CN103130393A - Sludge drying processing method and system - Google Patents

Sludge drying processing method and system Download PDF

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Publication number
CN103130393A
CN103130393A CN2013100895318A CN201310089531A CN103130393A CN 103130393 A CN103130393 A CN 103130393A CN 2013100895318 A CN2013100895318 A CN 2013100895318A CN 201310089531 A CN201310089531 A CN 201310089531A CN 103130393 A CN103130393 A CN 103130393A
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China
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sludge drying
mud
mummification
chamber
sludge
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CN2013100895318A
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Chinese (zh)
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CN103130393B (en
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王兢
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王兢
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The invention discloses a sludge drying processing method and system. The method comprises the following steps of: dividing the sludge into thin layers in a horizontal direction with a sludge coater and paving; putting the sludge divided into thin layers on an interlayer, drying in a sludge drying room with normal-temperature low-speed air, removing dust and odor in the dried air discharged out of the drying room so as to purify the dried air and then conducting environment-friendly discharge, carrying out the heat energy application and of the dried sludge on the dried sludge and making ceramic granules so as to realize comprehensive utilization. The method realizes sludge drying with lower operation cost, a medicine is not added in the drying process, external heat source is not used, no secondary pollution is generated, and the sludge is reduced and recycled harmlessly.

Description

Sludge drying processing method and system
Technical field
The present invention relates to the method and system that a kind of sludge drying is processed, particularly a kind of dewatered sludge method and system take the normal temperature velocity air as the mummification medium.
Background technology
Along with the acceleration of industrialization, urbanization paces, the sewage load of China is increasing, and corresponding sludge creation amount increases sharply." 12 " planning sewage year treatment capacity will reach 500 billion cubic meters, approximately 4,000 ten thousand tons of corresponding mud (water ratio 80%) year generations; To the year two thousand twenty, estimate that China's sludge yield will break through 6,000 ten thousand tons of years.So far, most of mud is not dealt carefully with, the secondary pollution outstanding problem.
The common ﹠ Mud technological line of China has landfill, compost, burning, and mud usually will be through the transportation of longer distance before entering these to process the disposal link.No matter take which kind of technological line, what at first will solve is sludge drying, realizes particularly moisture being reduced to less than 30% after minimizing, is convenient to transport also reduced the pressure that rear road is processed, and also helps thermochemistry disposal technologies such as adopting burning, pyrolysis.
Domestic and international many mechanisms and individual have carried out a large amount of research and development aspect sludge drying, and have made some progress.At present, the sludge drying main technological route has heat drying (steam, hot blast, flue gas), mechanical mummification (press filtration, centrifugal), solar energy desiccation etc.Heat drying speed is fast, effective, adopts the primary energy source such as steam, hot blast, and energy consumption is larger, adopts flue gas to heat energy system, certain influence to be arranged.The machinery mummification need to add medicament usually in mud, medicament can bring the increase of sludge quantity and can process rear road and bring disadvantageous effect, and more disadvantageously mechanical mummification is in the situation that usually can not be reduced to moisture below 50% with medicament.The solar energy desiccation floor space is large, and inefficiency is subjected to weather effect larger, and suitable application region is limited.
Chinese patent 201010221730.6 discloses a kind of sludge air drying method and system, and concrete measure is: in vertical or horizontal tower-shaped housing, utilize sewage work to dry up mud for the Aeration fan of aeration and biological reaction tank oxygen supply.Be used for realizing the another kind of sludge air drying method of the object of the invention, concrete measure is: in hyperbola or similar hyperbola high tower, utilize natural wind to dry up mud.In said vertical or horizontal tower-shaped housing and in hyperbola or similar hyperbola high tower, airheater is set.This invention need to utilize the Aeration fan of sewage work, use to be limited to, and mud is to be deposited in Ta Nei to contact with air and be difficult to less mummification.In hyperbola or similar hyperbola high tower, airheater is set, has used outer thermal source, running cost is higher.
Chinese patent 201110414321.2 discloses a kind of method of residual active sludge Quick-air-drying, comprise in the residual active sludge of collecting and add milk of lime, but residual active sludge is modulated into the slurries of flowable state, being placed in reaction tank spends the night, after water in residual active sludge and entozoa oophyte thereof is fully oozed out, add raising agent residual active sludge is stirred evenly into the distiller's yeast shape, then be tiled in air-drying box (chamber) with thin layer, stir, ventilate, continuous service to the water content of active sludge is down to 30-40%.This patent need to be added medicament to mud, and water ratio can only be reduced to 30-40%.
Chinese patent 200910192763.X discloses a kind of sludge filter cake aerobic air drying method and device, comprises that mainly the sludge filter cake fragmentation is dispersed into the mud granule layer, and malleation is sent into the certain temperature dry air in slow motion or the mud granule layer that stirring; To slow motion or the mud granule that stirring carries out physics or chemical sterilization is processed; Negative pressure is extracted tail gas discharging after washing of having carried sludge water content out outside the mud granule layer; Utilize screw machine that dried mud granule is further pulverized in the process of carrying; Reach the requirement to recycling.This patent need to use cool-heat-exchanger and compressor obtains hot dry air, and raw material is the filter cake through press filtration.
Summary of the invention
The method for sludge treatment and the system that the purpose of this invention is to provide a kind of normal temperature velocity air mummification that can suitability for industrialized production, do not add medicament, effectively realize sludge reduction with less cost, better simply system, mode with comprehensive utilization is given full play to the energy and the resource that mud is contained, and realizes simultaneously the impact of environment minimum.
For achieving the above object, the present invention with normal temperature air as the mummification medium, adopt unique multi-thin-layer to pave mud in conjunction with multidirectional air flow design, mud fully brushes at the indoor air that is subject to of air mummification, effect due to psychrometric difference and pressure difference, the moisture high-efficiency evaporating, the quick mummification of mud.
The method that sludge drying of the present invention is processed comprises:
1), the mud that will wet paves on multi-compartment bed mud plate by the mud coating machine layering in sludge drying treatment system, a paving mud plate minute multilayer in horizontal direction is held on the sludge drying car;
The sludge drying car that 2), paving mud plate will be housed is sent into described sludge drying chamber, adopt blower fan to promote the mummification indoor air flows, realize sludge drying, different in the indoor residence time of air mummification according to the sludge drying car, sludge drying can be arrived water ratio less than 10% at most;
3), the mummification air extracted out from sludge drying chamber is imported into the decontamination chamber, carries out dedusting, deodorizing is processed, the mummification purifying air effluxes after processing and filtering, satisfies the national environmental requirement of being correlated with;
4), the mud (i.e. dried mud) after mummification can directly be used as fuel, be used for boiler, kiln burning or pyrolysis and carry out heat energy utilization; Perhaps through grind, balling-up, sinter haydite in calcining kiln; High-temperature flue gas can be used for the accelerate sludge mummification, realizes resource, comprehensive utilization of energy.
Further, described mummification air cleaning method is selected from one or both the combination in WATER-WASHING METHOD and cyclonic separation method; The method of described deodorizing is selected from one or more the combination in chemical deodorizing method, active carbon adsorption, activation process, adsorption by soil method.
The present invention also proposes the system that a kind of sludge drying is processed, comprise coating machine, sludge drying car, sludge drying chamber and mummification air purifying room, described coating machine is used for mud is paved into after thin layer and minute is placed on described sludge drying car, described sludge drying chamber is normal temperature velocity air mummification chamber, is used for mummification and is placed in mud on described sludge drying car; The purifying treatment that described mummification air purifying room is carried out the dedusting deodorizing for the mummification air that described sludge drying chamber is discharged, and the air after purifying treatment is discharged by pipeline.
Further, described mummification air purifying room comprises water mist dust-removing chamber and chemical deodorizing chamber, the indoor spray equipment that is respectively arranged with of described water mist dust-removing chamber and chemical deodorizing, and described chemical deodorizing chamber further comprises acid solution deodorization chamber * winding paper and alkali lye deodorization chamber * winding paper.
Described mummification air purifying room also comprises the activated carbon adsorption bed that the air after purifying is carried out adsorption treatment.
Described mud coating machine comprises the feed bin that puts mud, inductive switch and with the mud lamellar coated panel that paves.
Described sludge drying chamber comprises the sealing mummification chamber that one or more levels are arranged in juxtaposition or vertical multi-layer is arranged.
Also comprise and place the paving mud plate that is processed into thin layer mud through described mud coating machine, be provided with mesh on described paving mud plate.
Compared with prior art, the present invention has (1) and need not to add medicament, without external heat source, sludge drying is arrived water ratio less than 10%; (2) energy that contains of mud fully keeps, and can further realize recycling; (3) can process wet mud, also can process other wet stocks, particularly drying rate be there is no the wet stock of particular requirement, as wet wood chip, corn cob slag, the dregs of a decoction, manioc waste, bagasse, mud coal, mineral aggregate etc.
Description of drawings
Fig. 1 is the schema of sludge drying processing method of the present invention;
Fig. 2 is the concrete schema of Fig. 1.
Fig. 3 is the structural representation of sludge drying treatment system of the present invention.
Wherein in figure, element numbers is:
Mud coating machine 1; Sludge drying car 2; Normal temperature velocity air mummification chamber 3; Water mist dust-removing chamber 4; Chemical deodorizing chamber 5; Activated-charcoal filter bed 6; Haydite nodulizer 7; Haydite calcining kiln 8; Feed bin 11; Inductive switch 12; Coated panel 13; Paving mud plate 21; Gas blower 31; Gas blower 32; Induced draft fan 33; Water mist sprinkling device 41; Nozzle 42,52,57; Tank 43,53,58; Settling tank 44,54,59; Induced draft fan 45,55,61; Alkali lye spray equipment 51; Acid solution spray equipment 56.
Embodiment
Below in conjunction with accompanying drawing of the present invention, the technical scheme of the embodiment of the present invention is carried out clear, complete description.
Shown in Fig. 1~3, disclosed sludge drying treatment system, it processes by carry out sludge drying take the normal temperature velocity air as the sludge drying of mummification medium is indoor the purpose that reaches sludge drying, comprise mud coating machine 1, paving mud plate 21, sludge drying car 2, sludge drying chamber 3, as the water mist dust-removing chamber 4 that purifies the mummification air purifying room and chemical deodorizing chamber 5, and filtration unit 6.Described coating machine 1 comprises feed bin 11, inductive switch 12, coated panel 13 from top to bottom, and coated panel 13 joins with paving mud plate 21.Described feed bin 11 is used for accommodating mud, and inductive switch 12 is used for controlling when the mud of feed bin 11 reaches preset value, and the coated panel 13 that starts coating machine 1 begins to pave, and paving mud plate 21 is used for mud is paved lamellar to spreading mud plate 21.Coating machine 1 is by up and down or move left and right, and circular-rotation is layed in the mud lamellar that paves on mud plate 21, and the thickness of thin layer mud is take 0.5~5cm as good.
Be provided with the mesh (not shown) on the bottom surface of described paving mud plate 21, mud is separated into the fritter greater than mesh, and the projection that makes progress around the bottom surface is formed with the splash pan (not shown).Paving mud plate 13 directly horizontal positioned to sludge drying car 2, also can be provided with multilayer baffle 22 from top to bottom on sludge drying car 2, the baffle spacing is take 2-20cm as good, but paving mud plate 13 horizontal positioned are to baffle 22, and the periphery of sludge drying car is provided with the vertical baffle (not shown).
Described sludge drying chamber 3 is the normal temperature velocity air mummification chamber of sealing, be used for the mud on accommodating sludge drying car 2 and mummification mummification car 2, the sidewall of sludge drying chamber 3 and top are separately installed with gas blower 31,32, described gas blower can be selected from centrifugal blower, aerofoil fan or roots blower, its wind direction comprises level and downward direction, described sludge drying chamber 3 comprises one or more, but a plurality of mummification chambers level be arranged in juxtaposition, perhaps vertical multi-layer is arranged.Induced draft fan 33 is equipped with in the air outlet of sludge drying chamber 3, described sludge drying car 2 in the mummification chamber 3 interior can the shift position or the transposing direction be beneficial to the drying process of mud.
Described water mist dust-removing chamber 4 joins by the air outlet of pipeline and mummification chamber 3, is used for 3 gases of deriving carry out dust removal process from the mummification chamber.Be provided with water mist sprinkling device (or spray column) 41 in water mist dust-removing chamber 4, spraying nozzle 42 is equipped with on water mist sprinkling device top, and tank 43 and settling tank 44 are arranged at the bottom, and induced draft fan 45 is equipped with in the air outlet.
described chemical deodorizing chamber 5 joins by the air outlet of pipeline and described water mist dust-removing chamber 4, chemical deodorizing chamber 5 comprises alkali lye spray chamber and acid solution spray chamber, in the present embodiment with the alkali lye spray chamber formerly, the acid solution spray chamber is the example explanation rear, alkali lye spray chamber and acid solution spray chamber are respectively equipped with alkali lye spray equipment (or spray column) 51, and acid solution spray equipment 56, nozzle 52 is equipped with on alkali lye spray equipment 51 and acid solution spray equipment top, 57, the bottom is respectively equipped with tank 53, 58 and settling tank 54, 59, 52, the nozzle that alkali lye spray chamber settling tank 54 is connected with the acid solution spray equipment connects by induced draft fan 55 and pipeline, and the settling tank 58 of acid spray chamber is connected with filtration unit 6 by pipeline.
In the present embodiment, described filtration unit 6 is activated-charcoal filter beds, remain in the airborne stink of mummification after purification in order to absorption, the mummification air is disposed in atmosphere via induced draft fan 61 again, thereby has reduced the gas pollution on the environment that mud drying process produces.
In addition, sludge drying treatment system of the present invention also can connect haydite nodulizer 7 and haydite calcining kiln 8, be used for the mud after mummification is further made haydite, and the energy that haydite calcining kiln 8 mainly utilizes mud to contain, insufficient section adopts the biomass renewable energy source.The haydite calcining kiln is arranged near sludge drying chamber, and dewatered sludge is fired into haydite from the mummification chamber nearby after out, to realize resource, comprehensive utilization of energy.
The process that sludge drying of the present invention is processed comprises: mud is shared be paved into thin layer; Drying and other treatment is carried out in the mummification under the air of normal temperature low speed of lamellar mud with paving; And mummification gas is carried out the step of discharging after purifying treatment, specifically comprise:
Wet mud is sent hopper 11 to by the e Foerderanlage (not shown), running up to a certain amount of rear inductive switch 12 opens, coated panel 13 is applied to a certain amount of mud on paving mud plate 21 and mud is divided into fritter, will spread mud plate 21 by artificial or automated installation and deliver on the baffle 22 of sludge drying car 2.Next, the mummification car 2 of placing paving mud plate 21 is admitted to normal temperature velocity air mummification chamber 3, gas blower 31 and top gas blower 32 on the side wall of unlatching mummification chamber, mud is subject to multidirectional air and fully brushes in air mummification chamber 3, due to the effect of psychrometric difference and pressure difference, moisture high-efficiency evaporating, the quick mummification of mud, different in the indoor residence time of air mummification according to the sludge drying car, sludge drying can be arrived water ratio less than 10% at most.
the mummification air is extracted out by closed conduit by induced draft fan 33 and is sent into water mist dust-removing chamber 4, spraying nozzle 42 ejection water smokes on water mist sprinkling device 41 in water mist dust-removing chamber 4, the airborne dust of mummification is drenched the tank 43 that falls into the bottom, and through settling tank 44 precipitations, induced draft fan 45 through the place, air outlet, be connected to chemical deodorizing chamber 5 by pipeline, through the chemical treatment in alkali lye spray chamber and acid spray chamber, the airborne sour gas of mummification and alkaline gas are neutralized in tank 58 and settling tank 59, the mummification air connects the activated-charcoal filter bed 6 residual stinks of absorption by pipeline, at last by induced draft fan 61 discharging atmosphere.
And through mud after drying and other treatment namely dried mud can directly be used as fuel, be used for boiler, kiln burns or heat energy utilization is carried out in pyrolysis; Perhaps through grind, balling-up, sinter haydite in calcining kiln; High-temperature flue gas can be used for the accelerate sludge mummification, realizes resource, comprehensive utilization of energy.
Technology contents of the present invention and technical characterictic have disclosed as above; yet those of ordinary skill in the art still may be based on teaching of the present invention and announcements and are done all replacement and modifications that does not deviate from spirit of the present invention; therefore; protection domain of the present invention should be not limited to the content that embodiment discloses; and should comprise various do not deviate from replacement of the present invention and modifications, and contained by the present patent application claim.

Claims (10)

1. sludge drying processing method is characterized in that comprising the following steps:
With the mud layering lamellar that paves;
To spread lamellar mud and be placed in the indoor normal temperature velocity air drying and other treatment of carrying out of mummification; And
The purifying treatment that the mummification air of discharging from the mummification chamber is carried out the dedusting deodorizing.
2. sludge drying processing method according to claim 1 is characterized in that: described the mud layering lamellar method that paves is comprised:
The mud that will wet paves lamellar to spreading on the mud plate by coating machine, and
To spread the mud plate in horizontal direction a minute multilayer be held on the sludge drying car.
3. sludge drying processing method according to claim 2 is characterized in that: comprise that the described sludge drying car that is shelved with mud is sent into mummification is indoor, adopt the multi-direction promotion mummification of blower fan indoor air flows to realize sludge drying.
4. sludge drying processing method according to claim 1 is characterized in that: described mummification air cleaning method is selected from one or both the combination in WATER-WASHING METHOD and cyclonic separation method; The method of described deodorizing is selected from one or more the combination in chemical deodorizing method, active carbon adsorption, activation process, adsorption by soil method.
5. sludge drying treatment system, it is characterized in that: comprise coating machine, sludge drying car, sludge drying chamber and mummification air purifying room, described coating machine is used for mud is paved into after thin layer and minute is placed on described sludge drying car, described sludge drying chamber is normal temperature velocity air mummification chamber, is used for mummification and is placed in mud on described sludge drying car; The purifying treatment that described mummification air purifying room is carried out the dedusting deodorizing for the mummification air that described sludge drying chamber is discharged, and the air after purifying treatment is discharged by pipeline.
6. sludge drying treatment system according to claim 5, it is characterized in that: described mummification air purifying room comprises water mist dust-removing chamber and chemical deodorizing chamber, the indoor spray equipment that is respectively arranged with of described water mist dust-removing chamber and chemical deodorizing, described chemical deodorizing chamber further comprises acid solution deodorization chamber * winding paper and alkali lye deodorization chamber * winding paper.
7. sludge drying treatment system according to claim 6 is characterized in that: described mummification air purifying room also comprises the activated carbon adsorption bed that the air after purifying is carried out adsorption treatment.
8. sludge drying treatment system according to claim 5, it is characterized in that: described mud coating machine comprises the feed bin that puts mud, inductive switch and with the mud lamellar coated panel that paves.
9. the sludge drying according to claim 5 system that processes, it is characterized in that: described sludge drying chamber comprises the sealing mummification chamber that one or more levels are arranged in juxtaposition or vertical multi-layer is arranged.
10. sludge drying treatment system according to claim 5, is characterized in that: also comprise and place the paving mud plate that is processed into thin layer mud through described mud coating machine, be provided with mesh on described paving mud plate.
CN201310089531.8A 2013-03-20 2013-03-20 Sludge drying processing method and system CN103130393B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103743199A (en) * 2014-01-24 2014-04-23 王兢 Turning based wet stock drying method and turning based wet stock drying system
CN103755122A (en) * 2014-01-24 2014-04-30 王兢 Sludge drying method and system based on vertical sludge distribution
CN103920378A (en) * 2014-05-08 2014-07-16 山东天力干燥股份有限公司 Municipal sludge drying tail gas treatment device and method
CN107445446A (en) * 2017-09-22 2017-12-08 美恩科技股份有限公司 A kind of column plate type dries installation for fermenting
CN107686111A (en) * 2017-08-23 2018-02-13 无锡绿麦环保科技有限公司 Sludge drying carbonization treatment technique
CN110541498A (en) * 2017-12-11 2019-12-06 深圳市金鹏建筑装饰工程有限公司 Interior wall construction method based on constructional engineering

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101205111A (en) * 2007-08-17 2008-06-25 光大环保工程技术(深圳)有限公司 Sludge drying apparatus and sludge drying method using the same
CN101597132A (en) * 2009-06-02 2009-12-09 清华大学 Biological drying method of urban wastewater sludge
CN203144261U (en) * 2013-03-20 2013-08-21 王兢 Sludge drying treatment system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101205111A (en) * 2007-08-17 2008-06-25 光大环保工程技术(深圳)有限公司 Sludge drying apparatus and sludge drying method using the same
CN101597132A (en) * 2009-06-02 2009-12-09 清华大学 Biological drying method of urban wastewater sludge
CN203144261U (en) * 2013-03-20 2013-08-21 王兢 Sludge drying treatment system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103743199A (en) * 2014-01-24 2014-04-23 王兢 Turning based wet stock drying method and turning based wet stock drying system
CN103755122A (en) * 2014-01-24 2014-04-30 王兢 Sludge drying method and system based on vertical sludge distribution
CN103755122B (en) * 2014-01-24 2016-05-25 王兢 A kind of sludge drying method and system based on vertical cloth mud
CN103920378A (en) * 2014-05-08 2014-07-16 山东天力干燥股份有限公司 Municipal sludge drying tail gas treatment device and method
CN103920378B (en) * 2014-05-08 2016-03-09 山东天力干燥股份有限公司 A kind of municipal sludge drying tail gas treating apparatus and method
CN107686111A (en) * 2017-08-23 2018-02-13 无锡绿麦环保科技有限公司 Sludge drying carbonization treatment technique
CN107445446A (en) * 2017-09-22 2017-12-08 美恩科技股份有限公司 A kind of column plate type dries installation for fermenting
CN110541498A (en) * 2017-12-11 2019-12-06 深圳市金鹏建筑装饰工程有限公司 Interior wall construction method based on constructional engineering
CN110541498B (en) * 2017-12-11 2020-12-18 宁波中交水运设计研究有限公司 Interior wall construction method based on constructional engineering

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Effective date of registration: 20200616

Address after: 215000 room 205-211, second floor, office building 5, No. 15, Jinpu Road, Suzhou Industrial Park, Jiangsu Province

Patentee after: Lianzhi Tongda (Suzhou) Environmental Technology Co., Ltd

Address before: 215123 Jiangsu Province, Suzhou City Industrial Park Hanlin edge 25 building 1102 room

Patentee before: Wang Jing