CN106430898A - Sludge drying system and method - Google Patents
Sludge drying system and method Download PDFInfo
- Publication number
- CN106430898A CN106430898A CN201610935227.4A CN201610935227A CN106430898A CN 106430898 A CN106430898 A CN 106430898A CN 201610935227 A CN201610935227 A CN 201610935227A CN 106430898 A CN106430898 A CN 106430898A
- Authority
- CN
- China
- Prior art keywords
- sludge
- scraper plate
- mud
- heating agent
- sludge drying
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a sludge drying system and method. The system comprises a dewaterer, a scraper film dryer, an auger delivery cooler and a mixing condenser, wherein the dewaterer communicates with the scraper film dryer through a transfer pump; the discharge port of the scraper film dryer communicates with the feed port of the auger delivery cooler; the bottom of the discharge port of the auger delivery cooler is provided with a dry sludge output device; and a hot steam outlet of the scraper film dryer communicates with the mixing condenser. The method comprises the following steps: dewatering the raw material sludge by using the dewaterer; drying the sludge by using the scraper film dryer; sending the dried sludge into the auger delivery cooler, cooling and outputting; and delivering the hot steam generated by drying into the mixing condenser, and carrying out cooling, dedusting and deodorization. The system and method implement drying treatment on water-containing sludge, lowers the sludge treatment cost and energy consumption, is compact in structure, and can be widely used for sludge drying for industrial sewage treatment plants.
Description
Technical field
The invention belongs to the technical field of Treatment of Sludge, more particularly to a kind of sludge drying system and method.
Background technology
By 2013, wastewater treatment in China factory had 3500, and sewage treatment capacity reaches 1.45 billion cubic meters/day, year
Produce ten thousand tons of mud 3000-3500 (moisture content about 80%), sewage disposal scale is already close to the U.S..
For recycling angle, consider to process the technology disposed from the property of mud and feature, in mud
More than 60% is all protein, additionally contains organic matter.In sludge handling process, international current standard is " four
Change ", i.e. stabilisation, minimizing, innoxious, resource, and the sewage sludge that the current present situation of China is 80%～90% is
Simple thickening, the sludge moisture content after dehydration is still very high, using traditional burning mode, mud is burned, power consumption
Huge.
Content of the invention
The technical problem to be solved is to provide a kind of sludge drying system and method, realizes to water-containing sludge
Drying and other treatment, reduces cost and the energy consumption of Treatment of Sludge.
The technical solution adopted for the present invention to solve the technical problems is to provide a kind of sludge drying system, including dehydration
Machine, scraper plate film drier, helical feed cooler and mixing condenser, described scraper plate film drier includes rotating shaft, drying
Chamber, scraper plate and heat medium cavity, described drying chamber respectively with charging aperture, discharging opening and vapours outlet, described scraper plate is arranged at
In rotating shaft and along drying chamber wall rotate, described heat medium cavity is connected with heating agent input pipe and heating agent efferent duct respectively, described
The mud mouth of dewaterer is connected with the charging aperture of scraper plate film drier by delivery pump, the discharging of described scraper plate film drier
Mouth is connected with the charging aperture of helical feed cooler, and the discharging opening bottom of described helical feed cooler is provided with the output of dewatered sludge
Device, the vapours outlet of described scraper plate film drier is connected with mixing condenser, and the bottom of described mixing condenser is provided with
Condensate drain, top are provided with exhaust emission tube.
As one kind of the present invention preferred embodiment, this system is combined with sludge incinerator, described scraper plate film drying
The discharging opening of device be provided with another branch to sludge incinerator convey mud, described sludge incinerator heating agent is heated and with heat
The heating agent input pipe connection in matchmaker chamber.
As another preferred embodiment of the present invention, described dewaterer is centrifuge or belt filter press.
As another preferred embodiment of the present invention, described scraper plate is uniformly arranged as some along the circumference of rotating shaft
Scraper plate in row, each row is along the length direction uniform intervals of rotating shaft.
As another preferred embodiment of the present invention, described delivery pump adopts screw pump.
As another preferred embodiment of the present invention, described output device is transmitted using conveyer belt, output dress
The end put is provided with the container collecting dewatered sludge.
As another preferred embodiment of the present invention, the row of being sequentially provided with the exhaust emission tube of described mixing condenser
Blower fan and segregator, the liquid outlet of described segregator is connected with the condensate drain of mixing condenser.
Another technical scheme that the present invention solves that its technical problem adopted be provide a kind of using above-mentioned sludge drying
The sludge drying method of system, comprises the following steps：
(1) raw sludge is dehydrated using dewaterer；
(2) mud after being dehydrated is delivered in the drying chamber of scraper plate film drier by delivery pump, logical in heat medium cavity
Enter heating agent mud is dried；
(3) dried mud enters helical feed cooler, carries out cooling down by refrigerant and obtains dewatered sludge；
(4) dewatered sludge after cooling down is exported by output device and is collected；
(5) vapours that step produces be delivered in mixing condenser carry out cooling down, dedusting and taste removal, tail gas enters unification
Process.
As one kind of the present invention preferred embodiment, described heating agent adopts steam or conduction oil, and described refrigerant adopts
Recirculated cooling water.
As another preferred embodiment of the present invention, described heating agent is heated using sludge incinerator, described dirt
The sludge fuel of mud incinerator adopts the partial desiccation mud in scraper plate film drier, the dry matter content of described partial desiccation mud
For 40%～60%.
Beneficial effect
In the present invention, first pass through dewaterer and raw sludge is carried out with partially dehydrated, increase sludge content, then adopt scraper plate
Film drier is dried to mud, and due to the effect of scraper plate, easily in incoming mud, meanwhile, mud is difficult adding heat
Dry and hard on hot face, the dry matter content of the cooled dewatered sludge obtaining reaches more than 90%, and moisture substantially reduces, and sludge volume is big
Big reduce, saved follow-up processing cost, it is to avoid the huge energy that the direct burning of conventional process higher moisture mud needs
Consumption.Furthermore it is possible to setting sludge incinerator, and the semiarid hot mud in scraper plate film drier is adopted to be should as fuel
Being dried of system provides thermal source, without the input of outside resources, is conducive to further reducing energy consumption.The present invention adopts contact drying
Mode achieve the mummification of water-containing sludge, flow process is simply compact.
Brief description
Fig. 1 is the structural representation of present system.
Fig. 2 is the section structure schematic diagram of scraper plate film drier of the present invention.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than restriction the scope of the present invention.In addition, it is to be understood that after having read the content of present invention instruction, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
A kind of sludge drying system as shown in Figure 1, including dewaterer 1, scraper plate film drier 2, helical feed cooling
Device 3 and mixing condenser 4.
As shown in Fig. 2 scraper plate film drier 2 includes rotating shaft 201, drying chamber 202, scraper plate 203 and heat medium cavity 204.Dry
Dry chamber 202 respectively with charging aperture, discharging opening and vapours outlet.Scraper plate 203 is arranged in rotating shaft 201 and along drying chamber
202 wall rotates, scraper plate 203 along rotating shaft 201 circumference be evenly arranged with multiple rows of, each arrange in scraper plate 203 along rotating shaft 201
Length direction uniform intervals.Heat medium cavity 204 is connected with heating agent input pipe and heating agent efferent duct respectively.
Dewaterer 1 adopts centrifuge or belt filter press, and the mud mouth of dewaterer 1 passes through delivery pump 5 and scraper plate film
The charging aperture connection of drier 2, delivery pump 5 adopts screw pump, the discharging opening of scraper plate film drier 2 and helical feed cooler
3 charging aperture connection.The discharging opening bottom of helical feed cooler 3 is provided with the output device 6 of dewatered sludge, and output device 6 adopts
Conveyer belt is transmitted, and the end of output device 6 is provided with the container 7 collecting dewatered sludge.
The vapours outlet of scraper plate film drier 2 is connected with mixing condenser 4, and the bottom of mixing condenser 4 is provided with cold
Drip pipe, top is provided with exhaust emission tube, exhaust emission tube is sequentially provided with exhaust blower and segregator 8, segregator 8 can
Condensate liquid in tail gas is once separated again, the liquid outlet of segregator 8 is connected with the condensate drain of mixing condenser 4
Logical.
This system is combined with sludge incinerator, and the discharging opening of scraper plate film drier 2 is provided with another branch, by this branch
Can be burned as fuel to the partial desiccation mud of sludge incinerator conveying heat, heating agent be carried out add using sludge incinerator
Heat simultaneously heating agent is delivered in scraper plate film drier 2 mud is dried.
A kind of specific embodiment that using this sludge drying system carry out sludge drying is provided below, comprises the following steps：
(1) raw sludge that sludge content is 5.5% is dehydrated using belt filter press, the sludge content obtaining is
20%.
(2) mud after being dehydrated is delivered in the drying chamber 202 of scraper plate film drier 2 by screw pump, to heat medium cavity
It is passed through vapours in 204 mud is dried.Because the viscosity of mud is big, it is difficult drying, by using scraper plate film drying
Device 2, due to the effect of scraper plate 203, heat is easily in incoming mud, meanwhile, mud be difficult dry and hard on heating wall, in addition,
Scraper plate 203 plays conveying progradation simultaneously again.While being dried, the mud that dry matter content is 50% is delivered to
Burned in sludge incinerator and produced vapours, without the input of outside resources, advantageously reduced energy consumption.
(3) the mud temperature leaving scraper plate film drier 2 reaches 95 DEG C, enters helical feed cooler 3, logical in chuck
Enter recirculated cooling water mud carried out with cooling down to obtain dewatered sludge, the dry matter content of dewatered sludge reaches more than 90%.
(4) dewatered sludge after cooling down is exported by output device 6 and carries out collecting packing.
(5) in the vapours that step (2) produces contain part dust and smell, be delivered to carry out in mixing condenser 4 cold
But process, remove the gentle taste of chalk dust removing, if tail gas is up to standard can discharge, or entrance plant tail gas house steward is processed further, washing
Water circulation, is partially into Waste Water Treatment.
The present invention achieves the mummification of water-containing sludge by the way of contact drying, and flow process is simply compact, reduces mud
The cost processing and energy consumption.
Claims (10)
1. a kind of sludge drying system, including dewaterer (1), scraper plate film drier (2), helical feed cooler (3) and mixed
Close condenser (4) it is characterised in that：Described scraper plate film drier (2) includes rotating shaft (201), drying chamber (202), scraper plate
(203) and heat medium cavity (204), described drying chamber (202) respectively with charging aperture, discharging opening and vapours outlet, described scrape
Plate (203) is arranged at that rotating shaft (201) is upper and wall of along drying chamber (202) rotates, described heat medium cavity (204) respectively with heating agent
Input pipe connects with heating agent efferent duct, and the mud mouth of described dewaterer (1) passes through delivery pump (5) and scraper plate film drier (2)
Charging aperture connection, the discharging opening of described scraper plate film drier (2) connected with the charging aperture of helical feed cooler (3), institute
The discharging opening bottom stating helical feed cooler (3) is provided with the output device (6) of dewatered sludge, described scraper plate film drier (2)
Vapours outlet connect with mixing condenser (4), the bottom of described mixing condenser (4) is provided with condensate drain, top
It is provided with exhaust emission tube.
2. a kind of sludge drying system according to claim 1 it is characterised in that：This system is combined with sludge incinerator,
The discharging opening of described scraper plate film drier (2) is provided with another branch and conveys mud to sludge incinerator, and described mud burns
Burn stove heating agent to be heated and connects with the heating agent input pipe of heat medium cavity (204).
3. a kind of sludge drying system according to claim 1 it is characterised in that：Described dewaterer (1) be centrifuge or
Person's belt filter press.
4. a kind of sludge drying system according to claim 1 it is characterised in that：Described scraper plate (203) is along rotating shaft
(201) circumference is uniformly arranged the length direction uniform intervals for the scraper plate (203) in some rows, each row along rotating shaft (201).
5. a kind of sludge drying system according to claim 1 it is characterised in that：Described delivery pump (5) adopts screw pump.
6. a kind of sludge drying system according to claim 1 it is characterised in that：Described output device (6) is using transmission
Band is transmitted, and the end of output device (6) is provided with the container (7) collecting dewatered sludge.
7. a kind of sludge drying system according to claim 1 it is characterised in that：The tail gas of described mixing condenser (4)
Exhaust blower and segregator (8), the liquid outlet of described segregator (8) and the condensation of mixing condenser (4) are sequentially provided with discharge pipe
Liquid discharge pipe connects.
8. a kind of sludge drying method of the sludge drying system described in utilization claim 1, comprises the following steps：
(1) raw sludge is dehydrated using dewaterer (1)；
(2) mud after being dehydrated is delivered in the drying chamber (202) of scraper plate film drier (2) by delivery pump (5), to heating agent
It is passed through heating agent in chamber (204) mud is dried；
(3) dried mud enters helical feed cooler (3), carries out cooling down by refrigerant and obtains dewatered sludge；
(4) dewatered sludge after cooling down is exported and is collected by output device (6)；
(5) vapours that step (2) produces be delivered in mixing condenser (4) carry out cooling down, dedusting and taste removal, tail gas enters system
One process.
9. a kind of sludge drying method according to claim 8 it is characterised in that：Described heating agent adopts steam or heat conduction
Oil, described refrigerant adopts recirculated cooling water.
10. a kind of sludge drying method according to claim 8 it is characterised in that：Described heating agent adopts sludge incinerator
Heated, what the sludge fuel of described sludge incinerator was derived from step (2) is dried mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610935227.4A CN106430898A (en) | 2016-11-01 | 2016-11-01 | Sludge drying system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610935227.4A CN106430898A (en) | 2016-11-01 | 2016-11-01 | Sludge drying system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106430898A true CN106430898A (en) | 2017-02-22 |
Family
ID=58177991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610935227.4A Pending CN106430898A (en) | 2016-11-01 | 2016-11-01 | Sludge drying system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106430898A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439763A (en) * | 2018-05-28 | 2018-08-24 | 北京艺高人和工程设备有限公司 | A kind of two-period form thin layer sludge drying system |
| CN108640473A (en) * | 2018-07-04 | 2018-10-12 | 福建省东南电化股份有限公司 | A kind of sludge dry system in wastewater treatment process |
| CN109133561A (en) * | 2017-06-19 | 2019-01-04 | 乔丙年 | Mud drying device |
| CN110002181A (en) * | 2019-01-25 | 2019-07-12 | 中国联合工程有限公司 | A kind of sewage sludge storage and structure for conveying |
| EP3759056A4 (en) * | 2018-03-01 | 2022-05-11 | Steve Macchio | Systems and methods for environmentally-clean thermal drying |
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| CN101352721A (en) * | 2007-07-23 | 2009-01-28 | 周鼎力 | Method for sequentially processing consumer waste |
| CN202638011U (en) * | 2012-06-04 | 2013-01-02 | 辽宁和运合成橡胶研究院有限公司 | Drying device for liquid rubber |
| CN202988932U (en) * | 2012-11-23 | 2013-06-12 | 首大能源环保集团有限公司 | Sludge comprehensive disposal system |
| CN103420549A (en) * | 2013-07-26 | 2013-12-04 | 新汶矿业集团有限责任公司 | Harmless waste treatment method in coal chemical industry |
-
2016
- 2016-11-01 CN CN201610935227.4A patent/CN106430898A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352721A (en) * | 2007-07-23 | 2009-01-28 | 周鼎力 | Method for sequentially processing consumer waste |
| CN202638011U (en) * | 2012-06-04 | 2013-01-02 | 辽宁和运合成橡胶研究院有限公司 | Drying device for liquid rubber |
| CN202988932U (en) * | 2012-11-23 | 2013-06-12 | 首大能源环保集团有限公司 | Sludge comprehensive disposal system |
| CN103420549A (en) * | 2013-07-26 | 2013-12-04 | 新汶矿业集团有限责任公司 | Harmless waste treatment method in coal chemical industry |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109133561A (en) * | 2017-06-19 | 2019-01-04 | 乔丙年 | Mud drying device |
| EP3759056A4 (en) * | 2018-03-01 | 2022-05-11 | Steve Macchio | Systems and methods for environmentally-clean thermal drying |
| US12007167B1 (en) | 2018-03-01 | 2024-06-11 | Steve Macchio | Systems and methods for environmentally-clean thermal drying |
| CN108439763A (en) * | 2018-05-28 | 2018-08-24 | 北京艺高人和工程设备有限公司 | A kind of two-period form thin layer sludge drying system |
| CN108640473A (en) * | 2018-07-04 | 2018-10-12 | 福建省东南电化股份有限公司 | A kind of sludge dry system in wastewater treatment process |
| CN110002181A (en) * | 2019-01-25 | 2019-07-12 | 中国联合工程有限公司 | A kind of sewage sludge storage and structure for conveying |
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| PB01 | Publication | ||
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Application publication date: 20170222 |