CN109663410B - Movable clogging intelligent cleaning mud decrement system and method - Google Patents
Movable clogging intelligent cleaning mud decrement system and method Download PDFInfo
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- CN109663410B CN109663410B CN201910006938.7A CN201910006938A CN109663410B CN 109663410 B CN109663410 B CN 109663410B CN 201910006938 A CN201910006938 A CN 201910006938A CN 109663410 B CN109663410 B CN 109663410B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000000967 suction filtration Methods 0.000 claims abstract description 231
- 239000002002 slurry Substances 0.000 claims abstract description 82
- 230000018044 dehydration Effects 0.000 claims abstract description 45
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 45
- 238000007790 scraping Methods 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 230000009467 reduction Effects 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 16
- 239000006228 supernatant Substances 0.000 claims description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 238000012544 monitoring process Methods 0.000 claims description 28
- 239000012530 fluid Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000004308 accommodation Effects 0.000 claims description 2
- 239000013585 weight reducing agent Substances 0.000 claims 4
- 230000000903 blocking effect Effects 0.000 description 8
- 239000010410 layer Substances 0.000 description 6
- 238000011010 flushing procedure Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/023—Cleaning the external surface
-
- 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
-
- 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
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a movable mud-blocking intelligent cleaning mud decrement system and a method, wherein the mud decrement system comprises a crane, an equipment accommodating box capable of moving on a horizontal boom of the crane, a mud suction filtration pipeline for carrying out decrement filtration dehydration on mud, a vacuum device for providing negative pressure for the dehydration process of the mud suction filtration pipeline, and a control device for controlling the operation of the whole system; the mud suction filtration pipeline is sleeved with a mud scraping plate, the mud scraping plate is fixed with the equipment accommodating box, and the equipment accommodating box is provided with a rigid lifting device which is fixedly connected with the mud suction filtration pipeline and used for lifting the mud suction filtration pipeline to enable the mud suction filtration pipeline to move relative to the mud scraping plate and scrape mud skin. The movement of the mud suction filtration pipeline can be controlled through the simple overhead crane, so that the comprehensive mud suction filtration reduction is realized, and the cleaning of the suction filtration pipeline can be facilitated; meanwhile, after the reduction of the slurry is completed, the slurry suction filtration pipeline can be completely evacuated from the slurry, so that the slurry can be conveniently transported and treated in the later period.
Description
Technical Field
The invention relates to a dehydration reduction method of high-water-content mud, in particular to a movable clogging intelligent cleaning mud reduction system and method.
Background
In the water environment treatment engineering, almost all river courses, lakes and reservoirs suffering from pollution are treated with the problem of dredging the polluted bottom mud. The common method in industry is to use a cutter suction or hydraulic flushing mode to change the bottom mud into mud, then to use a pump to convey the mud to the shore, the volume of the mud is increased by about 10 times after the bottom mud becomes mud, and three problems of 'needing a large-area treatment field, having no proper outlet in the follow-up process and causing secondary pollution risk by complex components' are caused in the treatment of a large amount of mud containing complex pollutants.
At present, a plate-and-frame filter press is used for separating mud from water and dewatering, and centrifugal separation methods are used for separating water, and the methods have the problems of low work efficiency, unmatched dredging construction, difficult utilization of the subsequent dewatered sludge (mud cake), difficult road outlet and the like. Therefore, engineering needs a technical method for rapidly reducing and dehydrating high-water-content slurry.
The existing rapid slurry dehydration and reduction method is mostly a technical scheme of vacuum suction filtration, for example, china patent application No. 201210317079.1 discloses a concentration system for rapid concentration of slurry, a concentration and slurry suction pipeline is arranged below a concentration tank, concentration of slurry is realized through combined action of gravity and negative pressure difference, and concentration efficiency is greatly improved. However, this system has the following drawbacks: ① The suction filtration device is fixed at a position which is 1/3-1/5 of the depth of the concentration tank from the tank bottom; therefore, the slurry concentration effect near the suction filtration device is only good, and the slurry concentration effect far away from the suction filtration device is general; the fixed suction filtration device causes difficult cleaning of the device, the thorough cleaning of the device needs to drain the slurry of the concentration tank, and the device is cleaned after the suction filtration device is disassembled; ② The method for cleaning the mud skin of the clogging adopts a back flushing blowing-off method, and the mud skin gathered around the vacuum suction filtration pipe is blown off to recover the percolation capacity of the filtration layer; the back flushing mode has the defect that for a suction filtration device with a large suction filtration area, the back flushing effect of the mud skin in the mode is not ideal, after mud skin at a certain point is blown off, the blowing-off area becomes a preferential passing area of impact gas, and mud skin at other positions of the suction filtration device cannot be flushed completely, so that the efficiency of cleaning the mud skin by the gas flushing mode is not high; ③ When certain sedimentation layering occurs to the slurry, the supernatant and the lower-layer slurry exist simultaneously, the system is not designed with a supernatant removal scheme, so that the supernatant is discharged through a dehydration channel of the lower-layer slurry in the concentrating process of the suction filtration lower-layer slurry, and the working efficiency of the system is lower.
The Chinese patent application No. 201510391789.2 discloses a dredging mud dewatering method based on mud skin water permeability, and the effect of rapid mud decrement is realized by a method of flocculating mud and then vacuum filtering. But this method also suffers from similar drawbacks: ① In the method, a mud skin removing scheme is not provided, and when mud is filtered until clogging occurs and further filtering is not possible, a treatment scheme is lacking; ② The method is also not provided with a supernatant discharging device, and when the slurry is subjected to certain sedimentation and layering, namely supernatant and lower-layer slurry exist at the same time, the concentration efficiency is lower by using the method.
Therefore, there is an urgent need to find a method that can make the mud decrement faster, decrement degree higher, decrement and block up cleaning operation simpler and more intelligent, decrement mud aftertreatment more convenient.
Disclosure of Invention
The invention aims to: aiming at the problems of fixed position of a suction filtration device, low layered slurry treatment efficiency, low mud skin cleaning efficiency and the like in the existing slurry suction filtration method, the invention provides a movable clogging intelligent cleaning slurry decrement system and a slurry dehydration decrement method based on the system.
The technical scheme is as follows: the invention relates to a movable mud-blocking intelligent cleaning mud decrement system, which comprises a crane, a device accommodating box capable of moving on a horizontal crane arm, a mud suction filtration pipeline for carrying out decrement filtration dehydration on mud, a vacuum device for providing negative pressure for the dehydration process of the mud suction filtration pipeline, and a control device for controlling the operation of the whole system, wherein the device accommodating box is used for accommodating the mud on the horizontal crane arm; a mud scraping plate is sleeved on the mud suction filtration pipeline and is fixed with the equipment accommodating box; the device accommodating box is provided with a rigid lifting device which is fixedly connected with the mud suction filtration pipeline and is used for lifting the mud suction filtration pipeline, enabling the mud suction filtration pipeline to move relative to the mud scraping plate and scraping mud skin; the water outlet pipe end of the mud suction filtration pipeline is connected with a water drainage pipeline which is communicated with a vacuum device; the control device is electrically connected with the equipment accommodating box, the vacuum device and the rigid lifting device respectively.
Preferably, the slurry suction filtration pipeline is formed by integrating a plurality of suction filtration pipes in parallel, and the distance between every two adjacent suction filtration pipes is 30-50 cm; the mud scraping plate is provided with through holes matched with the number and the pipe diameter of the suction filtration pipes, and the difference between the aperture of the through holes and the pipe diameter of the suction filtration pipes is less than or equal to 1mm.
The suction filtration tube can comprise a cylindrical tube cavity, a through dehydration hole is arranged on the side wall of the bottom of the tube cavity, and at least one water guide pipeline is arranged in the tube cavity; the outer surface of the dewatering holes is covered with a filter medium for trapping particles.
Preferably, the rigid lifting device comprises a hydraulic lifter arranged in the equipment accommodating box, and the bottom of the hydraulic lifter is fixed with the water outlet pipe end of the mud suction filtration pipeline; the drainage pipeline comprises a first drainage pipeline communicated with the water outlet pipe end of the mud suction filtration pipeline and a second drainage pipeline communicated with the outside of the mud decrement region, wherein the first drainage pipeline is fixed on the working platform of the hydraulic lifter and moves along with the hydraulic lifter in a lifting manner.
Preferably, the drainage pipeline can be provided with a flowmeter for monitoring the dehydration rate of the mud suction filtration pipeline, and the control device is internally provided with an intelligent clogging monitoring and cleaning module for receiving real-time data of the flowmeter, judging whether the mud suction filtration pipeline is clogged according to the real-time data, sending a signal to the rigid lifting device when the mud suction filtration pipeline is clogged, lifting the mud suction filtration pipeline and scraping surface mud skin.
Specifically, when the real-time dehydration flow of the mud suction filtration pipeline is smaller than 0.2g/cm 2 & s, determining that clogging occurs; when the number of times that the intelligent clogging monitoring and cleaning module sends the lifting signal in 60 seconds is more than or equal to 4 times, the intelligent clogging monitoring and cleaning module sends a feedback signal to the control device to prompt the staff that the area is subjected to suction filtration and dehydration or the mud suction filtration pipeline cannot be cleaned through the mud scraping plate.
Preferably, the slurry reducing system of the present invention may further include a supernatant suction filtration pipe for suction filtering the supernatant of the slurry, and a flexible lifting device for controlling a distance between the supernatant suction filtration pipe and the liquid surface, the flexible lifting device being electrically connected to the control device; the flexible lifting device comprises a motor arranged in the equipment accommodating box and a fixed pulley fixed outside the equipment accommodating box, wherein the fixed pulley is fixedly connected with the supernatant suction filtration pipeline and drives the supernatant suction filtration pipeline to lift under the driving of the motor; the water outlet pipe end of the supernatant suction filtration pipeline is communicated with the drainage pipeline.
More preferably, the mud abatement system of the present invention further comprises a lightweight porous plate floatable on the water surface, the lightweight porous plate being secured to the bottom of the supernatant suction filtration pipe; the fixed pulley of the flexible lifting device is fixedly connected with the porous light plate.
The invention relates to a method for carrying out mud decrement dehydration by using a movable clogging intelligent cleaning mud decrement system, which comprises the following steps:
(1) The method comprises the steps of fixing a ceiling crane on a mud concentration tank, controlling an equipment accommodating box on the ceiling crane to move to an area with high mud water content by a control device, controlling a rigid lifting device to insert a mud suction filtration pipeline into mud by the control device, and starting a vacuum device to reduce mud suction filtration in the area;
(2) When the mud suction filtration pipeline is blocked, a control device is used for controlling the rigid lifting device to lift the mud suction filtration pipeline, the mud skin on the surface of the mud suction filtration pipeline is scraped, and then the mud suction filtration pipeline is reinserted into mud for suction filtration reduction;
(3) After the slurry in the area is subjected to suction filtration and dehydration, controlling the equipment accommodating box on the crane to move to the next slurry area with high water content for dehydration until the whole concentration tank is subjected to suction filtration decrement;
(4) And (5) collecting the mud suction filtration pipeline through the control device, and carrying out subsequent treatment or disposal on the residual mud in the concentration tank.
The method for reducing and dehydrating the slurry comprises the following steps of:
(1) Fixing a ceiling crane on a slurry concentration tank, if supernatant is arranged at the upper part of the slurry concentration tank, firstly controlling a flexible lifting device on the ceiling crane to lower a supernatant suction filtration pipeline onto the supernatant through a control device, opening a vacuum device to suck the supernatant until the supernatant is sucked to the interface of the supernatant and the lower concentrated slurry, and then controlling the flexible lifting device to pull the supernatant suction filtration pipeline;
(2) The device accommodating box on the crane is controlled by the control device to move to an area with high water content of slurry at one place, then the rigid lifting device is controlled by the control device to insert the slurry suction filtration pipeline into the slurry, the vacuum device is opened, and the slurry suction filtration reduction of the area is started;
(3) When the mud suction filtration pipeline is blocked, a control device is used for controlling the rigid lifting device to lift the mud suction filtration pipeline, the mud skin on the surface of the mud suction filtration pipeline is scraped, and then the mud suction filtration pipeline is reinserted into mud for suction filtration reduction;
(4) After the slurry in the area is subjected to suction filtration and dehydration, controlling the equipment accommodating box on the crane to move to the next slurry area with high water content for dehydration until the whole concentration tank is subjected to suction filtration decrement;
(5) And (5) collecting the mud suction filtration pipeline through the control device, and carrying out subsequent treatment or disposal on the residual mud in the concentration tank.
The beneficial effects are that: compared with the prior art, the invention has the advantages that: (1) The simple crane is arranged, and the movement of the mud suction filtration pipeline can be controlled through the simple crane, so that the mud area which does not meet the requirement of reduction dehydration is subjected to suction filtration, and the comprehensive mud suction filtration reduction is realized; moreover, if the suction filtration pipeline is seriously blocked, the suction filtration pipeline can be moved to a region convenient to clean for cleaning, so that the manual cleaning is convenient; meanwhile, after the reduction of the slurry is completed, the slurry suction filtration pipeline can be completely evacuated from the slurry, so that the slurry after suction filtration can be conveniently transported and treated in the later period; (2) The invention is provided with the supernatant suction filtration pipeline, when the mud is settled and layered, the water pumping and mud pumping pipelines are matched practically, the supernatant is pumped out firstly, and then the water in the mud at the lower part of the supernatant is filtered, so that the working efficiency is improved; (3) According to the invention, aiming at the situation when the mud pumping pipeline is blocked, the intelligent blocking monitoring and cleaning module is arranged in the control device, whether the blocking occurs is judged through real-time dehydration rate monitoring, and mud skin on the surface of the mud pumping and filtering pipeline is automatically scraped and cleaned when the blocking is judged, so that the cleaning degree and efficiency of the system are improved.
Drawings
FIG. 1 is a schematic diagram of a mobile plug intelligent cleaning mud abatement system of the present invention;
FIG. 2 is an enlarged view of a partial structure of the present invention;
FIG. 3 is a diagram of the operation of the mud pump filtration pipeline of the present invention for mud dewatering reduction;
FIG. 4 is a working state diagram of the mud suction filtration pipeline and the mud scraping plate in the invention when being matched to scrape mud skin;
FIG. 5 is a schematic illustration of an arrangement of a plurality of suction filtration tubes in a slurry suction filtration pipeline according to the present invention;
FIG. 6 is a schematic illustration of another arrangement of a plurality of suction filtration tubes in a slurry suction filtration line in accordance with the present invention;
fig. 7 is a schematic structural view of a single suction filtration tube in a slurry suction filtration pipeline according to the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, the invention discloses a movable clogging intelligent cleaning mud decrement system, which comprises a control device 1, a ceiling crane 4, an equipment accommodating box 3, a mud suction filtration pipeline 6 and a vacuum device 5, wherein the mud suction filtration pipeline 6 is used for carrying out decrement filtration dehydration on mud, the vacuum device 5 is used for providing negative pressure for the dehydration process of the mud suction filtration pipeline 6, and the control device 1 is used for controlling the operation of the whole movable clogging intelligent cleaning mud decrement system and comprises the control of the ceiling crane 4, the equipment accommodating box 3, the vacuum device 5 and other components.
The overhead crane 4 can be a simple overhead crane, the equipment accommodating box 3 is arranged on the simple overhead crane, the equipment accommodating box 3 can move on a horizontal suspension arm of the overhead crane 4, and a worker can control the equipment accommodating box 3 on the overhead crane 4 to move in all directions through the control device 1;
The slurry suction filtration pipeline 6 can be an all-in-one pipeline, namely, the slurry suction filtration pipeline is formed by integrating a plurality of suction filtration pipes in parallel, and the number of the suction filtration pipes 60 can be 1 to a plurality of suction filtration pipes according to the time requirement required by the slurry reduction. The plurality of suction filtration tubes are generally uniformly arranged, as shown in fig. 5-6, the arrangement mode is not limited, wherein a represents the influence radius of suction filtration of each suction filtration tube 60, and B represents the outer interval between two adjacent suction filtration tubes 60, and is also the sum of the influence radii of two suction filtration tubes; each suction filtration tube 60 may be cylindrical, with a diameter of between 5 cm and 50cm, and the vertical distance B between the outer surfaces of adjacent suction filtration tubes is 30 cm to 50cm. Referring to fig. 7, a single suction filtration tube 60 comprises a cylindrical tube cavity, a through dehydration hole 61 is arranged on the side wall of the bottom of the tube cavity, and a filter medium 62 is covered on the outer surface of the dehydration hole 61 to trap particles and allow moisture to pass through; at least one water conduit 63 may be disposed within the lumen of the suction filter tube 60 to facilitate drainage of the suction filtered water from the slurry.
In order to transport and discharge the mud suction filtration water, a drainage pipeline is connected to the water outlet pipe end of the mud suction filtration pipeline 6, and the drainage pipeline can adopt a flexible plastic drainage pipe.
The mud suction filtration pipeline 6 is fixed with the equipment accommodating box 3 through a rigid lifting device 8. As shown in fig. 2 to 4, the rigid lifting device 8 is mounted on the device accommodating box 3, and the lower end of the rigid lifting device is fixedly connected with the water outlet pipe end of the mud suction filtration pipeline 6, so that the mud suction filtration pipeline 6 can be pulled to vertically move up and down, and meanwhile, no relative displacement can occur between the rigid lifting device and the device. The device containing box 3 is also fixedly provided with a mud scraping plate 9, the mud scraping plate 9 is provided with a through hole matched with the aperture of the mud suction filtration pipeline 6, the mud suction filtration pipeline 6 is vertically inserted into the through hole of the mud scraping plate 9, if the mud suction filtration pipeline 6 is a cylindrical pipeline, the through hole on the mud scraping plate is a circular hole, the inner diameter of the through hole of the mud scraping plate is slightly larger than the outer diameter of the mud suction filtration pipeline, and the size of the through hole is not more than 1mm. In the process of lifting the mud suction filtration pipeline 6 by the rigid lifting device 8, the mud suction filtration pipeline 6 and the mud scraping plate 9 generate relative motion due to the fixed position of the mud scraping plate 9, so that mud skin adsorbed on the mud suction filtration pipeline 6 can be scraped.
The rigid lifting device 8 can be lifting equipment commonly used in the prior art, and as a preferable technical scheme, the rigid lifting device 8 can be a small hydraulic lifter which is arranged in the equipment accommodating box 3 and is retracted into the equipment accommodating box or exposed out of the equipment accommodating box during lifting movement; the drainage pipeline connected with the mud suction filtration pipeline 6 comprises a first drainage pipeline 71 communicated with the water outlet pipe section of the mud suction filtration pipeline 6 and a second drainage pipeline 72 communicated with the outside of the mud decrement region, wherein the first drainage pipeline 71 is fixed on a working platform of the small hydraulic lifter and moves along with the hydraulic lifter, as shown in fig. 3; when the rigid lifting device 8 is lifted, the first drainage pipeline 71 and the mud suction filtration pipeline 6 are lifted at the same time, wherein the first drainage pipeline 71 is partially lifted into the equipment accommodating box 3, as shown in fig. 4, meanwhile, as the mud scraping plate 9 is fixed, the mud suction filtration pipeline 6 is scraped clean by mud blocking mud skin adsorbed on the outer side of the mud suction filtration pipeline 6 in the process of passing through the mud scraping plate 9; when the rigid lifting device 8 is lowered, the small hydraulic lifter is lowered, and simultaneously the first drainage pipeline 71 and the mud suction filtration pipeline 6 are lowered to the working height, as shown in fig. 3, and the next suction filtration can be performed.
In the process of slurry suction filtration and dehydration, the situation that dehydration holes are blocked and the like possibly occurs, at the moment, a slurry suction filtration pipeline 6 needs to be cleaned in time, in order to monitor the blocking situation in time and clean in time and improve the suction filtration efficiency, an intelligent blocking monitoring and cleaning module can be arranged in the control device 1, meanwhile, a flowmeter 2 is arranged on a drainage pipeline, and the flowmeter 2 can be arranged on a second drainage pipeline 72 and used for monitoring the dehydration rate of the slurry suction filtration pipeline 6; the intelligent clogging monitoring and cleaning module intelligently judges whether the all-in-one mud suction filtration pipeline is clogged or not by receiving real-time data of the flowmeter 2. Clogging is considered to occur when the real-time dewatering flow is less than 0.2g/cm 2 s (the ratio of the dewatering mass per unit time to the effective suction area of the mud suction filtration pipeline 6). If the mud is judged to be blocked, the intelligent mud blocking monitoring and cleaning module immediately transmits a signal to the rigid lifting device 8, the rigid lifting device 8 lifts the mud suction filtration pipeline 6 judged to be blocked, and mud blocking mud skin on the surface of the mud suction filtration pipeline 6 is scraped in the lifting process; and then the mud suction filtration pipeline 6 descends to a mud area through the rigid lifting device 8 to continue to carry out mud decrement dehydration until the intelligent clogging monitoring and cleaning module judges clogging next time, and then scraping and cleaning next time is carried out.
When the number of times that the intelligent clogging monitoring and cleaning module sends a lifting signal to the rigid lifting device within 60 seconds reaches 4 times or more, the intelligent clogging monitoring and cleaning module feeds back a signal to the control device 1 to prompt a worker that the mud in the area is completely filtered and dehydrated, and the intelligent clogging monitoring and cleaning module is controlled to move to the next dehydration area; if the staff find that the water content of the slurry in the area is high, the feedback signal indicates that the staff cannot clean the slurry suction filtration pipeline 6 through the mud scraping plate, and manual debugging and cleaning are needed.
The vacuum device 5 provides negative pressure for the suction filtration and dehydration process of the mud suction filtration pipeline 6, and the second drainage pipeline 72 can be communicated with the vacuum device 5, so that the vacuum negative pressure is not more than 20kPa for ensuring the filtration efficiency.
After the mud concentration tank is placed for a period of time, certain sedimentation layering can occur, namely supernatant fluid and lower-layer mud exist simultaneously, and the decrement dehydration efficiency is lower only by adopting the mud suction filtration pipeline 6. In order to further improve the working efficiency, the slurry reduction system of the invention can also comprise a supernatant suction filtration pipeline 11 and a flexible lifting device 12 which are fixedly connected, wherein the supernatant suction filtration pipeline 11 can also be an all-in-one pipeline formed by integrating a plurality of pipelines in parallel; the flexible lifting device 12 is fixed on the equipment accommodating box 3 and is electrically connected with the control device 1, and pulls the supernatant suction filtration pipeline 11 to vertically move up and down in the lifting process, so as to control the distance between the supernatant suction filtration pipeline 11 and the supernatant liquid level. The water outlet pipe end of the supernatant fluid suction filtration pipeline 11 is connected with a third water drainage pipeline 73, and the third water drainage pipeline 73 is communicated with the second water drainage pipeline 72 to convey and discharge the filtered supernatant fluid.
The flexible lifting device 12 may also be lifting equipment commonly used in the prior art, and as a preferred scheme, the flexible lifting device 12 includes a motor and a fixed pulley which are connected with each other, the motor is installed in the equipment accommodating box 3, the fixed pulley is fixed outside the equipment accommodating box, the motor can be connected with the fixed pulley through a rope, the fixed pulley is connected with the supernatant suction filtration pipeline 11 through the rope again, and the traction provided by the motor drives the supernatant suction filtration pipeline 11 to lift. The bottom of the supernatant suction filtration pipeline 11 can be fixed with a porous lightweight plate 10, a through hole matched with the pipe diameter of the supernatant suction filtration pipeline 11 can be arranged on the porous lightweight plate 10, the bottom of the supernatant suction filtration pipeline 11 is inserted into the through hole to be fixed with the porous lightweight plate 10, and at the moment, a fixed pulley and the supernatant suction filtration pipeline 11 can be fixed in a mode of fixedly connecting the fixed pulley with the porous lightweight plate 10; the porous lightweight plate 10 can comprise an upper block and a lower block which are respectively fixed at the top and the bottom of the supernatant suction filtration pipeline 11, the density of the porous lightweight plate 10 is far less than that of water, and the porous lightweight plate can float on the water surface after being loaded with the supernatant suction filtration pipeline 11, thereby being beneficial to suction and discharge of the supernatant.
When the flexible lifting device 12 is lifted, the motor provides traction force through the rope, and the supernatant suction filtration pipeline 11 and the porous lightweight plate 10 are pulled up and lifted to the required height; when the flexible lifting device 12 descends, the motor works to loosen the rope, the supernatant suction filtration pipeline 11 and the porous lightweight plate 10 are not subjected to traction force and float on the supernatant only by gravity and buoyancy, and the supernatant of the flocculated slurry is sucked out under the condition that the vacuum device 5 provides negative pressure.
The invention discloses a movable multi-pipe type mud-blocking intelligent cleaning mud decrement method, which comprises the following steps:
(1) If supernatant is arranged at the upper part of the slurry concentration tank, a worker controls a flexible lifting device 12 on a crane 4 through a control device 1, a supernatant suction and filtration pipeline 11 fixed on a porous lightweight plate 10 is lowered onto the supernatant, a vacuum device 5 is opened, the supernatant suction and filtration pipeline 11 floating on the supernatant can suck the supernatant until the supernatant is sucked to the interface of the supernatant and the lower concentrated slurry, and the porous lightweight plate 10 and the supernatant suction and filtration pipeline 11 are pulled up through the crane 4;
(2) If the concentration tank has no supernatant or the supernatant is sucked up in the step (1), a worker judges a region with higher water content of the slurry, controls the equipment accommodating box 3 on the overhead crane 4 to move to the region, then controls the rigid lifting device 8 by the control device 1, inserts the slurry suction filtration pipeline 6 into the slurry in the region, opens the vacuum device 5, and starts to suction-filter and decrement the slurry in the region by the slurry suction filtration pipeline 6 inserted into the slurry at the moment;
In the process, the intelligent clogging monitoring and cleaning module continuously monitors the dehydration efficiency of the mud suction filtration pipeline 6, and the judgment standard is that clogging is considered to occur when the real-time dehydration flow is smaller than 0.2g/cm 2 & s. At this time, the intelligent clogging monitoring and cleaning module sends a signal to the rigid lifting device 8, and the mud suction filtration pipeline 6 is lifted for cleaning.
(3) When the suction filtration decrement is completed in one area, the staff adjusts the mud suction filtration pipeline 6 through the control device 1 to carry out the suction filtration decrement on the next area until the whole concentration tank completes the suction filtration decrement.
(4) After the whole concentration tank is subjected to suction filtration decrement, a worker can conveniently and rapidly carry out subsequent treatment or disposal on the residual mud in the concentration tank by retracting the device through the control device 1.
Examples
The utility model provides a portable silting intelligence abluent mud decrement system, includes controlling means 1, flowmeter 2, intelligent silting monitoring and cleaning module, simple and easy overhead crane 4, vacuum apparatus 5, mud suction filtration pipeline 6, first, second and third drainage pipe 71, 72 and 73, rigidity elevating gear 8, scraper 9, porous light board 10, supernatant suction filtration pipeline 11, flexible elevating gear 12, equipment accommodation box 3.
The equipment accommodating box 3 is arranged on the simple crane 4, and the rigid lifting device 8, the mud scraping plate 9, the flexible lifting device 12 and the first, second and third drainage pipelines 71, 72 and 73 are arranged on the equipment accommodating box 3, and the first drainage pipeline 71 and the third drainage pipeline 73 are respectively communicated with the second drainage pipeline 72. The slurry suction filtration pipeline 6 is an all-in-one slurry suction filtration pipeline formed by integrating 7 independent suction filtration pipes in parallel, the diameter of each suction filtration pipe is 10cm, the vertical distance between the outer surfaces of two adjacent suction filtration pipes is set to be 40cm, and the filter medium wrapped outside the suction filtration pipes is nonwoven geotextile; the top end of the all-in-one mud suction filtration pipeline is connected with the bottom end of the rigid lifting device 8, and the mud scraping plate 9 is a porous mud scraping plate matched with the all-in-one mud suction filtration pipeline, and the all-in-one mud suction filtration pipeline is sleeved into the porous mud scraping plate. The supernatant suction filtration pipeline 11 is also an all-in-one supernatant suction filtration pipeline formed by integrating 7 independent pipelines in parallel, and is fixed on the porous lightweight plate 10, and the porous lightweight plate 10 is connected with the flexible lifting device 12.
An intelligent clogging monitoring and cleaning module is arranged in the control device 1, and the flowmeter 2 is arranged in a third drainage pipeline 73 at the upper part of the equipment accommodating box 3. The control device 1 is respectively and electrically connected with the equipment accommodating box 3, the vacuum device 5, the rigid lifting device 8 and the flexible lifting device 12, and controls the intelligent clogging monitoring and cleaning module, the overhead crane 4, the vacuum device 5, the rigid lifting device 8 and the flexible lifting device 12.
The working process of the system comprises the following steps:
If the slurry in the region is precipitated and has supernatant, a worker starts a flexible lifting device 12 to lower a porous lightweight plate 10 and an all-in-one supernatant suction filtration pipeline 11 to slurry supernatant by controlling a control device 1, then starts a vacuum device 5 to suction-filter the supernatant, and the suction-filtered supernatant is discharged through a third drainage pipeline 73, and the all-in-one supernatant suction filtration pipeline 11 arranged on the porous lightweight plate 10 always pumps the supernatant on the surface layer until the supernatant suction filtration is completed because the supernatant floats on the supernatant;
After observing that the supernatant fluid is filtered, the working personnel closes the vacuum device 5, and starts the flexible lifting device 12 to retract the porous lightweight plate 10 and the all-in-one supernatant fluid filtering pipeline 11 through controlling the control device 1; then starting a rigid lifting device 8, inserting the multi-in-one mud suction filtration pipeline 6 into mud to be dehydrated and reduced, and starting a vacuum device 5 to dehydrate and reduce the mud in the region;
The pumped and filtered water is sequentially discharged through a first water discharge pipeline 71 and a second water discharge pipeline 72, the flowmeter 2 monitors the dehydration speed in real time in the water discharge process, data are transmitted to an intelligent clogging monitoring and cleaning module, the intelligent clogging monitoring and cleaning module judges whether the system is clogged according to the data of the flowmeter 2, and if the dehydration speed is smaller than 0.2g/cm 2 s, the system is judged to be clogged; at this moment, the intelligent clogging monitoring and cleaning module automatically sends a signal to the rigid lifting device 8, the multi-in-one mud suction filtration pipeline 6 is lifted, the multi-in-one mud suction filtration pipeline 6 is scraped clean by clogging mud skin adsorbed on the outer side of the mud suction filtration pipeline 6 in the process of passing through the mud scraping plate 9, and then the multi-in-one mud suction filtration pipeline 6 is lowered into mud by the rigid lifting device 8 for further suction filtration. If the number of times that the intelligent clogging monitoring and cleaning module sends to the rigid lifting device 8 within 60s reaches 4 times or more, at this time, the intelligent clogging monitoring and cleaning module sends a feedback signal to the control device 1 to prompt the staff that the mud in the area is filtered and dehydrated, and the simple crane 4 is controlled to move to the next mud area for dehydration; the other condition is that the operator is prompted that the all-in-one mud suction filtration pipeline 6 cannot be cleaned through the mud scraping plate 9, manual debugging and cleaning are needed, at the moment, the operator controls the simple crane 4 to move the instrument to a region convenient for cleaning the all-in-one mud suction filtration pipeline 6, and the all-in-one mud suction filtration pipeline 6 is manually cleaned;
repeating the steps until the mud decrement dehydration of the whole mud concentration pond or the mud concentration pond and other areas is completed; the staff then withdraws all the instruments by controlling the simple crane 4, and finally the dehydrated slurry in the area can be subjected to subsequent treatment and disposal.
Claims (9)
1. The utility model provides a portable silt intelligence abluent mud decrement system which characterized in that includes that it hangs and can move on its horizontal davit equipment accommodation box, is used for carrying out the mud suction filtration pipeline of decrement filtration dehydration to mud, is used for providing the vacuum device of negative pressure and is used for controlling the controlling means of whole system operation for mud suction filtration pipeline dehydration process; the mud suction filtration pipeline is sleeved with a mud scraping plate, the mud scraping plate is fixed with the equipment accommodating box, and the equipment accommodating box is provided with a rigid lifting device which is fixedly connected with the mud suction filtration pipeline and is used for lifting the mud suction filtration pipeline, enabling the mud suction filtration pipeline and the mud scraping plate to move relatively and scraping mud skin; the water outlet pipe end of the mud suction filtration pipeline is connected with a water drainage pipeline which is communicated with a vacuum device; the control device is electrically connected with the equipment accommodating box, the vacuum device and the rigid lifting device respectively; the device also comprises a supernatant fluid suction and filtration pipeline for suction and filtration of the slurry supernatant fluid and a flexible lifting device for controlling the distance between the supernatant fluid suction and filtration pipeline and the liquid level, wherein the flexible lifting device is electrically connected with the control device; the device also comprises a porous lightweight plate which can float on the water surface and is fixed at the bottom of the supernatant suction filtration pipeline; the drainage pipeline is provided with a flowmeter for monitoring the dehydration rate of the mud suction filtration pipeline, and the control device is internally provided with an intelligent clogging monitoring and cleaning module for receiving real-time data of the flowmeter, judging whether the mud suction filtration pipeline is clogged according to the real-time data, sending a signal to the rigid lifting device when the mud suction filtration pipeline is clogged, lifting the mud suction filtration pipeline and scraping surface mud skin.
2. The movable clogging intelligent cleaning slurry decrement system according to claim 1, wherein the slurry suction filtration pipeline is formed by integrating a plurality of suction filtration pipes in parallel, and the distance between adjacent suction filtration pipes is 30-50 cm; the mud scraping plate is provided with through holes matched with the number and the pipe diameter of the suction filtration pipes, and the difference between the aperture of the through holes and the pipe diameter of the suction filtration pipes is less than or equal to 1mm.
3. The movable clogging intelligent cleaning mud abatement system of claim 2, wherein the suction filtration pipe comprises a cylindrical pipe cavity, a through dehydration hole is arranged on the side wall of the bottom of the pipe cavity, and at least one water guide pipeline is arranged inside the pipe cavity; the outer surface of the dewatering holes is covered with a filter medium for trapping particles.
4. The intelligent cleaning mud abatement system of claim 1, wherein the rigid lifting device comprises a hydraulic lifter installed in the equipment accommodating box, and the bottom of the hydraulic lifter is fixed with the water outlet pipe end of the mud suction filtration pipeline; the drainage pipeline comprises a first drainage pipeline communicated with the water outlet pipe end of the mud suction filtration pipeline and a second drainage pipeline communicated with the outside of the mud decrement region, wherein the first drainage pipeline is fixed on a working platform of the hydraulic lifter and moves along with the hydraulic lifter in a lifting mode.
5. The movable clogging intelligent cleaning mud decrement system according to claim 1, wherein clogging is judged to occur when the real-time dewatering flow rate of the mud suction filtration pipeline is less than 0.2g/cm 2 s; when the number of times that the intelligent clogging monitoring and cleaning module sends the lifting signal in 60s is more than or equal to 4 times, the intelligent clogging monitoring and cleaning module sends a feedback signal to the control device to prompt the staff that the suction filtration and dehydration are finished or that the mud suction filtration pipeline cannot be cleaned through the mud scraping plate.
6. The movable clogging intelligent cleaning mud reducing system according to claim 1, wherein the flexible lifting device comprises a motor arranged in the equipment accommodating box and a fixed pulley fixed outside the equipment accommodating box, the fixed pulley is fixedly connected with the supernatant suction and filtration pipeline, and the supernatant suction and filtration pipeline is driven by the motor to lift and lower; the water outlet pipe end of the supernatant suction filtration pipeline is communicated with the drainage pipeline.
7. The movable plugging intelligent cleaning mud abatement system of claim 6, wherein the fixed pulley of the flexible lifting device is fixedly connected with the lightweight porous plate.
8. A method of mud weight reduction dewatering using the mud weight reduction system of claim 1, comprising the steps of:
(1) The method comprises the steps of fixing a ceiling crane on a mud concentration tank, controlling an equipment accommodating box on the ceiling crane to move to an area with high mud water content by a control device, controlling a rigid lifting device to insert a mud suction filtration pipeline into mud by the control device, and starting a vacuum device to reduce mud suction filtration in the area;
(2) When the mud suction filtration pipeline is blocked, a control device is used for controlling the rigid lifting device to lift the mud suction filtration pipeline, the mud skin on the surface of the mud suction filtration pipeline is scraped, and then the mud suction filtration pipeline is reinserted into mud for suction filtration reduction;
(3) After the slurry in the area is subjected to suction filtration and dehydration, controlling the equipment accommodating box on the crane to move to the next slurry area with high water content for dehydration until the whole concentration tank is subjected to suction filtration decrement;
(4) And (5) collecting the mud suction filtration pipeline through the control device, and carrying out subsequent treatment or disposal on the residual mud in the concentration tank.
9. A method of mud weight reduction dewatering using the mud weight reduction system of claim 6, comprising the steps of:
(1) Fixing a ceiling crane on a slurry concentration tank, if supernatant is arranged at the upper part of the slurry concentration tank, firstly controlling a flexible lifting device on the ceiling crane to lower a supernatant suction filtration pipeline onto the supernatant through a control device, opening a vacuum device to suck the supernatant until the supernatant is sucked to the interface of the supernatant and the lower concentrated slurry, and then controlling the flexible lifting device to pull the supernatant suction filtration pipeline;
(2) The device accommodating box on the crane is controlled by the control device to move to an area with high water content of slurry at one place, then the rigid lifting device is controlled by the control device to insert the slurry suction filtration pipeline into the slurry, the vacuum device is opened, and the slurry suction filtration reduction of the area is started;
(3) When the mud suction filtration pipeline is blocked, a control device is used for controlling the rigid lifting device to lift the mud suction filtration pipeline, the mud skin on the surface of the mud suction filtration pipeline is scraped, and then the mud suction filtration pipeline is reinserted into mud for suction filtration reduction;
(4) After the slurry in the area is subjected to suction filtration and dehydration, controlling the equipment accommodating box on the crane to move to the next slurry area with high water content for dehydration until the whole concentration tank is subjected to suction filtration decrement;
(5) And (5) collecting the mud suction filtration pipeline through the control device, and carrying out subsequent treatment or disposal on the residual mud in the concentration tank.
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| CN110860538B (en) * | 2019-11-21 | 2022-02-08 | 佛山科学技术学院 | Cleaning device for industrial wastewater treatment device |
| CN111889483B (en) * | 2020-07-14 | 2022-09-06 | 广城建设集团有限公司 | Hoisting type environment-friendly drainage treatment system and treatment method for engineering muck in high water-containing area |
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