CN108178473A - A kind of environmental protection and energy saving processing method of municipal sludge - Google Patents
A kind of environmental protection and energy saving processing method of municipal sludge Download PDFInfo
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- CN108178473A CN108178473A CN201711495877.2A CN201711495877A CN108178473A CN 108178473 A CN108178473 A CN 108178473A CN 201711495877 A CN201711495877 A CN 201711495877A CN 108178473 A CN108178473 A CN 108178473A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- 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
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the 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
- C05F17/50—Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Tropical Medicine & Parasitology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of environmental protection and energy saving processing method of municipal sludge, by after municipal sludge is salvaged with the excess sludge of sewage treatment plants and digested sludge according to weight ratio 1:1:1 mixing, then adds in leavening agent and conditioner into mixing sludge；The leavening agent and conditioner add in double centner leavening agent and conditioner according to mixing sludge per ton, are then sent in constant temperature roller and ferment；Fermentation is aerobic fermentation for the first time, is mixed again with digested sludge after aerobic fermentation, is then sent in sealed thermostat roller and ferments, this fermentation is anaerobic fermentation.By the way that municipal sludge is prepared into fertilizer after fermenting twice.Present invention, which is not only able to effectively to handle municipal sludge, can also help sewage treatment plant to handle wastewater sludge, mitigate the pressure of sewage treatment plant.
Description
Technical field
The present invention relates to municipal sludge processing method, more particularly, to a kind of environmental protection and energy saving processing method of municipal sludge.
Background technology
With city size be growing and economic fast development, the quantum of output of municipal sludge be continuously increased and to
The ecological environment in The Surroundings in Cities and neighbouring river brings serious harm.The sharp increase of municipal sludge amount is brought to urban construction
Obstacle.Municipal sludge accounts for very big ratio in huge municipal refuse mountain.
In recent years, the effective treating method due to accumulation for many years and never, the sludge pollution in lake is to periphery
Ecological environment constitute a serious threat.Just by taking Dian Chi as an example, at present due to effective being controlled for one not yet Dianchi Lake Pollution
Reason method so that the sludge of Dian Chi bottom of pond deposited it is a thick layer of, only 6.4 kilometers of bank mud scums just up to more than 80,000 cubic metres,
The careless seabed mud area of Dian Chi is up to 7.5 square kilometres or so.Sludge and the marine nutritional ingredients such as nitrogen, phosphorus that are rich in of grass are planted to algae
Object provides sufficient nutrient so that algae overgrows, it is difficult to control, cause a large amount of aquatic animals dead, make Dian Chi from net energy
Power drastically declines；In addition, if do not administered to the various noxious materials in sludge and heavy metal element, then other improvement Yunnan
The method in pond is also difficult to obtain effect in a short time.
Well known sludge disposal technology is also relatively backward, and majority is using fertilising or stacking processing, seldom with other efficient nothings
The method of pollution.Fertilizer treatment is a more traditional technology, but be easy to cause secondary dirt of the sludge to environment during fertilising
It contaminates, the heavy metal in sludge is entered with fertilising process in ecological environment, this is to soil, plant, underground water or even air
Secondary pollution is caused, while is constituted a serious threat to food security, severely compromises the living environment and health of the mankind.It is each at present
State is just dedicated to finding newly innoxious, volume reduction and recycling method for sludge treatment.It is carried out using sludge as low calorie fuels
Burning disposal is because there is good innoxious, volume reduction and recycling effect to be taken seriously in some developed countries for it.But
Be since conventional incineration temperature is relatively low, generally at 800~1000 DEG C, other ingredients (such as Cl, S element) in sludge, Yi
The noxious pollutants such as new dioxin are generated during burning.And various countries attach great importance to the pollution of dioxin violent in toxicity and ask in recent years
Topic, therefore the prior art does not adapt to current stringent environmental requirement.
The present invention proposes one kind for municipal sludge method for innocent treatment, by dirty with the activity of sewage treatment plants
Mud mixes, and sludge is handled using the abundant micropopulation in activated sludge.
Invention content
Problem to be solved by this invention is, it is middle for the above-mentioned prior art the shortcomings that, propose innovation scheme, especially one
Kind can effectively solve the problem that municipal sludge is effectively treated and mitigates the scheme of sewage treatment plant's pressure.
To solve the above problems, the scheme that the present invention uses is as follows：A kind of environmental protection and energy saving processing method of municipal sludge,
It is characterized in that, described method includes following steps：
Step 1：With the excess sludge of sewage treatment plants and digested sludge according to weight ratio 1 after municipal sludge is salvaged:1:
1 mixing；
Step 2：Leavening agent and conditioner are added in into mixing sludge；The leavening agent and conditioner are according to mixing sludge per ton
Add in double centner leavening agent and conditioner；
Step 3：Mixing sludge after addition leavening agent and conditioner is stirred evenly；
Step 4：It ferments being delivered in constant temperature roller by the mixing sludge that step 3 stirs evenly；In the constant temperature roller
Equipped with heating unit；The heating unit heats the mixing sludge in constant temperature roller, and it is Celsius that mixing sludge is heated to 50-55
Degree, and constant temperature is kept, drive constant temperature roller so that mixing sludge continuing fermentation 30-35 days in constant temperature roller obtain level-one fertilizer
Material；The mixing sludge during continuing fermentation, is constantly passed through air in constant temperature roller into constant temperature roller, ensures constant temperature
Oxygen concentration in roller；
Step 5：It is delivered in sealed thermostat roller and ferments after level-one fertilizer obtained by step 4 is mixed with digested sludge；
Heating unit is equipped in the sealed thermostat roller；The heating unit heats the mixing sludge in sealed thermostat roller, will
Mixing sludge is heated to 15-30 degrees Celsius, and keeps constant temperature so that mixing sludge continuing fermentation 20- in sealed thermostat roller
30 days, and the gas collector by being arranged on sealed thermostat roller to the biogas that is generated in mixing sludge fermentation process into
Row Collection utilization obtains two level fertilizer.
Further, according to above-mentioned distinguishing feature municipal sludge environmental protection and energy saving processing method, which is characterized in that
The two level fertilizer that the mixing sludge obtains after the fermentation of constant temperature roller and the fermentation of sealed thermostat roller is delivered to air-dry machine
It inside carries out air-drying processing, and dispense the two level fertilizer after air-drying.
Further, according to above-mentioned distinguishing feature municipal sludge environmental protection and energy saving processing method, which is characterized in that
The leavening agent and the mixture that finishing agent is stalk, straw, sawdust and house refuse.
Further, according to above-mentioned distinguishing feature municipal sludge environmental protection and energy saving processing method, which is characterized in that
The stalk, straw, sawdust and house refuse are after crushing, according to 1:1:1:10 weight ratio is mixed.
Further, according to above-mentioned distinguishing feature municipal sludge environmental protection and energy saving processing method, which is characterized in that
The heat source of the heating unit of the constant temperature roller comes from industrial exhaust heat；The industrial exhaust heat is selected from steam waste heat, waste gas residual heat, cigarette
One or more of gas waste heat, cooling matrix waste heat, associated gas, refinery gas.
Further, according to above-mentioned distinguishing feature municipal sludge environmental protection and energy saving processing method, which is characterized in that
Temperature and humidity sensor is equipped in the constant temperature roller, the mixing sludge in constant temperature roller is carried out by temperature and humidity sensor real-time
Monitoring；Humidifier is equipped in the constant temperature roller；The constant temperature roller is reconciled the humidity in constant temperature roller by humidifier and is being held
First 20 days of supervention ferment are maintained at more than 30%.
Wherein, the excess sludge of the application is from secondary sedimentation tank in activated Sludge System（Or settling zone）Discharge
Activated sludge outside system.Digested sludge described herein is the sludge by anaerobic digestion, contains various anaerobes
Group.Activated sludge described herein is the flock containing various aerobic microbiological groups bred in aeration tank.
The technique effect of the present invention is as follows：The environmental protection and energy saving processing method of the municipal sludge of the application, by will municipal administration it is dirty
With the excess sludge of sewage treatment plants and digested sludge according to weight ratio 1 after mud salvaging:1:1 mixing, it is then dirty to mixing
Leavening agent and conditioner are added in mud；The leavening agent and conditioner according to mixing sludge per ton add in double centner leavening agent and
Conditioner is then sent in constant temperature roller and ferments；Fermentation is aerobic fermentation for the first time, dirty with digestion again after aerobic fermentation
Mud mixes, and is then sent in sealed thermostat roller and ferments, this fermentation is anaerobic fermentation.By after fermenting twice will municipal administration it is dirty
Mud is prepared into fertilizer.Present invention, which is not only able to effectively to handle municipal sludge, can also help sewage treatment plant to handle waste water
Sludge mitigates the pressure of sewage treatment plant.The present processes take full advantage of sewage treatment plant and are produced in sewage disposal process
Raw activated sludge and digested sludge.The environmental protection and energy saving processing method of the municipal sludge of the application is first in activated sludge
Abundant aerobic microbiological group carries out aerobic fermentation to municipal sludge, and abundant in activated sludge gets well the micropopulation that itches can
Accelerate this process, shorten the time of aerobic fermentation, similarly, it is to increase detesting in sludge to add in digested sludge after this
Oxygen animalcule prepares for the anaerobic fermentation of next step.
Specific embodiment
Embodiment 1：A kind of environmental protection and energy saving processing method of municipal sludge, described method includes following steps：
Step 1：With the excess sludge of sewage treatment plants and digested sludge according to weight ratio 1 after municipal sludge is salvaged:1:
1 mixing；
Step 2：Leavening agent and conditioner are added in into mixing sludge；The leavening agent and conditioner are according to mixing sludge per ton
Add in double centner leavening agent and conditioner；
Step 3：Mixing sludge after addition leavening agent and conditioner is stirred evenly；
Step 4：It ferments being delivered in constant temperature roller by the mixing sludge that step 3 stirs evenly；In the constant temperature roller
Equipped with heating unit；The heating unit heats the mixing sludge in constant temperature roller, and it is Celsius that mixing sludge is heated to 50-55
Degree, and constant temperature is kept, drive constant temperature roller so that mixing sludge continuing fermentation 30-35 days in constant temperature roller obtain level-one fertilizer
Material；The mixing sludge during continuing fermentation, is constantly passed through air in constant temperature roller into constant temperature roller, ensures constant temperature
Oxygen concentration in roller；
Step 5：It is delivered in sealed thermostat roller and ferments after level-one fertilizer obtained by step 4 is mixed with digested sludge；
Heating unit is equipped in the sealed thermostat roller；The heating unit heats the mixing sludge in sealed thermostat roller, will
Mixing sludge is heated to 15-30 degrees Celsius, and keeps constant temperature so that mixing sludge continuing fermentation 20- in sealed thermostat roller
30 days, and the gas collector by being arranged on sealed thermostat roller to the biogas that is generated in mixing sludge fermentation process into
Row Collection utilization obtains two level fertilizer.
Embodiment 2：A kind of environmental protection and energy saving processing method of municipal sludge, described method includes following steps：
Step 1：With the excess sludge of sewage treatment plants and digested sludge according to weight ratio 1 after municipal sludge is salvaged:1:
1 mixing；
Step 2：Leavening agent and conditioner are added in into mixing sludge；The leavening agent and conditioner are according to mixing sludge per ton
Add in double centner leavening agent and conditioner；
Step 3：Mixing sludge after addition leavening agent and conditioner is stirred evenly；
Step 4：It ferments being delivered in constant temperature roller by the mixing sludge that step 3 stirs evenly；In the constant temperature roller
Equipped with heating unit；The heating unit heats the mixing sludge in constant temperature roller, and it is Celsius that mixing sludge is heated to 50-55
Degree, and constant temperature is kept, drive constant temperature roller so that mixing sludge continuing fermentation 30-35 days in constant temperature roller obtain level-one fertilizer
Material；The mixing sludge during continuing fermentation, is constantly passed through air in constant temperature roller into constant temperature roller, ensures constant temperature
Oxygen concentration in roller；
Step 5：It is delivered in sealed thermostat roller and ferments after level-one fertilizer obtained by step 4 is mixed with digested sludge；
Heating unit is equipped in the sealed thermostat roller；The heating unit heats the mixing sludge in sealed thermostat roller, will
Mixing sludge is heated to 15-30 degrees Celsius, and keeps constant temperature so that mixing sludge continuing fermentation 20- in sealed thermostat roller
30 days, and the gas collector by being arranged on sealed thermostat roller to the biogas that is generated in mixing sludge fermentation process into
Row Collection utilization obtains two level fertilizer.By the mixing sludge after the fermentation of constant temperature roller and the fermentation of sealed thermostat roller
To two level fertilizer be delivered in air-dry machine carry out air-dry processing, and to air-dry after two level fertilizer dispense.
Embodiment 3：A kind of environmental protection and energy saving processing method of municipal sludge, described method includes following steps：
Step 1：With the excess sludge of sewage treatment plants and digested sludge according to weight ratio 1 after municipal sludge is salvaged:1:
1 mixing；
Step 2：Leavening agent and conditioner are added in into mixing sludge；The leavening agent and conditioner are according to mixing sludge per ton
Add in double centner leavening agent and conditioner；
Step 3：Mixing sludge after addition leavening agent and conditioner is stirred evenly；The leavening agent and finishing agent be stalk,
The mixture of straw, sawdust and house refuse；
Step 4：It ferments being delivered in constant temperature roller by the mixing sludge that step 3 stirs evenly；In the constant temperature roller
Equipped with heating unit；The heating unit heats the mixing sludge in constant temperature roller, and it is Celsius that mixing sludge is heated to 50-55
Degree, and constant temperature is kept, drive constant temperature roller so that mixing sludge continuing fermentation 30-35 days in constant temperature roller obtain level-one fertilizer
Material；The mixing sludge during continuing fermentation, is constantly passed through air in constant temperature roller into constant temperature roller, ensures constant temperature
Oxygen concentration in roller；
Step 5：It is delivered in sealed thermostat roller and ferments after level-one fertilizer obtained by step 4 is mixed with digested sludge；
Heating unit is equipped in the sealed thermostat roller；The heating unit heats the mixing sludge in sealed thermostat roller, will
Mixing sludge is heated to 15-30 degrees Celsius, and keeps constant temperature so that mixing sludge continuing fermentation 20- in sealed thermostat roller
30 days, and the gas collector by being arranged on sealed thermostat roller to the biogas that is generated in mixing sludge fermentation process into
Row Collection utilization obtains two level fertilizer.By the mixing sludge after the fermentation of constant temperature roller and the fermentation of sealed thermostat roller
To two level fertilizer be delivered in air-dry machine carry out air-dry processing, and to air-dry after two level fertilizer dispense.
Embodiment 4：A kind of environmental protection and energy saving processing method of municipal sludge, described method includes following steps：
Step 1：With the excess sludge of sewage treatment plants and digested sludge according to weight ratio 1 after municipal sludge is salvaged:1:
1 mixing；
Step 2：Leavening agent and conditioner are added in into mixing sludge；The leavening agent and conditioner are according to mixing sludge per ton
Add in double centner leavening agent and conditioner；
Step 3：Mixing sludge after addition leavening agent and conditioner is stirred evenly；The leavening agent and finishing agent be stalk,
The mixture of straw, sawdust and house refuse；The stalk, straw, sawdust and house refuse are after crushing, according to 1:1:1:
10 weight ratio is mixed；
Step 4：It ferments being delivered in constant temperature roller by the mixing sludge that step 3 stirs evenly；In the constant temperature roller
Equipped with heating unit；The heating unit heats the mixing sludge in constant temperature roller, and it is Celsius that mixing sludge is heated to 50-55
Degree, and constant temperature is kept, drive constant temperature roller so that mixing sludge continuing fermentation 30-35 days in constant temperature roller obtain level-one fertilizer
Material；The mixing sludge during continuing fermentation, is constantly passed through air in constant temperature roller into constant temperature roller, ensures constant temperature
Oxygen concentration in roller；
Step 5：It is delivered in sealed thermostat roller and ferments after level-one fertilizer obtained by step 4 is mixed with digested sludge；
Heating unit is equipped in the sealed thermostat roller；The heating unit heats the mixing sludge in sealed thermostat roller, will
Mixing sludge is heated to 15-30 degrees Celsius, and keeps constant temperature so that mixing sludge continuing fermentation 20- in sealed thermostat roller
30 days, and the gas collector by being arranged on sealed thermostat roller to the biogas that is generated in mixing sludge fermentation process into
Row Collection utilization obtains two level fertilizer.
Embodiment 5：A kind of environmental protection and energy saving processing method of municipal sludge, described method includes following steps：
Step 1：With the excess sludge of sewage treatment plants and digested sludge according to weight ratio 1 after municipal sludge is salvaged:1:
1 mixing；
Step 2：Leavening agent and conditioner are added in into mixing sludge；The leavening agent and conditioner are according to mixing sludge per ton
Add in double centner leavening agent and conditioner；
Step 3：Mixing sludge after addition leavening agent and conditioner is stirred evenly；
Step 4：It ferments being delivered in constant temperature roller by the mixing sludge that step 3 stirs evenly；In the constant temperature roller
Equipped with heating unit；The heating unit heats the mixing sludge in constant temperature roller, and it is Celsius that mixing sludge is heated to 50-55
Degree, and constant temperature is kept, drive constant temperature roller so that mixing sludge continuing fermentation 30-35 days in constant temperature roller obtain level-one fertilizer
Material；The mixing sludge during continuing fermentation, is constantly passed through air in constant temperature roller into constant temperature roller, ensures constant temperature
Oxygen concentration in roller；The heat source of the heating unit of the constant temperature roller comes from industrial exhaust heat；The industrial exhaust heat, which is selected from, to be steamed
One or more of vapour waste heat, waste gas residual heat, fume afterheat, cooling matrix waste heat, associated gas, refinery gas.
Step 5：It is delivered in sealed thermostat roller after level-one fertilizer obtained by step 4 is mixed with digested sludge
Fermentation；Heating unit is equipped in the sealed thermostat roller；The heating unit adds the mixing sludge in sealed thermostat roller
Mixing sludge is heated to 15-30 degrees Celsius, and keep constant temperature so that mixing sludge is persistently sent out in sealed thermostat roller by heat
Ferment 20-30 days, and the gas collector by being arranged on sealed thermostat roller is to generating in mixing sludge fermentation process
Biogas is collected utilization, obtains two level fertilizer；The heat source of the heating unit of the constant temperature roller comes from industrial exhaust heat；The work
The one kind of amateurish heat in steam waste heat, waste gas residual heat, fume afterheat, cooling matrix waste heat, associated gas, refinery gas
It is or several.
Claims (6)
1. the environmental protection and energy saving processing method of a kind of municipal sludge, which is characterized in that described method includes following steps：
Step 1：With the excess sludge of sewage treatment plants and activated sludge according to weight ratio 1 after municipal sludge is salvaged:1:
1 mixing；
Step 2：Leavening agent and conditioner are added in into mixing sludge；The leavening agent and conditioner are according to mixing sludge per ton
Add in double centner leavening agent and conditioner；
Step 3：Mixing sludge after addition leavening agent and conditioner is stirred evenly；
Step 4：It ferments being delivered in constant temperature roller by the mixing sludge that step 3 stirs evenly；In the constant temperature roller
Equipped with heating unit；The heating unit heats the mixing sludge in constant temperature roller, and it is Celsius that mixing sludge is heated to 50-55
Degree, and constant temperature is kept, drive constant temperature roller so that mixing sludge continuing fermentation 30-35 days in constant temperature roller obtain level-one fertilizer
Material；The mixing sludge during continuing fermentation, is constantly passed through air in constant temperature roller into constant temperature roller, ensures constant temperature
Oxygen concentration in roller；
Step 5：It is delivered in sealed thermostat roller and ferments after level-one fertilizer obtained by step 4 is mixed with digested sludge；
Heating unit is equipped in the sealed thermostat roller；The heating unit heats the mixing sludge in sealed thermostat roller, will
Mixing sludge is heated to 15-30 degrees Celsius, and keeps constant temperature so that mixing sludge continuing fermentation 20- in sealed thermostat roller
30 days, and the gas collector by being arranged on sealed thermostat roller to the biogas that is generated in mixing sludge fermentation process into
Row Collection utilization obtains two level fertilizer.
2. the environmental protection and energy saving processing method of municipal sludge according to claim 1, which is characterized in that pass through the mixing sludge
It crosses obtained two level fertilizer after the fermentation of constant temperature roller and the fermentation of sealed thermostat roller and is delivered in air-dry machine and carry out air-drying processing, and
Two level fertilizer after air-drying is dispensed.
3. the environmental protection and energy saving processing method of municipal sludge according to claim 1, which is characterized in that the leavening agent and arrangement
Agent is the mixture of stalk, straw, sawdust and house refuse.
4. the environmental protection and energy saving processing method of municipal sludge according to claim 3, which is characterized in that the stalk, straw, wood
Bits and house refuse are after crushing, according to 1:1:1:10 weight ratio is mixed.
5. the environmental protection and energy saving processing method of municipal sludge according to claim 1, which is characterized in that the constant temperature roller adds
The heat source of thermal comes from industrial exhaust heat；The industrial exhaust heat is selected from steam waste heat, waste gas residual heat, fume afterheat, cooling matrix
One or more of waste heat, associated gas, refinery gas.
6. the environmental protection and energy saving processing method of municipal sludge according to claim 1, which is characterized in that set in the constant temperature roller
There is temperature and humidity sensor, the mixing sludge in constant temperature roller is monitored in real time by temperature and humidity sensor；The constant temperature rolling
Humidifier is equipped in cylinder；The constant temperature roller reconciles humidity the protecting for first 20 days in continuing fermentation in constant temperature roller by humidifier
It holds more than 30%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109694169A (en) * | 2019-01-28 | 2019-04-30 | 北京太和洁源科技发展有限公司 | Organic sludge and solid waste biological treatment |
| CN110407626A (en) * | 2019-08-26 | 2019-11-05 | 河海大学 | A kind of intensified ecological type composting process |
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