CN106630249A - Automatic tunnel wastewater treatment system - Google Patents

Automatic tunnel wastewater treatment system Download PDF

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Publication number
CN106630249A
CN106630249A CN201610783981.0A CN201610783981A CN106630249A CN 106630249 A CN106630249 A CN 106630249A CN 201610783981 A CN201610783981 A CN 201610783981A CN 106630249 A CN106630249 A CN 106630249A
Authority
CN
China
Prior art keywords
water
pond
unit
waste water
processing system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610783981.0A
Other languages
Chinese (zh)
Inventor
杜泽君
武志强
王庆生
许克俊
张皓
李绍平
章征宝
桑翠江
杨思博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI TIANKANG EP EQUIPMENT Co Ltd
China Railway Eryuan Engineering Group Co Ltd CREEC
China Railway Economic and Planning Research Institute
Original Assignee
WUXI TIANKANG EP EQUIPMENT Co Ltd
China Railway Eryuan Engineering Group Co Ltd CREEC
China Railway Economic and Planning Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WUXI TIANKANG EP EQUIPMENT Co Ltd, China Railway Eryuan Engineering Group Co Ltd CREEC, China Railway Economic and Planning Research Institute filed Critical WUXI TIANKANG EP EQUIPMENT Co Ltd
Priority to CN201610783981.0A priority Critical patent/CN106630249A/en
Publication of CN106630249A publication Critical patent/CN106630249A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5209Regulation methods for flocculation or precipitation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities

Abstract

The invention discloses an automatic tunnel wastewater treatment system. The automatic tunnel wastewater treatment system comprises a wastewater adjusting pond, wherein a wastewater inlet is formed in the wastewater adjusting pond; a lift pump penetrates into the wastewater adjusting pond and is connected to an eddy flocculoreaction unit through a mixer; the upper part of the eddy flocculoreaction unit is connected to a shallow horizontal settling unit; the shallow horizontal settling unit is connected to a supervision pond via a floating filtration unit; a discharge outlet is formed in a side surface of the supervision pond; the bottom surface of the supervision pond is connected to a mud and water discharge collecting pond; and the bottoms of the eddy flocculoreaction unit, the shallow horizontal settling unit and the floating filtration unit are connected to the mud and water discharge collecting pond. The automatic tunnel wastewater treatment system has the characteristics of compact structure, modularization, small occupied space, low investment, speediness in mounting, high degree of automation, simplicity in maintenance, capability of being repeatedly used in different fields, and the like. The automatic tunnel wastewater treatment system is suitable for treating discharged wastewater in a tunnel construction process, a mine exploration process and a culvert construction process.

Description

A kind of tunnel waste water automated processing system
Technical field
The present invention relates to the technical field of sewage of Tunnel Engineering, specifically a kind of tunnel waste water automated processing system.
Background technology
With economic development and the needs of daily traffic, tunnel construction accordingly drastically increases.Tunnel Engineering is located at mountain mostly Area hilly country, some are even in potable water source district or waterhead conservation.Substantial amounts of construction can be produced in its work progress Waste water, if not processing waste water of constructing, is allowed to discharge, it will cause mountain area water environment pollution.
Wastewater source during constructing tunnel mainly has following several:During Tunnel Passing unfavorable geology unit, generation Water burst;Construction equipment, the such as waste water of rig generation;For the water of depositing dust after Tunnel Blasting and when skimming;Gunite concrete and Waste water and Bedrock Crevice Water of slip casting generation etc..In constructing tunnel draining, the suspended impurity such as a large amount of rock dust is entered in water, In discharge process, dissolubility impurity is oxidized in the water of part, and some materials are precipitated, and chemical property is changed, and tunnel is applied The water seepage in man-hour substantially belongs to underground water, additionally, due to by rig, gunite concrete and slip casting and other artificial produce Pollution, and the characteristics of with surface water;Major pollutants are the organic matter of the compositions such as suspension, petroleum-type and nitrobenzene.Tunnel The for example untreated direct discharge of road construction drainage, can both pollute surrounding environment, can cause physics and chemistry, ecology, scape to receiving water body again The harm such as sight.
Current main processing ways carry out natural subsidence based on precipitating by facilities such as sedimentation basin, sludge drying beds. The unreasonable part of process parameters design in prior art:Water unstable is caused out as the time of staying is short, volume is less than normal, load is excessive Or it is unqualified;Existing process equipment is excessively simple and is the outdoor arrangement of open type, and many places need to manually operate, so as to cause Go out water unstable, in addition it is unqualified;And potential safety hazard is larger;Because of job site narrow field, large sized complete sets of equipment is difficult to march into the arena, Lay, and potential safety hazard is larger.With sewage discharge carry mark policy put into effect, prior art can not meet carry mark after discharge will Ask.Main cause is:A, raw water quality water yield fluctuation range are big;B, due to being limited by place, equipment takes up an area big, original design sewage Total residence time is partially short, it is difficult to ensure that standard water discharge discharge;C, sewage discharge carry all kinds of index emission requests after mark and improve.
The content of the invention
The technical problem to be solved is to provide a kind of tunnel waste water automated processing system, the stain disease Jing systems After process, disclosure satisfy that current integrated wastewater discharge standard, and take up an area it is little, process after water stabilization, safer, automatic Change degree is high.
For achieving the above object, the present invention is employed the following technical solutions:
A kind of tunnel waste water automated processing system of the present invention, including wastewater equalization pond, on the wastewater equalization pond waste water is arranged Import, has elevator pump to go deep into the wastewater equalization pond;The elevator pump is connected to vortex flocculation reaction unit by blender;Institute The top for stating vortex flocculation reaction unit is connected to shallow-layer flat flow precipitation unit;The shallow-layer flat flow precipitation unit is through drift Floating filter element is connected to supervision pond;Supervision pond side is provided with floss hole, and bottom surface is connected to spoil disposal drainage collection pond;Institute The bottom for stating vortex flocculation reaction unit, shallow-layer flat flow precipitation unit and floating filter element is connected to spoil disposal draining receipts Ji Chi.
Further, the tunnel waste water automated processing system also includes flocculating agent throwing device, and the flocculating agent is added Device is used to add flocculating agent to the blender.The tiny suspended particulate of turbidity is with inorganic and organic colloid in composition water It is main, when being that particle ceaselessly makees Brownian movement in water the reason for be difficult, due to the like electricity that impurity particle surface is formed Lotus is mutually exclusive, it is impossible to attracts each other, increase weightening and sink, and is directed at impurities in water and is difficult to remove, it is impossible to meets discharge(Or make With)Require.Using flocculating agent is added in water, the surface charge of impurities in water particle is neutralized, make to be difficult the tiny of sinking in water , by coagulating coalescence into the larger alumen ustum of particle, flocculant can be to subparticle in water and alum for suspension, colourity, organic matter Flower carries out sieve and catches, builds bridge, and promotes suspended particulate increase, weightening.Then it is shorter using settling height, sedimentation time fewer shallow-layer Precipitation principle, coalescence is made in water under the impurity of bulky grain alumen ustum by the horizontal tube sedimentation basin for subsequently having High-rate sedimentation effect It is heavy, it is separated from water and is purified water quality.Still there is a small amount of fine particle impurity in precipitation water outlet, realize after filtering more thoroughly Removing.
Further, the tunnel waste water automated processing system also includes flocculating agent feeding device, the flocculant concentration Device is used to add flocculant to blender.
Further, the vortex flocculation reaction unit includes taper cone barrel, cylindrical drum, effluent weir, lamina tecti, the circular cone Cylinder is located at bottom, and the cylindrical drum, effluent weir, lamina tecti are installed upwards successively;The effluent weir arranges delivery port;The circular cone Water inlet and blowdown drain are set on cylinder.Further, the shallow-layer flat flow precipitation unit include water distribution section, precipitating phase and Water exit end;The water distribution section arranges water inlet, and the water exit end arranges delivery port;Arrange to flood in water exit end and vacate mill weir, In bottom, spoil disposal and drainpipe are set.To improve flocculating effect, using conical eddy current type flocculation reaction technology, water enters from bottom When entering rear swirling flow and diffusing up flowing, flow velocity is gradually decreased, and is formed with the vortex beneficial to the growth of alumen ustum flco, makes incorgruous flocculation effect Fruit is strengthened;Further, since reaction tank top have accumulated larger flco, bottom is not existed by the fine particle of cohesion absorption Just it is easy to be adsorbed when rising with current, enhances the effect of contact cohesion, under both collective effects, suspension exists in water It is interior in short-term to form the alumen ustum for easily sinking.Vortex flocculation has the characteristics of hydraulic detention time is short, and reaction volume is little, is other shapes The 1/3 ~ 1/2 of formula reactor.
The shallow-layer flat flow precipitation unit includes water distribution section, precipitating phase and water exit end;The water distribution section arranges water inlet, described Water exit end arranges delivery port;Arrange to flood in water exit end and vacate mill weir, spoil disposal and drainpipe are set in bottom.Coprecipitation mode is adopted With shallow-layer flat flow precipitated separation technology, true shallow-layer theory is breathed out in the technology application, and by sediment tube horizontal positioned, horizontal line flows, Suspension vertical separation, with precipitation and separation function under optimum state.Shallow-layer flat flow multilayer is arranged, and from you precipitation is increased Area, reduces the settling height of suspension, shortens the suspension sedimentation time;The vertical cross section shape of shallow-layer advection pipe unit For rhombus, ttom of pipe is laterally provided with spoil disposal slit, sinks mud along cunning under side, then slips into following advection pipe precipitation by spoil disposal slit Unit, suspension is separated from water in time by advection pipe, and water walks water channel, mud and walks muddy road, improves the row of suspension reversible precipitation Mud condition, and avoid suspended particle clogging pipeline and run the generation of alum phenomenon.Deposition efficiency is the arrangement increases, filter tank is alleviated Load, can rinse the body refuse of tube wall deposited on top under the conditions of not cutting off the water.
Further, the floating filter element includes the filter chamber that base plate, side wall and top board are surrounded;In the filter chamber Interior setting foamed plastic filter pearl, filter plate, water outlet flat mouth weir;In the side wall upper part, delivery port, the delivery port and water outlet are set Flat mouth weir is connected;In filter chamber bottom, water inlet, air inlet piping and backwash Sewer System are set;Drain is set on base plate. Filter and adopt lightweight floating filter material upward flow filtration technology, polyphenyl alkene lightweight floating filter material(EPS foamed plastics filter pearl)It is a kind of Fruitful filtrate, its physical and chemical performance is stable, meet the relevant sanitary index of national regulation, draw materials be easier to, price it is low It is honest and clean, with lightweight, specific surface area is big, high adsorption capacity, do not crush, porosity is high, filtering velocity is fast, decontamination ability is strong, filtrate grain Degree is uniform, long service life the advantages of.Polyphenyl alkene filtering layer has good deep layer retaining power, and sand filter can be overcome common Surface clogging, is conducive to extending filter cycle, improves filter efficiency;When the waste water containing tiny flocculation body passes through filter bed, Have the advantage of suspending clarification and both light filter material upward flow filtrations concurrently, suspended impurity and the previous micro- wadding for retaining in hole in water Solidifying body comes in contact flocculation, and floating media filter has separation of solid and liquid and flocculation double effects, and the loss of flood peak is much smaller than quartz Sand filter blanket, under identical condition of water quality, the loss of flood peak growth rate of floating filter material filtering layer is about 0.2-0.5KPa/h, than identical Quartz sand filter under filtering velocity is low by more than 40%.
Further, the water inlet, air inlet piping include water inlet;The backwash Sewer System include backwash air inlet and Backwash discharge outlet.
The present invention a kind of tunnel waste water automated processing system, with compact conformation, modularization, take up an area less, reduced investment, peace Fill the features such as quick, easy to use, maintenance is simple, repeat transition uses.A kind of tunnel waste water of the present invention automatically processes and is System high degree of automation, once debugging end carry after operation can prosthetic operation, between each unit after device context is in place Connected by pipeline valve, only body equipment carries out flange and be rigidly connected with sewage source end and exhaust outlet end.It is applied to The application scenarios such as the waste discharge process during constructing tunnel, during opening a mine, during culvert construction.
Description of the drawings
Fig. 1 is tunnel waste water automated processing system overall structure figure;
Fig. 2 is vortexed flocculation reaction cellular construction front view;
Fig. 3 is the single front view of shallow-layer flat flow precipitation;
Fig. 4 is vortex flocculation reaction unit I-I faces sectional view;
Fig. 5 is floating filter element front view;
Fig. 6 is floating filter element K to sectional view;
Fig. 7 is floating filter element II-II faces sectional view;
Fig. 8 is the fundamental diagram of tunnel waste water automated processing system.
Specific embodiment
With reference to accompanying drawing, a kind of tunnel waste water automated processing system of the present invention is described in detail.
As shown in figure 1, a kind of tunnel waste water automated processing system, including wastewater equalization pond 1, arrange on wastewater equalization pond 1 Waste water inlet 2, has elevator pump 3 to go deep into wastewater equalization pond 1;Elevator pump 3 is connected to vortex flocculation reaction unit 5 by blender 4; The top of vortex flocculation reaction unit 5 is connected to shallow-layer flat flow precipitation unit 7;Shallow-layer flat flow precipitation unit 7 is through floating Filter element 6 is connected to supervision pond 8;The supervision side of pond 8 is provided with floss hole 9, and bottom surface is connected to spoil disposal drainage collection pond 10;Whirlpool The bottom of 7 yuan of stream flocculation reaction unit 5, shallow-layer flat flow precipitation list and floating filter element 6 is connected to spoil disposal draining receipts Ji Chi.
Upper tunnel waste water automated processing system also includes flocculating agent throwing device and flocculating agent feeding device, and flocculating agent is added Device is used to add flocculating agent to blender, and flocculating agent feeding device is used to add flocculant to blender.
As shown in Fig. 2 vortex flocculation reaction unit 5 includes base plate 51, steel pipe supporting leg 52, taper cone barrel 53, leg formula support seat cover Plate 54, cylindrical drum 55, effluent weir 56, bead top angle 57, lamina tecti 58, top cover manhole 59, fence 510, safe helper 511st, upper padding plate 512, lower bolster 513, the taper cone barrel 53 of supporting leg pull bar 514. are located at bottom, cylindrical drum 53, effluent weir 56, lamina tecti 58 install upwards successively;Effluent weir 56 arranges delivery port C;Water inlet A and blowdown drain B are set on taper cone barrel.
Shallow-layer flat flow precipitation unit 7 includes going along with sb. to guard him helper 71, bearing support 72, normal pressure manhole 73, water distribution section 74, precipitating phase 75th, water exit end 76, flood and vacate mill weir 77, precipitation plate body 78, precipitation plate body supporting 79, spoil disposal and drainpipe 710.Water distribution section 74 Water inlet A is set, and water exit end 76 arranges water outlet B;Arrange to flood in water exit end 76 and vacate mill weir 77, spoil disposal is set in bottom And drainpipe 710.
Floating filter element 6 includes base 61, the filter chamber that base plate 62, side wall and 610 plates of top are surrounded, bottom top angle 63rd, lower locular wall plate reinforcement 64, foamed plastic filter pearl 65, drain cap 66, filter plate 67, filter plate reinforcement 68, along side top angle 69th, top board well word reinforcement 611, normal pressure top manhole 612, water outlet flat mouth weir 613, outlet pipe 614, upper locular wall plate reinforcement 615, Side manhole 616, water inlet, air inlet piping 617, pipe close 618, backwash Sewer System 619, pipe end hold-down support 620, filter chamber demarcation strip 621.Filtering indoor setting foamed plastic filter pearl 65, filter plate 67, water outlet flat mouth weir 613;In side wall upper part, water outlet B is set, Water outlet B is connected with water outlet flat mouth weir 613;In filter chamber bottom, water inlet, air inlet piping 617 and backwash Sewer System are set 619;Drain E is set on base plate 62.Water inlet, air inlet piping 617 include first and second water inlet A 1, A2;Backwash Sewer System 619 include first and second backwash air inlet C1, C2 and first and second backwash discharge outlet D1, D2.
As shown in figure 8, the course of work of the tunnel waste water automated processing system of the present invention is as follows:
Constructing tunnel is drained into wastewater equalization pond, then enters blender by elevator pump(Tube mixer), by cohesion Agent throwing device to blender adds flocculating agent, and flocculating agent feeding device to blender adds flocculant;Tube mixer process Afterwards flow direction vortex flocculation reaction unit, then again through shallow-layer flat flow precipitation unit, floating filter element stream enter to supervise pond;Jing Detection, the hydration lattice after process are then discharged from supervision pond, unqualified, flow back to wastewater equalization pond.Vortex flocculation reaction unit, Shallow-layer flat flow precipitation unit, the waste residue of floating filter element enter spoil disposal drainage collection pond, to sinking in spoil disposal drainage collection pond The body refuse at bottom washes in a pan clearly landfill.The supernatant of spoil disposal drainage collection pond precipitation flows back to wastewater equalization pond.
The tunnel waste water automated processing system of the present invention has advantages below:
1st, sewage treating efficiency is improve, satisfaction carries the emission request after mark so that environmental pollution is administered;
2nd, the processing and fabricating of all units is completed in factory, to scene rear assembling in place, you can input commissioning test.Whole system Make process control high, Mass accuracy is ensured that production efficiency is improved, so as to reduce on-site construction processes, reduce Material consumption, directly reduces equipment cost;
3rd, due to its high degree of automation, thus it is easy to operate, it is only necessary to press operation button;
4th, the high efficiency of tunnel waste water automated processing system of the invention, greatly reduces job site floor space, improves Treatment effect.
Based on description of the preferred embodiment of the present invention, it should be apparent that the sheet being defined by the appended claims Invention is not limited only to the specific detail that illustrated in specification above, without departing from present inventive concept or scope to this Bright many obviously change equally possible reaches the purpose of the present invention.

Claims (7)

1. a kind of tunnel waste water automated processing system, it is characterised in that including wastewater equalization pond, is arranged on the wastewater equalization pond Waste water inlet, has elevator pump to go deep into the wastewater equalization pond;The elevator pump is connected to vortex flocculation reaction list by blender Unit;The top of the vortex flocculation reaction unit is connected to shallow-layer flat flow precipitation unit;The shallow-layer flat flow precipitation unit Supervision pond is connected to through floating filter element;Supervision pond side is provided with floss hole, and bottom surface is connected to spoil disposal draining receipts Ji Chi;The bottom of the vortex flocculation reaction unit, shallow-layer flat flow precipitation unit and floating filter element is connected to row Discharging collecting pit.
2. waste water automated processing system in tunnel according to claim 1, it is characterised in that also add dress including flocculating agent Put, the flocculating agent throwing device is used to add flocculating agent to the blender.
3. waste water automated processing system in tunnel according to claim 1, it is characterised in that also fill including flocculant concentration Put, the flocculating agent feeding device is used to add flocculant to blender.
4. waste water automated processing system in tunnel according to claim 1, it is characterised in that the vortex flocculation reaction unit Including taper cone barrel, cylindrical drum, effluent weir, lamina tecti, the taper cone barrel is located at bottom, the cylindrical drum, effluent weir, lamina tecti according to It is secondary to install upwards;The effluent weir arranges delivery port;Water inlet and blowdown drain are set on the taper cone barrel.
5. waste water automated processing system in tunnel according to claim 1, it is characterised in that the shallow-layer flat flow precipitation is single Unit includes water distribution section, precipitating phase and water exit end;The water distribution section arranges water inlet, and the water exit end arranges delivery port;In water outlet Arrange to flood in section and vacate mill weir, spoil disposal and drainpipe are set in bottom.
6. waste water automated processing system in tunnel according to claim 1, it is characterised in that the floating filter element includes The filter chamber that base plate, side wall and top board are surrounded;Indoor setting foamed plastic filter pearl, filter plate, water outlet flat mouth weir are filtered described; The side wall upper part arranges delivery port, and the delivery port is connected with water outlet flat mouth weir;In filter chamber bottom, water inlet, air inlet are set Piping and backwash Sewer System;Drain is set on base plate.
7. waste water automated processing system in tunnel according to claim 6, it is characterised in that the water inlet, air inlet piping bag Include water inlet;The backwash Sewer System includes backwash air inlet and backwash discharge outlet.
CN201610783981.0A 2016-08-31 2016-08-31 Automatic tunnel wastewater treatment system Pending CN106630249A (en)

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Application Number Priority Date Filing Date Title
CN201610783981.0A CN106630249A (en) 2016-08-31 2016-08-31 Automatic tunnel wastewater treatment system

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Application Number Priority Date Filing Date Title
CN201610783981.0A CN106630249A (en) 2016-08-31 2016-08-31 Automatic tunnel wastewater treatment system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108275801A (en) * 2018-02-05 2018-07-13 李科 A kind of constructing tunnel waste water treatment technique
CN113248000A (en) * 2021-06-29 2021-08-13 中国铁路设计集团有限公司 Combined assembly type tunnel wastewater treatment device and wastewater treatment system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202173844U (en) * 2011-08-01 2012-03-28 北京中环嘉诚环境工程有限公司 Reaction, sedimentation and filtration integrated device
CN104276638A (en) * 2014-10-15 2015-01-14 无锡天康环保设备有限公司 Tunnel construction drainage treatment method and treatment device thereof
CN105836932A (en) * 2016-06-12 2016-08-10 贵州晨辉达矿业工程设计有限公司 Method for treating wastewater containing sediment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202173844U (en) * 2011-08-01 2012-03-28 北京中环嘉诚环境工程有限公司 Reaction, sedimentation and filtration integrated device
CN104276638A (en) * 2014-10-15 2015-01-14 无锡天康环保设备有限公司 Tunnel construction drainage treatment method and treatment device thereof
CN105836932A (en) * 2016-06-12 2016-08-10 贵州晨辉达矿业工程设计有限公司 Method for treating wastewater containing sediment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108275801A (en) * 2018-02-05 2018-07-13 李科 A kind of constructing tunnel waste water treatment technique
CN113248000A (en) * 2021-06-29 2021-08-13 中国铁路设计集团有限公司 Combined assembly type tunnel wastewater treatment device and wastewater treatment system

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