CN112759411A - Slurry shield muck treatment system and method - Google Patents
Slurry shield muck treatment system and method Download PDFInfo
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- CN112759411A CN112759411A CN202110190615.5A CN202110190615A CN112759411A CN 112759411 A CN112759411 A CN 112759411A CN 202110190615 A CN202110190615 A CN 202110190615A CN 112759411 A CN112759411 A CN 112759411A
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- 239000002002 slurry Substances 0.000 title claims abstract description 269
- 238000011282 treatment Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002699 waste material Substances 0.000 claims abstract description 133
- 239000002245 particle Substances 0.000 claims abstract description 122
- 239000002689 soil Substances 0.000 claims abstract description 101
- 239000007787 solid Substances 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000007599 discharging Methods 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 25
- 238000004537 pulping Methods 0.000 claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 11
- 239000011449 brick Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 27
- 239000004927 clay Substances 0.000 claims description 24
- 238000005245 sintering Methods 0.000 claims description 19
- 239000002893 slag Substances 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 13
- 238000011156 evaluation Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000007670 refining Methods 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- 239000010881 fly ash Substances 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 6
- 238000011221 initial treatment Methods 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 239000012065 filter cake Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000010819 recyclable waste Substances 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 12
- 238000000746 purification Methods 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229920004933 Terylene® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000281 calcium bentonite Inorganic materials 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000005020 polyethylene terephthalate Substances 0.000 description 1
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0003—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof containing continuous channels, e.g. of the "dead-end" type or obtained by pushing bars in the green ceramic product
-
- 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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6021—Extrusion moulding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention relates to a slurry shield muck treatment system and a treatment method, wherein the treatment system comprises: the system comprises a residue-soil separation system, a waste slurry identification system, a waste slurry conversion system, a filter pressing device, a waste residue pool and a residue-soil recovery system; the muck treatment method comprises the following steps: firstly, carrying out solid-liquid separation on untreated waste slurry through the residue-soil separation system, conveying a solid part to the residue-soil transfer system, allowing a liquid part to flow into the waste slurry identification system, judging the performance of the waste slurry, respectively modulating the slurry with good performance through the waste slurry conversion system, filtering the slurry with poor performance through the filter pressing equipment, discharging solid particles into the waste residue pool, and finally, drying the solid particles in the sun through the residue-soil recovery system and roasting to prepare the brick for house construction; the treatment system and the treatment method have the advantages of high waste resource recovery rate, reduction of the cost of pulping materials and high popularization and application values.
Description
Technical Field
The invention relates to the technical field of civil engineering construction, in particular to a slurry shield muck treatment system and a treatment method thereof.
Background
With the rapid development of subway construction in China, the shield method is widely applied to subway construction due to the advantages of safe operation environment, high construction efficiency, small influence on the surrounding environment and the like, but the existing construction method also has the disadvantages of low muck recovery rate and serious waste; secondly, the shield muck is lost in the transportation process, the foaming agent, the dispersing agent and the like contained in the muck can pollute the soil body, the environmental sanitation of the city is seriously polluted, the transportation cost is higher, and the economic benefit is poorer; and thirdly, a large amount of absorption sites occupy huge land resources, the usable land for human is reduced, and the like.
The chinese utility model patent with publication number CN201245519Y discloses a sewage purification treatment and recycling system in shield construction, which comprises a solid-liquid separator, a sewage input pipeline of which is connected with a sewage discharge pipeline of a shield machine, and a sewage output pipeline which is communicated with a water collecting tank and used for separating silt in sewage generated by shield construction; sewage in the water collecting tank is input into a sedimentation tank through a sewage pipeline, and a sewage output pipeline of the sedimentation tank is communicated with a ground pre-sedimentation tank; still include sewage purification unit, sewage in the preliminary sedimentation tank passes through among the pipeline input sewage purification unit, discharges to the clean water basin after purification treatment to carry to each water supply point through the secondary water supply tank. The utility model discloses a can realize cyclic utilization after the sewage purification that produces in the work progress, the effectual cyclic utilization who improves the water resource to can reduce because of the pollution that direct emission caused all ring edge borders, but have following shortcoming: the slurry performance index can not be automatically identified and judged, the residue soil recovery rate is low, and the pulping cost can not be reduced.
Disclosure of Invention
The invention provides a slurry shield muck treatment system and a treatment method thereof.
The processing system comprises: the system comprises a residue-soil separation system, a waste slurry identification system, a waste slurry conversion system, a filter pressing device, a waste residue pool and a residue-soil recovery system;
the residue and soil separation system comprises vibration roughing equipment, a centrifugal machine and fine selection equipment; the inlet end of the vibration roughing device is communicated with the output end of the residue soil slurry pool, the outlet end of the vibration roughing device is respectively communicated with the waste residue pool and the feed inlet of the centrifugal machine, the vibration roughing device is used for separating solid particles and liquid with large particle diameters in the residue soil slurry, the centrifugal machine separates the solid particles and the liquid with small particle diameters in the residue soil slurry after being processed by the vibration roughing device, the discharge outlet of the vibration roughing device is respectively communicated with the waste residue pool and the inlet end of the refining device, the refining device separates cohesive soil particles and liquid from the residue soil slurry after being processed by the centrifugal machine, the outlet end of the refining device is respectively communicated with the waste residue pool and the centrifugal machine, and the vibration roughing device, the centrifugal machine and the refining device convey the separated particles to the waste residue pool;
the waste slurry identification system comprises a waste slurry detection box, a test unit and a display; the waste slurry detection box receives the residue soil slurry processed by the residue soil separation system, the test unit is arranged at the top of the waste slurry detection box and consists of a specific gravity sensor, a viscosity sensor and a PH sensor, the test unit carries out index evaluation on the residue soil slurry flowing into the detection box and outputs an index evaluation result to the display, the display displays the evaluation result to a user, and the waste slurry identification system conveys the residue soil slurry meeting the index to the waste slurry conversion system through a pipeline and a pipeline valve;
the waste slurry conversion system comprises a waste slurry tank, a filtering tank and a slurry mixing tank; the feed ends of the waste slurry tank and the filter tank are respectively communicated with the pipeline valve, the discharge end of the waste slurry tank is communicated with the filter pressing equipment, and the liquid outlet end of the filter tank is communicated with the liquid inlet of the slurry mixing tank;
the filter pressing equipment comprises a filter press; the feeding end of the filter press is communicated with the discharging end of the waste slurry tank, the discharging end of the filter press is provided with a first discharging end and a second discharging end, the first discharging end is communicated with the slurry mixing tank, the second discharging end is communicated with the waste slag tank, and the filter press is used for carrying out solid-liquid separation on the soil-slag slurry conveyed by the discharging end of the waste slurry tank and outputting the soil-slag slurry through the first discharging end and the second discharging end respectively;
the waste residue pool receives solid particles discharged by the residue-soil separation system and the filter pressing equipment, and the solid particles are conveyed to the residue-soil recovery system through a conveyor belt after being pretreated;
the muck recovery system comprises a muck drying device and a muck sintering device; the feed inlet of dregs drying device with the conveyer belt links up, the discharge gate with dregs sintering device's feed inlet passes through the conveyer belt links up, dregs drying device will separate out the clay granule after the solid particle is dried, dregs sintering device will the porous brick is made in the sintering of clay granule.
Further, the vibration roughing device comprises: a vibration motor and a vibrating screen;
the vibrating motor is electrically connected with the vibrating screen, the vibrating motor provides periodic inertia force required by vibration, and the vibrating screen performs intermittent vibration and separates solid particles with certain particle sizes.
Further, the waste slurry conversion system further comprises: a pulping material pond;
the materials stored in the pulping material pond comprise: the special shield grouting agent, bentonite and fly ash are used for guiding a pulping material into the pulp mixing tank to realize the conversion from waste pulp to grouting pulp.
Further, the filter pressing equipment also comprises: a filter medium;
the solid particles obtained by filtering the filter medium are mainly clay particles with the particle diameter of less than 20 mu m, and the solid particles are extruded to form a filter cake.
Further, the shaker includes: a first shaker cyclone and a second shaker cyclone;
the first vibrating screen swirler is communicated with the second vibrating screen swirler, untreated slag-soil slurry passes through the first vibrating screen swirler and the second vibrating screen swirler to be separated, and solid particles with particle diameters larger than 2mm and the slag-soil slurry with particle diameters smaller than 2mm are obtained.
The muck treatment method comprises the following steps:
step 2.1, separating the untreated slag-soil slurry by the first vibrating screen swirler and the second vibrating screen swirler to respectively obtain solid particles with the particle diameter larger than 2mm and the first slag-soil slurry with the particle diameter smaller than 2 mm;
2.2, respectively conveying the first muck slurry to the waste slag pool and the centrifuge through pipelines for separation;
step 5.1, index evaluation such as specific gravity, viscosity and the like is carried out on the third slag slurry flowing into the waste slurry detection box according to a specific gravity sensor, a viscosity sensor and a PH sensor arranged in the test unit, and whether the third slag slurry meets the requirement of grouting materials or not is automatically judged;
step 5.2, respectively conveying the third slag-soil slurry meeting the requirements of grouting materials and not meeting the requirements of the grouting materials to the waste slurry conversion system through the pipelines;
step 6.1, conveying the third slag-soil slurry meeting the requirements of grouting materials into a filter tank for filtering suspended matters, guiding the filtered third slag-soil slurry into a slurry mixing tank, adding a shield special pulping agent, bentonite, fly ash and other pulping materials into the slurry mixing tank through a pulping material tank, and preparing the grouting slurry meeting the requirements;
step 6.2, injecting the grouting slurry meeting the requirements into a shield tunneling machine through the pipeline to realize the conversion from the waste slurry to the grouting slurry;
step 6.3, conveying the third slag-soil slurry which does not meet the requirements of grouting materials into the waste slurry tank, and discharging the third slag-soil slurry into the filter pressing equipment through the discharge end after precipitation;
step 7.1, performing solid-liquid separation on the third residue soil slurry which does not meet the requirements of grouting materials by using the filter press, and filtering a liquid part and then flowing into the slurry mixing tank;
step 7.2, filtering the solid part again by the filter medium to obtain clay particles with the particle diameter of less than 20 microns, and conveying the clay particles to the waste slag pool;
step 9.1, drying the waste residue by the waste residue drying device to obtain recyclable waste residue;
and 9.2, sintering and extruding the recyclable muck through the muck sintering device and the extruder. Obtaining the porous brick for the building.
Further, the step 2 of separating the untreated muck slurry by a muck separation system specifically comprises the following steps: and (3) intermittently vibrating and separating the untreated muck slurry through the vibrating screen.
Further, in the step 2.1, the first residue slurry with the particle diameter smaller than 2mm is specifically gravel and broken stone brought out by circulating mud and water.
Further, the step 3 of conveying the first muck slurry to a centrifuge 1.2 for primary treatment specifically comprises: the centrifuge 1.2 discharges free liquid or fine solid particles respectively according to different centrifugal forces applied to solid and liquid particles in the first residue-soil slurry, and the larger solid particles are precipitated to form a particle layer and are pushed out spirally.
Further, the step 5 is also included before the step of connecting the third slurry to the waste slurry identification system; and automatically judging the slurry performance of the third slag-soil slurry according to the stratum where the shield machine is located during tunneling, and executing the step 6 or the step 7.
Compared with the prior art, the invention has the following beneficial effects:
1. the recycling rate is high. Compared with the muck treatment device in the prior art, the treatment system carries out multistage separation and treatment on the muck slurry through a muck separation system, a waste slurry conversion system, a filter pressing device and a muck recovery system, improves the utilization rate of the muck and the waste slurry and increases the added value of products.
2. Automatically identifying and judging the slurry performance index. Compared with the muck treatment device in the prior art, the treatment system is provided with the waste slurry identification system, the slurry performance of the muck can be automatically identified, the corresponding treatment process is executed, the waste slurry transfer process is simplified, and the treatment efficiency is improved.
3. The cost of pulping materials is reduced. Compared with the prior art, the treatment system is provided with the waste slurry conversion system to carry out multi-layer filtration on the muck slurry, so that the cost for preparing the waste slurry is reduced.
4. The popularization and application value is high. Compared with the prior art, the method improves the current situation that the utilization rate of the traditional shield muck treatment is less than 1%, can save 30-40% of pulping materials, and has obvious economic benefit.
Drawings
FIG. 1 is a schematic diagram of a processing system according to the present invention;
FIG. 2 is a flow chart of a slurry shield muck treatment method.
The labels in the figure are: 1-a residue and soil separation system, 1.1-vibration roughing equipment, 1.1.1-a vibration motor, 1.1.2-a vibration sieve, 1.1.2.1-a first vibration sieve cyclone, 1.1.2.2-a second vibration sieve cyclone, 1.2-a centrifugal machine and 1.3-fine selection equipment; 2-a waste pulp identification system, 2.1-a waste pulp detection box, 2.2-a test unit, 2.2.1-a specific gravity sensor, 2.2.2-a viscosity sensor, 2.2.3-a PH sensor and 2.3-a display; 3-a waste pulp conversion system, 3.1-a waste pulp tank, 3.2-a filter tank, 3.3-a pulp mixing tank and 3.4-a pulping material tank; 4-filter pressing equipment, 4.1-filter press and 4.2-filter medium; 5-a waste slag tank; 6-a residue soil recovery system, 6.1-a residue soil drying device and 6.2-a residue soil sintering device; 7-a muck slurry tank; 8-pipeline valves; 9-shield machine.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the drawings and the detailed description of the present specification.
The invention provides a slurry shield muck treatment system, as shown in figure 1, the treatment system comprises: dregs piece-rate system 1, useless thick liquid identification system 2, useless thick liquid conversion system 3, filter pressing equipment 4, useless cinder pond 5, dregs recovery system 6 and dregs thick liquid pond 7, wherein, dregs piece-rate system 1 includes: the device comprises a vibration roughing device 1.1, a centrifugal machine 1.2 and a fine selection device 1.3, wherein the inlet end of the vibration roughing device 1.1 is communicated with the output end of a residue slurry tank 7, the outlet end of the vibration roughing device 1.1 is respectively communicated with the feed inlets of a waste residue tank 5 and the centrifugal machine 1.2, the vibration roughing device 1.1 is used for separating solid particles and liquid with large particle diameters in the residue slurry, the centrifugal machine 1.2 is used for separating the solid particles and the liquid with small particle diameters in the residue slurry processed by the vibration roughing device 1.1 according to the centrifugal force applied to the solid particles and the liquid, the discharge outlet of the centrifugal machine 1.2 is respectively communicated with the inlet ends of the waste residue tank 5 and the fine selection device 1.3, the fine selection device 1.3 is used for separating cohesive soil particles and liquid from the residue slurry processed by the centrifugal machine 1.2, the outlet end of the fine selection device 1.3 is respectively communicated with the waste residue tank 5 and the centrifugal machine 1.2, the vibration roughing device 1., the centrifugal machine 1.2 and the fine selection equipment 1.3 convey the separated solid particles to a waste residue pool 5; the waste pulp identifying system 2 includes: the waste slurry detection system comprises a waste slurry detection box 2.1, a test unit 2.2 and a display 2.3, wherein the waste slurry detection box 2.1 receives the residue slurry treated by the residue-soil separation system 1, the test unit 2.2 consists of a specific gravity sensor 2.2.1, a viscosity sensor 2.2.2 and a pH sensor 2.2.3, the test unit 2.2 carries out index evaluation on the residue slurry flowing into the waste slurry detection box 2.1 and outputs the index evaluation result to the display 2.3, the display 2.3 displays the evaluation result to a user, and the waste slurry identification system 2 conveys the residue slurry meeting the index to the waste slurry conversion system 3 through a pipeline (not shown in the figure) and a pipeline valve 8; the waste slurry conversion system 3 comprises a waste slurry tank 3.1, a filter tank 3.2, a slurry mixing tank 3.3 and a pulping material tank 3.4, wherein the feeding ends of the waste slurry tank 3.1 and the filter tank 3.2 are respectively communicated with a pipeline valve 8, the discharging end of the waste slurry tank 3.1 is communicated with a filter pressing device 4, the liquid outlet end of the filter tank 3.2 is communicated with a liquid inlet of the slurry mixing tank 3.3, and the liquid inlet of the slurry mixing tank 3.3 is communicated with the pulping material tank 3.4 through a pipeline; the filter pressing equipment 4 comprises a filter press 4.1 and a filter medium 4.2, the feeding end of the filter press 4.1 is communicated with the discharging end of the waste slurry pool 3.1, the discharging end of the filter press 4.1 is provided with a first discharging end and a second discharging end (not shown in the figure), the filter medium 4.2 is arranged at the port of the second discharging end, the first discharging end is communicated with the slurry mixing pool 3.3, the second discharging end is communicated with the waste residue pool 5, and the filter press 4.1 carries out solid-liquid separation on the residue soil slurry conveyed by the discharging end of the waste slurry pool 3.1 and outputs the residue soil slurry to the slurry mixing pool 3.3 and the waste residue pool 5 through the first discharging end and the second discharging end respectively; the waste residue pool 5 receives solid particles discharged by the residue-soil separation system 1 and the filter pressing equipment 4, and the solid particles are pretreated and then conveyed to the residue-soil recovery system 6 through a conveyor belt; the dregs recovery system 6 includes dregs drying device 6.1 and dregs sintering device 6.2, and dregs drying device 6.1's feed inlet links up with the conveyer belt, and the discharge gate passes through the conveyer belt with dregs sintering device 6.2's feed inlet and links up, and dregs drying device 6.1 separates out the clay granule after drying solid particle, and dregs sintering device 6.2 makes the porous brick with the clay granule sintering.
Further, the vibration roughing device 1.1 comprises a vibration motor and a vibration screen (not shown in the figure), the vibration motor is electrically connected with the vibration screen, the vibration motor provides periodic inertia force required by vibration, and the vibration screen separates solid particles with a certain particle size through intermittent vibration.
Further, the centrifuge 1.2 separates the diameter D of the solid particles from the slurry of dregs1The range is as follows: d is more than 74 mu m1＜2mm。
Further, the refining apparatus 1.3 separates the diameter D of the solid particles from the slurry of dregs2The range is as follows: d is more than 20 mu m2＜74μ m。
Further, the materials stored in the pulping material pool 3.4 comprise a special shield pulping agent, bentonite and fly ash, and the pulping materials are introduced into the mixing pool 3.3 to realize the conversion of waste slurry into grouting slurry.
Preferably, the special shield grouting agent is a poly-wound jc-18 type shield grouting agent, and the bentonite is calcium bentonite.
Further, the solid particles obtained by filtering with the filter medium 4.2 are mainly clay particles with the particle diameter smaller than 20 μm, and the solid particles are extruded to form a filter cake.
Further preferably, the filter medium 4.2 is made of terylene long fiber filter cloth, so that the filter medium 4.2 has good acid resistance, weak base resistance, wear resistance, corrosion resistance and recoverability.
Further, the shaker includes a first shaker cyclone 1.1.2.1 and a second shaker cyclone 1.1.2.2, the first shaker cyclone 1.1.2.1 is in communication with the second shaker cyclone 1.1.2.2, and the untreated slurry is separated by the first shaker cyclone 1.1.2.1 and the second shaker cyclone 1.1.2.3 to obtain solid particles having a particle diameter of greater than 2mm and slurry having a particle diameter of less than 2 mm.
The embodiment of the invention also provides a slurry shield muck treatment method, as shown in fig. 2, the muck treatment method comprises the following steps:
step 2.1, separating the untreated residue soil slurry by a first vibrating screen swirler 1.1.2.1 and a second vibrating screen swirler 1.1.2.2 to respectively obtain solid particles with the particle diameter larger than 2mm and first residue soil slurry with the particle diameter smaller than 2 mm;
step 2.2, respectively conveying the first residue soil slurry to a waste residue pool 5 and a centrifuge 1.2 through pipelines for separation;
step 5.1, index evaluation such as specific gravity, viscosity and the like is carried out on the third slag slurry flowing into the waste slurry detection box 2.1 according to a specific gravity sensor 2.2.1, a viscosity sensor 2.2.2 and a PH sensor 2.2.3 arranged in the test unit 2.2, and whether the third slag slurry meets the requirement of grouting materials or not is automatically judged;
step 5.2, respectively conveying the third slag-soil slurry which meets the requirements of the grouting materials and does not meet the requirements of the grouting materials to a waste slurry conversion system 3 through pipelines;
step 6.1, conveying third slag-soil slurry meeting the requirements of grouting materials to a filter tank 3.2 for filtering suspended matters, guiding the filtered third slag-soil slurry into a slurry mixing tank 3.3, adding a shield special pulping agent, bentonite and fly ash pulping materials into the slurry mixing tank 3.3 through a pulping material tank 3.4, and preparing the grouting slurry meeting the requirements;
step 6.2, injecting the grouting slurry meeting the requirements into a shield machine 9 through a pipeline to realize the conversion from waste slurry to grouting slurry;
step 6.3, conveying the third slag-soil slurry which does not meet the requirements of grouting materials into a waste slurry tank 3.1, and discharging the third slag-soil slurry into a filter pressing device 4 through a discharge end after precipitation;
step 7.1, performing solid-liquid separation on the third residue slurry which does not meet the requirement of the grouting material by using a filter press 4.1, and filtering a liquid part and then flowing into a slurry mixing tank 3.3;
step 7.2, the solid part is filtered again by the filter medium 4.2 to obtain clay particles with the particle diameter smaller than 20 mu m, and the clay particles are conveyed to the waste slag pool 5;
step 9.1, drying the waste residue by a waste residue drying device 6.1 to obtain recyclable waste residue;
and 9.2, sintering and extruding the recyclable muck through a muck sintering device 6.2 and an extruder. Obtaining the porous brick for the building.
Further, as shown in fig. 2, the step 2 of separating the untreated muck slurry by the muck separation system 1 specifically includes: and (3) intermittently vibrating and separating the untreated muck slurry through a vibrating screen.
Further, as shown in fig. 2, in step 2.1, the first residue slurry with a particle diameter of less than 2mm is concrete gravel and crushed stone brought out by circulating muddy water.
Further, as shown in fig. 2, the step 3 of conveying the first muck slurry to the centrifuge 1.2 for primary treatment specifically includes: the centrifuge 1.2 discharges free liquid or fine solid particles respectively according to different centrifugal forces applied to solid and liquid particles in the first residue-soil slurry, and the larger solid particles are precipitated to form a particle layer and are pushed out spirally.
Further, as shown in fig. 2, the step 4 of subjecting the second slurry to a secondary treatment by the concentration device 1.3 specifically comprises: the refining apparatus 1.3 separates the second sludge slurry again, so that the centrifuge 1.2 and the refining apparatus 1.3 effect a centrifugal circulation of the sludge slurry.
Further, as shown in fig. 2, step 5 is included before the third slurry is inserted into the waste slurry identification system 2; and automatically judging the slurry performance of the third slag-soil slurry according to the stratum where the shield machine 9 is located during tunneling, and executing the step 6 or the step 7.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A slurry shield muck treatment system, comprising: the system comprises a residue-soil separation system, a waste slurry identification system, a waste slurry conversion system, a filter pressing device, a waste residue pool and a residue-soil recovery system;
the residue and soil separation system comprises vibration roughing equipment, a centrifugal machine and fine selection equipment; the inlet end of the vibration roughing device is communicated with the output end of the residue soil slurry pool, the outlet end of the vibration roughing device is respectively communicated with the waste residue pool and the feed inlet of the centrifugal machine, the vibration roughing device is used for separating solid particles and liquid with large particle diameters in the residue soil slurry, the centrifugal machine separates the solid particles and the liquid with small particle diameters in the residue soil slurry after being processed by the vibration roughing device, the discharge outlet of the vibration roughing device is respectively communicated with the waste residue pool and the inlet end of the refining device, the refining device separates cohesive soil particles and liquid from the residue soil slurry after being processed by the centrifugal machine, the outlet end of the refining device is respectively communicated with the waste residue pool and the centrifugal machine, and the vibration roughing device, the centrifugal machine and the refining device convey the separated particles to the waste residue pool;
the waste slurry identification system comprises a waste slurry detection box, a test unit and a display; the waste slurry detection box receives the residue soil slurry processed by the residue soil separation system, the test unit is arranged at the top of the waste slurry detection box and consists of a specific gravity sensor, a viscosity sensor and a PH sensor, the test unit carries out index evaluation on the residue soil slurry flowing into the detection box and outputs an index evaluation result to the display, the display displays the evaluation result to a user, and the waste slurry identification system conveys the residue soil slurry meeting the index to the waste slurry conversion system through a pipeline and a pipeline valve;
the waste slurry conversion system comprises a waste slurry tank, a filtering tank and a slurry mixing tank; the feed ends of the waste slurry tank and the filter tank are respectively communicated with the pipeline valve, the discharge end of the waste slurry tank is communicated with the filter pressing equipment, and the liquid outlet end of the filter tank is communicated with the liquid inlet of the slurry mixing tank;
the filter pressing equipment comprises a filter press; the feeding end of the filter press is communicated with the discharging end of the waste slurry tank, the discharging end of the filter press is provided with a first discharging end and a second discharging end, the first discharging end is communicated with the slurry mixing tank, the second discharging end is communicated with the waste slag tank, and the filter press is used for carrying out solid-liquid separation on the soil-slag slurry conveyed by the discharging end of the waste slurry tank and outputting the soil-slag slurry through the first discharging end and the second discharging end respectively;
the waste residue pool receives solid particles discharged by the residue-soil separation system and the filter pressing equipment, and the solid particles are conveyed to the residue-soil recovery system through a conveyor belt after being pretreated;
the muck recovery system comprises a muck drying device and a muck sintering device; the feed inlet of dregs drying device with the conveyer belt links up, the discharge gate with dregs sintering device's feed inlet passes through the conveyer belt links up, dregs drying device will separate out the clay granule after the solid particle is dried, dregs sintering device will the porous brick is made in the sintering of clay granule.
2. The slurry shield muck treatment system of claim 1, wherein the vibratory roughing apparatus comprises: a vibration motor and a vibrating screen;
the vibrating motor is electrically connected with the vibrating screen, the vibrating motor provides periodic inertia force required by vibration, and the vibrating screen performs intermittent vibration and separates solid particles with certain particle sizes.
3. The slurry shield muck treatment system of claim 1, wherein the waste slurry conversion system further comprises: a pulping material pond;
the materials stored in the pulping material pond comprise: the special shield grouting agent, bentonite and fly ash are used for guiding a pulping material into the pulp mixing tank to realize the conversion from waste pulp to grouting pulp.
4. The slurry shield muck treatment system of claim 1, wherein the filter press device further comprises: a filter medium;
the solid particles obtained by filtering the filter medium are mainly clay particles with the particle diameter of less than 20 mu m, and the solid particles are extruded to form a filter cake.
5. The slurry shield muck treatment system of claim 2, wherein the shaker comprises: a first shaker cyclone and a second shaker cyclone;
the first vibrating screen swirler is communicated with the second vibrating screen swirler, untreated slag-soil slurry passes through the first vibrating screen swirler and the second vibrating screen swirler to be separated, and solid particles with particle diameters larger than 2mm and the slag-soil slurry with particle diameters smaller than 2mm are obtained.
6. A slurry shield muck treatment method is characterized by comprising the following steps:
step 1, mixing shield muck generated in slurry shield construction with a dispersing agent and water, and pouring the mixture into a muck slurry pool to obtain muck slurry;
step 2, separating the untreated muck slurry;
step 2.1, separating the untreated slag-soil slurry by the first vibrating screen swirler and the second vibrating screen swirler to respectively obtain solid particles with the particle diameter larger than 2mm and the first slag-soil slurry with the particle diameter smaller than 2 mm;
2.2, respectively conveying the first muck slurry to the waste slag pool and the centrifuge through pipelines for separation;
step 3, carrying out primary treatment on the first residue slurry conveyed to the centrifuge, separating solid particles with the particle diameter of more than 74 mu m and less than 2mm, and obtaining a second residue slurry of sandy particles;
step 4, conveying the second silt slurry of sandy particles to the concentration equipment for secondary treatment to separate out cohesive soil particles with particle diameters of more than 20 microns and less than 74 microns and obtain a third silt slurry of clay particles;
step 5, connecting the third slag-soil slurry of the clay particles into the waste slurry identification system, and judging the grouting slurry of the third slag-soil slurry of the clay particles;
step 5.1, index evaluation such as specific gravity, viscosity and the like is carried out on the third slag slurry flowing into the waste slurry detection box according to a specific gravity sensor, a viscosity sensor and a PH sensor arranged in the test unit, and whether the third slag slurry meets the requirement of grouting materials or not is automatically judged;
step 5.2, respectively conveying the third slag-soil slurry meeting the requirements of grouting materials and not meeting the requirements of the grouting materials to the waste slurry conversion system through the pipelines;
step 6, the third slag-soil slurry which meets the requirements of grouting materials and does not meet the requirements of the grouting materials is respectively conveyed into a filter tank and a waste slurry tank by the waste slurry conversion system through pipeline valves;
step 6.1, conveying the third slag-soil slurry meeting the requirements of grouting materials into a filter tank for filtering suspended matters, guiding the filtered third slag-soil slurry into a slurry mixing tank, adding a special shield grouting agent, bentonite, fly ash and other pulping materials into the slurry mixing tank through a pulping material tank, and preparing into grouting slurry meeting the requirements;
step 6.2, injecting the grouting slurry meeting the requirements into a shield tunneling machine through the pipeline to realize the conversion from the waste slurry to the grouting slurry;
step 6.3, conveying the third slag-soil slurry which does not meet the requirements of grouting materials into the waste slurry tank, and discharging the third slag-soil slurry into the filter pressing equipment through the discharge end after precipitation;
step 7, performing filter pressing treatment on the third slag-soil slurry which does not meet the requirement of a grouting material by using filter pressing equipment;
step 7.1, performing solid-liquid separation on the third residue soil slurry which does not meet the requirements of grouting materials by using the filter press, and filtering a liquid part and then flowing into the slurry mixing tank;
step 7.2, filtering the solid part again by the filter medium to obtain clay particles with the particle diameter of less than 20 microns, and conveying the clay particles to the waste slag pool;
step 8, conveying all the received solid particles to the residue soil recovery system through the conveying belt by the waste residue pool;
step 9, the waste residue recovery system carries out regeneration treatment on waste residue to realize harmless recovery and treatment;
step 9.1, drying the waste residue by the waste residue drying device to obtain recyclable waste residue;
and 9.2, sintering and extruding the recyclable muck through the muck sintering device and the extruder. Obtaining the porous brick for the building.
7. The slurry shield muck treatment method according to claim 6, wherein the step 2 of separating the untreated muck slurry by a muck separation system is specifically as follows: and (3) intermittently vibrating and separating the untreated muck slurry through the vibrating screen.
8. The slurry shield muck treatment method according to claim 6, wherein the first muck slurry with the particle diameter of less than 2mm in step 2.1 is specifically: gravel and broken stone brought out by circulating of mud and water.
9. The slurry shield muck treatment method according to claim 6, wherein the step 3 of conveying the first muck slurry to the centrifuge 1.2 for primary treatment specifically comprises: the centrifuge 1.2 discharges free liquid or fine solid particles respectively according to different centrifugal forces applied to solid and liquid particles in the first residue-soil slurry, and the larger solid particles are precipitated to form a particle layer and are pushed out spirally.
10. The slurry shield muck treatment method according to claim 8, wherein before the step 5 of connecting the third muck slurry to the waste slurry identification system, further comprising; and automatically judging the slurry performance of the third slag-soil slurry according to the stratum where the shield machine is located during tunneling, and executing the step 6 or the step 7.
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