CN110526534A - A kind of original position sludge freezing pretreatment unit and its method - Google Patents
A kind of original position sludge freezing pretreatment unit and its method Download PDFInfo
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- CN110526534A CN110526534A CN201910845852.3A CN201910845852A CN110526534A CN 110526534 A CN110526534 A CN 110526534A CN 201910845852 A CN201910845852 A CN 201910845852A CN 110526534 A CN110526534 A CN 110526534A
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- 239000010802 sludge Substances 0.000 title claims abstract description 95
- 238000007710 freezing Methods 0.000 title claims abstract description 50
- 230000008014 freezing Effects 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003507 refrigerant Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000010992 reflux Methods 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 17
- 238000011065 in-situ storage Methods 0.000 claims abstract description 14
- 239000002689 soil Substances 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims description 15
- 239000010408 film Substances 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 4
- 239000013039 cover film Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000002627 tracheal intubation Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 5
- 238000012806 monitoring device Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 241000243251 Hydra Species 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000003834 intracellular effect Effects 0.000 description 2
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
- C02F11/20—Treatment of sludge; Devices therefor by thermal conditioning by freezing
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a kind of sludge freezing pretreatment unit in situ and its methods, device includes the freezing pipe for being vertically inserted into pending mud place, the entrance of the freezing pipe, outlet are respectively communicated to refrigerant main pipe, reflux main pipe for being laid on native face, the reflux main pipe is connected to refrigerator, and the refrigerator passes sequentially through water tank by pipeline, water pump is conducted to refrigerant main pipe.The beneficial effects of the invention are as follows the advantages for combining the construction of frozen soil method, carry out pretreatment in situ to sludge landfill, provide working interface by freezing sludge, sludge landfill is facilitated to excavate；The odor concentration in digging process is reduced, the generation of secondary pollution is prevented.
Description
Technical field
The present invention relates to (sludge sump) based technique for in-situ remediation of sludge landfill in environmental protection field, specifically a kind of original positions
Sludge freezes pretreatment system.
Background technique
China's specific resistance to filtration career development evening, sewage treatment plant generally existing " the light mud of heavy water " of early stage construction incline
To, wastewater treatment rate is pursued, and ignore the final process disposition of sludge, and most of sewage treatment plants do not have improved and complete dirt
Mud treatment measures.Expert studies anticipation, and the amount of sludge that do not dispose properly every year alreadys exceed 30,000,000 tons.Due to being wrapped in sludge
Containing a large amount of poisonous and harmful substances such as heavy metal, persistence organic pollutant, parasitic ovum, pathogenic microorganism, if cannot be appropriate
It conducts oneself well and sets, " time bomb " for igniting environmental crisis certainly will be become, specific resistance to filtration and resource utilization have become for China
One important environment and social concern.
City sludge, which transports sludge landfill to and filled, once once to be efficiently solved sludge of sewage treatment plant and was handling out
The problem of road hardly possible.Constantly increase however as city sludge amount, sludge landfill demand is also being increased, by land resource
Limit value, account for soil less and solve the problems, such as that sludge landfill dilatation is extremely urgent.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, solve to control after sludge landfill close take off film for a long time
While foul smell diffusion problem, the wider Excavating of Landfills problem of area also can solve.
To achieve the above object of the invention, a kind of sludge freezing pretreatment unit in situ is provided, including for vertically to wait locate
The freezing pipe of sludge place insertion is managed, the entrance of the freezing pipe, outlet are respectively communicated to the refrigerant for being laid on native face
Main pipe, reflux main pipe, the reflux main pipe are connected to refrigerator, and the refrigerator passes sequentially through water tank by pipeline, water pump is led
Pass to refrigerant main pipe.
Refrigerant used by this place discloses can be saline solutions such as calcium chloride, magnesium chloride, sodium chloride and lithium chloride etc. no
Interfere the cooling medium of construction operation.Refrigerator can be screw compressor, and using freon or its substitute as system
Cryogen.The water tank and water pump that this place discloses, substantially for being adapted to the relevant device of refrigerant.
It preferably, further include the temperature control device that power is run for foundation temperature information control water pump and refrigerator, it is described
Installation is for the temp-sensing device to temperature control device transmission temperature information in refrigerant main pipe and reflux main pipe.
Model space electricity AI-208G, ZR10 etc. that temperature control device can be selected, the interface for corresponding to temperature control device is RS485
Deng.Temp-sensing device can select model Hydra probe II type, FR-100W etc., and the interface for corresponding to temperature control device is RS485.This
The temperature regulating device that place discloses can be the integral mechanism that water pump and refrigerator carry and be also possible to the control mechanism being additionally arranged.
It preferably, further include for the temperature control device and setting according to temperature information control water pump and refrigerator operation power
For the temperature-sensing probe to temperature control device transmission temperature information in pending mud.
Temperature-sensing probe can select model Hydra probe II type, FR-100W etc., and the interface for corresponding to temperature control device is
SDI-12。
Preferably, in the cooling water circulation pipe of cooling tower in the refrigerator installation for transmit outward temperature information with
Identify the temperature monitoring device of refrigerator whether normal operation.
The II type screw machine of model W-YSLGF300 that refrigerator can be selected.Temperature monitoring device can select model space
Electric AI-208G, ZR10 etc..
Preferably, the refrigerant main pipe, reflux main pipe wrap up heat-insulation and heat-preservation outer layer.
The heat-insulation and heat-preservation outer layer that this place discloses can be using the low materials of thermal coefficients such as polyurethane, composition silicate, In
The material that the good heat-insulation effects such as mineral wool pipe can also be directlyed adopt when no heat-insulation and heat-preservation outer layer does the pipe of refrigerant main pipe, the main pipe that flows back
Road material or its shell.
A kind of sludge freezing preprocess method in situ is also provided, pretreatment unit is freezed using above-mentioned sludge in situ,
Step are as follows:
Drain bar is inserted perpendicularly into sludge landfill, in sludge landfill upper surface arrangement horizontal drain pipe；
Pressure sets load on sludge landfill, so that sludge landfill internal pore water percolate is discharged to horizontal modeling by drain bar
Expect drainpipe, and is discharged and is collected by pipeline；
The freezing pipe is vertically assigned into sludge landfill；
The refrigerator and water pump are opened, to freeze the pending mud in sludge landfill.
In use, calculating packing density according to the radiation radius of freezing pipe, it is ensured that freezing range can radiate entire sludge
, it can generally use the form of seamless steel pipe.
Preferably, the cover film being originally laid on to sludge landfill carries out before cutting film intubation construction, to film internal leakage
Gas is detected；Allow to construct if gas leakage concentration is in safe and reliable range；If gas leakage concentration is higher, first
Ozone Control measure is taken, then is constructed.
In use, if gas leakage concentration is higher, ozone Control measure need to be taken, common method have sprinkling vegetation water or
Active carbon absorbs etc..
Preferably, before freezing the pending mud in sludge landfill, first carry out examination freezing, to examination freezing sludge bulking into
Row strength test, to select to can satisfy the cryogenic temperature and freezing duration of construction loads.
Generally, the sludge intensity after freezing will keep 1.0mpa not crumble, convenient for construction.
Preferably, using above-mentioned temperature sensing device；Temperature sensing device in the refrigerant main pipe detects refrigerant temperature, in its inspection
Power regulation is carried out to the refrigerator when refrigerant temperature of survey exceeds claimed range, to realize that refrigerant output temperature is requiring model
In enclosing；The temperature difference after the temp-sensing device monitoring refrigerant return of the reflux main pipe with design temperature, to maintain the temperature difference freezing
Early period keeps within 2 DEG C, and the freezing later period keeps within 1 DEG C, when the refrigerant temperature of its detection exceeds claimed range to described cold
Jelly machine power and pump power are adjusted, to realize the refrigerant temperature difference in claimed range.
The power regulation that this place discloses can realize adjusting by temperature control device direct basis temperature information, can also be straight
It connects by manually carrying out auxiliary adjustment on temperature regulating device.
Preferably, using above-mentioned temperature-sensing probe, the temperature-sensing probe is uniformly distributed in the pending mud soil body.
Each section of sludge freezing pretreatment unit in situ is mutually linked, and is constructed sludge in situ and is freezed integrated system, is used for
Sludge landfill reparation and excavation pre-treatment.Freezing pretreatment can effectively control odor concentration in sludge landfill film, prevent
Secondary pollution caused by being spread because of foul smell；It freezes pretreated sludge and has certain structural strength, can be mentioned for sludge excavation
For working interface, facilitate construction；Sludge after freezing, structural behaviour can change, the cell of microorganism in sludge
Wall occurs to be crushed by freeze thawing, releases most of water intracellular, and subsequent dehydration will more thoroughly；It pre-processes overall process and uses object
Logos disposition, without adding any chemical agent, does not increase sludge total amount, will not generate secondary pollution.
Since this technology requires height to the cryogenic temperature control of refrigerant and sludge, so needing to carry out in refrigerating process whole
Monitoring.Temp-sensing device in refrigerant main pipe mainly controls the temperature of refrigerant, so that freezing is carried out in strict accordance with design temperature, occurs
Temperature deviation can adjust in time.Temperature-sensing probe mainly monitors refrigerating effect in sludge, it is ensured that sludge can reach the cold of design
Freeze temperature and intensity.The combination of temp-sensing device, temperature monitoring device, temperature-sensing probe can be made in time when temperature changes
It adjusts out, accomplishes fine-grained management.The normal operation of the temperature and water of cooling water and refrigerator, compressor refrigerating efficiency,
Refrigerant temperature has direct relation, if cooling water temperature height or water shortage, lead to discharge temperature, the hypertonia of compressor,
Keep Operation and Maintenance difficult, refrigerating efficiency is low, meanwhile, design requirement is not achieved in refrigerant temperature, certainly will extend freeze-off time, and freezing is dirty
Mud intensity is low, reduces working security, therefore detected to be regulated and controled at any time by temperature monitoring device.It is filled by temperature control
Power adjustment can be realized to water pump or refrigerator with combination temperature information by setting, so that package unit is in the work coordinated.
Since main pipe is exposed in external environment, it is long that refrigerant flows through the period in pipeline, so having to carry out heat-insulated guarantor
Warm measure prevents refrigerant from absorbing external heat, influences refrigerating effect.
It will cause the waste of the freezing energy when moisture percentage in sewage sludge is higher in landfill yard, increase construction cost, so needing to the greatest extent
The interstitial water in sludge may be first excluded, energy utilization rate is improved；Cooperate load and horizontal drain pipe by drain bar, realizes
Interstitial water function is conveniently and efficiently removed, meanwhile, drain bar mode is also more uniform in the intracorporal draining of soil.It vertically assigns and freezes
Pipe, so that the cover film for only needing to open sub-fraction can be intubated, is conducive to ozone Control in film；If selecting horizontal tube
Mounting means, then need landfill yard periphery carry out slope excavation, construction party amount is larger, and the period is longer, and right angle setting without
It needs slope to excavate, saves cost；Cryovial is laid with not by landfill yard area effect, and horizontal tube is laid in the biggish landfill yard of area
When, due to the limit value of length of tube, not by area effect when cannot be radiated landfill yard central segment, and vertically assign.
By detecting before construction to film internal leakage gas, lifting construction safety avoids foul smell a lot of leakage from influencing
Environment,
Strength test is carried out to the sludge bulking of examination freezing, foundation can be provided for the personalized freezing of different sludge soil, it is real
Existing freezing efficiency maximum.
Refrigerator power and pump power are adjusted, its temperature entirety ability of regulation and control can be promoted.
Temperature-sensing probe is uniformly distributed, the accuracy for promoting temperature measurement and regulating and controlling thereafter.
The beneficial effects of the invention are as follows the advantages for combining the construction of frozen soil method, carry out pretreatment in situ to sludge landfill,
Working interface is provided by freezing sludge, sludge landfill is facilitated to excavate；The odor concentration in digging process is reduced, is prevented secondary
The generation of pollution.
Detailed description of the invention
Fig. 1 is that a kind of sludge in situ of the invention freezes pretreatment unit schematic diagram；
Wherein:
1- freezing pipe 2- refrigerant main pipe 3- reflux main pipe
4- refrigerator 5- water tank 6- water pump
7- temp-sensing device 8- temperature-sensing probe 9- temperature monitoring device
10- temperature control device
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
A kind of sludge in situ according to figure 1 freezes pretreatment unit, including for vertically to pending mud place
The freezing pipe 1 of insertion, the entrance of the freezing pipe, outlet are respectively communicated to refrigerant main pipe 2 for being laid on native face, reflux
Main pipe 3, the reflux main pipe 3 are connected to refrigerator 4, and the refrigerator 4 passes sequentially through water tank 5 by pipeline, water pump 6 is conducted to
Refrigerant main pipe 2.
It further include the temperature control device 10 for running power according to temperature information control water pump 6 and refrigerator 4, the refrigerant
Installation is for the temp-sensing device 7 to the temperature control device 10 transmission temperature information in main pipe 2 and reflux main pipe 3.It further include setting
For the temperature-sensing probe 8 to the temperature control device 10 transmission temperature information in pending mud.Cooling in the refrigerator 4
Installation is for transmitting temperature information outward to identify the temperature monitoring of refrigerator 4 whether normal operation in tower cooler water circulation pipe
Device 9.
The refrigerant main pipe 2, reflux main pipe 3 wrap up heat-insulation and heat-preservation outer layer.
Preprocess method is freezed using a kind of sludge in situ, pretreatment unit, step are freezed using above-mentioned sludge in situ
Suddenly are as follows:
Drain bar is inserted perpendicularly into sludge landfill, in sludge landfill upper surface arrangement horizontal drain pipe；
Pressure sets load on sludge landfill, so that sludge landfill internal pore water percolate is discharged to horizontal modeling by drain bar
Expect drainpipe, and is discharged and is collected by pipeline；
The freezing pipe 7 is vertically assigned into sludge landfill, the temperature-sensing probe is uniformly distributed in pending mud soil
In vivo；
The refrigerator 4 and water pump 6 are opened, to freeze the pending mud in sludge landfill；In the refrigerant main pipe 2
Temperature sensing device 7 detect refrigerant temperature, its detection refrigerant temperature exceed claimed range when to the refrigerator 4 carry out power
It adjusts, to realize refrigerant output temperature in claimed range；It is described reflux main pipe 3 temp-sensing device 7 monitor refrigerant return after with
The temperature difference of design temperature, to maintain the temperature difference to keep within 2 DEG C early period in freezing, the freezing later period is kept within 1 DEG C, in its detection
Refrigerant temperature exceed claimed range when 4 power of refrigerator and 6 power of water pump are adjusted, to realize that the refrigerant temperature difference exists
In claimed range.
The cover film being originally laid on to sludge landfill carries out before cutting film intubation construction, carries out to film internal leakage gas
Detection；Allow to construct if gas leakage concentration is in safe and reliable range；If gas leakage concentration is higher, foul smell is first taken
Control measure, then construct.
Before freezing the pending mud in sludge landfill, examination freezing is first carried out, intensity is carried out to the sludge bulking of examination freezing
Test, to select to can satisfy the cryogenic temperature and freezing duration of construction loads.
Saline solution temperature is down to -28~-20 DEG C by 4 unit of refrigerator in use, can be by Specific construction, then
Refrigerant solution is conducted to freezing pipe 1, freezing pipe 1 vertically assigns into sludge landfill, in conductive process, constantly absorbs dirty
The heat of sludge, sludge is freezed in mud landfill yard, then is back to refrigerator 4 and is carried out circulating frozen process again.In general,
- 28 DEG C~-25 DEG C of initial stage saline solution output temperature use, mid-term and -22 DEG C~-20 DEG C of latter stage use can make sludge
Mean temperature is down to -5 DEG C or so, freezes rear sludge intensity and reach 1.0mpa not crumble, and forms sludge and freezes body.Sludge is frozen
Afterwards, under cryogenic effect, foul smell molecular diffusion rate is substantially reduced.Sludge, which freezes body, has structural strength appropriate, opens for sludge
It digs and working interface is provided.After frost is melted again, interior physical property changes sludge, microbial cell rupture, release
Water intracellular out can achieve lower moisture content after subsequent dehydration.
The preferred embodiment of the present invention has been described in detail above, but the invention be not limited to it is described
Embodiment, those skilled in the art can also make various etc. on the premise of not violating the inventive spirit of the present invention
Same variation or replacement, these equivalent modifications or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of original position sludge freezes pretreatment unit, which is characterized in that including for being vertically inserted into pending mud place
Freezing pipe, the entrance of the freezing pipe, outlet be respectively communicated to refrigerant main pipe, reflux main pipe for being laid on native face,
The reflux main pipe is connected to refrigerator, and the refrigerator passes sequentially through water tank by pipeline, water pump is conducted to refrigerant main pipe.
2. original position sludge according to claim 1 freezes pretreatment unit, which is characterized in that further include for according to temperature
Information controls the temperature control device of water pump and refrigerator operation power, and installation is for described in the refrigerant main pipe and reflux main pipe
The temp-sensing device of temperature control device transmission temperature information.
3. original position sludge according to claim 1 freezes pretreatment unit, which is characterized in that further include for according to temperature
Information control water pump and refrigerator run the temperature control device of power and are set in pending mud and be used for the temperature control device
Transmit the temperature-sensing probe of temperature information.
4. original position sludge according to claim 1 freezes pretreatment unit, which is characterized in that the cooling in the refrigerator
Installation is for transmitting temperature information outward to identify the temperature monitoring of refrigerator whether normal operation in tower cooler water circulation pipe
Device.
5. original position sludge according to claim 1 freezes pretreatment unit, which is characterized in that the refrigerant main pipe, reflux
Main pipe wraps up heat-insulation and heat-preservation outer layer.
6. a kind of original position sludge freezes preprocess method, which is characterized in that freezed using the sludge in situ described in claim 1
Pretreatment unit the steps include:
Drain bar is inserted perpendicularly into sludge landfill, in sludge landfill upper surface arrangement horizontal drain pipe；
Pressure sets load on sludge landfill, so that sludge landfill internal pore water percolate is discharged to horizontal plastic row by drain bar
Water pipe, and be discharged and collected by pipeline；
The freezing pipe is vertically assigned into sludge landfill；
The refrigerator and water pump are opened, to freeze the pending mud in sludge landfill.
7. original position sludge according to claim 6 freezes preprocess method, which is characterized in that former on sludge landfill
The cover film being first laid with carries out before cutting film intubation construction, detects to film internal leakage gas；If gas leakage concentration is in safety
Then allow to construct in confidence band；If gas leakage concentration is higher, ozone Control measure is first taken, then construct.
8. original position sludge according to claim 6 freezes preprocess method, which is characterized in that freeze in sludge landfill
Before pending mud, examination freezing is first carried out, strength test is carried out to the sludge bulking of examination freezing, construction loads can satisfy with selection
Cryogenic temperature and freezing duration.
9. original position sludge according to claim 6 freezes preprocess method, which is characterized in that using institute in claim 2
The temperature sensing device stated；Temperature sensing device in the refrigerant main pipe detects refrigerant temperature, exceeds in the refrigerant temperature of its detection and requires
Power regulation is carried out to the refrigerator when range, to realize refrigerant output temperature in claimed range；The reflux main pipe
The temperature difference after temp-sensing device monitoring refrigerant return with design temperature, to maintain the temperature difference to keep within 2 DEG C early period in freezing, freezing
Later period keeps within 1 DEG C, when the refrigerant temperature of its detection exceeds claimed range to the refrigerator power and pump power into
Row is adjusted, to realize the refrigerant temperature difference in claimed range.
10. original position sludge according to claim 6 freezes preprocess method, which is characterized in that using institute in claim 3
The temperature-sensing probe stated, the temperature-sensing probe are uniformly distributed in the pending mud soil body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910845852.3A CN110526534A (en) | 2019-09-09 | 2019-09-09 | A kind of original position sludge freezing pretreatment unit and its method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910845852.3A CN110526534A (en) | 2019-09-09 | 2019-09-09 | A kind of original position sludge freezing pretreatment unit and its method |
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| JP2019148104A (en) * | 2018-02-27 | 2019-09-05 | ケミカルグラウト株式会社 | Ground freezing method |
| CN211035648U (en) * | 2019-09-09 | 2020-07-17 | 上海环境绿色生态修复科技有限公司 | Freezing preprocessing device of normal position mud |
-
2019
- 2019-09-09 CN CN201910845852.3A patent/CN110526534A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20191203 |