CN107459231A - One fowl and livestock dirt transfer processing system and manure of livestock and poultry pollution discharge treatment method - Google Patents
One fowl and livestock dirt transfer processing system and manure of livestock and poultry pollution discharge treatment method Download PDFInfo
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- CN107459231A CN107459231A CN201710940016.4A CN201710940016A CN107459231A CN 107459231 A CN107459231 A CN 107459231A CN 201710940016 A CN201710940016 A CN 201710940016A CN 107459231 A CN107459231 A CN 107459231A
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- 238000012545 processing Methods 0.000 title claims abstract description 55
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Classifications
-
- 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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
Abstract
The invention provides a fowl and livestock dirt transfer processing system and manure of livestock and poultry pollution discharge treatment method.In manure of livestock and poultry dirt transfer processing system of the present invention, including manure of livestock and poultry dirt collection system, fermentation process system, natural filtration system, and artificial ecology processing system, pass through the dirty cost for carrying out spontaneous fermentation filtering and processing, can effectively reducing poultry treatment for cow manure of manure of livestock and poultry, the permanent mechanism of poultry treatment for cow manure is formed, and solves the ecological problem of the dirty pollution of manure of livestock and poultry.Meanwhile manure of livestock and poultry pollution discharge treatment method of the present invention carries out poultry treatment for cow manure with manure of livestock and poultry dirt transfer processing system of the present invention, can not only effectively reduce processing cost, additionally it is possible to realizes the dirty scale processing of excrement.
Description
Technical field
The present invention relates to environmental technology field, in particular to a fowl and livestock dirt transfer processing system and manure of livestock and poultry
Pollution discharge treatment method.
Background technology
With China's agricultural modernization process, large-scale cultivation industry develops rapidly, and the scale of plant also gradually expands.With
This simultaneously, plant and its surrounding enviroment problem are increasingly severe, pollution, including the dirt to air as caused by feces of livestock and poultry
Dye, the pollution to water body, soil etc., also have become and restrict one of principal element that animal husbandry further develops.
Organic matter in livestock and poultry feces can produce CH through anaerobic digestion4、NH3、H2S、(NH4)2S, the stench such as scatol and have
Evil gas；Breeding wastewater is a kind of high concentrated organic wastewater simultaneously, and CODCr loads are between 2000~20000mg/L, average out to
Contain the nutriments such as substantial amounts of nitrogen, phosphorus at concentrations up to mg/L up to ten thousand to 6000~10000mg/L, BOD5.
The pollutants such as fowl and animal excrement also have become the main environomental pollution source in current China rural area, according to State Environmental Protection Administration
The Monitoring Data of 2004 shows that livestock culture pollution has accounted for the 35~40% of rural environmental pollution.And by 2006,
The COD total emission volumns of aquaculture industry of China have reached 1.1 hundred million tons, and about 1200 tons of ammonia nitrogen discharge capacity, its pollutional load alreadys exceed
The summation of industrial wastewater and municipal pollution contaminated wastewater load, turn into the root of China's rural pollution, to the production and living of people
And environment causes immeasurable influence.
It is dirty for manure of livestock and poultry, the especially dirty processing of large-scale cultivation manure of livestock and poultry, also all it is that people want to solve always
Major issue, and this people have also been carried out with many research and effort.At present, the major way of livestock and poultry feces processing, is foster
Field is grown by taking the processing of the pollutants such as some easy treating methods and power-equipment fowl and animal excrement.
However, the pollutant process method such as existing fowl and animal excrement also has the drawbacks of a lot, essentially consist in：
1st, fowl and animal excrement processing is automated mainly to complete by power-equipment, although treatment effect can be reached, by
It is higher in operating cost, and culture benefit is larger by market fluctuation, producer in use for some time, just abandons using,
Environmental protection equipment is just as ornaments.
2nd, simultaneously, although although some plants take some simple treatment for cow manure measures, at feces of farm
Reason is not thorough, however it remains larger environmental protection pressure, faces the risk be punished and closed down at any time.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a fowl and livestock dirt transfer processing system, in manure of livestock and poultry dirt of the present invention
Turn in processing system, including manure of livestock and poultry dirt collection system, fermentation process system, natural filtration system, and artificial ecology processing
System, by the dirty cost for carrying out spontaneous fermentation filtering and processing, can effectively reducing poultry treatment for cow manure of manure of livestock and poultry, form fowl
The permanent mechanism for the treatment of for cow manure is raiseeed, and solves the ecological problem of manure of livestock and poultry pollution.
The second object of the present invention is to provide a fowl and livestock pollution discharge treatment method, in the inventive method, with fowl of the present invention
Animal manure dirt transfer processing system carries out poultry treatment for cow manure, can not only effectively reduce processing cost, additionally it is possible to realizes excrement dirt
Scale is handled.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
One fowl and livestock dirt transfer processing system, the manure of livestock and poultry dirt transfer processing system include：Feces of farm is collected
System, excrement dirt fermentation process system, natural filtration system, and artificial wet land treating system.
Preferably, in manure of livestock and poultry dirt transfer processing system of the present invention, the natural filtration system filters for Powerless
System；Wherein, the natural filtration system includes being equipped with the filter tank of filtering layer of sand, and by natural filtration system by after fermentation
Excrement dirty carry out separation of solid and liquid.
Preferably, in manure of livestock and poultry dirt transfer processing system of the present invention, the artificial wet land treating system is vertical-flow wetland
Tertiary treatment system；
Wherein, the artificial wet land treating system includes medium system, is arranged at the layer of plants on medium system top layer, and
The water distribution system and collecting system being arranged in medium system.
Preferably, in manure of livestock and poultry dirt transfer processing system of the present invention, the height of the artificial wet land treating system for 0.8~
1.5m；It is furthermore preferred that the height of the artificial wet land treating system is 1~1.2m.
Meanwhile present invention also offers a fowl and livestock pollution discharge treatment method, methods described to use poultry of the present invention
Excrement dirt transfer processing system carries out treatment for cow manure.
Preferably, manure of livestock and poultry pollution discharge treatment method of the present invention comprises the following steps：After feces of farm is collected, carry out
Fermentation process, separation of solid and liquid is then carried out by natural filtration, solid constituent collected, and liquid component is passed through into artificial swamp
Processing system is handled.
Preferably, in manure of livestock and poultry pollution discharge treatment method of the present invention, the temperature of the fermentation process is 30~40 DEG C, pending
The pH of ferment processing raw material is 6.5~7.5；It is furthermore preferred that the temperature of the fermentation process is 35~40 DEG C, the pH of fermentation raw material is treated
For 6.8~7.5.
Preferably, manure of livestock and poultry pollution discharge treatment method of the present invention, which still further comprises, to be handled through artificial wet land treating system
The step of gained liquid component is used for pouring and/or aquaculture afterwards.
Preferably, manure of livestock and poultry pollution discharge treatment method of the present invention still further comprise solid that will be collected after natural filtration into
Divide the step of preparing fertilizer.
Further, present invention also offers as the solid manure fertilizer obtained by manure of livestock and poultry pollution discharge treatment method of the present invention
Material.
Compared with prior art, beneficial effects of the present invention are：
In the present invention, collection to livestock and poultry feces being established, after transhipment fermentation process, then carrying out natural filtration, liquid enters
Enter artificial ecology wetland variation technology, solid switchs to the processing system of organic fertilizer processing；
Meanwhile during poultry treatment for cow manure, by using natural filtration system and artificial ecology wetland variation system
System, can effectively reduce the cost for the treatment of for cow manure, can not only reduce the financial burden of raiser, while can also improve ecology
Benefit, and the permanent mechanism of poultry treatment for cow manure is further advantageously formed, there is larger finger to livestock and poultry feces processing from now on
Effect is led, also the livestock culture for ecology, sustainability provides new method and thinking.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
The schematic diagram for the manure of livestock and poultry dirt transfer processing system that Fig. 1 is provided by the embodiment of the present invention；
Artificial wet land treating system section knot in the manure of livestock and poultry dirt transfer processing system that Fig. 2 is provided by the embodiment of the present invention
Structure schematic diagram.
Wherein, 1- medium systems, 2- water distribution systems, 3- collecting systems, 4- layer of plants.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical scheme will be carried out below
Clear, complete description, based on the embodiment in the present invention, those of ordinary skill in the art are not making creativeness
All other embodiment obtained by the premise of work, belong to the scope that the present invention is protected.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In view of present in current large-scale cultivation pollution problem, and existing dejecta treatment method is existing
Cost it is too high or the present situation that excrement is effectively handled can not be realized, spy of the present invention provides a kind of new manure of livestock and poultry dirt transfer correspondence
Reason system, to solve the practical problem in the presence of current feces of farm processing, and provide a kind of inexpensive, efficient fowl
Animal manure pollution discharge treatment method, a kind of new thinking is provided for large-scale cultivation and sustainable development.
Specifically, manure of livestock and poultry dirt transfer processing system of the present invention is mainly made up of following son subsystem：
Feces of farm collection system, excrement dirt fermentation process system, natural filtration system, and artificial wetland treatment system
System；
The manure of livestock and poultry dirt transfer processing system as above formed by each subsystem being sequentially connected in series, can be by plant
In excrement dirt carry out efficiently separating processing；
Specifically, the position construction of Relatively centralized can be selected according to the construction scale and layout scenarios of periphery plant
Poultry treatment for cow manure terminal (i.e. manure of livestock and poultry dirt transfer processing system and corresponding configuration subsystem), collect periphery cultivation place
Caused manure of livestock and poultry is dirty, is focused on；
The excrement dirt being collected into is concentrated in feces of farm collection system and stored, then, the manure of livestock and poultry dirt of storage is transferred to
Carry out carrying out fermentation process in anaerobic fermentation in excrement dirt fermentation process system, under anaerobic, manure of livestock and poultry dirt passes through microorganism
Metabolic activity and it is stabilized, while produce carbon dioxide and methane；
Anaerobic fermentation is handled to be carried out in the preferably anaerobic ferment devices in excrement dirt fermentation process system, at anaerobic fermentation
Reason mainly includes three phases：Liquefaction stage, production acid phase and methane phase stage；
In liquefaction stage, mainly zymophyte carries out fermentation, and the zymophyte worked mainly includes cellulose decomposition
Bacterium and protein hydrolytic bacteria；
In production acid phase, mainly acetic acid bacteria plays its fermentation；
In the methane phase stage, mainly methane bacteria plays its effect, and the tunning for producing acid phase is decomposed into methane
And carbon dioxide, while reduced carbon dioxide using hydrogen caused by acid phase is produced, obtain methane.
After anaerobic fermentation system is handled, gained tunning is transferred in natural filtration system, and passes through natural filtration
System, tunning is subjected to separation of solid and liquid；
Preferably, heretofore described natural filtration system is Powerless filtration system, and the excrement after fermentation process is dirty
It can utilize self gravitation, and by the filtration of natural filtration system, realize the natural separation of its liquid and solid constituent,
Due to and do not need external force to be promoted, thus, this also causes excrement dirt transfer processing system of the present invention for equipment and the energy
All than relatively low, the low price for being advantageously implemented excrement dirt is handled for consumption；
It is further preferred that the natural filtration system includes filter tank, and layer of sand is laid in filter tank, and pass through layer of sand
Filtration, realize the solid constituent of excrement dirt and efficiently separating for liquid component after fermentation.
It is collected respectively through the isolated solid constituent of natural filtration system and liquid separation；
Wherein, solid constituent can be further used for preparing solid manure, can also be further used for selling outside, both realize excrement
Dirty effective processing, while and can is enough effectively increased cultivation income；
And liquid component then needs further to be transferred in artificial wet land treating system, artificial wet land system processing is carried out, is made
It can reach the standard that sewage purification agriculture fills discharge；
Wherein, it is preferred that the artificial wet land treating system is vertical-flow wetland tertiary treatment system, and by take by
The mode of level consumption reaches the purpose of purified treatment；Meanwhile artificial swamp also has low small investment, energy consumption, easy maintenance, denitrogenation
Phosphor-removing effect is good, sex pheromone clearance is high, can organically be combined with water landscape construction；
Gained liquid component can vertically flow, artificial swamp in artificial wet land treating system after natural separation
The oxygen delivery capacity of system is stronger, it is thus possible to realizes the abundant nitrification for organic matter in liquid component；
Meanwhile artificial wet land treating system can also play certain filtration, so as to by after natural separation gained
Particulate matter in liquid component sufficiently separate and adsorb, and further nitrification degraded so that the liquid after processing
Body disclosure satisfy that the standard of discharge；
Further, the artificial wet land treating system includes medium system, is arranged at the layer of plants on medium system top layer,
And it is arranged at water distribution system and collecting system in medium system；
And medium system is preferably grit, rubble, or soil system, internal system is provided with water distribution pipe, and it has
Have absorption, delay, filtering, redox, precipitation, microorganism decomposition, conversion, plant masking, residue accumulated, water transpiration and
The effect of Nutrient Absorption and all kinds of animal excrements and remains；
Wherein, layer of plants is arranged at medium system upper surface layer, can be played certain by the suction-operated of root system of plant
Filter effect, meanwhile, by the nitrification for a variety of nitrobacterias being rich in layer of plants, can also realize for nature
The nitrification of organic matter and decomposition in the liquid component of gained after separation；
Preferably, the layer of plants is canna, fishscale bamboo, or the water plant layer such as Scirpus tabernaemontani；
Water distribution system is arranged in medium system, and is preferably located at the upper strata of medium system, is absorbed only so as to play crop
The effect of change；Intergrowth of species, material principle of recycling and regeneration in water distribution system, structure and orthofunction principle, in sewage is promoted
On the premise of polluter circulates benignly, the productive potentialities of resource are given full play to, prevent the recontamination of environment, obtain sewage disposal
With the optimum efficiency of recycling.
Likewise, collecting system is also disposed in medium system, and is preferably located at the lower floor of medium system, so as to realize
Collection for gained purified water after filtering；
Preferably, the height of artificial wet land treating system described in the artificial wet land treating system is 0.8~1.5m；It is more excellent
Choosing, the height of the artificial wet land treating system is 1~1.2m；
And after artificial wet land treating system is handled, gained purified water can reach the standard of nature discharge substantially, in order to
Sufficient utilization is further realized to it, purified water can be used for the pouring in farmland, or is directly used in aquaculture, preferably
Can be used as fish culture water.
And manure of livestock and poultry pollution discharge treatment method provided by the present invention, then it is to be handled using manure of livestock and poultry dirt transfer as described above
System carries out treatment for cow manure；
Specific steps refer to as follows：
(a) excrement dirt caused by cultivation place is collected by feces of farm collection system；
(b) the excrement dirt of collection is subjected to fermentation process in excrement dirt fermentation process system；
Preferably, the temperature of the fermentation process is 30~40 DEG C, and the pH for treating fermentation process raw material is 6.5~7.5；
It is furthermore preferred that the temperature of the fermentation process is 35~40 DEG C, the pH for treating fermentation raw material is 6.8~7.5；
Likewise it is preferred that, treat that the carbon-nitrogen ratio of fermentation raw material is controlled 20~30；
(c) after fermentation process, tunning is separated by filtration by natural filtration system, and respectively to filtering after
Solid constituent and liquid component are collected；
(d) natural filtration system is separated by filtration gained solid constituent and is further used for preparing solid manure；
Natural filtration system is separated by filtration gained liquid component, is further handled through artificial wet land treating system, at collection
Gained purified water after reason, and preferably use it for irrigating or in the aquaculture such as breed fish.
And by the above method, it can be reduced effectively by the dirty sufficient fermentation process of progress of produced excrement in plant
The dirty arbitrarily environmental pollution caused by discharge of excrement；Meanwhile by the way that the solid constituent after natural separation is made into solid manure, also can
Enough while twice laid is realized, increase the income of raiser；Likewise, liquid component enters one as obtained by by natural separation
Purified treatment is walked, also can realize abundant, effective utilization of resource while reducing to water pollution.
Embodiment 1
Fig. 1 is refer to, manure of livestock and poultry dirt transfer processing system provided by the present invention includes being sequentially connected in series setting：Plant
Excrement dirt collection system, excrement dirt fermentation process system, natural filtration system, and artificial wet land treating system；
Wherein, the natural filtration system is Powerless filtration system；
Meanwhile the natural filtration system includes being equipped with the filter tank of filtering layer of sand, and will be sent out by natural filtration system
The dirty progress separation of solid and liquid of excrement after ferment.
Further, it refer to Fig. 2, in manure of livestock and poultry dirt transfer processing system provided by the present invention, the artificial swamp
Processing system includes：Medium system 1, it is arranged at the layer of plants 4 on the top layer of medium system 1, and the cloth being arranged in medium system 1
Water system 2 and collecting system 3；
Preferably, the height of the artificial wet land treating system is 1m.
Embodiment 2
Fig. 1 and Fig. 2 are refer to, the dirty process method step of manure of livestock and poultry of the present invention refers to as follows：
(a) position of Relatively centralized according to the construction scale and layout scenarios of periphery plant, can be selected to build poultry
Treatment for cow manure terminal (i.e. manure of livestock and poultry dirt transfer processing system and corresponding configuration subsystem), collect periphery plant produced by
Manure of livestock and poultry it is dirty, excrement dirt caused by cultivation place is collected by feces of farm collection system；
(b) the excrement dirt of collection is subjected to fermentation process in excrement dirt fermentation process system；
The temperature of fermentation process is 35~40 DEG C, and the pH for treating fermentation raw material is 6.8~7.5；Meanwhile treat the carbon of fermentation raw material
Nitrogen is than control 20~30；
(c) tunning is separated by filtration by excrement dirt after fermented processing by natural filtration system, and right respectively
Solid constituent and liquid component after filtering are collected；
(d) natural filtration system is separated by filtration gained solid constituent and is further used for preparing solid manure；
Natural filtration system is separated by filtration gained liquid component and handled through artificial wet land treating system, gained after collection processing
Purified water, and use it for irrigating or in the aquaculture such as breed fish.
Although illustrate and describing the present invention with specific embodiment, but will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
- A 1. fowl and livestock dirt transfer processing system, it is characterised in that the manure of livestock and poultry dirt transfer processing system includes：Feces of farm collection system, excrement dirt fermentation process system, natural filtration system, and artificial wet land treating system.
- 2. manure of livestock and poultry dirt transfer processing system according to claim 1, it is characterised in that the natural filtration system is nothing Power natural filtration system；Wherein, the natural filtration system includes being equipped with the filter tank of filtering layer of sand, and by natural filtration system by after fermentation Excrement dirty carry out separation of solid and liquid.
- 3. manure of livestock and poultry dirt transfer processing system according to claim 1, it is characterised in that the artificial wet land treating system For vertical-flow wetland tertiary treatment system；Wherein, the artificial wet land treating system includes medium system, is arranged at the layer of plants on medium system top layer, and set Water distribution system and collecting system in medium system.
- 4. manure of livestock and poultry dirt transfer processing system according to claim 3, it is characterised in that the artificial wet land treating system Height be 0.8~1.5m；Preferably, the height of the artificial wet land treating system is 1~1.2m.
- A 5. fowl and livestock pollution discharge treatment method, it is characterised in that methods described usage right requires the fowl any one of 1-4 Animal manure dirt transfer processing system carries out treatment for cow manure.
- 6. manure of livestock and poultry pollution discharge treatment method according to claim 5, it is characterised in that the manure of livestock and poultry pollution discharge treatment method includes Following steps：After feces of farm is collected, fermentation process is carried out, separation of solid and liquid is then carried out by natural filtration, solid constituent is received Collection, and liquid component is handled by artificial wet land treating system.
- 7. manure of livestock and poultry pollution discharge treatment method according to claim 6, it is characterised in that the temperature of the fermentation process be 30~ 40 DEG C, the pH for treating fermentation process raw material is 6.5~7.5；Preferably, the temperature of the fermentation process is 35~40 DEG C, and the pH for treating fermentation raw material is 6.8~7.5.
- 8. manure of livestock and poultry pollution discharge treatment method according to claim 6, it is characterised in that methods described, which still further comprises, to pass through The step of gained liquid component is used for pouring and/or aquaculture after artificial wet land treating system processing.
- 9. manure of livestock and poultry pollution discharge treatment method according to claim 6, it is characterised in that methods described is still further comprised certainly The step of solid constituent so collected after filtering prepares fertilizer.
- 10. the solid manure fertilizer as described in claim 9 obtained by manure of livestock and poultry pollution discharge treatment method.
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| CN108285363A (en) * | 2018-04-09 | 2018-07-17 | 浙江泽华环保科技有限公司 | A kind of method of large size livestock and poultry feces harmless treatment and recycling |
| CN109133558A (en) * | 2018-09-10 | 2019-01-04 | 安徽昊牧农业科技有限公司 | A kind of cultivating farm sewage treatment method |
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| KR101307169B1 (en) * | 2013-03-07 | 2013-09-11 | 순천대학교 산학협력단 | A livestock manure treatment system using constructed wetlands with resource cycling system |
| CN104529113A (en) * | 2014-12-08 | 2015-04-22 | 宜昌光大陶粒制品有限责任公司 | Method and device for animal feces innocent treatment |
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| US20090277830A1 (en) * | 2008-05-02 | 2009-11-12 | Eastwood Research, Inc. | Septage treatment system and method of treating septage |
| KR101307169B1 (en) * | 2013-03-07 | 2013-09-11 | 순천대학교 산학협력단 | A livestock manure treatment system using constructed wetlands with resource cycling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108285363A (en) * | 2018-04-09 | 2018-07-17 | 浙江泽华环保科技有限公司 | A kind of method of large size livestock and poultry feces harmless treatment and recycling |
| CN109133558A (en) * | 2018-09-10 | 2019-01-04 | 安徽昊牧农业科技有限公司 | A kind of cultivating farm sewage treatment method |
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Application publication date: 20171212 |