CN217676926U - High salt waste water concentrated treatment system - Google Patents
High salt waste water concentrated treatment system Download PDFInfo
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- CN217676926U CN217676926U CN202222130935.4U CN202222130935U CN217676926U CN 217676926 U CN217676926 U CN 217676926U CN 202222130935 U CN202222130935 U CN 202222130935U CN 217676926 U CN217676926 U CN 217676926U
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- 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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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Abstract
The utility model relates to the technical field of wastewater treatment, in particular to a high-salinity wastewater concentration treatment system, which comprises a heating device for heating high-salinity wastewater; the membrane distillation device is connected with the heating device and is used for bearing and containing the heated high-salinity wastewater; the polymer distillation membrane bag is arranged in the membrane distillation device and is positioned above the high-salinity wastewater; and the fan device is used for filling the heated and pressurized water vapor into the polymer distillation membrane bag and extracting water vapor generated by evaporation of water in the high-salinity wastewater in the membrane distillation device. Combine together membrane distillation device and heating device in this application for the moisture of the high salt waste water after the heating evaporates more easily in membrane distillation device and produces steam, and high temperature high pressure water vapor also promotes the evaporation of high salt waste water moisture in the polymer distillation membrane bag, thereby improves the concentration efficiency of high salt waste water.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to a high salt waste water concentrated treatment system.
Background
The desulfurization wastewater of the thermal power plant is high-salinity wastewater, and the high-salinity wastewater needs to be concentrated firstly in the treatment process of the high-salinity wastewater. In the conventional wastewater concentration treatment at present, a permeable membrane system can be used for concentrating high-salinity wastewater. For example, the high-salinity wastewater can be used as a driving liquid for forward osmosis, so that moisture in the high-salinity wastewater continuously permeates through the osmosis membrane system, thereby achieving the purpose of concentrating the high-salinity wastewater. However, in this process, the permeable membrane system is prone to fouling and the overall efficiency of the permeable membrane system is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a concentrated processing system of high salt waste water improves the concentrated treatment effeciency of high salt waste water and reduces treatment cost to a certain extent.
In order to solve the technical problem, the utility model provides a high salt waste water concentrated treatment system, include:
the heating device is used for heating the high-salinity wastewater;
the membrane distillation device is connected with the heating device and is used for bearing and containing the heated high-salinity wastewater;
the polymer distillation membrane bag is arranged in the membrane distillation device and is positioned above the high-salinity wastewater;
and the fan device is used for filling the heated and pressurized water vapor into the polymer distillation membrane bag and extracting water vapor generated by evaporation of water in the high-salt wastewater in the membrane distillation device.
In an optional embodiment of the present application, the heating device comprises a heating tank for carrying the high-salinity wastewater, and a solar heating device for heating the high-salinity wastewater.
In an optional embodiment of the present application, the solar heating device includes a photovoltaic power generation component, an electricity storage device connected to the photovoltaic power generation component, and an electric heating member disposed in the heating box;
the electricity storage device is used for storing the electric energy of the photovoltaic power generation assembly and providing heating electric energy for the electric heating element.
In an optional embodiment of the present application, the solar heating apparatus further includes a curved light-gathering reflector for reflecting and gathering sunlight, and the heating box is located at a light-gathering focus position of the curved light-gathering reflector.
In an optional embodiment of the present application, a stirring member is further disposed in the heating box.
In an optional embodiment of the present application, a thermometer and a liquid level meter are further disposed in the heating box.
In an alternative embodiment of the present application, the outer surface of the membrane distillation apparatus is provided with a thermal insulation layer.
In an alternative embodiment of the present application, a water pump is provided between the heating device and the membrane distillation device.
The utility model provides a high salt waste water concentrated treatment system, include: the heating device is used for heating the high-salinity wastewater; the membrane distillation device is connected with the heating device and is used for bearing and containing the heated high-salinity wastewater; the polymer distillation membrane bag is arranged in the membrane distillation device and is positioned above the high-salinity wastewater; and the fan device is used for filling the heated and pressurized water vapor into the polymer distillation membrane bag and extracting water vapor generated by evaporation of water in the high-salinity wastewater in the membrane distillation device.
In the application, in the process of concentrating the high-salt wastewater, the membrane distillation device and the heating device are combined, and the high-salt wastewater is heated by the heating device and then is conveyed to the membrane distillation device, so that the heated high-salt wastewater is easier to generate water vapor in the membrane distillation device to generate water vapor; on the basis, the fan device further introduces heated and pressurized water vapor into a high molecular distillation membrane bag in the membrane distillation device, and high-salt wastewater is secondarily heated by the high-temperature and high-pressure water vapor to further promote the evaporation of water in the high-salt wastewater; the vapor generated by the evaporation of the water in the high-salinity wastewater is extracted and taken away by the fan device, so that the concentration of the high-salinity wastewater can be realized.
To sum up, carry out the concentrated in-process to high salt waste water in this application, can realize carrying out twice heating to high salt waste water to improve the evaporation efficiency of moisture in the salt waste water to a certain extent, and then promote concentrated treatment efficiency.
Drawings
In order to clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-salinity wastewater concentration treatment system provided in an embodiment of the present application.
Detailed Description
In the conventional technique of carrying out the osmotic concentration to high salt waste water at present, because need the osmotic membrane direct and high salt waste water contact for metal ion that can not avoid in the high salt waste water adheres to and the scale deposit on the osmotic membrane surface, makes the osmotic membrane need often change, leads to the concentrated cost of high salt waste water great relatively, and in whole infiltration process, need consume longer time, and concentration efficiency is low.
For this reason, provide in this application and certainly will heat and the concentrated processing system that the distillation combined together high salt waste water, realize the quick effectual concentrated processing of high salt waste water.
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a high-salinity wastewater concentration treatment system provided in an embodiment of the present application, and the high-salinity wastewater concentration treatment system may include:
the heating device is used for heating the high-salinity wastewater;
a membrane distillation device 10 connected with the heating device and used for bearing and containing heated high-salinity wastewater;
a high molecular distillation membrane bag 11 arranged in the membrane distillation device 10 and positioned above the high-salinity wastewater;
a fan device 12 for filling the heated and pressurized water vapor into the polymer distillation membrane bag 11 and for extracting water vapor generated by the evaporation of water in the high-salinity wastewater in the membrane distillation device 10.
In this embodiment, in the process of concentrating the high-salt wastewater, the heating device is first used to heat the high-salt wastewater, so that the high-salt wastewater flows into the membrane distillation apparatus 10 after the temperature of the high-salt wastewater rises, and compared with the high-salt wastewater at normal temperature, the high-salt wastewater at high temperature has moisture evaporated and vaporized from a liquid state more easily; on the basis, a fan device 12 is further utilized to fill the heated and pressurized water vapor into the polymer distillation membrane bag 11; because the polymer distillation membrane bag 11 is suspended in the membrane distillation device 10 and is positioned above the high-salinity wastewater, the water vapor filled into the polymer distillation membrane bag 11 is in a high-temperature and high-pressure state after being heated and pressurized, obviously, the air flow in the membrane distillation device 10 can exchange heat with the water vapor in the polymer distillation membrane bag 11, so that the environment in the membrane distillation device 10 is in a heated high-temperature environment, and the evaporation speed of the water in the high-salinity wastewater is further increased; from this through the dual heating effect that high temperature high pressure water vapor goes on high salt waste water in heating device and the polymer distillation membrane bag 11, the vapor that makes the moisture rapid evaporation in the high salt waste water produce can be taken away by the extraction of fan unit 12 again, has just also realized the concentration of high salt waste water.
In the concentrated processing procedure of above-mentioned high salt waste water, high salt waste water has carried out dual heating because of the high temperature high pressure steam through heating device and among the polymer distillation membrane bag 11, has promoted the efficiency of moisture evaporation in high salt waste water to a certain extent to the concentrated treatment effeciency of high salt waste water has been promoted to a certain extent.
In addition, in an optional embodiment of the present application, in order to further inhibit scaling, a dosing component may be further disposed in the heating device, and a scale inhibitor may be added into the high-salinity wastewater through the dosing component, so as to inhibit scaling of different components in the whole device.
For the heating device in this embodiment, the heating device may include a heating box 20 for carrying high-salinity wastewater, and in order to reduce the heating cost for heating the high-salinity wastewater, a solar heating device may be used in this application to heat the high-salinity wastewater in the heating box 20; that is, the high salinity wastewater is heated by solar energy in this embodiment.
For this solar heating apparatus, specifically, a photovoltaic power generation module 21, an electric storage device 22, and an electric heating member 23 can be employed.
The photovoltaic power generation assembly 21 receives solar illumination, converts light energy into electric energy, stores the generated electric energy in the electric storage device 22, and utilizes the electric storage device 22 to supply power to and heat the electric heating element 23.
The electric heating element 23 may be disposed inside the heating box 20, and may be, for example, an electric heating rod inserted into the heating box 20, and the electric heating rod is energized to heat the high-salinity wastewater in the heating box 20 to raise the temperature of the high-salinity wastewater.
On this basis, in order to realize more even heating to the high salt waste water in the heating box 20, can also further set up stirring part 24 in the heating box 20, this stirring part 24 can be the stirring rod that has stirring vane, and this stirring rod is connected with driving motor, and this driving motor can be supplied power by electric storage equipment 22 equally, and then realizes stirring the high salt waste water in the heating box 20.
In addition, because the stirring member 24 and the electric heating element 23 are required to be soaked in high-salinity wastewater, the stirring member 24 and the electric heating element 23 are preferably made of corrosion-resistant materials, including but not limited to carbon steel lining rubber, duplex stainless steel and the like.
Further, considering that when the heating box 20 is heated, the water in the high salinity wastewater in the heating box 20 is inevitably partially evaporated to form water vapor; thus, in order to avoid excessive vapor pressure in the heating tank 20, the heating tank 20 may adopt a water tank which is not completely closed, for example, the heating tank 20 may include a tank structure with an upper end opened; on the basis, the box body structure is further provided with filter cloth made of corrosion-resistant materials with good heat conductivity, so that the box body structure has good air permeability and can prevent impurities such as dust and the like from entering. In addition, the filter cloth can be made of light-transmitting materials, so that sunlight can penetrate through the filter cloth to irradiate the high-salinity wastewater in the box body structure, and the high-salinity wastewater can be heated.
In order to further improve the heating efficiency of the high-salinity wastewater, in an optional embodiment of the present application, the heating device may further include a curved light-gathering reflection plate 25 for reflecting and gathering sunlight, and the heating box is located at a light-gathering focus position of the curved light-gathering reflection plate 25.
The curved light-gathering reflection plate 25 and the photovoltaic power generation assembly 21 both belong to solar equipment, and compared with the photovoltaic power generation assembly 21 which generates electric energy by using solar energy, the curved light-gathering reflection plate 25 gathers and irradiates sunlight to the heating box body 20 which bears high-salinity wastewater after reflecting and gathering the sunlight, so that the sunlight is directly irradiated and heated.
The curved surface of the curved light gathering reflector 25 can be a spherical surface, and the curved light gathering reflector 25 is supported by the base. Considering that the direction of the sunlight incident to the curved light-gathering reflection plate 25 changes with time, and the direction of the light reflected by the curved light-gathering reflection plate 25 also changes, a driving device can be arranged on the base bearing the curved light-gathering reflection plate 25, and the driving device can drive the curved light-gathering reflection plate 25 to rotate and move, so that the curved light-gathering reflection plate 25 can reflect sunlight at an optimal angle, and the heating efficiency of the high-salt wastewater in the heating box 20 is ensured.
The heating chamber 20 may be made of a material having good heat conductivity and resistance to chloride ion corrosion, including but not limited to glass fiber reinforced plastic, titanium alloy, duplex stainless steel, etc., and the inner wall of the heating chamber 20 may be provided with an anticorrosive coating.
Further, it is considered that the curved light-gathering reflecting plate 25 can not reflect sunlight to heat the high-salt wastewater in rainy days, and the heating box 20 with good heat conductivity can also cause heat loss of the high-salt wastewater; for this reason, in an optional embodiment of the present application, a detachable thermal insulation layer may be further disposed on an outer surface of the heating box 20, and when the lighting condition is good, the curved light-gathering reflecting plate 25 is used to heat the high-salinity wastewater in the heating box 20; when the illumination condition is not good, the outer surface of the heating box body 20 is provided with the heat-insulating layer, so that the temperature loss of the high-salinity wastewater in the heating box body 20 is avoided.
In practical application, for two different solar heating modes of the curved light gathering reflector 25 and the electric heating element 23, the curved light gathering reflector 25 can be preferentially adopted to heat the high-salinity wastewater, and the electric energy generated by the photovoltaic power generation component 21 is stored in the electricity storage device 22; when the temperature of the curved light-gathering reflecting plate 25 for heating the high-salinity wastewater is not high enough, the electric heating element 23 can be simultaneously started to heat the high-salinity wastewater.
In order to further perform more precise control of the temperature of the high salinity wastewater in the heating tank 20, a thermometer 26 and a liquid level meter 27 may be further provided in the heating tank. When the temperature of the high-salinity wastewater in the heating box 20 is detected to be reduced by the thermometer 26, the heating power of the electric heating element 23 can be controlled or the flow rate of the high-salinity wastewater which flows into the heating box 20 can be adjusted, so that the temperature of the high-salinity wastewater in the heating box 20 is maintained in a stable temperature range; the temperature of the high-salinity wastewater can be maintained at about 90 ℃.
After the high-salinity wastewater in the heating box 20 is heated, the heated high-salinity wastewater is discharged into the membrane distillation apparatus 10 through a water pump or the like, wherein the membrane distillation apparatus 10 is substantially a reservoir of a sealed structure for bearing the high-salinity wastewater, and a plurality of polymer distillation membrane bags 11 are arranged above the reservoir. As shown in fig. 1, in the embodiment shown in fig. 1, three polymer distillation membrane bags 11 are arranged side by side. The vapor that produces behind the heating of high salt waste water permeates polymer distillation membrane bag 11 and enters into polymer membrane bag 11 in, extracts through fan unit 12 to the air in the polymer distillation membrane bag 11 again to the extraction of the vapor that the realization got into in polymer distillation membrane bag 11 is discharged, thereby realizes carrying out concentrated treatment to the high salt waste water in the cistern.
The polymer distillation membrane bag 11 is made of polymer materials, has excellent heat transfer performance, smooth surface and difficult scaling and corrosion, can resist Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC) content of more than 500mg/L, and has relatively low requirement on water quality of inlet water.
The blower 12 may be configured to charge the high-temperature and high-pressure steam after heating and pressurizing into the polymer distillation membrane bag 11, and the steam extracted by the blower 12 from the space inside the membrane distillation apparatus 10 and outside the polymer membrane bag 11 may be re-introduced into the polymer membrane bag 11 after heating and pressurizing.
In order to avoid the temperature of the heated high-salt wastewater from being gradually reduced in the membrane distillation apparatus 10 due to temperature loss and further affecting the water evaporation rate of the heated high-salt wastewater, the membrane distillation apparatus 10 may be made of materials having corrosion resistance, low heat transfer property and the like, and the membrane distillation apparatus 10 may further use a low heat transfer material to form a heat insulation layer to be disposed on the outer surface of the membrane distillation apparatus 10, so as to keep the temperature of the high-salt wastewater in the membrane distillation apparatus 10 approximately constant.
It should be noted that, in practical applications, a water pump and a water pipe may be respectively used to drive the heating tank 20 to add new high-salt wastewater, discharge the high-salt wastewater in the heating tank 20 into the membrane distillation apparatus 10, and discharge the high-salt wastewater concentrated in the membrane distillation apparatus 10; the water pump and the water delivery pipeline are made of corrosion-resistant materials, and the material capable of resisting chloride ion concentration not less than 100000mg/L is prepared.
Under the irradiation of sunlight, the photovoltaic power generation component 21 generates electric energy and stores the electric energy in the electric storage device 22 through a cable, and then the electric energy is sent to an electric heating element 23 arranged in the heating box body 20 through the cable, and the heating box body 20 is arranged on a heating device platform; high-salt wastewater enters a heating box body 20 through a high-salt wastewater lifting pump and a conveying pipeline, the high-salt wastewater is heated by an electric heating element 23, a stirring component 24 is arranged in the heating box body, and the high-salt wastewater is uniformly heated under the action of the stirring component 24; under the irradiation of sunlight, the curved light-gathering reflecting plate 25 arranged on the ground can reflect and focus the sunlight on the heating box body 20 to heat the high-salinity wastewater in the heating box body, and the high-salinity wastewater is uniformly heated under the stirring action of the stirring part 24; the thermometer 26 and the liquid level meter 27 are arranged in the heating box body 20, can display the liquid level and the temperature data of the high-salinity wastewater in the heating water tank 20, and can heat the high-salinity wastewater in the heating box body 20 to about 90 ℃ by controlling the liquid level of the heating box body 20, the angle of the curved surface light gathering reflection plate 25 and the start and stop of the electric heating element 23; the heated high-salt wastewater enters the membrane distillation device 10 through a water pump and a conveying pipeline, a high-molecular distillation membrane 11 is arranged in the membrane distillation device 10, the heated high-salt wastewater is quickly evaporated in the membrane distillation device 10 to form water vapor, the water vapor is heated up under the suction and compression action of a fan device 12 and is injected into a high-molecular distillation membrane bag 11, part of the water vapor is condensed into distilled water in the circulating process and is discharged through a fresh water discharge water pump and the conveying pipeline, a concentrated solution formed after the high-salt wastewater is evaporated and concentrated is discharged through a concentrated solution discharge water pump and an output pipeline for further treatment, and the concentration multiple of the high-salt wastewater can be adjusted by controlling the water quantity of the high-salt wastewater entering the membrane distillation device 10.
To sum up, the high-salt wastewater concentration treatment system of the application adopts the combination of the heating device and the membrane distillation device, the high-salt wastewater is heated and then discharged into the membrane distillation device, the heated high-salt wastewater can be evaporated into steam at a higher speed in the membrane distillation device, meanwhile, the high-salt wastewater in the membrane distillation device is heated secondarily by the high-temperature and high-pressure steam introduced into the polymer distillation membrane bag, the moisture evaporation efficiency in the high-salt wastewater is further improved, and the steam generated by the moisture evaporation of the high-salt wastewater is extracted and discharged by the fan device, so that the concentration of the high-salt wastewater is realized; therefore, the application can realize the rapid concentration treatment of the high-salinity wastewater.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the scope of the appended claims.
Claims (8)
1. A high salinity wastewater concentrated treatment system, characterized by comprising:
the heating device is used for heating the high-salinity wastewater;
the membrane distillation device is connected with the heating device and is used for bearing and containing the heated high-salinity wastewater;
the high-molecular distillation membrane bag is arranged in the membrane distillation device and is positioned above the high-salinity wastewater;
and the fan device is used for filling the heated and pressurized water vapor into the polymer distillation membrane bag and extracting water vapor generated by evaporation of water in the high-salt wastewater in the membrane distillation device.
2. The high salinity wastewater concentrated treatment system of claim 1, wherein the heating means comprises a heating tank for carrying the high salinity wastewater, and a solar heating means for heating the high salinity wastewater.
3. The high-salinity wastewater concentration treatment system according to claim 2, wherein the solar heating device comprises a photovoltaic power generation component, an electricity storage device connected with the photovoltaic power generation component and an electric heating element arranged in the heating tank body;
the electricity storage device is used for storing the electric energy of the photovoltaic power generation assembly and providing heating electric energy for the electric heating element.
4. The high-salinity wastewater concentration treatment system according to claim 3, wherein the solar heating device further comprises a curved light-gathering reflecting plate for reflecting and gathering sunlight, and the heating box body is positioned at the light-gathering focus position of the curved light-gathering reflecting plate.
5. The high-salinity wastewater concentration treatment system according to claim 3, wherein a stirring part and a dosing part are further arranged in the heating box body; the chemical adding part is used for adding a scale inhibitor into the high-salinity wastewater in the heating box body.
6. The high-salinity wastewater concentration treatment system according to claim 4 or 5, wherein a thermometer and a liquid level meter are further arranged in the heating tank body.
7. The high salinity wastewater concentration treatment system of claim 1, wherein the external surface of said membrane distillation unit is provided with a thermal insulation layer.
8. The high-salinity wastewater concentration treatment system according to claim 1, wherein a water pump is arranged between the heating device and the membrane distillation device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222130935.4U CN217676926U (en) | 2022-08-12 | 2022-08-12 | High salt waste water concentrated treatment system |
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| CN202222130935.4U CN217676926U (en) | 2022-08-12 | 2022-08-12 | High salt waste water concentrated treatment system |
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| CN202222130935.4U Active CN217676926U (en) | 2022-08-12 | 2022-08-12 | High salt waste water concentrated treatment system |
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