CN111297242A - Public dry pail latrine of plateau severe cold farming-pasturing area ecological health - Google Patents

Public dry pail latrine of plateau severe cold farming-pasturing area ecological health Download PDF

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Publication number
CN111297242A
CN111297242A CN202010289310.5A CN202010289310A CN111297242A CN 111297242 A CN111297242 A CN 111297242A CN 202010289310 A CN202010289310 A CN 202010289310A CN 111297242 A CN111297242 A CN 111297242A
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septic tank
chamber
tank reactor
toilet
excrement
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Inventor
赵树明
张学涛
曹德荣
王培蕾
卡本也合
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Huangnan Architectural Design Institute
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Huangnan Architectural Design Institute
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K11/00—Closets without flushing; Urinals without flushing; Chamber pots; Chairs with toilet conveniences or specially adapted for use with toilets
    • A47K11/02—Dry closets, e.g. incinerator closets
    • 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
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00—Fertilisers from human or animal excrements, e.g. manure
    • C05F3/04—Fertilisers from human or animal excrements, e.g. manure from human faecal masses
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00—Fertilisers from human or animal excrements, e.g. manure
    • C05F3/06—Apparatus for the manufacture
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Manufacturing & Machinery (AREA)
  • Molecular Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Treatment Of Sludge (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Abstract

The invention relates to the technical field of sanitary public dry toilets, in particular to an ecological sanitary public dry toilet in a severe cold highland farming and pasturing area. The utility model provides a public dry latrine of plateau severe cold farming-pastoral area ecological health, includes male and female lavatory room, excrement urine diversity stool pot defecation mouth that the lavatory is indoor to be set up links to each other with septic tank reactor room, septic tank reactor room adjacent side is provided with two rooms of septic tank reactor, is provided with excrement mouth and interventricular flashboard between two rooms, septic tank reactor room, two room bottoms are provided with the heat coil pipe, and the lower part is provided with phase transition heat-retaining structure, phase transition heat-retaining structure all is provided with the heat coil pipe, the heat coil pipe is through dividing water collector and heat medium circulating pump, solar collector intercommunication. The first chamber and the second chamber of the septic tank reactor are provided with an air inlet pipe, an exhaust pipe and an exhaust fan. The dry toilet is powered by a self-contained wind-solar complementary power supply system. The invention provides a sanitary public dry toilet which is suitable for severe cold farming and pasturing areas in plateau, has no water supply, no drainage, no power supply and no heat supply and has the excrement and urine diversity operation.

Description

Public dry pail latrine of plateau severe cold farming-pasturing area ecological health
Technical Field
The invention relates to the technical field of sanitary public dry toilets, in particular to an ecological sanitary public dry toilet in a severe cold highland farming and pasturing area.
Background
The harmless treatment of excrement is the bottom line requirement for preventing and treating water pollution, intestinal infectious diseases and parasitic diseases in sanitary toilets.
The anaerobic digestion of excrement is a treatment process for decomposing organic substances in excrement by using facultative bacteria and anaerobic bacteria to perform anaerobic biochemical reaction, is a main link for realizing 'four transformation' (reduction, stabilization, harmlessness and recycling) of excrement, and is most widely applied.
The exploration of the ecological dry toilet is more suitable for the upstream area of the river source and the remote poor farming and pasturing area. In northwest frigid and arid agricultural pastoral areas, the double-urn funnel type toilet with a plurality of advantages is popular; the herdsmen in the Sichuan Tibetan area use the excrement and urine diversity type toilet stool to obtain higher ecological value; the Datong county of Qinghai province adopts the fermentation of human and animal excreta to prepare fertilizer and the biogas treatment to efficiently treat the excreta; in the rural areas with the high altitude of 3200 meters, 2600-year-old rhododendron thamnoides and 3200 meters, a toilet is built at the first floor, excrement of people, livestock and poultry is mixed, plant ash is covered, water and odor are avoided, flies are prevented, and compost is cleared and returned to the field twice a year.
The method is applied to high-altitude cold and dry farming and pasturing areas, ditch type underground infiltration treatment systems, natural composting and decomposition methods, aerobic high-temperature fermentation methods, anaerobic high-temperature digestion methods and the like. The composting fermentation by utilizing solar energy is the excrement treatment mode with the most economic and technical advantages, and the temperature-consumption amount needs to be concerned. The feces and urine are separated and can reduce the treatment difficulty, and the feces are covered by biological powder materials such as straw powder, sawdust, plant ash, furnace slag, probiotics and the like, and decomposed and harmless compost can be decomposed by using solar energy, so that the utilization effect is improved.
The odor of the dry toilet can be eliminated by adopting the modes of absorption, adsorption, oxidation, masking, dilution and diffusion, filtration, composting and the like. The negative pressure deodorization is tried in Kunming Yiliang county and Dongchuan district, Qiubei county and Xiyao county of Wenshan, Lijiang Lustau lake, etc., and villagers have good response and can accept.
In severe cold farming and pasturing areas in plateaus, the environmental conditions are special, the slow heating period is 6-10 months long in freezing of excrement and urine, the influence of weather ecological power factors (mainly air temperature) is most obvious, the environmental temperature required by excrement microorganism metabolism cannot be kept, the microorganism community metabolism is attenuated or dead, and the most critical and effective harmless anaerobic digestion is difficult to realize. In addition, the population is rare, the cost of the facility matching is too high, and the application significance of the dry latrine is profound.
Disclosure of Invention
The invention provides a public dry toilet which is suitable for a severe cold farming and pasturing area in plateau, has no water supply, no drainage, no power supply and no heat supply, and has excrement and urine diversity running, the functions of a public dry toilet manure pit are upgraded, the problems of excrement freezing and anaerobic digestion stop in the heating period are solved, the toilet environment and sanitary conditions are improved, pathogen transmission is prevented, the excrement is harmless and recyclable, and the toilet revolution in the severe cold area is supported. In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a public dry pail latrine of plateau severe cold farming-pastoral area ecological health which characterized in that: the method comprises the following steps: a toilet body, a first septic tank reactor chamber 2 and a second septic tank reactor chamber 3;
the excrement and urine collecting type toilet bowl 5 arranged in the toilet body is respectively connected with the first septic tank reactor chamber 2 and the urine storage tank through pipelines;
a second septic tank reactor chamber 3 is arranged on the side adjacent to the first septic tank reactor chamber 2, and a feces passing port and an interchamber flashboard 8 are arranged between the two chambers;
the bottoms of the first septic tank reactor chamber 2 and the second septic tank reactor chamber 3 are provided with thermal coil pipes, and phase-change heat storage structures are arranged below the first septic tank reactor chamber 2 and the second septic tank reactor chamber 3;
the first septic tank reactor chamber 2 and the second septic tank reactor chamber 3 are provided with an air inlet pipe, an exhaust pipe and an exhaust fan;
the phase-change heat storage structures are provided with heat coil pipes;
the heat coil is communicated with the heat medium circulating pump and the solar heat collector through a water separating collector;
the dry toilet is powered by a self-contained wind-solar complementary power supply system.
Preferably, the equipment room 1 and the tool management room 4 are arranged in the toilet body.
Preferably, the first septic tank reactor chamber 2 is a material collecting chamber, and the second septic tank reactor chamber 3 is a clinker digesting chamber.
Preferably, the arrangement of the phase-change heat storage structure is determined by heat balance calculation.
A harmless treatment method for excrement of an ecological and sanitary public dry toilet in a severe cold highland farming and pasturing area is characterized by comprising the following steps:
the method comprises the following steps: separating the excrement and urine through an excrement and urine separating excrement and urine collector 5 and respectively flowing to an excrement device first chamber 2 and an urine storage pool;
step two: the raw material collected in the first chamber 2 of the dung cleaner flows to the second chamber 3 of the dung cleaner through anaerobic digestion;
step three: and (3) the clinker collected in the second chamber 3 of the septic tank is cleared and fished after being subjected to anaerobic digestion and storage for 180 days again.
Furthermore, the clearing period can be divided into 2-3 times of clearing application corresponding to the growth condition of crops within 90-270 days.
The invention provides a sanitary public dry toilet which is suitable for severe cold farming and pasturing areas in plateau, has no water supply, no drainage, no power supply and no heat supply and has the excrement and urine diversity operation.
The exhaust fan keeps the toilet room at negative pressure during toilet flushing and keeps the odor concentration of the first septic tank reactor room and the second septic tank reactor room in a safe area.
A building body. The land area is controlled to be 60-100 square meters, the building area is 38 square meters, the number of designed users is 45, and a male toilet room, a female toilet room, a management tool room and the like are arranged. In addition, the toilet is provided with an underground equipment room, a door, a high window, a toilet partition, an identification warning system, an outdoor garbage room, a ramp, a clothes hook, a dressing mirror and the like, and the humanized toilet function is properly improved in the aspects of human engineering, comfort level and the like.
A septic tank reactor. Reactor with underground septic tank1 seat is divided into a first septic tank reactor chamber and a second septic tank reactor chamber to prevent soil and underground water from being polluted. The first chamber is a raw material collecting chamber, the second chamber is a clinker digesting chamber, excrement after collecting and storing the excrement and urine, the raw material and clinker are treated in different chambers without mixing, and the second chamber of the septic tank reactor is a main place for changing raw material into clinker through anaerobic digestion to realize harmlessness and recycling. The septic tank reactor is closed and provided with a cover, and meets the requirements of excrement pushing flow guide, mechanical cleaning and structure. The first chamber and the second chamber of the septic tank reactor are respectively provided with an air inlet passage, an air exhaust passage and a ventilation and exhaust device, and CO is generated on site through numerical simulation2The gas test experiment meets the requirements of biogas discharge and toilet deodorization regulation, so that the toilet has the functions of ventilation, exhaust and deodorization.
The design of the slope, the gate plate, the burial depth, the inspection well and the like at the bottoms of the first septic tank reactor chamber and the second septic tank reactor chamber respectively considers the excrement raw material flow (sliding), the transfer between the chambers and the clinker cleaning, and the effective volumes of the first chamber and the second chamber are adapted to the raw material collection, anaerobic digestion and clinker cleaning periods.
A urine storage pool. 1 seat of underground urine storage pool is arranged, and the effective volume is 10m3Designing a clearing period for 60 days.
The ecological and sanitary public dry toilet in the severe cold highland farming and pasturing area has the following beneficial effects:
(1) the heat collection and supply system meets the peak regulation requirement of heat supply in extreme weather, reserves the heat supply amount for 3-5 days, and avoids large equipment load. The 4 sets of heat coils are communicated with the heat medium circulating pump through the water separating collector to transmit required heat, so that the temperature of the excrement in the heating period is more than or equal to 5 ℃, and the temperature requirement of the excrement decomposition in 4 weeks in the non-heating period is met.
(2) The invention can be used in the high severe cold area with altitude of 2000 plus 4000 meters and heating period of 6-10 months, and in the environment without electricity or heat.
(3) The invention obviously reduces the facility matching cost and realizes harmlessness and reclamation.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural view of the septic tank of the present invention.
1 underground equipment room; 2, a first chamber of a septic device; 3, a second chamber of the septic device; 4 tool management room; 5, collecting excrement and urine into a toilet bowl; 8 interchamber shutters.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples, which are used for illustrating the present invention and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1 and 2, the ecological and sanitary public dry toilet for the severe cold plateau farming and pasturing area is characterized in that: the method comprises the following steps: a toilet body, a first septic tank reactor chamber 2 and a second septic tank reactor chamber 3;
the excrement and urine collecting type toilet bowl 5 arranged in the toilet body is respectively connected with the first septic tank reactor chamber 2 and the urine storage tank through pipelines;
a second septic tank reactor chamber 3 is arranged on the side adjacent to the first septic tank reactor chamber 2, and a feces passing port and an interchamber flashboard 8 are arranged between the two chambers;
the bottoms of the first septic tank reactor chamber 2 and the second septic tank reactor chamber 3 are provided with thermal coil pipes, and phase-change heat storage structures are arranged below the first septic tank reactor chamber 2 and the second septic tank reactor chamber 3;
the first septic tank reactor chamber 2 and the second septic tank reactor chamber 3 are provided with an air inlet pipe, an exhaust pipe and an exhaust fan;
the phase-change heat storage structures are provided with heat coil pipes;
the heat coil is communicated with the heat medium circulating pump and the solar heat collector through a water separating collector;
the dry toilet is powered by a self-contained wind-solar complementary power supply system.
The toilet is characterized in that an equipment room 1 and a tool management room 4 are arranged in the toilet body.
The first septic tank reactor chamber 2 is a material collecting chamber, and the second septic tank reactor chamber 3 is a clinker digesting chamber.
The arrangement of the phase-change heat storage structure is determined according to heat balance calculation.
A harmless treatment method for excrement of an ecological and sanitary public dry toilet in a severe cold highland farming and pasturing area is characterized by comprising the following steps:
the method comprises the following steps: separating the excrement and urine through an excrement and urine separating excrement and urine collector 5 and respectively flowing to an excrement device first chamber 2 and an urine storage pool;
step two: the raw material collected in the first chamber 2 of the dung cleaner flows to the second chamber 3 of the dung cleaner through anaerobic digestion;
step three: and (3) the clinker collected in the second chamber 3 of the septic tank is cleared and fished after being subjected to anaerobic digestion and storage for 180 days again.
The clearing period can be divided into 2-3 times of clearing application corresponding to the growth condition of crops within 90-270 days.
The heat collection and supply system meets the peak regulation requirement of heat supply in extreme weather, reserves the heat supply amount for 3-5 days, and avoids large equipment load. The 4 sets of heat coils are communicated with the heat medium circulating pump through the water separating collector to transmit required heat, so that the temperature of the excrement in the heating period is more than or equal to 5 ℃, and the temperature requirement of the excrement decomposition in 4 weeks in the non-heating period is met.
The invention can be used in the high severe cold area with altitude of 2000 plus 4000 meters and heating period of 6-10 months, and in the environment without electricity or heat.
The invention obviously reduces the facility matching cost and realizes harmlessness and reclamation.
Example 2
A solar feces harmless reactor in a severe cold region is designed and constructed based on the reactor, and a public dry toilet is constructed at an elevation of 2550 meters. The dry latrine civil engineering part comprises a building main body, a septic tank reactor and a urine storage tank; the dry toilet equipment part comprises a power generation, storage and supply system, a heating, heat storage and supply system and a phase change heat storage structure.
A building body. The land area is controlled to be 60-100 square meters, the building area is 38 square meters, the number of designed users is 45, and a male toilet room, a female toilet room, a management tool room and the like are arranged. In addition, the toilet is provided with an underground equipment room, a door, a high window, a toilet partition, an identification warning system, an outdoor garbage room, a ramp, a clothes hook, a dressing mirror and the like, and the humanized toilet function is properly improved in the aspects of human engineering, comfort level and the like.
A septic tank reactor. The reactor is provided with a 1 seat of an underground septic tank reactor, which is divided into a first chamber of the septic tank reactor and a second chamber of the septic tank reactor. Is composed ofThe C30 reinforced concrete structure has the wall thickness of 250mm, meets the anti-permeability regulation and prevents the pollution of soil and underground water. The septic tank reactor is closed and provided with a cover, and meets the requirements of excrement pushing flow guide, mechanical cleaning and structure. The effective volume of the second chamber of the septic tank reactor is 4.5 cubic meters, the design cleaning period is 180 days, the first chamber and the second chamber of the septic tank reactor are respectively provided with an air inlet passage, an air exhaust passage and a ventilation and exhaust device, and CO is generated on site through numerical simulation2The gas test experiment meets the requirements of biogas discharge and toilet deodorization regulation, so that the toilet has the functions of ventilation, exhaust and deodorization.
A urine storage pool. 1 seat of underground urine storage pool is arranged, and the effective volume is 10m3Designing a clearing period for 60 days.
An electric heating device. The roof is provided with 1 group of solar panels, the toilet is externally provided with 1 wind driven generator, and the storage battery 1 group is arranged to form a light-wind complementary power supply system, so that the power requirements of four-season lighting, indication, an exhaust fan, a heat medium circulating pump and the like are met. The roof is provided with 1 set of solar heat collection device, the lower parts of the first chamber and the second chamber of the septic tank reactor are respectively provided with 1 set of phase change heat storage structure, and the requirements of excrement microbial metabolism in winter extreme weather and excrement accelerated decomposition harmless heat utilization in spring, summer and autumn are met.
And (6) processing and clearing. The first septic tank reactor is a material collecting chamber, and the effective volume is calculated by 90 days and is moved for 1 time per week; the second chamber of the septic tank reactor is a clinker digestion chamber, and the effective volume is counted by 180 days. By scientifically determining the cleaning period and the timing, raw materials and clinker are not mixed in 30 days in an anaerobic digestion and decomposition period, and the harmless guarantee rate of excrement is obviously improved. The clearing period can be divided into 2-3 times for clearing and applying within 90-270 days corresponding to the growth condition of crops. Before the manure cleaning is used, the heat increasing power supply can be adjusted 3-7 days in advance by combining weather and meteorological conditions, the digestion and the decomposition are accelerated, the harmless effect is ensured, and the operation is more flexible.
TABLE 1 dynamic process summary of feces storage in septic tank reactor chamber one and septic tank reactor chamber two
Figure BDA0002449777980000051
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; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (7)

1. The utility model provides a public dry pail latrine of plateau severe cold farming-pastoral area ecological health which characterized in that: the method comprises the following steps: a toilet body, a first septic tank reactor chamber (2) and a second septic tank reactor chamber (3);
a feces-urine diversity type toilet (5) arranged in the toilet body is respectively connected with a first chamber (2) of the septic tank reactor and a urine storage tank through pipelines;
a septic tank reactor second chamber (3) is arranged on the adjacent side of the septic tank reactor first chamber (2), and a feces passing port and an interchamber flashboard (8) are arranged between the two chambers;
the bottom parts of the first septic tank reactor chamber (2) and the second septic tank reactor chamber (3) are provided with thermal coil pipes, and phase-change heat storage structures are arranged below the first septic tank reactor chamber (2) and the second septic tank reactor chamber (3);
the septic tank reactor first chamber (2) and the septic tank reactor second chamber (3) are provided with an air inlet pipe, an exhaust pipe and an exhaust fan;
the phase-change heat storage structures are provided with heat coil pipes;
the heat coil is communicated with the heat medium circulating pump and the solar heat collector through a water separating collector;
the dry toilet is powered by a self-contained wind-solar complementary power supply system.
2. The ecological and sanitary public dry toilet in the severe cold plateau farming and pasturing area as claimed in claim 1, wherein: the toilet is characterized in that an equipment room (1) and a tool management room (4) are arranged in the toilet body.
3. The ecological and sanitary public dry toilet in the severe cold plateau farming and pasturing area as claimed in claim 1, wherein: the first septic tank reactor chamber (2) is a material collecting chamber.
4. The ecological and sanitary public dry toilet in the severe cold plateau farming and pasturing area as claimed in claim 1, wherein: the second septic tank reactor chamber (3) is a clinker digestion chamber.
5. The ecological and sanitary public dry toilet in the severe cold plateau farming and pasturing area as claimed in claim 1, wherein: the arrangement of the phase-change heat storage structure is determined according to heat balance calculation.
6. A harmless treatment method for excrement of an ecological and sanitary public dry toilet in a severe cold highland farming and pasturing area is characterized by comprising the following steps:
the method comprises the following steps: separating the excrement and urine through an excrement and urine separating excrement and urine collector (5) and respectively flowing to an excrement device chamber (2) and an urine storage pool;
step two: raw materials collected in the first chamber (2) of the dung cleaner flow to the second chamber (3) of the dung cleaner through anaerobic digestion;
step three: and (3) the clinker collected in the second chamber (3) of the septic tank is cleared and fished after being subjected to anaerobic digestion and storage for 180 days again.
7. The method for harmlessly treating excrement of the ecological sanitary public dry toilet in the severe cold plateau farming and pasturing area as claimed in claim 7, is characterized in that: the clearing period can be divided into 2-3 times of clearing application corresponding to the growth condition of crops within 90-270 days.
CN202010289310.5A 2020-04-14 2020-04-14 Public dry pail latrine of plateau severe cold farming-pasturing area ecological health Pending CN111297242A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114593532A (en) * 2020-12-03 2022-06-07 天津大学 High and cold area solar energy intensification heat-retaining heat transfer system fertile reactor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114593532A (en) * 2020-12-03 2022-06-07 天津大学 High and cold area solar energy intensification heat-retaining heat transfer system fertile reactor

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