CN117285228A - Sludge treatment device with deep dehydration function and drying carbonization method - Google Patents
Sludge treatment device with deep dehydration function and drying carbonization method Download PDFInfo
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- CN117285228A CN117285228A CN202311490980.3A CN202311490980A CN117285228A CN 117285228 A CN117285228 A CN 117285228A CN 202311490980 A CN202311490980 A CN 202311490980A CN 117285228 A CN117285228 A CN 117285228A
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- 239000010802 sludge Substances 0.000 title claims abstract description 307
- 230000018044 dehydration Effects 0.000 title claims abstract description 56
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 56
- 238000001035 drying Methods 0.000 title claims abstract description 50
- 238000003763 carbonization Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 37
- 208000005156 Dehydration Diseases 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000012216 screening Methods 0.000 claims abstract description 53
- 239000010865 sewage Substances 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004744 fabric Substances 0.000 claims description 174
- 238000003756 stirring Methods 0.000 claims description 36
- 238000004140 cleaning Methods 0.000 claims description 35
- 230000007246 mechanism Effects 0.000 claims description 33
- 238000001125 extrusion Methods 0.000 claims description 25
- 238000010000 carbonizing Methods 0.000 claims description 17
- 230000003750 conditioning effect Effects 0.000 claims description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 244000309464 bull Species 0.000 claims description 13
- 239000008394 flocculating agent Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 238000010170 biological method Methods 0.000 claims description 8
- 239000012265 solid product Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 11
- 238000003825 pressing Methods 0.000 description 23
- 239000003610 charcoal Substances 0.000 description 17
- 239000000843 powder Substances 0.000 description 17
- 230000008569 process Effects 0.000 description 13
- 239000007921 spray Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 229920002401 polyacrylamide Polymers 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000003834 intracellular effect Effects 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 238000009827 uniform distribution Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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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
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/0056—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Mechanical Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Food Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge treatment device with a deep dehydration function and a drying carbonization method, and relates to the technical fields of sludge treatment and resource utilization. The invention reduces the water content of the sludge, improves the heat value of the sludge, reduces the drying and carbonization scale of the rear end and reduces the carbon emission through the arrangement of a sewage treatment device, a sludge primary dehydration device, a sludge deep dehydration device, a sludge drying device, a sludge carbonization device and a crushing and screening device.
Description
Technical Field
The invention relates to the technical field of sludge treatment and resource utilization, in particular to a sludge treatment device with a deep dehydration function and a drying carbonization method.
Background
Along with the continuous improvement of the urban rate, the scale of the urban sewage plant is continuously enlarged, so that the output of the sludge in China is gradually improved, meanwhile, the general water content of the sludge in the sewage plant is about 80%, the water content is relatively high, and if the sludge is dried and carbonized subsequently, the treatment cost is high, so that an economic and efficient sludge treatment process is urgent.
The high-pressure belt type dehydration technology is a mechanical belt type dehydration technology for reducing the water content of sludge from about 80% to 55% -70%, the technology integrally and continuously operates, the continuous action time of the sludge in the technology is 3-5 minutes, and the dehydration efficiency is high.
The sludge carbonization technology is characterized in that carbonized products are formed at the high temperature of 250-700 ℃ in a low-oxygen or anaerobic environment, and the water content of the sludge can be reduced to below 5% on one hand, bacteria, viruses and the like in the sludge can be killed on the other hand, so that the purposes of sludge reduction, stability and harmlessness are achieved.
Chinese patent (CN 103951146B) discloses a sludge reduction and drying combined method, which combines the deep dehydration and drying technology of sludge and dehydrates and dries the sludge with the water content of 75-85% to below 30%. However, the patent does not relate to a sludge carbonization process, and meanwhile, the harmless treatment and disposal requirements of the sludge cannot be met.
Chinese patent (CN 105523699A) discloses a sludge drying and carbonizing device and a process, wherein sludge sequentially enters a drying furnace and a carbonizing furnace for drying and carbonizing, so that the requirements of sludge reduction, harmlessness and stabilization are met, and the belt type patent mainly aims at the process and the device of sludge drying and carbonizing, and does not relate to sludge dewatering, drying, carbonizing and subsequent recycling for full-flow elucidation.
The whole-flow treatment of sludge dewatering, drying and carbonization and back-end recycling is a relatively lacking process technology at present, so that a sludge treatment device with deep dewatering function and a drying and carbonization method are provided.
Disclosure of Invention
The invention aims to provide a sludge treatment device with a deep dehydration function and a drying carbonization method, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the sludge drying and carbonizing method with the deep dehydration function comprises the following steps of:
s1, sewage treatment;
s2, dehydrating sludge;
s3, drying sludge;
s4, carbonizing sludge;
s5, crushing and screening.
The step S1 comprises the following specific steps:
S101, treating sewage by adopting a biological method, a biomembrane method or an anaerobic biological method, settling sludge in the sewage, reducing the content of the sludge in the sewage, and then carrying out centralized treatment on the sludge at the bottom of the sewage;
the step S3 comprises the following specific steps:
s301, performing direct or indirect heat exchange on the sludge by utilizing high-temperature low-humidity air, performing drying treatment on the sludge treated in the step S2, performing drying combustion on the sludge by a sludge drying device, forming high-temperature low-humidity air by combustion, performing direct or indirect heat exchange on the high-temperature low-humidity air and the sludge treated by a high-pressure belt machine dehydration module in a drying furnace, and increasing the temperature of the dried sludge and reducing the water content of the dried sludge.
Step S4 comprises the following specific steps:
s401, directly or indirectly transferring heat between the high-temperature low-oxygen or oxygen-free gas and the sludge dried in the step S301 in a carbonization furnace to realize carbonization of the sludge, wherein the sludge carbonization device comprises a sludge carbonization burner, a carbonization furnace and a tail gas treatment device, the burner is high-temperature resistant in heating color number of the dried sludge, the carbonization furnace reduces the oxygen content of the sludge combustion environment to form a low-oxygen carbonization environment, and the tail gas treatment device is used for treating harmful gas generated by carbonization of the sludge.
Step S5 comprises the following specific steps:
s501, crushing a sludge carbonized solid product, screening according to different mesh requirements, fully crushing carbonized sludge, screening carbon powder into different mesh numbers, and recycling according to the mesh numbers of the carbon powder.
The step S2 comprises the following specific steps:
s201, dehydrating sludge precipitated from sewage, adding a flocculating agent into the sludge, reducing the water content of the sludge from about 99% to about 80%, wherein the flocculating agent is Polyacrylamide (PAM), primarily dehydrating a water body in the sludge, and reducing the working pressure and the workload of subsequent processing;
s202, adding a conditioner and a framework agent into the sludge treated in the step S201, uniformly mixing the sludge with the conditioner and the framework agent, and uniformly mixing the sludge with the conditioner and the framework agent through a sludge conditioning module to realize wall breaking of Extracellular Polymeric Substances (EPS) of the sludge, release intracellular water and improve the incompressibility of the sludge;
s203, dehydrating the sludge treated in the step S202, and simultaneously adding carbon powder to reduce the water content of the sludge from about 80% to 55% -60%.
The step S2 comprises the following specific steps:
s201, dehydrating sludge precipitated from sewage, adding a flocculating agent into the sludge, reducing the water content of the sludge from about 99% to about 80%, wherein the flocculating agent is Polyacrylamide (PAM), and primarily dehydrating a water body in the sludge;
S202, adding a conditioner into the sludge treated in the step S201, and uniformly mixing the sludge and the conditioner;
s203, dehydrating the sludge treated in the step S202, and reducing the water content of the sludge from about 80% to 65% -70% without adding carbon powder.
The sludge treatment device with the deep dehydration function comprises a sewage treatment device, a sludge primary dehydration device, a sludge drying device and a sludge carbonization device;
the sludge treatment device comprises a sludge deep dehydration device and a crushing and screening device;
the sludge deep dehydration device comprises a sludge conditioning module and a high-pressure belt machine dehydration module, wherein one side of the sludge conditioning module is connected with an outlet of the sludge primary dehydration device, the other side of the sludge conditioning module is connected with an inlet of the high-pressure belt machine dehydration module, and an outlet of the high-pressure belt machine dehydration module is connected with a sludge drying device;
one side of the sludge primary dewatering device is provided with a sewage treatment device, the other side of the sludge primary dewatering device is provided with a sludge deep dewatering device, the sludge deep dewatering device is positioned on one side of the sludge drying device, which is far away from the sludge deep dewatering device, is provided with a sludge carbonization device, the crushing and screening device is positioned on one side of the sludge carbonization device, a transmission belt is arranged between the crushing and screening device and the sludge carbonization device, and the sludge carbonization device sends carbonized sludge into the crushing and screening device through the transmission belt.
The sludge conditioning module comprises a U-shaped cylinder, a charging port is arranged at the top of the U-shaped cylinder, a dosing port is arranged at one side of the charging port, a stirring shaft is arranged on the inner wall of the U-shaped cylinder, the stirring shaft comprises a right stirring shaft and a left stirring shaft, a right stirring blade is arranged at one end of the right stirring shaft, and a left stirring blade is arranged at one end of the left stirring shaft;
the high-pressure belt machine dehydration module comprises a feed inlet, a triaxial distributing device is arranged at the bottom of the feed inlet, a lower filter cloth tensioning device is arranged at the bottom of the triaxial distributing device, a lower filter cloth deviation rectifying device is arranged at one side of the lower filter cloth tensioning device, an upper filter cloth tensioning device is arranged at the top of the lower filter cloth deviation rectifying device, an upper filter cloth deviation rectifying device is arranged at one side of the upper filter cloth tensioning device, an upper filter cloth cleaning device is arranged at one side of the upper filter cloth deviation rectifying device away from the upper filter cloth tensioning device, a lower filter cloth cleaning device is arranged at one side of the lower filter cloth deviation rectifying device away from the lower filter cloth tensioning device, a filter press roller device is arranged at the bottom of the upper filter cloth cleaning device, a filter cloth driving device is arranged at the top of the upper filter cloth cleaning device, and an upper filter cloth and a lower filter cloth are wound on the outer wall of the filter press roller device;
The sludge enters the U-shaped cylinder, the stirring shaft is driven to rotate by the driving device, the sludge, the conditioner and the framework agent are uniformly mixed, the mixed mixture is conveyed to the sludge outlet, the stirring shaft is positioned in the U-shaped cylinder, and the stirring shaft is connected with the driving device through the coupling;
the high-pressure belt machine dehydration module can realize the uniform distribution of sludge in the width direction of the filter cloth on one hand, and form a filter cloth-sludge-filter cloth sandwich structure; on the other hand, the forward and tangential two-dimensional filter pressing of the sludge clamped in the middle of the filter cloth is realized through the rotation of the roller and the application of the tension of the filter cloth, so that the water content of the sludge is reduced from about 80% to 55% -70%;
the device for evenly distributing the sludge is positioned below the sludge feeding port, a triaxial design is adopted, the sludge is evenly distributed on the effective width of the lower filter cloth, the upper filter cloth deviation correcting device and the lower filter cloth deviation correcting device are positioned between the upper filter cloth cleaning device and the lower filter cloth tensioning device, and automatic detection and automatic deviation correcting of the filter cloth are realized through photoelectric signals and extension and retraction movements of the air cylinders.
The filter cloth tensioning device is positioned in front of the sludge feeding hole, ensures that the sludge enters an upper filter cloth and a lower filter cloth and forms a sandwich structure and then keeps tension, and the upper filter cloth filter pressing roller device and the lower filter cloth filter pressing roller device are staggered up and down or left and right, so that the sandwich formed by the upper filter cloth and the lower filter cloth and the sludge passes through the filter cloth filter pressing roller device to form S-shaped arrangement, and the sludge is subjected to forward pressure and tangential shear force converted from the tension of the filter cloth, so that the sludge is dehydrated and reduced; the upper filter cloth and the lower filter cloth cleaning device are arranged between the upper filter cloth cleaning device and the lower filter cloth filter pressing roller device, the upper filter cloth cleaning device and the lower filter cloth cleaning device are driven by a gear motor to drive the upper driving roller shaft and the lower driving roller shaft to drive the upper filter cloth and the lower filter cloth to move, the upper filter cloth cleaning device and the lower filter cloth cleaning device are arranged between the upper filter cloth driving device and the lower filter cloth deviation correcting device, the upper filter cloth and the lower filter cloth are flushed in real time through the nozzle arrangement of fan-shaped water outlet, the cleaning degree of the filter cloth is guaranteed, and the sludge dewatering and decrement effects are guaranteed.
The triaxial material distribution device consists of material distribution, a roll shaft and a motor, wherein the outer wall of the roll shaft is attached to the material distribution, an output shaft of the motor is connected with a central rotating rod of the roll shaft, and the motor is started to drive the roll shaft to rotate and is used for conveying sludge;
the upper filter cloth tensioning device and the lower filter cloth tensioning device are composed of filter cloth, a roll shaft and a hydraulic cylinder, the outer wall of the roll shaft is attached to the filter cloth, two ends of the roll shaft are connected with the output end of the hydraulic cylinder, and the tensioning degree of the filter cloth and the outer wall of the roll shaft is adjusted through the telescopic hydraulic cylinder;
the upper filter cloth deviation correcting device and the lower filter cloth deviation correcting device are composed of filter cloth, sensors, hydraulic cylinders and a roll shaft, the filter cloth is wound on the outer wall of the roll shaft, the hydraulic cylinders are arranged at two ends of the roll shaft, the sensors are arranged at two ends of the roll shaft, the positions of the filter cloth rotating on the roll shaft are detected through the sensors, and after the filter cloth deflects towards one end of the roll shaft, the telescopic hydraulic cylinders drive the roll shaft to deflect, so that the positions of the filter cloth on the roll shaft are adjusted;
the upper filter cloth cleaning device and the lower filter cloth cleaning device are composed of a water pump, a spray head and a water tank, water is stored in the water tank, the top of the water tank is communicated with the water pump, one end of the water pump is connected with the spray head, the water pump sprays the water in the water tank out of the spray head, and the filter cloth is washed through the spray head;
The filter pressing roller device consists of a roller shaft and filter cloth, wherein a plurality of roller shafts are arranged in a staggered manner, the filter cloth is wound on the outer wall of the roller shaft in a staggered manner, two filter cloths are wound on the same side of the same roller shaft, so that an included angle is formed between the two filter cloths, sludge is put between the two filter cloths, and the sludge between the two filter cloths is subjected to filter pressing by rotating the roller shaft;
the filter cloth driving device consists of a motor and a roll shaft, an output shaft of the motor is connected with a central shaft of the roll shaft, and the roll shaft is driven to rotate by starting the motor to provide power for the filter pressing roller device.
Crushing screening plant includes crushing mechanism and screening mechanism, crushing mechanism's bottom is connected with screening mechanism, crushing mechanism includes the jar body, the bottom of jar body is connected with screening mechanism, the top of jar body is provided with the feeder hopper, one side of jar body is provided with the motor, the output shaft of motor is provided with power bull stick, power bull stick is connected with jar internal wall, the one end of bull stick is provided with crushing carousel, one side of crushing carousel is provided with movable carousel. The motor drives the power rotating rod to rotate, so that the power rotating rod drives the crushing rotating disc to rotate along the inner wall of the tank body, the crushing rotating disc is attached to the inner wall of the tank body, and meanwhile, the crushing rotating disc is obliquely arranged relative to the power rotating rod, so that carbon powder deposited at the bottom of the tank body can be lifted by the crushing rotating disc during rotation, and the full crushing processing of carbonized sludge is ensured.
One side of the movable turntable, which is far away from the crushing turntable, is provided with a positioning mechanism, the bottom of the tank body is provided with a filter screen, and the inner side of the filter screen is connected with the crushing turntable. The movable turntable is matched with the movable turntable on one side in a rotating way, carbon powder between the movable turntable and the movable turntable is processed, the movable turntable is also obliquely arranged relative to the inner wall of the tank body, and the movable turntable is static relative to the tank body through the positioning mechanism, so that the crushing turntable moves annularly along one side of the movable turntable, and the crushing of the carbon powder by multilayer uniform extrusion is facilitated.
The crushing carousel includes connecting sleeve, connecting sleeve's inner wall is connected with power bull stick, connecting sleeve's outer wall is provided with power carousel, the through-hole has been seted up to one side of power carousel, power carousel's outer wall is provided with fixed lug. Through the through hole of power carousel one side, the internal carbomorphism mud of jar of being convenient for flows to power carousel both sides, and the uniform processing of carbomorphism mud is carried out to the crushing screening plant of being convenient for.
The positioning mechanism comprises a positioning sleeve, the inner wall of the positioning sleeve is connected with the power rotating rod, a sliding groove is formed in the outer wall of the positioning sleeve, a telescopic sleeve is arranged on the outer wall of the positioning sleeve, and a spring is arranged on the inner wall of the telescopic sleeve. The spout is provided with a plurality of, and adjacent spout's same end intercommunication, and positioning sleeve's inner wall passes through fixture block and spout joint, when smashing the carousel and rotates, because smashing the carousel slope setting, one side of smashing the carousel promotes movable carousel and slides along the spout, compression spring simultaneously, rotates at smashing the carousel simultaneously and produces rotation friction to movable carousel, and the notch small-angle rotation that movable carousel was passed through the same end intercommunication of spout promotes the powdered carbon to the filter screen on, reduces the residue of powdered carbon crack on one side of the movable carousel simultaneously.
The movable turntable comprises a limiting sleeve, the inner wall of the limiting sleeve is connected with the positioning sleeve in a clamping mode through a sliding groove, the outer wall of the limiting sleeve is provided with an extrusion turntable, and the outer wall of the extrusion turntable is provided with an extrusion lug. Extrusion lug and fixed lug parallel arrangement, crushing carousel rotate the time, extrusion lug takes place to extrude with fixed lug, extrusion lug and fixed lug all set up through the fillet simultaneously, after extrusion lug extrudees with fixed lug, produces the vibration to the surface of movable carousel and crushing carousel, reduces the gluey of gluing of powdered carbon, improves crushing screening plant's self-cleaning ability.
The screening mechanism comprises a box body, the box body is connected with a tank body, a hopper is arranged at the bottom of the box body, a material distributing opening is formed in one side of the box body, a vibrating screen module is arranged on the other side of the box body, and a screen distributing net is arranged on the inner wall of the box body. The charcoal powder through the filter screen drops to on dividing the screen cloth, divides the screen cloth to set up to the arc, and divides the screen cloth to set up about the horizontal plane slope, shakes through the sieve module and divides the screen cloth and sieve the charcoal powder on the screen cloth, divides the screen cloth to be provided with two, distributes about the inner wall of box from top to bottom, and two inclination of dividing the screen cloth are crisscross to be set up, collect the charcoal powder through dividing the feed inlet, carry out recycle according to the charcoal powder of different mesh numbers afterwards.
Compared with the prior art, the invention has the following beneficial effects:
1. through sewage treatment plant, mud dehydration device, mud degree of depth dehydration device, mud desiccation device, mud carbomorphism device and crushing screening plant's setting, reduce mud moisture content, improve the calorific value of mud, reduce rear end desiccation carbomorphism scale, reduce investment and running cost, reduce the carbon emission level of construction process and operation process, can effectively retrieval and utilization carbomorphism product, can regard as the carbon source in the sewage treatment process, also regard as the skeleton agent in the high-pressure belt machine dehydration process and the required fuel of desiccation carbomorphism process, realize the inside cyclic utilization of powdered carbon, reduce carbon emission.
2. Through the setting of the deep dehydration device of the sludge, the discharge of water in the sludge is accelerated, the sludge drainage efficiency is improved, the wall breaking of the extracellular polymer of the sludge is realized by uniformly mixing the sludge with a conditioner and a framework agent, the intracellular water is released, the incompressibility of the sludge is improved, and the device is convenient for subsequent carbonization treatment of the sludge.
3. Through smashing screening plant's setting, improved crushing efficiency to carbonized sludge, practiced thrift staff's operating time, crushing carousel rotates and produces rotation friction to movable carousel, the notch small-angle rotation of movable carousel through the same end intercommunication of spout promotes the charcoal powder of jar body bottom to the filter screen on, reduces simultaneously that the charcoal powder is at the residue of movable carousel one side crack, after extrusion lug and fixed lug extrusion, produces the vibration to the surface of movable carousel and crushing carousel, reduces the gluey of gluing of charcoal powder, improves this device's self-cleaning ability.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic flow chart of a sludge drying and carbonizing method of the invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic diagram of a sludge conditioning module according to the present invention;
FIG. 4 is a schematic view of the dewatering module of the high-pressure belt machine of the present invention;
FIG. 5 is a schematic view of the stirring shaft structure of the invention;
FIG. 6 is a schematic view of the pulverizing and screening apparatus of the present invention;
FIG. 7 is a schematic diagram of the front view of the pulverizing and screening apparatus of the present invention;
FIG. 8 is a schematic view of a front cross-sectional structure of a pulverizing and screening apparatus of the present invention;
FIG. 9 is a schematic side cross-sectional view of a pulverizing and screening apparatus of the present invention;
FIG. 10 is a schematic view of the connection between the movable turntable and the power rotating rod of the crushing and screening device;
FIG. 11 is a schematic cross-sectional view of a movable turntable of the crushing and screening device of the present invention;
FIG. 12 is a schematic view of the power rotating rod structure of the crushing and screening device of the present invention;
fig. 13 is an enlarged view of fig. 11 at a in accordance with the present invention.
In the figure:
1. a sewage treatment device;
2. A sludge primary dewatering device;
3. a sludge deep dehydration device; 301. a sludge conditioning module; 3011. a feed inlet; 3012. a medicine adding port; 3013. a stirring shaft; 30131. a right stirring shaft; 30132. a left stirring shaft; 30133. a right stirring blade; 30134. left stirring blades; 3014. a U-shaped cylinder; 3015. a discharge port; 302. a high-pressure belt machine dehydration module; 3021. a feed inlet; 3022. a triaxial material distribution device; 30231. a filter cloth tensioning device is arranged on the upper filter cloth; 30232. a lower filter cloth tensioning device; 30241. a filter cloth deviation correcting device is arranged; 30242. a lower filter cloth deviation correcting device; 30251. a filter cloth cleaning device; 30252. a lower filter cloth cleaning device; 3026. a filter pressing roller device; 3027. a filter cloth driving device; 30281. the filter cloth is arranged; 30282. a lower filter cloth;
4. a sludge drying device;
5. a sludge carbonizing device;
6. crushing and screening device; 601. a crushing mechanism; 60101. a tank body; 60102. a feed hopper; 60103. a motor; 60104. a power rotating rod; 60105. crushing a rotary table; 601051, connecting sleeve; 601052, power turntable; 601053, through holes; 601054, fixing lugs; 60106. a positioning mechanism; 601061, positioning sleeve; 601062, chute; 601063, telescoping sleeve; 601064, springs; 60107. a movable turntable; 601071, limit sleeve; 601072, extrusion turntable; 601073, pressing the bumps; 60108. a filter screen; 602. a screening mechanism; 60201. a case; 60202. discharging a hopper; 60203. a material distributing port; 60204. a vibrating screen module; 60205. and (5) a material distributing screen.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-13, the present invention provides the following technical solutions:
the sludge drying and carbonizing method with the deep dehydration function comprises the following steps of:
s1, sewage treatment;
s2, dehydrating sludge;
s3, drying sludge;
s4, carbonizing sludge;
s5, crushing and screening.
The step S1 comprises the following specific steps:
s101, treating sewage by adopting a biological method, a biomembrane method or an anaerobic biological method, settling sludge in the sewage, reducing the content of the sludge in the sewage, and then carrying out centralized treatment on the sludge at the bottom of the sewage;
the step S3 comprises the following specific steps:
s301, performing direct or indirect heat exchange on the sludge by utilizing high-temperature low-humidity air, performing drying treatment on the sludge treated in the step S2, performing drying combustion on the sludge by a sludge drying device, forming high-temperature low-humidity air by combustion, performing direct or indirect heat exchange on the high-temperature low-humidity air and the sludge treated by a high-pressure belt machine dehydration module in a drying furnace, and increasing the temperature of the dried sludge and reducing the water content;
Step S4 comprises the following specific steps:
s401, directly or indirectly transferring heat between the high-temperature low-oxygen or oxygen-free gas and the sludge dried in the step S301 in a carbonization furnace to realize carbonization of the sludge, wherein the sludge carbonization device comprises a sludge carbonization burner, a carbonization furnace and a tail gas treatment device, the burner is high-temperature resistant in heating color number of the dried sludge, the carbonization furnace reduces the oxygen content of the sludge combustion environment to form a low-oxygen carbonization environment, and the tail gas treatment device is used for treating harmful gas generated by carbonization of the sludge;
step S5 comprises the following specific steps:
s501, crushing a sludge carbonized solid product, screening according to different mesh requirements, fully crushing carbonized sludge, screening carbon powder into different mesh numbers, and recycling according to the mesh numbers of the carbon powder.
In a first embodiment of the present invention,
the step S2 comprises the following specific steps:
s201, dehydrating sludge precipitated from sewage, adding a flocculating agent into the sludge, reducing the water content of the sludge from about 99% to about 80%, wherein the flocculating agent is Polyacrylamide (PAM), and primarily dehydrating a water body in the sludge;
s202, adding a conditioner into the sludge treated in the step S201, and uniformly mixing the sludge and the conditioner;
S203, dehydrating the sludge treated in the step S202, and reducing the water content of the sludge from about 80% to 65% -70% without adding carbon powder.
In a second embodiment of the present invention,
the step S2 comprises the following specific steps:
s201, dehydrating sludge precipitated from sewage, adding a flocculating agent into the sludge, reducing the water content of the sludge from about 99% to about 80%, wherein the flocculating agent is Polyacrylamide (PAM), primarily dehydrating a water body in the sludge, and reducing the working pressure and the workload of subsequent processing;
s202, adding a conditioner and a framework agent into the sludge treated in the step S201, uniformly mixing the sludge with the conditioner and the framework agent, and uniformly mixing the sludge with the conditioner and the framework agent through a sludge conditioning module to realize wall breaking of Extracellular Polymeric Substances (EPS) of the sludge, release intracellular water and improve the incompressibility of the sludge;
s203, dehydrating the sludge treated in the step S202, and simultaneously adding carbon powder to reduce the water content of the sludge from about 80% to 55% -60%.
The sludge treatment device with the deep dehydration function comprises a sewage treatment device 1, a sludge primary dehydration device 2, a sludge treatment device 3, a sludge drying device 4, a sludge carbonization device 5 and a crushing and screening device 6;
The sludge deep dehydration device 3 comprises a sludge conditioning module 301 and a high-pressure belt machine dehydration module 302, wherein the sludge conditioning module 301 is connected with the dehydration device 2 on one side, the high-pressure belt machine dehydration module 302 is connected with the other side of the sludge conditioning module 301, and the bottom of the high-pressure belt machine dehydration module 302 is connected with the sludge drying device 4;
one side of the sludge primary dewatering device 2 is provided with a sewage treatment device 1, the other side of the sludge primary dewatering device 2 is provided with a sludge deep dewatering device 3, the sludge deep dewatering device 3 is positioned on one side of a sludge drying device 4, one side of the sludge drying device 4, which is far away from the sludge deep dewatering device 3, is provided with a sludge carbonization device 5, a crushing and screening device 6 is positioned on one side of the sludge carbonization device 5, a transmission belt is arranged between the crushing and screening device 6 and the sludge carbonization device 5, and the sludge carbonization device 5 sends carbonized sludge into the crushing and screening device 6 through the transmission belt.
The sludge conditioning module 301 comprises a U-shaped barrel 3014, a feed port 3011 is arranged at the top of the U-shaped barrel 3014, a dosing port 3012 is arranged at one side of the feed port 3011, a stirring shaft 3013 is arranged on the inner wall of the U-shaped barrel 3014, the stirring shaft 3013 comprises a right stirring shaft 30131 and a left stirring shaft 30132, a right stirring blade 30133 is arranged at one end of the right stirring shaft 30131, and a left stirring blade 30134 is arranged at one end of the left stirring shaft 30132;
The high-pressure belt machine dehydration module 302 comprises a feed inlet 3021, a triaxial material distribution device 3022 is arranged at the bottom of the feed inlet 3021, a lower filter cloth tensioning device 30232 is arranged at the bottom of the triaxial material distribution device 3022, a lower filter cloth deviation correcting device 30242 is arranged at one side of the lower filter cloth tensioning device 30232, an upper filter cloth tensioning device 30231 is arranged at the top of the lower filter cloth deviation correcting device 30242, an upper filter cloth deviation correcting device 30241 is arranged at one side of the upper filter cloth tensioning device 30231, an upper filter cloth cleaning device 30251 is arranged at one side of the upper filter cloth deviation correcting device 30241 away from the upper filter cloth tensioning device 30231, a lower filter cloth cleaning device 30252 is arranged at one side of the lower filter cloth deviation correcting device 30242 away from the lower filter cloth tensioning device 30232, a filter press roller device 3026 is arranged at the bottom of the upper filter cloth cleaning device 30251, a filter cloth driving device 3027 is arranged at the top of the upper filter cloth cleaning device 30251, and an upper filter cloth 30281 and a lower filter cloth 30282 are wound on the outer wall of the filter press roller device 3026;
the sludge enters the U-shaped barrel 3014, the stirring shaft 3013 is driven to rotate by the driving device, the sludge, the conditioner and the framework agent are uniformly mixed, the mixed mixture is conveyed to a sludge outlet, the stirring shaft 3013 is positioned in the U-shaped barrel 3014, and the stirring shaft 3013 is connected with the driving device through a shaft coupling, so that the drainage efficiency of the sludge is improved;
The high-pressure belt machine dehydration module 302 can realize the uniform distribution of sludge in the width direction of the filter cloth on one hand, and form a filter cloth-sludge-filter cloth sandwich structure; on the other hand, the forward and tangential two-dimensional filter pressing of the sludge clamped in the middle of the filter cloth is realized through the rotation of the roller and the application of the tension of the filter cloth, so that the water content of the sludge is reduced from about 80% to 55% -60%;
the sludge uniform distribution device is positioned below the sludge feeding port, a triaxial design is adopted, the sludge is uniformly distributed on the effective width of the lower filter cloth 30282, the upper filter cloth deviation correcting device and the lower filter cloth deviation correcting device are positioned between the upper filter cloth cleaning device and the lower filter cloth tensioning device, and the automatic detection and automatic deviation correcting of the filter cloth are realized through photoelectric signals and extension and retraction movements of the air cylinder.
The filter cloth tensioning device is positioned in front of the sludge feeding port to ensure that the sludge enters the upper filter cloth and the lower filter cloth and forms a sandwich structure to keep tension; the upper filter cloth filter pressing roller device and the lower filter cloth filter pressing roller device are staggered up and down or left and right, a sandwich formed by the upper filter cloth and the lower filter cloth and the sludge passes through the filter cloth filter pressing roller device to form S-shaped arrangement, and the sludge is subjected to forward pressure and tangential shear force converted from the tension of the filter cloth, so that the sludge is dehydrated and reduced; the upper filter cloth and lower filter cloth cleaning device is located between the upper filter cloth cleaning device and the lower filter cloth filter pressing roller device, the upper and lower driving roller shafts are driven by the gear motor to drive the upper and lower filter cloths to move, the upper and lower filter cloth cleaning device is located between the upper and lower filter cloth driving device and the upper and lower filter cloth deviation correcting device, the upper and lower filter cloths are flushed in real time through nozzle arrangement of fan-shaped water outlet, the cleanliness of the filter cloths is guaranteed, and accordingly the sludge dewatering and decrement effects are guaranteed.
The triaxial distributing device 3022 consists of a distributing device, a roller shaft and a motor, wherein the outer wall of the roller shaft is attached to the distributing device, an output shaft of the motor is connected with a central rotating rod of the roller shaft, and the motor is started to drive the roller shaft to rotate for conveying sludge;
the upper filter cloth tensioning device 30231 and the lower filter cloth tensioning device 30232 are composed of filter cloth, a roll shaft and a hydraulic cylinder, the outer wall of the roll shaft is attached to the filter cloth, two ends of the roll shaft are connected with the output end of the hydraulic cylinder, and the tensioning degree of the filter cloth and the outer wall of the roll shaft is adjusted through the telescopic hydraulic cylinder;
the upper filter cloth deviation correcting device 30241 and the lower filter cloth deviation correcting device 30242 are composed of filter cloth, sensors, a hydraulic cylinder and a roll shaft, wherein the filter cloth is wound on the outer wall of the roll shaft, the hydraulic cylinder is arranged at two ends of the roll shaft, the sensors are arranged at two ends of the roll shaft, the positions of the filter cloth rotating on the roll shaft are detected through the sensors, and after the filter cloth deflects towards one end of the roll shaft, the telescopic hydraulic cylinder drives the roll shaft to deflect, so that the positions of the filter cloth on the roll shaft are adjusted;
the upper filter cloth cleaning device 30251 and the lower filter cloth cleaning device 30252 are composed of a water pump, a spray head and a water tank, water is stored in the water tank, the top of the water tank is communicated with the water pump, one end of the water pump is connected with the spray head, the water pump sprays the water in the water tank out of the spray head, and the filter cloth is washed through the spray head;
The filter pressing roller device 3026 consists of a roller shaft and filter cloth, wherein a plurality of roller shafts are arranged in a staggered manner, the filter cloth is wound on the outer wall of the roller shaft in a staggered manner, two filter cloths are wound on the same side of the same roller shaft, so that an included angle is formed between the two filter cloths, sludge is put between the two filter cloths, and the sludge between the two filter cloths is subjected to filter pressing by rotating the roller shaft;
the filter cloth driving device 3027 is composed of a motor and a roll shaft, an output shaft of the motor is connected with a central shaft of the roll shaft, and the roll shaft is driven to rotate by starting the motor to provide power for the filter pressing roller device 2026.
Crushing and screening device 6 includes crushing mechanism 601 and screening mechanism 602, the bottom of crushing mechanism 601 is connected with screening mechanism 602, crushing mechanism 601 includes a jar body 60101, the bottom of jar body 60101 is connected with screening mechanism 602, the top of jar body 60101 is provided with feeder hopper 60102, one side of jar body 60101 is provided with motor 60103, the output shaft of motor 60103 is provided with power bull stick 60104, power bull stick 60104 is connected with jar body 60101 inner wall, the one end of bull stick 60104 is provided with crushing carousel 60105, one side of crushing carousel 60105 is provided with movable carousel 60107. The motor 60103 drives the power rotating rod 60104 to rotate, so that the power rotating rod 60104 drives the crushing rotating disc 60105 to rotate along the inner wall of the tank body 60101, the crushing rotating disc 60105 is attached to the inner wall of the tank body 60101, and meanwhile the crushing rotating disc 60105 is obliquely arranged relative to the power rotating rod 60104, and the crushing rotating disc 60105 can lift carbon powder deposited at the bottom of the tank body 60101 during rotation, so that the full crushing processing of carbonized sludge is ensured.
One side of the movable rotary table 60107, which is far away from the crushing rotary table 60105, is provided with a positioning mechanism 60106, the bottom of the tank body 60101 is provided with a filter screen 60108, and the inner side of the filter screen 60108 is connected with the crushing rotary table 60105. Through smashing movable carousel 60107 of carousel 60105 normal running fit one side, with the powdered carbon between movable carousel 60107 and the movable carousel 60107 processing, movable carousel 60107 also sets up with respect to the inner wall slope of jar body 60101, and movable carousel 60107 is static with respect to jar body 60101 through positioning mechanism 60106 for smashing carousel 60105 along movable carousel 60107 one side annular movement, be convenient for to the even extrusion crushing of multistage to powdered carbon.
Crushing carousel 60105 includes connecting sleeve 601051, and connecting sleeve 601051's inner wall is connected with power bull stick 60104, and connecting sleeve 601051's outer wall is provided with power carousel 601052, and through-hole 601053 has been seted up to one side of power carousel 601052, and power carousel 601053's outer wall is provided with fixed lug 601054. Through the through hole 601053 on one side of the power turntable 601052, carbonized sludge in the tank 60101 flows to two sides of the power turntable 601052 conveniently, and the carbonized sludge is uniformly processed by the crushing and screening device conveniently.
The positioning mechanism 60106 comprises a positioning sleeve 601061, the inner wall of the positioning sleeve 601061 is connected with a power rotating rod 60104, a sliding groove 601062 is formed in the outer wall of the positioning sleeve 601061, a telescopic sleeve 601063 is arranged on the outer wall of the positioning sleeve 601061, and a spring 601064 is arranged on the inner wall of the telescopic sleeve 601063. The spout 601062 is provided with a plurality of, the same end intercommunication of adjacent spout 601062, the inner wall of positioning sleeve 601061 passes through fixture block and spout 601062 joint, when smashing carousel 60105 and rotates, because smashing carousel 60105 slope setting, smashing one side of carousel 60105 and promoting movable carousel 60107 and slide along spout 601062, compression spring 601064 simultaneously, simultaneously rotate at smashing carousel 60105 and produce the rotation frictional force to movable carousel 60107, the notch small-angle rotation of movable carousel 60107 through the same end intercommunication of spout 601062 promotes the charcoal powder to on the filter screen 60108, reduce the residue of charcoal powder crack in movable carousel 60107 one side simultaneously.
The movable turntable 60107 comprises a limit sleeve 601071, the inner wall of the limit sleeve 601071 is clamped with a positioning sleeve 601061 through a sliding groove 601062, the outer wall of the limit sleeve 601071 is provided with an extrusion turntable 601072, and the outer wall of the extrusion turntable 601072 is provided with an extrusion lug 601073. Extrusion lug 601073 and fixed lug 601054 parallel arrangement, crushing carousel 60105 rotates, and extrusion lug 601073 takes place the extrusion with fixed lug 601054, and extrusion lug 601073 and fixed lug 601054 all pass through the fillet setting simultaneously, and after extrusion lug 601073 and fixed lug 601054 extrusion, the surface to movable carousel 60107 and crushing carousel 60105 produces the vibration, reduces the sticky of powdered carbon, improves crushing screening plant's self-cleaning ability.
Screening mechanism 602 includes box 60201, and box 60201 is connected with jar body 60101, and the bottom of box 60201 is provided with ejection of compact fill 60202, and one side of box 60201 is provided with feed opening 60203, and the opposite side of box 60201 is provided with shakes sieve module 60204, and the inner wall of box 60201 is provided with divides screen cloth 60205. The charcoal powder through filter screen 60108 drops to divide screen 60205 on, divides screen 60205 to set up to the arc, and divides screen 60205 to set up with respect to the horizontal plane slope, shakes through shaking screen module 6024 and divides screen 60205 and sieves the charcoal powder on the minute screen 60205, divides screen 60205 to be provided with two, distributes about the inner wall of box 60201 from top to bottom, and two inclination of dividing screen 60205 are crisscross to be set up, collects the charcoal powder through dividing feed inlet 60201, carries out recycle according to the charcoal powder of different mesh numbers afterwards.
The working principle of the invention is as follows:
firstly, sewage is injected into a sewage treatment device 1, the sewage is treated by adopting a biological method, a biomembrane method or an anaerobic biological method, sludge is precipitated from the sewage, then the sludge is led into a sludge primary dewatering device 2 for primary dewatering, the sludge precipitated from the sewage is dewatered, and a flocculating agent is added into the sludge to reduce the water content of the sludge from about 99% to about 80%;
the sludge subjected to preliminary dehydration is then guided into a sludge deep dehydration device 3, sludge is uniformly mixed with a conditioner and a framework agent through a sludge conditioning module 301 in the sludge deep dehydration device 3, so that wall breaking of Extracellular Polymer (EPS) of the sludge is realized, intracellular water is released, and then the sludge uniformly mixed with the conditioner and the framework agent is poured into a high-pressure belt machine dehydration module 302, so that on one hand, the uniform distribution of the sludge in the width direction of a filter cloth can be realized, and a filter cloth-sludge-filter cloth sandwich structure is formed; on the other hand, forward and tangential two-dimensional filter pressing of the sludge clamped in the middle of the filter cloth is realized through the rotation of the roller and the application of the tension of the filter cloth, so that the water content of the sludge is reduced from about 80% to 55% -60% (65% -70% of carbon powder is not added), then the sludge is poured into a drying device 4 through a transfer device, the treated sludge is subjected to drying treatment by utilizing high-temperature low-humidity air to directly or indirectly exchange heat with the sludge, the dried sludge is poured into a sludge carbonization device 5 through the transfer device, and the sludge is subjected to direct or indirect heat transfer in a carbonization furnace after being dried by utilizing high-temperature low-oxygen or oxygen-free gas, so that the sludge carbonization is realized;
Finally, carbonized sludge is poured into a crushing and screening device 6, a power rotating rod 60104 is driven to rotate through a motor 60103, so that the power rotating rod 60104 drives a crushing rotating disc 60105 to rotate along the inner wall of a tank body 60101, the crushing rotating disc 60105 is attached to the inner wall of the tank body 60101, meanwhile, the crushing rotating disc 60105 is obliquely arranged relative to the power rotating rod 60104, the crushing rotating disc 60105 can lift carbon powder deposited at the bottom of the tank body 60101 during rotation, full crushing processing of carbonized sludge is guaranteed, carbon powder between the movable rotating disc 60107 and the movable rotating disc 60107 is processed through the movable rotating disc 60107 on one side in a rotating mode, the movable rotating disc 60107 is obliquely arranged relative to the inner wall of the tank body 60101 through a positioning mechanism 60106, the movable rotating disc 60105 is enabled to annularly move along one side of the movable rotating disc 60107, and multi-layer uniform extrusion and crushing of the carbon powder are facilitated;
through the through hole 601053 on one side of the power turntable 601052, carbonized sludge in the tank body 60101 flows to two sides of the power turntable 601052, the carbonized sludge is convenient to uniformly process by the crushing and screening device, a plurality of slide grooves 601062 are formed, the same ends of adjacent slide grooves 601062 are communicated, the inner wall of the positioning sleeve 601061 is clamped with the slide grooves 601062 through clamping blocks, when the crushing turntable 60105 rotates, as the crushing turntable 60105 is obliquely arranged, one side of the crushing turntable 60105 pushes the movable turntable 60105 to slide along the slide grooves 601062, simultaneously compresses the springs 601064, simultaneously generates rotating friction force on the movable turntable 60107 when the crushing turntable 60105 rotates, the movable turntable 60107 rotates at a small angle through a notch communicated with the same end of the slide grooves 601062, pushes carbon powder to the filter screen 60108, meanwhile, residues of the carbon powder on a crack on one side of the movable turntable 60107 are reduced, the pressing bumps 601073 are arranged in parallel with the fixed bumps 601054, when the crushing turntable 60105 rotates, the pressing bumps 601073 are pressed with the fixed bumps 601054, meanwhile, the pressing bumps 601073 are arranged with the fixed bumps 601054 through round corners, after the pressing bumps 601073 and the fixed bumps 601054 are pressed, the self-cleaning vibration of the crushing turntable 60105 is reduced, and the vibration-cleaning force of the crushing turntable is improved;
The charcoal powder through filter screen 60108 drops to divide screen 60205 on, divides screen 60205 to set up to the arc, and divides screen 60205 to set up with respect to the horizontal plane slope, shakes through shaking screen module 6024 and divides screen 60205 and sieves the charcoal powder on the minute screen 60205, divides screen 60205 to be provided with two, distributes about the inner wall of box 60201 from top to bottom, and two inclination of dividing screen 60205 are crisscross to be set up, collects the charcoal powder through dividing feed inlet 60201, carries out recycle according to the charcoal powder of different mesh numbers afterwards.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A sludge drying and carbonizing method with deep dehydration function is characterized in that: the sludge drying and carbonizing method comprises the following steps:
s1, sewage treatment;
s2, dehydrating sludge;
s3, drying sludge;
s4, carbonizing sludge;
s5, crushing and screening.
2. The sludge drying and carbonizing method with deep dehydration function according to claim 1, wherein the method is characterized in that:
the step S1 comprises the following specific steps:
s101, treating sewage by adopting a biological method, a biomembrane method or an anaerobic biological method to enable sludge to be deposited at the bottom in the sewage;
the step S3 comprises the following specific steps:
s301, performing direct or indirect heat exchange with the sludge by utilizing high-temperature low-humidity air, and performing drying treatment on the sludge treated in the step S2;
Step S4 comprises the following specific steps:
s401, directly or indirectly transferring heat to the sludge dried in the step S301 in a carbonization furnace by utilizing high-temperature low-oxygen or oxygen-free gas to realize carbonization of the sludge;
step S5 comprises the following specific steps:
s501, crushing the sludge carbonized solid product, and screening according to different mesh requirements.
3. The sludge drying and carbonizing method with deep dehydration function according to claim 2, wherein the method is characterized in that:
the step S2 comprises the following specific steps:
s201, dehydrating the sludge precipitated by sewage, adding a flocculating agent into the sludge, and reducing the water content of the sludge from about 99% to about 80%;
s202, adding a conditioner and a framework agent into the sludge treated in the step S201, and uniformly mixing the sludge with the conditioner and the framework agent;
s203, dehydrating the sludge treated in the step S202, and simultaneously adding carbon powder to reduce the water content of the sludge from about 80% to 55% -60%.
4. The sludge drying and carbonizing method with deep dehydration function according to claim 2, wherein the method is characterized in that:
the step S2 comprises the following specific steps:
s201, dehydrating the sludge precipitated by sewage, adding a flocculating agent into the sludge, and reducing the water content of the sludge from about 99% to about 80%;
S202, adding a conditioner into the sludge treated in the step S201, and uniformly mixing the sludge and the conditioner;
s203, dehydrating the sludge treated in the step S202, and reducing the water content of the sludge from about 80% to 65% -70% without adding carbon powder.
5. The utility model provides a sludge treatment device of subsidiary degree of depth dehydration function, includes sewage treatment plant (1), sludge primary dewatering device (2), sludge drying device (4) and mud carbomorphism device (5), its characterized in that:
the sludge treatment device comprises a sludge deep dehydration device (3) and a crushing and screening device (6);
the sludge deep dehydration device (3) comprises a sludge conditioning module (301) and a high-pressure belt machine dehydration module (302), wherein one side of the sludge conditioning module (301) is connected with an outlet of the sludge primary dehydration device (2), the other side of the sludge conditioning module (301) is connected with an outlet of the high-pressure belt machine dehydration module (302), and an outlet of the high-pressure belt machine dehydration module (302) is connected with a sludge drying device (4);
one side of the sludge primary dewatering device (2) is provided with a sewage treatment device (1), the other side of the sludge primary dewatering device (2) is provided with a sludge deep dewatering device (3), the sludge deep dewatering device (3) is located on one side of the sludge drying device (4), one side, far away from the sludge deep dewatering device (3), of the sludge drying device (4) is provided with a sludge carbonization device (5), the crushing and screening device (6) is located on one side of the sludge carbonization device (5), a conveying belt is arranged between the crushing and screening device (6) and the sludge carbonization device (5), and the sludge carbonization device (5) sends carbonized sludge into the crushing and screening device (6) through the conveying belt.
6. The sludge treatment apparatus with deep dewatering function according to claim 5, wherein: the sludge conditioning module (301) comprises a U-shaped barrel (3014), a charging port (3011) is arranged at the top of the U-shaped barrel (3014), a dosing port (3012) is arranged at one side of the charging port (3011), a stirring shaft (3013) is arranged on the inner wall of the U-shaped barrel (3014), the stirring shaft (3013) comprises a right stirring shaft (30131) and a left stirring shaft (30132), a right stirring blade (30133) is arranged at one end of the right stirring shaft (30131), and a left stirring blade (30134) is arranged at one end of the left stirring shaft (30132);
the high-pressure belt machine dehydration module (302) comprises a feeding port (3021), a triaxial distributing device (3022) is arranged at the bottom of the feeding port (3021), a lower filter cloth tensioning device (30232) is arranged at the bottom of the triaxial distributing device (3022), a lower filter cloth deviation rectifying device (30242) is arranged at one side of the lower filter cloth tensioning device (30232), an upper filter cloth tensioning device (30231) is arranged at the top of the lower filter cloth deviation rectifying device (30242), an upper filter cloth deviation rectifying device (30241) is arranged at one side of the upper filter cloth tensioning device (30231), an upper filter cloth cleaning device (30251) is arranged at one side of the upper filter cloth deviation rectifying device (30241) away from the upper filter cloth tensioning device (30231), a lower filter cloth cleaning device (30252) is arranged at one side of the lower filter cloth deviation rectifying device (30242) away from the lower filter cloth tensioning device (30232), a filter cloth roller device (3026) is arranged at the bottom of the upper filter cloth cleaning device (30251), a filter cloth driving device (3027) is arranged at the top of the upper filter cloth cleaning device (30251), and a filter cloth (5681) is wound on the outer wall of the filter cloth (3026).
7. The sludge treatment apparatus with deep dewatering function according to claim 5, wherein: crushing screening plant (6) is including crushing mechanism (601) and screening mechanism (602), the bottom of crushing mechanism (601) is connected with screening mechanism (602), crushing mechanism (601) are including jar body (60101), the bottom of jar body (60101) is connected with screening mechanism (602), the top of jar body (60101) is provided with feeder hopper (60102), one side of jar body (60101) is provided with motor (60103), the output shaft of motor (60103) is provided with power bull stick (60104), power bull stick (60104) are connected with jar body (60101) inner wall, the one end of bull stick (60104) is provided with crushing carousel (60105), one side of crushing carousel (60105) is provided with movable carousel (60107).
8. The sludge treatment apparatus with deep dewatering function according to claim 7, wherein: one side of movable carousel (60107) keeping away from crushing carousel (60105) is provided with positioning mechanism (60106), the bottom of jar body (60101) is provided with filter screen (60108), the inboard of filter screen (60108) is connected with crushing carousel (60105).
9. The sludge treatment apparatus with deep dewatering function according to claim 7, wherein: crushing carousel (60105) includes connecting sleeve (601051), the inner wall of connecting sleeve (601051) is connected with power bull stick (60104), the outer wall of connecting sleeve (601051) is provided with power carousel (601052), through-hole (601053) have been seted up to one side of power carousel (601052), the outer wall of power carousel (601053) is provided with fixed lug (601054), positioning mechanism (60106) include positioning sleeve (601061), the inner wall of positioning sleeve (601061) is connected with power bull stick (60104), spout (601062) have been seted up to the outer wall of positioning sleeve (601061), the outer wall of positioning sleeve (601061) is provided with telescopic sleeve (601063), the inner wall of telescopic sleeve (601063) is provided with spring (601064), movable carousel (60107) include spacing sleeve (601071), the inner wall of spacing sleeve (601071) passes through spout (601062) and positioning sleeve (601061) joint, the outer wall of spacing sleeve (601061) is provided with extrusion carousel (601061), extrusion carousel (601061) is provided with extrusion lug (601061).
10. The sludge treatment apparatus with deep dewatering function according to claim 5, wherein: screening mechanism (602) is including box (60201), box (60201) are connected with jar body (60101), the bottom of box (60201) is provided with out hopper (60202), one side of box (60201) is provided with feed divider (60203), the opposite side of box (60201) is provided with shakes and sieves module (60204), the inner wall of box (60201) is provided with divides screen cloth (60205).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311490980.3A CN117285228A (en) | 2023-11-09 | 2023-11-09 | Sludge treatment device with deep dehydration function and drying carbonization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311490980.3A CN117285228A (en) | 2023-11-09 | 2023-11-09 | Sludge treatment device with deep dehydration function and drying carbonization method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117285228A true CN117285228A (en) | 2023-12-26 |
Family
ID=89258804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311490980.3A Pending CN117285228A (en) | 2023-11-09 | 2023-11-09 | Sludge treatment device with deep dehydration function and drying carbonization method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117285228A (en) |
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2023
- 2023-11-09 CN CN202311490980.3A patent/CN117285228A/en active Pending
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