CN106746477A - A kind of urban wastewater treatment firm Treatment of Sludge and resource utilization method - Google Patents
A kind of urban wastewater treatment firm Treatment of Sludge and resource utilization method Download PDFInfo
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- CN106746477A CN106746477A CN201611143265.2A CN201611143265A CN106746477A CN 106746477 A CN106746477 A CN 106746477A CN 201611143265 A CN201611143265 A CN 201611143265A CN 106746477 A CN106746477 A CN 106746477A
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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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
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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
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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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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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Treatment Of Sludge (AREA)
Abstract
The invention provides a kind of urban wastewater treatment firm Treatment of Sludge and method of resource, the method is related to the technical process such as deeply dehydrating sludge, sludge composting, crushing and screening and pyrolyzing sludge.The present invention is using molysite, aluminium salt or calcium oxide as main conditioner, the moisture content in sludge is reduced to less than 65% by more than 97% by deep dehydration, then the deep dehydration sludge by moisture content below 65% carries out sludge composting, moisture percentage in sewage sludge is reduced to less than 35% by 65%, the energy consumption of drying process during pyrolyzing sludge is significantly reduced.The present invention gives full play to the biological dewatered effect during sludge composting, strong with sludge carrying capacity, and the low advantage of energy consumption is capable of achieving energy-conservation more than 50%.It has been realized with a low cost the minimizing of urban life sludge, innoxious and resource problem, realize the efficient process disposal of sludge, can produce simultaneously with compared with high value-added product, with boundless application prospect, can have a tremendous social and economic benefits.
Description
Technical field
The invention belongs to urban wastewater treatment firm Treatment of Sludge and disposal technology and energy field, more particularly to a kind of cities and towns
Sludge of sewage treatment plant treatment and resource utilization method.
Background technology
2008, the urban wastewater treatment firm 1529 that the whole nation is put into operation, sewage load was produced up to 233 billion cubic meters
Raw about 16,000,000 tons of the sludge of moisture content 80%；According to live build portion《Urban Construction in China statistical yearbook》Statistics, sewage disposal in 2014
Ability is 130,870,000 ton days, and sewage load increases year after year, sludge as sewage disposal accessory substance, its yield is also therewith
Increase, 2014 end of the year China's municipal sewage treatment amounts are up to 38,272,390,000 tons, and municipal sludge yield is 21,430,000 tons and (presses 10,000
Ton sewage produces 5.6 tons of wet muds to calculate), compared with amount of increase nearly 33.9% in 2008.Currently, the sludge that town sewage plant is produced is main
Processing method has landfill, burning, forest land utilizes and building materials are utilized, wherein in most cities, landfill still occupies larger
Ratio.Increasingly in short supply with urban land resource, Sludge landfill disposal will progressively be prohibited.Therefore, from sludge reduction angle
From the point of view of degree, developing low-cost, extensive sludge reduction technology are the primary measures for solving sludge ultimate disposal.
In view of sludge composting is optimal generally 60% or so, there is good connecting with deeply dehydrating sludge, and pass through
Technology controlling and process, sludge composting can be realized for moisture percentage in sewage sludge being reduced to less than 40% at a lower cost.From the energy, it is economical and
From the point of view of environment, the sludge after compost is mutually connected with pyrolytic process, sludge reduction and resource can be effectively realized,
Simultaneously as pyrolysis process system is carried out under anaerobic state, the dirt such as bioxin in sludge handling process can be effectively reduced
The generation of thing is contaminated, the pollution problems such as the flying dust, bioxin that is produced due to burning can be to the full extent avoided.
The present invention develops a kind of by deeply dehydrating sludge, sludge composting and the integrated technique skill of pyrolyzing sludge resource
Art, solves the problems, such as that sludge composting treatment is connected with pyrolytic process, can effectively realize the minimizing of sludge, innoxious and money
Source, is conducive to promoting the development and the raising of green technology of China's town domestic sewage treatment plant Treatment of Sludge and disposal.
The content of the invention
The purpose of the present invention is directed to a series of environment produced in urban wastewater treatment firm Treatment of Sludge and disposal process
Problem and the characteristics of the research that carries out, set deeply dehydrating sludge, sludge composting and pyrolytic process technology, it is proposed that a kind of cities and towns
Sludge of sewage treatment plant treatment and resource utilization method.Domestic sludge using urban wastewater treatment firm generation leads to as raw material
The minimizing of sludge, innoxious and resource are realized in the treatment for crossing technique integrated technology, and sludge base can be produced by the technique
Activated carbon and pyrolysis oil, pyrolysis oil can be used for fuel oil or chemical products crude product.
The present invention takes following technical scheme：It is characterized in that being provided with following steps：
A kind of urban wastewater treatment firm Treatment of Sludge and resource utilization method, it is characterised in that the method includes following
Step：
(1) sludge conditioning and deep dehydration：
The sludge of moisture content 95%~99.7% is pumped into sludge conditioning pond, additive is added：The throwing of molysite additive
Dosage is 30kg-150kg/t over dry sludge, or the dosage of aluminium salt additive is 30-120kg/t over dry sludge, or calcium oxide
Dosage be 10kg-500kg/t over dry sludge；Add organic flocculant：Polyacrylamide PAM or derivatives thereof, it is added
It is 1~5kg/t over dry sludge to measure；Stirring 20~60 minutes；Sludge after conditioning is pumped into dewaterer carries out deep dehydration, depth
Moisture percentage in sewage sludge 50%~65% is reached after dehydration；
(2) sludge composting：
Sludge after deep dehydration is crushed through helicoidal pump and is transported to compost, crushing and screening place, sludge is reached particle diameter
3-7cm, then carries out sludge composting, and sludge composting, crushing and screening are as far as possible compact on space is arranged, sludge composting workshop and heap
Fertile warehouse is provided with dustproof facilities, and waste height is 1.0~1.5m in composting process；Auxiliary material is added in composting process：Rice husk, straw
One or more in stalk, mushroom residue, wood chip, house refuse, it is 0~200% that auxiliary material adds ratio, and moisture percentage in sewage sludge is adjusted
To 60% or so, C/N than 25~30, and aeration with air blower and carry out turning over throwing, aeration rate is 0.1~1.0m3/(min·
m3)；It is 1~2 times/day to turn over the throwing frequency；The compost duration is 15~30 days；Moisture percentage in sewage sludge is reduced to 20%~35%；
(3) sludge is sieved and broken：
In the composting process through biological agent, turn under the effect such as throwing, sludge particle diameter is gradually reduced, average grain diameter 2cm~
4cm or so, after sieving and be broken, below 0.5cm is reduced to by the particle diameter of sludge；
(4) pyrolyzing sludge：
Sludge after will be broken carries out pyrolytic reaction in pyrolysis reactor furnace, and pyrolysis reaction temperature is 400 DEG C~650 DEG C,
Residence time is 30min~90min, and the pyrolysis gas produced in pyrolytic process are fully burnt in being back to pyrolysis reactor furnace,
The purified rear emptying of flue dust in pyrolytic process；
(5) thermal decomposition product is separated and metering
After volatile matter during pyrolyzing sludge is separated out from the surface of solids, under the conditions of being higher than 300 DEG C in temperature, using whirlwind
Separator carries out gas solid separation, the solid isolated as sludge-based activated carbon；After gas solid separation, using temperature control method step by step point
Stage reclaims the fuel oil of the different boiling in volatile matter, under the conditions of 220 DEG C, will reclaim weight of the boiling point higher than 220 DEG C first
Oil product, then reclaims the light oil products higher than 120 DEG C, and then receive in normal temperature water-cooling pattern in the condenser higher than 120 DEG C
Collect the water-phase product based on water.
Product dosage mode in this patent：Under the conditions of being higher than 300 DEG C in temperature, gas-solid point is carried out using cyclone separator
From the solid being collected into after gas solid separation is the yield of sludge-based activated carbon after measuring；Using two-part cooling method step by step
Volatile matter fractional condensaion is carried out, the amount of the liquid product that recovered temperature is reclaimed in the range of 300 DEG C~120 DEG C is pyrolysis oil product
Amount, and water phase yield is using the liquid product that normal temperature water condensation is reclaimed.
(6) water is mutually pre-processed
Water is mutually pre-processed using absorption-chemical oxidation mode, adsorbent can be using the dirt produced in technical process
Mud matrix activated carbon, chemical oxidation can use ozone；By after pretreatment, water outlet enters urban wastewater treatment firm.
(7) packaging is in store for：
By obtaining sludge-based activated carbon, fuel oil crude product after pyrolytic reaction, then product is dried, is packed,
It is in store for；During the whole service of this method, the gas of each step is discharged all by strict purified treatment, all volatilizations
The discharge of thing and gas meets discharge standard GB16297.
The present invention is further improved and the additional project of implementation is：
Described molysite additive is PAFS, bodied ferric sulfate, ferrous sulfate, ferric sulfate, ferric trichloride are worked as
In any one or a few；Described aluminium salt additive is any one in aluminium polychloride, polyaluminium sulfate and calcium oxide
Plant or several.
Described dewaterer is plate and frame filter press, diaphragm filter press, any one in the middle of chamber-type press filter.
Described pyrolysis reactor furnace is anti-fixed-bed pyrolysis reacting furnace, two-part pyrolysis reacting furnace, moving bed pyrolysis
Answer the one kind in the middle of stove or fluidized bed pyrolysis reacting furnace.
Increased sharply year by year due to China's city sludge yield, increasingly in short supply, the sludge of city sludge land resource burn
The puzzlement of the problems such as burning journey Zhong bioxin, the technique integrated technology for carrying out deeply dehydrating sludge+sludge composting+pyrolysis can be in height
Effect ground controls secondary pollution simultaneously, and sludge effectively is converted into resource, realizes the efficient disposal and recycling of sludge.
The beneficial effects of the present invention are：
(1) for the problem that the moisture percentage in sewage sludge of urban wastewater treatment firm generation is high, using deeply dehydrating sludge and sludge
Compost carries out technique linking, and the moisture content of sludge is effectively reduced stage by stage, significantly reduces the volume of sludge and follow-up place
Manage the energy consumption of link.
(2) with sludge as raw material, environmental problem and puzzlement that sludge brings to urban development, Er Qieke can not only be solved
To realize " turning waste into wealth ", with good economic worth and social benefit.
(3) integrated technique that the invention is related to, process is simple, energy consumption is low, it is easy to operate, with good application prospect.
In a word, the method can not only effectively realize the treatment disposal difficulties of urban wastewater treatment firm sludge, while can also
Good economic benefit is brought, therefore, the method has quite wide application prospect.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Specific embodiment
The present invention will be described with accompanying drawing with reference to embodiments：
Embodiment 1
The sludge that certain municipal sewage plant produces, moisture content is 99%, and organic part of content is 75%, in regulating reservoir to
PAFS 150kg/t over dry sludge, polyacrylamide 2kg/t over dry sludge are added in sludge；Stirring 30 minutes, then
Sludge after conditioning is pumped into dewaterer carries out deep dehydration, obtains the sludge of moisture content 62%.
Particle diameter is 3-7cm after precrushing, and being delivered to composting units carries out compost treatment, and aeration rate is 0.1-0.3m3/
(min·m3), turn over throwing the frequency be 1~2 times/day, the compost duration be 25d, by obtaining moisture content 32% after composting units
Sludge.
By obtaining the sludge that particle diameter is below 0.5cm after crushing and screening, enter to pyrolyzing sludge stove and be pyrolyzed, be pyrolyzed
During produce combustible gas be back to pyrolysis oven heat supply., at 400~500 DEG C, the reaction time is in 60min for pyrolysis reaction temperature.
To be added to the raw material dosage of pyrolysis oven as basis is calculated, by after pyrolytic reaction, under the conditions of being higher than 300 DEG C in temperature, adopting
Gas solid separation is carried out with cyclone separator, it is 39~41% to obtain sludge-based activated carbon yield；Using the two-part side of cooling step by step
Formula carries out volatile matter fractional condensaion, and the fuel oil crude product yield 15 that recovered temperature is reclaimed in the range of 300 DEG C~120 DEG C~
17%；The sewage yield 35~39% processed the need for being reclaimed using normal temperature water condensation；Sewage by sludge-based activated carbon adsorb-
Sewage treatment plant is back to after Ozonation pretreatment is up to standard to be processed.
Embodiment 2
The sludge that certain municipal sewage plant produces, moisture content is 99%, and organic part of content is 70%, in regulating reservoir to
Bodied ferric sulfate 120kg/t over dry sludge, polyacrylamide 4kg/t over dry sludge are added in sludge；Stirring 30 minutes, then will
Sludge after conditioning pumps into dewaterer and carries out deep dehydration, obtains the sludge of moisture content 60%.
Particle diameter is 3-7cm after precrushing, and being delivered to composting units carries out compost treatment, and aeration rate is 0.1-0.3m3/
(min·m3), turn over throwing the frequency be 1~2 times/day, the compost duration be 25d, by obtaining moisture content 33% after composting units
Sludge.
By obtaining the sludge that particle diameter is below 0.5cm after crushing and screening, enter to pyrolyzing sludge stove and be pyrolyzed, be pyrolyzed
During produce combustible gas be back to pyrolysis oven heat supply., at 500~650 DEG C, the reaction time is in 45min for pyrolysis reaction temperature.
To be added to the raw material dosage of pyrolysis oven as basis is calculated, by after pyrolytic reaction, under the conditions of being higher than 300 DEG C in temperature, adopting
Gas solid separation is carried out with cyclone separator, it is 39~41% to obtain sludge-based activated carbon yield；Using the two-part side of cooling step by step
Formula carries out volatile matter fractional condensaion, and the fuel oil crude product yield 14 that recovered temperature is reclaimed in the range of 300 DEG C~120 DEG C~
16%；The sewage yield 37~41% processed the need for being reclaimed using normal temperature water condensation；Sewage by sludge-based activated carbon adsorb-
Sewage treatment plant is back to after Ozonation pretreatment is up to standard to be processed.
Embodiment 3
The sludge that certain municipal sewage plant produces, its moisture content is 99%, and organic part of content is 70%, in regulating reservoir
To bodied ferric sulfate 100kg/t over dry sludge is added in sludge, polyacrylamide 2kg/t over dry sludge, calcium oxide 100kg/t is exhausted
Dewatered sludge；Stirring 30 minutes, the sludge after conditioning then is pumped into dewaterer carries out deep dehydration, obtains moisture content 60% dirty
Mud.
Particle diameter is 3-7cm after precrushing, and being delivered to composting units carries out compost treatment, and auxiliary material is maize straw, auxiliary material
Ratio is added for 30% over dry sludge.Aeration rate is 0.3-1.0m3/(min·m3), turn over throwing the frequency be 1 times/day, compost continue when
Between be 22d, the sludge by obtaining moisture content 30% after composting units.
By obtaining the sludge that particle diameter is below 0.5cm after crushing and screening, enter to pyrolyzing sludge stove and be pyrolyzed, be pyrolyzed
During produce combustible gas be back to pyrolysis oven heat supply., at 500~650 DEG C, the reaction time is in 45min for pyrolysis reaction temperature.
To be added to the raw material dosage of pyrolysis oven as basis is calculated, by after pyrolytic reaction, under the conditions of being higher than 300 DEG C in temperature, adopting
Gas solid separation is carried out with cyclone separator, it is 40~55% to obtain sludge-based activated carbon yield；Using the two-part side of cooling step by step
Formula carries out volatile matter fractional condensaion, and the fuel oil crude product yield 18 that recovered temperature is reclaimed in the range of 300 DEG C~120 DEG C~
28%；Using normal temperature water condensation reclaim the need for process sewage yield 37~47%, sewage by sludge-based activated carbon adsorb-
Sewage treatment plant is back to after Ozonation pretreatment is up to standard to be processed.
It should be pointed out that for those skilled in the art, before its general principles are not departed from
Put, some improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection domain of this patent.
Claims (4)
1. a kind of urban wastewater treatment firm Treatment of Sludge and resource utilization method, it is characterised in that the method includes following step
Suddenly：
(1) sludge conditioning and deep dehydration：
The sludge of moisture content 95%~99.7% is pumped into sludge conditioning pond, additive is added：The dosage of molysite additive
Be 30kg-150kg/t over dry sludge, or the dosage of aluminium salt additive is 30-120kg/t over dry sludge, or calcium oxide throwing
Dosage is 10kg-500kg/t over dry sludge；Add organic flocculant：Polyacrylamide PAM or derivatives thereof, its dosage is 1
~5kg/t over dry sludge；Stirring 20~60 minutes；Sludge after conditioning is pumped into dewaterer carries out deep dehydration, deep dehydration
After reach moisture percentage in sewage sludge 50%~65%；
(2) sludge composting：
Sludge after deep dehydration is crushed through helicoidal pump and is transported to compost, crushing and screening place, sludge is reached particle diameter 3-
7cm, then carries out sludge composting, and sludge composting, crushing and screening are as far as possible compact on space is arranged, sludge composting workshop and compost
Warehouse is provided with dustproof facilities, and waste height is 1.0~1.5m in composting process；Auxiliary material is added in composting process：Rice husk, straw
One or more in stalk, mushroom residue, wood chip, house refuse, it is 0~200% that auxiliary material adds ratio, and moisture percentage in sewage sludge is adjusted
To 60% or so, C/N than 25~30, and aeration with air blower and carry out turning over throwing, aeration rate is 0.1~1.0m3/(min·
m3)；It is 1~2 times/day to turn over the throwing frequency；The compost duration is 15~30 days；Moisture percentage in sewage sludge is reduced to 20%~35%；
(3) sludge is sieved and broken：
In the composting process through biological agent, turn under the effect such as throwing, sludge particle diameter is gradually reduced, and average grain diameter is left in 2cm~4cm
The right side, after sieving and be broken, below 0.5cm is reduced to by the particle diameter of sludge；
(4) pyrolyzing sludge：
Sludge after will be broken carries out pyrolytic reaction in pyrolysis reactor furnace, and pyrolysis reaction temperature is 400 DEG C~650 DEG C, is stopped
Time is 30min~90min, and the pyrolysis gas produced in pyrolytic process are fully burnt in being back to pyrolysis reactor furnace, is pyrolyzed
During flue dust it is purified after emptying；
(5) thermal decomposition product is separated and metering：
After volatile matter during pyrolyzing sludge is separated out from the surface of solids, under the conditions of being higher than 300 DEG C in temperature, using cyclonic separation
Device carries out gas solid separation, the solid isolated as sludge-based activated carbon；After gas solid separation, using temperature control method step by step stage by stage
Reclaim the fuel oil of the different boiling in volatile matter：Heavy oil of the boiling point higher than 220 DEG C under the conditions of 220 DEG C, will be reclaimed first to produce
Product, then reclaim higher than 120 DEG C of light oil products in the condenser higher than 120 DEG C, so normal temperature water-cooling pattern collect with
Water-phase product based on water.
Product dosage mode in this patent：Under the conditions of being higher than 300 DEG C in temperature, gas solid separation is carried out using cyclone separator,
The yield of sludge-based activated carbon is after the solid metering being collected into after gas solid separation；Using two-part, cooling method is carried out step by step
Volatile matter fractional condensaion, the amount of the liquid product that recovered temperature is reclaimed in the range of 300 DEG C~120 DEG C is pyrolysis oil yield,
And water phase yield is using the liquid product that normal temperature water condensation is reclaimed.
(6) water is mutually pre-processed
Water is mutually pre-processed using absorption-chemical oxidation mode, adsorbent can be using the sludge base produced in technical process
Activated carbon, chemical oxidation can use ozone；By after pretreatment, water outlet enters urban wastewater treatment firm.
(7) packaging is in store for：
By obtaining sludge-based activated carbon, fuel oil crude product after pyrolytic reaction, then product is dried, packed, stored
It is standby；During the whole service of this method, the discharge of the gas of each step all by strict purified treatment, all volatile matters and
The discharge of gas meets discharge standard GB16297.
2. urban wastewater treatment firm Treatment of Sludge according to claim 1 and resource utilization method, it is characterised in that：Institute
The molysite additive stated is PAFS, bodied ferric sulfate, ferrous sulfate, ferric sulfate, any one in the middle of ferric trichloride
Plant or several；Described aluminium salt additive be aluminium polychloride, polyaluminium sulfate and calcium oxide in any one or a few.
3. urban wastewater treatment firm Treatment of Sludge according to claim 1 and resource utilization method, it is characterised in that：Institute
The dewaterer stated is plate and frame filter press, diaphragm filter press, any one in the middle of chamber-type press filter.
4. urban wastewater treatment firm Treatment of Sludge according to claim 1 and resource utilization method, it is characterised in that：Institute
The pyrolysis reactor furnace stated is fixed-bed pyrolysis reacting furnace, two-part pyrolysis reacting furnace, moving bed pyrolysis reacting furnace or fluidisation
One kind in the middle of bed pyrolysis reactor furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611143265.2A CN106746477B (en) | 2016-12-13 | 2016-12-13 | A kind of processing of urban sewage treatment plant sludge and resource utilization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611143265.2A CN106746477B (en) | 2016-12-13 | 2016-12-13 | A kind of processing of urban sewage treatment plant sludge and resource utilization method |
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| Publication Number | Publication Date |
|---|---|
| CN106746477A true CN106746477A (en) | 2017-05-31 |
| CN106746477B CN106746477B (en) | 2019-06-25 |
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| CN108558179A (en) * | 2018-01-04 | 2018-09-21 | 南京万德斯环保科技股份有限公司 | A kind of method for sludge treatment |
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| CN109694161A (en) * | 2019-01-22 | 2019-04-30 | 智造起源科技有限公司 | Sewage, sludge and garbage as resource and energy closure processing system and method |
| CN110229544A (en) * | 2019-06-14 | 2019-09-13 | 重庆鼎立新材料科技有限公司 | The method of natural gas acetylene association carbon black synthesis nanometer carbon black |
| CN110229544B (en) * | 2019-06-14 | 2020-12-15 | 重庆鼎立新材料科技有限公司 | Method for synthesizing nano carbon black by preparing acetylene associated carbon black from natural gas |
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| CN112499905A (en) * | 2020-12-01 | 2021-03-16 | 严惠琴 | Organophosphorus wastewater treatment system |
| CN112499906A (en) * | 2020-12-01 | 2021-03-16 | 严惠琴 | Process for treating wastewater containing parathion pesticide |
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| CN113149734A (en) * | 2021-03-29 | 2021-07-23 | 华电水务科技股份有限公司 | High-reduction low-cost municipal sludge composting treatment method and system |
| CN114287316A (en) * | 2021-12-29 | 2022-04-08 | 中冶南方城市建设工程技术有限公司 | Method for preparing planting soil from river and lake sludge in sponge city system construction |
| CN114890639A (en) * | 2022-03-24 | 2022-08-12 | 济南市市政工程设计研究院（集团）有限责任公司 | Device and process for deeply reducing sludge in sewage plant |
| CN114804956A (en) * | 2022-05-11 | 2022-07-29 | 厦门旺鑫淼资源化利用有限公司 | Method for producing forestry controlled release fertilizer by using sludge of municipal sewage plant |
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