CN107935354A - Sewage sludge continuous band and the complete processing system of heat pump desiccation and processing method - Google Patents
Sewage sludge continuous band and the complete processing system of heat pump desiccation and processing method Download PDFInfo
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- CN107935354A CN107935354A CN201610895320.7A CN201610895320A CN107935354A CN 107935354 A CN107935354 A CN 107935354A CN 201610895320 A CN201610895320 A CN 201610895320A CN 107935354 A CN107935354 A CN 107935354A
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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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of sewage sludge continuous band and the complete processing system of heat pump desiccation and processing method.The system comprises sludge storage silo, sludge transfer equipment, improved chemical feeding device, continuous band dehydration equipment, electric heating drying equipment and PLC automatic control system.Not only precise structure is compact, floor space is few for the system of the present invention, but also does not produce sludge in whole treated sewage sludge handling process and have bad luck, escaped without pernicious gas, and processing on-site sanitation is good；Importantly, often extracting 1 kg of water only consumes about 0.33 kilowatt of electric power, the sludge that is handled by the system, moisture content is reduced to less than 30%, sludge calorific value 1500kcal/kg and more than, the sludge of generation is suitable for power plants generating electricity.
Description
Technical field
The present invention relates to treatment of town sewage and sludge processing technology field, more particularly to a kind of sewage sludge continuous band and heat pump
The complete processing system of desiccation and processing method.
Background technology
Treatment of town sewage and sludge processing disposal mainly includes following several respects：Sludge stabilizing, minimizing, innoxious and resource
Change.Wherein, the minimizing of sludge is the core link of Treatment of Sludge, and main target is the moisture reduced in sludge；And sludge subtracts
The method of quantization has following several：Mechanical dehydration method, heat drying method etc., and during actual specific resistance to filtration, deposit
In the mode that kinds of processes is mutually combined.
Mechanical dehydration method includes chamber-type press filter, diaphragm filter press, belt filter press etc..Wherein with diaphragm filter press and band
Based on formula filter press, since sewage sludge viscosity is higher after biochemical treatment, moisture percentage in sewage sludge is about 80% after conventional press filtration.
Heat drying method includes direct heat drying and indirect heat drying.Direct heat drying generally use industrial furnace smoke is direct
Contact, thermal convection current heat exchange；Indirectly drying passes through heating agent (steam or conduction oil) mediate contact.Heat drying method can be by sewage sludge
Desiccation to moisture content is 10~40% or so, and reliable premise bar is provided for the innoxious and disposal of resources of sludge
Part.
The direct heat drying of sludge generally requires the flue gas using Industrial Stoves, and needs larger exhaust gas volumn, therefore this
Kind method is subject to the resource constraint of ambient conditions bigger, and the flue gas after direct heat transfer often contains a certain amount of smelly property gas
Body, deodorization difficulty are larger；The heat of the indirect heat drying consumption of sludge is higher, and the sludge that moisture content is 80% is reduced to moisture content
For 40% when, generally require the saturated vapor (0.5MPa, 153 DEG C) of 0.8~1t of consumption or so, actual motion is costly.
The Chinese patent of Application No. 201010152993.6 disclose a kind of quenched desiccation of the steam low-temperature thermally of sludge into
Cover system and method, the system using steam heating agent as quenched means, by moisture content 80~85% sludge be delivered to it is low
Warm in modifying device, pyrolytic reaction occurs with saturated vapor.This method leading portion needs to heat, and equally produces energy consumption.
The Chinese patent of Application No. 201010184793.9 discloses a kind of sludge dehydrating and drying process method, is specifically
Indirect dryer is rotated using hollow blade.But this method is in desiccation, hollow indirect rotary dryer is by 85%
When finished product sludge is sent into finished product area, 15% sludge is gone by feeding screw back to pre- desiccation, and the drying process of sludge needs
Want " back-mixing ".
The Chinese patent of Application No. 201010128916.7 discloses the dirt that a kind of powerful dehydration is combined with low temperature desiccation
Mud processing method, the flue gas that the residual temperature that steam power plant or cement plant discharge is 130~220 DEG C by this method, passes through airdoor control cigarette
Tolerance, is sent into Clothoid type sludge drying into particle device by air-introduced machine, carries out the process of desiccation or granulating.
With the raising of sewage treatment plant's treatment scale and processing depth, sludge yield constantly increases year by year, original dirt
Mud processing equipment and method cannot meet Treatment of Sludge demand, be mainly manifested in the following aspects：
(1) filter press technique is to sludge reduction degree deficiency：Moisture content is generally 80% after being in particular in filter press technique dehydration
Left and right, sludge reduction degree is inadequate, and dehydrated sludge solvent is still huge, is not easy to final disposal；Middle pressure membrane press filtration (work
It is 15~18bar to make pressure) press filtration can reduce moisture percentage in sewage sludge to 60%, but need to increase more conditioner (conditioning amount
30~50%/t DS), actually accomplish mud decrement dehydration 40%；
(2) after by conventional nurse one's health, sludge calorific value is told somebody what one's real intentions are, generally below 600kcal/kg, is unfavorable for burning disposal, therefore
Sludge after conditioning finally can only enter landfill yard disposal；
(3) indirect drying method generally usually requires 0.8~1.0t steam using steam as heating agent, one ton of sludge of desiccation
(0.6MPa, 160 DEG C), processing cost is high, and the sewage treatment plant such as municipal administration does not often possess steam resource, and heat drying condition does not have
It is standby；
(4) difference with traditional desiccation machine maximum is, traditional sludge drying machine produces high temperature with the substantial amounts of energy,
Sludge is dried again, and during long-living high temperature, the substantial amounts of energy or heat can be lost in neighbouring space, caused not
Necessary waste, while can also bring that energy consumption is excessive, the excessively high unnecessary problem of room temperature, high-temperature process can make sludge produce not
Necessary chemical action and the substantial amounts of foul smell of generation.
The content of the invention
For above-mentioned minimizing degree existing in the prior art deficiency, sludge calorific value is relatively low, energy consumption is excessive etc. asks
Topic, the purpose of the embodiment of the present invention are the provision of a kind of sewage sludge continuous band and the complete processing system of heat pump desiccation and place
Reason method.
In order to reach foregoing invention purpose, the embodiment of the present invention employs following technical solution：
A kind of sewage sludge continuous band and the complete processing system of heat pump desiccation, the system comprises sludge storage silo, dirt
Mud transmission equipment, improved chemical feeding device, continuous band dehydration equipment, electric heating drying equipment and PLC automatic control system：
The sludge storage silo is connected by pipeline with the sludge transfer equipment；
The sludge transfer equipment, improved chemical feeding device are connected with the continuous band dehydration equipment respectively, are realized
Wet mud is mixed with improved chemical in the continuous band dehydration equipment；
The continuous band dehydration equipment is connected with the electric heating drying equipment, realizes that sludge is dehydrated by the continuous band
Equipment is transferred to progress electric heating desiccation dehydration in the electric heating drying equipment；
The PLC automatic control system is set with the sludge transfer equipment, improved chemical feeding device, continuous band dehydration
Standby and electric heating drying equipment is electrically connected.
Correspondingly, a kind of sewage sludge continuous band and electric heating dry chemical conversion set processing method, using Sewage as described above
Mud continuous band and the complete processing system of heat pump desiccation handle treatment of town sewage and sludge, specifically include following steps；
(1) treatment of town sewage and sludge is put into sludge storage silo, moisture percentage in sewage sludge >=80%；
(2) improved chemical is added into the improved chemical storage silo；
(3) PLC automatic control system is started, PLC automatic control system automatically adjusts wet mud according to actual conditions
Transmission speed, the mixing efficiency of wet mud and improved chemical, continuous band dehydration equipment rate of water loss and adjust described in remove
The hot dry wind temperature stabilization of damp and hot pump discharge is at 50~60 DEG C；At the same time according to the dewatered sludge situation of monitoring, the crawler belt is adjusted
Transfer rate.
The sewage sludge continuous band and the complete processing system of heat pump desiccation that the above embodiment of the present invention provides, not only structure
Precision is compact, floor space is few, and does not produce sludge in whole treated sewage sludge handling process and have bad luck, escape without pernicious gas
Go out, processing on-site sanitation is good；Importantly, often extracting 1 kg of water only consumes about 0.33 kilowatt of electric power, at the system
The sludge of reason, moisture content are reduced to less than 30%, sludge calorific value 1500kcal/kg and more than, the sludge of generation is suitable for
Power plants generating electricity.
Sewage sludge continuous band and electric heating dry the chemical conversion set processing method that the above embodiment of the present invention provides, sewage sludge
Delivery is in pipeline, and no sludge has bad luck the environmental pollution phenomenon of generation, and processing adapts to various sewage sludges, system fortune
Row stability is high, and processing cost is relatively low, and improved chemical input amount is few, and the sludge calorific value of processing can be maintained at more than 90%, also
Can be energy-saving.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is sewage sludge continuous band provided in an embodiment of the present invention and the complete processing system schematic diagram of heat pump desiccation；
Fig. 2 is dehumidifying heat pump operation principle schematic diagram provided in an embodiment of the present invention；
Fig. 3 is the structure diagram of caterpillar belt structure in inventive embodiments embodiment；
Fig. 4 is the chain link track body schematic diagram of caterpillar belt structure in inventive embodiments embodiment；
Fig. 5 is plastic film structure schematic diagram in inventive embodiments embodiment.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of sewage sludge continuous band and the complete processing system of heat pump desiccation,
The system is by sludge storage silo 1, sludge transfer equipment 2, improved chemical feeding device 3, continuous band dehydration equipment 4, electric heating
Drying equipment 6 and PLC automatic control system are formed.
Wherein, sludge storage silo 1 is carbon steel cavity body structure, sinks to underground, and volume is 1.0~2.0d.
Preferably, 1 upper edge of sludge storage silo is equipped with the sludge inlet for being used for putting into city sewage and sludge, and sludge enters
The aperture position of mouth, so as to meeting that sludge storage silo 1 can realize maximum storage and not spill over subject to mud and sewage；This
Outside, 1 bottom of storage silo is equipped with sludge outlet, the setting position of the sludge outlet, so as to all sludge are arranged automatically
Based on going out, to avoid the sludge inside sludge storage silo 1 is overstock for a long time and cannot be discharged.
Preferably, the slide block mechanism for preventing that sludge from building bridge is installed in sludge storage silo 1.
Preferably, sludge transfer equipment 2 is made of double-shaft spiral conveyer and sludge pump.
It is further preferred that sludge pump is plunger pump, selected plunger pump continuous-stable is more preferable, and failure rate is low, resistance to
The problems such as wearing, a small amount of impurity (hair etc.) can be overcome, strong applicability.
Preferably, improved chemical feeding device 3 is made of improved chemical storehouse 31 and medicament transmission pipeline 32.
Continuous band dehydration equipment 4 is made of modified tempering device 41 and water-removing press 42.The water-removing press 42
Equipped with sludge outlet；The modified tempering device 41 is connected with the water-removing press 42 by pipeline.
Preferably, the modified tempering device 41 is a hermetically sealed can, and blender is provided with the hermetically sealed can, with realize by
The improved chemical and the uniform mixing of the wet mud conveyed by sludge transfer equipment 2 that improved chemical feeding device 3 conveys.
Preferably, sludge continuous band dehydration equipment 4 using closed pipe-line system, can effectively prevent spreading for material
Leakage and foul smell loss.
Electric heating drying equipment 6 is made of a closed chamber, is removed in the closed chamber at least provided with two crawler belts and one
Damp and hot pump, the rotation direction of two crawler belts is mutually reverse, and the transmission end of a crawler belt and the transmission for closing on crawler belt
Beginning is located at the same side；The dehumidifying heat pump makes the chamber of the electric heating drying equipment 6 form hot air circulation.
Preferably, the closed chamber is equipped with sludge inlet 61, dewatered sludge outlet 62, air inlet 63 and air outlet 64.
In a preferred embodiment, the crawler belt is two horizontal positioned and side by side up and down crawler belt 65-66；The electricity
The dehumidifying heat pump 67 of heat drying equipment 6.The air inlet 61, air outlet 62 are connected with dehumidifying heat pump 67 respectively.
Preferably, the rotation direction of two crawler belt 65-66 is mutually reverse, and the transmission end of first crawler belt 65 with
The transmission initiating terminal of Article 2 crawler belt 66 is located at the same side；The transmission initiating terminal of first crawler belt 65 is located at sludge inlet
The same side；The transmission end of the Article 2 crawler belt 66 is located at the same side with dewatered sludge outlet.First crawler belt 65 is close
Air outlet 62, Article 2 crawler belt 66 close to air inlet 61, that is, when sludge from sludge inlet by crawler belt toward dewatered sludge export
When direction is transported, the hot dry wind that air inlet 61 is blown into can be flowed from close to one lateral sludge inlet side of dewatered sludge outlet, so that
Realize the reverse movement of sludge and wind, removal effect of the hot wind to wet mud moisture can be effectively improved.
It is further preferred that as shown in figure 3, the crawler belt includes chain link track body 7 and plastic foil 8；The plastic foil 8
Join end to end to form annular membrane, be attached at the surface of chain link track body 7.
Specifically, plastic foil 8 here is attached at the surface of chain link track body 7, refers to being attached at chain link crawler belt sheet
Body 7 carries the surface of object.
As shown in Figure 4, it is preferable that the chain link track body 7 includes double-strand ring 71, and the double-strand ring 71 passes through steel pipe 72
Integral structure is attached, and stainless (steel) wire band 73 is equipped between double-strand ring 71, stainless (steel) wire band 73 is consolidated by steel pipe 72
Fixed support, so that stainless (steel) wire band 73 can support plastic foil 8.Chain link track body 7 is designed to net banded structure,
The area that the metal in chain link track body 7 is contacted with sludge is advantageously reduced, reduces the journey that chain link track body 7 is corroded
Degree, while net structure is conducive to lower airway.
As shown in figure 5, plastic foil 8 offers equally distributed through hole 81.
Preferably, the aperture of through hole 81 is 2~5mm, which can cause lower airway and effectively avoid sludge from falling
Enter the surface of chain track body 7, so as to reach the purpose of the present invention.
Preferably, plastic foil 8 is PTFE film.PTFE film chemical stability, corrosion resistance, leakproofness, high lubrication non-stick,
Electrical insulating property and good anti-aging endurance, for 7 surface of chain link track body, it is possible to prevente effectively from chain link track body 7 with
Sludge directly contacts, and causes sludge to be not easy to be adhered to the surface of plastic foil 8, mitigates crawler belt transmission burden.
It is further preferred that the thickness of plastic foil 8 is 1~3mm.Plastic foil 8 can effectively match work under the thickness
Journey demand, and reduce the consuming of plastic film material.
The sewage sludge continuous band and the complete processing system of heat pump desiccation further include PLC automatic control system.
Specifically, connected at the sludge outlet of the storage silo 1 by pipeline with sludge transfer equipment 2；
The sludge transfer equipment 2, improved chemical feeding device 3 are connected by pipeline and the modified tempering device 41 respectively
It is logical, realize mixing of the improved chemical with the wet mud of the storage silo 1 discharge in the modified tempering device 41；
Preferably, the position that the continuous band dehydration equipment 4 is connected with each other with the electric heating drying equipment 6 is equipped with sludge
Feeding device 5.The sludge outlet of the water-removing press 42 of continuous band dehydration equipment 4 is realized by the sludge feeding device 5
The sludge of discharge is delivered at the sludge inlet of electric heating drying equipment 6.
Specifically, sludge feeding device 5 is the two-way conveying shaftless screw of sludge, and selected material is stainless steel, is being set
Standby entrance Double-directional rotary, can be good at sludge is dispersed on belt type dewaterer.
The PLC automatic control system (not shown) and the sludge transfer equipment 2, improved chemical feeding device 3,
Continuous band dehydration equipment 4, sludge feeding device 5 and electric heating drying equipment 6 pass through electrical connection.
It is as shown in Figure 2 that dehumidifying in electric heating drying equipment 6 pumps 67 operation principles.From the air outlet 62 of electric heating drying equipment 6
Locate the humid air sent out, the evaporator that dehumidifying heat pump 67 is entered by pipeline is condensed, and obtains the air to have dehumidified, dehumidifying
Air afterwards is heated by condenser, so as to obtain heated dry air, heated dry air is again introduced into air inlet 61 by pipeline, so that
Realize that air circulation uses.
Sewage sludge continuous band provided in an embodiment of the present invention and the complete processing system of heat pump desiccation, realize dewatering period and
The organic coupling of desiccation section, according in sludge the characteristics of moisture distribution, using serial dehydration mode, rational applying mechanical energy and
Thermal energy, reduces the operating cost of Treatment of Sludge.The system uses continuous band dehydration equipment, by destroying cell membrane, making colloid
It is de- steady, so as to play the role of reducing sludge retentiveness, by repeatedly squeezing modified sewage sludge so that sludge water content is fully squeezed
Go out；The sludge to squeeze the water out, is passed through electric heating drying equipment and dehumidifies.Less than 30% is reduced to so as to obtain moisture content, sludge
Calorific value is in 1500kcal/kg and the dewatered sludge of the above.Not only precise structure is compact for the system, floor space is few, but also entirely locates
Sludge is not produced in reason sewage sludge treatment process to have bad luck, escape without pernicious gas, processing on-site sanitation is good.
Correspondingly, the embodiment of the present invention is providing above-mentioned sewage sludge continuous band and the complete processing system of heat pump desiccation
Under the premise of, additionally provide a kind of method of the system in sewage sludge continuous band and electric heating dry chemical conversion set processing.
Specifically, following step is included using sewage sludge continuous band and electric heating dry the chemical conversion set processing method of the system
Suddenly：
(1) treatment of town sewage and sludge is put into sludge storage silo, moisture percentage in sewage sludge >=80%；
(2) improved chemical is added into the improved chemical storage silo；
(3) PLC automatic control system is started, it is the transmission speed of PLC automatic control system automatic adjustment wet mud, wet
The mixing efficiency of sludge and improved chemical, continuous band dehydration equipment rate of water loss and adjust it is described dehumidifying heat pump discharge
Hot dry wind temperature stabilization is at 50~60 DEG C；At the same time according to the dewatered sludge situation of monitoring, the transfer rate of the crawler belt is adjusted.
In step (2), improved chemical is any of polycarboxylate water-reducer, naphthalene series high-efficiency water-reducing agent.
Preferably, it is the 2~5% of wet mud input amount that PLC automatic control system, which controls the input amount of above-mentioned improved chemical,.
In step (3), PLC automatic control system detects automatically and conditioning of mud transmission equipment 2 is to dirty in sludge storage silo 1
The transmission rate of mud so that be delivered to the amount of modified tempering device 41 and defeated from modified tempering device 41 from sludge transfer equipment 2
The sludge quantity gone out is suitable；Similarly, detect and adjust automatically the input amount and input of improved chemical in improved chemical feeding device 3
Speed, avoids the excessive either deficiency of improved chemical input and causes final drying sludge or heat unqualified；At the same time,
PLC automatic control system also monitors the quality for the dewatered sludge discharged in electric heating drying equipment 6, according to the quality-monitoring knot of dewatered sludge
Fruit, the speed of automatic adjustment crawler belt 65-66 so that the Eligibility requirements such as dewatered sludge mass dryness fraction.
Sewage sludge continuous band and electric heating dry the chemical conversion set processing method that the above embodiment of the present invention provides, sewage sludge
Delivery is in pipeline, and no sludge has bad luck the environmental pollution phenomenon of generation, and processing adapts to various sewage sludges, system fortune
Row stability is high, and processing cost is relatively low, and improved chemical input amount is few, and the sludge calorific value of processing can be maintained at more than 90%, also
Can be energy-saving.
Below by embodiment to sewage sludge continuous band provided in an embodiment of the present invention and the complete processing of heat pump desiccation
System and processing method illustrate further.
Embodiment 1
The present embodiment is related to centrally disposing for certain 100 ton day of cities and towns municipal sludge.
Sewage sludge continuous band as shown in Figure 1 and the complete processing system of heat pump desiccation 1 are provided.Pass through vehicle-mounted side
Formula, which is transported to, concentrates sludge treatment factory, temporary by 2~3 days in being kept in sludge storage silo 1, wet in sludge storage silo 1
Moisture percentage in sewage sludge is 85%, and back and forth operation squeezes into sludge in sludge pump to the slide block mechanism in sludge storage silo 1, then by twin shaft
Spiral conveyor is delivered in modified tempering device 41, and improved chemical feeding device 3 adds 3% into modified tempering device 41
The polycarboxylate water-reducer of (wet basis ratio) is modified, and sludge is even squeezing repeatedly in water-removing press 42, sludge dewatering to 60%
Left and right；Dewatered sludge is delivered in electric heating drying equipment 6 by shaftless screw machine (namely sludge feeding device 5), dirty
Mud (is sent to the biography of Article 2 crawler belt after stopping 2h in electric heating drying equipment 6 by the transmission initiating terminal of first crawler belt 65
End is sent to spend 2h), the moisture percentage in sewage sludge from 62 discharge of dewatered sludge outlet is 20%, and dewatered sludge is in noodles column, and calorific value is
1500kcal/kg, is transported outward by conveying equipment and burns or do other final disposals.
Desiccation produce humid air by it is integrated dehumidifying heat pump 67, form dry air after water vapor condensation is pressurizeed,
Temperature so as to fulfill the humid air of the discharge at air outlet 64 is promoted to 55 DEG C from 35 DEG C, becomes heated dry air.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent substitution or improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of sewage sludge continuous band and the complete processing system of heat pump desiccation, it is characterised in that：The system comprises sludge
Storage silo, sludge transfer equipment, improved chemical feeding device, continuous band dehydration equipment, electric heating drying equipment and PLC are automatic
Control system；
The sludge storage silo is connected by pipeline with the sludge transfer equipment；
The sludge transfer equipment, improved chemical feeding device are connected with the continuous band dehydration equipment respectively, realize wet dirt
Mud is mixed with improved chemical in the continuous band dehydration equipment；
The continuous band dehydration equipment is connected with the electric heating drying equipment, realizes sludge by the continuous band dehydration equipment
It is transferred to progress electric heating desiccation dehydration in the electric heating drying equipment；
The PLC automatic control system and the sludge transfer equipment, improved chemical feeding device, continuous band dehydration equipment with
And electric heating drying equipment is electrically connected.
2. sewage sludge continuous band as claimed in claim 1 and the complete processing system of heat pump desiccation, it is characterised in that：It is described
Electric heating drying equipment is at least provided with two crawler belts, and the rotation direction of two adjacent crawler belts is mutually reverse, and a shoe
The transmission end of band is located at the same side with closing on the transmission initiating terminal of crawler belt；The electric heating drying equipment further includes dehumidifying heat pump,
The dehumidifying heat pump makes the electric heating drying equipment form hot air circulation.
3. sewage sludge continuous band as claimed in claim 1 and the complete processing system of heat pump desiccation, it is characterised in that：It is described
The slide block mechanism for preventing that sludge from building bridge is installed in sludge storage silo.
4. sewage sludge continuous band as claimed in claim 1 and the complete processing system of heat pump desiccation, it is characterised in that：It is described
Sludge transfer equipment is double-shaft spiral conveyer and sludge pump.
5. sewage sludge continuous band as claimed in claim 4 and the complete processing system of heat pump desiccation, it is characterised in that：It is described
Sludge pump is plunger pump.
6. sewage sludge continuous band as claimed in claim 1 and the complete processing system of heat pump desiccation, it is characterised in that：It is described
Continuous band dehydration equipment includes modified tempering device and water-removing press；The sludge transfer equipment, improved chemical feed are set
Back-up is not communicated in the modified tempering device, wet mud and improved chemical is mixed in the modified tempering device.
7. sewage sludge continuous band as claimed in claim 6 and the complete processing system of heat pump desiccation, it is characterised in that：It is described
Blender is installed in modified tempering device.
8. a kind of sewage sludge continuous band and electric heating dry chemical conversion set processing method, it is characterised in that：Using such as claim 1~
7 any sewage sludge continuous bands and the complete processing system of heat pump desiccation handle treatment of town sewage and sludge, specific bag
Include following steps；
(1) treatment of town sewage and sludge is put into sludge storage silo, moisture percentage in sewage sludge >=80%；
(2) improved chemical is added into the improved chemical storage silo；
(3) PLC automatic control system is started, PLC automatic control system automatically adjusts transmission speed, the wet mud of wet mud
The rate of water loss of mixing efficiency, continuous band dehydration equipment with improved chemical simultaneously adjusts the xeothermic of the dehumidifying heat pump discharge
Air temperature stabilization is at 50~60 DEG C；At the same time according to the dewatered sludge situation of monitoring, the transfer rate of the crawler belt is adjusted.
9. sewage sludge continuous band as claimed in claim 8 and electric heating dry chemical conversion set processing method, it is characterised in that：It is described
Improved chemical is any of polycarboxylate water-reducer, naphthalene series high-efficiency water-reducing agent.
10. sewage sludge continuous band as claimed in claim 8 and electric heating dry chemical conversion set processing method, it is characterised in that：Institute
The input amount for stating improved chemical is the 2~5% of wet mud input amount.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610895320.7A CN107935354A (en) | 2016-10-13 | 2016-10-13 | Sewage sludge continuous band and the complete processing system of heat pump desiccation and processing method |
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| CN201610895320.7A CN107935354A (en) | 2016-10-13 | 2016-10-13 | Sewage sludge continuous band and the complete processing system of heat pump desiccation and processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109354371A (en) * | 2018-11-14 | 2019-02-19 | 湖北理工学院 | A kind of New Type of Sludge Dewatering system for aluminum profile production wastewater treatment |
| CN112624560A (en) * | 2020-11-30 | 2021-04-09 | 广州晟启能源设备有限公司 | Automatic online detection and regulation method for sludge moisture content and drying system |
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| CN112624560B (en) * | 2020-11-30 | 2022-04-26 | 广州晟启能源设备有限公司 | Automatic online detection and regulation method for sludge moisture content and drying system |
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