CN107417066A - A kind of mud disposal system and method for shield engineering construction - Google Patents
A kind of mud disposal system and method for shield engineering construction Download PDFInfo
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- CN107417066A CN107417066A CN201710651413.XA CN201710651413A CN107417066A CN 107417066 A CN107417066 A CN 107417066A CN 201710651413 A CN201710651413 A CN 201710651413A CN 107417066 A CN107417066 A CN 107417066A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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Abstract
The present invention provides a kind of mud disposal system and method for shield engineering construction, and it includes：Mud piece-rate system, for mud to be separated into processing water and dregs；Blended size system processed, clean water tank are connected with full-automatic pulping system, and mud is prepared by full-automatic pulping system；Useless slurry processing system, tail water treatment system.Construction method comprises the following steps：S1, mud-water separation；S2, prepare mediation mud；S3, useless slurry processing；S4, tail water processing, by above step, realize that shield engineering construction produces the circulation and harmless treatment of mud.The advantages of the present invention are：Integrated level is high, realize the fine harmless treatment of mud and water, obtain satisfactory dregs, the outer draining for consolidating mud cake and meeting environmental quality requirement and the recycle-water for meeting construction process requirement, not only avoid the generation of secondary pollution, outer water vent can reuse.Reduce resource conveying capacity, enable engineering transport power be assigned to other can not be in the resource of reuse.
Description
Technical field
The present invention relates to mud conditioning field, the particularly a kind of mud disposal system and method for shield engineering construction.
Background technology
Need to realize Ni Shui Fen Li ﹑ rivers lake Qing silt Shu Jun ﹑ urban pipe network sludge in mud or construction slurry process field
Subtract and the processing such as the dry row's ﹑ sludge from wastewater treatment plant desanding of ﹑ tails ore deposit are managed at quantization, the slurries requirement after processing reaches discharge standard
Or the standard of recycling, solid slag carry out Tian Mai ﹑ burnings or recycling.
Traditional pulping system uses artificial loading, significantly increases the labor intensity of worker, external automatic system
It is high to starch system cost, so developing the domestic full-automatic pulping system with independent intellectual property right just seems increasingly important.
The method that traditional blended size system uses concrete stock tank, floor space is big, in being constructed in future city, construction
Place is more and more narrower and small, how to make full use of space to be just particularly important.
Harmless treatment is not carried out for the discarded mud cemented out in shield circulation system, and these are discarded
Mud and water therein all contain many pollutants, and traditional processing mode is landfill disposal, the especially great landslide in certain dregs field
Accident proposes warning, if the processing that these mud are not carried out with science is disposed, secondary pollution is easily caused, again to environment
Damage, or even cause a serious accident, cause casualties and great economic loss.Therefore, rational method is taken, it is right
Caused discarded slurry carries out harmless treatment, and enables, by recycling, just to seem extremely important.It is and conventional at present
Belt press filtration, centrifugal dehydration and plate compression handling process then fail to resolve production process interval, discontinuous problem, and
During caused water it is untreated just directly discharge.
The A of Chinese patent literature CN 105152517 describe a kind of mud disposal system, it is possible to increase the processing effect of mud
Rate, the automation balance of liquid level is realized, but the clear water after handling directly discharges, and wastes larger.And reuse needs to be handled,
Just meet the requirement of shield engineering construction.It is single because caused discarded slurry material difference is larger under different geological conditions
Process route can not also meet the requirement of shield engineering construction.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of mud disposal system and method for shield engineering construction, energy
Enough make that the muddy water in mud caused by shield construction process is continuous, efficiently separates, and caused mud, water can be entered respectively
Continuous, the harmless, safe handling of row, part, which handles water and mud, can be sent into shield machine cycling and reutilization.
In order to solve the above technical problems, the technical solution adopted in the present invention is：At a kind of mud of shield engineering construction
Reason system, it includes：
Mud piece-rate system, for mud to be separated into processing water and dregs；
Blended size system processed, clean water tank are connected with full-automatic pulping system, and mud is prepared by full-automatic pulping system, full-automatic system
Slurry system and mud piece-rate system are connected with adjustment mud pit, and adjustment mud pit is connected by pipeline with shield machine；
Useless slurry processing system, adjustment mud pit are also connected with filter press by pipeline, adjust and be provided between mud pit and filter press
Slurry tank to be pressed, device for preparing flocculating agent are connected by pipeline with slurry tank to be pressed；
Tail water treatment system, the filtrate (liquid of filter press are connected with filtrate pond, and filtrate pond is connected with regulation pH value device, is adjusted
Section pH value device is connected with reuse pool.
In preferable scheme, in described mud piece-rate system, shield machine is connected with the charging aperture of pre-sifted separating device, pre-sifted
The sieve of separating device has the first slurry storage tank, and the first slurry storage tank passes through the first delivery pump and the inlet of the first cyclone separation device
Connection, the bottom of the first cyclone separation device are connected with the charging aperture of dehydration screen device, the first cyclone separation device liquid outlet and
The import connection of first spill box, the sedimentation port of the first spill box are connected with the first slurry storage tank by liquid level regulation device, and first
The overfall of spill box is connected with the second slurry storage tank；
Second slurry storage tank is connected by the second delivery pump with the inlet of the second cyclone separation device, the second cyclone separation device
Bottom is connected with being dehydrated the charging aperture of screen device, and the liquid outlet of the second cyclone separation device is connected with the import of the second spill box,
The sedimentation port of second spill box is connected with the second slurry storage tank by liquid level regulation device, overfall and the adjustment mud of the second spill box
Starch case connection；
The first belt of weighing conveyer is provided with the cinder notch of leading of pre-sifted separating device and dehydration screen device.
In preferable scheme, clean water tank is connected by flush water pump with multiple jetting machines, and jetting machine is against in advance
The compass screen surface of screening plant and dehydration screen device.
In preferable scheme, in described full-automatic pulping system, bentonite storage tank passes through conveying device and meausring apparatus
Connection, meausring apparatus are connected with blending tank, and blending tank is connected by pump with new slurry tank.
In preferable scheme, be additionally provided with full-automatic chemical pulping system, full-automatic chemical pulping system by chemical pumping with
Adjust mud pit connection.
In preferable scheme, described clean water tank or new slurry tank are made up of multiple enamel assembling tank parallel connections, in newly slurry tank
Bottom is provided with the impeller that diagonal reversely liquidates.
In preferable scheme, hole mud pit is additionally provided with back, hole mud pit is returned and is connected with adjustment mud pit by high-order communicating pipe
It is logical, return hole mud pit and be connected with shield machine；
Described time hole mud pit and adjustment mud pit is in series for the mud box unit of multiple formed objects, adjusts mud pit
Each mud box unit between connected by low level communicating pipe.
A kind of slurry process of mud disposal system using above-mentioned shield engineering construction, comprises the following steps：
S1, mud-water separation；
(1) shield machine cuts the mud come and isolates processing water and dregs by mud piece-rate system；
S2, prepare mediation mud；
Clear water in clean water tank injects full-automatic pulping system, prepares mud；
Mud after preparing is sent into new slurry tank, and adjustment mud pit is sent to after standing a period of time, adjusts the slurry in mud pit
Hydrorrhea flow to back hole mud pit, is then fed into shield machine；
When shield machine normally tunnels in gravel layer, fine sand layer, the dirty slurry of discharge meets shield by the processing of mud piece-rate system
Structure machine requirement, it is sent directly into adjustment mud pit；
When shield machine is in silt, argillic horizon driving, mud piece-rate system is not enough to mud balance being down in zone of reasonableness, leads to
Cross adjustment pump and the mud that mud piece-rate system separates is sent directly into slurry tank to be pressed；
S3, useless slurry processing
The useless slurry of adjustment mud pit is sent to slurry tank to be pressed, and filter press is sent to after the mud in pressure slurry tank is by flocculation
Press filtration；
S4, tail water processing
After the filtrate water of filter press enters filtrate pond, being pumped into by filtrate water in hydrochloric acid mixing device makes filtrate water water body
PH value be adjusted to 7-8, tail water after the regulation of tail water adjusting means can beyond row or reuse；
By above step, realize that shield engineering construction produces the circulation and harmless treatment of mud.
In preferable scheme, the cinder notch of leading of pre-sifted separating device, dehydration screen device in mud piece-rate system sets first to claim
Weight belt conveyor；
In the slag-drip opening of filter press, the second belt of weighing conveyer is set；
Weighed by the mud cake discharged to the discharge dregs and filter press of pre-sifted separating device and dehydration screen device, calculate shield
Machine, which whether there is, backbreaks.
In preferable scheme, when because Geological Reasons need chemical slurry, full-automatic chemical pulping system presses proportioning by water
Xie Pin is input to adjustment mud pit；
Described hydrolysis product are one or more combinations in carboxymethyl cellulose and hydrolyzed polyacrylamide.
The mud disposal system and method for a kind of shield engineering construction provided by the invention, compared with prior art, this hair
The advantages of bright and beneficial effect are：
1st, method and technology integrated level of the invention is high, focuses on polytechnic collocation, can efficiently, continuously carry out shield engineering
The mud-water separation of mud, and realize the fine harmless treatment of mud and water, obtain satisfactory dregs, consolidation mud cake with
And the outer draining for meeting environmental quality requirement and the recycle-water for meeting construction process requirement, the generation of secondary pollution is not only avoided,
Meet higher environmental requirement, and after obtained dregs, mud cake can also being handled, as resource reutilization, and outside
Water vent can reuse.It the method achieve the innoxious and recycling treatment of mud caused by shield engineering.
2nd, when method of the invention is applied to fairly large shield engineering, due to the reuse of part resource, money is reduced
Source conveying capacity, enable engineering transport power be assigned to other can not be in the resource of reuse, so as to preferably shorten shield work
The journey construction period.
3rd, system of the invention uses the box blended size system of mud first, compact-sized, high concentration, maintains easily, accounts for
Ground area is small, and the unit used in whole system is common device, device and their combination, cost relative moderate.
4th, using the system and method for the present invention, it can effectively assess whether shield machine backbreaks.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the equipment and general flow chart of the present invention.The direction of arrow represents Flow of Goods and Materials direction.
Fig. 2 is the front view of blended size system processed in the present invention.
Fig. 3 is the top view of blended size system processed in the present invention.
Fig. 4 is to return hole mud pit in the present invention and adjust the combining structure schematic top plan view of mud pit.
Fig. 5 is Fig. 4 M direction views.
Fig. 6 is the main structure diagram of full-automatic chemical pulping system in the present invention.
Fig. 7 is the overlooking the structure diagram of full-automatic chemical pulping system in the present invention.
In figure：Shield machine 1, mud piece-rate system 2, pre-sifted separating device 201, the first slurry storage tank 202, the first spill box 203,
First cyclone separation device 204, it is dehydrated screen device 205, the first delivery pump 206, the second delivery pump 207, the second cyclonic separation dress
Put 208, the second spill box 209, the second slurry storage tank 210, the first belt of weighing conveyer 3, clean water tank 4, clarified water pump 5, automatically
Pulping system 6, it is new to starch tank 7, tonified the slurry pump 8, mud pit 9 is adjusted, return hole mud pit 10, full-automatic chemical pulping system 11, chemistry
Pump 12, hole pump 13 is returned, adjust pump 14, slurry tank 15 to be pressed, filter press 16, device for preparing flocculating agent 17, filtrate pond 18, filtrate
Water pump 19, hydrochloric acid mixing device 20, tail water adjusting means 21, impeller 22, reuse pool 23, reuse pump 24, supersonic liquid level
Meter 25, the second belt of weighing conveyer 26, flush water pump 27, jetting machine 28, high-order communicating pipe 29, low level communicating pipe 30.
Embodiment
Embodiment 1：
In Fig. 1 ~ 7, a kind of mud disposal system of shield engineering construction, it includes：
First, mud piece-rate system 2, for mud to be separated into processing water and dregs；
Preferably, the concrete structure of mud piece-rate system 2 is：
In Fig. 1, in described mud piece-rate system 2, shield machine 1 is connected with the charging aperture of pre-sifted separating device 201, pre-sifted packing
The sieve for putting 201 has the first slurry storage tank 202, and the first slurry storage tank 202 passes through the first delivery pump 206 and the first cyclone separation device
204 inlet connection, the bottom of the first cyclone separation device 204 are connected with being dehydrated the charging aperture of screen device 205, the first eddy flow
The liquid outlet of separator 204 is connected with the import of the first spill box 203, the sedimentation port and the first slurry storage tank of the first spill box 203
202 are connected by liquid level regulation device, and the overfall of the first spill box 203 is connected with the second slurry storage tank 210；
Second slurry storage tank 210 is connected by the second delivery pump 207 with the inlet of the second cyclone separation device 208, the second eddy flow
The bottom of separator 208 is connected with being dehydrated the charging aperture of screen device 205, the liquid outlet of the second cyclone separation device 208 and the
The import connection of two spill boxes 209, the sedimentation port of the second spill box 209 are connected with the second slurry storage tank 210 by liquid level regulation device
Connect, the overfall of the second spill box 209 is connected with adjustment mud pit 9；
The first belt of weighing conveyer 3 is provided with the cinder notch of leading of pre-sifted separating device 201 and dehydration screen device 205, the first of setting
Weight of the belt of weighing conveyer 3 due to obtaining dregs, is easy to assess whether shield machine backbreaks.Preferably, the mud in this example
The size of piece-rate system is long 16.6m × wide 11.4m × high 14.4m.The equipment combination of mud piece-rate system 2 and technological process rule
Draw it is relatively reasonable, be easy to implement continuous separation.Overall structure is more compact, is easily installed and arranges.
In preferable scheme, clean water tank 4 is connected by flush water pump 27 with multiple jetting machines 28, jetting machine 28
Against pre-sifted separating device 201 and the compass screen surface of dehydration screen device 205.Thus structure, it is ensured that pre-sifted separating device 201 and dehydration screen device
205 screen surface clean, it is ensured that realize continuous work.
2nd, in blended size system processed such as Fig. 1 ~ 3, clean water tank 4 is connected with full-automatic pulping system 6, passes through full-automatic slurrying system
System 6 prepares mud, full-automatic pulping system 6 and mud piece-rate system 2 and is connected with adjustment mud pit 9, and adjustment mud pit 9 passes through pipe
Road is connected with shield machine 1；
In preferable scheme, in described full-automatic pulping system 6, bentonite storage tank is connected by conveying device and meausring apparatus
Connect, meausring apparatus is connected with blending tank, and blending tank is connected by pump with new slurry tank 7.A certain shield engineering, tunneled in shield machine
Before, the clear water in clean water tank 4, which is injected by clarified water pump 5 in the blending tank of full-automatic pulping system 6, carries out new slurry preparation.This example
In, the conveying device below bentonite storage tank uses conveying worm, tilts the top for being delivered to static weighing device, spiral transferring
Send the discharging opening of machine that closed flexible chute is set, it is ensured that the equipment at top does not interfere with the weighing essence of static weighing device
Degree, clarified water pump 5 are provided with rotary angle transmitter, such as absolute value transducer, by calculating clarified water pump 5 or driving clear water pump motor
Corner, clear water injection rate is calculated in control device such as PLC, can also pass through the liquid level gauge in blending tank and obtains clear water and note
Enter amount, then static weighing device adds bentonite by proportioning, and static weighing device is provided with the material of pressure sensor using bottom
Bucket, or turnover plate type weighing sensor.The mass ratio that specified bentonite and clear water can be realized is preferably 1:16.
The mud pumping prepared is stood 15~20 hours, by abundant sodium to new slurry tank by full-automatic pulping system
Adjustment mud pit 9 is sent into by tonified the slurry pump after change processing, the slurries adjusted in mud pit 9 are overflowed to back in hole mud pit 10.
In this example, the size of full-automatic pulping system：Long 8 × wide by 7 × high 12 meters, slurrying capacity 50m3/h.
In preferable scheme such as Fig. 1,6,7, full-automatic chemical pulping system 11, full-automatic chemical pulping system 11 are additionally provided with
It is connected by chemical pumping 12 with adjustment mud pit 9.The slurries prepared by full-automatic pulping system are sent into adjustment mud pit 9.
Full-automatic chemical pulping system is defeated after can be used for the powderies such as cement, bentonite, CMC, the full-automatic aquation of granulated material uniformly
Send.
In preferable scheme, when because Geological Reasons need chemical slurry, full-automatic chemical pulping system 11 will by proportioning
Hydrolysis product are input to adjustment mud pit 9；Described hydrolysis product are carboxymethyl cellulose (CMC) and hydrolyzed polyacrylamide (PHP)
In one or more combinations.
The CMC in the explosive barrel of full-automatic chemical pulping system 11 according to hydrolysis the product dosage of drug account for bentonite quality 1~
2% is sent into adjustment mud pit 9 by chemical pumping 12, and PHP hydrolysis product are pumped into adjustment mud according to 3~the 5 ‰ of bentonite quality by chemistry
Starch case, and the gas agitating apparatus by being set in adjustment mud pit 9 stir after with time hole pump 13 be sent into underground shield machine 1
Place.In this example, the size of chemical pulping system：Long 5.4m × wide 3.8m × high 3.9m.
3rd, useless slurry processing system, adjustment mud pit 9 are also connected by pipeline with filter press 16, adjust mud pit 9 and press filtration
Slurry tank 15 to be pressed is provided between machine 16, device for preparing flocculating agent 17 is connected by pipeline with slurry tank 15 to be pressed；
The mud sized mixing in mud pit 9 is in course of adjustment, and has useless slurry or unnecessary mud produces, these mud can not be random
Outer row.To reach the standard of safety dumping, these mud must be fully processed.Because contained almost all is eddy flow in mud
The fine particle that device can not separate, therefore handled using filter press.Before mud enters filter press, by flocculant system
The parameter that standby device 17 treats mud in pressure slurry tank 15 is adjusted improvement, and the mode of improvement is chemical flocculation, that is, is mixed
Process and flocculation reaction process, the system design be according to concentration be 2 ‰ organic polymer coargulators with concentration be 5% it is inorganic
The flow that dispersant adds by several times is set.
Described flocculant is the mixture of any one in polyacrylamide or aluminium polychloride, or both.
In preferable scheme such as Fig. 4,5, described clean water tank 4 or new slurry tank 7 are made up of multiple enamel assembling tank parallel connections,
The bottom of new slurry tank 7 is provided with the impeller 22 that diagonal reversely liquidates.
In preferable scheme such as Fig. 4,5, hole mud pit 10 is additionally provided with back, hole mud pit 10 is returned and passes through with adjustment mud pit 9
High-order communicating pipe 29 connects, and high-order communicating pipe 29 incite somebody to action the two close to the position returned hole mud pit 10 and adjusted at the top of mud pit 9
Connection, return hole mud pit 10 and be connected by returning hole pump 13 with shield machine 1；
Described time hole mud pit 10 and adjustment mud pit 9 is in series for the mud box unit of multiple formed objects, adjusts mud
Connected between each mud box unit of slurry case 9 by low level communicating pipe 30, low level communicating pipe 30 is close to mud box unit
Bottom position will connect between each mud box unit.Preferably, adjust in mud pit 9 and be provided with gas agitating apparatus, pass through gas mixing
Mixing device is well mixed mud.
In preferable scheme, new starch is provided with tank 7, clean water tank 4, full-automatic pulping system 6 and slurry tank to be pressed 15
Ultrasonic level gage.
4th, tail water treatment system, the filtrate (liquid of filter press 16 are connected with filtrate pond 18, filtrate pond 18 and regulation PH
It is worth device, preferably hydrochloric acid mixing device 20 is connected, and hydrochloric acid mixing device 20 is connected with reuse pool 23.
While filtrate water in filtrate pond 18 is pumped to hydrochloric acid mixing device 20 through filtrate water pump 19, by adding regulation
Agent device adds hydrochloric acid into hydrochloric acid mixing device 20, system according to two PH instrument (pH value before its Instrumental PH1 monitoring dosings,
PH value after instrument PH2 monitoring dosings), control system PLC calculates measuring pump and adds frequency automatically.PH1 instantaneous values are set in the PH1 upper limits
When more than definite value, measuring pump is directly run with 50HZ；PH1 instantaneous values PH1 lower limit set values it is following when measuring pump stop；
PH1 real time datas are between upper and lower bound, and measuring pump is first run with 30HZ, and PH2 instantaneous values are more than PH2 upper limit set values
When, metering pump frequency increase increases a frequency modulation radix each second, until 50HZ；When PH2 real time datas are below PH2 lower limits,
Measure pump frequency and reduce one frequency modulation radix of reduction each second, until 0HZ;When PH2 values are between upper and lower bound, measuring pump
Maintain current frequency operation.When being run under measuring pump automatic mode, once, metering pump diaphragm is broken the every eight hour rotations of measuring pump
Another metering pump operation is automatically switched to when splitting, while opens mixer and is stirred, stirs, makes hydrochloric acid mixing device
Water body in 20 is in neutral (i.e. pH values are 7).Tail water is flowed into tail water adjusting means 21 after hydrochloric acid is fully adjusted, and tail water is adjusted
Filler in regulating device 21 is handled the tail water after regulation, and what is obtained after the processing of tail water adjusting means outer is drained into back
Millpond, the reuse of slurry tank 15 to be pressed is pumped into through reuse pump 24.
5th, in addition to centralized control system
One ~ tetra- above-mentioned system is equipped with native operating sys-tern by machine, has local/remote translation function.In remote mode
Under, equipment is controlled by host computer and central control board；Under local mode, PLC and industrial computer independently work can be completely disengaged
Make and operate, by local control cabinet button start and stop equipment, ensure that the reliability of control system to greatest extent.Each function series
Set in system (sludge-water separating system, blended size system processed, useless slurry processing system and tail water treatment system etc.) local control panel and promptly stop
Machine switchs, for overhaul of the equipments or live emergency operation.All devices selecting switch is switched to " long-range " during normal production, by center
The host computer remote monitoring of control room.
Embodiment 2：
On the basis of embodiment 1, a kind of slurry process of mud disposal system using above-mentioned shield engineering construction,
Comprise the following steps：
S1, mud-water separation；
(1) shield machine cuts the mud come and isolates processing water and dregs by mud piece-rate system 2；
S2, prepare mediation mud；
Clear water in clean water tank 4 injects full-automatic pulping system 6, prepares mud；
Mud after preparing is sent into new slurry tank 7, and adjustment mud pit 9 is sent to after standing a period of time, is adjusted in mud pit 9
Ororrhea flow to back hole mud pit 10, is then fed into shield machine 1；
When shield machine 1 normally tunnels in gravel layer, fine sand layer, the dirty slurry of discharge meets by the processing of mud piece-rate system 2
The requirement of shield machine 1, it is sent directly into adjustment mud pit 9；
When shield machine is in silt, argillic horizon driving, mud piece-rate system 2 is not enough to mud balance being down in zone of reasonableness,
The mud that mud piece-rate system 2 separates is sent directly into slurry tank 15 to be pressed by adjusting pump 14；
S3, useless slurry processing
The useless slurry of adjustment mud pit 9 is sent to slurry tank 15 to be pressed, and is sent to after the mud in pressure slurry tank 15 is by flocculation
The press filtration of filter press 16；
S4, tail water processing
After the filtrate water of filter press 16 enters filtrate pond 18, being sent to by filtrate water pump 19 in hydrochloric acid mixing device 20 makes filter
The pH value of liquid water water body is adjusted to 7-8, and tail water can row or reuse in addition after the regulation of tail water adjusting means 21；
By above step, realize that shield engineering construction produces the circulation and harmless treatment of mud.
In preferable scheme, the cinder notch of leading of pre-sifted separating device 201, dehydration screen device 205 in mud piece-rate system 2 is set
First belt of weighing conveyer 3；
In the slag-drip opening of filter press 16, the second belt of weighing conveyer 26 is set；
Weighed by the mud cake discharged to the discharge dregs and filter press 16 of pre-sifted separating device 201 and dehydration screen device 205,
Calculating shield machine 1, which whether there is, backbreaks.
In preferable scheme, when because Geological Reasons need chemical slurry, full-automatic chemical pulping system 11 will by proportioning
Hydrolysis product are input to adjustment mud pit 9；
Described hydrolysis product are one or more combinations in carboxymethyl cellulose and hydrolyzed polyacrylamide.
Pending shield engineering slurry and dregs in the present embodiment, mud cake and outer draining are detected, its phase
Related parameter is as shown in table 1, table 2 and table 3：
The relevant parameter for the dregs that the sludge-water separating system of table 1 is separated
Maximum dry density (g/cm3) moisture content
Layer of sand argillic horizon mixing stratum
1.84 ≤20%-25% ≤28%-35% ≤28%-32%
According to design requirement, slag soil's water content is less than 40%, it can be seen that, the dregs obtained by the present embodiment reaches design will
Ask.
The useless slurry processing system of table 2 is press-filtered out the relevant parameter of the filter cake come
Maximum dry density (g/cm3) seven days unconfined compressive strengths (MPa) of moisture content
1.84 35.4% 0.15
According to design requirement, the moisture content for being press-filtered out the mud cake come is less than 40%, and unconfined compressive strength is not less than within 7 days
100KPa.As can be seen here, the cachaza obtained by the present embodiment reaches design requirement.
The relevant parameter of the filtrate water of table 3
Sequence number surveys the class water quality standard value of index flocculation treatment supernatant liquor earth's surface three
1 pH 6.6 6-9
2 permanganate indiceses (mg/L) 4.51 6
3 CODs (mg/L) 15.5 20
4 five-day BODs (mg/L) 2.9 4
5 ammonia nitrogens (mg/L) 0.125 1
6 total phosphorus (mg/L) 0.123 0.2
7 total nitrogens (mg/L) 0.57 1
8 total copper (mg/L) 0.0155 1
9 total zinc (mg/L) 0.0067 1
10 total selenium (μm/L) 0.513 10
11 total arsenic (mg/L) 0.0113 0.05
12 total mercuries (μm/L) 0.0010 0.1
13 total cadmiums (mg/L) 0.0018 0.005
14 Cr VIs (mg/L) 0.00031 0.05
15 total lead (mg/L) 0.0282 0.05
16 alkyl mercurys, which must not detect, to be detected
17 benzo (a) pyrenes, which must not detect, to be detected
18 total nickel do not detect 1
19 total berylliums do not detect 0.005
20 total silver do not detect 0.5
21 totalαradioactivities do not detect 1Bq/L
22 Total Beta Radioactivities do not examine 10Bq/L
By upper table as can be seen that surveyed composition all allows concentration of emission far below national regulation highest, therefore produced after flocculation
Raw supernatant, meets discharging standards.
The present invention realizes the harmless treatment of mud caused by shield engineering, part mud or clear water direct reuse, and
Satisfactory dregs is finally given, mud cake is consolidated and meets the outer draining of environmental quality requirement.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as the limitation for the present invention, this hair
Technical characteristic in the technical scheme that bright protection domain should be recorded with claim, including the technical scheme of claim record
Equivalents are protection domain.Equivalent substitution i.e. within this range is improved, also within protection scope of the present invention.
Claims (10)
- A kind of 1. mud disposal system of shield engineering construction, it is characterized in that it includes：Mud piece-rate system（2）, for mud to be separated into processing water and dregs；Blended size system processed, clean water tank（4）With full-automatic pulping system（6）Connection, passes through full-automatic pulping system（6）Prepare mud Slurry, full-automatic pulping system（6）With mud piece-rate system（2）With adjusting mud pit（9）Connection, adjust mud pit（9）Pass through pipe Road and shield machine（1）Connection；Useless slurry processing system, adjust mud pit（9）Also pass through pipeline and filter press（16）Connection, adjust mud pit（9）With press filtration Machine（16）Between be provided with slurry tank to be pressed（15）, device for preparing flocculating agent（17）Pass through pipeline and slurry tank to be pressed（15）Connection；Tail water treatment system, filter press（16）Filtrate (liquid and filtrate pond（18）Connection, filtrate pond（18）With adjusting PH It is worth device connection, adjusts pH value device and reuse pool（23）Connection.
- 2. a kind of mud disposal system of shield engineering construction according to claim 1, it is characterized in that：Described mud point From system（2）In, shield machine（1）With pre-sifted separating device（201）Charging aperture connection, pre-sifted separating device（201）Sieve have First slurry storage tank（202）, the first slurry storage tank（202）Pass through the first delivery pump（206）With the first cyclone separation device（204）Enter Liquid mouth connects, the first cyclone separation device（204）Bottom with dehydration screen device（205）Charging aperture connection, the first eddy flow point From device（204）Liquid outlet and the first spill box（203）Import connection, the first spill box（203）Sedimentation port and first storage Stock tank（202）Connected by liquid level regulation device, the first spill box（203）Overfall and the second slurry storage tank（210）Connection；Second slurry storage tank（210）Pass through the second delivery pump（207）With the second cyclone separation device（208）Inlet connection, the Two cyclone separation devices（208）Bottom with dehydration screen device（205）Charging aperture connection, the second cyclone separation device（208） Liquid outlet and the second spill box（209）Import connection, the second spill box（209）Sedimentation port and the second slurry storage tank（210） Connected by liquid level regulation device, the second spill box（209）Overfall with adjustment mud pit（9）Connection；In pre-sifted separating device（201）With dehydration screen device（205）Cinder notch of leading be provided with the first belt of weighing conveyer（3）.
- 3. a kind of mud disposal system of shield engineering construction according to claim 2, it is characterized in that：Clean water tank（4）It is logical Cross flush water pump（27）With multiple jetting machines（28）Connection, jetting machine（28）Against pre-sifted separating device（201）With it is de- Water sieve device（205）Compass screen surface.
- 4. a kind of mud disposal system of shield engineering construction according to claim 1, it is characterized in that：Described is full-automatic Pulping system（6）In, bentonite storage tank is connected by conveying device with meausring apparatus, and meausring apparatus is connected with blending tank, mixing Tank passes through pump and new slurry tank（7）Connection.
- 5. a kind of mud disposal system of shield engineering construction according to claim 1 or 4, it is characterized in that：It is additionally provided with complete Robotics pulping system（11）, full-automatic chemical pulping system（11）Pass through chemical pumping（12）With adjusting mud pit（9）Connection.
- 6. a kind of mud disposal system of shield engineering construction according to claim 5, it is characterized in that：Described clean water tank （4）Or newly starch tank（7）It is made up of multiple enamel assembling tank parallel connections, in newly slurry tank（7）Bottom be provided with diagonal and reversely liquidate Impeller（22）.
- 7. a kind of mud disposal system of shield engineering construction according to claim 5, it is characterized in that：It is additionally provided with back hole mud Starch case（10）, return hole mud pit（10）With adjusting mud pit（9）Pass through high-order communicating pipe（29）Connection, return hole mud pit（10）With Shield machine（1）Connection；Described returns hole mud pit（10）With adjustment mud pit（9）It is in series for the mud box unit of multiple formed objects, adjust Whole mud pit（9）Each mud box unit between pass through low level communicating pipe（30）Connection.
- 8. one kind is using the mud conditioning side of the mud disposal system of the shield engineering construction described in any one of claim 1 ~ 7 Method, it is characterized in that comprising the following steps：S1, mud-water separation；(1) shield machine cuts the mud come and passes through mud piece-rate system（2）Isolate processing water and dregs；S2, prepare mediation mud；Clean water tank（4）In clear water inject full-automatic pulping system（6）, prepare mud；Mud after preparing is sent into new slurry tank（7）, adjustment mud pit is sent to after standing a period of time（9）, adjust mud pit （9）Interior ororrhea flow to back hole mud pit（10）, it is then fed into shield machine（1）；Work as shield machine（1）When gravel layer, fine sand layer normally tunnel, the dirty slurry of discharge passes through mud piece-rate system（2）Processing If meet shield machine（1）Requirement, it is sent directly into adjustment mud pit（9）It is interior；When shield machine is in silt, argillic horizon driving, mud piece-rate system（2）It is not enough to mud balance being down in zone of reasonableness When, by adjusting pump（14）By mud piece-rate system（2）The mud of separation is sent directly into slurry tank to be pressed（15）；S3, useless slurry processingAdjust mud pit（9）Useless slurry be sent to slurry tank to be pressed（15）, slurry tank to be pressed（15）After interior mud is by flocculation It is sent to filter press（16）Press filtration；S4, tail water processingFilter press（16）Filtrate water enter filtrate pond（18）Afterwards, filtrate water pump is passed through（19）It is sent to hydrochloric acid mixing device （20）In the pH value of filtrate water water body is adjusted to 7-8, tail water passes through tail water adjusting means（21）After regulation can beyond row or Reuse；By above step, realize that shield engineering construction produces the circulation and harmless treatment of mud.
- 9. a kind of slurry process of mud disposal system using shield engineering construction according to claim 8, its It is characterized in：In mud piece-rate system（2）Pre-sifted separating device（201）, dehydration screen device（205）Cinder notch of leading set and first weigh Belt conveyor（3）；In filter press（16）Slag-drip opening set the second belt of weighing conveyer（26）；By to pre-sifted separating device（201）With dehydration screen device（205）Discharge dregs and filter press（16）The mud cake of discharge enters Row is weighed, and calculates shield machine（1）With the presence or absence of backbreaking.
- 10. a kind of slurry process of mud disposal system using shield engineering construction according to claim 8, its It is characterized in：When because Geological Reasons need chemical slurry, full-automatic chemical pulping system（11）Hydrolysis product are input to by proportioning Adjust mud pit（9）；Described hydrolysis product are one or more combinations in carboxymethyl cellulose and hydrolyzed polyacrylamide.
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| CN201710651413.XA CN107417066A (en) | 2017-08-02 | 2017-08-02 | A kind of mud disposal system and method for shield engineering construction |
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| CN108533276A (en) * | 2018-04-03 | 2018-09-14 | 上海隧道工程有限公司 | Shield tunneling construction dregs monitoring device and dregs monitoring method |
| CN109158203A (en) * | 2018-09-13 | 2019-01-08 | 深圳市绿锦隆环保科技有限公司 | A kind of Spiral digging machine Slurry treatment technique |
| CN109516665A (en) * | 2019-01-15 | 2019-03-26 | 北京中矿环保科技股份有限公司 | Shield dregs dehydration equipment and shield dregs dewatering |
| CN110157446A (en) * | 2019-05-13 | 2019-08-23 | 中铁第五勘察设计院集团有限公司 | A kind of dispersing agent and preparation method thereof for improveing clay |
| CN110206551A (en) * | 2019-05-27 | 2019-09-06 | 北京交通大学 | The device and method that slurry-water balance type shield prototype muddy water circulation can be achieved |
| CN110357384A (en) * | 2019-05-20 | 2019-10-22 | 国家电网有限公司 | A kind of packaged type slurrying circulating treating system |
| CN112664210A (en) * | 2020-12-10 | 2021-04-16 | 中交疏浚技术装备国家工程研究中心有限公司 | Intelligent control system for muck treatment of earth pressure balance shield and application |
| CN112919766A (en) * | 2020-10-15 | 2021-06-08 | 上海天颢实业有限公司 | Muddy water treatment system and method |
| CN114149157A (en) * | 2021-12-17 | 2022-03-08 | 深圳市中科绿建环保工程有限公司 | Shield muck and mud treatment system and process method |
| CN114477700A (en) * | 2022-01-28 | 2022-05-13 | 三川德青工程机械有限公司 | Method for treating slurry shield slurry in complex geographic environment |
| CN114735906A (en) * | 2022-03-14 | 2022-07-12 | 浙江迅犀建设有限责任公司 | Drilling foundation treatment waste slurry solidification construction method |
| CN114853304A (en) * | 2022-01-28 | 2022-08-05 | 三川德青工程机械有限公司 | Slurry shield mud treatment system under complex geographic environment |
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| CN110206551A (en) * | 2019-05-27 | 2019-09-06 | 北京交通大学 | The device and method that slurry-water balance type shield prototype muddy water circulation can be achieved |
| CN112919766A (en) * | 2020-10-15 | 2021-06-08 | 上海天颢实业有限公司 | Muddy water treatment system and method |
| CN112664210A (en) * | 2020-12-10 | 2021-04-16 | 中交疏浚技术装备国家工程研究中心有限公司 | Intelligent control system for muck treatment of earth pressure balance shield and application |
| CN114149157A (en) * | 2021-12-17 | 2022-03-08 | 深圳市中科绿建环保工程有限公司 | Shield muck and mud treatment system and process method |
| CN114477700A (en) * | 2022-01-28 | 2022-05-13 | 三川德青工程机械有限公司 | Method for treating slurry shield slurry in complex geographic environment |
| CN114853304A (en) * | 2022-01-28 | 2022-08-05 | 三川德青工程机械有限公司 | Slurry shield mud treatment system under complex geographic environment |
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