CN106518190A - Composting method using rectorite as accessory material - Google Patents
Composting method using rectorite as accessory material Download PDFInfo
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- CN106518190A CN106518190A CN201611032430.7A CN201611032430A CN106518190A CN 106518190 A CN106518190 A CN 106518190A CN 201611032430 A CN201611032430 A CN 201611032430A CN 106518190 A CN106518190 A CN 106518190A
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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
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/80—Separation, elimination or disposal of harmful substances during the treatment
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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
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
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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
- 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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- Health & Medical Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Molecular Biology (AREA)
- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
- Treatment Of Sludge (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a composting method using rectorite as an accessory material. The composting method comprises the following steps: adding 10 to 20% of wood chip and straw and 5 to 15% of sintered rectorite in the process of composting and pretreatment of sludge and allowing the water content of the initial materials mixed under stirring to be 60%; controlling turning frequency and aeration rate of composting; and after completion of composting, carrying out screening to form a composting product-organic matrix with uniform particle sizes and separating rectorite from soil for cyclic usage. The sintered rectorite applied to composting has the advantages of adsorptivity, ion exchange performance, air permeability, low loss and repeated usability; the composting product obtained in the invention is high in decrement rate; the utilization efficiency of composting cabins is high; the composting product is loose and is easy to separate; a composting period is shortened by 1/4; operation cost is reduced; economic benefits are increased; and the method is extensively applicable to aerobic composting of a variety of sludges.
Description
Technical field
The invention belongs to sludge aerobic compost processing technology field, more particularly to a kind of rectorite makees the compost of adjuvant
Method.
Background technology
As Urbanization in China is accelerated, the treating capacity of municipal sewage is also continuously increased.Sludge is the companion of sewage disposal
Biology, generally accounts for the 0.5--1% of sewage load, due to its complicated component, both containing substantial amounts of Organic substance, contains cause of disease again
Microorganism, heavy metal etc., are processed and disposal is difficult, and stack risk big.Thus how safe, economically and reasonably disposal and utilization
Sludge of sewage treatment plant is always the research topic that countries in the world today is extremely paid close attention to.At present, disposing municipal sludge has burning, defends
The method such as raw landfill and Land_use change, wherein Land_use change have become an important treatment approach.But it is necessary before Land_use change
Through stabilisation and harmless treatment.The stabilisation of sludge and harmless treatment mainly have：Aerobic sigestion, anaerobic digestion, compost
Change, double digestion, heat drying and alkaline stabilisation etc..Wherein, composted --- it is the most frequently used that i.e. aerobic composting is processed.
Compost is the process fermented using sludge microbe, and a certain amount of bulking agent and conditioner are added in sludge
(such as straw, Caulis et Folium Oryzae, wood flour or house refuse etc.) microbiologic population carries out oxidation Decomposition to gas chromatography in wet condition
And humic-like substance is converted into, research shows, loose through the sludge quality of compost, cation exchange capacity (CEC) is dramatically increased, capacity subtracts
Little, the nutritional labeling that can be utilized by plant increases, and pathogen and parasitic ovum almost all are killed.Product of the sludge Jing after compost
Become that a kind of comparison is clean and the product of stable performance.
In for the method for current China's municipal sludge process, fixed bin bar buttress formula compost is the work being most widely used
Skill.It has investment in fixed assets few, and equipment operating cost is low, it is easy to the advantages of supporting, although it is long to there is fermentation period, takes up an area
The shortcomings of area is big, but as municipal sewage plant typically build countryside in, problems of land utilization is not projected, therefore this compost side
Method also is continuing to play its advantage.In fixed bin bar buttress formula composting process, need with conducts such as wood flour, straw, rice husks
Conditioner, it can play a part of water suction, fluffy, thin oxygen.But because itself occurs decomposition, slump during compost, it is impossible to
It is enough to play support from start to finish, dredge oxygen effect.Therefore only can only play of short duration with the conditioner of the compositions such as wood flour, straw, rice husk
Effect, gradually lose opsonic action in the middle and late stage of compost.
Rectorite, is a kind of clay of laminar silicate mineral with special construction, more rare.It is a kind of dioctahedron
The 1 of Muscovitum and dioctahedron smectite composition:1 regularly interstratified mineral.Rectorite is the special aluminium silicate mineral of crystal structure,
With high-temperature stability, up to 1650 DEG C of refractoriness, and holding structure can stablize under 500 DEG C of states.Its thing the most special
Rationality can be adsorptivity and cation exchange, the aquation cation in its structure between montmorillonite layer, can be by a large amount of other nothings
Machine, organic cation are exchanged, and such as sodium, aluminum, silicon, chromium, copper, zinc, lead and quaternary amine etc. be single or compound ion, can adsorb various nothings
Machine ion, organic molecule and gas molecule, and this absorption and exchange are reversible.Natural accumulation supporting stone is sintered, becomes one
Plant spherical or block concrete dynamic modulus rock-steady structure thing.Through experimental verification, this sintering rectorite have breathability, adsorptivity and
The functions such as ion exchangeable.
In sum, the ventilative and loose poor performance of sludge composting in current sludge composting process, it is impossible to reduce a huge sum of money
Category content, supplementary product consumption are high, high cost.
The content of the invention
It is an object of the invention to provide a kind of rectorite makees the compost method of adjuvant, it is intended to solve current sludge
The ventilative and loose poor performance of material in fertile sweat, it is impossible to reduce content of beary metal, supplementary product consumption is high, and high cost is asked
Topic.
The present invention is achieved in that a kind of rectorite makees the compost method of adjuvant, including：
During sludge composting pretreatment spice, the wood flour class conditioner and sludge of sludge weight 10%～20% are added
The sintering rectorite of weight 5%～15%, makes the starting material moisture content after stirring 60%～70%；
The turn pile frequency and aeration rate of control compost；
After compost terminates, sieved, formed evengranular organic substrate, sintering rectorite is separated from grog, entered
Row is recycled.
Further, this specifically includes following steps with the compost method that rectorite makees adjuvant：
Step one, to the sludge sample analysis moisture content shown up, determines sludge, wood flour class conditioner, burns according to moisture content
The ratio of rectorite and backflow grog is tied, adding proportion is：Moisture content is sludge weight for the wood flour class conditioner of 8-12%
10%～20%, sintering rectorite for sludge weight 5%～15%, backflow grog is the 20%～25% of sludge weight, makes
Compound initial aqueous rate is up to 60%～70%；The happiness temperature Thermophilic Bacteria of the 0.1-0.15 ‰ of sludge weight is added to make during mixing simultaneously
To induce microbial inoculum；
Step 2, by sludge and in the load weighted wood flour class conditioner of ratio described in step one, sintering rectorite, backflow
In grog and microbial inoculum input mixer, after being uniformly mixed, proceed in fermentation tank, it is underground logical by being laid on fermentation tank
Wind groove, with interval of the frequency of 2 hours of ventilation in 8 hours to heap body aeration.Throwing is turned over turner orientation during compost heats up, is turned over
It is every 24 hours～36 hours turning and throwing onces to throw frequency.
Step 3, when fermentation calefaction is to 55 DEG C -60 DEG C, continue by the stirring frequency that sets in step 2 run 10 days～
12 days terminate；Whole composting cycle is 15 days～18 days, and 55 DEG C maintain 5 days～6 days, makes sludge in loose uniform granule；Heap
Coliform value and roundworm egg inactivation ratio when fertilizer is completed in detection sludge；
Step 4, is sieved, and sintering rectorite is separated from grog, use is circulated in returning to step one.
Further, the sludge sample analysis moisture content to showing up is 75%～80%；Mud sample kind total organic matter 400/
KgDM～600g/kgDM, water solublity total nitrogen 3.0/kgDM～5.0g/kgDM, coliform value >=24,000MPN/kgDM.
Further, the coliform value in the sludge detected when compost is completed is reduced to 30MPN/lOOgDM, and roundworm egg goes out
Motility rate l00%.
Further, the sintering rectorite particle diameter is 3.1cm～3.5cm；The wood flour class conditioner includes wood flour, straw
Stalk, rice husk.
The compost method for making adjuvant with rectorite that the present invention is provided, replaces the part of sludge composting to adjust with sintering rectorite
Reason agent --- wood flour and straw, serve as adjuvant during sludge composting, increase the gap between sludge, increase air exchange rate and exposure
Tolerance, plays thin oxygen agent effect；
To moisture content 75-80%, total organic matter 400-600g/kgDM, water solublity total nitrogen 3.0-5.0g/kgDM, coliform
The sludge of group's value 24000MPN/100gDM, the adjuvant of addition are respectively：Moisture content is that 10% wood flour and straw mixture are dirt
The 10-20% of mud weight, sinters 5-15% of the rectorite for sludge weight.Initial aqueous rate control before mud mixture compost exists
60-65%.
Sintering rectorite has ion exchangeable, can during compost and turning with sludge in chromium, lead, copper, zinc etc.
Metal ion is swapped, so as to reduce the content of beary metal of composting production.
Compost completes thing and is sieved, and the composting production for sifting out is into evengranular organic substrate, the sintering stayed in sieve
Rectorite returns dispensing link and recycles.
Due to the present invention using sintering rectorite as compost conditioner, be using the porous for sintering rectorite and adsorb from
The characteristic that son is exchanged, its Main Function is mainly by following two aspects：One permeability and laxity for being to increase compost, improves empty
Air-flow leads to, and makes composting fermentation process uniformity；Two is to adsorb the heavy metal ion in compost, is reduced in sludge to greatest extent
Content of beary metal.
It is relatively low as rectorite loss is sintered during use, it is easy to separate, reuse capable of circulation, the damage of each compost
Consumption rate is less than 5%.The cost for using wood flour is converted into part is lost and is worth, only 20% or so.Therefore the operation of the present invention into
This is cheap, and economic benefit is obvious.
As the present invention with the addition of Novel conditioning agent, compared with only with the tradition conditioner technique such as wood flour/wood chip, compost
Early warming speed is fast, and when compost is finished, the dehydration of heap body and cooling are rapider.Therefore, 5- can be shortened the time required to compost maturity
7 days, shorten about 1/4 than the composting cycle of domestic and international similar industrialization composting technology, therefore improve composting efficiency, while also more
It is suitable for automatically controlling for composting process.
Description of the drawings
Fig. 1 is the compost method flow chart that rectorite provided in an embodiment of the present invention makees adjuvant.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is not used to only to explain the present invention
Limit the present invention.
In the embodiment of the present invention, aerobic fermentation process of the compost for sludge；Conditioner：Refer to improve the compost effect of sludge
And playing a part of of adding absorb water, adjuvant that is fluffy, dredging oxygen, such as wood flour, straw, rice husk etc. sinter rectorite in the present invention
Fall within conditioner.Organic substrate is the sludge composting product that harmless treatment has been carried out through compost.kgDM：DM represents dry
Matter.
Below in conjunction with the accompanying drawings the application principle of the present invention is explained in detail.
As shown in figure 1, the compost method that rectorite provided in an embodiment of the present invention makees adjuvant specifically includes following steps：
S101：To the sludge sample analysis moisture content shown up, sludge, wood flour class conditioner, sintering are determined according to moisture content
The ratio of rectorite and backflow grog, adding proportion is：Moisture content is sludge weight for the wood flour class conditioner of 8-12%
10%～20%, sintering rectorite for sludge weight 5%～15%, backflow grog is the 20%～25% of sludge weight, makes
Compound initial aqueous rate is up to 60%～70%；The happiness temperature Thermophilic Bacteria of the 0.1-0.15 ‰ of sludge weight is added to make during mixing simultaneously
To induce microbial inoculum；
S102：By sludge and in the load weighted wood flour class conditioner of ratio described in step S101, sintering rectorite, backflow
In grog and microbial inoculum input mixer, after being uniformly mixed, proceed in fermentation tank, it is underground logical by being laid on fermentation tank
Wind groove, with interval of the frequency of 2 hours of ventilation in 8 hours to heap body aeration.Throwing is turned over turner orientation during compost heats up, is turned over
It is every 24 hours～36 hours turning and throwing onces to throw frequency.
S103：When fermentation calefaction is to 55 DEG C -60 DEG C, continue by the stirring frequency that sets in step S102 run 10 days～
12 days terminate；Whole composting cycle is 15 days～18 days, and 55 DEG C maintain 5 days～6 days, makes sludge in loose uniform granule；Heap
Coliform value and roundworm egg inactivation ratio when fertilizer is completed in detection sludge；
S104：Sieved, sintering rectorite is separated from grog, use in returning to step S101, is circulated.
Sludge sample analysis moisture content to showing up is 75%～80%；Mud sample kind total organic matter 400/kgDM～
600g/kgDM, water solublity total nitrogen 3.0/kgDM～5.0g/kgDM, coliform value >=24,000MPN/kgDM.
Coliform value in the sludge detected when compost is completed is reduced to 30MPN/lOOgDM, roundworm egg inactivation ratio
L00%.
The sintering rectorite particle diameter is 3.1cm～3.5cm；The wood flour class conditioner includes wood flour, straw, rice husk.
The application principle of the present invention is further described with reference to specific embodiment.
Embodiment l
Sampling analyses are carried out to the dewatered sludge of Hubei municipal wastewater treatment plant (sanitary sewage), the fundamental property of sludge is：
Moisture content 78%, total organic matter 540g/kgDM, water solublity total nitrogen 3.1g/kgDM, coliform value >=23,000MPN/kgDM.
Then the wood flour and specification for adding moisture content 10% or so is two kinds of conditioners of Vermiculitum of 3.1-3.5cm as adjuvant, addition
Respectively the 20% and 5% of sludge weight.Above-mentioned material is put into into automatic blending system.The weight for controlling backflow material is sludge
The 25% of weight.Then stir, fermentation dominant microflora is uniformly mixed in material system.Pour fermentation tank into, with bar piece form
Pile discharges after 18 days are processed every orientation stirring in 12 hours 30 minutes, and weight of material reduces 39.5%.In detection sludge
Coliform value≤30MPN/100gDM, roundworm egg 100% are inactivated, and material particles are uniform.Finally sieved, by sintering tired support
Stone is separated from grog, is recycled in returning dispensing.
Embodiment 2
Sampling analyses are carried out to the dewatered sludge of Hubei municipal wastewater treatment plant (sanitary sewage), the fundamental property of sludge is：
Moisture content 77%, total organic matter 590g/kgDM, water solublity total nitrogen 3.3g/kgDM, coliform value >=23,000MPN/kgDM.
Then the wood flour and specification of addition moisture content 10% or so is two kinds of conditioners of sintering rectorite of 3.1-3.5cm as adjuvant,
Addition is respectively the 20% and 10% of sludge weight.Above-mentioned material is put into into automatic blending system.The weight of control backflow material
Measure 20% for sludge weight.Then stir, fermentation dominant microflora is uniformly mixed in material system.Pour fermentation tank into, with
Bar piece form pile discharges after 18 days are processed every orientation stirring in 12 hours 30 minutes, and weight of material reduces 41.3%.Inspection
Coliform value≤30MPN/100gDM in sludge is surveyed, roundworm egg 100% is inactivated, and material particles are uniform.Finally sieved, will
Sintering rectorite is separated from grog, is recycled in returning dispensing.
Embodiment 3
Sampling analyses are carried out to the dewatered sludge of Hubei municipal wastewater treatment plant (sanitary sewage), the fundamental property of sludge is：
Moisture content 80%, total organic matter 550g/kgDM, water solublity total nitrogen 3.2g/kgDM, coliform value >=24,000MPN/kgDM.
Then add the wood flour of moisture content 10% or so and if two kinds of conditioners of sintering rectorite of embodiment 1 are used as adjuvant, addition
Respectively the 15% and 15% of sludge weight.Above-mentioned material is put into into automatic blending system.The weight for controlling backflow material is dirt
The 20% of mud weight.Then stir, fermentation dominant microflora is uniformly mixed in material system.Fermentation tank is proceeded to, with bar piece shape
Formula pile.Every orientation stirring in 12 hours 30 minutes, discharge after 18 days are processed, weight of material reduces 40.5%.Detection is dirty
Coliform value≤30MPN/100gDM in mud, roundworm egg 100% are inactivated, and material particles are uniform.Finally sieved, will sintering
Rectorite is separated from grog, is recycled in returning dispensing.
The compost method for making adjuvant with rectorite that the present invention is provided, replaces the part of sludge composting to adjust with sintering rectorite
Reason agent --- wood flour and straw, serve as adjuvant during sludge composting, increase the gap between sludge, increase air exchange rate and exposure
Tolerance, plays thin oxygen agent effect；
To moisture content 75-80%, total organic matter 400-600g/kgDM, water solublity total nitrogen 3.0-5.0g/kgDM, coliform
The sludge of group's value 24000MPN/100gDM, the adjuvant of addition are respectively：Moisture content is that 10% wood flour and straw mixture are dirt
The 10-20% of mud weight, sinters 5-15% of the rectorite for sludge weight.Initial aqueous rate control before mud mixture compost exists
60%.
Sintering rectorite has ion exchangeable, can during compost and turning with sludge in chromium, lead, copper, zinc etc.
Metal ion is swapped, so as to reduce the content of beary metal of composting production.
Compost completes thing and is sieved, and the composting production for sifting out is into evengranular organic substrate, the sintering stayed in sieve
Rectorite returns dispensing link and recycles.
Due to the present invention using sintering rectorite as compost conditioner, be using the porous for sintering rectorite and adsorb from
The characteristic that son is exchanged, its Main Function is mainly by following two aspects：One permeability and laxity for being to increase compost, improves empty
Air-flow leads to, and makes composting fermentation process uniformity；Two is to adsorb the heavy metal ion in compost, is reduced in sludge to greatest extent
Content of beary metal.
It is relatively low as rectorite loss is sintered during use, it is easy to separate, reuse capable of circulation, the damage of each compost
Consumption rate is less than 5%.The cost for using wood flour is converted into part is lost and is worth, only 20% or so.Therefore the operation of the present invention into
This is cheap, and economic benefit is obvious.
As the present invention with the addition of Novel conditioning agent, compared with only with the tradition conditioner technique such as wood flour/wood chip, compost
Early warming speed is fast, and when compost is finished, the dehydration of heap body and cooling are rapider.Therefore, 5- can be shortened the time required to compost maturity
7 days, shorten about 1/4 than the composting cycle of domestic and international similar industrialization composting technology, therefore improve composting efficiency, while also more
It is suitable for automatically controlling for composting process.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of rectorite makees the compost method of adjuvant, it is characterised in that this is included with the compost method that rectorite makees adjuvant：
During sludge composting pretreatment spice, the wood flour class conditioner and sludge weight of sludge weight 10%～20% are added
5%～15% sintering rectorite, makes the starting material moisture content after stirring 60%～70%；
The turn pile frequency and aeration rate of control compost；
After compost terminates, sieved, formed evengranular organic substrate, sintering rectorite is separated from grog, followed
Ring is used.
2. a kind of compost method for making as claimed in claim 1 adjuvant with rectorite, it is characterised in that this makees auxiliary with rectorite
The compost method of material specifically includes following steps：
According to moisture content, step one, to the sludge sample analysis moisture content shown up, determines that sludge, wood flour class conditioner, sintering are tired
Hold in the palm stone and the ratio of the grog that flows back, adding proportion is：Moisture content is the 10% of sludge weight for the wood flour class conditioner of 8-12%
～20%, sintering rectorite for sludge weight 5%～15%, backflow grog is the 20%～25% of sludge weight, makes mixing
Expect initial aqueous rate up to 60%～70%；The happiness temperature Thermophilic Bacteria of 0.1-0.15 ‰ of sludge weight is added during mixing simultaneously as luring
Lead microbial inoculum；
Step 2, by sludge and in the load weighted wood flour class conditioner of ratio described in step one, sintering rectorite, backflow grog
In microbial inoculum input mixer, after being uniformly mixed, proceed in fermentation tank, by being laid on the underground ventilation of fermentation tank
Groove, with interval of the frequency of 2 hours of ventilation in 8 hours to heap body aeration；Throwing is turned over turner orientation during compost heats up, throwing is turned over
Frequency is every 24 hours～36 hours turning and throwing onces；
Step 3, when fermentation calefaction is to 55 DEG C -60 DEG C, continues to run 10 days～12 days by the stirring frequency set in step 2
Terminate；Whole composting cycle is 15 days～18 days, and 55 DEG C maintain 5 days～6 days, makes sludge in loose uniform granule；Compost is complete
Into when detect sludge in coliform value and roundworm egg inactivation ratio；
Step 4, is sieved, and sintering rectorite is separated from grog, use is circulated in returning to step one.
3. the compost method of adjuvant is made with rectorite as claimed in claim 2, it is characterised in that the sludge sampling point to showing up
Analysis moisture content is 75%～80%；Mud sample kind total organic matter 400/kgDM～600g/kgDM, water solublity total nitrogen 3.0/kgDM
～5.0g/kgDM, coliform value >=24,000MPN/kgDM.
4. the compost method of adjuvant is made with rectorite as claimed in claim 2, it is characterised in that the dirt detected when compost is completed
Coliform value in mud is reduced to 30MPN/lOOgDM, roundworm egg inactivation ratio l00%.
5. the compost method for making adjuvant with rectorite as described in claim 1～2 any one, it is characterised in that the burning
Knot rectorite particle diameter is 3.1cm～3.5cm；The wood flour class conditioner includes wood flour, straw, rice husk.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611032430.7A CN106518190A (en) | 2016-11-15 | 2016-11-15 | Composting method using rectorite as accessory material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611032430.7A CN106518190A (en) | 2016-11-15 | 2016-11-15 | Composting method using rectorite as accessory material |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367678A (en) * | 2008-09-27 | 2009-02-18 | 哈尔滨工业大学 | Amendment and uses of the same in sludge composting |
| CN101580412A (en) * | 2009-06-26 | 2009-11-18 | 哈尔滨工业大学 | Low-temperature aerobic composting method for organic solid waste |
| CN101913920A (en) * | 2010-08-09 | 2010-12-15 | 娄底市裕德科技有限公司 | Composite conditioner for preparing sludge compost and application thereof |
| CN102276318A (en) * | 2011-06-08 | 2011-12-14 | 武汉正清和环保科技开发有限公司 | Vermiculite oxygen dispersing agent and rapid composting fermentation method using the same for treating sludge |
| CN103819072A (en) * | 2014-02-27 | 2014-05-28 | 华东理工大学 | Sludge deep dehydration composite conditioner and its application |
-
2016
- 2016-11-15 CN CN201611032430.7A patent/CN106518190A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367678A (en) * | 2008-09-27 | 2009-02-18 | 哈尔滨工业大学 | Amendment and uses of the same in sludge composting |
| CN101580412A (en) * | 2009-06-26 | 2009-11-18 | 哈尔滨工业大学 | Low-temperature aerobic composting method for organic solid waste |
| CN101913920A (en) * | 2010-08-09 | 2010-12-15 | 娄底市裕德科技有限公司 | Composite conditioner for preparing sludge compost and application thereof |
| CN102276318A (en) * | 2011-06-08 | 2011-12-14 | 武汉正清和环保科技开发有限公司 | Vermiculite oxygen dispersing agent and rapid composting fermentation method using the same for treating sludge |
| CN103819072A (en) * | 2014-02-27 | 2014-05-28 | 华东理工大学 | Sludge deep dehydration composite conditioner and its application |
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