Water resource recovery apparatus and method

Abstract

The application provides a water resource recycling device and method. The water resource recycling device comprises a heat preservation water tank, an evaporation water tank and a nitrous oxide gas inlet pipe. Hot water (sewage) stored in the heat preservation water tank is sprayed into the evaporation water tank through an atomizing nozzle, and nitrous oxide is introduced into the evaporation water tank at the same time. Nitrous oxide is injected into water, and the high water solubility and heat effect of nitrous oxide accelerate the evaporation of water. The evaporated water is condensed to obtain pure water, so that the recycling and utilization of sewage can be realized. The water is sprayed by the atomizing nozzle and contacted with nitrous oxide, so that the gas-liquid contact area is greatly increased and the evaporation efficiency is improved. The application uses a solar heater to heat the sewage to be recycled, which not only reduces energy consumption, but also achieves the goal of green environmental protection. The application further comprises a cyclone separator. The cyclone separator effectively separates water vapor and nitrous oxide, so that the water recycling efficiency and purity are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water treatment and resource recovery, and particularly relates to a water resource recovery device and method. BACKGROUND

[0002] With the increasingly serious global water resource shortage problem, how to efficiently extract pure water from sewage has become an urgent issue. Traditional sewage treatment technologies, such as reverse osmosis and distillation, have achieved some success in water quality treatment, but generally have problems such as high energy consumption, complex equipment and low treatment efficiency. Most of the current water evaporation devices rely on natural airflow or single heat source to heat water, resulting in low evaporation efficiency, especially in high humidity or low temperature environment, the evaporation effect is more limited.

[0003] In recent years, the role of greenhouse gases in climate change has attracted widespread attention, especially the solubility characteristics of nitrous oxide (N2O) in water have been found to significantly promote the evaporation process of water, thereby improving the water treatment efficiency.

[0004] However, there is no device for treating sewage by using nitrous oxide (N2O). SUMMARY

[0005] Therefore, the present application provides a water resource recovery device and method. Nitrous oxide is injected into water to accelerate water evaporation by using its high water solubility and thermal effect. Meanwhile, the present application combines a rotating atomization technology to increase the gas-liquid contact area and improve the evaporation efficiency. In order to effectively separate water vapor and nitrous oxide, the device is designed with a high-efficiency gas-liquid separation system to ensure the purity of water. In addition, the application of a solar heating system not only reduces energy consumption, but also achieves the goal of green environmental protection. The present application provides an innovative and efficient sewage treatment and pure water recovery technology, which solves the problems of low evaporation efficiency, high energy consumption and difficult separation of traditional devices.

[0006] In order to achieve the above purpose, the present application provides a water resource recovery device, comprising:

[0007] A heat preservation water tank for storing hot water;

[0008] An evaporation water tank, a water guide pipe is arranged in the evaporation water tank, one end of the water guide pipe penetrates through the evaporation water tank and communicates with the heat preservation water tank, and a plurality of atomizing nozzles are arranged on the water guide pipe and located in the evaporation water tank;

[0009] A nitrous oxide gas inlet pipe, which communicates with the evaporation water tank and is used for introducing nitrous oxide into the evaporation water tank.

[0010] Preferably, the device further comprises a heating assembly, the heating assembly comprising:

[0011] A sewage inlet pipe;

[0012] a plurality of heating pipes, each of which is in communication with the sewage inlet pipe;

[0013] a plurality of solar heaters, each of which corresponds to a heating pipe and is arranged on the heating pipe to heat the sewage in the heating pipe;

[0014] a sewage outlet pipe, each of the plurality of heating pipes being in communication with the sewage outlet pipe, and the sewage outlet pipe being in communication with the heat-insulated water tank.

[0015] Preferably, the sewage treatment device further comprises a cyclone separator.

[0016] The cyclone separator is provided with an inlet on one side of the upper end of the cyclone separator, and the inlet is in communication with the evaporation water tank.

[0017] The bottom of the cyclone separator is provided with a water outlet, and the water outlet is in communication with the evaporation water tank.

[0018] The top of the cyclone separator is provided with an air outlet.

[0019] Preferably, the sewage treatment device further comprises a condensing assembly, and the condensing assembly comprises:

[0020] a condensing tank, the air outlet being in communication with the condensing tank;

[0021] a condenser arranged in the condensing tank to condense water vapor;

[0022] a condensing conduit arranged in the condensing tank and below the condenser, the condensing conduit being in communication with a pure water collecting tank after passing through the condensing tank, and the condensed water flowing into the pure water collecting tank through the condensing conduit.

[0023] Preferably, the sewage treatment device further comprises a nitrous oxide circulating pipe, one end of the nitrous oxide circulating pipe being in communication with the condensing tank, and the other end of the nitrous oxide circulating pipe being in communication with the nitrous oxide inlet pipe.

[0024] The condenser comprises a pair of semiconductor refrigerating fins arranged obliquely, each of the semiconductor refrigerating fins being provided with a heat dissipation fin, and the condensing conduit being arranged below the semiconductor refrigerating fins.

[0025] Preferably, the evaporation water tank is further provided with a bent pipe, and the surface of the bent pipe is provided with LiCl material.

[0026] The evaporation water tank is further provided with a sewage collecting tank below the evaporation water tank, and the evaporation water tank and the sewage collecting tank are in communication through a sewage pipe.

[0027] The heat-insulated water tank is provided with a liquid level meter.

[0028] Preferably, the sewage treatment device further comprises a first circulating pipe and a second circulating pipe.

[0029] One end of the first circulation pipe is communicated with the water guide pipe after passing through the evaporation water tank, and the other end is communicated with the heat preservation water tank;

[0030] One end of the second circulation pipe is communicated with the heat preservation water tank, and the other end is communicated with the sewage inlet pipe.

[0031] Preferably, valves are arranged on the sewage inlet pipe, the first circulation pipe, the second circulation pipe, the water guide pipe and between the heat preservation water tank and the evaporation water tank.

[0032] Preferably, a water pump is arranged on the second circulation pipe.

[0033] In the second aspect, the application further provides a water resource recycling method, which adopts the water resource recycling device to recycle, and includes the following steps:

[0034] The sewage enters the heating pipe through the sewage inlet pipe, and is heated by the solar heater; the heated sewage enters the heat preservation water tank through the sewage outlet pipe;

[0035] The sewage in the heat preservation water tank enters the evaporation water tank, and the nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe; the nitrous oxide contacts with the sewage to release heat so as to evaporate the sewage;

[0036] The water vapor mixture formed by evaporation is separated by the cyclone separator, and then enters the condensing assembly; the water vapor is condensed and flows into the collection tank through the condensing guide pipe to obtain pure water, and the nitrous oxide enters the nitrous oxide inlet pipe through the nitrous oxide circulation pipe for recycling;

[0037] Preferably, the nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe at 100-140 mL / min;

[0038] The temperature of the sewage in the heat preservation water tank is 80-85℃;

[0039] The pressure in the evaporation water tank is 0.8-1.6 Mpa.

[0040] Compared with the prior art, the water resource recycling device and method has the following beneficial effects:

[0041] 1. The water resource recovery device of the present application comprises a heat preservation water tank, an evaporation water tank and a nitrous oxide gas inlet pipe, the heat preservation water tank stores hot water and preserves the heat of the hot water; the hot water (sewage) stored in the heat preservation water tank is sprayed into the evaporation water tank through an atomizing nozzle, and nitrous oxide (N2O) is introduced into the evaporation water tank at the same time, the nitrous oxide is injected into the water, the high water solubility and heat effect (heat is released when nitrous oxide (N2O) is dissolved in water to evaporate water) are utilized to accelerate the evaporation of water, and the evaporated water is condensed to obtain pure water, so that the recovery and utilization of sewage can be realized; the water is sprayed by the atomizing nozzle and contacted with nitrous oxide (N2O), which greatly increases the gas-liquid contact area and improves the evaporation efficiency.

[0042] 2. The water resource recovery device of the present application, the heating assembly comprises a sewage inlet pipe, a plurality of heating pipes, a plurality of solar heaters and a sewage outlet pipe, the present application utilizes the solar heater to heat the sewage to be recovered, which not only reduces the energy consumption, but also realizes the green environmental protection goal.

[0043] 3. The water resource recovery device of the present application further comprises a cyclone separator, which effectively separates water vapor and nitrous oxide, and ensures the recovery efficiency and purity of water.

[0044] 4. The water resource recovery device of the present application, the evaporation water tank is further provided with a bend pipe, and the surface of the bend pipe is provided with LiCl material; LiCl has strong hygroscopicity: LiCl is easy to form hydrate with water molecules, actively adsorbs water vapor in a humid environment, destroys the gas-liquid balance, and promotes the continuous evaporation of liquid water; heat is released during the hygroscopic process, which provides additional energy for water evaporation and reduces the activation energy required for evaporation.

[0045] 5. The water resource recovery method of the present application, under the condition of high temperature of 80-85 DEG C, by adjusting the pressure and flow of nitrous oxide, the evaporation rate of water is significantly improved, which is 3-5 times higher than that of traditional natural evaporation. At the same time, by adjusting the evaporation cavity pressure, rapid evaporation is realized under the condition of low energy consumption, which provides a new scheme for efficient water recovery and resource utilization. The parameter range has good practicability and repeatability, which can be flexibly adjusted according to actual engineering requirements. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any inventive labor.

[0047] Figure 1 It is a structural schematic view of the water resource recovery device of the present application.

[0048] Figure 2 Structure diagram of the connection between the heating assembly and the heat preservation water tank of the present application;

[0049] Figure 3 Structure diagram of the connection between the heat preservation water tank, the evaporation water tank and the cyclone separator of the present application;

[0050] Figure 4 Structure diagram of the cyclone separator of the present application;

[0051] Figure 5 Structure diagram of the connection between the cyclone separator and the condensing assembly of the present application;

[0052] Figure 6 Structure diagram of the connection between the condenser and the condensing pipe of the present application. DETAILED DESCRIPTION

[0053] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0054] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0055] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0056] In the description of the present application, it should be understood that the orientation or position relationship indicated by terms such as "upper" is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly placed when the product of the present application is used, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0057] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0058] It should be noted that the sequence of the following embodiments is not limited as the preferred sequence of the embodiments. In addition, in the description of the present application, the term "comprising" means "including but not limited to". The various embodiments of the present application can exist in the form of a range; it should be understood that the description in the form of a range is only for the convenience and brevity, and should not be understood as a hard limitation on the scope of the present application; therefore, it should be considered that the described range has been specifically disclosed all possible sub-ranges and single values in the range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers in the range, such as 1, 2, 3, 4, 5 and 6, which is applicable to any range. In addition, whenever a numerical range is indicated in this document, it refers to any cited number (fraction or integer) in the indicated range.

[0059] The water resource recycling device provided by the embodiments of the present application comprises a heat preservation water tank 2, an evaporation water tank 3, a nitrous oxide inlet pipe 4 and a water outlet pipe 5. Figures 1-6 As shown in the figure, the device comprises:

[0060] The heat preservation water tank 2 is used for storing hot water.

[0061] The evaporation water tank 3 is internally provided with a water guide pipe 31, one end of the water guide pipe 31 penetrating through the evaporation water tank 3 and being in communication with the heat preservation water tank 2, and a plurality of atomizing nozzles 32 being arranged on the water guide pipe 31 and located in the evaporation water tank 3.

[0062] The nitrous oxide inlet pipe 4 is in communication with the evaporation water tank 3 and is used for introducing nitrous oxide into the evaporation water tank 3.

[0063] The water resource recycling device of the present application comprises a heat preservation water tank 2, an evaporation water tank 3, and a nitrous oxide gas inlet pipe 4, the heat preservation water tank 2 stores hot water and preserves the hot water; the hot water stored in the heat preservation water tank 2 can be sprayed into the evaporation water tank 3 through a water guide pipe 31 and an atomizing nozzle 32; the nitrous oxide (N2O) is introduced into the evaporation water tank 3 through the nitrous oxide gas inlet pipe 4; the use method of the water resource recycling device of the present application is that the hot water (sewage) stored in the heat preservation water tank 2 is sprayed into the evaporation water tank 3 through the atomizing nozzle 32, and the nitrous oxide (N2O) is introduced into the evaporation water tank 3 at the same time, the nitrous oxide is injected into the water, the high water solubility and heat effect (heat is released when the nitrous oxide (N2O) is dissolved in the water to evaporate the water) are utilized to accelerate the evaporation of the water, and the evaporated water is condensed to obtain pure water, so that the sewage can be recycled and utilized. The water is sprayed by the atomizing nozzle 32 and contacted with the nitrous oxide (N2O), which greatly increases the gas-liquid contact area and improves the evaporation efficiency.

[0064] In some embodiments, further comprising a heating assembly 1, the heating assembly comprises:

[0065] a sewage inlet pipe 11;

[0066] a plurality of heating pipes 12, each of the heating pipes 12 is in communication with the sewage inlet pipe 11;

[0067] a plurality of solar heaters 13, each of the solar heaters 13 is arranged on a corresponding heating pipe 12 and used for heating the sewage in the heating pipe 12;

[0068] a sewage outlet pipe 14, each of the plurality of heating pipes 12 is in communication with the sewage outlet pipe 14, and the sewage outlet pipe 14 is in communication with the heat preservation water tank 2.

[0069] In the above embodiment, the heating assembly 1 comprises the sewage inlet pipe 11, the plurality of heating pipes 12, the plurality of solar heaters 13, and the sewage outlet pipe 14, each of the plurality of heating pipes 12 is in communication with the sewage inlet pipe 11, and the plurality of heating pipes 12 are connected in parallel with each other; each of the heating pipes 12 is provided with the solar heater 13, the sewage in the heating pipe 12 can be heated by the solar heater 13, each of the plurality of heating pipes 12 is in communication with the sewage outlet pipe 14, and the heated sewage flows into the heat preservation water tank 2 through the sewage outlet pipe 14. The sewage to be recycled is heated by the solar heater 13, which not only reduces the energy consumption but also achieves the goal of green environmental protection.

[0070] In some embodiments, further comprising a cyclone separator 5;

[0071] an inlet 51 is arranged on one side of the upper end of the cyclone separator 5, and the inlet 51 is in communication with the evaporation water tank 3;

[0072] The bottom of the cyclone separator 5 is provided with a water outlet 52, which is communicated with the evaporation water tank 3.

[0073] The top of the cyclone separator 5 is provided with a gas outlet 53.

[0074] In the above embodiment, the mixture of atomized water, nitrous oxide and water vapor is separated by the cyclone separator 5; specifically, in the evaporation water tank 3, water is in contact with nitrous oxide (N2O) to evaporate the water, forming a mixture of atomized water, nitrous oxide and water vapor, which enters the cyclone separator 5 through the inlet 51, is separated by the cyclone separator 5, the atomized water returns to the evaporation water tank 3 through the water outlet 52 at the lower end, and the nitrous oxide and water vapor are discharged from the top of the cyclone separator 5 through the gas outlet 53 and enter the condensing assembly 6 for condensation; the present application effectively separates water vapor and nitrous oxide by providing the cyclone separator 5, ensuring the recovery efficiency and purity of water. The cyclone separator 5 used in the present application is an existing cyclone separator, and the present application does not improve the cyclone separator itself.

[0075] In some embodiments, the condensing assembly 6 further comprises:

[0076] A condensing tank 61, the gas outlet 53 is communicated with the condensing tank 61;

[0077] A condenser 62 located in the condensing tank 61 for condensing water vapor;

[0078] A condensing conduit 63 located in the condensing tank 61 below the condenser 62, the condensing conduit 63 is communicated with a pure water collecting tank 64 after passing through the condensing tank 61, and the condensed water flows into the pure water collecting tank 64 through the condensing conduit 63.

[0079] In the above embodiment, the condensing assembly 6 comprises a condensing tank 61, a condenser 62, a condensing conduit 63 and a collecting tank 64; specifically, the gas outlet 53 at the top of the cyclone separator 5 is communicated with the condensing tank 61, the water vapor and nitrous oxide enter the condensing tank 61 through the gas outlet 53, the condenser 62 condenses the water vapor, the condensed water forms pure water, and the pure water flows into the pure water collecting tank 64 through the condensing conduit 63.

[0080] In some embodiments, the nitrous oxide circulation pipe 41 is further provided, one end of the nitrous oxide circulation pipe 41 is communicated with the condensing tank 6, and the other end is communicated with the nitrous oxide inlet pipe 4.

[0081] In the above embodiment, since the saturated vapor temperature of nitrous oxide is low, it still remains in a gaseous state, after condensation, the nitrous oxide gas is transported to the nitrous oxide inlet pipe 4 through the nitrous oxide circulation pipe 41 for recycling, increasing the utilization rate of nitrous oxide and saving costs.

[0082] In some embodiments, the condenser 62 comprises: a pair of semiconductor refrigerating plates 621 arranged obliquely, each semiconductor refrigerating plate 621 being provided with a heat dissipation fin 622; and a condensing pipe 63 located below the semiconductor refrigerating plates 621.

[0083] In the above embodiments, the condenser 62 comprises two semiconductor refrigerating plates 621, each semiconductor refrigerating plate 621 being provided with a heat dissipation fin 622, the semiconductor refrigerating plates 621 being arranged obliquely in the condensing box 61, the semiconductor refrigerating plates 621 forming an angle of 15-60° with the vertical direction, the condensing pipe 63 being located below the semiconductor refrigerating plates 621, the water vapor being condensed into liquid pure water by the semiconductor refrigerating plates 621 and flowing into the collecting box 64 along the condensing pipe 63; specifically, the working principle of the semiconductor refrigerating plates 621 is as follows: based on the Peltier effect, the semiconductor refrigerating plates 621 are driven by direct current to generate a temperature difference between the two ends of the semiconductor refrigerating plates 621, thereby realizing the functions of heat absorption and heat dissipation; the heat dissipation fins 622 are usually made of metal (such as aluminum or copper) and are in the form of thin sheets or toothed arrays and are attached to the surface of the semiconductor refrigerating plates, which function is to increase the heat dissipation area, accelerate the heat dissipation of the hot end of the semiconductor refrigerating plates, improve the heat dissipation efficiency, and avoid the failure of the semiconductor refrigerating plates due to overheating.

[0084] In some embodiments, the evaporating water tank 3 is further provided with a bent pipe 33, and the surface of the bent pipe 33 is provided with LiCl material; specifically, the bent pipe 33 is arranged in the evaporating water tank 3 in an S-shaped manner, the surface of the bent pipe 33 is provided with LiCl material, and the bent pipe 33 is made of ceramic material; LiCl has strong hygroscopicity: LiCl is easy to form hydrate (LiCl・nH2O, n=1-5) with water molecules, actively adsorb water vapor in a humid environment, destroy the gas-liquid balance, and promote the continuous evaporation of liquid water; heat is released during the hygroscopic process, providing additional energy for water evaporation and reducing the activation energy required for evaporation.

[0085] In some embodiments, the evaporating water tank 3 is further provided with a sewage collecting tank 35, and the evaporating water tank 3 and the sewage collecting tank 35 are connected by a sewage pipe 34. Specifically, the sewage in the evaporating water tank 3 is evaporated to form water vapor, the water vapor is condensed to form liquid pure water which is collected in the collecting box 64, and the sewage that is not evaporated is stored in the sewage collecting tank 35 through the sewage pipe 34, and a valve is arranged on the sewage pipe 34.

[0086] In some embodiments, the heat-insulating water tank 2 is provided with a liquid level meter 21, which is used to monitor the water level of the hot water in the heat-insulating water tank 2; if the water level of the hot water in the heat-insulating water tank 2 is insufficient, the solar heater is started to heat the sewage, and the hot water is delivered into the heat-insulating water tank 2.

[0087] In some embodiments, the system further comprises a first circulating pipe 36 and a second circulating pipe 15.

[0088] One end of the first circulation pipe 36 is communicated with the water guide pipe 31 after passing through the evaporation water tank 3, and the other end is communicated with the heat preservation water tank 2;

[0089] One end of the second circulation pipe 15 is communicated with the heat preservation water tank 2, and the other end is communicated with the sewage inlet pipe 11.

[0090] In the above embodiment, the two ends of the first circulation pipe 36 are respectively communicated with the water guide pipe 31 and the heat preservation water tank 2, and the water in the water guide pipe 31 returns to the heat preservation water tank 2 through the first circulation pipe 36 for water evaporation again; the two ends of the second circulation pipe 15 are respectively communicated with the sewage inlet pipe 11 and the heat preservation water tank 2, and the water in the heat preservation water tank 2 returns to the sewage inlet pipe 11 through the second circulation pipe 15 and is heated again for water evaporation, thereby forming a complete circulation loop.

[0091] In some embodiments, valves are arranged on the sewage inlet pipe 11, the first circulation pipe 36, the second circulation pipe 15, and the water guide pipe 31 between the heat preservation water tank 2 and the evaporation water tank 3.

[0092] Specifically, the electromagnetic valve 10 is arranged on the sewage inlet pipe 11; the first valve 37 is arranged on the first circulation pipe 36, and a water pump is further arranged on the first circulation pipe 36; the second valve 17 is arranged on the second circulation pipe 15; the third valve 38 is arranged on the water guide pipe 31 between the heat preservation water tank 2 and the evaporation water tank 3; and the fourth valve 18 and the water pump are arranged on the sewage outlet pipe 14.

[0093] In some embodiments, the water pump 16 is arranged on the second circulation pipe 15.

[0094] Based on the same inventive concept, the application further provides a water resource recycling method, which adopts the above water resource recycling device for recycling and comprises the following steps:

[0095] S1, sewage enters the heating pipe through the sewage inlet pipe and is heated by the solar heater, and the heated sewage enters the heat preservation water tank through the sewage outlet pipe;

[0096] S2, the sewage in the heat preservation water tank enters the evaporation water tank, and the nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe, and the nitrous oxide contacts the sewage to release heat to evaporate the sewage;

[0097] S3, the water vapor mixture formed by evaporation enters the condensing assembly after being separated by the cyclone separator, and the water vapor is condensed and flows into the collection tank through the condensing guide pipe to obtain pure water, and the nitrous oxide enters the nitrous oxide inlet pipe through the nitrous oxide circulation pipe for recycling.

[0098] Specifically, the water resource recovery method of the present application comprises the following steps: sewage enters the heating pipe 12 through the sewage inlet pipe 11 and is heated by the solar heater 13, and the heated sewage enters the heat preservation water tank 2 through the sewage outlet pipe 14 for heat preservation and storage; the sewage in the heat preservation water tank 2 enters the water guide pipe 31 and is sprayed out by the atomizing nozzle 32 into the evaporation water tank 3, nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe, and the nitrous oxide is in contact with the sewage to release heat to evaporate the sewage; the mixture of atomized water, nitrous oxide and water vapor formed by evaporation enters the cyclone separator 5 through the inlet 51, is separated by the cyclone separator 5, and the atomized water returns to the evaporation water tank 3 through the water outlet 52 at the lower end, while the nitrous oxide and water vapor are discharged from the gas outlet 53 at the top of the cyclone separator 5 and enter the condensing tank 61, the water vapor is condensed to form liquid pure water after passing through the semiconductor refrigerating fin 621, and flows into the collection tank 64 along the condensing pipe 63; the nitrous oxide gas is transported to the nitrous oxide inlet pipe 4 through the nitrous oxide circulation pipe 41 for recycling; and the sewage that is not evaporated is stored in the sewage collection tank 35 through the sewage pipe 34; the water in the water guide pipe 31 returns to the heat preservation water tank 2 through the first circulation pipe 36 for re-evaporation; the water in the heat preservation water tank 2 can return to the sewage inlet pipe 11 through the second circulation pipe 15 and be heated again for water evaporation, thus forming a complete circulation loop.

[0099] In some embodiments, the nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe at a flow rate of 100-140 mL / min;

[0100] The temperature of the sewage in the heat preservation water tank is 80-85℃;

[0101] The pressure in the evaporation water tank is 0.8-1.6 Mpa.

[0102] Specifically, under the condition of high temperature of 80-85℃, the present application significantly improves the evaporation rate of water by adjusting the pressure and flow rate of nitrous oxide, which is 3-5 times higher than that of traditional natural evaporation. At the same time, by regulating the pressure of the evaporation chamber, rapid evaporation is realized under the condition of low energy consumption, which provides a new scheme for efficient water recovery and resource utilization. The parameter range has been verified by experiments to have good practicability and repeatability, and can be flexibly adjusted according to actual engineering needs.

[0103] Specifically, the physical interaction between nitrous oxide and water in the present application, the dissolution process of nitrous oxide is a non-chemical reaction, the dissolution of nitrous oxide in water conforms to Henry's law, the solubility increases with the increase of pressure and decreases with the increase of temperature, and the dissolution process releases dissolution heat to promote water evaporation; when the pressure of the water solution dissolving nitrous oxide is reduced or the temperature is increased, nitrous oxide will escape from the water to form micro-bubbles, and the disturbance of these bubbles can accelerate the evaporation of water; through the comprehensive adjustment of temperature and pressure, the evaporation rate of water can be accelerated.

[0104] The water resource recovery device and method of the present application are further illustrated below with specific examples. This part further illustrates the content of the present application in combination with specific examples, but should not be understood as a limitation of the present application. If not specifically stated, the technical means used in the examples are conventional means known to those skilled in the art. Unless specifically stated, the reagents, methods and equipment used in the present application are conventional reagents, methods and equipment in the art.

[0105] Example 1

[0106] This example provides a water resource recovery method using the device as described above, comprising the following steps: Figures 1-6

[0107] S1, the sewage enters the heating pipe through the sewage inlet pipe, and is heated by the solar heater, and the heated sewage enters the heat preservation water tank through the sewage outlet pipe;

[0108] S2, the sewage in the heat preservation water tank enters the evaporation water tank, and the nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe, and the nitrous oxide contacts with the sewage to release heat to evaporate the sewage;

[0109] S3, the water vapor mixture formed by evaporation enters the condensing assembly after being separated by the cyclone separator, and the water vapor flows into the collection tank through the condensing pipe after being condensed, and pure water is obtained, and the nitrous oxide enters the nitrous oxide inlet pipe through the nitrous oxide circulation pipe for recycling;

[0110] The nitrous oxide is introduced into the evaporation water tank at a rate of 100 mL / min through the nitrous oxide inlet pipe;

[0111] The temperature of the sewage in the heat preservation water tank is 80℃;

[0112] The pressure in the evaporation water tank is 0.8 Mpa.

[0113] Example 2

[0114] This example provides a water resource recovery method using the device as described above, comprising the following steps: Figures 1-6

[0115] ​​S1, the sewage enters the heating pipe through the sewage inlet pipe, and is heated by the solar heater. The heated sewage enters the heat preservation water tank through the sewage outlet pipe;

[0116] S2, the sewage in the heat preservation water tank enters the evaporation water tank. Nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe. Nitrous oxide contacts with the sewage and releases heat to evaporate the sewage;

[0117] S3, the water vapor mixture formed by evaporation enters the condensing assembly after being separated by the cyclone separator. The water vapor flows into the collection tank through the condensing pipe after being condensed, and pure water is obtained. Nitrous oxide enters the nitrous oxide inlet pipe through the nitrous oxide circulation pipe for recycling;

[0118] In this embodiment, the nitrous oxide is introduced into the evaporation water tank at a rate of 110 mL / min through the nitrous oxide inlet pipe.

[0119] The temperature of the sewage in the heat preservation water tank is 82 ℃.

[0120] The pressure in the evaporation water tank is 1.0 Mpa.

[0121] Example 3

[0122] This embodiment provides a water resource recycling method using the device as described above, comprising the following steps: Figures 1-6

[0123] S1, the sewage enters the heating pipe through the sewage inlet pipe, and is heated by the solar heater. The heated sewage enters the heat preservation water tank through the sewage outlet pipe;

[0124] S2, the sewage in the heat preservation water tank enters the evaporation water tank. Nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe. Nitrous oxide contacts with the sewage and releases heat to evaporate the sewage;

[0125] S3, the water vapor mixture formed by evaporation enters the condensing assembly after being separated by the cyclone separator. The water vapor flows into the collection tank through the condensing pipe after being condensed, and pure water is obtained. Nitrous oxide enters the nitrous oxide inlet pipe through the nitrous oxide circulation pipe for recycling;

[0126] In this embodiment, the nitrous oxide is introduced into the evaporation water tank at a rate of 120 mL / min through the nitrous oxide inlet pipe.

[0127] The temperature of the sewage in the heat preservation water tank is 83 ℃.

[0128] The pressure in the evaporation water tank is 1.2 Mpa.

[0129] Example 4

[0130] This embodiment provides a water resource recycling method using the device as described above, comprising the following steps: Figures 1-6 ​The device comprises the following steps:

[0131] S1, the sewage enters the heating pipe through the sewage inlet pipe, and is heated by the solar heater. The heated sewage enters the heat preservation water tank through the sewage outlet pipe;

[0132] S2, the sewage in the heat preservation water tank enters the evaporation water tank. Nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe. Nitrous oxide contacts with the sewage and releases heat to evaporate the sewage;

[0133] S3, the water vapor mixture formed by evaporation enters the condensing assembly after being separated by the cyclone separator. The water vapor flows into the collection tank through the condensing pipe after being condensed, and pure water is obtained. Nitrous oxide enters the nitrous oxide inlet pipe through the nitrous oxide circulation pipe for recycling;

[0134] The nitrous oxide is introduced into the evaporation water tank at a rate of 130 mL / min through the nitrous oxide inlet pipe;

[0135] The temperature of the sewage in the heat preservation water tank is 85 ℃;

[0136] The pressure in the evaporation water tank is 1.4 Mpa.

[0137] Example 5

[0138] The water resource recycling method provided in the embodiment uses the device as described above, and comprises the following steps: Figures 1-6 The device comprises the following steps:

[0139] S1, the sewage enters the heating pipe through the sewage inlet pipe, and is heated by the solar heater. The heated sewage enters the heat preservation water tank through the sewage outlet pipe;

[0140] S2, the sewage in the heat preservation water tank enters the evaporation water tank. Nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe. Nitrous oxide contacts with the sewage and releases heat to evaporate the sewage;

[0141] S3, the water vapor mixture formed by evaporation enters the condensing assembly after being separated by the cyclone separator. The water vapor flows into the collection tank through the condensing pipe after being condensed, and pure water is obtained. Nitrous oxide enters the nitrous oxide inlet pipe through the nitrous oxide circulation pipe for recycling;

[0142] The nitrous oxide is introduced into the evaporation water tank at a rate of 140 mL / min through the nitrous oxide inlet pipe;

[0143] The temperature of the sewage in the heat preservation water tank is 85 ℃;

[0144] The pressure in the evaporation water tank is 1.6 Mpa.

[0145] According to the process parameters in examples 1-5, the water evaporation rate (calculated as how many L of pure water is produced per hour h) is calculated and the results are shown in Table 1 below.

[0146] Table 1 - Water evaporation rate of water resource recovery method in examples 1-5

[0147] Example Temperature of the sewage in the heat preservation water tank Pressure in the evaporation water tank Nitrous oxide flow rate Evaporation rate Example 1 80 ℃ 0.8 Mpa 100 mL / min 15 L / h Example 2 82 ℃ 1.0 Mpa 110 mL / min 18 L / h Example 3 83 ℃ 1.2 Mpa 120 mL / min 22 L / h Example 4 85 ℃ 1.4 Mpa 130 mL / min 20 L / h Example 5 85 ℃ 1.6 Mpa 140 mL / min 17 L / h

[0148] As can be seen from Table 1 above, by controlling the sewage temperature, evaporation water tank pressure, and nitrous oxide flow rate, the sewage evaporation rate in examples 1-5 reaches 15-22 L / h; when the sewage temperature in the heat preservation water tank is 83°C, the evaporation water tank pressure is 1.2 Mpa, and the nitrous oxide flow rate is 120 mL / min in example 3, the water evaporation rate reaches a maximum of 22 L / h, which is the optimal process parameters.

[0149] The above description is merely preferred embodiments of the present application but not to confine the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A water resource recovery method, characterized by, The water resource recycling device is used for recycling, and the water resource recycling device comprises the following components. A heat preservation water tank is used for storing hot water. An evaporation water tank is internally provided with a water guide pipe, one end of the water guide pipe is communicated with the heat preservation water tank after penetrating through the evaporation water tank, a plurality of atomizing nozzles are arranged on the water guide pipe and located in the evaporation water tank. A nitrous oxide inlet pipe is communicated with the evaporation water tank and used for introducing nitrous oxide into the evaporation water tank. Further comprising a heating assembly, the heating assembly comprises: A sewage inlet pipe; A plurality of heating pipes, each of the heating pipes is communicated with the sewage inlet pipe; A plurality of solar heaters corresponding to the heating pipes, the solar heaters are arranged on the heating pipes and used for heating the sewage in the heating pipes; A sewage outlet pipe, the plurality of heating pipes are communicated with the sewage outlet pipe, and the sewage outlet pipe is communicated with the heat preservation water tank; The evaporation water tank is further provided with a bend pipe, and the surface of the bend pipe is provided with LiCl material. The water resource recycling method comprises the following steps. The sewage enters the heating pipes through the sewage inlet pipe, is heated by the solar heaters, and then enters the heat preservation water tank through the sewage outlet pipe after being heated. The sewage in the heat preservation water tank enters the evaporation water tank, the nitrous oxide is introduced into the evaporation water tank through the nitrous oxide inlet pipe, and the nitrous oxide is contacted with the sewage to release heat so as to evaporate the sewage. The water vapor mixture formed by evaporation is separated by a cyclone separator, enters a condensing assembly, and then the water vapor is condensed and flows into a collection tank through a condensing guide pipe to obtain pure water, and the nitrous oxide enters the nitrous oxide inlet pipe through a nitrous oxide circulation pipe to be recycled. The nitrous oxide is introduced into the evaporation water tank at a flow rate of 120 mL / min through the nitrous oxide inlet pipe. The temperature of the sewage in the heat preservation water tank is 83 DEG C. The pressure in the evaporation water tank is 1.2 Mpa.

2. The water resource recovery method of claim 1, wherein, Further comprising a cyclone separator. One side of the upper end of the cyclone separator is provided with an inlet communicated with the evaporation water tank. The bottom of the cyclone separator is provided with a water outlet communicated with the evaporation water tank. The top of the cyclone separator is provided with an air outlet.

3. The water resource recovery method of claim 2, wherein, Further comprising a condensing assembly, the condensing assembly comprises: A condensing tank, the air outlet is communicated with the condensing tank; A condenser located in the condensing tank and used for condensing water vapor; A condensing guide pipe located in the condensing tank and below the condenser, the condensing guide pipe is communicated with a pure water collection tank after penetrating through the condensing tank, and the condensed water flows into the pure water collection tank through the condensing guide pipe.

4. The water resource recovery method of claim 3, wherein, Further comprising a nitrous oxide circulation pipe, one end of the nitrous oxide circulation pipe is communicated with the condensing tank, and the other end is communicated with the nitrous oxide inlet pipe. The condenser comprises a pair of inclined semiconductor refrigerating fins, and each of the semiconductor refrigerating fins is provided with a heat dissipation fin.

5. The water resource recovery method of claim 1, wherein, The evaporation water tank is further provided with a sewage collection tank below, and the evaporation water tank and the sewage collection tank are communicated through a sewage pipe. The heat preservation water tank is provided with a liquid level meter.

6. The water resource recovery method of claim 1, wherein, Further comprising a first circulation pipe and a second circulation pipe. One end of the first circulation pipe is communicated with the water guide pipe after penetrating through the evaporation water tank, and the other end is communicated with the heat preservation water tank. One end of the second circulation pipe is communicated with the heat preservation water tank and the other end is communicated with the sewage inlet pipe.

7. The water resource recovery method of claim 6, wherein, Valves are arranged on the sewage inlet pipe, the first circulation pipe, the second circulation pipe and the water guide pipe and between the heat preservation water tank and the evaporation water tank. A water pump is arranged on the second circulation pipe.

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