CN102249504A - System for continually mixing, modifying and pelletizing dewatered sludge - Google Patents
System for continually mixing, modifying and pelletizing dewatered sludge Download PDFInfo
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- CN102249504A CN102249504A CN 201110147276 CN201110147276A CN102249504A CN 102249504 A CN102249504 A CN 102249504A CN 201110147276 CN201110147276 CN 201110147276 CN 201110147276 A CN201110147276 A CN 201110147276A CN 102249504 A CN102249504 A CN 102249504A
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Abstract
The invention discloses a system for continually mixing, modifying and pelletizing dewatered sludge, belonging to environment-friendly equipment. According to the pelletizing system, a screw rod metering material adding way and a continuous stirrer mixing way are adopted, so that uniform mixing of sludge and a curing agent material is facilitated, sludge particles are fully contacted and reacted with the curing agent material, and continuous working capability is achieved; a sludge storage bin, a stirrer, strengthening equipment and a dedusting tower pipeline are connected to a gas purifying device, so that dust and odor of a working field are reduced, and secondary pollution is avoided; the mineralization reaction rate of a curing agent and moisture dissipation speed are accelerated when the strengthening equipment is adopted for treating a sludge-curing agent mixture; and a pelletizing machine is adopted, so that the size of a sludge solidified block is reduced, the moisture dissipation surface area and the sludge particle oxidation surface area are increased, and the drying time of sludge is shortened. The treated sludge has the advantages of low water content, low odor, immobilization, certain shearing resistance and certain internal friction angle, and can meet the requirement of a roadbed backfill and the requirement of filling on a sanitary landfill yard.
Description
Technical field
The invention discloses the continuously equal mixed modification granulation system of a kind of dewatered sludge, belong to the environmental protection equipment class.
Background technology
Along with the municipal sewage treatment Facilities Construction progressively raise speed and the sewage centralized treatment rate improve the sharp increase of sludge of sewage treatment plants generation day by day.According to relevant prediction, China's municipal effluent amount also has in next two decades and increases substantially, and quantity of wastewater effluent will reach 440 * 108m3/d in 2010; The year two thousand twenty quantity of wastewater effluent reaches 536 * 108m3/d; Sludge quantity accounts for 0.3%～0.5% (volume) of sewage quantity usually or is about 1%～2% (quality) of sewage load.And if sewage is carried out advanced treatment again, sludge quantity also can increase by 0.5～1 times.At present wastewater treatment in China amount and processing rate not high (4.5%), and about 9,000,000 t of municipal sewage plant's annual discharging mud, but also with the speed increment in every year about 10%.
The mud landfill is extensively promoted employing as cheap practical processing means in the large-and-medium size cities of China, yet because the moisture percentage in sewage sludge height, organic content is abundant, intensity is low, and directly landfill easily causes secondary pollution or the landfill yard unstability takes place and dash forward gushing accident, causes enormous economic loss.Lagged behind the greatly paces of China environmental protection and improvement of the severe situation that sewage sludge harmlessness is handled have caused showing great attention to of government and relevant departments.For this reason, the intensity of reduction moisture percentage in sewage sludge and organic content, raising mud must be the essential means that promote the development of mud landfill.
Modified sewage sludge is carried out granulated processed; realize mud moulding transportation landfill; not only effectively stoped mud to drip to spatter and mummification dust from flying and the secondary pollution that causes have also further improved the intensity of mud, thereby guaranteed the security of mud landfill by moulding.Yet, at present domesticly on mud granulation landfill disposal, also be in the blank stage, unprecedentedly deficient at the special mechanical equipment of the granulation of mud, and part is existing also faces granulation grain forming instability with equipment, intensity is not high, and the rate of working continuously is low to wait predicament.
Summary of the invention
At above-mentioned existing problems, the object of the present invention is to provide a kind of have work continuously, mix, sludge treatment is effective, the dewatered sludge of non-secondary pollution equal mixed modification granulation system continuously, to achieve these goals, its technical solution is:
The continuously equal mixed modification granulation system of a kind of dewatered sludge; granulation system is by mud feed bin (1); auxiliary feed bin (2); first screw metering pump (7); second screw metering pump (8); brute force is all mixed stirrer (10); strengthening device (12); sludge granulator (14); bucket elevator (15); gas wash tower (4); gas-cleaning installation (6); screw rod conveyor (11) and conveying belt (13) are formed; the import of first screw metering pump (7) is connected with the outlet conduit of mud feed bin (1); the outlet of first screw metering pump (7) and brute force are all mixed the sludge inlet pipe connection on the stirrer (10); the import of second screw metering pump (8) is connected with the outlet conduit of auxiliary feed bin (2); the outlet of second screw metering pump (8) is connected with the solidifying agent inlet pipeline that brute force is all mixed on the stirrer (10); brute force is all mixed the feed end of the discharge port connecting screw rod transfer roller (11) of stirrer (10); the discharge end of screw rod conveyor (11) is connected with the opening for feed of strengthening device (12); the discharge port of strengthening device (12) is positioned at the top of rotary conveyor (13) feed end; the opening for feed of sludge granulator (14) is positioned at the below of rotary conveyor (13) blanking end; the discharge port of sludge granulator (14) is positioned at the top of bucket elevator (15) feed end; bucket elevator (15) feed end; inlet mouth on the gas wash tower (4) is connected with air outlet on the strengthening device (12) with the air outlet that brute force is all mixed on the stirrer (10) respectively by pipeline through the 3rd vacuum fan (9); the inlet mouth of gas-cleaning installation (6) is connected with air outlet on the mud feed bin (1) through first vacuum fan (3) by pipeline, and the air outlet on the gas wash tower (4) is connected through the inlet mouth of second vacuum fan (5) with gas-cleaning installation (6) by pipeline.
Be respectively arranged with material level indicating unit and high and low position alarm unit on mud feed bin (1), the auxiliary feed bin (2).Gas-cleaning installation (6) can be activated carbon column or complete odor treatment device.
Stirrer is a kind of in ploughshare continuous mixers, single shaft or the multiaxis continuous mixers.
Owing to adopted above technical scheme, the continuously equal mixed modification granulation system of dewatered sludge of the present invention adopts screw rod metering material addition manner and continuous mixers hybrid mode, promote that mud and solidifying agent material mixing are even, reach mud granule and fully contact with the solidifying agent material and react, have the ability of working continuously; Mud feed bin, stirrer, strengthening device and gas wash tower pipe connection have reduced operation field dust and stink to gas-cleaning installation, have avoided secondary pollution; Adopt strengthening device to accelerate solidifying agent mineralising speed of reaction and the dissipation of acceleration moisture to mud and solidifying agent compound; Adopt tablets press will reduce sludge curing formed blocks yardstick, it is long-pending to have increased moisture loss surface-area and mud granule oxidized surface, has shortened the time of sludge drying.It is low that mud after the processing has a water ratio, and stink is low, do not flow, and has certain shear strength and internal friction angle, can satisfy requirement of roadbed backfill and the requirement of sanitary filling field landfill.The continuously equal mixed modification granulation system of this dewatered sludge has and can work continuously, and treatment capacity is big, and environmental pollution is little, high treating effect.
Description of drawings
Accompanying drawing is the synoptic diagram of the continuously equal mixed modification granulation system of dewatered sludge of the present invention.
Embodiment
Below in conjunction with accompanying drawing the continuously equal mixed modification granulation system of a kind of dewatered sludge of the present invention is described in detail: see accompanying drawing
The continuously equal mixed modification granulation system of a kind of dewatered sludge; granulation system is by mud feed bin 1; auxiliary feed bin 2; first screw metering pump 7; second screw metering pump 8; brute force is all mixed stirrer 10; strengthening device 12; sludge granulator 14; bucket elevator 15; gas wash tower 4; gas-cleaning installation 6; screw rod conveyor 11 and conveying belt 13 are formed; the import of first screw metering pump 7 is connected with the outlet conduit of mud feed bin 1; the outlet of first screw metering pump 7 and the powerful sludge inlet pipe connection that all mixes on the stirrer 10; the import of second screw metering pump 8 is connected with the outlet conduit of auxiliary feed bin 2, and the outlet of second screw metering pump 8 is connected with the powerful solidifying agent inlet pipeline that all mixes on the stirrer 10.Be respectively arranged with material level indicating unit and high and low position alarm unit on mud feed bin 1, the auxiliary feed bin 2.The material level indicating unit is used to monitor the material position to be limit, and high and low position alarm unit is respectively applied at material level and exceeds high-order limit and low level warning in limited time.The powerful feed end that all mixes the discharge port connecting screw rod transfer roller 11 of stirrer 10, the discharge end of screw rod conveyor 11 is connected with the opening for feed of strengthening device 12, and the discharge port of strengthening device 12 is positioned at the top of rotary conveyor 13 feed ends.Stirrer is a kind of in ploughshare continuous mixers, single shaft or the multiaxis continuous mixers.Adopt the ploughshare continuous mixers, can turn over mud and copy centrifugal mix, promote mud and solidifying agent to mix.When adopting single shaft or multiple-rotor mixer, mud can be mixed in the mode of extruding with solidifying agent, possess the ability of working continuously.The opening for feed of sludge granulator 14 is positioned at the below of rotary conveyor 13 blanking ends; the discharge port of sludge granulator 14 is positioned at the top of bucket elevator 15 feed ends; bucket elevator 15 feed ends; inlet mouth on the gas wash tower 4 is connected with air outlet on the strengthening device 12 with the air outlet that brute force is all mixed on the stirrer 10 respectively by pipeline through the 3rd vacuum fan 9; the inlet mouth of gas-cleaning installation 6 is connected with air outlet on the mud feed bin 1 through first vacuum fan 3 by pipeline, and the air outlet on the gas wash tower 4 is connected with the inlet mouth of gas-cleaning installation 6 through second vacuum fan 5 by pipeline.Gas-cleaning installation 6 can be activated carbon column or complete deodorizing equipment.Strengthening device 12 can be selected heat drying equipment, microwave mummification equipment for use or be the mummification equipment of media with the thermal source.The granulating equipment of modes such as sludge granulator 14 optional extruding, cutting.
Concrete principle of work
The dewatered sludge input mud feed bin 1 slow storage of municipal wastewater treatment plant, slow deposit is used in the auxiliary feed bin 2 of solidifying agent input.First screw metering pump 7 and second screw metering pump 8 are 100: 5～30 setting feed rate according to the mass ratio of dewatered sludge and solidifying agent, and the solidifying agent in mud in the mud feed bin 1 and the auxiliary feed bin 2 is expected synchronously in all mixed stirrer 10 of brute force.Brute force is all mixed stirrer 10 and is received mud and solidifying agent on one side, on one side the mud and the solidifying agent that will stir in the cabin mix, make modified sewage sludge, and carry to discharge port.Modified sewage sludge is delivered to strengthening device 12 through screw rod conveyor 11, and under the heat effect, the moisture in the modified sewage sludge dissipates rapidly and evaporation, realizes that water ratio reduces mummification.Modified sewage sludge is transported to granulating equipment 14 and makes the mud granular particle by rotary conveyor 13 after strengthening device 12 drying and other treatment.
The mud granular particle is promoted to the slow warehouse 16 of pellet through bucket elevator 15, again according to processing intent, can be dumped into haulage truck 17 or enter stockyard 18 and place.
Claims (4)
1. a dewatered sludge equal mixed modification granulation system continuously; it is characterized in that: granulation system is by mud feed bin (1); auxiliary feed bin (2); first screw metering pump (7); second screw metering pump (8); brute force is all mixed stirrer (10); strengthening device (12); sludge granulator (14); bucket elevator (15); gas wash tower (4); gas-cleaning installation (6); screw rod conveyor (11) and conveying belt (13) are formed; the import of first screw metering pump (7) is connected with the outlet conduit of mud feed bin (1); the outlet of first screw metering pump (7) and brute force are all mixed the sludge inlet pipe connection on the stirrer (10); the import of second screw metering pump (8) is connected with the outlet conduit of auxiliary feed bin (2); the outlet of second screw metering pump (8) is connected with the solidifying agent inlet pipeline that brute force is all mixed on the stirrer (10); brute force is all mixed the feed end of the discharge port connecting screw rod transfer roller (11) of stirrer (10); the discharge end of screw rod conveyor (11) is connected with the opening for feed of strengthening device (12); the discharge port of strengthening device (12) is positioned at the top of rotary conveyor (13) feed end; the opening for feed of sludge granulator (14) is positioned at the below of rotary conveyor (13) blanking end; the discharge port of sludge granulator (14) is positioned at the top of bucket elevator (15) feed end; bucket elevator (15) feed end; inlet mouth on the gas wash tower (4) is connected with air outlet on the strengthening device (12) with the air outlet that brute force is all mixed on the stirrer (10) respectively by pipeline through the 3rd vacuum fan (9); the inlet mouth of gas-cleaning installation (6) is connected with air outlet on the mud feed bin (1) through first vacuum fan (3) by pipeline, and the air outlet on the gas wash tower (4) is connected through the inlet mouth of second vacuum fan (5) with gas-cleaning installation (6) by pipeline.
2. the continuously equal mixed modification granulation system of a kind of dewatered sludge as claimed in claim 1 is characterized in that: be respectively arranged with material level indicating unit and high and low position alarm unit on mud feed bin (1), the auxiliary feed bin (2).
3. the continuously equal mixed modification granulation system of a kind of dewatered sludge as claimed in claim 1, it is characterized in that: gas-cleaning installation (6) can be activated carbon column or complete odor treatment device.
4. a kind of dewatered sludge as claimed in claim 1 is the mixed modification granulation system continuously all, it is characterized in that: stirrer is a kind of in ploughshare continuous mixers, single shaft or the multiaxis continuous mixers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101472769A CN102249504B (en) | 2011-06-02 | 2011-06-02 | System for continually mixing, modifying and pelletizing dewatered sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101472769A CN102249504B (en) | 2011-06-02 | 2011-06-02 | System for continually mixing, modifying and pelletizing dewatered sludge |
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| CN102249504A true CN102249504A (en) | 2011-11-23 |
| CN102249504B CN102249504B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101472769A Expired - Fee Related CN102249504B (en) | 2011-06-02 | 2011-06-02 | System for continually mixing, modifying and pelletizing dewatered sludge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103288323A (en) * | 2013-05-20 | 2013-09-11 | 徐炳荣 | Electric heating sludge treatment system |
| CN103570211A (en) * | 2013-11-18 | 2014-02-12 | 兰州交通大学 | Novel method for drying urban sludge |
| CN103601354A (en) * | 2013-08-07 | 2014-02-26 | 徐炳荣 | Chain plate natural gas heating sludge drying device and sludge drying processing method |
| CZ309437B6 (en) * | 2021-08-30 | 2023-01-11 | Vysoká Škola Báňská-Technická Univerzita Ostrava | Device for setting the angle of internal friction of loose materials |
| CN116495949A (en) * | 2023-04-03 | 2023-07-28 | 日照城投环境科技集团有限公司 | Automatic treatment device for municipal sludge |
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| JPS57205491A (en) * | 1981-06-12 | 1982-12-16 | Ebaron Kasei Kk | Treatment of oil sludge |
| JPH02160100A (en) * | 1988-12-14 | 1990-06-20 | Hitachi Metals Ltd | Method for granulating and dehydrating sludge |
| JPH11347593A (en) * | 1998-06-05 | 1999-12-21 | Nakamichi Kankyo Kaihatsu:Kk | Construction sludge closed type recycle treatment system |
| JP2003304739A (en) * | 2002-04-18 | 2003-10-28 | Oji Ryokka Kk | Aggregate soil comprising mud or waste soil and method for producing the same |
| JP2009202078A (en) * | 2008-02-27 | 2009-09-10 | Taiheiyo Cement Corp | Drying and granulation system of wet organic waste |
| JP2010279939A (en) * | 2009-06-03 | 2010-12-16 | Taiko Kogyo Kk | Recycling apparatus and treatment method of sludge |
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2011
- 2011-06-02 CN CN2011101472769A patent/CN102249504B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57205491A (en) * | 1981-06-12 | 1982-12-16 | Ebaron Kasei Kk | Treatment of oil sludge |
| JPH02160100A (en) * | 1988-12-14 | 1990-06-20 | Hitachi Metals Ltd | Method for granulating and dehydrating sludge |
| JPH11347593A (en) * | 1998-06-05 | 1999-12-21 | Nakamichi Kankyo Kaihatsu:Kk | Construction sludge closed type recycle treatment system |
| JP2003304739A (en) * | 2002-04-18 | 2003-10-28 | Oji Ryokka Kk | Aggregate soil comprising mud or waste soil and method for producing the same |
| JP2009202078A (en) * | 2008-02-27 | 2009-09-10 | Taiheiyo Cement Corp | Drying and granulation system of wet organic waste |
| JP2010279939A (en) * | 2009-06-03 | 2010-12-16 | Taiko Kogyo Kk | Recycling apparatus and treatment method of sludge |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103288323A (en) * | 2013-05-20 | 2013-09-11 | 徐炳荣 | Electric heating sludge treatment system |
| CN103288323B (en) * | 2013-05-20 | 2014-09-03 | 徐炳荣 | Electric heating sludge treatment system |
| CN103601354A (en) * | 2013-08-07 | 2014-02-26 | 徐炳荣 | Chain plate natural gas heating sludge drying device and sludge drying processing method |
| CN103601354B (en) * | 2013-08-07 | 2015-04-01 | 徐炳荣 | Chain plate natural gas heating sludge drying device and sludge drying processing method |
| CN103570211A (en) * | 2013-11-18 | 2014-02-12 | 兰州交通大学 | Novel method for drying urban sludge |
| CZ309437B6 (en) * | 2021-08-30 | 2023-01-11 | Vysoká Škola Báňská-Technická Univerzita Ostrava | Device for setting the angle of internal friction of loose materials |
| CN116495949A (en) * | 2023-04-03 | 2023-07-28 | 日照城投环境科技集团有限公司 | Automatic treatment device for municipal sludge |
| CN116495949B (en) * | 2023-04-03 | 2024-01-16 | 日照城投环境科技集团有限公司 | Automatic treatment device for municipal sludge |
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| CN102249504B (en) | 2012-11-07 |
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