CN203899434U - Treating device for sewage sludge drying tail gas - Google Patents
Treating device for sewage sludge drying tail gas Download PDFInfo
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- CN203899434U CN203899434U CN201320891884.5U CN201320891884U CN203899434U CN 203899434 U CN203899434 U CN 203899434U CN 201320891884 U CN201320891884 U CN 201320891884U CN 203899434 U CN203899434 U CN 203899434U
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- 238000001035 drying Methods 0.000 title claims abstract description 26
- 239000010801 sewage sludge Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 239000000428 dust Substances 0.000 claims abstract description 26
- 238000004062 sedimentation Methods 0.000 claims abstract description 9
- 239000010802 sludge Substances 0.000 abstract description 35
- 239000010865 sewage Substances 0.000 abstract description 29
- 238000002386 leaching Methods 0.000 abstract 4
- 239000007789 gas Substances 0.000 description 75
- 238000000034 method Methods 0.000 description 35
- 238000005406 washing Methods 0.000 description 24
- 238000012545 processing Methods 0.000 description 17
- 239000002689 soil Substances 0.000 description 16
- 238000004140 cleaning Methods 0.000 description 15
- 239000003513 alkali Substances 0.000 description 13
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- 238000004064 recycling Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000003610 charcoal Substances 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000004065 wastewater treatment Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 5
- 239000003500 flue dust Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 4
- 238000010564 aerobic fermentation Methods 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 4
- 230000029087 digestion Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical class [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 230000005180 public health Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
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- 239000006228 supernatant Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical class [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
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- 238000006297 dehydration reaction Methods 0.000 description 1
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- 239000010438 granite Substances 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 230000001717 pathogenic effect Effects 0.000 description 1
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- 231100000614 poison Toxicity 0.000 description 1
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- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
A treating device for sewage sludge drying tail gas comprises a water film dust remover, a cooling tank, a middle tank, a leaching tower and a plasma tower, wherein the water film dust remover is provided with a gas inlet pipeline, a gas outlet pipe, a water inlet pipeline and a water outlet pipeline; the gas outlet pipeline penetrates through the cooling tank to be communicated with the middle tank; the water outlet pipe is connected with a sedimentation tank; the middle tank is arranged in the middle of the cooling tank, the leaching tower is arranged above the middle tank, the middle tank and the leaching tower are in closed connection, and a sludge sucking device is arranged below the middle tank; the leaching tower is provided with a leachate inlet pipeline and a gas discharge pipeline; the gas discharge pipeline is connected with a gas inlet pipeline of the plasma tower. By means of the treating device, the tail gas produced during sludge drying of a municipal sewage treatment plant can be treated comprehensively and thoroughly, and the up-to-standard discharge of the tail gas can be realized.
Description
Technical field
The utility model belongs to the purified treatment field of waste gas, is specifically related to the treating apparatus of the tail gas producing after a kind of sewage/sludge drying.
Background technology
In recent years, under national energy-saving reduction of discharging and pro-active fiscal policy effect, town sewage processing is developed rapidly, and Urban Water environmental improvement obtains remarkable effect.But must see a large amount of mud disposal that is not also generally effectively addressed that town sewage processing procedure produces.These mud are very easy to underground water, soil etc. to cause secondary pollution, become the threat of Environmental security and public health, affect the good effect of national energy-saving reduction of discharging strategy implementation.Therefore, Treatment of Sludge is disposed the important content reducing discharging as China cities and towns, must adopt an effective measure, and implementing of Push Technology and engineering measure, meets the general requirement of China's energy-saving and emission-reduction strategy implementation conscientiously.
Urban wastewater treatment firm mud is the product of sewage disposal, is mainly derived from the process procedure such as primary sedimentation pond, secondary sedimentation tank.Every ten thousand m3 sewage after treatment sludge creation amount (by moisture content 80%) are generally about 5 ~ 10 t, and concrete output depends on the factors such as draining system, influent quality, sewage and sludge treatment technique.Wherein, the moisture content of primary sludge is generally 97% ~ 98%; The moisture content of activated sludge is generally 99.2% ~ 99.8%; Mud is after concentrating, and moisture content is generally 94% ~ 96%; After dehydration, can make moisture content be reduced to 80% left and right.Moisture content refers to the quality of contained humidity in mud and the ratio of sludge quality.
Developed country is through the development of decades, and Treatment of Sludge disposal technology route is relatively ripe, and relevant laws and regulations and standard criterion are fairly perfect.Sludge treatment initial major way in Europe is landfill and soil utilization.Since twentieth century nineties, can be fewer and feweri for the place of landfill, the pressure that Treatment of Sludge is disposed is increasing, European construction large quantities of sludge anhydration burning facilities.Due to sludge anhydration burning investment and operating cost higher, in while mud, harmful components gradually reduce again, and the utilization of mud soil is come into one's own again, become the important selection of sludge treatment scheme.In recent years total trend be soil utilize ratio more and more higher, European Union and most European countries more and more support the soil utilization of mud.At present, the annual mud (dry weight) producing of Germany, Britain and France is respectively 2,200,000 t, 1,200,000 t and 850,000 t, has reached respectively 40%, 60% and 60% as the ratio of agricultural direction soil utilization.Although north America region land resource abundance, sanitary landfills is totally less, the technology path that Treatment of Sludge is disposed be always agricultural be main, and done a large amount of safety evaluatio work for agricultural sludge.At present, in 16000 sewage treatment plants' annual output 7100000 t mud (dry weight) of the U.S., approximately 60% is processed into biosolids through anaerobic digestion or aerobic fermentation, is used as farmland fertilizer.In addition, have 17% landfill, 20% burns, 3% covering recovering for mine.Japanese due to soil restriction, the main technological route that Treatment of Sludge is disposed is that after burning, building materials are utilized as master, and agricultural and landfill is auxiliary.In recent years, Japan starts to adjust original technology path, more focuses on the living beings utilization of mud, gradually reduces the ratio of burning.
To sum up, American-European countries's clearer and more definite major way using soil utilization as sludge treatment and encourage direction at present.Soil utilization mainly comprises three aspects: the one, and agricultural as crops, pasture lawn groom; The 2nd, use as the woods of forest land, afforestation fertilizer; The 3rd, as the soil improvement of sandy bare land, salt-soda soil, abandoned mine improvement matrix.Due to the objective factor such as transportation range, operation easier, agricultural sludge amount is used and soil improvement far above woods again.In addition, America and Europe generally adopts anaerobic digestion and aerobic fermentation technology to carry out stabilisation and harmless treatment to mud.Wherein more than 50% mud has all passed through Anaerobic Digestion.The U.S. has also built the aerobic fermentation of cover more than 700 treatment facility in addition.The anaerobic digestion of mud or aerobic fermentation are the soil utilization of mud, especially agriculturally provide good basis.
Along with improving constantly of China's town sewage handling rate, urban wastewater treatment firm sludge yield also sharply increases.2009,1992 of the urban wastewater treatment firms putting into operation in the whole nation, the amount of disposing of sewage 28,000,000,000 m3, mud approximately 2,005 ten thousand t of generation moisture content 80%.Along with the increase of the level of urbanization and sewage load, sludge quantity will be broken through 3,000 ten thousand t very soon.According to incompletely statistics, current national urban wastewater treatment firm mud only has fraction to carry out sanitary landfills, soil utilization, burning and building materials utilization etc., and major part is not carried out normalized processing disposal.Mud contains the poisonous and harmful substances such as pathogen, heavy metal and persistent organism, without effectively processing and dispose, very easily underground water, soil etc. are caused to secondary pollution, directly threatening environment safety and public health, reduce the environmental benefit of sewage treatment facility greatly.
The technical team that inventor leads from the autumn in 2008 just in Changzhou, Jiangsu Province Zheng Lu sewage treatment plant, invest more than 300 ten thousand yuan, a set of sewage plant sludge charcoal processing has been processed in independent design, the reuse of charcoal calory burning, the fully-automatic equipment of furnace slag brick making lignin-sludge---sludge of sewage treatment plant drying equipment, installation and debugging are produced normal, within 24 hours, constantly move and process 12 tons of mud.
In sludge of sewage treatment plant processing policy, sludge drying treatment technology has been a kind of safe and reliable processing mode by approval, and operating cost is cheap, easy and simple to handle.The Treatment of Sludge thing that utilizes this technology to produce, can be used as cement raw material, brickmaking raw material, foundation engineering filler and refuse landfill overburden soil etc.In the mummification and processing disposal process of mud, former pollutant kind and the form being present in mud changes, and transfers to gas phase from solid phase, thereby formed the waste odour-gas body of a large amount of high temperature, high humidity, stench, high concentration.Main matter in these waste odour-gas bodies is hydrogen sulfide, methyl mercaptan, ethyl mercaptan, toluene, dimethylbenzene, methyl disulfide and ammonia etc., wherein hydrogen sulfide and ammonia etc. are the compositions that is easy to become solution in water, hydrogen sulfide etc. are sour gas, and methyl mercaptan, ethyl mercaptan, toluene, dimethylbenzene and diformazan second-rate etc. be VOC gas, ammonias etc. are alkaline gas.Directly be discharged in atmosphere if these foul gas are not treated, meeting heavily polluted area environment and air quality, cause serious harm to human body and ecological environment.
And the fact is also, the general operation of sludge of sewage treatment plant drying equipment in changzhou about ten days, near chemical plant boss arrives, common people complain chemical plant to produce and produce smell gas, through checking and verify, we do not have, and are originally your Treatment of Sludge, you lose no time to process, otherwise have not produced.So the independent research of inventor team has designed the equipment of a set of water-soluble tail gas, applicant country lives and builds the evaluation of portion's scientific technological advance center, and technical feasibility is domestically leading, after application, will produce good social benefit and environmental benefit, also applied for patent of invention simultaneously, the Chinese invention patent application Publication Specification that can be 201010000238.6 referring to application number: adopt haydite to be stacked among a fixing scope, top water filling or shower water, below draining, form cooling turriform utensil, utilize time and speed and water-soluble appearance principle, by house refuse or city sludge drying and other treatment, charing processing, the tail gas producing in burning disposal production process is introduced exhaust decentralized system in utensil through water washing emission gases (foul smell), gas ejection nature is distributed in utensil, in utensil, gas is fled with porosity, contact molten appearance is condensed under water heavy outflow and returns to sewage treatment plant again with water.
June in the same year, inventor team bears Suzhou High-Tech Zone 100t/d sewage plant sludge and processes engineering, and build the same year, declares simultaneously, National Development and Reform Commission's Treatment of Sludge demonstration projects, reply in 2010,1,100 ten thousand yuan of subsidy funds, engineering was put into serial production in December, 2011, operation continuously, so far more than 40,000 ton of lignin-sludge, equipment is stable, in problem or vent gas treatment.Chimney height 25m at that time, according to national standard, odor concentration reaches≤6000 o'clock, we at that time detected value be 2300, meet standard, engineering should be checked and accepted, but local Environmental Protection Agency disapproves, reason is that common people complain, tail gas is unpleasant, requires rectification.Therefore, inventor and technical team thereof need to research and develop a kind of equipment and the method that can administer the tail gas producing in urban wastewater treatment firm mud drying process.
Summary of the invention
Goal of the invention of the present utility model is to provide a kind of device of sewage sludge drying tail gas; to guarantee to administer up hill and dale the tail gas producing in urban wastewater treatment firm mud drying process comprehensively; realize the qualified discharge of tail gas, and eliminate the impact near resident, guarantee Environmental security and public health.
To achieve the above object of the invention, the technical solution adopted in the utility model is: a kind for the treatment of apparatus of sewage sludge drying tail gas, comprising: a water dust scrubber, a cooling bay, an intermediate pool, an eluting column, a plasma tower;
Wherein, described water dust scrubber is provided with admission line and outlet pipe, inlet channel and outlet conduit; A part for described outlet pipe is arranged in cooling bay, and through the sensible intermediate pool of cooling bay; Described outlet conduit connects a sedimentation basin;
Described intermediate pool is arranged in the middle of described cooling bay, and is provided with eluting column above described intermediate pool, airtight connection between intermediate pool and eluting column, and described intermediate pool below is provided with mud aspirator;
Described eluting column is provided with leacheate input duct, discharge duct; Described discharge duct is connected with the admission line of plasma tower.
Utilize the method for above-mentioned treating apparatus sewage sludge drying tail gas, comprise water washing dedust cooling, alkaline cleaning procedure:
Wherein said water washing dedust cooling step comprises: sewage sludge drying tail gas is delivered to a water dust scrubber and carries out clear water drip washing, by the method for water film dedusting, remove flue dust in tail gas and composition soluble in water, reduce the temperature of tail gas simultaneously;
Described alkali cleaning step comprises: the tail gas after water washing dedust is delivered to and in eluting column, carries out drip washing and react with alkaline drip washing medicament, and alkaline leacheate absorbs the sour gas in tail gas gas, and further reduces the temperature of tail gas;
The processing method of described sewage sludge drying tail gas also comprises: by the tail gas after water washing dedust by a pipeline being arranged in cooling bay, to further reduce the temperature of tail gas; Then the tail gas after this cooling is delivered to and is arranged at the middle intermediate pool atomization of cooling bay, the tail gas after atomization rises and enters the eluting column being arranged on intermediate pool, carries out alkali cleaning;
The processing method of described sewage sludge drying tail gas also comprises: carry out cutting process by being delivered to plasma tower through the tail gas of alkali cleaning, tail gas gas is cut into micron, nano level particulate removal, finally realize deodorizing and the smokeless emission of sewage sludge drying tail gas.
In technique scheme, the water film dedusting method adopting in described water-washing step is that a kind of effect that relies on powerful centrifugal force gets rid of the heavy grain in flue dust to moisture film wall, and the water under being continued to flow by sidewall washes away, thereby removes the method for grit.
In technique scheme, the water dust scrubber adopting in described water-washing step can be selected but be not limited to shale water dust scrubber, Water film dust remover of granite, gallet water curtain dust collector.That water dust scrubber has is simple in structure, acidproof, wear-resisting, resistance is little, dust removal efficiency is high, the advantage such as stable and easy to maintenance.It has be not with Venturi and with two kinds of patterns of Venturi.Water dust scrubber belongs to mechanical centrifugal rotating vane type dust arrester, has the moisture film that one deck is evenly distributed to flow from top to bottom at the cylinder inner wall of hollow, and ash-laden gas is introduced in cylinder from the volute air-inlet device of cylinder bottom, and then spiral, is discharged by cylinder top.At whole flow process towel, grit is subject to the effect of centrifugal force and to barrel, is sticked and take bottom of cylinder to discharge through envelope by moisture film, reaches the object of flue gas ash removal.When the work of Venturi tube-type spreader water dust scrubber, flue gas, entering before drop catcher, first by Venturi tube, accelerates gradually in collapsible tube, arrives throat's place's flue gas flow rate the highest; Flue gas is strong turbulent motion, the press water that sprays people before trunnion is the vaporific whole throat that is covered with, the moving grit of flue gas high speed breaks through globule air film around and is attracted on the globule, and the grey water droplet (claiming collision cohesion) of coacervating large particle enters drop catcher with flue gas and separates.
In technique scheme, described water-washing step is not only removed flue dust in tail gas and composition soluble in water, reduces the temperature of tail gas, and the exhaust temperature of 120 DEG C of left and right is reduced to 70 DEG C of left and right, ready for further processing tail gas.
In technique scheme, described water-washing step also comprises the step of recycling the sewage that water dust scrubber sewage sludge drying tail gas produces: sewage is introduced to sedimentation basin and precipitate, upper strata clear water after precipitation carries out recycle and reuse, lower floor's mud is used for charcoal processing, the heat energy recycle that burning charcoal produces, the slag of generation carries out brickmaking processing.
In technique scheme, the alkaline spray liquid adopting in described alkali cleaning step is selected from but is not limited to: saturated calcium hydroxide aqueous solution, limewash, saturated aqueous sodium carbonate or saturated sodium bicarbonate aqueous solution.
In technique scheme, described alkali cleaning step also comprises the step of recycling eluting column and process the sewage that produces of tail gas: sewage enters intermediate pool and precipitates, the recycle and reuse after cooling bay is cooling of supernatant liquor after precipitated and separated, lower floor's mud is delivered to Treatment of Sludge factory recycling.
In technique scheme, the exhaust temperature after described alkali cleaning step is down to 40～50 DEG C.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1. the water dust scrubber that the utility model adopts can farthest be removed dust in tail gas and water-soluble impurity composition; And can be by the temperature of tail gas the 70 DEG C of left and right that are low to moderate by 120 DEG C of left and right, ready for further processing tail gas.
2. the utility model has intermediate pool at eluting column, the outer sheathed cooling bay of intermediate pool, and the further cooling tail gas that enters eluting column on the one hand, is conducive to reacting of alkaline leacheate and tail gas; Make on the other hand precipitation and the recycling of leacheate become very convenient.
3. in the whole process of the utility model, pay much attention to waste liquid, the recycling of solid that processing procedure produces, comprise the recycling of waste water that water-washing process produces, waste water that alkaline cleaning procedure produces.
Brief description of the drawings
Accompanying drawing 1 is the equipment schematic diagram of embodiment.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment mono-:
Referring to Fig. 1, a kind for the treatment of apparatus of sewage sludge drying tail gas, its building process comprises the following steps:
(1) establishment of washing part: adopt shale to do single tower or double tower water dust scrubber, then the water inlet pipe of a conduit pipe as water dust scrubber be set, introduce river or tap water supply film gas wash tower and use; The outlet conduit of one anticorrosion pipeline as washings is set, dredges washings and enter a sedimentation basin and carry out precipitation process; The admission line of one flue as water dust scrubber is set, the outlet pipe of a flue as tail gas is set, this flue is through cooling bay sensible intermediate pool;
(2) establishment of alkali cleaning part: build concrete jacket pond, great Chi overlaps little Chi, described great Chi is as cooling bay, and described little Chi, as intermediate pool, arranges pond in intermediate pool, then intermediate pool lower cone storage tank is installed, storage tank mouth valve is installed, is connected valve installation muddy water pump, pumping equipment is at regular time and quantity installed, build muddy water pipeline and enter Sewage Plant cesspool, connect storage tank water treatment;
Multilayer stereoscopic spray column is set, and turriform is rectangle, and tower body adopts anti-corrosion material, and tower top arranges the end aerofoil of fending off, and layer stereo anticorrosion heatproof net is installed, and spray head is installed, and connects feed pipe;
Outer pond also can dissolve alkalize spray liquid by adding medicine as cooling bay time, and constantly supplements the validity that clear water and medicament keep medicament; Wherein said alkaline spray liquid is saturated limewater;
(3) establishment of plasma apparatus: the admission line of plasma apparatus is connected with the outlet pipe of spray column; Then one chimney is set and is connected with the outlet pipe of plasma apparatus, and in chimney installation and measuring mouth.
Embodiment bis-:
As shown in Figure 1, a kind of processing method of sewage sludge drying tail gas and device thereof, comprising: a water dust scrubber, a cooling bay, an intermediate pool, an eluting column, a plasma tower; Wherein, described water dust scrubber is provided with admission line and outlet pipe, inlet channel and outlet conduit; A part for described outlet pipe is arranged in cooling bay, and through the sensible intermediate pool of cooling bay; Described outlet conduit connects a sedimentation basin; Described intermediate pool is arranged in the middle of described cooling bay, and is provided with eluting column above described intermediate pool, airtight connection between intermediate pool and eluting column, and described intermediate pool below is provided with mud aspirator; Described eluting column is provided with leacheate input duct, discharge duct; Described discharge duct is connected with the admission line of plasma tower.
Wherein, pond is once set in described intermediate pool, the Xia Chichu of intermediate pool is provided with a cone storage barrel, and the outlet of this storage barrel is provided with a valve, and the pipeline of valve downstream is provided with a muddy water suction pump, can aspirate at regular time and quantity muddy water and be delivered to Sewage Plant cesspool.
Embodiment tri-:
The method that adopts the device sewage sludge drying tail gas of above-described embodiment, comprising:
Water washing dedust cooling step: sewage sludge drying tail gas is delivered to a water dust scrubber and carries out clear water drip washing, by the method for water film dedusting, remove flue dust in tail gas and composition soluble in water, reduce the temperature of tail gas simultaneously;
By the tail gas after water washing dedust by a pipeline being arranged in cooling bay, to further reduce the temperature of tail gas; Then the tail gas after this cooling is delivered to and is arranged at the middle intermediate pool atomization of cooling bay, the tail gas after atomization rises and enters the eluting column being arranged on intermediate pool, carries out alkali cleaning;
Alkali cleaning step comprises: the tail gas after water washing dedust is delivered to and in eluting column, carries out drip washing and react with alkaline drip washing medicament, and alkaline leacheate absorbs the sour gas in tail gas gas, and further reduces the temperature of tail gas;
Carry out cutting process by being delivered to plasma tower through the tail gas of alkali cleaning, tail gas gas is cut into micron, nano level particulate removal, finally realize deodorizing and the smokeless emission of sewage sludge drying tail gas.
In technique scheme, described water-washing step is not only removed flue dust in tail gas and composition soluble in water, reduces the temperature of tail gas, and the exhaust temperature of 120 DEG C of left and right is reduced to 70 DEG C of left and right, ready for further processing tail gas.
In technique scheme, described water-washing step also comprises the step of recycling the sewage that water dust scrubber sewage sludge drying tail gas produces: sewage is introduced to sedimentation basin and precipitate, upper strata clear water after precipitation carries out recycle and reuse, lower floor's mud is used for charcoal processing, the heat energy recycle that burning charcoal produces, the slag of generation carries out brickmaking processing.
In technique scheme, the alkaline spray liquid adopting in described alkali cleaning step is saturated limewater.
In technique scheme, described alkali cleaning step also comprises the step of recycling eluting column and process the sewage that produces of tail gas: sewage enters intermediate pool and precipitates, the recycle and reuse after cooling bay is cooling of supernatant liquor after precipitated and separated, lower floor's mud is delivered to Treatment of Sludge factory recycling.
In technique scheme, the exhaust temperature after described alkali cleaning step is down to 40～50 DEG C.
Claims (1)
1. a treating apparatus for sewage sludge drying tail gas, is characterized in that, comprising: a water dust scrubber, a cooling bay, an intermediate pool, an eluting column, a plasma tower; Wherein, described water dust scrubber is provided with admission line and outlet pipe, inlet channel and outlet conduit; A part for described outlet pipe is arranged in cooling bay, and through the sensible intermediate pool of cooling bay; Described outlet conduit connects a sedimentation basin; Described intermediate pool is arranged in the middle of described cooling bay, and is provided with eluting column above described intermediate pool, airtight connection between intermediate pool and eluting column, and described intermediate pool below is provided with mud aspirator; Described eluting column is provided with leacheate input duct, discharge duct; Described discharge duct is connected with the admission line of plasma tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891884.5U CN203899434U (en) | 2013-12-31 | 2013-12-31 | Treating device for sewage sludge drying tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891884.5U CN203899434U (en) | 2013-12-31 | 2013-12-31 | Treating device for sewage sludge drying tail gas |
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| CN203899434U true CN203899434U (en) | 2014-10-29 |
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| CN201320891884.5U Expired - Lifetime CN203899434U (en) | 2013-12-31 | 2013-12-31 | Treating device for sewage sludge drying tail gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768920A (en) * | 2013-12-31 | 2014-05-07 | 苏州泥宝环境科技有限公司 | Treatment method for tail gas generated by sewage and sludge drying and treatment device thereof |
| CN105570904A (en) * | 2015-12-11 | 2016-05-11 | 凯天环保科技股份有限公司 | Household garbage incineration treatment system and treatment method thereof |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768920A (en) * | 2013-12-31 | 2014-05-07 | 苏州泥宝环境科技有限公司 | Treatment method for tail gas generated by sewage and sludge drying and treatment device thereof |
| CN105570904A (en) * | 2015-12-11 | 2016-05-11 | 凯天环保科技股份有限公司 | Household garbage incineration treatment system and treatment method thereof |
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