CN110078305A - A kind of breeding waste comprehensive utilization prevention and treatment pollution of area source method - Google Patents
A kind of breeding waste comprehensive utilization prevention and treatment pollution of area source method Download PDFInfo
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- CN110078305A CN110078305A CN201910423380.2A CN201910423380A CN110078305A CN 110078305 A CN110078305 A CN 110078305A CN 201910423380 A CN201910423380 A CN 201910423380A CN 110078305 A CN110078305 A CN 110078305A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- 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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
The present invention provides a kind of methods that breeding waste comprehensively utilizes prevention and treatment pollution of area source, belong to agricultural non-point source pollution research field, method includes the following steps: 1) liquid dung is passed through fermentor, high-temperature sterilization；2) nutriment is added into the liquid dung after sterilizing, carries out liquid fermentation；3) it is filtered after fermenting, filter residue is used for aquaculture, and filtrate is discharged after artificial wetland treatment.This method passes through high-temperature sterilization, harmful microorganism and the helminth in liquid dung can be killed completely, pass through liquid fermentation, can by liquid dung high molecular weight protein and other organic matters resolve into small molecule ingredient, and microbial cells are formed, it can be used as feed and carry out aquaculture, then by adjusting pattern of farming, artificial swamp is constructed, the nutrition in liquid dung is absorbed.By multi task process, harm of the pollutant to environment was not only eliminated, but also make full use of the nutriment in pollutant, and obtained economic benefit, and had realized all-win.
Description
Technical field
The present invention relates to field of surface source pollution control technology, and in particular, to a kind of breeding waste comprehensive utilization prevention and treatment
The method of pollution of area source.
Background technique
Currently, rural culture industry be in dispersed distribution, rarer large-scale cultivation, generally not to breeding waste at
Reason, often clears up column home, the liquid dung after cleaning enters septic tank or is directly discharged into water body, is organic in water body in a manner of flushing
The important sources of object, N, P.National annual nearly 4,000,000,000 tons of livestock and poultry feces total amount of generation, livestock and poultry breeding industry emission COD
Reach 12,680,000 tons, is the major reason for causing agricultural non-point source pollution.
Currently used breeding waste processing mating generally biogas project and organic fertilizer production, but biogas is promoted at present
Unsatisfactory, the problem of organic fertilizer production not can solve liquid dung, should obtain properly in addition, breeding waste is also a kind of resource
It utilizes, therefore is badly in need of a kind of simple and effective breeding waste method of comprehensive utilization, to solve pollution caused by breeding waste
Problem simultaneously reaches utilization of resources acquisition economic benefit, realizes two-win.
Summary of the invention
The present invention provides a kind of method that breeding waste comprehensively utilizes prevention and treatment pollution of area source, the method was both eliminated
Harm of the breeding waste to environment, and the nutriment in breeding waste is made full use of, obtain economic benefit.
In order to achieve the above object, the embodiment provides a kind of breeding waste comprehensive utilization prevention and treatment face source is dirty
The method of dye, which comprises the following steps:
Liquid dung is passed through fermentor, high-temperature sterilization by step 1；
Nutriment and microbial inoculum are added into the liquid dung after sterilizing, carries out liquid fermentation for step 2；
Step 3 is filtered the liquid dung after fermentation, and filter residue is made altogether for rice crab or rice shrimp, and filtrate is through artificial swamp
It is discharged after processing, the artificial swamp plants aquatic industrial crops and cultivation aquatic animal.
Wherein, after the liquid dung is passed through fermentor, water is added to adjust, makes solid content≤30%, then carry out the high temperature
Sterilizing.
Wherein, the high-temperature sterilization temperature is 100 DEG C~140 DEG C, and the time is 30min~45min.
Wherein, the nutriment is one of corn flour, straw powder, glucose, starch or a variety of, and additive amount is
1%~10%.
Wherein, the microbial inoculum be compost EM bacteria agent, living bacteria count >=8,000,000,000 cfu/g, additive amount be 0.1%~
4%.
Wherein, the fermentation condition is 30 DEG C~50 DEG C of temperature, tank pressure 0.2 × 105Pa~0.5 × 105Pa, stirring speed
Spend 25~200r/min, 0.5~1.0m of air mass flow3Air/(m3 fermentation liquid min), pH is naturally, fermentation time 24-72h.
Wherein, the artificial swamp is that rice field is transformed, and is divided into profundal zone and phytal zone, profundal zone depth is
1.0m-2.0m, phytal zone depth are 0.5m-1.0m, and the water surface of the two is below ground 0.2m-1.0m.
Wherein, the straw powder is rice field and the straw drying and crushing acquisition that artificial swamp harvests.
Wherein, the economic aquatic plant is one of Hunan lotus seeds, water chestnut, wild rice stem, Gorgon fruit, rice or a variety of, the water
Lively object is one of fish, crab class, loach or a variety of.
Wherein, the step 1 specifically: after liquid dung is passed through fermentor, water is added to adjust, makes solid content 30%,
Sterilize 45min under the conditions of 120 DEG C of temperature；The step 2 specifically: be added 10% in the liquid dung after Xiang Suoshu high-temperature sterilization
Rice straw powder and 4% microbial inoculum, carry out liquid fermentation, the condition of the fermentation is temperature 45 C, tank pressure 0.2 × 105Pa,
Mixing speed 120r/min, air mass flow 0.8m3Air/(m3Fermentation liquid min), pH is naturally, fermentation time 48h；The step
Three specifically: filtered after fermentation, filter residue is made altogether for rice crab, and filtrate is discharged after artificial wetland treatment, and the artificial swamp is
Rice field is transformed, and profundal zone and phytal zone are divided into, and profundal zone depth is 2.0m, and phytal zone depth is 0.5m, the water surface of the two
Below ground 0.2m, the artificial swamp plantation Hunan lotus seeds, water chestnut and cultivation carp.
Above scheme of the invention has following the utility model has the advantages that liquid dung is passed through fermentor by the present invention, carries out high-temperature sterilization,
Containing the organic matter and protein and other nutriments in excrement, stalk etc. in liquid dung after sterilizing, liquid dung can be killed completely
In harmful microorganism and helminth, then nutriment and microbial inoculum are added into the liquid dung after sterilizing, carry out liquid fermentation, ferment
Process forms the nutrients such as organic matter and small molecular protein abundant without being separated by solid-liquid separation to liquid dung after fermented degradation
Matter, it is good single cell protein that another fermentation, which generates microbial cells, all can be used as the feed of aquaculture, while using liquid
The mode of fermentation, the liquid fermentation time is short, processing speed block.
Solid portion organic matter rich in and small molecular protein after fermentation etc., are very suitable to rice crab or rice shrimp is a kind of
Breeding binding pattern, main reason is that the nutrients such as organic matter and small molecular protein rich in liquid dung after fermentation
Matter can partially be eaten by crab or shrimp, and the unemployed organic matter of the excreta of shrimp crab and part is a kind of good organic fertilizer,
Soil can be improved, paddy growth is promoted；Liquid portion after fermentation is rich in a variety of nutrients, and fermentation raw material is degraded to water-soluble
N, P, K, middle microelement and small organic molecule may act as liquid fertilizer for planting aquatic industrial crops, and can make full use of water
Down space carries out aquatic animal cultivation.It is sufficiently sharp that nutriment not only is converted by organic matter therein, N, P etc. after liquid dung fermentation
With, realization non-pollution discharge, while preferable economic benefit can also be obtained, it achieves many things at one stroke.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail, herein illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
Embodiment 1
The present invention provides a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source comprising following steps:
Liquid dung is passed through fermentor, water is added to adjust by step 1, makes solid content 30%, under the conditions of 120 DEG C of temperature
High-temperature sterilization 45min；
10% rice straw powder and 4% microbial inoculum are added into the liquid dung after sterilizing, carries out liquid fermentation for step 2,
Wherein the microbial inoculum is the EM bacteria agent of the compost of Hunan Tai Gu ecological engineering Co., Ltd production, and living bacteria count is >=80 hundred million
Cfu/g, the microbial inoculum contain multiple functions microorganism, can produce protease, amylase, cellulase, lignoenzyme etc., for more
The degradation of kind raw material；
The liquid dung is filtered by step 3 after fermentation, and filter residue is made altogether for rice shrimp, and filtrate is after artificial wetland treatment
Discharge.
Specifically, the fermentation condition is temperature 50 C, tank pressure 0.2 × 105Pa, mixing speed 100r/min, air stream
Measure 1.0m3Air/(m3Fermentation liquid min), pH is naturally, fermentation time 72h.The artificial swamp is that rice field is transformed, point
For profundal zone and phytal zone, profundal zone depth is 2.0m, and phytal zone depth is 0.5m, and the water surface of the two is below ground 0.2m,
The artificial swamp plants Hunan lotus seeds, water chestnut, cultivates carp.
Embodiment 2
The present invention provides a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source comprising following steps:
Liquid dung is passed through fermentor, water is added to adjust by step 1, makes solid content 20%, in 100 DEG C of ground temperature conditions
Under, sterilize 45min；
2% glucose and 2% microbial inoculum are added into the liquid dung after sterilizing, carries out liquid fermentation, wherein institute for step 2
The EM bacteria agent for the compost that microbial inoculum is the production of Hunan Tai Gu ecological engineering Co., Ltd is stated, living bacteria count is >=80 hundred million cfu/g,
The microbial inoculum contains multiple functions microorganism, can produce protease, amylase, cellulase, lignoenzyme etc., is used for a variety of former materials
The degradation of material；
The liquid dung is filtered by step 3 after fermentation, and filter residue is made altogether for rice crab, and filtrate is after artificial wetland treatment
Discharge.
Specifically, the fermentation condition is temperature 45 C, tank pressure 0.2 × 105Pa, mixing speed 120r/min, air
Flow 0.8m3Air/(m3Fermentation liquid min), pH is naturally, fermentation time 48h.The artificial swamp is that rice field is transformed,
It is divided into profundal zone and phytal zone, profundal zone depth is 2.0m, and phytal zone depth is 0.5m, and the water surface of the two is below ground
0.2m plants Hunan lotus seeds, water chestnut, cultivates carp.
Embodiment 3
The present invention provides a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source comprising following steps:
Liquid dung is passed through fermentor, water is added to adjust by step 1, makes solid content 10%, under the conditions of 140 DEG C of ground temperature
Sterilize 30min；
2% corn flour and 2% microbial inoculum are added into the liquid dung after sterilizing, carries out liquid fermentation, wherein institute for step 2
The EM bacteria agent for the compost that microbial inoculum is the production of Hunan Tai Gu ecological engineering Co., Ltd is stated, living bacteria count is >=80 hundred million cfu/g,
The microbial inoculum contains multiple functions microorganism, can produce protease, amylase, cellulase, lignoenzyme etc., is used for a variety of former materials
The degradation of material；
Step 3 is filtered the liquid dung after fermentation, and filter residue is made altogether for rice crab, and filtrate is after artificial wetland treatment
Discharge.
Specifically, the fermentation condition is temperature 45 C, tank pressure 0.2 × 105Pa, mixing speed 120r/min, air
Flow 0.8m3Air/(m3Fermentation liquid min), pH is naturally, fermentation time 36h.The artificial swamp is that rice field is transformed,
It is divided into profundal zone and phytal zone, profundal zone depth is 2.0m, and phytal zone depth is 0.5m, and the water surface of the two is below ground
0.2m plants Hunan lotus seeds, water chestnut, cultivates carp.
In the present embodiment, the COD COD that processing water is measured using dichromate titration, using the chemical oxygen demand
The total amount that COD represents processing Organic substance in water is measured, determined by ultraviolet spectrophotometry TN content (water is cleared up using alkaline chitinase
Body total nitrogen content), as a result as follows using Ammonium Molybdate Spectrophotometric Method for Determination TP content (water body total phosphorus content):
Table 1 is embodiment 1, sewage treatment structure in embodiment 2 and embodiment 3:
It judging from the experimental results, can using the method for the breeding waste comprehensive utilization prevention and treatment pollution of area source in the present invention
Effective purifying aquaculture waste water, wherein cultivation is useless in embodiment 1 using the COD COD of dichromate titration measurement processing water
The COD of water is reduced to 13.275mg/L by original 5435.418mg/L, the chemical oxygen demand of breeding wastewater in embodiment 2
Amount is reduced to 12.557mg/L by original 5442.654mg/L, and the COD of breeding wastewater is by original in embodiment 3
5348.752mg/L is reduced to 12.557mg/L, it is known that using the breeding waste comprehensive utilization prevention and treatment pollution of area source in the present invention
Method can be effectively reduced the total amount of excrement Organic substance in water, reach the COD standard of two class water.
Determined by ultraviolet spectrophotometry TN content (water body total nitrogen content) is cleared up using alkaline chitinase, in embodiment 1
The water body nitrogen content of breeding wastewater is reduced to 0.345mg/L by original 36.154mg/L, the water body nitrogen of breeding wastewater in embodiment 2
Content is reduced to 0.256mg/L by original 32.687mg/L, and the water body nitrogen content of breeding wastewater is by original in embodiment 3
31.574mg/L is reduced to 0.319mg/L, it is known that using the method for breeding waste comprehensive utilization prevention and treatment pollution of area source in the present invention
It can be effectively reduced the content of total nitrogen in liquid dung, and wherein N is both gone as aquatic industrial crops, the nutriment of aquatic animal
Harm in addition to pollutant to environment, and make full use of the nutriment in pollutant.
Likewise, using Ammonium Molybdate Spectrophotometric Method for Determination TP content (water body total phosphorus content), it is known that using in the present invention
The method of breeding waste comprehensive utilization prevention and treatment pollution of area source can be effectively reduced total phosphorus P content in breeding wastewater, and wherein P
As aquatic industrial crops, the nutriment of aquatic animal had not only eliminated harm of the pollutant to environment, but also has made full use of pollution
Nutriment in object.
And as can be seen that the effect of embodiment 2 is best from above-mentioned table 2, wherein in breeding wastewater after treatment
COD 12.557mg/L is reduced to by original 5442.654mg/L, the water body nitrogen content of breeding wastewater is by original
32.687mg/L is reduced to 0.256mg/L, and the water body P content of breeding wastewater is reduced to 0.067mg/L by original 2.245mg/L, can
The clean-up effect for knowing cultured manure water is best, and the utilization of nutrients highest of cultured manure water.
The method of breeding waste comprehensive utilization prevention and treatment pollution of area source provided by the invention, is passed through fermentor for liquid dung, into
Row high-temperature sterilization can be complete containing the organic matter and protein and other nutriments in excrement, stalk etc. in the liquid dung after sterilizing
Harmful microorganism and the helminth in liquid dung are killed entirely, then nutriment and microbial inoculum are added into the liquid dung after sterilizing, carry out liquid
Body fermentation, fermentation process form organic matter abundant and small molecule egg without being separated by solid-liquid separation to liquid dung after fermented degradation
White equal nutriments, it is good single cell protein that another fermentation, which generates microbial cells, all can be used as the feed of aquaculture, together
The mode of Shi Caiyong liquid fermentation, the liquid fermentation time is short, processing speed block.
Solid portion organic matter rich in and small molecular protein after fermentation etc., are very suitable to rice crab or rice shrimp is a kind of
Breeding binding pattern, main reason is that the nutrients such as organic matter and small molecular protein rich in liquid dung after fermentation
Matter can partially be eaten by crab or shrimp, and the unemployed organic matter of the excreta of shrimp crab and part is a kind of good organic fertilizer,
Soil can be improved, paddy growth is promoted；
Liquid portion after fermentation is rich in a variety of nutrients, and fermentation raw material is degraded to water-soluble N, P, K, middle microelement
And small organic molecule, may act as liquid fertilizer for artificial swamp and plant aquatic industrial crops, and can make full use of hydrospace into
The cultivation of row aquatic animal.Nutriment not only is converted by organic matter therein, N, P etc. after liquid dung fermentation to make full use of, and is realized
Non-pollution discharge, while preferable economic benefit can also be obtained, it achieves many things at one stroke.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, fall within the scope of the claimed invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source, which comprises the following steps:
Liquid dung is passed through fermentor, high-temperature sterilization by step 1；
Nutriment and microbial inoculum are added into the liquid dung after sterilizing, carries out liquid fermentation for step 2；
Step 3 is filtered the liquid dung after fermentation, and filter residue is made altogether for rice crab or rice shrimp, and filtrate is through artificial wetland treatment
After discharge, the artificial swamp plants aquatic industrial crops and cultivation aquatic animal.
2. a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source according to claim 1, which is characterized in that
After the liquid dung is passed through fermentor, water is added to adjust, makes solid content≤30%, then carry out the high-temperature sterilization.
3. a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source according to claim 1, which is characterized in that
The high-temperature sterilization temperature is 100 DEG C~140 DEG C, and the time is 30min~45min.
4. a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source according to claim 1, which is characterized in that
The nutriment is one of corn flour, straw powder, glucose, starch or a variety of, and additive amount is 1%~10%.
5. a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source according to claim 1, which is characterized in that
The microbial inoculum is compost EM bacteria agent, and living bacteria count >=8,000,000,000 cfu/g, additive amount is 0.1%~4%.
6. a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source according to claim 1, which is characterized in that
The fermentation condition is 30 DEG C~50 DEG C of temperature, tank pressure 0.2 × 105Pa~0.5 × 105Pa, 25~200r/ of mixing speed
Min, 0.5~1.0m of air mass flow3Air/(m3Fermentation liquid min), pH is naturally, fermentation time 24-72h.
7. a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source according to claim 1, which is characterized in that
The artificial swamp is that rice field is transformed, and is divided into profundal zone and phytal zone, and profundal zone depth is 1.0m-2.0m, phytal zone
Depth is 0.5m-1.0m, and the water surface of the two is below ground 0.2m-1.0m.
8. a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source according to claim 4, which is characterized in that
The straw powder is rice field and the straw drying and crushing acquisition that artificial swamp harvests.
9. a kind of method of breeding waste comprehensive utilization prevention and treatment pollution of area source according to claim 7, which is characterized in that
The economic aquatic plant be one of Hunan lotus seeds, water chestnut, wild rice stem, Gorgon fruit, rice or a variety of, the aquatic animal be fish,
One of crab class, loach are a variety of.
10. the method for breeding waste comprehensive utilization prevention and treatment pollution of area source according to claim 1, which is characterized in that institute
State step 1 specifically: after liquid dung is passed through fermentor, water is added to adjust, make solid content 30%, in 120 DEG C of temperature condition
Lower sterilizing 45min；The step 2 specifically: in the liquid dung after Xiang Suoshu high-temperature sterilization be added 10% rice straw powder and
4% microbial inoculum, carries out liquid fermentation, and the condition of the fermentation is temperature 45 C, tank pressure 0.2 × 105Pa, mixing speed 120r/
Min, air mass flow 0.8m3Air/(m3Fermentation liquid min), pH is naturally, fermentation time 48h；The step 3 specifically: fermentation
After filter, filter residue is made altogether for rice crab, and filtrate is discharged after artificial wetland treatment, and the artificial swamp is that rice field is transformed,
It is divided into profundal zone and phytal zone, profundal zone depth is 2.0m, and phytal zone depth is 0.5m, and the water surface of the two is below ground
0.2m, the artificial swamp plantation Hunan lotus seeds, water chestnut and cultivation carp.
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| CN111194826A (en) * | 2020-01-14 | 2020-05-26 | 大连海洋大学 | Method for preparing bait from aquaculture solid waste |
| CN117512149A (en) * | 2023-12-01 | 2024-02-06 | 北京师范大学 | Microbial gene fingerprint spectrum for identifying pollution of shrimp and crab culture sources and application thereof |
| CN117512149B (en) * | 2023-12-01 | 2024-07-23 | 北京师范大学 | Microbial gene fingerprint spectrum for identifying pollution of shrimp and crab culture sources and application thereof |
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