CN104445677B - A kind of underground movable modularization mine water treatment system - Google Patents
A kind of underground movable modularization mine water treatment system Download PDFInfo
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- CN104445677B CN104445677B CN201410612892.0A CN201410612892A CN104445677B CN 104445677 B CN104445677 B CN 104445677B CN 201410612892 A CN201410612892 A CN 201410612892A CN 104445677 B CN104445677 B CN 104445677B
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
The invention provides a kind of method of down-hole treatment mine water, carry out precipitation process including first mine water is incorporated in shaft sump；Separation of solid and liquid process is carried out to the mine water after described precipitation, removes fine suspension therein；Slightly purify water to first and carry out water-oil separating process, remove dissolved oil therein and oil emulsion, obtain second and slightly purify water；Slightly purify water to second and carry out hyperfiltration treatment, remove organic matter therein, obtain water purification.Another aspect of the present invention provides the device of a kind of down-hole treatment mine water, including shaft sump, equipment for separating liquid from solid, oily-water seperating equipment, ultrafiltration apparatus and control device.The inventive method is obvious to the every organic matter removal effect in waste water of mine, processed by the invention after the every pollutant levels of waste water of mine be all decreased obviously, clearance is higher.Apparatus of the present invention and being directly arranged under coal mine, mine water is directly used in down-hole reuse after treatment, dramatically saves on investment and the operating cost that waste water is processed.
Description
Technical field
The present invention relates to the process in down-hole for the waste-water from coal mine and reuse, particularly relate to the method and apparatus of a kind of down-hole treatment mine water.
Background technology
Underground coal mine mine water waste water is mainly disclosed by tunnel caused by involving underground water source with gob collapse, and its source is mainly Atmospheric precipitation, surface water, tomography water, aquifer water, goaf water etc..Underground coal mine mine water is owing to washing away coal seam, being affected by underground work personnel's sanitary sewage.Therefore, both having had the feature of sanitary sewage, and having had again the pollution sources of coal industry wastewater characteristics, and mainly had following characteristic: in waste water, suspension content is high, turbidity is high；Suspension particle is little, density is little, settling property is poor；Coagulation effect difference, is difficult in coagulation process form alumen ustum, it is generally required to dosing coagulant and flocculation aid improve the settling property of waste water；Containing higher oil emulsion, dissolve oily substance.
Coal mine water treatment technological process is generally: mine water-regulating reservoir-elevator pump-coagulating sedimentation reaction settling basin-filtration-sterilization-qualified discharge.If desired mine water is made to reach reuse or drinking water purposes, in addition it is also necessary to remove organic pollution, desalination even depth process further to mine water.Advanced treatment process conventional at present includes the technology such as ultrafiltration, nanofiltration and counter-infiltration.
Being the preprocessing part of mine water currently for the subject matter that Technique of Coal Mine Drainage is processed, mainly regulating reservoir does not play good regulation effect, and volume is typically less than normal, and anti impulsion load ability is poor.Typically, mine water typically can be provided with coagulating sedimentation reaction member.Coagulant typically uses aluminium polychloride (PAC), flocculation aid typically to use polyacrylamide (PAM).Owing to the concentration of suspension in mine water is higher, the dosage of the medicaments such as PAC and PAM is bigger, if handling process contains ultrafiltration, counter-infiltration even depth processing system, the membranous system such as ultrafiltration will be caused serious blocking by above-mentioned medicament, the flux making the membranous system such as ultrafiltration is greatly reduced, and has a strong impact on operational effect and the treatment effeciency of advanced treatment system.In addition, Technique of Coal Mine Drainage typically contains higher oil emulsion, dissolves oily substance.Common coal mine water treatment system does not include oil removing system.This makes to flow to follow-up film processing system through pretreated mine water, also can cause serious fouling membrane to membranous system, have a strong impact on flow velocity rate.More distinct issues are, the conventional method with utilization that processes of Technique of Coal Mine Drainage is often to be promoted to Underground well water after ground processes, part utilizes on ground or arranges outward, part again returns to down-hole and utilizes, the subject matter existing is except lifting costly, need bigger floor space, there is also difficulty of construction and quantities is big, respective line lays the shortcomings such as expense is high.
Content of the invention
The oil-containing, the oil-containing suspension that the present invention be directed to existing Technique of Coal Mine Drainage are high, present in Mine Water Transacting Technology, dosage is high, without problems such as oil removing measure, processing cost are high, provide the method and apparatus of a kind of down-hole treatment mine water, the treating method and apparatus of the application present invention processes mine water, simple and convenient, without chemical agent, the mine water after process can be directly used for down-hole reuse, dramatically saves on investment and the operating cost that waste water is processed.
One aspect of the present invention provides a kind of method of down-hole treatment mine water, comprising:
Mine water is incorporated in the shaft sump being transformed into by Abandoned Tunnel in mine and carries out precipitation process, remove the bulky grain solid matter in mine water, obtain thick water；
By carrying out separation of solid and liquid process to described thick water, remove the fine suspension in mine water, obtain first and slightly purify water；
Carry out water-oil separating process by slightly purifying water to described first, remove the first dissolved oil slightly purifying in water and oil emulsion, obtain second and slightly purify water；
Carry out hyperfiltration treatment by slightly purifying water to described second, remove the second organic matter slightly purifying in water, obtain water purification；
Wherein, described separation of solid and liquid is processed is to carry out rotating filter process to mine water.
Wherein, described precipitation process is to be incorporated into mine water in the shaft sump being transformed into by Abandoned Tunnel in mine to carry out precipitation process, removes the bulky grain solid matter in mine water, obtains thick water.
In precipitation process, pending mine water is through preformed precipitate after a while, and the SS particulate matter in thick water is precipitated to get off, and dramatically reduces the process load of subsequent processing units.
Particularly, the hydraulic detention time of described precipitation process is 5-30h, preferably 10h.
Wherein, rotating filter processes and includes:
When thick water after precipitation process flows from the top down, the fine suspension in mine water is retained and collects the thick purification water eliminating described fine suspension by rotary filter below；
Described rotary filter is by rotating separated for the described fine suspension that retains.
Wherein, described rotary filter includes:
For collecting the thick drum-type water collector purifying water eliminating fine suspension；
Connect the rotating driving device of described drum-type water collector；
Wherein, on the barrel of drum-type water collector, dense distribution can retain multiple ducts of described fine suspension, and the outlet size in each of which duct is less than its entrance opening dimension.
Particularly, described duct is preferably cone duct.
Especially, the aperture of its entrance of described duct is 2-5mm, and the aperture of its outlet is 0.5-1mm.
Particularly, the aperture of described duct entrance is preferably 3mm, and the aperture of outlet is preferably 1mm.
When the mine water of precipitation process flows from the top down, flow through rotary filter below, in mine water, diameter is directly retained by the duct on barrel more than the SS of 3mm, the suspension of diameter ＜ 3mm enters in duct, and because the port of export diameter in duct is less, the suspension of diameter >=1mm is also left in duct, will not enter in next step process, compared with common equal diameter filter opening, pyramid type duct can make SS (suspended particulate) assemble to greatest extent in duct；Revolving filter is through rotating afterwards, and by the effect of centrifugal force and gravity by separated for the fine suspension of part retaining in duct, and obtain after filtering first slightly purifies water and collect via drum-type water collector, enters next and processes step.
Wherein, the method for described down-hole treatment mine water also includes, carries out backwash process to described revolving filter, backwashes, by water under high pressure, the fine suspended substance removal that will remain in revolving filter.
Particularly, when filtration flux reduces about 25-35%, backwash is opened.
Wherein, described water-oil separating is processed is slightly to purify water by nanometer pottery ware film to described first to carry out filtration treatment, removes dissolved oil therein and oil emulsion, obtains second and slightly purify water.
Particularly, described nano ceramics film is by high-purity a-Al2O3Material vacuum-sintering under 800-1200 DEG C of high temperature forms, and aperture is 10nm-2.0 μm.
Especially, the average transmembrane pressure of described nano ceramics film is 1-5bar, and pore size filter is 0.05 μm, and average flux is 100-150L/m2/h。
During underground coal mine digging operation, digger hydraulic support needs to use the coolant of amplification quantity side by side.These coolants are ultimately discharged in mine water, containing a large amount of dissolved oil and oil emulsion.Dissolved oil is dissolved completely in water, oil emulsion in water in emulsion.The physics of routine, chemically and physically chemical method are all difficult to remove above-mentioned dissolved oil and oil emulsion.Ceramic membrane has numerous advantages such as separative efficiency height, effect stability, chemical stability be good, acid and alkali-resistance, organic solvent-resistant, resistance to bacterium, high temperature resistant, antipollution, film regenerability are good, separation process simple, film length in service life；The generation of nano ceramics, the brittleness problems of ceramic material can be improved, pottery is made to have as metal is like pliability and machinability, nano-alumina powder particle diameter is little, surface atom ratio is high, has bulk effect, the skin effect of uniqueness, is exploitation a new generation high intensity, high tenacity, the desirable feedstock of multifunctional ceramic.Therefore, the present invention uses nano ceramics film to process dissolved oil and oil emulsion.
Wherein, the method for described down-hole treatment mine water also includes, carries out backwash process to described nano ceramics film, is removed the dissolved oil on nano ceramics film and oil emulsion by water under high pressure backwash.
Particularly, when membrane flux reduces about 25-35%, backwash is opened.
Wherein, described hyperfiltration treatment is slightly to purify water by tubular membrane component to described second to carry out hyperfiltration treatment, removes organic matter therein, obtains water purification.
Particularly, the material of described tubular membrane is macromolecular material.
Especially, described tubular membrane is preferably flat board tubular membrane, and the material of described tubular membrane is preferably Kynoar.
Particularly, the molecular cut off of described tubular membrane is 1.5 × 105μ, operating pressure is 0.1-0.16MPa.
After processing through hyperfiltration advanced processing system, in mine water, the clearance of DOC is between 40-60%, UV254Clearance at 30-50%, show that the overwhelming majority of the small-molecular-weight organic matter less than 1000 μ in mine water is removed.
Wherein, the method for described down-hole treatment mine water also includes, carries out backwash process to described tubular membrane component, is backwashed the organic matter removal on tubular membrane component by water under high pressure.
Particularly, when membrane flux reduces about 35-45%, backwash is opened.
Another aspect of the present invention provides the device of a kind of down-hole treatment mine water, comprising:
Shaft sump, is formed by the Abandoned Tunnel transformation in mine, for carrying out precipitation process to mine water, removes the bulky grain solid matter in mine water, obtain thick water；
Equipment for separating liquid from solid, for carrying out separation of solid and liquid process to described thick water, removes the fine suspension in mine water, obtains first and slightly purifies water；
Oily-water seperating equipment, carries out water-oil separating process for slightly purifying water to first, removes dissolved oil therein and oil emulsion, obtains second and slightly purifies water；
Ultrafiltration apparatus, carries out hyperfiltration treatment for slightly purifying water to second, removes the second organic matter slightly purifying in water, obtains water purification；
Wherein, described equipment for separating liquid from solid is revolving filter.
Wherein, described shaft sump pretreatment system is to be formed by the transformation of down-hole Abandoned Tunnel, is used for storing described mine water, and carries out precipitation process to described mine water, obtains thick water.
Underground coal mine has a lot of discarded tunnel, and quantity is many, and volume is big.Therefore, the present invention utilizes down-hole Abandoned Tunnel, and slight modification is the shaft sump of water storage.
In shaft sump, pending mine water is through precipitation after a while, and the SS particulate matter in water is precipitated to get off, and dramatically reduces the process load of subsequent processing units.
Wherein, described revolving filter includes:
For collecting the thick drum-type water collector purifying water eliminating fine suspension；
Connect the rotating driving device of described drum-type water collector；
Wherein, on the barrel of drum-type water collector, dense distribution can retain multiple ducts of described fine suspension, and the outlet size in each of which duct is less than its entrance opening dimension.
Particularly, described rotating driving device is positioned at the center of described drum-type water collector, and its one end is connected with motor, is driven described rotating driving device and then drive drum-type water collector to rotate by motor.
Especially, one end of described drum-type water collector is closed, and its center links with described rotating driving device, and the other end opens wide, for making the described thick purification water of collection flow out described water collector.
Particularly, described duct is preferably cone duct.
Especially, the aperture of its entrance of described duct is 2-5mm, and the aperture of its outlet is 0.5-1mm.
Particularly, the aperture of described duct entrance is preferably 3mm, and the aperture of outlet is preferably 1mm.
When the mine water of precipitation process flows from the top down, flow through rotary filter below, in mine water, diameter is directly retained by the duct on barrel more than the SS of 3mm, the suspension of diameter ＜ 3mm enters in duct, and because the port of export diameter in duct is less, the suspension of diameter >=1mm is also left in duct, will not enter in next step process, compared with common equal diameter filter opening, pyramid type duct can make SS (suspended particulate) assemble to greatest extent in duct；Revolving filter is through rotating afterwards, and by the effect of centrifugal force and gravity by separated for the fine suspension of part retaining in duct, and obtain after filtering first slightly purifies water and collect via drum-type water collector, enters next processing means.
Wherein, the device of described down-hole treatment mine water also includes separation of solid and liquid back washing device.
Particularly, described filtration back washing device includes backwash water water tank, backwashing pump and nozzle.
Especially, the import of described backwashing pump is connected with described backwash water water tank by pipeline, and described backwash delivery side of pump is connected with described nozzle by pipeline.Described filter backwash device is positioned at the top of described filter, and the backwash water in backwash water water tank is sprayed by nozzle via backwashing pump, backwashes filter.
Particularly, when the membrane flux of filtration system reduces about 30%, open back washing device and filter is backwashed.
Wherein, described oily-water seperating equipment is nano ceramics membrane module
Particularly, described nano ceramics film is by high-purity a-Al2O3Material vacuum-sintering under 800-1200 DEG C of high temperature forms, and aperture is 10nm-2.0 μm.
Especially, the average transmembrane pressure of described nano ceramics film is 1-5bar, and pore size filter is 0.05 μm, and average flux is 100-150L/m2/h。
During underground coal mine digging operation, digger hydraulic support needs to use the coolant of amplification quantity side by side.These coolants are ultimately discharged in mine water, containing a large amount of dissolved oil and oil emulsion.Dissolved oil is dissolved completely in water, oil emulsion in water in emulsion.The physics of routine, chemically and physically chemical method are all difficult to remove above-mentioned dissolved oil and oil emulsion.Ceramic membrane has numerous advantages such as separative efficiency height, effect stability, chemical stability be good, acid and alkali-resistance, organic solvent-resistant, resistance to bacterium, high temperature resistant, antipollution, film regenerability are good, separation process simple, film length in service life；The generation of nano ceramics, the brittleness problems of ceramic material can be improved, pottery is made to have as metal is like pliability and machinability, nano-alumina powder particle diameter is little, surface atom ratio is high, has bulk effect, the skin effect of uniqueness, is exploitation a new generation high intensity, high tenacity, the desirable feedstock of multifunctional ceramic.Therefore, the present invention uses and processes dissolved oil and oil emulsion with the nano ceramics film oil removing system that nano ceramics pipe is main filter element.
Wherein, the device of described down-hole treatment mine water also includes water-oil separating back washing device.
Particularly, described water-oil separating back washing device includes backwash water water tank, backwashing pump and nozzle.
Especially, the import of described backwashing pump is connected with described backwash water water tank by pipeline, and described backwash delivery side of pump is connected with described nozzle by pipeline.Described back washing device is positioned at the top of described oily-water seperating equipment, and the backwash water in backwash water water tank is sprayed by nozzle via backwashing pump, backwashes oily-water seperating equipment, removes the oily sludge thing being enriched in ceramic membrane surface through backwash.
Particularly, when the membrane flux of oil removing system reduces about 30%, open back washing device and oily-water seperating equipment is backwashed.
Wherein, described ultrafiltration apparatus is tubular membrane component.
Particularly, the material of described tubular membrane is macromolecular material.
Especially, the membrane module of described ultrafiltration apparatus is preferably flat board tubular membrane, and the material of described tubular membrane is preferably Kynoar.
Particularly, the molecular cut off of described tubular membrane is 1.5 × 105μ, operating pressure is 0.1-0.16MPa.
After processing through ultrafiltration apparatus, in mine water, the clearance of DOC is between 40-60%, UV254Clearance at 30-50%, show that the overwhelming majority of the small-molecular-weight organic matter less than 1000 μ in mine water is removed.
Wherein, the device of described down-hole treatment mine water also includes hyperfiltration reverse-rinsing device.
Particularly, described hyperfiltration reverse-rinsing device includes backwash water water tank, backwashing pump and nozzle.
Especially, the import of described backwashing pump is connected with described backwash water water tank by pipeline, and described backwash delivery side of pump is connected with described nozzle by pipeline.Described filtration back washing device is positioned at the top of described filter, and the backwash water in backwash water water tank is sprayed by nozzle via backwashing pump again, backwashes ultrafiltration apparatus.
Particularly, when the membrane flux of ultrafiltration system reduces about 30%, open back washing device and ultrafiltration apparatus is backwashed.
Wherein, the device of described down-hole treatment mine water also includes controlling device.
Particularly, described control device is explosion-proof PLC control device.
Especially, described control device is connected with above-mentioned each device, automatically controls whole equipment safety and runs normally.
Particularly, the electrical equipment of described control device is provided with dust-proof, damp proof and explosion-protection equipment, it is ensured that device can be used safely in underground coal mine.
Advantages of the present invention and Advantageous Effects are as follows:
1st, first the method and apparatus of down-hole treatment mine water of the present invention carries out precipitation process by shaft sump to pending mine water, precipitates the SS particulate matter in water, dramatically reduces the process load of subsequent treatment.
2nd, the method and apparatus of down-hole treatment mine water of the present invention uses rotating filter to carry out separation of solid and liquid process to mine water, it is possible not only to retain the fine suspension in mine water to greatest extent, and at revolving filter during rotating, the fine suspended substance removal that will be retained by centrifugal force and gravity, increase the filtration flux of filter while filtering, extend backwash cycle and the service life of filter.
3rd, the method and apparatus of down-hole treatment mine water of the present invention uses nano ceramics film to remove the oil emulsion in mine water and dissolved oil, the physics of routine, chemically and physically chemical method are all difficult to remove above-mentioned dissolved oil and oil emulsion, ceramic membrane separation efficiency is high, effect stability, can well remove it, it is to avoid the fouling membrane of subsequent treatment and film blockage problem.
4th, the method for down-hole treatment mine water of the present invention is obvious to the every organic matter removal effect in waste water of mine, the every pollutant levels of waste water of mine after process are all decreased obviously, suspension (SS) clearance is up to 89-92.2%, turbidity removal rate is up to 94.3-96.6%, oils clearance is up to 94.8-95.8%, DOC clearance is up to 93.5-94.9%, UV254Clearance is up to 92.3-94.7%, and clearance is higher.
5th, the method and apparatus of down-hole treatment mine water of the present invention is in whole processing procedure, without chemical agents such as PAC and PAM, during processing, does not increase the pollution in water and does not increase processing pressure.
6th, first the device of down-hole treatment mine water of the present invention is an organic whole, for present invention firstly provides.But each device is all independent, can realize free dismounting, conveniently moving, greatly facilitates down-hole and use.
7th, the device of down-hole treatment mine water of the present invention uses under down-hole environment, and electric components used all uses flame proof safety-type, it is ensured that the safe handling under the conditions of underground work.
8th, the device of down-hole treatment mine water of the present invention is directly arranged under coal mine, and mine water is directly used in down-hole reuse after treatment, dramatically saves on investment and the operating cost that waste water is processed.
Brief description
Fig. 1 is the method flow diagram of down-hole treatment mine water of the present invention；
Fig. 2 is the device schematic diagram of down-hole treatment mine water of the present invention；
Fig. 3 is the front view of the revolving filter of the device of down-hole treatment mine water of the present invention；
Fig. 4 is the left view of the revolving filter of the device of down-hole treatment mine water of the present invention；
Fig. 5 is the side sectional view of the revolving filter of the device of down-hole treatment mine water of the present invention；
Fig. 6 is the partial enlarged drawing of A in Fig. 5；
Description of reference numerals: the 1st, shaft sump；2nd, equipment for separating liquid from solid；3rd, oily-water seperating equipment；4th, ultrafiltration apparatus；5th, device is controlled；21st, drum-type water collector；22nd, back washing device is filtered；23rd, barrel；24th, rotating driving device；25th, duct；26th, water tank；27th, backwashing pump；28th, nozzle the 31st, water-oil separating back washing device；32nd, water tank；33rd, backwashing pump；41st, hyperfiltration reverse-rinsing device；42nd, water tank；43rd, backwashing pump.
Detailed description of the invention
Method below in conjunction with the down-hole treatment mine water to the present invention for the specific embodiment is described further:
Embodiment 1
Experimental water is taken from Shenhua of a China god east cun mine and is gone down into a mine water pilot scale plant, and processing the water yield is 12t/d.Each pollutant levels of water inlet are: suspension (SS) value 70mg/L, turbidity value 5.65NTU, oils value 15.3mg/L, DOC value 6.72mg/L, UV254Value 0.09cm-1。
First, pending waste water introducing shaft sump being carried out precipitation process, removing bulky grain solid matter therein, obtain thick water, wherein the hydraulic detention time of precipitation process is 10h.
Carrying out rotating filter process to the thick water after precipitation process, the mine water through precipitation process is flowing into revolving filter from the top down, and fine suspension therein is trapped, and obtains first and slightly purifies water.When the filtration flux of revolving filter reduces 25%, open nozzle-type water under high pressure backwashing system and backwash is carried out to revolving filter.
Slightly purify water to first and carry out water-oil separating process, slightly purify water by first and pass through nano ceramics membrane module, remove dissolved oil therein and oil emulsion, obtain second and slightly purify water.Wherein, the average transmembrane pressure of nano ceramics film is 4bar, and pore size filter a size of 0.05 μm, average flux is 140L/m2/h.When the membrane flux of nano ceramics film reduces 25%, open nozzle-type water under high pressure backwashing system and backwash is carried out to nano ceramics membrane module.
Slightly purify water to second and carry out hyperfiltration treatment, slightly purify water by second and pass through flat board tubular membrane component, remove difficult dissolved organic matter therein, obtain water purification.Wherein, flat board tubular type membrane material is Kynoar (PVDF), and molecular cut off is 1.5 × 105μ.When milipore filter flux reduces by 45%, i.e. open hyperfiltration reverse-rinsing system and carry out backwash to waste water, remove the micro-Organic Pollutants of small-molecular-weight less than 1000 μ for the overwhelming majority, obtain water purification.Wherein, the operating pressure of milipore filter is 0.15MPa, and the backwash cycle is 125min, and the backwash time is 65s.
Finally, the every concentration value of water purification after treated purification is: suspension (SS) 7mg/L, turbidity 0.32NTU, oils 0.8mg/L, DOC0.35mg/L, UV2540.005cm-1；Clearance is respectively as follows: suspension (SS) 90%, turbidity 94.3%, oils 94.8%, DOC94.8%, UV25494.4%.Can be seen that from data, the every pollutant levels of waste water of mine after processing through the inventive method are all decreased obviously, clearance is higher, and the water purification after process can be back to the multiple uses such as underground hydraulic support frame coolant water, down-hole depositing dust water and down-hole fire demand water.
Embodiment 2
Experimental water is taken from Shenhua of a China god east cun mine and is gone down into a mine water pilot scale plant, and processing the water yield is 12t/d.Each pollutant levels value of water inlet is: suspension (SS) 100mg/L, turbidity 12.1NTU, oils 18.7mg/L, DOC7.63mg/L, UV2540.10cm-1。
First, pending waste water introducing shaft sump being carried out precipitation process, removing bulky grain solid matter therein, obtain thick water, wherein the hydraulic detention time of precipitation process is 15h.
Carrying out rotating filter process to the thick water after precipitation process, the mine water through precipitation process is flowing into revolving filter from the top down, and fine suspension therein is trapped, and obtains first and slightly purifies water.When the filtration flux of revolving filter reduces 35%, open nozzle-type water under high pressure backwashing system and backwash is carried out to revolving filter.
Slightly purify water to first and carry out water-oil separating process, slightly purify water by first and pass through nano ceramics membrane module, remove dissolved oil therein and oil emulsion, obtain second and slightly purify water.Wherein, the average transmembrane pressure of nano ceramics film is 1bar, and pore size filter a size of 0.05 μm, average flux is 100L/m2/h.When the membrane flux of nano ceramics film reduces 35%, open nozzle-type water under high pressure backwashing system and backwash is carried out to nano ceramics membrane module.
Slightly purify water to second and carry out hyperfiltration treatment, slightly purify water by second and pass through flat board tubular membrane component, remove difficult dissolved organic matter therein, obtain water purification.Wherein, flat board tubular type membrane material is Kynoar (PVDF), and molecular cut off is 1.5 × 105μ.When milipore filter flux reduces by 40%, i.e. open hyperfiltration reverse-rinsing system and carry out backwash to waste water, remove the micro-Organic Pollutants of small-molecular-weight less than 1000 μ for the overwhelming majority, obtain water purification.Wherein, the operating pressure of milipore filter is 0.10MPa, and the backwash cycle is 110min, and the backwash time is 50s.
Finally, the every concentration value of water purification after treated purification is: suspension (SS) 9mg/L, turbidity 0.42NTU, oils 0.85mg/L, DOC0.39mg/L, UV2540.007cm-1；Clearance is respectively as follows: suspension (SS) 91%, turbidity 96.5%, oils 95.5%, DOC94.9%, UV25493%.Can be seen that from data, the every pollutant levels of water purification after processing through the inventive method are all decreased obviously, clearance is higher, and the waste water of mine after process can be back to the multiple uses such as underground hydraulic support frame coolant water, down-hole depositing dust water and down-hole fire demand water.
Embodiment 3
Experimental water is taken from Shenhua of a China god east cun mine and is gone down into a mine water pilot scale plant, and processing the water yield is 12t/d.Each pollutant levels value of water inlet is: suspension (SS) 110.2mg/L, turbidity 10.5NTU, oils 20.3mg/L, DOC7.89mg/L, UV2540.11cm-1。
First, pending waste water introducing shaft sump being carried out precipitation process, removing bulky grain solid matter therein, obtain thick water, wherein the hydraulic detention time of precipitation process is 20h.
Carrying out rotating filter process to the mine water after precipitation process, the mine water through precipitation process is flowing into revolving filter from the top down, and fine suspension therein is trapped, and obtains first and slightly purifies water.When the filtration flux of revolving filter reduces 30%, open nozzle-type water under high pressure backwashing system and backwash is carried out to revolving filter.
Slightly purify water to first and carry out water-oil separating process, slightly purify water by first and pass through nano ceramics membrane module, remove dissolved oil therein and oil emulsion, obtain second and slightly purify water.Wherein, the average transmembrane pressure of nano ceramics film is 3bar, and pore size filter a size of 0.05 μm, average flux is 120L/m2/h.When the membrane flux of nano ceramics film reduces 30%, open nozzle-type water under high pressure backwashing system and backwash is carried out to nano ceramics membrane module.
Slightly purify water to second and carry out hyperfiltration treatment, slightly purify water by second and pass through flat board tubular membrane component, remove difficult dissolved organic matter therein, obtain water purification.Wherein, flat board tubular type membrane material is Kynoar (PVDF), and molecular cut off is 1.5 × 105μ.When milipore filter flux reduces by 40%, i.e. open hyperfiltration reverse-rinsing system and carry out backwash to waste water, remove the micro-Organic Pollutants of small-molecular-weight less than 1000 μ for the overwhelming majority, obtain water purification.Wherein, the operating pressure of milipore filter is 0.12MPa, and the backwash cycle is 120min, and the backwash time is 60s.
Finally, the every concentration value of mine water after treated purification is: suspension (SS) 9.3mg/L, turbidity 0.39NTU, oils 0.90mg/L, DOC0.42mg/L, UV2540.008cm-1；Clearance is respectively as follows: suspension (SS) 91.6%, turbidity 96.3%, oils 95.6%, DOC94.7%, UV25492.3%.Can be seen that from data, the every pollutant levels of waste water of mine after processing through the inventive method are all decreased obviously, clearance is higher, and the water purification after process can be back to the multiple uses such as underground hydraulic support frame coolant water, down-hole depositing dust water and down-hole fire demand water.
Embodiment 4
Experimental water is taken from Shenhua of a China god east cun mine and is gone down into a mine water pilot scale plant, and processing the water yield is 12t/d.Each pollutant levels value of water inlet is: suspension (SS) 46.5mg/L, turbidity 13.1NTU, oils 10.1mg/L, DOC5.86mg/L, UV2540.12cm-1。
First, pending waste water introducing shaft sump being carried out precipitation process, removing bulky grain solid matter therein, obtain thick water, wherein the hydraulic detention time of precipitation process is 30h.
Carrying out rotating filter process to the thick water after precipitation process, the mine water through precipitation process is flowing into revolving filter from the top down, and fine suspension therein is trapped, and obtains first and slightly purifies water.When the filtration flux of revolving filter reduces 32%, open nozzle-type water under high pressure backwashing system and backwash is carried out to revolving filter.
Slightly purify water to first and carry out water-oil separating process, slightly purify water by first and pass through nano ceramics membrane module, remove dissolved oil therein and oil emulsion, obtain second and slightly purify water.Wherein, the average transmembrane pressure of nano ceramics mold is 5bar, and pore size filter a size of 0.05 μm, average flux is 150L/m2/h.When the membrane flux of nano ceramics film reduces 32%, open nozzle-type water under high pressure backwashing system and backwash is carried out to nano ceramics membrane module.
Slightly purify water to second and carry out hyperfiltration treatment, slightly purify water by second and pass through flat board tubular membrane component, remove difficult dissolved organic matter therein, obtain water purification.Wherein, flat board tubular type membrane material is Kynoar (PVDF), and molecular cut off is 1.5 × 105μ.When milipore filter flux reduces by 43%, i.e. open hyperfiltration reverse-rinsing system and carry out backwash to waste water, remove the micro-Organic Pollutants of small-molecular-weight less than 1000 μ for the overwhelming majority, obtain water purification.Wherein, the operating pressure of milipore filter is 0.16MPa, and the backwash cycle is 130min, and the backwash time is 70s.
Finally, the every concentration value of mine water after treated purification is: suspension (SS) 5.1mg/L, turbidity 0.47NTU, oils 0.45mg/L, DOC0.30mg/L, UV2540.009cm-1；Clearance is respectively as follows: suspension (SS) 89%, turbidity 96.4%, oils 95.5%, DOC94.9%, UV25492.5%.Can be seen that from data, the every pollutant levels of waste water of mine after processing through the inventive method are all decreased obviously, clearance is higher, and the waste water of mine after process can be back to the multiple uses such as underground hydraulic support frame coolant water, down-hole depositing dust water and down-hole fire demand water.
Embodiment 5
Experimental water is taken from Shenhua of a China god east cun mine and is gone down into a mine water pilot scale plant, and processing the water yield is 12t/d.Each pollutant levels value of water inlet is: suspension (SS) 125.2mg/L, turbidity 8.9NTU, oils 22.8mg/L, DOC8.29mg/L, UV2540.15cm-1。
First, pending waste water introducing shaft sump is carried out precipitation process, remove bulky grain solid matter therein.Obtaining thick water, wherein the hydraulic detention time of precipitation process is 5h.
Carrying out rotating filter process to the mine water after precipitation process, the mine water through precipitation process is flowing into revolving filter from the top down, and fine suspension therein is trapped, and obtains first and slightly purifies water.When the filtration flux of revolving filter reduces 28%, open nozzle-type water under high pressure backwashing system and backwash is carried out to revolving filter.
Slightly purify water to first and carry out water-oil separating process, slightly purify water by first and pass through nano ceramics membrane module, remove dissolved oil therein and oil emulsion, obtain second and slightly purify water.Wherein, the average transmembrane pressure of nano ceramics film is 2bar, and pore size filter a size of 0.05 μm, average flux is 130L/m2/h.When the membrane flux of nano ceramics film reduces 28%, open nozzle-type water under high pressure backwashing system and backwash is carried out to nano ceramics membrane module.
Slightly purify water to second and carry out hyperfiltration treatment, slightly purify water by second and pass through flat board tubular membrane component, remove difficult dissolved organic matter therein, obtain water purification.Wherein, flat board tubular type membrane material is Kynoar (PVDF), and molecular cut off is 1.5 × 105μ.When milipore filter flux reduces by 38%, i.e. open hyperfiltration reverse-rinsing system and carry out backwash to waste water, remove the micro-Organic Pollutants of small-molecular-weight less than 1000 μ for the overwhelming majority, obtain water purification.Wherein, the operating pressure of milipore filter is 0.13MPa, and the backwash cycle is 115min, and the backwash time is 55s.
Finally, the every concentration value of mine water after treated purification is: suspension (SS) 9.8mg/L, turbidity 0.3NTU, oils 0.95mg/L, DOC0.54mg/L, UV2540.008cm-1；Clearance is respectively as follows: suspension (SS) 92.2%, turbidity 96.6%, oils 95.8%, DOC93.5%, UV25494.7%.Can be seen that from data, the every pollutant levels of waste water of mine after processing through the inventive method are all decreased obviously, clearance is higher, and the waste water of mine after process can be back to the multiple uses such as underground hydraulic support frame coolant water, down-hole depositing dust water and down-hole fire demand water.
It is described further with the device of the down-hole treatment mine water to the present invention for the embodiment below in conjunction with the accompanying drawings:
As in figure 2 it is shown, the device of down-hole treatment mine water of the present invention, including shaft sump 1, equipment for separating liquid from solid 2, oily-water seperating equipment 3, ultrafiltration apparatus 4 and control device 5.
Shaft sump 1 is formed by the transformation of down-hole Abandoned Tunnel, is used for storing described mine water, and carries out precipitation process to described mine water, removes the bulky grain solid matter in mine water, obtains thick water.
As shown in figures 3 to 6, equipment for separating liquid from solid 2 is revolving filter, comprising: for collecting the thick drum-type water collector 21 purifying water eliminating fine suspension and the rotating driving device 22 connecting described drum-type water collector；On the barrel 23 of drum-type water collector, dense distribution can retain multiple ducts 25 of described fine suspension, and the outlet size in each of which duct is less than its entrance opening dimension.
Duct 25 is preferably cone duct, and the aperture of duct entrance is 2-5mm, and the aperture of its outlet is 0.5-1mm.In the present invention, the aperture of the duct entrance of the device of down-hole treatment mine water is 3mm, and the aperture of outlet is 1mm.
Filtering back washing device 22 and being positioned at the top of filter, including backwash water water tank the 26th, backwashing pump 27 and nozzle 28, the import of backwashing pump 27 is connected with backwash water water tank 26 by pipeline, and the outlet of backwashing pump 27 is connected with nozzle 28 by pipeline.
Oily-water seperating equipment 3 is nano ceramics membrane module, and nano ceramics film is by high-purity a-Al2O3Material vacuum-sintering under 800-1200 DEG C of high temperature forms, and aperture is 10nm-2.0 μm.Nano ceramics film used in the embodiment of the present invention is by high-purity a-Al2O3Material vacuum-sintering under 1000 DEG C of high temperature forms, and aperture is 0.5 μm.
Assembly of the invention also includes water-oil separating back washing device 31, is positioned at the top of oily-water seperating equipment, including backwash water water tank 32 and backwashing pump 33, the import of backwashing pump 33 is connected with backwash water water tank 32 by pipeline.
The flat board tubular membrane that ultrafiltration apparatus 4 is Kynoar material.
Assembly of the invention also includes hyperfiltration reverse-rinsing device 41, is positioned at the top of ultrafiltration apparatus, including backwash water water tank 42 and backwashing pump 43, the import of backwashing pump 43 is connected with backwash water water tank 42 by pipeline.
Control device 5 controls device for explosion-proof PLC, and model is DXJXGL-02.Control device 5 is connected with above-mentioned each device, automatically controls whole equipment safety and runs normally.The electrical equipment of control device is provided with dust-proof, damp proof and explosion-protection equipment, and model is YBK2-90L-4-1.5KW, it is ensured that device can be used safely in underground coal mine.
The course of work of the present invention and operation principle are as follows:
First Underground well waste water carry out precipitation process through shaft sump, and shaft sump plays the homogeneous to water quality and quantity, regulation effect, simultaneously works as precipitation.After precipitation process, bulky grain solid matter in waste water of mine is precipitated goes out, and obtains thick water.
Afterwards, the thick water through precipitation process is promoted to equipment for separating liquid from solid through flame proof elevator pump and processes.In this device, waste water of mine flows through revolving filter, and major part waste water of mine penetrates into through the circular cone duct on filter in the drum-type collector of revolving filter, obtains first and slightly purifies water, and the fine suspension in waste water of mine is trapped within duct；When the membrane flux of filter reduces about 30%, open back washing device and backwash is carried out to rotation filter device.
After rotated filtration treatment, the first thick purification water is promoted to oily-water seperating equipment through flame proof elevator pump and processes.In this processing means, the oil emulsion in waste water of mine and dissolved oil, obtain second and slightly purify water, after nano ceramics film is processed, the overwhelming majority all can be trapped removal.When the membrane flux of degreasing unit reduces about 30%, opening back washing device and carrying out backwash to degreasing unit, finally, the oily sludge thing being enriched in ceramic membrane surface is removed through backwashing system.
Afterwards, the second thick water that purifies is lifted into hyperfiltration treatment device through flame proof elevator pump, and in this processing means, the small-molecular-weight micro-Organic Pollutants overwhelming majority less than 1000 μ is removed, and obtains water purification.When milipore filter flux reduces about 40%, open back washing device and backwash is carried out to ultrafiltration apparatus.
Finally, the water purification after treated purification can be back to the multiple uses such as underground hydraulic support frame coolant water, down-hole depositing dust water and down-hole fire demand water.
Although above-mentioned elaborate to the present invention; but the invention is not restricted to this; those skilled in the art can modify according to the principle of the present invention, and therefore, the various modification that all principles according to the present invention are carried out all should be understood to fall into protection scope of the present invention.
Claims (9)
1. the method for a down-hole treatment mine water, it is characterised in that include:
Abandoned Tunnel in mine is transformed into shaft sump；
Mine water is incorporated in described shaft sump and carries out precipitation process, remove the bulky grain solid in mine water
Material, obtains thick water；
Carrying out rotating filter process to described thick water by utilizing revolving filter, that removes in mine water is fine outstanding
Float, obtains first and slightly purifies water；
Carry out water-oil separating process by slightly purifying water to described first, remove the first dissolved oil slightly purifying in water
And oil emulsion, obtain second and slightly purify water；
Carry out hyperfiltration treatment by slightly purifying water to described second, remove the second organic matter slightly purifying in water,
To water purification；
Wherein, described rotating filter processes and includes:
By flowing described thick water from the top down, described thick water is made to fall into the rotation with multiple ducts below
On rotary filter；
Described revolving filter, by rotating, makes the fine suspension in described thick water be trapped within the plurality of hole
In road, thus collect the thick purification water eliminating described fine suspension；
The fine suspension being trapped in described revolving filter duct passes through effect and the institute of centrifugal force and gravity
State revolving filter to separate.
2. the method for down-hole treatment mine water as claimed in claim 1, it is characterised in that described rotary filtering
Device includes:
For collecting the thick drum-type water collector purifying water eliminating fine suspension；
Connect the rotating driving device of described drum-type water collector；
Wherein, on the barrel of drum-type water collector, dense distribution can retain multiple ducts of described fine suspension,
The outlet size in each of which duct is less than its entrance opening dimension.
3. the method for down-hole treatment mine water as claimed in claim 2, it is characterised in that its entrance of described duct
Aperture be 2-5mm, its outlet aperture be 0.5-1mm.
4. the method for down-hole treatment mine water as claimed in claim 1, it is characterised in that at described water-oil separating
Reason is slightly to purify water by nanometer pottery ware film to described first to carry out filtration treatment, removes dissolved oil therein and breast
Carburetion, obtains second and slightly purifies water.
5. the method for down-hole treatment mine water as claimed in claim 4, it is characterised in that described nano ceramics film
Average transmembrane pressure be 1-5bar, pore size filter is 0.05 μm, and average flux is 100-150L/m2/h。
6. the method for down-hole treatment mine water as claimed in claim 1, it is characterised in that described hyperfiltration treatment is
Slightly purify water by tubular membrane component to described second and carry out hyperfiltration treatment, remove organic matter therein, obtain net
Water.
7. the method for down-hole treatment mine water as claimed in claim 6, it is characterised in that cutting of described tubular membrane
Molecular weight is stayed to be 1.5 × 105μ, operating pressure is 0.1-0.16MPa.
8. the device of a down-hole treatment mine water, it is characterised in that include:
Shaft sump, is formed by the Abandoned Tunnel transformation in mine, for carrying out precipitation process to mine water, goes
Except the bulky grain solid matter in mine water, obtain thick water；
Revolving filter, for carrying out rotating filter process to described thick water, removes the fine suspension in mine water
Thing, obtains first and slightly purifies water；
Oily-water seperating equipment, carries out water-oil separating process for slightly purifying water to first, removes dissolved oil therein
And oil emulsion, obtain second and slightly purify water；
Ultrafiltration apparatus, carries out hyperfiltration treatment for slightly purifying water to second, remove second slightly purify in water organic
Thing, obtains water purification；
Wherein, described rotating filter processes and includes:
By flowing described thick water from the top down, described thick water is made to fall on revolving filter below；
Fine suspension in described thick water, by rotating, is retained and collects and eliminate institute by described revolving filter
State the thick of fine suspension and purify water；
The fine suspension being trapped on described revolving filter passes through the effect of centrifugal force and gravity and described rotation
Rotary filter separates.
9. the device of down-hole treatment mine water as claimed in claim 8, it is characterised in that described revolving filter
Including:
For collecting the thick drum-type water collector purifying water eliminating fine suspension；
Connect the rotating driving device of described drum-type water collector；
Wherein, on the barrel of drum-type water collector, dense distribution can retain multiple ducts of described fine suspension, and it is every
The outlet size in individual duct is less than its entrance opening dimension.
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| CN105060398B (en) * | 2015-08-19 | 2017-11-14 | 西藏神州瑞霖环保科技股份有限公司 | A kind of Technique of Coal Mine Drainage underground purifying treatment method |
| CN106226495B (en) * | 2016-07-14 | 2018-07-03 | 中国矿业大学 | A kind of experimental method for surveying coal mine gob spoil purifying water in mine-well |
| CN109745736A (en) * | 2018-06-05 | 2019-05-14 | 金昌中枨科技有限责任公司 | A kind of method of high-yield and high-efficiency copper mesh film process oily wastewater |
| CN108726750A (en) * | 2018-06-08 | 2018-11-02 | 南京必蓝环境技术有限公司 | A kind of exploiting field sewage water treatment method and device |
| CN109485177A (en) * | 2018-12-04 | 2019-03-19 | 北京赛诺水务科技有限公司 | A kind of underground coal mine waste water treatment, recovery and utilization and device |
| CN113354151A (en) * | 2021-06-29 | 2021-09-07 | 武汉市荣国环保科技有限公司 | Method for treating underground coal mine water |
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| GB1440593A (en) * | 1969-12-15 | 1976-06-23 | Dresser Ind | Filtering apparatus |
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| CN2140779Y (en) * | 1992-12-24 | 1993-08-25 | 陈连树 | Sieve cylinder solid-liquid separator |
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| CN101544431B (en) * | 2009-05-12 | 2012-07-18 | 王建刚 | Process for treating mine water in high efficiency |
| FR2964329B1 (en) * | 2010-09-03 | 2012-09-28 | Alfa Laval Moatti | AUTOMATIC CLEANING FILTER |
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| CN203877945U (en) * | 2014-06-16 | 2014-10-15 | 河南锦源环保科技有限公司 | Full-pneumatic ceramic membrane water purification equipment |
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