CN105753288B - A kind of dry sludge screening discharge system and outer transportation method - Google Patents
A kind of dry sludge screening discharge system and outer transportation method Download PDFInfo
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- CN105753288B CN105753288B CN201610200960.1A CN201610200960A CN105753288B CN 105753288 B CN105753288 B CN 105753288B CN 201610200960 A CN201610200960 A CN 201610200960A CN 105753288 B CN105753288 B CN 105753288B
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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
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- Hydrology & Water Resources (AREA)
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Abstract
The invention belongs to sludge treatment field, and in particular to a kind of dry sludge screening discharge system and outer transportation method.The dry sludge screening discharge system includes: dry sludge screening grinding system and dry sludge discharge system.Dry sludge screening discharging system automation degree of the present invention is high, and the links integration such as screening, grinding, distribution conveying of dry sludge is completed, and each link working condition can refine regulation, securely and reliably；And main technique link of the present invention all carries out in closed workshop, and mating tail gas treatment device, therefore to surrounding enviroment close friend.
Description
The invention belongs to sludge treatment field, and in particular to a kind of dry sludge screening discharge system and outer transportation method.
Background technique
The construction of wastewater treatment plant of domestic large- and-medium size cities is more early, at the sludge of mature and feasible not yet domestic at that time
Reason technology, so the sludge that sewage treatment plant generates temporarily is deposited on backup land.As time goes by, sludge is not high-volume
It is disconnected to increase, it containing, shoveling heap, filling out in ditch treatment process, the sundries in sludge also increases therewith, building waste, plant rubbish, life
Rubbish living all adulterates wherein, and processing disposition difficulty is big；Meanwhile the property of sludge determines that it can not be dried, and banks up moisture content for a long time
Still very high (through detecting average moisture content 81.48%), is presented marsh shape, part jelly is blocky, low bearing capacity, and difficulty of construction is high.
The long-term of sludge is arbitrarily banked up, and a large amount of soils are occupied, and reduces land resources utilization efficiency；Foul gas is given out,
Influence nearby residents living environment；The stacking of sludge generates percolate and can pollute to soil and groundwater environment simultaneously.It is right
Storage sludge carries out minimizing, innoxious, disposal of resources, is not only to implement Chinese Ministry of Environmental Protection, the rectification of province's environmental protection Room correlation requires
Important measure, and thus bring environmental risk is thoroughly eliminated, optimize the objective requirement of garden integrated environment.
In the prior art, the utility model of Patent No. 201320058014.X discloses a kind of sludge lime stabilization makeup
It sets, is mainly conveyed by dewatered sludge pond, feeding spiral conveyer, mixing device, lime warehouse, curing agent warehouse, metered charge
Machine, rotary drum dryer, prilling granulator, discharging incline conveyer, dust-extraction unit and exhaust gas treating tower composition.The utility model
Beneficial effect is: the chemical heat that hydrolysis is released occurs using the curing agent being added in blending bunker and rapidly heats sludge, has
Imitate energy consumption needed for lower sludge evaporates；Effective eliminating bacteria substance, and without the regenerated risk of bacterium substance；Sludge drying is processed
Increased calcium, iron, aluminium element are received by many plastics products for building in journey, and recycling recycles widely used, make sludge
Innoxious, minimizing and recycling recycle to form benign cycle.
But inventor needs to pick before in practice, it has been found that transporting outward after the drying sludge that processing domestic sewage factory generates
Except unqualified particle therein, and need to arrange a variety of suitable outer transportation methods.Therefore, inventor combines and oneself leads in correlation
The practical experience of domain many years summarizes dry sludge screening discharge system and outer transportation method.
Summary of the invention
Goal of the invention of the invention is to provide dry sludge screening discharge system and outer transportation method.
In order to achieve the above-mentioned object of the invention, the technical solution of the present invention is as follows: a kind of dry sludge sieves discharge system, packet
It includes: dry sludge screening grinding system and dry sludge discharge system；Wherein, the dry sludge screening grinding system includes:
One drag conveyor, a pants type style three-way distributor, two rotary screens, a charging belt machine, a bar type grinder, a spiral transferring
Send machine；One end of the drag conveyor is equipped with material inlet, and the tail end of the drag conveyor is emptying point, and described scrapes
The material inlet of the tail end of plate conveyer and the pants type style three-way distributor is cooperatively connected；The pants type style three-way distributor
A rotary screen is respectively equipped under two material outlets；The charging belt machine is set under the discharge gate of the rotary screen, it is described
The tail end of charging belt machine is emptying point；The bar type grinder is set below the tail end of the charging belt machine；The spiral
The discharge port of the feeding inlet of conveyer and the rotary screen, bar type grinder cooperates；The dry sludge discharge system includes: one
Bucket elevator, an electric three passes material distributing valve, a feed bin and a close type leather belt machine；Also, the pan feeding of the bucket elevator
Mouth is set to below the discharge port of the screw conveyor in above-mentioned dry sludge screening grinding system, and fighter's elevator unloads
The feeding inlet of the electric three passes material distributing valve is set below material mouth, two discharge ports of the electric three passes material distributing valve respectively with institute
State feeding inlet, the cooperation of the feeding inlet of close type leather belt machine of feed bin.
In above-mentioned technical proposal, in the dry sludge discharge system, the bottom of the feed bin is equipped with electro-hydraulic gate valve；It is described
The tail end for closing belt feeder of going on board is equipped with a closing elephant trunk.
The method that dry sludge is transported outward using above-mentioned dry sludge screening discharge system, which is characterized in that including following step
It is rapid:
(1) dry sludge sieves grinding steps: dry sludge being delivered to drag conveyor and is promoted, by sludge and lime
Mixture be delivered to pants type feeding-distribution device, by a kind of rhyme scheme in Chinese operas serving as the prelude to a complete score for voices in regulating device, the mixture of sludge and lime is by one point
Two, it is sieved subsequently into rotary screen, screenings is product, into rotary screen lower scraping plate conveyer；Oversize is conveyed by scraper plate
Machine or belt conveyor are delivered to bar type grinder, through bar type grinder crushing after, into grinder under drag conveyor；
(2) dry sludge transports step: dry sludge is delivered to the feeding inlet of bucket elevator by drag conveyor, so
Dry sludge is delivered to by fighter's elevator the feeding inlet of electric three passes material distributing valve afterwards, then distributes dry sludge to material
Storehouse or/and close type leather belt machine
Above-mentioned dry sludge screening discharge system can also and other systems, such as: sewage sludge feed screening system, sludge add
Medicine drying system matches jointly and is combined into a kind of sludge dewatering drying process system；
The sewage sludge feed screening system includes: a sewage sludge feed bucket, a gate valve, a chain mat machine, a vibrating screen, one scrapes
Plate conveyer；The sewage sludge feed bucket is equipped with discharge port, which is arranged gate valve, and chain is equipped with below the discharge port
Trigger, the discharge port lower section of the chain mat machine are arranged vibrating screen, a drag conveyor are arranged below the discharge port of the vibrating screen；
The sludge dosing drying system includes: a medicament drug delivery device, an agitating device, wherein the medicament administration
Device includes: an at least pharmacy jar and an at least screw conveyor, and the bottom of each pharmacy jar is equipped with discharge port, the discharging
Mouth one feed valve of setting, the feeding inlet of the discharge port lower section setting screw conveyor of the pharmacy jar；The agitating device includes:
Level-one blender, a scrapper conveyor, secondary blender；And the top of the feeding inlet of the level-one blender is arranged the medicament and gives
The discharge port of the discharge port of screw conveyor in medicine device and the drag conveyor in above-mentioned sewage sludge feed screening system, it is described
The feeding port of setting scrapper conveyor below the discharge port of level-one blender, the discharge port lower section setting secondary blender of the scrapper conveyor
Feed inlet；
In above-mentioned technical proposal, in the sewage sludge feed screening system, sewage sludge feed bucket is a steel feed bin, is provided with grid
(5cm × 5cm can guarantee the rapid blanking of sludge to blender and take out the biggish material of particle) topples over for receiving haulage vehicle
The sludge to get off；The gate valve is an electric gate valve；The sewage sludge feed system further include: oversize outward transport belt feeder,
One hopper；The outward transport belt feeder, hopper and electric vibrating sieve cooperate, and the feeding area of drag conveyor is equipped with below hopper.
In above-mentioned technical proposal, in the sludge dosing drying system, above-mentioned medicament drug delivery device is set on platform.Often
The feeding inlet of setting level-one screw conveyor, level-one screw conveyor and deuterostrophies below the discharge port of the bottom of a pharmacy jar
Conveyer cooperation；The blender is twin shaft second level blade forced mixer.
In above-mentioned technical proposal, the sludge dewatering is dried system and is arranged in closed workshop, closed factory roof
For transparent plane skylight, vehicle discharge zone is designed using two storied gate, and workshop designs for tiny structure, is configured with tail gas treatment device；Institute
Stating tail gas treatment device includes: the gas collection pipeline for being laid in workshop headspace, air blower, spray scrubber, low temperature etc.
Plasma gas purification device.Guaranteeing that gas of the sludge in dehydration and drying in workshop will not leak influences surrounding enviroment.
The present invention discloses a kind of sludge dewatering drying methods, comprising the following steps:
(1) sewage sludge feed screening step: the haulage vehicle for loading sludge is opened to steel-structure factory building two storied gate discharge zone,
It is opened in turn by two storied gate, haulage vehicle pours into sludge in sewage sludge feed bucket, and the discharge port of the sewage sludge feed bucket is equipped with
Gate valve, sludge enter after sewage sludge feed bucket, and opening gate valve, sludge can be discharged from sewage sludge feed bucket；The sludge
The discharge port of feed hopper connects the feeding inlet of the vibrating screen by a chain mat machine, and sludge is logical after being discharged from sewage sludge feed bucket
It crosses chain mat machine to be transported in vibrating screen, the impurity particle in sludge is sifted out from sludge, the dirt after vibrating screen screens
Mud enters the discharge port of the vibrating screen；
(2) sludge dosing drying steps: the discharge port of the vibrating screen connects the twin shaft by a drag conveyor and stirs
The receiving hopper for mixing machine, the sludge after vibrating screen screens enter the receiving hopper of a biaxial rneader by drag conveyor；It adjusts
Dry medicament is transferred to screw conveyor, is sent with screw conveyor to twin shaft by the switch for saving the feed valve of medicament pot bottom
The receiving hopper of blender, sludge and lime enter the stirring of twin shaft second level blade forced mixer simultaneously, obtain sludge and lime
Mixture；
(3) sludge paving shines drying steps: the mixture of sludge obtained by step (2) and lime is uniformly spread 20 in workshop ~
The soil conversion zone of 60cm thickness reacting drying 12 ~ 36 hours, is down to 40% dry sludge below to soil moisture content, is then turned
Move to dry sludge screening grinding system；
(4) dry sludge sieves grinding steps: dry sludge obtained by step (3) is delivered to drag conveyor and is promoted, it will
The mixture of sludge and lime is delivered to pants type feeding-distribution device, by a kind of rhyme scheme in Chinese operas serving as the prelude to a complete score for voices in regulating device, the mixing of sludge and lime
Object is divided into two, and is sieved subsequently into rotary screen, screenings is product, into rotary screen lower scraping plate conveyer；Oversize is logical
Cross drag conveyor or belt conveyor be delivered to bar type grinder, through bar type grinder crushing after, into grinder under scrape
Plate conveyer；
(5) dry sludge transports step: dry sludge is delivered to the feeding inlet of bucket elevator by drag conveyor, so
Dry sludge is delivered to by fighter's elevator the feeding inlet of electric three passes material distributing valve afterwards, it is then that dry sludge is as needed
It distributes to feed bin or/and close type leather belt machine.
In above-mentioned technical proposal, the weight ratio of sludge and lime is 10:2 ~ 5, and can according to the moisture content of sludge with
And the degree of needs drying goes the weight ratio of regulation sludge and lime, the time being stirred to react and pilling up time etc..Preferably
In technical solution, for mud mixture forklift in heaps by the thickness control of mud mixture in 20 ~ 60cm, reacting drying 24 is small
When, drying process can ted mud mixture, and the moisture content of mud mixture is finally down to about 40%, after being dried
Mud mixture.
Due to the application of above-mentioned technical proposal, compared to the prior art, the present invention has the following advantages:
1. dry sludge screening discharging system automation degree of the present invention is high, the screening of dry sludge, divides at grinding
It is completed with links integrations such as conveyings, each link working condition can refine regulation, securely and reliably；And main technique of the present invention
Link all carries out in closed workshop, and mating tail gas treatment device, therefore to surrounding enviroment close friend.
2. the present invention, which is suitable for storage sludge, carries out minimizing, innoxious, disposal of resources, be not only to implement Chinese Ministry of Environmental Protection,
The important measure that the rectification of province's environmental protection Room correlation requires, and thoroughly eliminate thus bring environmental risk, Optimizing City integral loop
Border.
Detailed description of the invention
Fig. 1 is sewage sludge feed screening and the drying process schematic diagram of embodiment one；
Fig. 2 is that the drying sludge in embodiment one sieves grinding process schematic diagram；
Fig. 3 is that the drying sludge in embodiment one transports flow diagram；
Fig. 4 is the sewage sludge feed screening system in embodiment one；
Fig. 5 is in embodiment one for stirring the agitating device schematic diagram of sludge and dry medicament；
Fig. 6 is the medicament feeding device schematic diagram in embodiment one；
Fig. 7 is the schematic diagram of the medicament feeding device and agitating device cooperating in embodiment one；
Fig. 8 is the schematic diagram of the drying sludge screening grinding system and dry sludge movement system in embodiment one；
Wherein: 1. feed bins；2. electric gate valve；3. chain mat machine；4. electric vibrating sieves；5. hopper 1；6. level-one Double shaft stirring
Machine；7. oversize transports outward belt feeder；8. drag conveyor 1；9. hopper 2；10. hopper 3；11. second level twin-shaft mixer；12.
Drag conveyor 2；13. pharmacy jar；14. feed valve；15. screw conveyor 1；16. platform；17. screw conveyor 2；18. scraper plate
Conveyer 3；18. charging belt machine；19. drag conveyor 4；20. rotary screen；21. pants type tripper；22. bar type grinder；
23. drag conveyor 5；24. bucket elevator；25. electric material distributing valve；26. feed bin；27. electro-hydraulic gate valve；The skin 28. closing is gone on board
Band machine；29. closing elephant trunk.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment one
As shown in figure 4, one is set on the sewage sludge feed screening system in closed workshop, closed factory roof is transparent adopts
Tabula rasa, vehicle discharge zone are designed using two storied gate, and workshop designs for tiny structure, are configured with tail gas treatment device.Guarantee that sludge exists
Gas when dehydration and drying in workshop will not leak and influence surrounding enviroment.The sewage sludge feed system includes: a sewage sludge feed bucket
1, a gate valve 2, a chain mat machine 3, a vibrating screen 4, a drag conveyor 8；The sewage sludge feed bucket is a steel feed bin, for connecing
It receives haulage vehicle and topples over the sludge to get off；The gate valve is an electric gate valve.The sewage sludge feed system further include: on a sieve
Material outward transport belt feeder 7, a hopper 9；4 cooperation of the outward transport belt feeder 7, hopper 9 and electric vibrating sieve, particle big sludge or rubbish
Rubbish stays in sieve above by vibrating screen 4 and then these oversizes are transferred to outward transport belt feeder 7 and transport, and the suitable sludge of particle is through over vibration
Enter hopper 9 after dynamic sieve, then by the opening and closing of the outlet of control hopper 9, sludge is transferred to the scraper plate cooperated with hopper 9
The feeding port of conveyer 8.Sludge is sent into next stage system, i.e. sludge dry system again by drag conveyor 8.
As shown in Fig. 5, Fig. 6, Fig. 7, one is set on the sludge dosing drying system in closed workshop, comprising: a stirring
Device, a medicament feeding device, wherein the agitating device includes: level-one blender 6, a scrapper conveyor 12, secondary blender
11；The medicament feeding device includes: an at least pharmacy jar 13, and the bottom of each pharmacy jar 13 is equipped with a feed valve 14, at least
One screw conveyor 15,17.Above-mentioned medicament feeding device is set on platform 16 in preferred technical solution.By controlling medicament
Dry medicament is thrown in screw conveyor 15, with 15 He of level-one screw conveyor by the opening and closing of the feed valve 14 of 13 bottom of tank
The cooperation of deuterostrophies conveyer 17 send dry medicament to blender 6.Two kinds of materials (sludge and dry medicament lime) are simultaneously
It is stirred in into blender 6, after under the action of the stirring of level-one blender 6 and then by scrapper conveyor 12 by stirring
Mixtures of materials is delivered to secondary blender 11 and is more fully stirred.The blender 6,12 is the pressure of twin shaft second level blade
Formula blender.In order to preferably ted the sludge for being mixed with lime, promote drying process, the material forklift after stirring is in heaps is in factory
The soil conversion zone of 20-60cm thickness is uniformly spread in room, reacting drying 24 hours, in conjunction with tedding for tractor, soil moisture content dropped
To about 40%, it then is delivered to next system with forklift, i.e., dry sludge sieves grinding system.
As shown in figure 8, a kind of dry sludge sieves grinding system, the dry sludge screening plant includes: that a scraper plate is defeated
Send machine 19, a pants type style three-way distributor 20, two rotary screens 20, a charging belt machine 18, a bar type grinder 22；On described
Expect that the bar type grinder 22 is arranged under the tail end of belt feeder 18.The dry sludge screening grinding system further includes a spiral transferring
Machine 23 is sent, and the discharge port of the feeding inlet of the screw conveyor 23 and the rotary screen 20, bar type grinder 22 cooperates company
It connects.One end of the drag conveyor 19 is equipped with material inlet, and the tail end of the drag conveyor 19 is emptying point, and described
The material inlet of the tail end of drag conveyor 19 and the pants type style three-way distributor 20 is cooperatively connected.The material inlet to
The drying sludge (moisture content is adjustable according to demand, and general moisture content is 40% or less) by being dried is received, is then scraped
Dry sludge is delivered to discharging at the material inlet of pants type tripper along the direction tilted upward by plate conveyer 19.It is described
A rotary screen 20 is respectively equipped under two material outlets of pants type style three-way distributor 21.The pants type style three-way distributor 21
With valve function, the circulation of material can control, it can control the fill process to rotary screen 20.The rotary screen is main
It is made of motor, speed reducer, drum apparatus, rack, sealing cover, feed inlet, discharge port and discharge gate；And the rotary screen 20
Discharge gate under the charging belt machine 18 is set, the tail end of the charging belt machine 18 is emptying point.When material enters roller
After device, due to the inclination and rotation of drum apparatus, so that the material on compass screen surface is overturn and is rolled, make qualified material (undersize)
Discharge port discharge through roller rear end bottom, underproof material (oversize) are discharged through the discharge gate of roller tail portion.
As shown in figure 8, the qualified drying sludge after screened grinding is delivered to next stage system by screw conveyor 23
System, i.e., dry sludge discharge system.
As shown in figure 8, a kind of dry sludge discharge system, comprising: a bucket elevator 24, an electric three passes material distributing valve
25, a feed bin 26 and a close type leather belt machine 28；The electric three passes material distributing valve, which sets 25, a feeding inlet and two discharge ports, and
And the feeding inlet of the electric three passes material distributing valve 25 is set to the emptying point of fighter's elevator 24, the electric three passes sub-material
Two discharge ports of valve 25 are cooperatively connected with the feeding inlet of the feed bin 26, the feeding inlet of close type leather belt machine 28 respectively.It is described
The bottom of feed bin 26 is equipped with electro-hydraulic gate valve 27.The tail end for closing belt feeder of going on board is equipped with a closing elephant trunk 29.
Therefore, present embodiment discloses a kind of sludge dewaterings to be dried system, comprising: sewage sludge feed screening system, dirt
Mud dosing drying system, dry sludge screening grinding system and dry sludge movement system.
As shown in Figure 1, 2, 3, the side of the sludge of system 70% or more moisture content of processing is dried using above-mentioned sludge dewatering
Method the following steps are included:
(1) sewage sludge feed screening step: the haulage vehicle for loading sludge is opened to steel-structure factory building two storied gate discharge zone,
It is opened in turn by two storied gate, haulage vehicle pours into sludge in sewage sludge feed bucket, and the discharge port of the sewage sludge feed bucket is equipped with
Gate valve, sludge enter after sewage sludge feed bucket, and opening gate valve, sludge can be discharged from sewage sludge feed bucket；The sludge
The discharge port of feed hopper connects the feeding inlet of the vibrating screen by a chain mat machine, and sludge is logical after being discharged from sewage sludge feed bucket
It crosses chain mat machine to be transported in vibrating screen, the impurity particle in sludge is sifted out from sludge, the dirt after vibrating screen screens
Mud enters the discharge port of the vibrating screen；
(2) sludge dosing drying steps: the discharge port of the vibrating screen connects the twin shaft by a drag conveyor and stirs
The receiving hopper for mixing machine, the sludge after vibrating screen screens enter the receiving hopper of a biaxial rneader by drag conveyor；It adjusts
Dry medicament is transferred to screw conveyor, is sent with screw conveyor to twin shaft by the switch for saving the feed valve of medicament pot bottom
The receiving hopper of blender, sludge and lime enter the stirring of twin shaft second level blade forced mixer simultaneously, obtain sludge and lime
Mixture；
(3) sludge paving shines drying steps: the mixture of sludge obtained by step (2) and lime is uniformly spread 20 in workshop ~
The soil conversion zone of 60cm thickness reacting drying 12 ~ 36 hours, is down to 40% dry sludge below to soil moisture content, is then turned
Move to dry sludge screening grinding system；
(4) dry sludge sieves grinding steps: dry sludge obtained by step (3) is delivered to drag conveyor and is promoted, it will
The mixture of sludge and lime is delivered to pants type feeding-distribution device, by a kind of rhyme scheme in Chinese operas serving as the prelude to a complete score for voices in regulating device, the mixing of sludge and lime
Object is divided into two, and is sieved subsequently into rotary screen, screenings is product, into rotary screen lower scraping plate conveyer；Oversize is logical
Cross drag conveyor or belt conveyor be delivered to bar type grinder, through bar type grinder crushing after, into grinder under scrape
Plate conveyer；
(5) dry sludge transports step: dry sludge is delivered to the feeding inlet of bucket elevator by drag conveyor, so
Dry sludge is delivered to by fighter's elevator the feeding inlet of electric three passes material distributing valve afterwards, it is then that dry sludge is as needed
It distributes to feed bin or/and close type leather belt machine, a feed bin 26 and a close type leather belt machine 28；The electric three passes material distributing valve sets 25
There are a feeding inlet and two discharge ports, and the feeding inlet of the electric three passes material distributing valve 25 is set to fighter's elevator 24
Emptying point, two discharge ports of the electric three passes material distributing valve 25 respectively with the feeding inlet of the feed bin 26, enclosed belt conveyer
The feeding inlet of machine 28 is cooperatively connected.The bottom of the feed bin 26 is equipped with electro-hydraulic gate valve 27.The tail end for closing belt feeder of going on board
Equipped with a closing elephant trunk 29.
Embodiment two, the sludge dewatering as described in embodiment one are dried system, compared with embodiment one, embodiment two
Also mating tail gas treatment device, guaranteeing that gas of the sludge in dehydration and drying in workshop will not leak influences surrounding enviroment.It is described
Tail gas treatment device includes: gas collection pipeline, blower, spray scrubber, the low-temperature plasma for being laid in workshop headspace
Body gas cleaning plant.
Through detecting, the waste gas components generated in sludge dewatering drying process include: that stench, ammonia, hydrogen sulfide, non-methane are total
Hydrocarbon, water vapour etc..
The gas collection pipeline for being laid in workshop headspace is the main collection conduit composition in four roads, designs branch on main pipeline
The uniform collection of exhaust gas in workshop is realized in pipe, branch pipe tip designs air inlet.The gas collection pipeline and air-introduced machine cooperate
Negative pressure is formed in closed workshop.
Contain dust in exhaust gas, collecting pipe wire length selects mesohigh class FRP Corrosion Protection of Fiber Reinforced Plastics blower, considers that night suitably drops
Low rate of ventilation, blower are equipped with frequency converter.Major parameter is as follows: flow 20357m3/h, total pressure 2590Pa, revolving speed 1270r/
Min, power: 30kw designs 12 meter per second of general pipeline flow velocity, and caliber: 750 × 6mm of Φ, pipeline are all made of PP material.Every road collecting pipe
Design air flow regulating valve.
Inorganization gas enters in spray scrubber after the collection of closed negative pressure through pipeline, uses in spray scrubber
The washing of liquor natrii hypochloritis's circulated sprinkling, liquor natrii hypochloritis have strong oxidizing property, the various stink objects in energy oxygenolysis exhaust gas
Matter, to reduce the odor unit of discharge gas.Exhaust gas after preliminary treatment enters the low temperature plasma gas of two-stage tandem
Body purification device initially enters " low temperature plasma " purification reaction storehouse, in the region due to three mistakes of effect of high energy particle
Journey carries out simultaneously: so that a large amount of water fog particles and aerosol is become positively charged lotus, is attracted under negative plate gravity and flows down
To be discharged after being collected.2. make in ionized state odor molecules be stimulated ionize after molecular scission.3. air simultaneously
In water and oxygen high energy electron bombardment under can also generate the oxidizing species such as OH, active oxygen O, ozone, these strong oxygen
The property changed substance can be reacted with odor molecules, make its decomposition, to promote off-flavor elimination.By low-temperature plasma purified gas
Enter exhaust tube qualified discharge through air-introduced machine.
The spray scrubber is made of tower body, circulating pump, nonchoking nozzle, cyclic water tank etc., carries out integrated apparatus,
Tolerance is handled up to 20000 m3/h, for empty tower gas velocity up to 1.1m/s, spray series is second level, the parameter of circulating pump are as follows: lift H
=28m, flow Q=60m3/h, power G=7.5KW.
Since the gas temperature of this system discharge is room temperature, the requirement for anticorrosion of discharge drum is considered, discharge drum uses PP material
Or glass steel material.Discharge drum diameter 600mm, height of release 15m.
Claims (1)
1. a kind of sludge dewatering is dried system characterized by comprising
Dry sludge screening grinding system, dry sludge discharge system, sewage sludge feed screening system and the dry system of sludge dosing
System；
Wherein, the dry sludge screening grinding system includes: a drag conveyor, a pants type style three-way distributor, two rollings
Shaft screen, a charging belt machine, a bar type grinder, a screw conveyor；One end of the drag conveyor is equipped with material inlet,
The tail end of the drag conveyor is emptying point, and the tail end of the drag conveyor and the pants type style three-way distributor
Material inlet is cooperatively connected；A rotary screen is respectively equipped under two material outlets of the pants type style three-way distributor；It is described
The charging belt machine is set under the discharge gate of rotary screen, and the tail end of the charging belt machine is emptying point；The charging belt
The bar type grinder is set below the tail end of machine；The feeding inlet of the screw conveyor and the rotary screen, bar type grinder
Discharge port cooperation；
The dry sludge discharge system includes: a bucket elevator, an electric three passes material distributing valve, a feed bin and a closed skin
Band machine；Also, the feeding inlet of the bucket elevator is set to the screw conveyor in above-mentioned dry sludge screening grinding system
Discharge port below, the feeding inlet of the electric three passes material distributing valve, the electricity are set below the discharge port of the bucket elevator
Two discharge ports of dynamic T-piece splitting valve cooperate with the feeding inlet of the feed bin, the feeding inlet of close type leather belt machine respectively；
The sewage sludge feed screening system includes: that a sewage sludge feed bucket, a gate valve, a chain mat machine, a vibrating screen, a scraper plate are defeated
Send machine；The sewage sludge feed bucket is equipped with discharge port, which is arranged gate valve, and carrier bar is equipped with below the discharge port
Machine, the discharge port lower section of the chain mat machine are arranged vibrating screen, a drag conveyor are arranged below the discharge port of the vibrating screen；
The sludge dosing drying system includes: a medicament drug delivery device, an agitating device, wherein the medicament drug delivery device
It include: an at least pharmacy jar and an at least screw conveyor, and the bottom of each pharmacy jar is equipped with discharge port, which sets
A feed valve is set, the feeding inlet of setting screw conveyor below the discharge port of the pharmacy jar；The agitating device includes: level-one
Blender, a scrapper conveyor, secondary blender；And the medicament administration dress is arranged in the top of the feeding inlet of the level-one blender
The discharge port of the discharge port for the screw conveyor set and the drag conveyor in above-mentioned sewage sludge feed screening system, the level-one
The feeding port of setting scrapper conveyor below the discharge port of blender, the charging of the discharge port lower section setting secondary blender of the scrapper conveyor
Mouthful, in the dry sludge discharge system, the bottom of the feed bin is equipped with electro-hydraulic gate valve；The tail of the close type leather belt machine
End is equipped with a closing elephant trunk；
The sludge dewatering is dried the sludge dewatering drying method of system, which comprises the following steps:
(1) sewage sludge feed screening step: the haulage vehicle for loading sludge is opened to steel-structure factory building two storied gate discharge zone, warp
It crosses two storied gate to open in turn, haulage vehicle pours into sludge in sewage sludge feed bucket, and the discharge port of the sewage sludge feed bucket, which is equipped with, to be inserted
Plate valve, sludge enter after sewage sludge feed bucket, and opening gate valve, sludge can be discharged from sewage sludge feed bucket；The sludge into
The discharge port of hopper connects the feeding inlet of the vibrating screen by a chain mat machine, and sludge passes through after being discharged from sewage sludge feed bucket
Chain mat machine is transported in vibrating screen, and the impurity particle in sludge is sifted out from sludge, the sludge after vibrating screen screens
Into the discharge port of the vibrating screen；
(2) sludge dosing drying steps: the discharge port of the vibrating screen connects a biaxial rneader by a drag conveyor
Receiving hopper, sludge after vibrating screen screens enters the receiving hopper of a biaxial rneader by drag conveyor；Adjust medicine
Dry medicament is transferred to screw conveyor, is sent with screw conveyor to Double shaft stirring by the switch of the feed valve of agent pot bottom
The receiving hopper of machine, sludge and lime enter the stirring of twin shaft second level blade forced mixer simultaneously, obtain the mixed of sludge and lime
Close object；
(3) sludge paving shines drying steps: the mixture of sludge obtained by step (2) and lime is uniformly spread 20 in workshop ~
The soil conversion zone of 60cm thickness reacting drying 12 ~ 36 hours, is down to 40% dry sludge below to soil moisture content, is then turned
Move to dry sludge screening grinding system；
(4) dry sludge sieves grinding steps: dry sludge obtained by step (3) is delivered to drag conveyor and is promoted, it will
The mixture of sludge and lime is delivered to pants type feeding-distribution device, by a kind of rhyme scheme in Chinese operas serving as the prelude to a complete score for voices in regulating device, the mixing of sludge and lime
Object is divided into two, and is sieved subsequently into rotary screen, screenings is product, into rotary screen lower scraping plate conveyer；Oversize is logical
Cross drag conveyor or belt conveyor be delivered to bar type grinder, through bar type grinder crushing after, into grinder under scrape
Plate conveyer；
(5) dry sludge transports step: dry sludge is delivered to the feeding inlet of bucket elevator by drag conveyor, then
Dry sludge is delivered to the feeding inlet of electric three passes material distributing valve by bucket elevator, then divides dry sludge as needed
It is assigned to feed bin or/and close type leather belt machine.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587127A (en) * | 2004-07-08 | 2005-03-02 | 浙江大学 | Reflux type temperature controllable sludge drying device and method |
| CN204897692U (en) * | 2015-08-12 | 2015-12-23 | 江苏众瑞环保科技有限公司 | Mud degree of depth mummification processing system that modifies |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009220048A (en) * | 2008-03-18 | 2009-10-01 | Taiheiyo Cement Corp | Drying system and drying method for water-containing organic sludge |
| CN105668986B (en) * | 2016-04-01 | 2018-08-24 | 苏州绿地土壤修复科技有限公司 | A kind of drying sludge dehydration system and method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587127A (en) * | 2004-07-08 | 2005-03-02 | 浙江大学 | Reflux type temperature controllable sludge drying device and method |
| CN204897692U (en) * | 2015-08-12 | 2015-12-23 | 江苏众瑞环保科技有限公司 | Mud degree of depth mummification processing system that modifies |
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