CN108341729A - A kind of sludge high temperature aerobic fermentation process - Google Patents
A kind of sludge high temperature aerobic fermentation process Download PDFInfo
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- CN108341729A CN108341729A CN201810142942.1A CN201810142942A CN108341729A CN 108341729 A CN108341729 A CN 108341729A CN 201810142942 A CN201810142942 A CN 201810142942A CN 108341729 A CN108341729 A CN 108341729A
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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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
- A01G24/23—Wood, e.g. wood chips or sawdust
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
- A01G24/25—Dry fruit hulls or husks, e.g. chaff or coir
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/60—Apparatus for preparing growth substrates or culture media
-
- 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
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- 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
Abstract
The invention discloses a kind of sludge high temperature aerobic fermentation process, including：By sludge, auxiliary material, spike mixing is returned, and the C/N of sludge ratios, moisture content are separately adjusted to angularly (25~35):1 and 50%~60%；The mixture formed after processing of step A is mixed with high-temperature aerobic fermentation composite bacteria agent and is fermented；After the clinker after step B fermentation is sieved, you can.This method is using auxiliary material and returns spike conditioning of mud C/N ratios and moisture content, and realizes and automatically controlled to technological parameters such as material proportion, turn pile frequency, fermentation temperature, oxygen contents, and realizes waste heat recovery and recycling using waste-heat recovery device.The technique has the advantages such as high degree of automation, fermentation temperature are high, fermentation period is short, low energy consumption, operating cost is low, stink is small, clinker moisture content is low.By this technique, it can be achieved that the fast and harmless of municipal sludge, stabilisation, recycling, meet circular economy principle, have broad application prospects.
Description
Technical field
The present invention relates to sludge aerobic fermentation technical field, more particularly to a kind of sludge high temperature aerobic fermentation process.
Background technology
With the fast development of urbanization process, city domestic sewage and Industrial Wastewater Treatment amount quickly increase, at sewage
Reason adjunct sludge yield greatly increases, and how to handle and disposes these sludge, keeps its innoxious and efficiently use to be the world
The problem that various countries pay attention to jointly.In China, data show that, 90% or more does not have sludge in the sewage treatment plant built up
The auxiliary facility of processing；In some places, since abuse sludge causes heavy metal, organic pollution and pest and disease damage etc., directly
Jeopardize health, causes the secondary pollution to environment.
Currently, the processing method of domestic sludge mainly has aerobic fermentation, anaerobic digestion, burning disposal, landfill etc..China is big
Some Parts of Wastewater Treatment Plants sludge is mainly stacked, and a part enters city refuse landfill, but some big-and-middle cities at this stage
Sludge has been forbidden to enter in city；And some researches show that there is no final elimination pollutions only to have delayed environmental pollution generation for landfill
Time.Burning is higher using the organic principle of sludge, has the characteristics that certain calorific value carrys out disposing sludge.The technology of burning is excellent
Gesture be its processing completeness, but always exist following problem (1) investment and operating cost it is higher；(2) burning process
Middle generation flying dust, clinker and flue gas effect on environment are big；(3) useful component in sludge is underutilized.Sludge anaerobic
Digestion refer to sludge under anaerobic, the biodegradable organic matter in sludge is resolved by amphimicrobe and anaerobic bacteria
The digestion techniques of methane, carbon dioxide, water and hydrogen sulfide.But since China's sludge components are complex, anaerobic sludge digestion is real
The defects of that there is also factor of created gases in the application process of border is unstable, operation and maintenance are more difficult, the disposition period is long, and there are methane explosions
Risk.
Sludge aerobic fermentation technique is the process that aerobic fermentation is carried out using the aerobic microbiological in sludge.By sludge according to
Certain proportion is mixed with various additives, so that organic matter is converted into humus in the case of aerobic.But current sludge aerobic hair
There is also many problems for ferment technique, as fermentation period is long, take up a large area, the stink that ferments is big, tunning moisture content is high, early period
Big, operating cost height of investment etc., problem above directly constrains aerobic fermentation technology in sludge treatment and recycling process
In practical application.
Invention content
It is an object of the invention to overcome the problems, such as that existing sludge aerobic zymotechnique exists, as fermentation period is long, takes up an area
Area is big, fermentation stink is big, tunning moisture content is high, up-front investment is big, operating cost is high etc., and it is good to provide a kind of sludge high temperature
Aerobe fermentation technique, it is main to include mixing conditioning, high-temperature aerobic fermentation, clinker screening and the technical process such as time mix.The technique is added
High-temperature aerobic fermentation composite bacteria agent, using the fermentation auxiliary material such as stalk, sawdust, conditioning of mud C/N ratios and moisture content pass through intelligent control
System realization processed automatically controls the technological parameters such as material proportion, turn pile frequency, fermentation temperature, oxygen content, and more than utilization
Heat reclamation device realizes waste heat recovery and recycling；With high degree of automation, fermentation period is short, low energy consumption, operating cost
The low, advantages such as stink is small, clinker moisture content is low.
The purpose of the present invention is what is be achieved through the following technical solutions：
The present invention provides a kind of sludge high temperature aerobic fermentation process, include the following steps：
A, mixing conditioning：It by sludge, auxiliary material, returns spike and is sufficiently mixed by a certain percentage, make the C/N ratios, aqueous of mixture
Rate is separately adjusted to angularly (25~35):1 and 50%~60%；
B, high-temperature aerobic fermentation：The mixture formed after processing of step A is mixed with high-temperature aerobic fermentation composite bacteria agent
It ferments；
C, clinker sieves：After the clinker after step B fermentation is sieved, you can.
Since sewage plant sludge C/N is relatively low, the auxiliary materials such as sawdust, which are added, to be played the role of adjusting C/N, makes aerobic fermentation best
It is carried out under conditions of most fast, ammonia in exhaust gas is made to be reduced to a minimum.During aerobic fermentation, organic matter C/N, which is compared, to be divided
Solution speed has important influence.If carbon-nitrogen ratio is excessively high, the development of bacterium and other microorganisms is restricted, the decomposition of organic matter
Speed with regard to slow, just grow by composting process.Few for the carbon of consumption if carbon-nitrogen ratio is too low, nitrogen nutriment relative surplus, then nitrogen will
Become ammoniacal nitrogen and volatilize, nitrogen is caused largely to lose and reduce fertilizer efficiency.
When moisture content is too low, the ability that microorganism extracts nutriment in water reduces, and organic matter decomposes slow.Conversely,
When moisture content is excessively high, water will be full of the gap between material particles, block the channel of air, air content is made to largely reduce, heap
Fertilizer is converted from aerobic state to anaerobism, sharp temperature drop, as a result, forming smelly intermediate product.
Preferably, in the step A, auxiliary material is selected from mushroom residue, sawdust, stalk (grain size is 10~30mm), cavings, peanut
The mixture of one or more of shell；
Described time spike is the oversize of the gained after step C screenings；The grain size of the oversize is more than 4mm.
Preferably, in the step A, sludge, auxiliary material, return spike mixing quality ratio be 1:0.4:1.
Preferably, in the step B, high-temperature aerobic fermentation composite bacteria agent is bacillus subtilis, bacillus licheniformis, white
Rotten bacterium, trichoderma viride；The addition of high-temperature aerobic fermentation composite bacteria agent is 50-100g/t sludge.
Preferably, in the step B, the high-temperature aerobic fermentation period is 10 days, and oxygen content is controlled 15~20%.
Preferably, in the step B, high-temperature aerobic fermentation includes three phases：
Temperature rise period：Fermentation temperature rises to 55~65 DEG C by environment temperature, ferments 1~2 day；
Hot stage：Fermentation temperature rises to 80~110 DEG C by 55~65 DEG C, ferments 1~2 day, then at 80~110 DEG C
Lower fermentation 5~6 days；
Temperature-fall period：Fermentation temperature is down to room temperature by 80~110 DEG C, ferments 3~5 days.
Preferably, the fermentation system that the fermentation process uses includes installation for fermenting, blower device, deodorization device and waste heat
Retracting device；The blower device is connect by air delivering pipeline with installation for fermenting；One end of waste-heat recovery device and installation for fermenting
Connection, one end are connect with deodorization device, and the other end is connect with blower device；
Agitating device, temperature measuring probe, oxygen measurement probe and air delivering pipeline are provided in the installation for fermenting, it is described
Air delivering pipeline is arranged in the bottom of installation for fermenting, and the aeration head trepanning of air delivering pipeline is downward, in order to avoid block；
The agitating device, temperature measuring probe, oxygen measurement probe, blower device, deodorization device and waste heat recovery dress
It sets and is connect with automatic control system, and pass through automatic control system coordinated signals.
Preferably, the method for the coordinated signals specifically includes following steps：
The temperature rise period of fermentation：When temp probe feeds back heap temperature when within 65 DEG C, automatic control system control is roused
Wind apparatus, deodorization device ventilation quantity be 1.5~2.0m3/ (the dry mud of min ﹒ t)；The heat of waste-heat recovery device recycling passes through
Blower device is sent into installation for fermenting；
The hot stage of fermentation：When temp probe feedback heap temperature is more than 110 DEG C, automatic control system controls air blast
Device, deodorization device open forced aeration, exhaust, and ventilation quantity is 15~20m3/ (the dry mud of min ﹒ t), until temperature is down to 110
Within DEG C；The heat of waste-heat recovery device recycling is sent into installation for fermenting by blower device；Thus temperature is made to maintain 80-110
℃；
The temperature-fall period of fermentation：Automatic control system control blower device, deodorization device ventilation quantity be 1.5~
2.0m3/ (the dry mud of min ﹒ t)；And it is primary to the daily turning of heap body to control agitating device；The heat of waste-heat recovery device recycling passes through
Blower device is sent into installation for fermenting.Thus temperature is made to be down to room temperature.
The present invention also provides a kind of sludge high temperature aerobic fermentation systems, including installation for fermenting, blower device, deodorization device
And waste-heat recovery device；The blower device is connect by air delivering pipeline with installation for fermenting；One end of waste-heat recovery device and hair
Ferment device connects, and one end is connect with deodorization device, and the other end is connect with blower device；
Agitating device, temperature measuring probe, oxygen measurement probe and air delivering pipeline are provided in the installation for fermenting, it is described
Air delivering pipeline is arranged in the bottom of installation for fermenting, and the aeration head trepanning of air delivering pipeline is downward, in order to avoid block；
The agitating device, temperature measuring probe, oxygen measurement probe, blower device, deodorization device and waste heat recovery dress
It sets and is connect with automatic control system, and pass through automatic control system coordinated signals.
Preferably, the method for the coordinated signals specifically includes following steps：
The temperature rise period of fermentation：When temp probe feeds back heap temperature when within 65 DEG C, automatic control system control is roused
Wind apparatus, deodorization device ventilation quantity be 1.5~2.0m3/ (the dry mud of min ﹒ t)；The heat of waste-heat recovery device recycling passes through
Blower device is sent into installation for fermenting；
The hot stage of fermentation：When temp probe feedback heap temperature is more than 110 DEG C, automatic control system controls air blast
Device, deodorization device open forced aeration, exhaust, and ventilation quantity is 15~20m3/ (the dry mud of min ﹒ t), until temperature is down to 80
Within DEG C；The heat of waste-heat recovery device recycling is sent into installation for fermenting by blower device；Thus temperature is made to maintain 80-110
℃；
The temperature-fall period of fermentation：Automatic control system control blower device, deodorization device ventilation quantity be 1.5~
2.0m3/ (the dry mud of min ﹒ t)；And it is primary to the daily turning of heap body to control agitating device；The heat of waste-heat recovery device recycling passes through
Blower device is sent into installation for fermenting.Thus temperature is made to be down to room temperature.
Preferably, the fermentation system further includes discharging bin, mixing regulation machine, screening plant, and the discharging bin passes through pipe
Road is connect with the charge door of mixing regulation machine；The discharge port of the mixing regulation machine by automatic distributing machine and installation for fermenting plus
Material mouth connects；The entrance of the screening plant is connected by the discharge port of screw conveyor and installation for fermenting；Screening plant it is upper
It brings out mouth to connect with discharging bin by belt conveyor, lower end outlet is connect with baling press.
Preferably, the mixing regulation machine is spiral conveying stir mixing equipment, kiln type mixing equipment, mechanical fluidisation
One kind in bed type mixing equipment, mechanical fluidisation bed type mixing equipment.Pass through the uniform stirring of reamer radial direction and quantifying for axial direction
Disturbance, realizes being sufficiently mixed for material.
Preferably, the blower device is frequency conversion centrifugal fan or frequency conversion axial flow fan；Air delivering pipeline is corrosion-resistant material
Matter stainless steel, PVC or fiberglass.
Sludge of the present invention, auxiliary material return after spike is sufficiently mixed by a certain percentage, the mixture and high-temperature aerobic of formation
Compoiste fermented strain enters installation for fermenting through automatic distributing machine, is stirred evenly by agitating shaft, and is controlled by automatic control system
Temperature and oxygen content in fermentation process.Mixture is brought rapidly up under the action of high-temperature aerobic fermentation composite bacteria agent, passes through wind
Machine air blast and agitating shaft stirring, material moisture evaporate rapidly at high temperature, and moisture content rapid decrease, pathogen and weed seed are fast
Speed is killed.Material after fermentation is delivered to screening plant through screw rod conveyor, and after screening, oversize is by belt conveyor
It is spare to be delivered to go back to spike storehouse；Screenings is sold after being packaged by automatic packing machine.
Compared with the prior art, the invention has the advantages that：
High-temperature aerobic fermentation process for sludge of the present invention, main includes mixing conditioning, high-temperature aerobic fermentation, clinker sieve
Point and return and the technical process such as mix, pass through and add high-temperature aerobic fermentation composite bacteria agent, stalk, sawdust etc. ferment auxiliary material, conditioning of mud
C/N ratios and moisture content, can be realized using intelligence control system to works such as material proportion, turn pile frequency, fermentation temperature, oxygen contents
The automation control of skill parameter；And waste-heat recovery device is utilized, realize waste heat recovery and recycling.The more current sludge of the technique
Aerobic fermentation process, have high degree of automation, fermentation temperature it is high (temperature reaches as high as 110 DEG C, running temperature control 80 DEG C with
It is interior), fermentation period short (10-15 days), low energy consumption, operating cost is low, stink is small, clinker moisture content low (10~25%) etc. is excellent
Gesture；Wherein, the more current sludge aerobic zymotechnique of fermentation period, operating cost reduces about 50%, and up-front investment saves about 30%,
Sludge clinker moisture content low about 45%.This technique generate sludge fermentation clinker (screenings) can be used for produce soil organic fertilizer or
As afforestation soil, there is certain improving effect to soil physics, chemistry and biological character.It can be realized by this technique
The fast and harmless of municipal sludge, stabilisation, recycling meet circular economy principle, have broad application prospects.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the high-temperature aerobic fermentation process for sludge of the present invention.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection domain.
The sludge high temperature aerobic fermentation system of middle use, including installation for fermenting, blower device, deodorization device are implemented below
And waste-heat recovery device；The blower device is connect by air delivering pipeline with installation for fermenting；One end of waste-heat recovery device and hair
Ferment device connects, and one end is connect with deodorization device, and the other end is connect with blower device；
Agitating device, temperature measuring probe, oxygen measurement probe and air delivering pipeline are provided in the installation for fermenting, it is described
Air delivering pipeline is arranged in the bottom of installation for fermenting, and the aeration head trepanning of air delivering pipeline is downward, in order to avoid block；
The agitating device, temperature measuring probe, oxygen measurement probe, blower device, deodorization device and waste heat recovery dress
It sets and is connect with automatic control system, and pass through automatic control system coordinated signals.
The fermentation system further include discharging bin, mixing regulation machine, screening plant, the discharging bin by pipeline with mix
The charge door of regulation machine connects；The discharge port of the mixing regulation machine is connected by the charge door of automatic distributing machine and installation for fermenting
It connects；The entrance of the screening plant is connected by the discharge port of screw conveyor and installation for fermenting；The upper end outlet of screening plant
It is connect with discharging bin by belt conveyor, lower end outlet is connect with baling press.
The mixing regulation machine is that spiral stir mixing equipment, kiln type mixing equipment, the mechanical fluidisation bed type of conveying is mixed
Expect one kind in equipment, mechanical fluidisation bed type mixing equipment.Uniform stirring by reamer radial direction and axial quantitative disturbance, it is real
Existing material is sufficiently mixed.
The blower device is frequency conversion centrifugal fan or frequency conversion axial flow fan；Air delivering pipeline is that corrosion-resistant material is stainless
Steel, PVC or fiberglass.
Embodiment 1
Shanghai Sewage Treatment at Pharmaceutical Factory station dewatered sludge yield is 1t/d, and moisture content 82% is using the present invention
Technique has carried out high-temperature aerobic fermentation, as shown in Figure 1, specifically including following steps：
(1) mixing conditioning
Sludge, auxiliary material (sawdust) return spike (clinker) warehouse discharging by the screw conveyor conveying with function of measuring, control matter
Measure ratio 1:0.4:1, it is sufficiently mixed using mixing regulation machine (spiral conveying stir mixing machine), makes the C/N ratios, aqueous of mixture
Rate is separately adjusted to angularly 35:1 and 60%.Sludge, sawdust, time spike moisture content are respectively 82%, 15% and 20%.
(2) high-temperature aerobic fermentation
Mixture, high-temperature aerobic fermentation composite bacteria enter aerobic fermentation tank through automatic distributing machine.Aerobic fermentation tank includes
Temperature, oxygen monitoring probe, agitating shaft, blower system, deodoration system, waste-heat recovery device, the above equipment are connected to automatically
Control system, and by automatic control system coordinated signals.Material is stirred evenly by agitating shaft, and is controlled by automatic control system
Temperature and oxygen content in fermentation process.
Mixture is brought rapidly up under the action of high-temperature aerobic fermentation composite bacteria agent, is stirred by wind turbine air blast and agitating shaft
It mixes, material moisture evaporates rapidly at high temperature.Blower system is by frequency conversion cfentrifugal blower and to be layed in installation for fermenting bottom
For the air delivering pipeline in portion to installation for fermenting forward direction blast aeration, air delivering pipeline is corrosion-resistant material stainless steel.The aeration of air delivering pipeline
Head trepanning is downward, in order to avoid block.The high-temperature aerobic fermentation period is 10 days, and oxygen content is controlled 15~20%, is divided into three ranks
Section, the first stage is the temperature rise period, and heap temperature gradually rises to 55~65 DEG C, 1 day from environment temperature；Second stage is high temperature
In the stage, 55~65 DEG C rise to 80~110 DEG C, 1 day, and control and ferment 5 days at 80~110 DEG C；Phase III is temperature-fall period, 3
It.
Automatic control system inter-linked controlling method is specially：
Temperature rise period, when temp probe feed back heap temperature when within 65 DEG C, automatic control system control blower system,
The ventilation quantity of deodoration system is 1.5~2.0m3/ (the dry mud of min ﹒ t)；The heat of waste-heat recovery device recycling passes through blower system
It is sent into installation for fermenting；
Hot stage, when temp probe feedback heap temperature is more than 110 DEG C, automatic control system control blower system,
Deodoration system opens forced aeration, exhaust, and ventilation quantity is 15~20m3/ (the dry mud of min ﹒ t), until temperature be down to 110 DEG C with
It is interior；The heat of waste-heat recovery device recycling is sent into installation for fermenting by blower system；
Temperature-fall period, automatic control system controls blower system, the ventilation quantity of deodoration system is 1.5~2.0m3/
(the dry mud of min ﹒ t)；And it is primary to the daily turning of heap body to control agitating device；The heat of waste-heat recovery device recycling passes through air blast system
System is sent into installation for fermenting.
(3) clinker is sieved and is returned and mixes
Material after fermentation is delivered to screening plant through screw rod conveyor, and after screening, oversize is by belt conveyor
It is spare to be delivered to go back to spike storehouse；Screenings is sold to organic fertilizer company after being packaged by automatic packing machine, as organic fertilizer raw material.This
Material in embodiment after fermentation after testing, moisture content 20%.
Embodiment 2
Hainan papermaking sewage treating stations dewatered sludge yield is 400t/d, moisture content 80%, using the present invention
Technique carried out high-temperature aerobic fermentation, as shown in Figure 1, specifically including following steps：
(1) mixing conditioning
Sludge, auxiliary material (stalk) return spike (clinker) warehouse discharging by the screw conveyor conveying with function of measuring, control matter
Measure ratio 1:0.4:1, it is sufficiently mixed using mixing regulation machine (spiral conveying stir mixing machine), makes the C/N ratios, aqueous of mixture
Rate is separately adjusted to angularly 25:1 and 50%.Sludge, stalk, time spike moisture content are respectively 82%, 15% and 20%.
(2) high-temperature aerobic fermentation
Mixture, high-temperature aerobic fermentation composite bacteria enter aerobic fermentation slot through automatic distributing machine.Aerobic fermentation slot includes
Temperature, oxygen monitoring probe, agitating shaft, blower system, deodoration system, waste-heat recovery device, the above equipment are connected to automatically
Control system, and by automatic control system coordinated signals.Material is stirred evenly by agitating shaft, and is controlled by automatic control system
Temperature and oxygen content in fermentation process.
Mixture is brought rapidly up under the action of high-temperature aerobic fermentation composite bacteria agent, is stirred by wind turbine air blast and agitating device
It mixes, material moisture evaporates rapidly at high temperature.Blower system is by frequency conversion cfentrifugal blower and to be layed in installation for fermenting bottom
For the air delivering pipeline in portion to installation for fermenting forward direction blast aeration, air delivering pipeline is corrosion-resistant material stainless steel.The aeration of air delivering pipeline
Head trepanning is downward, in order to avoid block.The high-temperature aerobic fermentation period is 15 days, and oxygen content is controlled 15~20%, is divided into three ranks
Section, the first stage is the temperature rise period, and heap temperature gradually rises to 55~65 DEG C, 2 days from environment temperature；Second stage is high temperature
In the stage, 55~65 DEG C rise to 110 DEG C, 2 days, and control and ferment 6 days at 110 DEG C；Phase III is temperature-fall period, 5 days.
Automatic control system inter-linked controlling method is specially：
Temperature rise period, when temp probe feed back heap temperature when within 65 DEG C, automatic control system control blower system,
The ventilation quantity of deodoration system is 1.5~2.0m3/ (the dry mud of min ﹒ t)；The heat of waste-heat recovery device recycling passes through blower system
It is sent into installation for fermenting；
Hot stage, when temp probe feedback heap temperature is more than 110 DEG C, automatic control system control blower system,
Deodoration system opens forced aeration, exhaust, and ventilation quantity is 15~20m3/ (the dry mud of min ﹒ t), until temperature be down to 110 DEG C with
It is interior；The heat of waste-heat recovery device recycling is sent into installation for fermenting by blower system；
Temperature-fall period, automatic control system controls blower system, the ventilation quantity of deodoration system is 1.5~2.0m3/
(the dry mud of min ﹒ t)；And it is primary to the daily turning of heap body to control agitating device；The heat of waste-heat recovery device recycling passes through air blast system
System is sent into installation for fermenting.
(3) clinker is sieved and is returned and mixes
Material after fermentation is delivered to screening plant through screw rod conveyor, and after screening, oversize is by belt conveyor
It is spare to be delivered to go back to spike storehouse；Screenings is sold to organic fertilizer company after being packaged by automatic packing machine, as organic fertilizer raw material.This
Material in embodiment after fermentation after testing, moisture content 15%.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the absence of conflict, the feature in embodiments herein and embodiment can arbitrary phase
Mutually combination.
Claims (10)
1. a kind of sludge high temperature aerobic fermentation process, which is characterized in that include the following steps：
A, mixing conditioning：Sludge, auxiliary material, time spike are sufficiently mixed by a certain percentage, make C/N ratios, the moisture content point of mixture
It does not adjust to (25~35):1 and 50%~60%；
B, high-temperature aerobic fermentation：The mixture formed after processing of step A is mixed into progress with high-temperature aerobic fermentation composite bacteria agent
Fermentation；
C, clinker sieves：After the clinker after step B fermentation is sieved, you can.
2. sludge high temperature aerobic fermentation process according to claim 1, which is characterized in that in the step A, auxiliary material is selected from
The mixture of one or more of mushroom residue, sawdust, stalk, cavings, peanut shell；
Described time spike is the oversize of the gained after step C screenings；The grain size of the oversize is more than 4mm.
3. sludge high temperature aerobic fermentation process according to claim 1, which is characterized in that sludge, auxiliary in the step A
Material, the mixing quality ratio for returning spike are 1:0.4:1.
4. sludge high temperature aerobic fermentation process according to claim 1, which is characterized in that in the step B, high-temperature aerobic
Compoiste fermented microbial inoculum is bacillus subtilis, bacillus licheniformis, whiterot fungi, trichoderma viride；High-temperature aerobic fermentation compound bacteria
The addition of agent is 50-100g/t sludge.
5. sludge high temperature aerobic fermentation process according to claim 1, which is characterized in that in the step B, high-temperature aerobic
Fermentation period is 10~15 days, and oxygen content is controlled 15~20%.
6. sludge high temperature aerobic fermentation process according to claim 5, which is characterized in that in the step B, high-temperature aerobic
Fermentation includes three phases：
Temperature rise period：Fermentation temperature rises to 55~65 DEG C by environment temperature, ferments 1~2 day；
Hot stage：Fermentation temperature rises to 80~110 DEG C by 55~65 DEG C, ferments 1~2 day, is then issued at 80~110 DEG C
Ferment 5~6 days；
Temperature-fall period：Fermentation temperature is down to room temperature by 80~110 DEG C, ferments 3~5 days.
7. sludge high temperature aerobic fermentation process according to claim 1 or 6, which is characterized in that the fermentation process uses
Fermentation system include installation for fermenting, blower device, deodorization device and waste-heat recovery device；The blower device passes through appendix
Road is connect with installation for fermenting；One end of waste-heat recovery device is connect with installation for fermenting, and one end is connect with deodorization device, the other end with
Blower device connects；
Agitating device, temperature measuring probe, oxygen measurement probe and air delivering pipeline, the gas transmission are provided in the installation for fermenting
Pipeline is arranged in the bottom of installation for fermenting, and the aeration head trepanning of air delivering pipeline is downward；
The agitating device, temperature measuring probe, oxygen measurement probe, blower device, deodorization device and waste-heat recovery device are equal
It is connect with automatic control system, and passes through automatic control system coordinated signals.
8. sludge high temperature aerobic fermentation process according to claim 7, which is characterized in that the method for the coordinated signals has
Body includes the following steps：
The temperature rise period of fermentation：When temp probe feeds back heap temperature when within 65 DEG C, automatic control system controls air blast dress
It sets, the ventilation quantity of deodorization device is 1.5~2.0m3/ (the dry mud of min ﹒ t)；The heat of waste-heat recovery device recycling passes through air blast
Device is sent into installation for fermenting；
The hot stage of fermentation：When temp probe feedback heap temperature is more than 110 DEG C, automatic control system controls air blast dress
It sets, deodorization device unlatching forced aeration, be vented, ventilation quantity is 15~20m3/ (the dry mud of min ﹒ t), until temperature is down to 110 DEG C
Within；The heat of waste-heat recovery device recycling is sent into installation for fermenting by blower device；
The temperature-fall period of fermentation：Automatic control system controls blower device, the ventilation quantity of deodorization device is 1.5~2.0m3/
(the dry mud of min ﹒ t)；And it is primary to the daily turning of heap body to control agitating device；The heat of waste-heat recovery device recycling is filled by air blast
Set feeding installation for fermenting.
9. a kind of sludge high temperature aerobic fermentation system, which is characterized in that including installation for fermenting, blower device, deodorization device and remaining
Heat reclamation device；The blower device is connect by air delivering pipeline with installation for fermenting；One end of waste-heat recovery device is filled with fermentation
Connection is set, one end is connect with deodorization device, and the other end is connect with blower device；
Agitating device, temperature measuring probe, oxygen measurement probe and air delivering pipeline, the gas transmission are provided in the installation for fermenting
Pipeline is arranged in the bottom of installation for fermenting, and the aeration head trepanning of air delivering pipeline is downward；
The agitating device, temperature measuring probe, oxygen measurement probe, blower device, deodorization device and waste-heat recovery device are equal
It is connect with automatic control system, and passes through automatic control system coordinated signals.
10. sludge high temperature aerobic fermentation system according to claim 9, which is characterized in that the fermentation system further includes
Discharging bin, mixing regulation machine, screening plant, the discharging bin are connect by pipeline with the charge door of mixing regulation machine；It is described mixed
The discharge port for closing regulation machine is connected by the charge door of automatic distributing machine and installation for fermenting；The entrance of the screening plant passes through spiral shell
The discharge port of bar conveyer and installation for fermenting connects；The upper end outlet of screening plant is connect by belt conveyor with discharging bin,
Lower end outlet is connect with baling press.
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| CN108821897A (en) * | 2018-09-21 | 2018-11-16 | 无锡国联环保科技股份有限公司 | A kind of sludge aerobic fermented manure technique and system |
| CN109354520A (en) * | 2018-12-20 | 2019-02-19 | 湖南先导洋湖再生水有限公司 | A kind of aerobic dynamic composting process of continous way using sludge and stalk |
| CN110183079A (en) * | 2019-06-11 | 2019-08-30 | 湖南隆辉环保有限公司 | A kind of Sludge aerobic fermentation treatment method |
| CN110252781A (en) * | 2019-07-26 | 2019-09-20 | 郑州同济环保工程有限公司 | Rubbish three phase separation treatment process |
| CN110330201A (en) * | 2019-08-12 | 2019-10-15 | 泰安清源水务有限公司 | A kind of municipal sludge high temperature pure oxygen aeration fermentative production system and technique |
| CN110326513A (en) * | 2019-06-05 | 2019-10-15 | 长江大学 | A kind of disease-resistant seedling medium production method based on sludge |
| CN110404938A (en) * | 2019-07-31 | 2019-11-05 | 中大万邦(厦门)有机质科技有限公司 | Mixing chamber formula aerobic fermentation device built in a kind of continuous horizontal |
| CN110436726A (en) * | 2019-09-09 | 2019-11-12 | 上海万唐工程技术有限公司 | A kind of batch-type sludge aerobic fermentation treatment device and its treatment process |
| WO2021208544A1 (en) * | 2020-04-16 | 2021-10-21 | 华中科技大学 | Self-sustaining smoldering and high-temperature aerobic fermentation combined sludge disposal process and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108821897A (en) * | 2018-09-21 | 2018-11-16 | 无锡国联环保科技股份有限公司 | A kind of sludge aerobic fermented manure technique and system |
| CN109354520A (en) * | 2018-12-20 | 2019-02-19 | 湖南先导洋湖再生水有限公司 | A kind of aerobic dynamic composting process of continous way using sludge and stalk |
| CN110326513A (en) * | 2019-06-05 | 2019-10-15 | 长江大学 | A kind of disease-resistant seedling medium production method based on sludge |
| CN110326513B (en) * | 2019-06-05 | 2022-04-29 | 长江大学 | Disease-resistant seedling raising substrate production method based on sludge |
| CN110183079A (en) * | 2019-06-11 | 2019-08-30 | 湖南隆辉环保有限公司 | A kind of Sludge aerobic fermentation treatment method |
| CN110252781A (en) * | 2019-07-26 | 2019-09-20 | 郑州同济环保工程有限公司 | Rubbish three phase separation treatment process |
| CN110404938A (en) * | 2019-07-31 | 2019-11-05 | 中大万邦(厦门)有机质科技有限公司 | Mixing chamber formula aerobic fermentation device built in a kind of continuous horizontal |
| CN110330201A (en) * | 2019-08-12 | 2019-10-15 | 泰安清源水务有限公司 | A kind of municipal sludge high temperature pure oxygen aeration fermentative production system and technique |
| CN110436726A (en) * | 2019-09-09 | 2019-11-12 | 上海万唐工程技术有限公司 | A kind of batch-type sludge aerobic fermentation treatment device and its treatment process |
| WO2021208544A1 (en) * | 2020-04-16 | 2021-10-21 | 华中科技大学 | Self-sustaining smoldering and high-temperature aerobic fermentation combined sludge disposal process and device |
| CN114208625A (en) * | 2021-11-22 | 2022-03-22 | 中交（天津）生态环保设计研究院有限公司 | Dehydration fermentation treatment method for river and lake bottom mud |
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Application publication date: 20180731 |