Waste water treatment system combined with waste heat utilization technology

Abstract

The invention belongs to the technical field of waste water treatment, and relates to a waste heat utilization technology-combined waste water treatment system, which comprises a heat exchanger for exchanging heat between low-temperature waste heat gas and a heat exchange medium, a waste water treatment device, a solid-liquid separator, a condenser and a vacuum pump, a filter screen, a flow guide plate and a liquid storage tank are arranged in the shell, the filter screen and the flow guide plate divide an inner cavity of the shell into a filter area, a flow guide area and a liquid storage area from top to bottom, the liquid storage tank is located in the liquid storage area, the vacuum pump is communicated with the filter area, waste water is input into the filter area through a water inlet, and the liquid storage tank is communicated with the vacuum pump. And the top of the filtering area is respectively connected to the vacuum pump and the condenser through air pipes. According to the invention, the evaporation treatment effect that wastewater can be rapidly evaporated at a relatively low temperature is realized, and meanwhile, the filter screen structure is flushed and maintained by utilizing the back-flushing effect of the wastewater during liquid spraying evaporation.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a wastewater treatment system combined with waste heat utilization technology. Background Art

[0002] In wastewater treatment technology, the evaporation process used in the prior art consumes a lot of heat energy, and if efficiency is to be improved, the temperature requirement is high, which leads to high energy consumption and the inability to utilize low-temperature waste heat. The prior art has a technology that disperses liquid spray into droplets to accelerate evaporation, but although this type of technology improves evaporation efficiency and reduces energy consumption to a certain extent, it is necessary to remove solid impurities in the liquid, so filtering and impurity removal treatment must be performed, which increases the process steps and requires regular replacement and maintenance of the filter screen in the filtration device, affecting the treatment efficiency. At the same time, this technology cannot solve the problem of not being able to utilize low-temperature waste heat. Summary of the invention

[0003] The purpose of the present invention is to provide a wastewater treatment system combined with waste heat utilization technology to solve the technical problems that when the prior art uses liquid spray evaporation for evaporation treatment, the filtration device requires frequent maintenance and cannot effectively utilize low-temperature waste heat in heating.

[0004] The wastewater treatment system combined with waste heat utilization technology comprises a heat exchanger for exchanging heat between low-temperature waste heat gas and heat exchange medium, a wastewater treatment device, a solid-liquid separator, a condenser and a vacuum pump. The wastewater treatment device comprises a shell, a filter screen, a guide plate and a liquid storage tank are arranged in the shell, the filter screen and the guide plate separate the inner cavity of the shell into a filter area, a guide area and a liquid storage area from top to bottom, the liquid storage tank is located in the liquid storage area, the vacuum pump is connected to the filter area, the filter area inputs wastewater through the water inlet, and the top of the filter area is also connected to the vacuum pump and the condenser through an air pipe. Condenser, a through hole for allowing liquid to flow into the liquid storage tank is provided at the bottom of the guide plate, a lifting and lowering sealing plate is provided between the guide plate and the liquid storage tank, and the through hole is closed when the sealing plate rises, and a dispersed spray structure is provided below the center of the filter screen; the spray direction of the dispersed spray structure is toward the filter screen, and is used to flush the solid impurities on the filter screen to the concentration tank outside the filter screen, and the discharge port on the side of the concentration tank is connected to the solid-liquid separator through a pipeline, and a spray pump and a heating coil connected to the heat exchanger are provided at the bottom of the liquid storage tank, and the spray pump is connected to the nozzle of the dispersed spray structure through a water pipe.

[0005] Preferably, the outer edge of the filter is mounted on a conical elastic mounting plate, the outer edge of the conical elastic mounting plate is fixed to the inner edge of a concentration tank, the concentration tank is annular and located at the bottom of the filtration area; the bottom periphery of the filter is connected to the top of the sealing plate through a support plate, and the support plate passes through the through opening.

[0006] Preferably, in the filtering state, the sealing plate and the filter screen descend together, and the inner edge of the conical elastic mounting plate bends downward to form a funnel-shaped conical surface with an upper circular edge larger than a lower circular edge, and the wastewater entering the filtration area is guided to the filter screen by the funnel-shaped conical surface; in the evaporation state, the sealing plate and the filter screen rise together, the sealing plate seals the through port, and the inner edge of the conical elastic mounting plate bends upward to form a conical surface with an upper circular edge smaller than a lower circular edge, and the inner edge of the conical elastic mounting plate is higher than the bottom of the concentration tank.

[0007] Preferably, the dispersed liquid spray structure includes a plurality of flushing nozzles, a nozzle base and a rotating connecting piece, the flushing nozzle faces obliquely upward, and the plurality of flushing nozzles are circumferentially installed on the bottom of the nozzle base, the fixed part of the flushing nozzle rotating connecting piece is provided with an inlet connected to the fuel injection pump, and the rotating part of the rotating connecting piece is provided with outlets respectively connected to each flushing nozzle, and the projection of the direction of the flushing nozzle on the horizontal plane forms a certain angle with the radial direction of the filter.

[0008] Preferably, the guide plate includes an inner cone shell portion and an outer cone shell portion, the upper surface of the inner cone shell portion is a cone surface in which the upper circular edge is smaller than the lower circular edge, the upper surface of the outer cone shell portion is a cone surface in which the upper circular edge is larger than the lower circular edge, and the bottom of the guide plate connects the lower circular edges of the inner cone shell portion and the outer cone shell portion.

[0009] Preferably, the opening on the guide plate is arc-shaped and arranged circumferentially along its own extension direction, the sealing plate is annular and corresponds to the shape and size of the opening, and a sealing ring is provided on the top of the sealing plate.

[0010] Preferably, the sealing plate is installed at the output end of a vertically arranged electric cylinder, the electric cylinder is installed below the bottom of the liquid storage tank, and the output end passes through the bottom of the liquid storage tank.

[0011] Preferably, an exhaust fan is provided at the top of the filter area, and the exhaust fan is arranged at the inlet of the air pipe connected to the condenser.

[0012] The advantages of the present invention are that the present invention realizes the evaporation treatment effect of allowing wastewater to evaporate quickly at a relatively low temperature by forming a low-pressure environment and adopting a dispersed spraying wastewater method. In this way, the evaporation treatment of wastewater can be realized by utilizing low-temperature waste heat flue gas, and the evaporation treatment efficiency can still be realized quickly and efficiently at a relatively low temperature. On the other hand, the use of liquid spraying dispersed evaporation requires that solid impurities be removed from the wastewater before the liquid spraying. The present solution utilizes the method of combining the filtering structure with the evaporation equipment, and not only utilizes the recoil effect of the wastewater during the liquid spraying evaporation to realize the flushing and maintenance of the filter structure, but also realizes the transformation of the two treatment states of filtering and evaporation by the transformation of the flushing direction and the filter and its mounting structure. The structure of the conical elastic mounting plate also satisfies the effect that the liquid is filtered by the filter in the filtering state and the concentrated liquid and solid impurities are gathered in the concentration tank outside the filter in the evaporation state. This allows the concentrated liquid to be discharged without affecting the wastewater in the liquid storage tank while evaporating, and also brings out the solid impurities in the equipment, reducing the frequency of cleaning solid impurities in the equipment and reducing maintenance costs. The method of heating first, then reducing the pressure, and then spraying liquid for evaporation can not only ensure a stable heating effect and high evaporation efficiency, but also avoid the problem of re-contamination of impurities in the flue gas when the flue gas and liquid droplets are directly contacted to achieve heating and evaporation in the prior art. There is no need to purify the flue gas from harmful gases and smoke before heat exchange. The flue gas can be directly recycled through the heat exchanger for waste heat, which reduces heat loss during flue gas purification and can better utilize waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a wastewater treatment system combined with waste heat utilization technology of the present invention.

[0014] Figure 2 for Figure 1 Structural schematic diagram of the wastewater treatment device in the structure shown.

[0015] Figure 3 for Figure 2 A cross-sectional view of the structure shown in the AA direction.

[0016] Figure 4 for Figure 2 Schematic diagram of the internal structure of the structure shown.

[0017] Figure 5 for Figure 2 Structural schematic diagram of the dispersed spray structure in the structure shown.

[0018] The marks in the accompanying drawings are: 1. wastewater treatment device, 101. shell, 102. support frame, 103. electric cylinder, 104. steam outlet, 105. exhaust fan, 106. exhaust port, 107. water inlet, 108. drain port, 109. sealing plate, 110. water pipe, 111. filtration area, 112. diversion area, 113. liquid storage tank, 114. guide plate, 115. dispersed spray structure, 1151. flushing nozzle, 1152. nozzle base, 1153. rotating connector, 116. filter screen, 117. spray pump, 118. concentration tank, 119. through port, 120. support plate, 121. conical elastic mounting plate, 122. heating coil, 2. heat exchanger, 3. solid-liquid separator, 4. condenser, 5. vacuum pump, 6. chimney. DETAILED DESCRIPTION

[0019] The specific implementation modes of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0020] like Figure 1-5 As shown, the present invention provides a wastewater treatment system combined with waste heat utilization technology, including a heat exchanger 2 for exchanging heat between low-temperature waste heat gas and a heat exchange medium, a wastewater treatment device 1 for filtering and evaporating wastewater, a solid-liquid separator 3 for separating solid impurities from concentrated liquid, a condenser 4 for condensing steam and a vacuum pump 5, the wastewater treatment device 1 includes a shell 101, a filter screen 116, a guide plate 114 and a liquid storage tank 113 are arranged in the shell 101, and the filter screen 116 and the guide plate 114 divide the inner cavity of the shell 101 into a filtering area 111, a guide area 112 and a liquid storage tank 113 from top to bottom. Area 112 and a liquid storage area, the liquid storage tank 113 is located in the liquid storage area, the vacuum pump 5 is connected to the filtration area 111, the filtration area 111 inputs wastewater through the water inlet 107, the top of the filtration area 111 is also connected to the vacuum pump 5 and the condenser 4 respectively through an air pipe, the bottom of the guide plate 114 is provided with a through hole 119 for allowing liquid to flow into the liquid storage tank 113, a sealing plate 109 that can be raised and lowered is provided between the guide plate 114 and the liquid storage tank 113, the sealing plate 109 closes the through hole 119 when it rises, and a dispersed spray structure 115 is provided below the center of the filter screen 116. The dispersed liquid spray structure 115 has a liquid spraying direction toward the filter 116 and is used to flush the solid impurities on the filter 116 to the concentration tank 118 outside the filter 116. The discharge port 108 on the side of the concentration tank 118 is connected to the solid-liquid separator 3 through a pipeline. A liquid spray pump 117 and a heating coil 122 connected to the heat exchanger 2 are provided at the bottom of the liquid storage tank 113. The liquid spray pump 117 is connected to the flushing nozzle 1151 of the dispersed liquid spray structure 115 through a water pipe 110.

[0021] The system uses a heat exchanger 2 to utilize low-temperature waste heat to heat the filtered liquid in the liquid storage tank 113 to a certain temperature. Before the liquid is evaporated, the liquid storage tank 113 and the upper guide area 112 and the filter area 111 are separated by a sealing plate 109. The guide area 112 and the filter area 111 form an evaporation area during the evaporation process. Then, the evaporation area is evacuated by a vacuum pump 5 to reduce the air pressure therein to a pressure that allows the high-temperature liquid in the liquid storage tank 113 to be evaporated. Then, the liquid spray pump 117 and the dispersed liquid spray structure 115 are used to spray liquid to the filter screen 116. On the one hand, the impact force generated by the liquid spray is used to wash the solid impurities and oil stains on the filter screen 116. Since the wastewater has been heated at this time, it can also quickly melt the oil impurities solidified on the filter screen 116, and the solid impurities and oil stains are tilted and washed to the side wall of the filter area 111 or the concentration tank 118 outside the filter screen 116. In this process, the sprayed high-temperature liquid is dispersed in a low-pressure environment, and the droplets have a large specific surface area, so they can evaporate quickly and be extracted, while the concentrated liquid that has not been evaporated reaches the side wall of the filter area 111 or the concentration tank 118 outside the filter screen 116 based on kinetic energy. In this way, the system simultaneously realizes the backwashing maintenance and evaporation of the filter screen 116, and also uses the kinetic energy of backwashing to separate the concentrated liquid and solid impurities, so that the concentrated liquid mixed with solid impurities and oil can be output from the pipeline to the solid-liquid separator 3 for further processing without affecting the evaporation process.

[0022] The guide plate 114 includes an inner cone shell portion and an outer cone shell portion, the upper surface of the inner cone shell portion is a cone surface with an upper circular edge smaller than a lower circular edge, the upper surface of the outer cone shell portion is a cone surface with an upper circular edge larger than a lower circular edge, and the bottom of the guide plate 114 connects the lower circular edges of the inner cone shell portion and the outer cone shell portion. The guide plate 114 guides the filtered liquid into the liquid storage tank 113 through the cone surfaces on both sides.

[0023] The sealing plate 109 is installed at the output end of the vertically arranged electric cylinder 103, and the electric cylinder 103 is installed below the bottom of the liquid storage tank 113, and the output end passes through the bottom of the liquid storage tank 113. In this way, the sealing plate 109 can be lifted and lowered, and the wastewater can be prevented from corroding the electric cylinder 103 and the heating process can be prevented from affecting the electric cylinder 103. The openings 119 on the guide plate 114 are arc-shaped and arranged circumferentially along their own extension direction. The sealing plate 109 is annular and corresponds to the shape and size of the openings 119. A sealing ring is provided on the top of the sealing plate 109. In this way, the area and number of the openings 119 can be expanded, and the sealing plate 109 can be convenient for closing multiple openings 119.

[0024] The dispersed liquid spray structure 115 includes a plurality of flushing nozzles 1151, a nozzle base 1152 and a rotating connector 1153. The flushing nozzles 1151 face obliquely upwards, and the plurality of flushing nozzles 1151 are circumferentially mounted at the bottom of the nozzle base 1152. The fixed portion of the rotating connector 1153 of the flushing nozzle 1151 is provided with an inlet connected to the fuel injection pump, and the rotating portion of the rotating connector 1153 is provided with outlets respectively connected to each flushing nozzle 1151. The projection of the flushing nozzle 1151 on the horizontal plane forms a certain angle with the radial direction of the filter 116. The dispersed liquid spray structure 115 is mounted on the top of the guide plate 114. The flushing nozzle 1151 is arranged in this way. On the one hand, it can flush away the solid impurities on the filter 116 in an inclined direction, and on the other hand, it can drive the rotating parts of the nozzle base 1152 and the rotating connecting piece 1153 to rotate. In this way, a limited number of flushing nozzles 1151 can automatically rotate around the center of the filter 116 during flushing, thereby achieving flushing of various areas of the filter 116.

[0025] The outer edge of the filter screen 116 is mounted on a conical elastic mounting plate 121, and the outer edge of the conical elastic mounting plate 121 is fixed to the inner edge of the concentration tank 118, which is annular and located at the bottom of the filtration area 111; the bottom periphery of the filter screen 116 is connected to the top of the sealing plate 109 through a support plate 120, and the support plate 120 passes through the through opening 119. On the one hand, this structure allows the filter screen 116 to rise and fall together with the sealing plate 109. In the filtering state, when the sealing plate 109 descends, the filter screen 116 descends together, and the inner edge of the conical elastic mounting plate 121 bends downward to form a funnel-shaped cone surface with an upper circular edge larger than a lower circular edge. In this state, the wastewater entering the filtration area 111 is guided to the filter screen 116 by the funnel-shaped cone surface, and filtration is achieved at the filter screen 116. In the evaporation state, the sealing plate 109 rises to seal the opening 119, and the filter screen 116 also rises together. The inner edge of the conical elastic mounting plate 121 bends upward to form a conical surface with an upper circular edge smaller than a lower circular edge. At this time, the inner edge of the conical elastic mounting plate 121 is higher than the bottom of the concentration tank 118, so that the solid impurities, oil stains and concentrated liquid flushed into the concentration tank 118 are temporarily stored in the annular concentration tank 118 and can be discharged from the drain port 108 connected to the concentration tank 118. This prevents the flushed material from flowing through the filter screen 116 again, making it difficult to fully flush the filter screen 116.

[0026] An exhaust fan 105 is provided on the top of the filter area 111, and the exhaust fan 105 is provided below the steam outlet 104, and the steam outlet 104 is connected to the condenser 4 through an air pipe. The exhaust port 106 on the top of the filter area 111 is connected to the vacuum pump 5 through an air pipe, and the air pipe is provided with a switch valve. In this way, when the wastewater is sprayed and evaporated, the steam is quickly extracted and transported to the condenser 4 through the exhaust fan 105, which accelerates the steam transportation and maintains the internal low-pressure environment. A support frame 102 is also provided outside the shell 101, and the shell 101 is fixed on the support frame 102. The support frame 102 includes an annular beam plate fixedly connected to the shell 101 and vertically arranged support leg columns for supporting purposes. The support leg columns are evenly arranged around the circumference of the annular beam plate and fixedly connected to the annular beam plate.

[0027] The working process of the present invention is as follows: first, the substance containing low-temperature waste heat, such as flue gas, is in the heat exchange medium of the heat exchanger 2 for heat exchange, and the wastewater is input into the filter area 111 of the wastewater treatment device 1. At this time, the wastewater treatment device 1 is in a filtering state, the sealing plate 109 is in a low position, and the opening 119 on the guide plate 114 is opened, the filter screen 116 is in a low position, and the wastewater is transported to the filter area 111. Guided by the funnel-shaped cone surface of the conical elastic mounting plate 121 in this state, the wastewater is filtered by the filter screen 116 and flows into the guide area 112. The filtered wastewater reaches the bottom of the guide plate 114 under the guidance of the guide plate 114, and flows to the liquid storage tank 113 below through the opened opening 119. At this time, the heat exchange medium flows to the heating coil 122 to heat the wastewater in the liquid storage tank 113. Since the waste heat is recycled at low temperature, the heating coil 122 can only heat the waste water to 70-80°C, at which time the waste water cannot evaporate quickly. If the flue gas is low temperature, the waste heat is recycled and then discharged or transported to a further flue gas purification system by a chimney 6 or other device.

[0028] When a certain amount of wastewater is stored in the liquid storage tank 113, the electric cylinder 103 starts to raise the sealing plate 109 to seal the opening 119, and the filter screen 116 rises accordingly, driving the inner edge of the conical elastic mounting plate 121 to bend upward to form a conical surface with an upper circular edge smaller than the lower circular edge. At this time, the wastewater treatment device 1 enters the evaporation state, and the evaporation area composed of the filter area 111 and the guide area 112 is first evacuated by the vacuum pump 5, and the air pressure is reduced to a level where the heated wastewater can evaporate quickly, and the vacuum pump 5 and the pipeline connected thereto are turned off. Then the liquid spray pump 117 is started, and the liquid spray pump 117 extracts the wastewater in the liquid storage tank 113 and disperses it from the flushing nozzle 1151. The sprayed liquid backwashes the filter screen 116. Under the impact of the heated wastewater, the solid impurities and solidified oil on the surface of the filter screen 116 are washed and melted. Since the flushing nozzle 1151 is tilted, solid impurities, oil and wastewater are dispersed and flushed to the outside of the filter screen 116. In this process, the high-temperature wastewater dispersed by the spray liquid evaporates rapidly in a low-pressure environment based on the surface area of ​​the dispersed droplets, and the residual liquid after evaporation and the solid impurities and oil are gathered through the side wall of the filter area 111 to the concentration tank 118 at the bottom of the filter area 111.

[0029] In this way, the rapid evaporation of the liquid-dispersed wastewater in a low-pressure environment and the backwashing of the filter screen 116 are achieved at the same time. At the same time, the concentrated liquid obtained by the backwashing is directed to the concentration tank 118, so as not to affect the continued liquid-spraying flushing of the wastewater. The concentrated liquid flow drives most of the solid impurities to be discharged, and the frequent cleaning of the interior of the wastewater treatment device 1 is avoided. The output concentrated liquid is further separated from the solid impurities by the solid separator. As for the steam formed by low-pressure evaporation, it is extracted by the exhaust fan 105 and transported to the condenser 4, and then condensed by the condenser 4 and output. Since the steam is formed by evaporation at a relatively low temperature in a low-pressure environment, in order to speed up the steam transportation, an air pump can be set at one end of the condenser 4 to further speed up the steam transportation. The steam at a relatively low temperature is more likely to condense into liquid water at the condenser 4.

[0030] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the inventive concept and technical solution of the present invention, or the inventive concept and technical solution are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A wastewater treatment system combined with waste heat utilization technology, characterized in that: The invention comprises a heat exchanger (2) for exchanging heat between low-temperature waste heat gas and a heat exchange medium, a wastewater treatment device (1), a solid-liquid separator (3), a condenser (4) and a vacuum pump (5), wherein the wastewater treatment device (1) comprises a shell (101), wherein a filter screen (116), a guide plate (114) and a liquid storage tank (113) are arranged in the shell (101), and the filter screen (116) and the guide plate (114) connect the shell (101) from top to bottom. The inner cavity of the filter (1) is divided into a filtering area (111), a guide area (112) and a liquid storage area. The liquid storage tank (113) is located in the liquid storage area. The vacuum pump (5) is connected to the filtering area (111). Wastewater is input into the filtering area (111) through a water inlet (107). The top of the filtering area (111) is also connected to the vacuum pump (5) and the condenser (4) through an air pipe. The bottom of the guide plate (114) is provided with a hole for allowing liquid to flow into the filter. The liquid storage tank (113) is provided with a through opening (119), a sealing plate (109) capable of being raised and lowered is provided between the guide plate (114) and the liquid storage tank (113), and the sealing plate (109) closes the through opening (119) when it is raised, and a dispersed liquid spraying structure (115) is provided below the center of the filter screen (116); the dispersed liquid spraying structure (115) has a liquid spraying direction toward the filter screen (116), and is used to spray liquid on the filter screen (116) The solid impurities are washed into a concentration tank (118) outside the filter (116); a liquid discharge port (108) on the side of the concentration tank (118) is connected to the solid-liquid separator (3) via a pipeline; a liquid spray pump (117) and a heating coil (122) connected to the heat exchanger (2) are provided at the bottom of the liquid storage tank (113); the liquid spray pump (117) is connected to a washing nozzle (1151) of the dispersed liquid spray structure (115) via a water pipe (110).

2. A wastewater treatment system combined with waste heat utilization technology according to claim 1, characterized in that: The outer edge of the filter screen (116) is mounted on a conical elastic mounting plate (121), and the outer edge of the conical elastic mounting plate (121) is fixed to the inner edge of a concentration tank (118), wherein the concentration tank (118) is annular and located at the bottom of the filtration area (111); the bottom periphery of the filter screen (116) is connected to the top of the sealing plate (109) via a support plate (120), and the support plate (120) passes through the through port (119).

3. A wastewater treatment system combined with waste heat utilization technology according to claim 2, characterized in that: In the filtering state, the sealing plate (109) and the filter screen (116) are lowered together, and the inner edge of the conical elastic mounting plate (121) is bent downward to form a funnel-shaped conical surface with an upper circular edge larger than a lower circular edge, and the wastewater entering the filtering area (111) is guided to the filter screen (116) by the funnel-shaped conical surface; while in the evaporating state, the sealing plate (109) and the filter screen (116) are raised together, the sealing plate (109) seals the through port (119), and the inner edge of the conical elastic mounting plate (121) is bent upward to form a conical surface with an upper circular edge smaller than a lower circular edge, and the inner edge of the conical elastic mounting plate (121) is higher than the bottom of the concentration tank (118).

4. The wastewater treatment system combined with waste heat utilization technology according to claim 1 is characterized in that: The dispersed liquid spray structure (115) comprises a plurality of flushing nozzles (1151), a nozzle base (1152) and a rotating connection piece (1153); the flushing nozzles (1151) face obliquely upward; the plurality of flushing nozzles (1151) are circumferentially mounted on the bottom of the nozzle base (1152); the fixed portion of the rotating connection piece (1153) of the flushing nozzles (1151) is provided with an inlet connected to the fuel injection pump; the rotating portion of the rotating connection piece (1153) is provided with outlets respectively connected to each flushing nozzle (1151); the projection of the flushing nozzle (1151) on a horizontal plane forms a certain angle with the radial direction of the filter (116).

5. The wastewater treatment system combined with waste heat utilization technology according to claim 1 is characterized in that: The guide plate (114) comprises an inner cone shell portion and an outer cone shell portion, the upper surface of the inner cone shell portion is a cone surface with an upper circular edge smaller than a lower circular edge, the upper surface of the outer cone shell portion is a cone surface with an upper circular edge larger than a lower circular edge, and the bottom of the guide plate (114) connects the lower circular edges of the inner cone shell portion and the outer cone shell portion.

6. A wastewater treatment system combined with waste heat utilization technology according to claim 5, characterized in that: The opening (119) on the guide plate (114) is arc-shaped and arranged circumferentially along its own extension direction; the sealing plate (109) is annular and corresponds to the shape and size of the opening (119); a sealing ring is provided on the top of the sealing plate (109).

7. The wastewater treatment system combined with waste heat utilization technology according to claim 1 is characterized in that: The sealing plate (109) is installed at the output end of a vertically arranged electric cylinder (103), and the electric cylinder (103) is installed below the bottom of the liquid storage tank (113), and the output end passes through the bottom of the liquid storage tank (113).

8. The wastewater treatment system combined with waste heat utilization technology according to claim 1 is characterized in that: An exhaust fan (105) is provided at the top of the filtering area (111), and the exhaust fan (105) is arranged below the steam outlet (104), and the steam outlet (104) is connected to the condenser (4) through an air pipe.

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