cleaning device capable of recycling waste liquid according to an embodiment of the present invention. The steam cleaning device shown in fig. 2 is provided with the waste liquid separating device, specifically, a water outlet of the waste liquid separating device is communicated with a water inlet of a cleaning module of the steam cleaning device, so that the liquid treated by the waste liquid separating device can flow into the cleaning module to form steam for the next round of fumigation.

As shown in fig. 2, a steam cleaning apparatus capable of recycling waste liquid includes a cleaning module and a waste liquid separating device 100. The cleaning module comprises a shell 201, and a water inlet 211 and a steam outlet 212 are arranged on the shell 201. In one embodiment of the present invention, the housing 201 is made of stainless steel material and coated with a heat insulating layer 202 on its surface.

The water inlet 211 is connected to an external water supply device and a water outlet of a last stage filtering and separating module of the waste liquid separating device, so that water can be injected into the housing 101 through a tap water pipe network, and the liquid treated by the waste liquid separating device can be injected into the housing 101. In an embodiment of the present invention, in order to select the water inlet channel of the water inlet 211, the first electromagnetic valve 204 may be disposed at the water inlet 211, the first electromagnetic valve 204 includes two paths, wherein one path is connected to the tap water line, and the other path is communicated with the water outlet of the last stage filtering and separating module of the waste liquid separating device.

The interior of the housing may be provided with one or more storage tanks communicating with each other, for example, and the water inlet 211 communicates with the storage tank to inject water into the storage tank. When steam cleaning is required, water in the water storage tank is gasified by raising the temperature to form steam, and the steam is discharged through the steam outlet 212. In an embodiment of the present invention, the water inlet 211 is disposed at the top of the housing 201. In practical application, the amount of water inside the housing cannot be too much or too little, if the amount of water overflows the housing, a short circuit of the steam cleaning device may be caused, and the device may be damaged, and if the amount of water is too low, dry burning may occur, and the device may also be damaged, based on this, in an embodiment of the present invention, a liquid level meter 203 is further disposed at the housing 201 for real-time monitoring of the water level inside the housing 201, and the first electromagnetic valve 204 is controlled according to the monitoring result of the liquid level meter 203, for example, when the water level is lower than a first preset water level, the first electromagnetic valve 204 is opened to a tap water pipeline, tap water is input into the housing to avoid dry burning, when the water level reaches a second preset water level, heating is started to form steam, at this time, tap water is continuously input into the housing, when the water level reaches a third preset water level, the first solenoid valve 204 is closed and water supply is stopped to prevent water overflow. The utility model discloses an in the embodiment, the level gauge of bikini has been adopted, and it includes three water level probe, corresponds to first preset water level, second preset water level and third preset water level respectively, the level gauge is the communicating pipe of a U type, based on the design of linker principle, and its one end rises into inside the casing, the other end is used for the reading, three water level probe is located the reading end.

In an embodiment of the present invention, the water in the housing 201 is heated and gasified by a heating pipe, which is a heating coil spirally wound and disposed inside the housing, for example, it may be disposed around the water storage tank, and for example, it may be disposed below the water storage tank.

The steam outlet 212 is used for discharging steam, and is preferably disposed at the top of the housing 201. In order to control the amount of steam entering the interior of the structure to achieve the target temperature, in one embodiment of the present invention, an adjusting valve 213 is provided at the steam outlet 212, and the amount of steam at the steam outlet can be controlled by the adjusting valve 213.

Because water can make in gasification the inside pressure of casing constantly rises, in order to avoid the too big potential safety hazard that causes of pressure the utility model discloses an embodiment, still be provided with manometer 231 on the casing 201, it is used for real time monitoring the inside pressure of casing, simultaneously, still be provided with pressure controller 232 and relief valve 233, be used for adjusting the inside pressure of casing, particularly, work as when the inside pressure of casing is greater than first default, through pressure controller 232 control relief valve 233 opens, carries out the pressure release to guarantee the safe operation of equipment.

In an embodiment of the present invention, the cleaning module further comprises a drain outlet 214 disposed at the bottom of the housing for discharging the remaining water stored in the housing after the steam cleaning is finished. The water outlet of the last stage filtering and separating module of the waste liquid separating device can be communicated with the sewage outlet 214, and the passage connected with the water outlet is controlled to be the sewage outlet 214 or the water inlet 211 through the second electromagnetic valve 205. Specifically, if the next round of fumigation is required, the second electromagnetic valve 205 is opened to the water inlet 211 so that the liquid treated by the waste liquid separation module flows into the housing 201, and if the fumigation is finished, the second electromagnetic valve 205 is opened to the sewage outlet 214 so that the liquid treated by the waste liquid separation module is discharged out of the apparatus together with the liquid in the village in the housing.

Cleaning of a structure surface using a steam cleaning apparatus as described above may include the steps of:

firstly, before starting the equipment, basic parameters such as fumigation duration, temperature and pressure of steam which can be discharged from the interior of a shell of a cleaning module and the like need to be preset;

secondly, starting the equipment, injecting water into the shell through a tap water pipeline after the equipment is started, monitoring the water quantity in the shell through a liquid level meter, starting a heater for heating when the water quantity reaches a second preset water level to form high-temperature high-pressure steam, monitoring the water level in real time in the process, and controlling the opening or closing of a water inlet according to the water level to avoid overhigh or overlow water level, simultaneously monitoring the pressure in the shell in real time through a pressure meter, and controlling a safety valve to open and release pressure through a pressure controller once the internal pressure is overhigh;

then, after the pressure and the temperature inside the shell reach preset values, opening a regulating valve at a steam outlet, and starting to inject high-temperature and high-pressure steam into the structure;

next, when fumigation reaches the settlement time, utilize the sewage pump to discharge into waste liquid separator with the inside waste liquid that condenses after fumigating of structures, the waste liquid at first flows into the device upper strata, through first filtration module with the interception of large granule dregs filtration, the waste liquid after the filtration is after the layer upon layer filtration through the stainless steel pipe chute, with greasy dirt and liquid separation, the greasy dirt gathering of after-separating is at the top of second cavity, along with the continuous increase of waste liquid, the greasy dirt also gathers thereupon and increases, and outside along oil-out eduction gear, liquid after the deoiling then discharges the lower floor and continues the sediment of stewing, deposit less suspended material in the device bottom, and collect the discharge by the bottom mud pipe, the liquid after the sediment of stewing is outside the third delivery port eduction gear. It should be understood that in other embodiments of the present invention, the process steps are slightly different when different numbers or types of filtering and separating devices are included;

next, when the structure is normally fumigated, opening a passage flowing to a water inlet of the cleaning module through the second electromagnetic valve, pumping out liquid through a drainage pump, discharging the liquid into a shell of the cleaning module through the first electromagnetic valve, and continuously heating the liquid, and performing the next round of fumigation when the heating temperature is reached so as to recycle waste liquid; and

and finally, after the structure fumigation is finished, the steam cleaning equipment stops injecting steam, and the electric heater stops heating. At this time, the waste liquid inside the structure is extracted and discharged into a waste liquid separator to be subjected to the above-described waste liquid treatment. At the moment, the second electromagnetic valve adjusts the open circuit to the passage of the sewage draining outlet, the waste liquid is discharged out of the equipment together with the waste liquid accumulated in the shell through the sewage draining outlet, and the fumigation treatment is finished.

It can be seen, the utility model provides a pair of but waste liquid cyclic utilization's steam cleaning equipment, after a stage fumigation, the outside sewage pump of accessible takes the waste liquid of bottom deposit in with the structure out, side by side to in the waste liquid separator, through multiple filtration separation module, at first oily pollutant and the separation from top to bottom in the mixed liquid after the sediment, the greasy dirt is discharged and is handled separately, the sewage is arranged to the lower floor and is stood the sedimentation treatment, liquid after the processing can further be carried to in the cleaning module, heat the water after the processing, smoke once more after heating to the settlement temperature, carry out above-mentioned treatment step once more after smoking, with this waste liquid after will fumigating carry out cyclic recovery and utilization. The equipment can be recycled with the hazardous waste liquid centralized treatment after fumigation, reduces the generation amount of hazardous waste in the repeated fumigation process, not only can realize environmental protection, but also can reduce the hazardous waste treatment cost, save the loss, save energy and reduce emission.

While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. It will be apparent to persons skilled in the relevant art that various combinations, modifications, and changes can be made thereto without departing from the spirit and scope of the invention. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims (11)

1. A waste liquid separation device, comprising one or more of the following modules:

a first filtration module configured to filter sediments in the waste liquid;

an oil separation module configured to separate oil from liquid in the waste liquid; and

a second filtration module configured to filter suspended substances in the waste liquid.

2. The waste liquid separation device of claim 1, wherein the first filter module comprises a first cavity comprising:

the first water inlet is formed in the first side of the first cavity, and waste liquid to be treated flows into the first cavity from the first water inlet; and

and the first water outlet is arranged on the second side of the first cavity and is higher than the first water inlet so as to discharge liquid subjected to slag removal.

3. The effluent separation unit of claim 1, wherein said oil separation module comprises a second chamber, said second chamber comprising:

a second water inlet through which waste liquid to be treated flows into the second chamber;

the second water outlet is arranged at the bottom of the second cavity and used for discharging the deoiled liquid;

the oil outlet is arranged at the top of the second cavity and used for discharging the separated oil stains; and

and the separation structure is arranged between the second water outlet and the oil outlet and is configured to separate oil from liquid.

4. The waste liquid separation device of claim 3, wherein the separation structure comprises a plurality of obliquely disposed stainless steel tubes.

5. The waste liquid separation device of claim 1, wherein the second filter module comprises a third cavity comprising:

the waste liquid to be treated flows into the third cavity through the third water inlet;

the third water outlet is arranged at the first side of the third cavity to discharge the liquid after standing and precipitating; and

and the sludge discharge hole is arranged at the bottom of the third cavity to discharge precipitated suspended substances.

6. The liquid waste separation device of claim 1, further comprising a sewage pump connected to the water inlet of the liquid waste separation device.

7. The effluent separation system of claim 1, wherein said second filtration module further comprises a drain pump connected to a water outlet of said effluent separation system.

8. The waste liquid separator according to claim 1, wherein the water inlet of the oil-liquid separation module is communicated with the water outlet of the first filtering module; and/or

And the water inlet of the second filtering module is communicated with the water outlet of the oil-liquid separation module.

9. A steam cleaning equipment capable of recycling waste liquid is characterized by comprising:

a cleaning module configured to generate and exhaust steam to clean a structure; and

the effluent separation unit as claimed in any one of claims 1 to 8, wherein the water outlet is in communication with the water inlet of the cleaning module, such that liquid treated by the effluent separation unit can flow into the cleaning module to form steam for the next round of fumigation.

10. The steam cleaning apparatus of claim 9, further comprising a first solenoid valve disposed at the water inlet of the cleaning module, wherein the first solenoid valve comprises two paths, one path being connected to the tap water line and the other path being connected to the water outlet of the waste liquid separator.

11. The steam cleaning apparatus as claimed in claim 9, wherein the water outlet of the waste liquid separating means is further communicated with a drain outlet of the cleaning module, and a path to which the water outlet is connected is selected by a second solenoid valve, wherein the path includes a path communicated with the water inlet of the cleaning module and a path communicated with the drain outlet.

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