CN201148391Y - Odor control system for sludge anhydration engineering - Google Patents

Odor control system for sludge anhydration engineering Download PDF

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Publication number
CN201148391Y
CN201148391Y CNU2007201925804U CN200720192580U CN201148391Y CN 201148391 Y CN201148391 Y CN 201148391Y CN U2007201925804 U CNU2007201925804 U CN U2007201925804U CN 200720192580 U CN200720192580 U CN 200720192580U CN 201148391 Y CN201148391 Y CN 201148391Y
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China
Prior art keywords
sludge drying
mud
sludge
odor
closed
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Expired - Lifetime
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CNU2007201925804U
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Chinese (zh)
Inventor
翁焕新
苏闽华
陈海燕
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CNU2007201925804U priority Critical patent/CN201148391Y/en
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  • Drying Of Solid Materials (AREA)

Abstract

The utility model discloses an odor control system that is used in a sludge drying project. In the system, a high-energy ion generator is respectively connected with a sludge storage system and a gas mixing chamber through ventilation pipes; the gas mixing chamber is connected with a sludge drying and granulation device, a water-membrane granite dust-removing and air-removing device, and a chimney; the sludge storage system is connected with a biological soil filter bed, and connected with an independent heat source, a temperature regulator, and the sludge drying and granulation device; a sludge drying plant is respectively connected with the sludge storage system and a dried sludge product warehouse through closed conveying belts; and the dried sludge product warehouse and the sludge drying plant are connected with the biological soil filter bed through a ventilation pipe. The odor control system integrates the chemical, physical and biological odor-removing methods, adopts a novel ion odor-removing technology, has high efficiency in eliminating the odor, and has the emergency function. The practice has proved that the technology can be used for reducing the content of the odor to be farther lower than the national emission standards; the surrounding environment and the production side of the sludge drying project have no odor; the sludge is dried; and the odor control system realizes the clean production.

Description

A kind of stench control system of sludge drying engineering
Technical field
The utility model relates to a kind of stench control system of sludge drying engineering.
Background technology
City domestic sewage and trade effluent must be through handling; up to standard could the discharging; this is the important measures of modern environment protection, yet municipal effluent can produce the mud that is equivalent to sewage volume 0.3%~0.5% or sewage quality 1%~2% when being purified processing.According to pertinent data, will reach 440 * 10 respectively to the quantity discharged of 2010 and the year two thousand twenty China municipal effluent 8m 3/ day and 536 * 10 8m 3/ day, along with the fast development of national economy and increasing rapidly of urban population, the quantity of municipal effluent is constantly increasing, meanwhile people are also more and more higher to the requirement of environmental quality, trade effluent and domestic sewage treating rate also will improve constantly, and the amount of sludge that sewage work produces will grow with each passing day.
Sludge of sewage treatment plant is a kind of by organic relic, the bacterium thalline, the extremely complicated heterogeneous body that inorganic particle and colloid etc. are formed, because most pollutents are transferred in the mud in the sewage, it is high and quantity is big that this has a water ratio with regard to the mud that has determined sewage work to produce, and the characteristics of enrichment high density pollution thing, if this municipal sludge can not get appropriate processing, will bring secondary pollution, cause serious threat to ecotope, therefore, the safe disposal of municipal sludge is the difficult problem that the whole world faces jointly, carries out innoxious to mud, minimizing and recycling treatment become the common objective of thoroughly eliminating the municipal sludge secondary pollution both at home and abroad.
For many years, expert and technician are by the practice to various method for sludge treatment both at home and abroad, and the common recognition that draws is that sludge drying at first makes mud reach minimizing, is a necessary process and a crucial ring of finally realizing sewage sludge harmlessness and recycling treatment.Mud from sewage work's generation, pass through mechanical dehydration, water ratio is generally between 75%~85%, pass through drying process, if the water ratio of mud is dropped to below 40%, volume can reduce more than 2/3rds, we have invented the method for utilizing independent thermal source or utilizing smoke residual heat to dry sludge, and set up effective technology and developed the mechanical means that matches with technology, thereby sludge drying can be carried out continuously under lower running cost, can make mud obtain significant decrement, the original calorific value of mud more than 90% preserved, make mud become available resource.
Because contain a large amount of organic pollutants in the mud, under action of microorganisms, mud can produce a large amount of foul smell, the material of foul smell is formed can be divided into 4 classes, and the first kind is a sulfocompound, as hydrogen sulfide, thio-alcohol, thioether class with bite fen class etc.; Second class is a nitrogenous compound, as ammonia, amine, phthalein amine and indoles etc.; The 3rd class is a hydrocarbon compound, as alkane, alkene, alkynes and aromatic hydrocarbon etc.; The 4th class is an oxygen-bearing organic matter, and as alcohol, aldehyde, ketone, phenol and organic acid etc., wherein concentration ratio is higher has ammonia, hydrogen sulfide, thiomethyl alcohol, propylmercaptan, methyl sulphur etc. with the bigger foul smell of influence.In sludge drying engineering, it is the main source of releases of these foul smell that mud stores pretreatment stage, at sludge drying and graining change, and dewatered sludge cooling stages, although because the microorganism in the mud almost has been zero, do not possess the condition that produces new foul smell, still, at this moment original odorous substance can discharge in a large number in the mud.The diffusion meeting havoc quality of air environment of foul smell, directly influence HUMAN HEALTH and working efficiency, both made is that micro-repugnant substance enters environment, the capital does not feel well the people, occur headache, dizzy, feel sick, symptoms such as vomiting, poor appetite and distraction, work under the air ambient of odor pollution being subjected to for a long time, the sickness rate of various inflammation increases, and also influential to respiratory system, the recycle system, Digestive tract and reproductive system.In order thoroughly to eliminate the foul smell that discharges in the sludge drying engineering, the characteristics that we discharge at sludge drying engineering different steps foul smell, in conjunction with concrete process condition, set up the stench control system in the sludge drying engineering, thereby sludge drying can be carried out under the Working environment of cleaner production.
Summary of the invention
The purpose of this utility model provides a kind of stench control system of sludge drying engineering.
The stench control system of sludge drying engineering has the energetic ion producer, the energetic ion producer is connected with the mud hold-up vessel by first ventilator trunk, perhaps the energetic ion producer is connected with closed mud storage vault by second ventilator trunk, the energetic ion producer is connected with mixing chamber by the 3rd vent-pipe road, mixing chamber is connected with granulating apparatus with sludge drying by the 8th ventilator trunk, mixing chamber and moisture film fiber crops stone dedusting degasifying device, the 5th induced draft fan, chimney is connected, mud hold-up vessel or closed mud storage vault constitute the mud stocking system, the mud stocking system is connected with the biological soil filter bed by five-way airduct road through second induced draft fan, perhaps the mud stocking system is connected with independent thermal source by four-way airduct road through first induced draft fan, independent thermal source is connected with granulating apparatus with sludge drying by thermoswitch, fume afterheat is connected with granulating apparatus with sludge drying, sludge drying and granulating apparatus, the first closed conveying belt, the second closed conveying belt constitutes the sludge drying workshop, the sludge drying workshop second closed conveying belt is connected with the mud stocking system, sludge drying workshop the 4th induced draft fan is connected with the biological soil filter bed by the 7th ventilator trunk, sludge drying is connected with the dewatered sludge stockyard through the first closed conveying belt with granulating apparatus, and the dewatered sludge stockyard is connected with the biological soil filter bed by the 6th ventilator trunk through the 3rd induced draft fan.
In the mud hold-up vessel, be provided with first ultraviolet lamp, be provided with second ultraviolet lamp at closed mud storage vault,
The beneficial effect that the utlity model has is: 1) in whole sludge drying engineering, be stored into sludge drying from mud, all carry out under sealing and condition of negative pressure until the dewatered sludge cooling, avoided the excessive of foul smell; 2) integrated chemistry, physics and biologic deodorization method have particularly used the new and high technology of ion deodorization, deodorizing effect is improved greatly, and have characteristics such as floor space is little, Installation and Debugging are simple, running cost is low; 3) this stench control system foul smell clearance height not only, and have emergency function, therefore, stop to produce even in mud drying process, mishap occurs, still do not influence the normal operation of deodoration system.The utility model drops into practice at a plurality of sludge drying engineerings, practice shows, adopt the emission standard of this technology foul smell discharging content well below country, the equal odorless smell in the surrounding enviroment of sludge drying engineering and production scene has been realized the cleaner production of sludge drying.
Description of drawings
Accompanying drawing is the stench control system structural representation of sludge drying engineering;
Among the figure: energetic ion producer 1, mud hold-up vessel 2, closed mud storage vault 3, independent thermal source 4, fume afterheat 5, sludge drying and granulating apparatus 6, dewatered sludge stockyard 7, biological soil filter bed 8, moisture film fiber crops stone dedusting degasifying device 9, chimney 10, first induced draft fan 11, second induced draft fan 12, the 3rd induced draft fan 13, the 4th induced draft fan 14, thermoswitch 15, mixing chamber 16, first ventilator trunk 17, second ventilator trunk 18, the 3rd vent-pipe road 19, four-way airduct road 20, five-way airduct road 21, the 6th ventilator trunk 22, the 7th ventilator trunk 23, the 8th ventilator trunk 24, the 5th induced draft fan 25, first ultraviolet lamp 26, second ultraviolet lamp 27, the first closed conveying belt 28, the second closed conveying belt 29, mud stocking system 30, sludge drying workshop 31.
Embodiment
As shown in drawings, the stench control system of sludge drying engineering, it is characterized in that having energetic ion producer 1, energetic ion producer 1 is connected with mud hold-up vessel 2 by first ventilator trunk 17, perhaps energetic ion producer 1 is connected with closed mud storage vault 3 by second ventilator trunk 18, energetic ion producer 1 is connected with mixing chamber 16 by the 3rd vent-pipe road 19, mixing chamber 16 is connected with granulating apparatus 6 with sludge drying by the 8th ventilator trunk 24, mixing chamber 16 and moisture film fiber crops stone dedusting degasifying device 9, the 5th induced draft fan 25, chimney 10 is connected, mud hold-up vessel 2 or closed mud storage vault 3 constitute mud stocking system 30, in mud hold-up vessel 2, be provided with first ultraviolet lamp 26, be provided with second ultraviolet lamp 27 at closed mud storage vault 3, mud stocking system 30 is connected with biological soil filter bed 8 by five-way airduct road 21 through second induced draft fan 12, perhaps mud stocking system 30 is connected with upright thermal source 4 by four-way airduct road 20 through first induced draft fan 11, independent thermal source 4 is connected with granulating apparatus 6 with sludge drying by thermoswitch 15, fume afterheat 5 is connected with granulating apparatus 6 with sludge drying, sludge drying and granulating apparatus 6, the first closed conveying belt 28, the second closed conveying belt 29 constitutes sludge drying workshop 31, sludge drying workshop 31 is connected with mud stocking system 30 through the second closed conveying belt 29, sludge drying workshop 31 is connected with biological soil filter bed 8 by the 7th ventilator trunk 23 through the 4th induced draft fan 14, sludge drying is connected with dewatered sludge stockyard 7 through the first closed conveying belt 28 with granulating apparatus 6, and dewatered sludge stockyard 7 is connected with biological soil filter bed 8 by the 6th ventilator trunk 22 through the 3rd induced draft fan 13.
The controlled concentration that energetic ion producer 1 produces just, the negative oxygen ion air, send into mud hold-up vessel 2 by first ventilator trunk 17, perhaps send into closed mud storage vault 3 by second ventilator trunk 18, the foul smell molecule that discharges in mud hold-up vessel 2 or the closed mud storage vault 3 with the interaction of ionic air under, final carbonic acid gas and the water of forming, the controlled concentration that energetic ion producer 1 produces just, the negative oxygen ion air is sent into mixing chamber 16 by the 3rd vent-pipe road 19, with mix from sludge drying and granulating apparatus 6 discharge tail gas by the 8th ventilator trunk 24, ionic air on the one hand with tail gas in the foul smell molecule react, thereby reduce the concentration of foul smell molecule, make the charged generation agglomeration effect of molecule in the tail gas on the other hand, thereby reduce the concentration of dust, from sludge drying and granulating apparatus 6 discharge tail gas after mixing chamber 16 and ionic air from energetic ion producer 1 interact, enter moisture film fiber crops stone dedusting degasifying device 9, after further dedusting and process soup wash-out remove foul smell, by the 5th induced draft fan 25, send into chimney 10 complete qualified discharges.
It is important integral part in the sludge drying engineering that mud stores, it also is the important stage that the mud foul smell produces and discharges, in sludge drying engineering, mud hold-up vessel or closed mud storage vault are adopted in the storage of mud usually, the mud stocking system 30 that described mud hold-up vessel 2 or closed mud storage vault 3 constitute in the sludge drying engineering, in mud hold-up vessel 2, be separately installed with first ultraviolet lamp 26, at closed mud storage vault 3 second ultraviolet lamp 27 is installed, ultraviolet lamp plays sterilization functions, the activity because of microorganism in storage process of containment mud continues to produce foul smell, mud stocking system 30 is connected with biological soil filter bed 8, second induced draft fan 12 will be from mud hold-up vessel 2 or closed mud storage vault 3 expellant gas, send into biological soil filter bed 8 by five-way airduct road 21, the remaining foul smell of discharging in the gas is eliminated by microorganism, temporarily quit work if energetic ion producer 1 hinders for some reason, biological soil filter bed 8 can purify whole foul smell that mud stocking system 30 is discharged in the gas.The energy of sludge drying can be from independent thermal source, also can utilize fume afterheat, the heat that independent thermal source 4 produces is by thermoswitch 15, enter sludge drying and granulating apparatus 6 dewatered sludges, fume afterheat 5 directly enters sludge drying and granulating apparatus 6 dewatered sludges, when the energy of sludge drying during from independent thermal source, mud stocking system 30 can be connected with independent thermal source 4, first induced draft fan 11 will be from mud hold-up vessel 2 or closed mud storage vault 3 expellant gas, send into independent thermal source 4 by four-way airduct road 20, the remaining foul smell of discharging in the gas is eliminated by high temperature, temporarily quit work if energetic ion producer 1 hinders for some reason, independent thermal source 4 can be eliminated whole foul smell that mud stocking system 30 is discharged in the gas.
The second closed conveying belt 29 will be sent into sludge drying and granulating apparatus 6 from the mud of the mud stocking system 30 with mud hold-up vessel 2 or closed mud storage vault 3, utilize 5 pairs of mud of independent thermal source 4 or fume afterheat to carry out mummification, has the foul smell that may exist in sludge drying workshop 31 air of sludge drying and granulating apparatus 6, first closed conveying belt 28, the second closed conveying belt 29, send into biological soil filter bed 8 by the 4th induced draft fan 14 by the 7th ventilator trunk 23, eliminate by microorganism.Dewatered sludge particle by sludge drying and granulating apparatus 6, send into dewatered sludge stockyard 7 by the first closed conveying belt 28, the small portion of residual foul smell that the dewatered sludge particle discharges in process of cooling, send into biological soil filter bed 8 by the 3rd induced draft fan 13 by the 6th ventilator trunk 22, eliminate by microorganism.

Claims (2)

1. the stench control system of a sludge drying engineering, it is characterized in that having energetic ion producer (1), energetic ion producer (1) is connected with mud hold-up vessel (2) by first ventilator trunk (17), perhaps be connected with closed mud storage vault (3) by second ventilator trunk (18), energetic ion producer (1) is connected with mixing chamber (16) by the 3rd vent-pipe road (19), mixing chamber (16) is connected with granulating apparatus (6) with sludge drying by the 8th ventilator trunk (24), mixing chamber (16) and moisture film fiber crops stone dedusting degasifying device (9), the 5th induced draft fan (25), chimney (10) is connected, mud hold-up vessel (2) or closed mud storage vault (3) constitute mud stocking system (30), mud stocking system (30) is connected with biological soil filter bed (8) by five-way airduct road (21) through second induced draft fan (12), perhaps mud stocking system (30) is connected with independent thermal source (4) by four-way airduct road (20) through first induced draft fan (11), independent thermal source (4) is connected with granulating apparatus (6) with sludge drying by thermoswitch (15), fume afterheat (5) is connected with granulating apparatus (6) with sludge drying, sludge drying and granulating apparatus (6), the first closed conveying belt (28), the second closed conveying belt (29) constitutes sludge drying workshop (31), sludge drying workshop (31) is connected with mud stocking system (30) through the second closed conveying belt (29), sludge drying workshop (31) is connected with biological soil filter bed (8) by the 7th ventilator trunk (23) through the 4th induced draft fan (14), sludge drying is connected with dewatered sludge stockyard (7) through the first closed conveying belt (28) with granulating apparatus (6), and dewatered sludge stockyard (7) is connected with biological soil filter bed (8) by the 6th ventilator trunk (22) through the 3rd induced draft fan (13).
2. the stench control system of a kind of sludge drying engineering according to claim 1 is characterized in that being provided with first ultraviolet lamp (26) in the described mud hold-up vessel (2), is provided with second ultraviolet lamp (27) in the closed mud storage vault (3).
CNU2007201925804U 2007-11-27 2007-11-27 Odor control system for sludge anhydration engineering Expired - Lifetime CN201148391Y (en)

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CNU2007201925804U CN201148391Y (en) 2007-11-27 2007-11-27 Odor control system for sludge anhydration engineering

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Application Number Priority Date Filing Date Title
CNU2007201925804U CN201148391Y (en) 2007-11-27 2007-11-27 Odor control system for sludge anhydration engineering

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910119A (en) * 2016-06-21 2016-08-31 普利资环境科技(苏州)有限公司 Odor treatment device of sludge drying system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910119A (en) * 2016-06-21 2016-08-31 普利资环境科技(苏州)有限公司 Odor treatment device of sludge drying system

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Effective date of abandoning: 20071127

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