CN106396331A - A sludge concentration-dehydration-drying integrated treatment plant and a treating method thereof - Google Patents
A sludge concentration-dehydration-drying integrated treatment plant and a treating method thereof Download PDFInfo
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- CN106396331A CN106396331A CN201610544749.1A CN201610544749A CN106396331A CN 106396331 A CN106396331 A CN 106396331A CN 201610544749 A CN201610544749 A CN 201610544749A CN 106396331 A CN106396331 A CN 106396331A
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- sludge
- filter
- sludge concentration
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- filter screen
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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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- 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)
- Filtration Of Liquid (AREA)
- Treatment Of Sludge (AREA)
Abstract
A sludge concentration-dehydration-drying integrated treatment plant and a treating method thereof are disclosed. The integrated treatment plant includes a sludge concentration device and a sludge deep-dehydration device. The sludge concentration device includes a wedge-shaped filter screen and a rotating first spiral shaft. The wedge-shaped filter screen includes a low-concentration sewage filtration segment, a sludge concentration segment and a sludge extruding segment. The first spiral shaft includes a central shaft, a first rubber ring and a first spiral blade. The sludge deep-dehydration device includes a spiral conveying-extrusion integrated machine and an extruding dehydrating chamber. The spiral conveying-extrusion integrated machine includes a second spiral blade, a conveying shell and a second spiral shaft varying in pitch. The extruding dehydrating chamber includes a left filtration plate, a right filtration plate and a middle filtration plate. The left and right filtration plates adopt the middle filtration plate as an axis and expand outward or close inward. The integrated treatment plant overcomes problems of the prior art that water contents after sludge treatment are high and a running cost is high.
Description
Technical field
The present invention relates to sludge condensation and dehydration and drying field, particularly to a kind of municipal sludge or plant, the sludge concentration and dewatering desiccation integral processing meanss of septic tank and its processing method.
Background technology
At present in sewage disposal process, a kind of accessory substance mud all can be produced, mud is solids of sedimentation material produced by water and sewage disposal process, and sludge dewatering is exactly to concentrate or digested sludge removing moisture, is converted into a kind of method for sludge treatment of semisolid or solid-state clod.And energy-saving and emission-reduction are one of fundamental state policies of China's sustained economic development, with the reinforcement of water environment treatment and protection, the treatment technology of sludge dewatering also constantly develops.
Existing municipal sludge or plant, the sludge condensation of septic tank, the equipment of dehydration and drying technology typically have plate and frame filter, folded spiral shell formula filter, disc type sludge dewatering equipment, belt type dewaterer etc., the following defect of generally existing：1）After dehydration, moisture content is too high, general process after its moisture content be also up to 70-80%, do not reach the requirement that dewatered sludge is filled or the terminal processes moisture content such as burned；2）The operating cost of device fabrication cost or processed in units amount is too high；3）Occupation area of equipment and space are excessive.
Therefore, the present inventor makes further research to this, develops a kind of sludge concentration and dewatering desiccation integral processing meanss and its processing method, and this case thus produces.
Content of the invention
The technical problem to be solved is to provide a kind of sludge concentration and dewatering desiccation integral processing meanss and its processing method, to solve moisture content height, the big problem of operating cost after Treatment of Sludge in prior art.
For solving above-mentioned technical problem, the technical solution of the present invention is：
A kind of sludge concentration and dewatering desiccation integral processing meanss, including sludge concentration device and sludge deep dehydrator, sludge concentration device connects sludge deep dehydrator；
Described sludge concentration device includes wedge shape filter screen and the first helical axis of rotation, and described wedge shape filter screen includes sewage of low concentration fillter section, sludge condensation section and mud extruded segment；Sewage of low concentration fillter section, sludge condensation section and mud extruded segment are sequentially connected, varying pitch and the first helical axis of variable diameters includes central shaft, the first rubber ring and the first helical blade, first helical blade is installed on center shaft, and the first rubber ring is enclosed between the first helical blade and wedge shape filter screen；
Described sludge deep dehydrator includes helical feed and extruding all-in-one and extrusion dehydration room, described helical feed includes the second helical axis of the second helical blade, conveying housing and varying pitch with extruding all-in-one, second helical blade is arranged on the second helical axis, described extrusion dehydration room includes left filter, right filter and intermediate filtered plate, left filter and right filter, with intermediate filtered plate as axle, are flared out or inwardly close.
Further, described sludge concentration device also includes charging aperture, discharging opening and spiral axial brake device, and described discharging opening includes discharging pressing plate, compression spring, stop collar and spacing regulating bolt.
Further, described sludge deep dehydrator also includes driving means and the feed hopper being connected with sludge concentration device, feed hopper is connected with conveying housing, is connected by bearing block, described bearing block includes the taper roll bearing of a pair back-to-back installation between driving means and the second helical axis.
Further, intermediate filtered plate is made up of filter cloth, intermediate wedge filter screen, filter plate body, filtrate (liquid and compressed air inlet, and filter cloth, intermediate wedge filter screen and filter plate body form a hollow cavity.
Further, left filter is made up of left filter cloth, left wedge shape filter screen, left outside shrouding and left liquid outlet, and left filter cloth, left wedge shape filter screen and left outside shrouding form the left filtrate chamber of a sealing；Right filter is made up of right filter cloth, right wedge shape filter screen, right outer shrouding and right liquid outlet, and right filter cloth, right wedge shape filter screen become the right filtrate chamber of a sealing with right covering plate shape.
Further, extrusion dehydration room also includes opening device, opening device is by opening oil cylinder or cylinder, left connecting rod, right connecting rod, hinged seat form, left connecting rod and right connecting rod are hinged with left filter and right filter respectively, when the piston rod opening oil cylinder or cylinder stretches out, left filter and right filtration plate closing, when the piston rod opening oil cylinder or cylinder is retracted, left filter and right filter are flared out discharging.
Further, extrusion dehydration room also includes locking device, locking device is made up of locking cylinder or cylinder, locking pin, left filter is provided with left locking lug plate holes, right filter is provided with right locking lug plate holes, when the piston rod of locking cylinder or cylinder stretches out or retracts, drive locking pin insertion or exit left locking lug plate holes and right locking lug plate holes, make left filter and right filtration plate closing or open.
A kind of sludge concentration and dewatering desiccation integral processing method, comprises the following steps：
Step one：Primary concentration is dehydrated：Pending mud is delivered to sludge concentration device, preliminary extruding and drive mud to wedge shape filter screen is carried out by the first helical axis of sludge concentration device to mud, mud passes sequentially through that sewage of low concentration fillter section filters most of Free water, sludge condensation section filters remaining Free water and mud extruded segment filters partial interior water, and mud granule is separated with water；
Step 2：Two grades of deep dehydrations, mummification：The mud crossed through primary concentration processed is delivered to sludge deep dehydrator, conveyed with extruding all-in-one through helical feed and extruded to extrusion dehydration room, in extrusion dehydration room, when left filter and right filtration plate closing, the surface adsorption water of compressed air stripping mud granule, makes sludge drying, discharges filtrate simultaneously, when left filter and right filter are flared out, you can be met the mud of water content requirement.
Further, in step one：The rotary speed of the first helical axis controls in 1.5-3.5r/min；
Further, in step 2：The toggle speed of the second helical axis of helical feed and extruding all-in-one, in 7r/min, after mud is filled up in extrusion dehydration room, starts to be dehydrated；Increase with pressure, the rotary speed of the second helical axis is gradually lowered, and when rotary speed is reduced to 1.5r/min, intermediate filtered plate is passed through compressed air, the surface adsorption water of compressed air stripping mud granule；Compressed air pressure is 0.7-1Mpa.
After such scheme, the present invention constantly conveys mud by the first helical axis of sludge concentration device and carries out segmentation filtration to wedge shape filter screen, control the precision filtering, then again through helical feed and extruding all-in-one screw extrusion and the conveying of sludge deep dehydrator, extruding mud deep dehydration in extrusion dehydration room.The present invention has advantages below：
1, sludge concentration device achieves with different pressures, the segmentation filter design of different filtering accuracies, the filtering accuracy enabling mud of the present invention is well controlled, remove its most Free water, the sewage of high-moisture percentage or sludge condensation can be made to become the mud that moisture content is 80-85%, screw extrusion in sludge deep dehydrator, compressed air extrudes, compressed air stripping acts on, make the surface water of mud granule, internal junction Heshui removes, mummification becomes moisture content to be less than 50% mud, there is good dehydrating effect, thus reaching landfill yard, burn the water content requirement required by terminal processes such as station；
2nd, the sludge concentration device of the present invention and sludge deep dehydrator structure are simple, can work continuously, and treating capacity is big, and the running cost compared prior art of its device fabrication or processed in units amount is low；
3rd, the present invention adopts Fully-mechanized process, and rotating speed is low, thus its low cost of manufacture, the little long service life of operation noise, and its apparatus structure using is compact, and floor space and space are less.
Brief description
Fig. 1 is the structural representation of the sludge concentration device of the present invention；
Fig. 2 is the structural representation of the sludge deep dehydrator of the present invention；
Fig. 3 is sectional view when the left filter in Fig. 2 A-A direction and right filtration plate closing；
Fig. 4 is the dextrad view of Fig. 2 when left filter and right filtration plate closing；
The dextrad view of Fig. 2 when Fig. 5 is left filter and right filter opens；
Fig. 6 is the front view of intermediate filtered plate of the present invention；
Fig. 7 is the left-hand view of Fig. 6；
Fig. 8 is the partial enlarged drawing of intermediate filtered plate of the present invention.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.Disclosed is a kind of sludge concentration and dewatering desiccation integral processing meanss, as depicted in figs. 1 and 2, a kind of sludge concentration and dewatering desiccation integral processing meanss, including sludge concentration device 1 and sludge deep dehydrator 2, sludge concentration device 1 connects sludge deep dehydrator 2.
Described sludge concentration device 1 includes wedge shape filter screen 11 and the first helical axis 12 of rotation, and described wedge shape filter screen 11 includes sewage of low concentration fillter section 111, sludge condensation section 112 and mud extruded segment 113；Sewage of low concentration fillter section 111, sludge condensation section 112 and mud extruded segment 113 are sequentially connected, sewage of low concentration fillter section 111, sludge condensation section 112 and mud extruded segment 113 are according in filter process, the different pressures setting of sludge concentration device, there are different filtering accuracies, in the present embodiment, the aperture of filter screen of sewage of low concentration fillter section 111 is 0.5mm, and the aperture of filter screen of sludge condensation section 112 is 0.3mm, and the aperture of filter screen of mud extruded segment 113 is 0.1mm.
First helical axis 12 is varying pitch, the axle of variable diameters in order to after adapting to sludge condensation volume reduce, keep the enough extruding forces between the first helical axis 12 and wedge shape filter screen 11.
First helical axis 12 includes central shaft 121, the first rubber ring 122 and the first helical blade 123, first helical blade 123 is arranged on central shaft 121, first rubber ring 122 is enclosed between the first helical blade 123 and wedge shape filter screen 11, the space between two the first helical blades 123 not only can be sealed, reduce soiling solution to flow backwards, improve the operating efficiency of sludge concentration device, and the abrasion that the first helical blade 123 is led to because of directly contact can be reduced with wedge shape filter screen 11, improve the service life of sludge concentration device.
Described sludge deep dehydrator 2 includes helical feed and extruding all-in-one 21 and extrusion dehydration room 22, helical feed is connected extrusion dehydration room 22 with extruding all-in-one 21, and described helical feed and extruding all-in-one 21 include the second helical blade 214, conveying housing 212, the second helical axis 211 of varying pitch.Second helical axis 211 is arranged to the purpose of varying pitch：Discharge air in mud, make the mud of entrance dewatering station produce enough extruding forces.
Described extrusion dehydration room 22 includes left filter 221, right filter 222 and intermediate filtered plate 223, and left filter 221 and right filter 222, with intermediate filtered plate 223 as axle, can be flared out or inwardly close.
Further, described sludge concentration device 1 also includes charging aperture 13, discharging opening 14 and spiral axial brake device 15, and described discharging opening 14 includes discharging pressing plate 141, compression spring 142, stop collar 143 and spacing regulating bolt 144.The purpose that discharging opening 14 arranges compression spring 142, stop collar 143 and spacing regulating bolt 144 is for the pressure of conditioning of mud enrichment facility, to adapt to different types of mud.
Further, described sludge deep dehydrator 2 also includes driving means 24 and the feed hopper 23 being connected with sludge concentration device 1, feed hopper 23 is connected with conveying housing 212, it is connected by bearing block 25 between driving means 24 and the second helical axis 211, described bearing block 25 includes the taper roll bearing 251,252 of a pair back-to-back installation.Second helical axis 211 is installed for cantilevered, and the moment of flexure that the second helical axis 211 operationally produces and axial force are born by the taper roll bearing 251,252 of a pair back-to-back installation.
Further, the first helical blade 123 has flexible scraper plate.Flexible scraper plate synchronous rotary on first helical blade 123, flexible scraper plate and wedge shape filter screen 11 directly contact, wipe the mud granule being deposited on wedge shape filter screen 11 off, accelerate the rate of filtration.
Further, as shown in Fig. 6, Fig. 7 and Fig. 8, intermediate filtered plate 223 is made up of filter cloth 2231, intermediate wedge filter screen 2232, filter plate body 2233, filtrate (liquid 2234 and compressed air inlet 2235, and filter cloth 2231, intermediate wedge filter screen 2232 and filter plate body 2233 form a hollow cavity 2236.Filter cloth 2231 filtration, intermediate wedge filter screen 2232 is as filtration skeleton, when a squeeze job circulation ends, compressed air passes through compressed air inlet 2235 air inlet hollow cavity 2236, so that filter cloth 2231 is flared out, and compresses mud further, compressed air passes through filter cloth 2231 simultaneously, through mud, the surface adsorption water of stripping mud granule, so that sludge drying.
Further, as shown in Fig. 3, Fig. 4 and Fig. 5, left filter 221 is made up of left filter cloth 2211, left wedge shape filter screen 2212, left outside shrouding 2213 and left liquid outlet 2215, and left filter cloth 2211, left wedge shape filter screen 2212 and left outside shrouding 2213 form the left filtrate chamber 2214 of a sealing.Right filter 223 and left filter 221 symmetrical configuration, right filter 223 is made up of right filter cloth 2231, right wedge shape filter screen 2232, right outer shrouding 2233 and right liquid outlet 2235, and right filter cloth 2231, right wedge shape filter screen 2232 and right outer shrouding 2233 form the right filtrate chamber 2234 of a sealing.
Further, extrusion dehydration room 22 also includes opening device 224, and opening device 224 is by unlatching oil cylinder（Or cylinder）2241st, left connecting rod 2242, right connecting rod 2243, hinged seat 2244 form, and left connecting rod 2242 is hinged with left filter 221, and right connecting rod 2243 is hinged with right filter 223, when unlatching oil cylinder（Or cylinder）When 2241 piston rod stretches out, left filter 221 and right filter 223 close, when unlatching oil cylinder（Or cylinder）When 2241 piston rod is retracted, left filter 221 and right filter 223 are flared out discharging.
Further, extrusion dehydration room 22 also includes locking device 225, and locking device 225 is by locking cylinder（Or cylinder）2251st, locking pin 2252 forms, and left filter 221 is provided with left locking lug plate holes 2215, and right filter 223 is provided with right locking lug plate holes 2235, locking cylinder（Or cylinder）When 2251 piston rod stretches out or retracts, drive locking pin 2252 to insert or exit left locking lug plate holes 2215 and right locking lug plate holes 2235, so that left filter 221 and right filter 223 is closed or open.
A kind of sludge concentration and dewatering desiccation integral processing method, comprises the following steps：
Step one：Primary concentration dehydration, mummification：Pending mud is delivered to sludge concentration device 1, preliminary extruding and drive mud to wedge shape filter screen 11 is carried out by the first helical axis 12 of sludge concentration device 1 to mud, mud passes sequentially through that sewage of low concentration fillter section 111 filters most of Free water, sludge condensation section 112 filters remaining Free water and mud extruded segment 113 filters partial interior water, and mud granule is separated with water；
Step 2：Secondary concentration dehydration, mummification：The mud crossed through primary concentration dehydration, drying and other treatment is delivered to sludge deep dehydrator 2, conveyed with extruding all-in-one 21 through helical feed and extruded to extrusion dehydration room 22, in extrusion dehydration room 22, when left filter 221 and right filter 223 close, the surface adsorption water of compressed air stripping mud granule, makes sludge drying, discharges filtrate simultaneously, when left filter 221 and right filter 223 are flared out, you can be met the mud of water content requirement.
Further, in step one：The rotary speed of the first helical axis 12 controls in 1.5-3.5r/min；
Further, in step 2：The toggle speed of the second helical axis 211 of helical feed and extruding all-in-one 21, in 7r/min, after mud is filled up in extrusion dehydration room 2, starts to be dehydrated；Increase with pressure, the rotary speed of the second helical axis 211 is gradually lowered, and when rotary speed is reduced to 1.5r/min, intermediate filtered plate 223 is passed through compressed air, the surface adsorption water of compressed air stripping mud granule；Compressed air pressure is 0.7-1MPa.
The setting two-stage thickening of this device, desiccation apparatus, sewage of low concentration or mud first pass through the filtration of first order thickening device, concentration, squeezing action, remove its most Free water, the sewage of high-moisture percentage or sludge condensation can be made to become the mud that moisture content is 80-85%；Mud after concentration is through the screw extrusion of second level dehydration and drying device, compressed air extrudes, compressed air stripping acts on, the surface water of mud granule, internal junction Heshui is made to remove, mummification becomes moisture content to be less than 50% mud, reaches landfill yard, burns the water content requirement required by terminal processes such as station.
The above, be only presently preferred embodiments of the present invention, not the technical scope of the present invention imposed any restrictions, therefore the change that in every case claim under this invention and specification are done or modification, all should belong within the scope of patent of the present invention covers.
Claims (10)
1. a kind of sludge concentration and dewatering desiccation integral processing meanss it is characterised in that：Including sludge concentration device and sludge deep dehydrator；Sludge concentration device connects sludge deep dehydrator, and described sludge concentration device includes wedge shape filter screen and the first helical axis of rotation, and described wedge shape filter screen includes sewage of low concentration fillter section, sludge condensation section and mud extruded segment；Sewage of low concentration fillter section, sludge condensation section and mud extruded segment are sequentially connected, varying pitch and the first helical axis of variable diameters includes central shaft, the first rubber ring and the first helical blade, first helical blade is installed on center shaft, and the first rubber ring is enclosed between the first helical blade and wedge shape filter screen；Described sludge deep dehydrator includes helical feed and extruding all-in-one and extrusion dehydration room, described helical feed includes the second helical axis of the second helical blade, conveying housing and varying pitch with extruding all-in-one, second helical blade is arranged on the second helical axis, described extrusion dehydration room includes left filter, right filter and intermediate filtered plate, left filter and right filter, with intermediate filtered plate as axle, are flared out or inwardly close.
2. a kind of sludge concentration and dewatering desiccation integral processing meanss according to claim 1 it is characterised in that：Described sludge concentration device also includes charging aperture, discharging opening and spiral axial brake device, and described discharging opening includes discharging pressing plate, compression spring, stop collar and spacing regulating bolt.
3. a kind of sludge concentration and dewatering desiccation integral processing meanss according to claim 1 it is characterised in that：Described sludge deep dehydrator also includes driving means and the feed hopper being connected with sludge concentration device, feed hopper is connected with conveying housing, it is connected by bearing block between driving means and the second helical axis, described bearing block includes the taper roll bearing of a pair back-to-back installation.
4. a kind of sludge concentration and dewatering desiccation integral processing meanss according to claim 1 or 2 or 3 it is characterised in that：Intermediate filtered plate is made up of filter cloth, intermediate wedge filter screen, filter plate body, filtrate (liquid and compressed air inlet, and filter cloth, intermediate wedge filter screen and filter plate body form a hollow cavity.
5. a kind of sludge concentration and dewatering desiccation integral processing meanss according to claim 1 it is characterised in that：Left filter is made up of left filter cloth, left wedge shape filter screen, left outside shrouding and left liquid outlet, and left filter cloth, left wedge shape filter screen and left outside shrouding form the left filtrate chamber of a sealing；Right filter is made up of right filter cloth, right wedge shape filter screen, right outer shrouding and right liquid outlet, and right filter cloth, right wedge shape filter screen become the right filtrate chamber of a sealing with right covering plate shape.
6. a kind of sludge concentration and dewatering desiccation integral processing meanss according to claim 1 it is characterised in that：Extrusion dehydration room also includes opening device, opening device is by opening oil cylinder or cylinder, left connecting rod, right connecting rod, hinged seat form, left connecting rod and right connecting rod are hinged with left filter and right filter respectively, when the piston rod opening oil cylinder or cylinder stretches out, left filter and right filtration plate closing, when the piston rod opening oil cylinder or cylinder is retracted, left filter and right filter are flared out discharging.
7. a kind of sludge concentration and dewatering desiccation integral processing meanss according to claim 1 it is characterised in that：Extrusion dehydration room also includes locking device, locking device is made up of locking cylinder or cylinder, locking pin, left filter is provided with left locking lug plate holes, right filter is provided with right locking lug plate holes, when the piston rod of locking cylinder or cylinder stretches out or retracts, drive locking pin insertion or exit left locking lug plate holes and right locking lug plate holes, make left filter and right filtration plate closing or open.
8. a kind of sludge concentration and dewatering desiccation integral processing method it is characterised in that：Comprise the following steps：
Step one：Primary concentration is dehydrated：Pending mud is delivered to sludge concentration device, preliminary extruding and drive mud to wedge shape filter screen is carried out by the first helical axis of sludge concentration device to mud, mud passes sequentially through that sewage of low concentration fillter section filters most of Free water, sludge condensation section filters remaining Free water and mud extruded segment filters partial interior water, and mud granule is separated with water；
Step 2：Two grades of deep dehydrations, mummification：The mud crossed through primary concentration processed is delivered to sludge deep dehydrator, conveyed with extruding all-in-one through helical feed and extruded to extrusion dehydration room, in extrusion dehydration room, when left filter and right filtration plate closing, the surface adsorption water of compressed air stripping mud granule, makes sludge drying, discharges filtrate simultaneously, when left filter and right filter are flared out, you can be met the mud of water content requirement.
9. a kind of sludge concentration and dewatering desiccation integral processing method according to claim 8 it is characterised in that：In step：The rotary speed of the first helical axis controls in 1.5-3.5r/min.
10. a kind of sludge concentration and dewatering desiccation integral processing method according to claim 8 it is characterised in that：In step 2：The toggle speed of the second helical axis of helical feed and extruding all-in-one, in 7r/min, after mud is filled up in extrusion dehydration room, starts to be dehydrated；Increase with pressure, the rotary speed of the second helical axis is gradually lowered, and when rotary speed is reduced to 1.5r/min, intermediate filtered plate is passed through compressed air, the surface adsorption water of compressed air stripping mud granule；Compressed air pressure is 0.7-1Mpa.
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Cited By (6)
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| CN107379605A (en) * | 2017-07-13 | 2017-11-24 | 四川汇邦环保科技有限公司 | Squash type manure of livestock and poultry separating dry space from moist space machine |
| CN107989103A (en) * | 2017-12-07 | 2018-05-04 | 朱元彬 | Silt cleaning device in a kind of coal-mine water-house |
| CN109485224A (en) * | 2018-12-27 | 2019-03-19 | 山东祥桓环保工程有限公司 | A kind of vacuum spiral spin axis bag filter |
| CN112851078A (en) * | 2021-03-26 | 2021-05-28 | 中船重工重庆智能装备工程设计有限公司 | Automatic medicine adding device and spiral extrusion dewatering system |
| CN113087340A (en) * | 2021-04-02 | 2021-07-09 | 河北科力汽车装备股份有限公司 | Sludge heatless drying treatment device and method |
| CN116040906A (en) * | 2023-02-11 | 2023-05-02 | 郑州国研环保科技有限公司 | Deep dehydration equipment for sludge reduction treatment |
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| CN112851078A (en) * | 2021-03-26 | 2021-05-28 | 中船重工重庆智能装备工程设计有限公司 | Automatic medicine adding device and spiral extrusion dewatering system |
| CN113087340A (en) * | 2021-04-02 | 2021-07-09 | 河北科力汽车装备股份有限公司 | Sludge heatless drying treatment device and method |
| CN116040906A (en) * | 2023-02-11 | 2023-05-02 | 郑州国研环保科技有限公司 | Deep dehydration equipment for sludge reduction treatment |
| CN116040906B (en) * | 2023-02-11 | 2024-03-12 | 郑州国研环保科技有限公司 | Deep dehydration equipment for sludge reduction treatment |
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| CN106396331B (en) | 2017-07-11 |
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