CN114180766A - Source separation urine processing system and method - Google Patents
Source separation urine processing system and method Download PDFInfo
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- CN114180766A CN114180766A CN202111228312.4A CN202111228312A CN114180766A CN 114180766 A CN114180766 A CN 114180766A CN 202111228312 A CN202111228312 A CN 202111228312A CN 114180766 A CN114180766 A CN 114180766A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/447—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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Abstract
The invention provides a source separation urine processing system and a source separation urine processing method, which relate to the field of urine processing and comprise the following steps: the pretreatment device is used for pretreating urine; the liquid inlet of the first container is communicated with the liquid outlet of the pretreatment device; the liquid inlet is communicated with the liquid outlet of the first container and is used for heating urine entering the heating device; the membrane distillation device is used for distilling the heated urine and comprises a urine inlet, a concentrated solution outlet and a distillate outlet, the urine inlet is communicated with the liquid outlet of the heating device, and the concentrated solution outlet is communicated with the liquid inlet of the first container. So set up, can directly follow the source and carry out stabilization and resourceful treatment to the urine, utilize the nutrient element and the moisture of urine respectively, make the urine stabilization through the preliminary treatment simultaneously, both can utilize nutrient elements such as nitrogen phosphorus potassium in the urine, also can reduce sewage treatment plant's processing load, reduce the energy consumption, reduce cost.
Description
Technical Field
The invention relates to the technical field of urine treatment, in particular to a source separation urine treatment system and a source separation urine treatment method.
Background
Urine, as part of domestic sewage, is typically transported to municipal sewage plants for centralized treatment. The proportion of urine in domestic sewage is only less than 1%, but nitrogen, phosphorus and potassium in urine respectively account for 87%, 50% and 54% of the total content of corresponding elements in domestic sewage. The treatment mode of municipal sewage treatment plant needs to consume a large amount of clean tap water resource to be difficult for retrieving nutrient elements such as nitrogen, phosphorus, in addition, urine does not do any preliminary treatment in conventional storage and processing procedure, easily leads to the hydrolysis of urine and the volatilization of ammonia nitrogen.
Therefore, it is desirable to provide a source separation urine treatment system that can recover the nutrient elements and moisture in urine from a source.
Disclosure of Invention
The invention aims to provide a source separation urine treatment system and a source separation urine treatment method capable of recovering nutrient elements and moisture in urine.
The invention provides a source separation urine processing system, which comprises:
the pretreatment device is used for adding medicine, stirring and standing for precipitation treatment to urine;
the liquid inlet of the first container is communicated with the liquid outlet of the pretreatment device;
the liquid inlet of the heating device is communicated with the liquid outlet of the first container and is used for heating the urine entering the heating device;
the membrane distillation device is used for distilling the heated urine so as to enable the urine to form concentrated liquid and distillate, and comprises a urine inlet, a concentrated liquid outlet and a distillate outlet, wherein the urine inlet is communicated with the liquid outlet of the heating device, and the concentrated liquid outlet is communicated with the liquid inlet of the first container.
According to the source separation urine treatment system provided by the invention, the pretreatment device comprises a stirring mechanism and a pH value detection device;
the stirring mechanism is used for stirring the urine;
the pH value detection device is used for detecting the pH value of the urine.
According to the source separation urine treatment system provided by the invention, the pretreatment device further comprises a urine stabilizing container and a sedimentation container which are communicated with each other;
the urine stabilizing container is provided with a dosing port so as to add a stabilizing agent into the urine stabilizing container through the dosing port, and the stirring mechanism and the pH value detection device are arranged in the urine stabilizing container;
the sedimentation container is used for standing and precipitating urine, and a liquid outlet of the sedimentation container is communicated with a liquid inlet of the first container.
The source separation urine treatment system provided by the invention further comprises a first water pump and a filtering device;
a liquid inlet of the first water pump is communicated with a liquid outlet of the first container, and a liquid outlet of the first water pump is communicated with a liquid inlet of the heating device;
the filtering device is arranged between the liquid outlet of the first water pump and the heating device so as to filter the urine discharged from the liquid outlet of the first water pump.
The source separation urine treatment system provided by the invention further comprises a second container, wherein the liquid inlet of the second container is communicated with the distillate outlet.
According to the source separation urine treatment system provided by the invention, the membrane distillation device comprises a direct contact type membrane distiller or an air gap type membrane distiller;
the direct contact type membrane distiller comprises a cooling liquid inlet and a cooling liquid outlet, the cooling liquid inlet of the direct contact type membrane distiller is communicated with the liquid outlet of the second container, and the cooling liquid outlet of the direct contact type membrane distiller forms the distillate outlet and is communicated with the liquid inlet of the second container;
or the air gap type membrane distiller comprises the distillate outlet, a cooling liquid inlet and a cooling liquid outlet, wherein the cooling liquid inlet of the air gap type membrane distiller is communicated with the liquid outlet of the second container, and the cooling liquid outlet of the air gap type membrane distiller is communicated with the liquid inlet of the second container.
According to the source separation urine processing system provided by the invention, the source separation urine processing system further comprises a cooler;
the cooler is arranged between the cooling liquid inlet of the direct contact type membrane distiller and the second container or between the cooling liquid inlet of the air gap type membrane distiller and the second container, and is used for cooling the distillate.
According to the source separation urine treatment system provided by the invention, the membrane distillation device comprises an air-swept membrane distiller and a first condenser;
the air sweeping type membrane distiller comprises a sweeping gas inlet and a water vapor exhaust outlet, wherein the sweeping gas inlet is communicated with a gas source, the water vapor exhaust outlet is communicated with the gas inlet of the first condenser, and a liquid outlet of the first condenser forms the distillate outlet;
alternatively, the membrane distillation apparatus comprises a reduced pressure membrane distiller and a second condenser;
the reduced pressure type membrane distiller comprises a water vapor outlet, the water vapor outlet is communicated with the second condenser, an air outlet of the second condenser is communicated with an air extractor, and a liquid outlet of the second condenser forms the distillate outlet.
According to the source separation urine treatment system provided by the invention, the heating device is a solar heating device or a heat pump heating device.
The invention also provides a source separation urine processing method implemented on the basis of the source separation urine processing system, which comprises the following steps:
adding Ca (OH) to urine in a pretreatment device2And/or NaOH and stirring until the pH of the urine is greater than or equal to 10.5;
standing the urine with the pH value of more than or equal to 10.5;
introducing the supernatant of the standing urine into a first container;
introducing the urine in the first container into a heating device for heating;
introducing the heated urine into a membrane distillation device for distillation;
introducing a concentrated solution produced by the distillation into the first container.
According to the source separation urine treatment device provided by the invention, the urine in the pretreatment device is subjected to dosing, stirring and standing precipitation treatment. Through adding stabilizer in the urine, make the urine stabilization, avoid urea in the urine to hydrolyze, reduce the stink that urea hydrolyzes and produces. Standing to precipitate can remove solid substances in urine. And introducing the supernatant after standing and precipitating into the first container. Then the urine in the first container is introduced into a heating device to heat the urine, the heated urine is introduced into a membrane distillation device to be distilled, the concentrated solution is introduced into the first container, and the distillate is discharged from a distillate outlet. The concentration of nutrient elements in the urine is improved by concentrating the urine, so that the nutrient elements, such as urea and the like, can be conveniently recovered. The distillate can be used as reclaimed water for recycling, irrigation, toilet flushing, greening water or groundwater recharging.
Through source separation urine processing apparatus, can directly carry out stabilization and resourceful treatment to the urine from the source, make the urine need not discharge into municipal sewage treatment system, utilize the nutrient element and the moisture of urine respectively, reduce urea hydrolysis and ammonia nitrogen loss through urine stabilization simultaneously, improve nutrient element recovery efficiency in the urine, nutrient element such as nitrogen phosphorus potassium in both can utilizing the urine, also can reduce sewage treatment plant's processing load, reduce the energy consumption, reduce cost.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for 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 some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a source separation urine management device provided by the present invention;
FIG. 2 is a schematic diagram of a direct contact membrane distiller provided by the present invention;
FIG. 3 is a schematic structural diagram of an air gap membrane distiller provided by the present invention;
FIG. 4 is a schematic structural view of a gas swept membrane distiller provided by the present invention;
FIG. 5 is a schematic view of a vacuum type membrane distiller provided in the present invention;
reference numerals:
1. a heating device; 2. A urine entry port; 3. A concentrated solution outlet;
4. a second container; 5. A stirring mechanism; 6. A medicine adding port;
7. a pH value detection device; 8. A urine stabilizing container; 9. A settling vessel;
10. a first container; 11. A first water pump; 12. A second water pump;
13. a direct contact membrane distiller; 14. An air gap membrane distiller; 15. A distillate discharge port;
16. a gas swept membrane distiller; 17. A first condenser; 18. A reduced pressure membrane distiller;
19. a second condenser; 20. A hydrophobic microporous membrane; 21. A membrane distillation device;
22. cooling the wall; 23. And an air extracting device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A source separation urine disposal system provided in an embodiment of the present invention is described below in conjunction with fig. 1-5.
Specifically, the source separation urine treatment device includes a pretreatment device, a first container, a heating device 1, and a membrane distillation device 21.
Wherein, preprocessing device is used for adding medicine, stirring and the sedimentation of stewing to the urine. For example, the pretreatment device can be in communication with a collection device such as a toilet's plumbing, urinal, or the like, such that urine flows into the pretreatment device.
The liquid inlet of the first container 10 is communicated with the liquid outlet of the pretreatment device.
The liquid inlet of the heating device 1 is communicated with the liquid outlet of the first container 10, and is used for heating the urine entering the heating device 1. Alternatively, the heating temperature for urine may be set to 40 ℃ to 60 ℃.
The membrane distillation device 21 is used for distilling the heated urine so that the urine forms a concentrated solution and a distillate. The membrane distillation device 21 comprises a urine inlet 2, a concentrated solution outlet 3 and a distillate outlet 15. The urine inlet 2 is communicated with the liquid outlet of the heating device, and the concentrated solution outlet 3 is communicated with the liquid inlet of the first container 10.
The membrane distillation technology belongs to the content of the prior art, and the principle is as follows: the water molecules of the liquid at the hot side are evaporated and vaporized and pass through the micropores of the hydrophobic microporous membrane 20 to enter the cold side, and the solutes such as non-volatile ions and molecules in the water phase cannot permeate through the hydrophobic membrane, so that the purposes of separating, concentrating or purifying the solution are realized.
According to the source separation urine treatment device provided by the embodiment of the invention, the urine in the pretreatment device is subjected to dosing, stirring and standing precipitation treatment. Through adding stabilizer in the urine, make the urine stabilization, avoid urea in the urine to hydrolyze, reduce the stink that urea hydrolyzes and produces. Standing to precipitate can remove solid substances in urine. And introducing the supernatant after standing and precipitating into the first container. Then the urine in the first container is introduced into a heating device to heat the urine, the heated urine is introduced into a membrane distillation device to be distilled, the concentrated solution is introduced into the first container, and the distillate is discharged from a distillate outlet. The concentration of nutrient elements in the urine is improved by concentrating the urine, so that the nutrient elements, such as urea and the like, can be conveniently recovered. The distillate can be used as reclaimed water for recycling, irrigation, toilet flushing, greening water or groundwater recharging.
Through source separation urine processing apparatus, can directly carry out stabilization and resourceful treatment to the urine from the source, make the urine need not discharge into municipal sewage treatment system, utilize the nutrient element and the moisture of urine respectively, reduce urea hydrolysis and ammonia nitrogen loss through urine stabilization simultaneously, improve nutrient element recovery efficiency in the urine, nutrient element such as nitrogen phosphorus potassium in both can utilizing the urine, also can reduce sewage treatment plant's processing load, reduce the energy consumption, reduce cost.
Alternatively, the hydrophobic microporous membrane 20 may be Polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), Polysulfone (PSF), Polyethersulfone (PES), polypropylene (PP), or a copolymer mixed matrix membrane. The aperture of the hydrophobic microporous membrane 20 is 0.01 to 0.1 μm.
In some embodiments provided by the present invention, the pretreatment device comprises a stirring mechanism 5 and a pH detection device 7.
The stirring mechanism 5 is used for stirring urine so that the medicament in the urine after adding the medicament can be quickly dissolved. For example, the stirring mechanism 5 may include a stirring blade and a motor. The output shaft of the motor is in transmission connection with the stirring blades so as to drive the stirring blades to rotate.
The pH detection device 7 is used for detecting the pH value of urine. The pH detection means 7 may be, for example, a pH detector.
A stabilizer, such as calcium hydroxide and/or sodium hydroxide, is added to the urine and stirred by the stirring mechanism 5, so that the stabilizer can be rapidly dissolved and uniformly distributed. The pH value detection device 7 can detect the pH value of urine, and the adding of the stabilizing agent is stopped when the pH value of the urine is greater than or equal to 10.5.
In some embodiments provided herein, the pretreatment device further comprises a urine stabilizing vessel 8 and a settling vessel 9 in communication with each other. The container described herein includes, but is not limited to, a tank body, or a tank body.
The urine stabilizing container 8 is provided with a dosing port 6 to add a stabilizer into the urine stabilizing container 8 through the dosing port 6. The stirring mechanism 5 and the pH value detection device 7 are both arranged in the urine stabilizing container 8.
The sedimentation container is used for standing and precipitating the urine, and a liquid outlet of the sedimentation container is communicated with a liquid inlet of the first container. The bottom of the settling vessel 9 is provided with a discharge port for discharging the sediment.
In the use, in leading-in urine in the collection device 8 urine stabilization container, add stabilizer and stirring, then the urine after adding stabilizer is introduced into and is stood and subsided in sedimentation container 9. The sediment in the sedimentation container 9 is discharged through the discharge port, and the supernatant in the sedimentation container 9 is introduced into the first container 10. The urine in the first container 10 is introduced into the heating apparatus 1 and heated, and the heated urine is distilled and concentrated by the membrane distillation apparatus 21. The concentrated urine is distilled by the membrane distillation device 21 and then introduced into the first container 10, so that the urine is concentrated for a plurality of times.
Through setting up urine stabilizing vessel 8, sedimentation container 9 and first container 10, can carry out corresponding processing to the urine in each container in step, the operating condition of three container can not mutually interfere, can improve the treatment effeciency and the treatment quality of urine.
Optionally, the bottom of the settling vessel 9 is provided with a conical structure, and the cross section of the conical structure becomes gradually smaller in the direction from top to bottom. The discharge opening for the sediment is arranged on the conical structure. The sediment is convenient to collect by arranging the conical structure.
In some embodiments provided by the present invention, the source-separated urine disposal device further comprises a first water pump 11 and a filtering device.
A liquid inlet of the first water pump 11 is communicated with a liquid outlet of the first container, and a liquid outlet of the first water pump 11 is communicated with a liquid inlet of the heating device 1. The urine in the first container 10 is introduced into the heating apparatus 1 by the first water pump 11 and heated.
The filtering device is arranged between the liquid outlet of the first water pump 11 and the heating device 1 to filter urine discharged from the liquid outlet of the first water pump 11. Solid impurities and the like can be prevented from entering the heating device 1 through the filtering device, so that the heating device 1 is blocked and the heating efficiency is influenced. Alternatively, the filter device may be a cartridge filter.
In some embodiments provided herein, membrane distillation apparatus 21 comprises a direct contact membrane distiller 13. The direct contact membrane distiller includes a coolant inlet port and a coolant outlet port. And a cooling liquid inlet of the direct contact type membrane distiller is communicated with a liquid outlet of the second container, and a cooling liquid outlet of the direct contact type membrane distiller forms a distillate outlet and is communicated with a liquid inlet of the second container.
Referring to fig. 2, in the direct contact membrane distiller 13, one side of a hydrophobic microporous membrane 20 is in direct contact with heated urine and the other side is in direct contact with cooling liquid. The water vapor in the urine passes through the hydrophobic microporous membrane 20 and is condensed by directly contacting with the cooling liquid. The coolant discharge port of the direct contact membrane distiller 13 at this time constitutes the distillate discharge port 15 described above.
Further, the distillate in the second container 4 can be guided into the cooling liquid inlet of the direct contact type membrane distiller 13 by the second water pump 12, so that the water vapor penetrating through the hydrophobic microporous membrane 20 is condensed, and therefore, an external water source is not needed, and the effect of saving water resources is achieved.
Of course, the membrane distillation apparatus 21 is not limited to the above-described direct contact membrane distiller 13. For example, in other embodiments provided by the present invention, membrane distillation apparatus 21 comprises an air gap membrane distiller 14. The air gap type membrane distiller includes the above-mentioned distillate discharge port 15, cooling liquid inlet port and cooling liquid discharge port. And a cooling liquid inlet of the air gap type membrane distiller is communicated with a liquid outlet of the second container, and a cooling liquid outlet of the air gap type membrane distiller is communicated with a liquid inlet of the second container.
Referring to fig. 3, unlike the direct contact membrane distiller 13, the air gap type membrane distiller 14 has a cavity between the cooling liquid channel and the hydrophobic microporous membrane 20, and the distillate discharge port 15 communicates with the cavity. The water vapor in the urine enters the cavity after passing through the hydrophobic microporous membrane 20, contacts with the cold wall 22 in the cavity to be condensed into water drops, and is discharged from the distillate discharge port 15 after being converged.
Further, the distillate in the second container 4 can be introduced into the cold side of the air gap type membrane distiller 14 through the second water pump 12, so that the water vapor penetrating through the hydrophobic microporous membrane 20 is condensed, and therefore, an external water source is not needed, and the effect of saving water resources is achieved.
In some embodiments provided herein, the source-separated urine processing device further comprises a cooler.
The cooler is arranged between the coolant inlet of the direct contact membrane distiller 13 and the second vessel 4. Or the cooler is arranged between the cooling liquid inlet of the air gap type membrane distiller 14 and the second container 4. The cooler is used for cooling the distillate. The distillate after temperature reduction is introduced into the membrane distillation device 21 to reduce the temperature of the water vapor, so that the condensation effect of the water vapor can be improved, and the distillation efficiency of the urine can be improved.
Alternatively, a first flow meter and a first flow valve are provided between the heating device 1 and the urine inlet 2 of the membrane distillation device 21, and a second flow meter and a second flow valve are provided between the second water pump 12 and the coolant inlet of the membrane distillation device 21. The amounts of urine and coolant entering the membrane distillation apparatus 21 can be detected by providing the first flow meter and the second flow meter, respectively. The urine flow and coolant flow can be adjusted by a first flow valve and a second flow valve, respectively.
In some embodiments provided herein, membrane distillation apparatus 21 comprises a gas swept membrane distiller 16 and a first condenser 17.
As shown in fig. 4, the sweep membrane distiller 16 includes a sweep gas inlet and a water vapor outlet. The air inlet of the purge gas is communicated with an air source, and the water vapor exhaust port is communicated with the air inlet of the first condenser. The liquid outlet of the first condenser constitutes a distillate outlet. As shown in fig. 4, the right side of the hydrophobic microporous membrane of the air-swept membrane distiller is a cavity, the sweep gas inlet and the water vapor outlet are both communicated with the cavity, and after water vapor enters the cavity through the hydrophobic microporous membrane, gas blown out by the gas source is brought into the first condenser to be condensed into liquid and discharged from the liquid outlet.
Of course, the membrane distillation apparatus 21 is not limited to the form of the above-described gas-swept membrane distiller 16. For example, in other embodiments provided by the present invention, the membrane distillation apparatus 21 comprises a reduced pressure membrane distiller 18 and a second condenser 19.
Referring to FIG. 5, the reduced pressure membrane distiller 18 includes a water vapor vent. The water vapor outlet is communicated with a second condenser, and the exhaust port of the second condenser is communicated with an air extractor 23. The liquid outlet of the second condenser forms a distillate outlet. The air extractor 23 may be a vacuum pump, and water vapor penetrating through the hydrophobic microporous membrane enters the second condenser from the water vapor discharge port by the suction action of the vacuum pump to be condensed into liquid, and is discharged from the liquid discharge port.
In some embodiments provided by the present invention, the heating device 1 is a solar heating device or a heat pump heating device. The solar heating device 1 may be a vacuum tube type solar heater or a flat plate type heat collector. The heat pump heating apparatus 1 may be provided as a ground source heat pump heating apparatus, or a plant waste heat pump heating apparatus. So set up, source separation urine processing apparatus can utilize clean energy to carry out work, and low carbon environmental protection more.
The embodiment of the invention also provides a source separation urine processing method, which is implemented based on the source separation urine processing system, and comprises the following steps:
adding a stabilizing agent to the urine in the pretreatment device and stirring until the pH value of the urine is greater than or equal to 10.5. The stabilizer comprises Ca (OH)2And/or NaOH. Further, the amount of NaOH used may be 3.5g to 5.5g/L, i.e., 3.5g to 5.5g of NaOH per liter of urine. Ca (OH)2The dosage of (A) can be 4.5g to 6g/L, namely 4.5g to 6g of Ca (OH) is added to each liter of urine2。
Standing urine with pH value greater than or equal to 10.5. The precipitate may be periodically removed.
The supernatant of the standing urine is introduced into the first container.
The urine in the first container is introduced into the heating device 1 and heated.
The heated urine is introduced into the membrane distillation apparatus 21 and distilled.
The concentrate produced by the distillation is introduced into the first vessel.
The urea enzyme activity in the urine can be inhibited by adding the stabilizing agent into the urine, so that the urea can be prevented from being hydrolyzed into ammonia nitrogen to generate odor, the loss of the ammonia nitrogen in the subsequent membrane distillation process can be reduced, and meanwhile, the pathogenic bacteria in the urine can be killed by the higher pH value of the urine in the stabilizing process, and the health risk in the urine resource utilization process is reduced. The concentrated urine is directed into the first container 10. The concentration of nutrient elements in the urine is improved by concentrating the urine, so that the nutrient elements, such as urea and the like, can be conveniently recovered. The distillate can be used as reclaimed water for recycling, irrigation, toilet flushing, greening water or groundwater recharging.
By using the source separation urine treatment method, the urine can be directly subjected to resource treatment from the source, so that the urine does not need to be discharged into a municipal sewage treatment system, nutrient elements and water in the urine are respectively utilized, the nutrient elements such as nitrogen, phosphorus and potassium in the urine can be utilized, the treatment load of a sewage treatment plant can be reduced, the energy consumption is reduced, and the cost is reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A source-separated urine management system, comprising:
the pretreatment device is used for adding medicine, stirring and standing for precipitation treatment to urine;
the liquid inlet of the first container is communicated with the liquid outlet of the pretreatment device;
the liquid inlet of the heating device is communicated with the liquid outlet of the first container and is used for heating the urine entering the heating device;
the membrane distillation device is used for distilling the heated urine so as to enable the urine to form concentrated liquid and distillate, and comprises a urine inlet, a concentrated liquid outlet and a distillate outlet, wherein the urine inlet is communicated with the liquid outlet of the heating device, and the concentrated liquid outlet is communicated with the liquid inlet of the first container.
2. The source separation urine disposal system of claim 1, wherein the pretreatment device comprises a stirring mechanism and a pH detection device;
the stirring mechanism is used for stirring the urine;
the pH value detection device is used for detecting the pH value of the urine.
3. The source separation urine disposal system of claim 2, wherein the pretreatment device further comprises a urine stabilizing vessel and a settling vessel in communication with each other;
the urine stabilizing container is provided with a dosing port so as to add a stabilizing agent into the urine stabilizing container through the dosing port, and the stirring mechanism and the pH value detection device are arranged in the urine stabilizing container;
the sedimentation container is used for standing and precipitating urine, and a liquid outlet of the sedimentation container is communicated with a liquid inlet of the first container.
4. The source-separated urine disposal system of claim 1, further comprising a first water pump and a filter device;
a liquid inlet of the first water pump is communicated with a liquid outlet of the first container, and a liquid outlet of the first water pump is communicated with a liquid inlet of the heating device;
the filtering device is arranged between the liquid outlet of the first water pump and the heating device so as to filter the urine discharged from the liquid outlet of the first water pump.
5. The source-separated urine disposal system of claim 1, further comprising a second container having an inlet port in communication with the distillate discharge port.
6. The source separation urine treatment system of claim 5 wherein the membrane distillation device comprises a direct contact membrane distiller or an air gap membrane distiller;
the direct contact type membrane distiller comprises a cooling liquid inlet and a cooling liquid outlet, the cooling liquid inlet of the direct contact type membrane distiller is communicated with the liquid outlet of the second container, and the cooling liquid outlet of the direct contact type membrane distiller forms the distillate outlet and is communicated with the liquid inlet of the second container;
or the air gap type membrane distiller comprises the distillate outlet, a cooling liquid inlet and a cooling liquid outlet, wherein the cooling liquid inlet of the air gap type membrane distiller is communicated with the liquid outlet of the second container, and the cooling liquid outlet of the air gap type membrane distiller is communicated with the liquid inlet of the second container.
7. The source-separated urine handling system of claim 6 further comprising a cooler;
the cooler is arranged between the cooling liquid inlet of the direct contact type membrane distiller and the second container or between the cooling liquid inlet of the air gap type membrane distiller and the second container, and is used for cooling the distillate.
8. The source separation urine treatment system of claim 1 wherein the membrane distillation device comprises a gas swept membrane distiller and a first condenser;
the air sweeping type membrane distiller comprises a sweeping gas inlet and a water vapor exhaust outlet, wherein the sweeping gas inlet is communicated with a gas source, the water vapor exhaust outlet is communicated with the gas inlet of the first condenser, and a liquid outlet of the first condenser forms the distillate outlet;
alternatively, the membrane distillation apparatus comprises a reduced pressure membrane distiller and a second condenser;
the reduced pressure type membrane distiller comprises a water vapor outlet, the water vapor outlet is communicated with the second condenser, an air outlet of the second condenser is communicated with an air extractor, and a liquid outlet of the second condenser forms the distillate outlet.
9. The source-separated urine handling system of claim 1 wherein the heating device is a solar heating device or a heat pump heating device.
10. A source-separated urine processing method implemented based on the source-separated urine processing system according to any one of claims 1 to 9, comprising the steps of:
adding Ca (OH) to urine in a pretreatment device2And/or NaOH and stirring until the pH of the urine is greater than or equal to 10.5;
standing the urine with the pH value of more than or equal to 10.5;
introducing the supernatant of the standing urine into a first container;
introducing the urine in the first container into a heating device for heating;
introducing the heated urine into a membrane distillation device for distillation;
introducing a concentrated solution produced by the distillation into the first container.
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| CN202111228312.4A CN114180766B (en) | 2021-10-21 | 2021-10-21 | Source separation urine processing system and method |
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| CN202111228312.4A CN114180766B (en) | 2021-10-21 | 2021-10-21 | Source separation urine processing system and method |
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| CN114180766A true CN114180766A (en) | 2022-03-15 |
| CN114180766B CN114180766B (en) | 2023-04-07 |
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| CN114684974A (en) * | 2022-04-22 | 2022-07-01 | 北京交通大学 | Source separation urine treatment system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114684974A (en) * | 2022-04-22 | 2022-07-01 | 北京交通大学 | Source separation urine treatment system and method |
| CN114684974B (en) * | 2022-04-22 | 2023-08-11 | 北京交通大学 | Source separation urine treatment system and method |
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