CN111892273A - Negative pressure evaporation drying equipment for excrement - Google Patents
Negative pressure evaporation drying equipment for excrement Download PDFInfo
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- CN111892273A CN111892273A CN202010627925.4A CN202010627925A CN111892273A CN 111892273 A CN111892273 A CN 111892273A CN 202010627925 A CN202010627925 A CN 202010627925A CN 111892273 A CN111892273 A CN 111892273A
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- excrement
- material drying
- negative pressure
- tank
- water
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- 238000001035 drying Methods 0.000 title claims abstract description 108
- 238000001704 evaporation Methods 0.000 title claims abstract description 13
- 230000008020 evaporation Effects 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000000463 material Substances 0.000 claims abstract description 81
- 238000011084 recovery Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000009833 condensation Methods 0.000 claims description 21
- 230000005494 condensation Effects 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 20
- 210000003608 fece Anatomy 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 8
- 239000011229 interlayer Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 238000009835 boiling Methods 0.000 abstract description 6
- 239000010865 sewage Substances 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 3
- 239000011574 phosphorus Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention provides excrement negative-pressure evaporation drying equipment which comprises a power supply system, an excrement drying system, a vacuum negative-pressure system and a condensate water recovery system. The excrement drying system is used for receiving excrement materials and heating the excrement materials, and the vacuum negative pressure system is used for forming a negative pressure environment in the excrement drying system and reducing the boiling point of water in the excrement materials. The vapor generated when the excrement is evaporated flows into the condensed water recovery system to be cooled and condensed into liquid water, and finally the liquid water is discharged. The power supply system is used for supplying electric energy to the excrement drying system, the vacuum negative pressure system and the condensate water recovery system. The device provided by the invention can be arranged in a public toilet, can directly treat the excrement, reduces manual treatment links, realizes that the excrement can realize domestic sewage reduction treatment, can save water resources, recovers valuable resources such as nitrogen, phosphorus and the like, realizes energy recycling, and can quickly realize excrement treatment in relatively centralized areas of people such as families, hospitals, high-speed railways and the like.
Description
Technical Field
The invention relates to the technical field of domestic sewage treatment, in particular to a negative-pressure excrement evaporation and drying device.
Background
With the improvement of living standard of people, the requirements of people on living quality are higher and higher, and the environmental safety awareness is stronger and stronger, so that the living life and working environment of people need to be improved urgently. At present, the excrement of the public toilet is collected regularly and manually, so that time and labor are wasted, a special place is required for centralized treatment, and a large amount of energy is consumed.
Disclosure of Invention
The embodiment of the invention provides a negative-pressure evaporation drying device for excrement, which is used for providing a device for on-site treatment of toilet excrement.
In order to achieve the purpose, the invention adopts the following technical scheme.
The negative pressure excrement evaporation and drying equipment is characterized by comprising a power supply system, an excrement drying system, a vacuum negative pressure system and a condensate water recovery system;
excrement mummification system includes: a material drying tank; a feeding device and a discharging device which are respectively connected with the material drying tank; the material drying pool is provided with a temperature control interlayer and a heating device;
the vacuum negative pressure system comprises a vacuum pump hermetically connected with the material drying pool and a pressure control valve positioned between the material drying pool and the vacuum pump;
the condensate recovery system includes: the condensation structure is communicated with the material drying tank; the water outlet device is connected with the condensation structure;
the power supply system is used for supplying electric energy to the excrement drying system, the vacuum negative pressure system and the condensate water recovery system.
Preferably, the feeding device and the discharging device are respectively a feeding pipeline and a discharging pipeline, the feeding pipeline is provided with a first control valve, and the discharging pipeline is provided with a second control valve; the heating device is a heating belt which is arranged around the wall and the bottom of the material drying tank.
Preferably, the feeding device is positioned at the top of the material drying pool, and the discharging device is positioned at the bottom side part of the material drying pool.
Preferably, the vacuum pump is positioned above the material drying pool and is connected with a pipeline of the material drying pool, and the pressure control valve is connected with a pipeline between the vacuum pump and the material drying pool; the vacuum pump also has a vacuum gauge.
Preferably, the condensing structure includes: the condensation zone is positioned at the top of the material drying pool; a condensed water storage pool positioned at the bottom of the material drying pool; the condensation zone is respectively communicated with the interior of the material drying tank and the condensed water storage tank; the condensed water storage pool is also connected with a water outlet device.
Preferably, the condensate reservoir has an inclined plate at its bottom, which has a high liquid level side and a low liquid level side, via which the condensate reservoir is connected to the water outlet.
Preferably, the water outlet device is a water outlet pipe, and the water outlet pipe is provided with a water stop valve.
Preferably, the condensing structure includes: the pipeline between the condensed water storage tank and the material drying tank is constructed into a condensation zone for condensing liquid water; the condensed water storage pool is also connected with a water outlet device.
Preferably, the power supply system is a solar power supply system, and comprises a solar panel and an electricity storage device which are electrically connected with each other, and the electricity storage device is further electrically connected with the excrement drying system, the vacuum negative pressure system and the condensate water recovery system respectively.
Preferably, the ambient temperature in the material drying pool is 80-140 ℃.
According to the technical scheme provided by the embodiment of the invention, the negative-pressure excrement evaporation and drying equipment comprises a power supply system, an excrement drying system, a vacuum negative-pressure system and a condensate water recovery system. The excrement drying system is used for receiving excrement materials and heating the excrement materials, and the vacuum negative pressure system is used for forming a negative pressure environment in the excrement drying system and reducing the boiling point of water in the excrement materials. The vapor when the excrement evaporates flows into the condensate water recovery system to be cooled and condensed into liquid water, and is finally discharged, so that the excrement can be flushed. The power supply system is used for supplying electric energy to the excrement drying system, the vacuum negative pressure system and the condensate water recovery system. The dried feces can be subjected to subsequent treatment. The device provided by the invention can be arranged in a public toilet, can directly treat the excrement, reduces manual treatment links, realizes that the excrement can realize domestic sewage reduction treatment, can save water resources, recovers valuable resources such as nitrogen, phosphorus and the like, realizes energy recycling, and can quickly realize excrement treatment in relatively centralized areas of people such as families, hospitals, high-speed railways and the like. The power supply system adopts a solar power supply system, can autonomously provide electric energy and reduce energy consumption.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a negative pressure evaporation drying apparatus for feces provided by the present invention;
fig. 2 is a schematic structural diagram of a preferred embodiment of the negative pressure evaporation drying device for feces provided by the invention.
In the figure:
11. the material drying pool 12, the feeding device 121, the first control valve 13, the discharging device 131, the second control valve 14, the temperature control interlayer 15, the heating device 16 and the temperature sensor;
21. a vacuum pump 22, a pressure control valve 23, a vacuum gauge;
31. a condensation zone 311, a condensation plate 32, a condensed water storage tank 321, an inclined plate 33, a water outlet device 331 and a water stop valve;
41. solar panel 42, an electricity storage device.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
Referring to fig. 1 and 2, the invention provides a negative pressure evaporation drying device for feces, which comprises a power supply system, a feces drying system, a vacuum negative pressure system and a condensate water recovery system;
excrement mummification system includes: a material drying tank 11; a feeding device 12 and a discharging device 13 which are respectively connected with the material drying pool 11; the material drying pool 11 is internally provided with a temperature control interlayer 14 and a heating device 15;
the vacuum negative pressure system comprises a vacuum pump 21 which is hermetically connected with the material drying pool 11 and a pressure control valve 22 which is positioned between the material drying pool 11 and the vacuum pump 21;
the condensate recovery system includes: a condensing structure communicated with the material drying tank 11; a water outlet device 33 connected with the condensation structure;
the power supply system is used for supplying electric energy to the excrement drying system, the vacuum negative pressure system and the condensate water recovery system.
The equipment provided by the invention can be arranged in a toilet to directly reduce the quantity of the excrement, the excrement material enters the material drying pool 11 from the feeding device 12, and the feeding device 12 and the discharging device 13 are closed, so that a closed space is formed in the material drying pool 11. The heating device 15 heats and dries the excrement, and the temperature control interlayer 14 is used for keeping the temperature inside the material drying pool 11. The vacuum pump 21 is started to form a negative pressure environment in the material drying tank 11, so that the boiling point of water in the excrement is reduced. Vapor generated when the excrement evaporates flows into the condensation structure to be cooled and condensed into liquid water, and is finally discharged through the water outlet device 33 for flushing a toilet. The dried excrement is input through a discharging device 13 and can be subjected to subsequent treatment.
Further, the feeding device 12 and the discharging device 13 are a feeding line and a discharging line, respectively, the feeding line having a first control valve 121 for controlling the opening/closing of the feeding line, and the discharging line having a second control valve 131 for controlling the opening/closing of the discharging line. In some preferred slightly modified embodiments, the feeding device 12 is located at the top of the material drying tank 11, and the discharging device 13 is located at the bottom side (side bottom position) of the material drying tank 11. The device for negative pressure evaporation drying of excrement with the arrangement can arrange the material drying pool 11 below the side pit, and excrement directly enters the material drying pool 11 through the feeding device 12 by gravity. When the device is in a feeding state, the first control valve 121 is opened, the excrement material to be treated (with the water content of 70% -90%) enters the material drying pool 11, and the first control valve 121 and the second control valve 131 are closed after a certain storage amount is reached to form a closed environment for drying and reducing treatment. The drying time is 150-500min, the second control valve 131 is opened after drying, the dried feces (with the water content of 20-30%) are discharged, and the dehydration rate can reach 50-60%.
In this embodiment, the heating device 15 is wound around the wall and the bottom of the material drying pool 11, so that heat can be uniformly supplied to the material drying pool 11. The temperature control interlayer 14 is made of heat insulating material and is used for preventing heat inside the material drying pool 11 from diffusing outwards quickly. The device is also provided with a temperature sensor 16 positioned in the material drying pool 11 and used for detecting the drying temperature in the material drying pool 11, wherein in the embodiment, the drying temperature in the material drying pool 11 is controlled to be 80-140 ℃, and the drying efficiency of the excrement is ensured.
Further, in some preferred embodiments, the vacuum pump 21 is disposed above the material drying tank 11 and is connected to the material drying tank 11 through a pipeline, so as to facilitate maintenance. The pressure control valve 22 is arranged on a pipeline between the vacuum pump 21 and the material drying tank 11; the vacuum pump 21 also has a vacuum gauge 23. The excrement (with the water content of 70-90%) to be treated enters the material drying tank 11 from the top to be subjected to vacuum and negative pressure, the boiling point of water is reduced to 70-80 ℃, the vacuum meter 23 is arranged on the pump, the pressure control valve 22 is connected with a vacuum pipeline, the reading of the vacuum meter 23 is observed, and the pressure stabilizing pump is controlled to keep the boiling point of water stable.
Further, in some preferred embodiments, the condensing structure includes: a condensing zone 31 positioned at the top of the material drying tank 11; a condensed water storage tank 32 positioned at the bottom of the material drying tank 11; the condensation zone 31 is respectively communicated with the interior of the material drying pool 11 and the condensed water storage pool 32; the condensate reservoir 32 is also connected to a water outlet device 33. Vapor evaporated by heating of the excrement material flows to the condensation zone 31 and is condensed into liquid water, the condensation zone 31 is arranged in the outer side area of the top wall of the material drying pool 11, a channel penetrating through the temperature control interlayer 14 is arranged to communicate with the inside of the material drying pool 11, and condensed water is conveyed through a condensed water storage tank 32 arranged at the bottom of the channel communicating with the outer side area of the side wall of the material drying pool 11. In the present embodiment, the condensation zone 31 has a condensation plate 311.
Furthermore, the bottom of the condensate storage tank 32 has an inclined plate 321, the inclined plate 321 is arranged in an inclined manner, and both sides of the inclined plate 321 form a high liquid level side and a low liquid level side, respectively, through which the condensate storage tank 32 is connected to the water outlet device 33. When the condensed water is discharged, the water at the high liquid level side flows to the low liquid level side by gravity and is discharged through the water outlet device 33, so that the accumulation can be avoided, and the manual operation or the water pumping by an external device is avoided. In this embodiment, the water outlet device 33 is a water outlet pipe having a water stop valve 331 for opening/closing the water outlet device 33. In the embodiment, the condensed water meets the requirement of 'urban sewage recycling urban miscellaneous water quality' (GB/T18920-2002), and can be used for flushing toilets.
In other preferred embodiments, as shown in fig. 2, the condensing structure includes: the condensed water storage tank 32 is connected with the material drying tank 11 through a pipeline, the vapor heated and evaporated by the excrement material flows into the pipeline between the excrement material and the condensed water storage tank, and the vapor is condensed into liquid water in the pipeline due to the fact that the pipeline is usually a metal pipeline and does not have heat preservation capacity. The line is thus configured as a condensation zone 31 for condensing water vapour. A water outlet device 33 is connected to one side of the condensed water storage tank 32 for discharging water. As in the previous embodiment, the water outlet device 33 is a water outlet pipe having a water stop valve 331 for opening/closing the water outlet device 33. With the condensation structure arranged as above, the condensed water storage tank 32 is independently arranged and can be flexibly arranged according to the position of the toilet.
In the preferred embodiment provided by the invention, the power supply system is a solar power supply system and can autonomously provide electric energy for the equipment. The power supply system comprises a solar cell panel 41 and an electricity storage device 42 which are electrically connected with each other, and the electricity storage device 42 is also electrically connected with the excrement drying system, the vacuum negative pressure system and the condensed water recovery system respectively. Because solar energy power generation changes the unstable characteristics along with meteorological condition, the electric energy that the electricity storage box will produce is stored for under the insufficient circumstances of sunshine, provides continuous stable electric energy for this equipment. In this embodiment, the specific layout manner of the solar power supply system is based on the prior art, and is not described herein again.
In summary, the present invention provides a negative pressure evaporation drying apparatus for feces, which comprises a power supply system, a feces drying system, a vacuum negative pressure system and a condensate water recovery system. The excrement drying system is used for receiving excrement materials and heating the excrement materials, and the vacuum negative pressure system is used for forming a negative pressure environment in the excrement drying system and reducing the boiling point of water in the excrement materials. The vapor when the excrement evaporates flows into the condensate water recovery system to be cooled and condensed into liquid water, and is finally discharged, so that the excrement can be flushed. The power supply system is used for supplying electric energy to the excrement drying system, the vacuum negative pressure system and the condensate water recovery system. The dried feces can be subjected to subsequent treatment. The device provided by the invention can be arranged in a public toilet, can directly treat the excrement, reduces manual treatment links, realizes that the excrement can realize domestic sewage reduction treatment, can save water resources, recovers valuable resources such as nitrogen, phosphorus and the like, realizes energy recycling, and can quickly realize excrement treatment in relatively centralized areas of people such as families, hospitals, high-speed railways and the like. The power supply system adopts a solar power supply system, can autonomously provide electric energy and reduce energy consumption.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The negative pressure excrement evaporation and drying equipment is characterized by comprising a power supply system, an excrement drying system, a vacuum negative pressure system and a condensate water recovery system;
the excrement drying system comprises: a material drying tank; a feeding device and a discharging device which are respectively connected with the material drying tank; the material drying pool is provided with a temperature control interlayer and a heating device;
the vacuum negative pressure system comprises a vacuum pump which is hermetically connected with the material drying pool and a pressure control valve which is positioned between the material drying pool and the vacuum pump;
the condensate recovery system includes: the condensation structure is communicated with the material drying tank; the water outlet device is connected with the condensation structure;
and the power supply system is used for providing electric energy for the excrement drying system, the vacuum negative pressure system and the condensate water recovery system.
2. The apparatus according to claim 1, wherein the feeding device and the discharging device are a feeding line and a discharging line, respectively, the feeding line having a first control valve, the discharging line having a second control valve; the heating device is a heating belt, and the heating belt is arranged around the wall and the bottom of the material drying tank.
3. The apparatus according to claim 2, wherein the feeding device is located at the top of the material drying tank, and the discharging device is located at the bottom side of the material drying tank.
4. The apparatus according to claim 1, wherein the vacuum pump is located above the material drying tank and is connected to the material drying tank through a pipeline, and the pressure control valve is connected to a pipeline between the vacuum pump and the material drying tank; the vacuum pump also has a vacuum gauge.
5. The apparatus of claim 1, wherein the condensing structure comprises: the condensation zone is positioned at the top of the material drying pool; the condensed water storage pool is positioned at the bottom of the material drying pool; the condensation zone is respectively communicated with the interior of the material drying tank and the condensed water storage tank; the condensed water storage tank is also connected with the water outlet device.
6. The apparatus according to claim 5, characterized in that the condensate reservoir has an inclined plate at its bottom, which has a high liquid level side and a low liquid level side, via which the condensate reservoir is connected to the water outlet device.
7. The apparatus of claim 5, wherein the water outlet device is a water outlet pipe having a water stop valve.
8. The apparatus of claim 1, wherein the condensing structure comprises: the pipeline between the condensed water storage tank and the material drying tank is constructed into a condensation zone for condensing liquid water; the condensed water storage tank is also connected with the water outlet device.
9. The apparatus of claim 1, wherein the power supply system is a solar power supply system, and comprises a solar panel and an electricity storage device electrically connected to each other, and the electricity storage device is further electrically connected to the feces drying system, the vacuum negative pressure system and the condensed water recovery system respectively.
10. The apparatus according to any one of claims 1 to 7, wherein the ambient temperature in the material drying tank is 80-140 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010627925.4A CN111892273A (en) | 2020-07-02 | 2020-07-02 | Negative pressure evaporation drying equipment for excrement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010627925.4A CN111892273A (en) | 2020-07-02 | 2020-07-02 | Negative pressure evaporation drying equipment for excrement |
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| CN111892273A true CN111892273A (en) | 2020-11-06 |
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| CN202010627925.4A Pending CN111892273A (en) | 2020-07-02 | 2020-07-02 | Negative pressure evaporation drying equipment for excrement |
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|---|---|---|---|---|
| KR980009204A (en) * | 1996-07-31 | 1998-04-30 | 갈원홍 | Method and apparatus for concentrating livestock manure |
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| CN101357810A (en) * | 2008-08-28 | 2009-02-04 | 蔡海涛 | Vacuum collection and vacuum treatment process of fecal sewage and equipment thereof |
| CN201879603U (en) * | 2010-12-06 | 2011-06-29 | 郑永祥 | Discharge-free water-flushing-free closet |
| CN103848649A (en) * | 2012-11-28 | 2014-06-11 | 黄建斌 | Production method and equipment for conversion of human faeces into fertilizer and fertilizer produced thereby |
| CN109776113A (en) * | 2019-03-26 | 2019-05-21 | 上海荆虹实业有限公司 | A kind of night soil-treatment reuse means and processing method |
| CN110104931A (en) * | 2019-04-26 | 2019-08-09 | 陈亚国 | A kind of waste treatment systems and processing method |
| CN212293282U (en) * | 2020-07-02 | 2021-01-05 | 北京交通大学 | Negative pressure evaporation drying equipment for excrement |
-
2020
- 2020-07-02 CN CN202010627925.4A patent/CN111892273A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR980009204A (en) * | 1996-07-31 | 1998-04-30 | 갈원홍 | Method and apparatus for concentrating livestock manure |
| CN2777084Y (en) * | 2005-01-04 | 2006-05-03 | 吕海清 | Sanitary ware specially used for environmental protection toilet |
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| CN201879603U (en) * | 2010-12-06 | 2011-06-29 | 郑永祥 | Discharge-free water-flushing-free closet |
| CN103848649A (en) * | 2012-11-28 | 2014-06-11 | 黄建斌 | Production method and equipment for conversion of human faeces into fertilizer and fertilizer produced thereby |
| CN109776113A (en) * | 2019-03-26 | 2019-05-21 | 上海荆虹实业有限公司 | A kind of night soil-treatment reuse means and processing method |
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| 金听祥等: "《制冷技术原理与应用基础》", 30 April 2020, 机械工业出版社, pages: 82 - 83 * |
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