CN105967771A - Sludge decomposition pretreatment method - Google Patents
Sludge decomposition pretreatment method Download PDFInfo
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- CN105967771A CN105967771A CN201610279866.XA CN201610279866A CN105967771A CN 105967771 A CN105967771 A CN 105967771A CN 201610279866 A CN201610279866 A CN 201610279866A CN 105967771 A CN105967771 A CN 105967771A
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- mud
- thoroughly decomposed
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- molding
- sludge
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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
- C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- Biotechnology (AREA)
- Water Supply & Treatment (AREA)
- Botany (AREA)
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a sludge decomposition pretreatment method, and belongs to the technical field of sludge treatment. The method can increase the air permeability of a system and shorten the decomposition period in the sludge treatment process. The sludge decomposition pretreatment method comprises the following steps: mixing sludge with organic material dry powder containing facultative anaerobes to obtain a sludge mixture with the water content of 50-60%; carrying out molding treatment on the sludge mixture, and coating the surface of the molded sludge mixture with organic material dry powder containing aerobic decomposing bacteria; and separating the molded sludge mixture from superfluous organic material dry powder, and carrying out compost decomposition. The method can be used in the sludge decomposition pretreatment stage.
Description
Technical field
The present invention relates to technical field of sludge treatment, particularly relate to a kind of mud and become thoroughly decomposed pre-treating method.
Background technology
Mud is the product after sewage disposal, is a kind of by organic relic, microorganism, inorganic particulate
The complicated heterogeneous body of the composition such as grain, colloid.Along with the high speed development of sewage treatment industry, dirty
The generation amount of mud is increasing, and the handling problems of mud is but shelved for a long time so that the safety of mud
Handling problems is the most urgent.Compared to muds such as landfill, burnings, compost treatment can be real
The recycling of existing mud, is the most promising method for sludge treatment.
At present, compost treatment many employings aerobic compost, concrete, by mud be added with compound
Compost maturity is begun to after the low-moisture organic materials dry powder blend of bacterium of becoming thoroughly decomposed.But in practice
In, inventor finds, due to composting system poor air permeability in the early stage, only anaerobism and amphimicrobian
Microorganism is started working, but the intensification of these microorganisms is low, only 30～40 DEG C, and moisture evaporates, dissipates
Lose slowly so that aerobic microbiological is difficult to work because of anoxia, can only lean on ceaselessly turning, dry in the sun,
Air-dry and reduce moisture, thus create working environment for aerobic microbiological, but so can make undoubtedly
Time of becoming thoroughly decomposed is long, and efficiency is slow, and cost is high.
Therefore, breathability the shortening that how during mud becomes thoroughly decomposed, can increase system are become thoroughly decomposed
In the cycle, will be the important topics studied of those skilled in the art.
Summary of the invention
It is an object of the invention to provide a kind of mud to become thoroughly decomposed pre-treating method, it is possible to become thoroughly decomposed at mud
During, increase the breathability of system and shorten decomposed period.
The invention provides a kind of mud to become thoroughly decomposed pre-treating method, including:
Mud and the organic materials dry powder being added with facultative anaerobe are carried out mixing in proportion, obtains moisture content
Mud mixture material for 50%-60%；
It is shaped described mud mixture material processing, and coating is added to molding mud mixture material surface
There is the organic materials dry powder of aerobic bacterium of becoming thoroughly decomposed；
Described molding mud mixture material is separated with unnecessary organic materials dry powder, then carries out compost
Become thoroughly decomposed.
Optionally, described facultative anaerobe is yeast, and the addition of described facultative anaerobe is every cube of dirt
Mud 0.1-0.25Kg.
Optionally, described aerobic bacterium of becoming thoroughly decomposed is selected from bacillus subtilis, sporotrichum thermophile and trichoderma extremely
Few one, the addition of described aerobic bacterium of becoming thoroughly decomposed is every cube of mud 0.25-1Kg.
Preferably, before compost maturity terminates, when compost temperature is reduced to 45 DEG C, add in compost
Oxygen actinomycetes.
Optionally, described aerobic actinomycetes are streptomyces microflavus, and described aerobic actinomycetic addition is for often to stand
Side mud 1-2Kg.
Concrete, utilize the classifying screen that aperture is 4-6mm to be done with unnecessary organic materials by described molding mud
Powder separates.
Optionally, described molding mud is strip molding mud or block molding mud.
Preferably, a diameter of 0.4-0.8cm, length≤7cm of described strip molding mud；Described bulk
Width≤the 1.5cm of molding mud, length≤5cm.
Optionally, described organic materials dry powder selected from bran powder, peanut hull meal, mushroom residue, brown coal coal dust,
At least one in willow sawdust, powder of straw and dry powder returns powder.
The invention provides a kind of mud to become thoroughly decomposed pre-treating method, compared with prior art, the present invention uses
Two-step method performs mud and becomes thoroughly decomposed pre-treatment, concrete, in the first step by mud, organic materials dry powder and
Facultative anaerobe carries out mixing, utilizes facultative anaerobe to promote the internal fermentation of mud；By mud in second step
Material is shaped processing, and strengthens the breathability of system by increasing the space between sludge material, at this
In step, the aerobic bacterium initial stage of becoming thoroughly decomposed being coated on molding sludge material surface starts working in molding Sludge Surface,
Work with the facultative anaerobe within molding materials subsequently simultaneously, decomposing organic matter, protein etc., release heat
Amount, fast lifting compost temperature, along with molding mud internal moisture runs off, enter the space provided for air
Increase, enter molding mud internal work via space in good time, thus accelerate to become thoroughly decomposed.The method is simple to operate,
Can effectively shorten decomposed period, improve efficiency of becoming thoroughly decomposed, cost-effective.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that
Described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of protection of the invention.
Embodiments provide a kind of mud to become thoroughly decomposed pre-treating method, including:
S1: mud and the organic materials dry powder being added with facultative anaerobe are carried out mixing in proportion, is contained
Water rate is the mud mixture material of 50%-60%.
In this step, first mud, facultative anaerobe, organic materials dry powder are mixed, to reduce dirt
The water content of mud, is beneficial to next step forming processes.Here it should be noted that, mixing ratio is according to sludge water content
Determine with the moisture of dry material.After mixing, the water content of mud should be moderate, i.e. 50%-60%, and should mistake
High or too low, too high, do not play the purpose reducing sludge moisture content, poor air permeability, be unfavorable for becoming thoroughly decomposed；
Too low, can affect the fermentation activity of facultative anaerobe, and along with moisture evaporates, and then can affect follow-up good
Oxygen becomes thoroughly decomposed the entrance of bacterium, growth, expanding propagation, reduces activity, makes material become thoroughly decomposed the most thorough.It is understood that
Above-mentioned scope is relatively mild and rational water content ranges, and those skilled in the art can root within the above range
Be adjusted according to practical condition, such as, water content can be 50%, 51%, 52%, 53%, 54%, 55%,
56%, 57%, 58%, 59%, 60% etc..
S2: be shaped described mud mixture material processing, and be coated with to molding mud mixture material surface
It is added with the organic materials dry powder of aerobic bacterium of becoming thoroughly decomposed.
In this step, first it is shaped mud mixture material processing, its object is to by increasing dirt
Space between mud material strengthens breathability, thus the most aerobic bacterium of becoming thoroughly decomposed just can work at once.With
Facultative anaerobe is inside and outside echoes, and discharges heat as early as possible, makes stockpile heat up, and transpiring moisture, for aerobic bacterium of becoming thoroughly decomposed
Enter sludge material internal invention condition.It is understood that mud mixture material to be shaped process
Shape need to meet the condition in the space beneficially increased between sludge material.
S3: described molding mud mixture material is separated with unnecessary organic materials dry powder, then carries out
Compost maturity.
In this step, molding Sludge Surface is being coated with the organic materials dry powder being added with aerobic bacterium of becoming thoroughly decomposed
After, the most also can be furnished with the most unnecessary organic materials, in order to avoid these unnecessary organic materials are to
The molding mud of coating organic materials dry powder produces impact during compost maturity, is isolated here.
The mode of compost fermentation can use fermentation vat trough type fermentation at present, it is possible to uses trapezoidal dykes and dams type compost
Fermentation.If but use fermentation vat trough type fermentation, and follow-up, need in corresponding measure, such as fermentation vat
Forced-ventilation, the mandatory ventilation of dam-type stockpile, or turning continually, dry in the sun precipitation divides, these
Measure can improve cost to some extent, even extends and becomes thoroughly decomposed the time.If that takes trapezoidal dam-type beats heap
Becoming thoroughly decomposed mode, early stage needs frequent turning, dry in the sun precipitation to divide, until the breathability in material is improved,
Aerobic bacterium of becoming thoroughly decomposed just is started working.This process, needs the time of more than 10 days when weather is favourable.Rain
When cloudy, temperature is low, then need the longer time.Time of becoming thoroughly decomposed is long, takies limited place, and this is also
A kind of cost.
Therefore, in order to overcome above-mentioned technical problem, the present invention uses two-step method to become thoroughly decomposed pre-treatment performing mud,
Use two-step method to perform mud to become thoroughly decomposed pre-treatment, concrete, first it is mixed into facultative anaerobe inside material,
Promote the internal fermentation of mud, increase pore space.Secondly, by mud mixture material being shaped process,
Strengthening improves the overall air permeability of compost stockpile, and is coated with the Organic substance adding aerobic bacterium of becoming thoroughly decomposed on its surface
Material dry powder, enables aerobic bacterium of becoming thoroughly decomposed to obtain air, immediately enters duty.Inside and outside different function bacterium
Working, quick heating, moisture evaporation is the fastest, accelerates to become thoroughly decomposed simultaneously.The method is simple to operate, it is possible to effectively contract
Short decomposed period, shortens overall decomposed period, reduces cost.
In an alternate embodiment of the present invention, described facultative anaerobe is yeast.In the present embodiment, first
Make to ferment inside mud mixture material first with facultative anaerobe, form a large amount of bubble space, so may be used
Entrance for follow-up aerobic bacterium of becoming thoroughly decomposed provides space, breathability.It is understood that yeast is conventional
Facultative anaerobe, but the anaerobe in the present embodiment is not limited thereto, as long as in making mud mixture material
Fermenting in portion, forms a large amount of bubble space.In an alternate embodiment of the present invention, facultative anaerobe
Addition be every cube of mud 0.1-0.25Kg.In the present embodiment, in order to make pending mud
Preferably fermented, in every cube of pending mud, added 0.1-0.25Kg facultative anaerobe.Permissible
Being understood by, the scope of the above-mentioned amphimicrobian bacterial content merely providing addition, those skilled in the art can
Be adjusted according to practical situation, such as, 0.15 can be added, 0.16,0.17,0.18,0.19,0.2,
0.21,0.22,0.23,0.24,0.25Kg etc..
In an alternate embodiment of the present invention, aerobic become thoroughly decomposed bacterium selected from bacillus subtilis, sporotrichum thermophile and
At least one in trichoderma.In the present embodiment, first aerobic bacterium of becoming thoroughly decomposed is coated on the surface of molding mud,
Its initial stage works in molding Sludge Surface, quick heating, along with molding sludge water content runs off, has improved breathability,
Enter molding mud internal work via space in good time, thus accelerate to become thoroughly decomposed.It is understood that this enforcement
The aerobic bacterium of becoming thoroughly decomposed used in example is preferably bacillus subtilis, but the aerobic bacteria in the present embodiment does not limit to
In this, as long as molding mud can be accelerated from outside quick composting.In an alternate embodiment of the present invention,
The addition of aerobic bacterium of becoming thoroughly decomposed is every cube of mud 0.25-1Kg.In the present embodiment, in order to accelerate
Becoming thoroughly decomposed in molding mud inside and outside, adds the aerobic bacterium of becoming thoroughly decomposed of 0.25-1Kg in every cube of molding mud.Permissible
Being understood by, the scope of the above-mentioned aerobic bacterial content that becomes thoroughly decomposed merely providing addition, those skilled in the art can
Be adjusted according to practical situation, such as, 0.3 can be added, 0.4,0.5,0.6,0.7,0.8,0.9Kg
Deng.
In one embodiment of the present invention, before compost maturity terminates, when compost temperature is reduced to 45 DEG C,
The critical stage that needed for compost material entrance plant, nutrient is formed, now, adds aerobic actinomycetes in compost.
In the present embodiment, when compost maturity thermophase from high temperature enters (when compost temperature is less than 45 DEG C),
Along with turning adds aerobic actinomycetes in compost.Now adding aerobic actinomycetes, major function is to promote
Enter deep decomposition, become thoroughly decomposed, form nutrient needed for plant more preferable, more, strengthen fertility.Wait to be down to 40 DEG C,
During moisture about 40%, aerobic actinomycetes are started working, and continue the organic substance in depth degradation compost, ore deposit
Material, and secrete the active substance of the promotion plant growths such as gibberellins, the basic element of cell division, auxin, thus
The sludge composting after becoming thoroughly decomposed is enable to reach the optimum feed stock standard of organic fertilizer, bio-organic fertilizer.
In an alternate embodiment of the present invention, described aerobic actinomycetes are streptomyces microflavus.In the present embodiment,
What aerobic actinomycetes were selected is streptomyces microflavus, and certainly, the present embodiment is to aerobic actinomycetic concrete kind also
The most specifically limit, as long as the effect played in this application can be played.In the optional enforcement of the present invention one
In example, aerobic actinomycetic addition is every cube of mud 1-2Kg.In the present embodiment, at the present embodiment
In, in order to the mud after enabling compost maturity acts effectively as organic fertilizer, add in every cube of molding mud
Enter the aerobic actinomycetes of 1-2Kg.It is understood that the above-mentioned aerobic actinomycetes content merely providing addition
Scope, those skilled in the art can be adjusted according to practical situation, such as, 1.1 can be added, 1.2,
1.3,1.4,1.5,1.6,1.7,1.8,1.9Kg etc..
In the present invention one specific embodiment, utilize classifying screen that aperture is 4-6mm by described molding mud with
Unnecessary organic materials dry powder separates.In the present embodiment, in order to molding mud is organic with unnecessary
Material dry powder separates, and can carry out physics screening, and such as using aperture is the classifying screen of 4-6mm, thus
Guarantee that unnecessary organic materials dry powder will not be on the ventilative generation impact of becoming thoroughly decomposed of molding mud.
In an alternate embodiment of the present invention, described molding mud is strip molding mud or block molding dirt
Mud.In the present embodiment, in order to increase the space between molding mud, different shapes can be made into,
Such as strip, bulk, but it is understood that, the shape of molding sludge material is not limited thereto, and also may be used
To be graininess etc..In a preferred embodiment, described strip molding sludge material is a diameter of
0.4-0.8cm, length≤7cm；Width≤the 1.5cm, length≤5cm of described block molding mud.By bar
Shape, block molding mud are arranged to above-mentioned size, are present to ensure that between molding mud have enough spaces,
Improve the breathability of the stockpile that becomes thoroughly decomposed.
In an alternate embodiment of the present invention, described organic materials dry powder is selected from bran powder, peanut hull meal, mushroom
At least one in mushroom slag, brown coal coal dust, willow sawdust, powder of straw and dry powder returns.Wherein, dry powder
Returns refers to the powder that compost maturity is crossed.In the present embodiment, organic materials dry powder is selected from
Dry powder in the range of stating, but it is understood that, organic materials dry powder is not limited thereto, it is also possible to be this
Skilled person can carry out other material dry powder substituted.
Become thoroughly decomposed pre-treating method to become apparent from introducing the embodiment of the present invention in detail the mud provided,
Illustrate below with reference to specific embodiment.
Embodiment 1
Add in mud and be mixed with saccharomycetic organic materials dry powder and carry out mixing, wherein by every cube of mud
The ratio using 0.1kg adds the organic materials dry powder of yeast and the amount of appraising and deciding, and obtaining moisture content is 50%
Mud mixture material；Subsequently, described mud mixture material is made bulk, and to molding sludge material surface
Coating is added with the organic materials dry powder of aerobic bacterium of becoming thoroughly decomposed, wherein by using 0.25kg's in every cube of mud
Ratio adds the aerobic bacterium organic materials dry powder with the amount of appraising and deciding that becomes thoroughly decomposed；Treat sludge ripe entrance coda, stockpile temperature
When degree is less than 45 DEG C, add aerobic actinomycetes in the ratio of every cube of compost 1kg now, with turning machine
Tool is mixed into compost, about 35 DEG C, moisture about 40% time start working, continue in depth degradation compost
Organic substance, mineral, and secrete the work of the promotion plant growths such as gibberellins, the basic element of cell division, auxin
Property material, is converted into the raw material of organic fertilizer with the compost after becoming thoroughly decomposed.
Embodiment 2
Add in mud and be mixed with saccharomycetic organic materials dry powder and carry out mixing, wherein by every cube of mud
The ratio using 0.15kg adds the organic materials dry powder of yeast and the amount of appraising and deciding, and obtaining moisture content is 60%
Mud mixture material；Subsequently, described mud mixture material is made bulk, and is coated with to molding Sludge Surface
Cloth is added with the organic materials dry powder of aerobic bacterium of becoming thoroughly decomposed, wherein in the ratio using 0.5kg in every cube of mud
Add the aerobic bacterium organic materials dry powder with the amount of appraising and deciding that becomes thoroughly decomposed；Treat sludge ripe entrance temperature-fall period, stockpile temperature
When degree is less than 45 DEG C, add aerobic actinomycetes in the ratio of every cube of compost 1.5kg now, with turning
Machinery is mixed into compost, about 35 DEG C, moisture about 40% time start working, continue in depth degradation compost
Organic substance, mineral, and secrete gibberellins, the basic element of cell division, auxin etc. and promote plant growth
Active substance, is converted into the raw material of organic fertilizer with the compost after becoming thoroughly decomposed.
Embodiment 3
Add in mud and be mixed with saccharomycetic organic materials dry powder and carry out mixing, wherein by every cube of mud
The ratio using 0.25kg adds the organic materials dry powder of yeast and the amount of appraising and deciding, and obtaining moisture content is 55%
Mud mixture material；Subsequently, described mud mixture material is made bulk, and is coated with to molding Sludge Surface
Cloth is added with the organic materials dry powder of aerobic bacterium of becoming thoroughly decomposed, wherein in using the ratio of 1kg to add in every cube of mud
Enter the aerobic bacterium organic materials dry powder with the amount of appraising and deciding that becomes thoroughly decomposed；Treating sludge ripe entrance coda, stockpile temperature is less than
When 45 DEG C, add aerobic actinomycetes in the ratio of every cube of compost 2kg now, be mixed into heap with turning machinery
Fertilizer, about 35 DEG C, moisture about 40% time start working, continue degraded compost in organic substance, and
Secretion gibberellins, the basic element of cell division, auxin etc. promote the active substance of plant growth, after becoming thoroughly decomposed
Compost is converted into the raw material of organic fertilizer.
The sludge composting that thered is provided of the embodiment of the present invention pre-treating method that becomes thoroughly decomposed is used to process mud, it is considered to temperature
Just, the natural conditions such as air humidity, evaporation rate, decomposed period is generally 30-50 days.By current
Common compost mode, under same environmental condition, needs 40-70 days.
Claims (9)
1. a mud becomes thoroughly decomposed pre-treating method, it is characterised in that including:
Mud and the organic materials dry powder being added with facultative anaerobe are carried out mixing in proportion, obtains moisture content
Mud mixture material for 50%-60%；
It is shaped described mud mixture material processing, and coating is added to molding mud mixture material surface
There is the organic materials dry powder of aerobic bacterium of becoming thoroughly decomposed；
Described molding mud mixture material is separated with unnecessary organic materials dry powder, then carries out compost
Become thoroughly decomposed.
Mud the most according to claim 1 becomes thoroughly decomposed pre-treating method, it is characterised in that described facultative
Anaerobe is yeast, and the addition of described facultative anaerobe is every cube of mud 0.1-0.25Kg.
Mud the most according to claim 1 becomes thoroughly decomposed pre-treating method, it is characterised in that described aerobic
At least one in bacillus subtilis, sporotrichum thermophile and trichoderma of bacterium of becoming thoroughly decomposed, described aerobic becomes thoroughly decomposed
The addition of bacterium is every cube of mud 0.25-1Kg.
Mud the most according to claim 1 becomes thoroughly decomposed pre-treating method, it is characterised in that rotten at compost
Before ripe end, when compost temperature is reduced to 45 DEG C, in compost, it is mixed into aerobic actinomycetes.
Mud the most according to claim 4 becomes thoroughly decomposed pre-treating method, it is characterised in that described aerobic
Actinomycetes are streptomyces microflavus, and described aerobic actinomycetic addition is every cube of mud 1-2Kg.
Mud the most according to claim 1 becomes thoroughly decomposed pre-treating method, it is characterised in that utilize aperture
Described molding mud is separated by the classifying screen for 4-6mm with unnecessary organic materials dry powder.
Sludge composting the most according to claim 1 becomes thoroughly decomposed pre-treating method, it is characterised in that described
Molding mud is strip molding mud or block molding mud.
Mud the most according to claim 7 becomes thoroughly decomposed pre-treating method, it is characterised in that described strip
A diameter of 0.4-0.8cm of molding mud compound, length≤7cm；The width of described block molding mud
≤ 1.5cm, length≤5cm.
Mud the most according to claim 1 becomes thoroughly decomposed pre-treating method, it is characterised in that described organic
Material dry powder is selected from bran powder, peanut hull meal, mushroom residue, brown coal coal dust, willow sawdust, powder of straw and does
At least one in powder returns powder.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110698272A (en) * | 2019-10-18 | 2020-01-17 | 惠州市乐夫农业科技有限公司 | Production method of high-efficiency biological fertilizer |
| CN113493353A (en) * | 2020-03-20 | 2021-10-12 | 云南绿益环保有限公司 | Sludge fermentation method |
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| CN110698272A (en) * | 2019-10-18 | 2020-01-17 | 惠州市乐夫农业科技有限公司 | Production method of high-efficiency biological fertilizer |
| CN113493353A (en) * | 2020-03-20 | 2021-10-12 | 云南绿益环保有限公司 | Sludge fermentation method |
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Application publication date: 20160928 |