CN111792764A - Underground coal mine full-membrane modular mine wastewater treatment method and device - Google Patents
Underground coal mine full-membrane modular mine wastewater treatment method and device Download PDFInfo
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Abstract
The invention relates to a coal mine underground full-membrane modular mine wastewater treatment method and a device, which comprises the coal mine underground full-membrane modular mine wastewater treatment method and a coal mine underground full-membrane modular mine wastewater treatment device used for the water purification method, wherein the device comprises a first water lift pump, a cyclone solid-liquid separator, a first water production tank, a second water lift pump, a cyclone mixer, a cyclone clarifier, a second water production tank, an ultrafiltration circulating pump, an ultrafiltration separation device, a third water production tank, a sodium filtration water inlet pump, a sodium filtration membrane device, a fourth water production tank, a reverse osmosis water inlet pump, a reverse osmosis separation device and a final water forming tank which are sequentially connected; the whole device is simple in structure, the whole device is accurately controlled according to environmental factors, the arrangement in a mine is convenient, the purified water meets the requirement of water consumption in the mine, and the problem that a large amount of energy is consumed when the traditional ground water purifying device needs to lift the waste water in the mine to the ground for treatment is solved.
Description
Technical Field
The invention belongs to the field of wastewater purification, and particularly relates to a coal mine underground full-membrane modular mine wastewater treatment method and device.
Background
China is the country with the largest coal yield and the largest number of mines in the world, and the mine water discharge amount is also the top of the world. At present, the conventional mine water treatment process in China is 'coagulation-precipitation-filtration-disinfection': the reaction tank is mainly perforated rotational flow or partition plate, the sedimentation tank is mainly inclined tube, the filter tank is generally valveless, and sodium hypochlorite or chlorine dioxide is used for disinfection. These structures are generally large and are only suitable for surface treatment of mine water. In the treatment process of the conventional process, the coagulant is used in a large amount, the reaction time is long, the treatment cost is high, and secondary pollution is easily caused.
The existing process treatment mode is basically carried out on a well, and underground wastewater needs to be lifted to the ground firstly. But there is also a problem in that,
1. the general mine degree of depth all is around 600~1000 meters, and the required energy consumption of the lift well of a large amount of waste water in pit is huge, for example with the water lift well 600 meters of 150 m/h, just need a water pump of about 350 kW. The waste water contains a large amount of suspended substances, coal slag and other impurities, and frequent system failure can be caused. The comprehensive calculation of the well-lifting cost is very huge, and the well-lifting cost is easy to break down, so that the production is influenced.
2. The device is not accurately controlled according to the environmental parameters, and the influence caused by environmental factors is eliminated.
Disclosure of Invention
The invention aims to solve the problems and provides a coal mine underground full-membrane modular mine wastewater treatment method, which comprises the following steps:
the method comprises the steps of firstly, arranging the underground coal mine full-membrane modular mine wastewater treatment device, measuring the width, height and length of a mine tunnel before arrangement, measuring the depth of a mine and the content of a coal mine layer, calculating a comprehensive control coefficient K, uniformly collecting underground wastewater, and conveying the wastewater into a buffer pool of the full-membrane modular mine wastewater treatment device after removing stones and gravels from the wastewater through a screen by a first lifting pump;
step two, feeding the wastewater in the buffer tank into a cyclone solid-liquid separator, removing solid particles with the diameter of more than or equal to 0.1mm in the wastewater through the cyclone solid-liquid separator, conveying the wastewater to a first water production tank for temporary precipitation, simultaneously quickly dehydrating and weighing the separated solid particles, determining the weight M of the solid particles, and conveying the solid particles away after weighing;
step three, adding a flocculating agent into the wastewater in the first water production tank, sending the wastewater into a cyclone mixer for full reaction, conveying the wastewater into a cyclone clarifier through a water pump for sedimentation and separation, discharging a concentrated wastewater solution from the bottom of the cyclone clarifier, and allowing a clear wastewater solution to flow into a second water production tank from the upper part of the cyclone clarifier for temporary sedimentation;
conveying the wastewater in the second water production tank to an ultrafiltration membrane device through a water pump, conveying all the wastewater passing through the ultrafiltration membrane device to a third water production tank, and discharging impurities such as suspended matters, colloids and macromolecular organic matters intercepted by the ultrafiltration membrane out of a membrane assembly through timed gas scrubbing, water backwashing and/or forward washing and periodic chemical cleaning;
conveying the wastewater in the third water production tank to a nanofiltration membrane device through a nanofiltration water inlet pump, wherein the flow and the lift of the nanofiltration water inlet pump need to be adjusted in real time so as to flush away impurities intercepted on the surface of the nanofiltration membrane when water flows pass through, conveying the wastewater passing through the nanofiltration membrane device to a fourth water production tank, and discharging the intercepted colloids, micromolecular organic matters, ions and ions out of a membrane module;
and step six, conveying the wastewater in the fourth water production tank to a reverse osmosis separation device through a high-pressure water pump, conveying the wastewater passing through the reverse osmosis separation device to a final water tank, and taking away small molecular organic matters, ions and ions in the wastewater by concentrated water to discharge the wastewater out of the membrane module.
Further, according to the length L, the height H, the width D of the mine roadway, the depth E of the mine, the altitude R of the mine, and the real-time temperature T and humidity C in the mine roadway, the comprehensive control coefficient K is calculated by the following formula,
v0 represents a preset mine roadway space, L represents the length L of an actual mine roadway, H represents the actual mine height, D represents the actual mine roadway width, R represents the actual roadway mine altitude, E represents the mine depth, T represents the real-time temperature T in the roadway, C represents the real-time temperature C in the roadway, K represents a parameter which is a preset value, and after calculation is completed, the water delivery amount entering the cyclone solid-liquid separator once is determined according to the parameter K.
Further, the second step is pre-designed with an equipment input information matrix P (P1, P2, P3), wherein P1 represents the first-level water delivery rate, P2 represents the second-level water delivery rate, P3 represents the third-level water delivery rate, the hourly water delivery rate of the wastewater entering the cyclone solid-liquid separator is determined by comparing the comprehensive control coefficient K with preset comparison parameters K1 and K2,
when K < K1, a first grade water conveying amount P1 is conveyed to the cyclone solid-liquid separator in a single time;
when K1< K < K2, the second grade water conveying amount P2 is conveyed to the cyclone solid-liquid separator in a single time;
and when K is more than K3, the third grade water conveying amount P3 is fed to the cyclone solid-liquid separator in a single time.
Further, in the third step, a precipitation matrix Z (Z1, Z2, Z3, Z4) is preset, wherein Z1 represents a first precipitation matrix, Z2 represents a second precipitation matrix, Z3 represents a third precipitation matrix, and Z4 represents a fourth precipitation matrix; i =1,2,3,4 for any one of the sedimentation matrices Zi (Zi 1, Zi 2), where Zi1 represents a first weight interval and Zi2 represents a first grade flocculant addition, the amount of flocculant added in said third step being determined by comparing the amount of solid particles M screened in step two with parameters in said sedimentation matrix Z (Z1, Z2, Z3, Z4), which, when determined,
when M belongs to a first weight interval Z11, adopting a first grade flocculant adding amount Z12;
when M belongs to a second weight interval Z21, adopting a second grade flocculant adding amount Z22;
when M belongs to a third weight interval Z31, adopting a third-grade flocculant adding amount Z32;
when M belongs to a fourth weight interval Z41, adopting a fourth grade flocculant adding amount Z42;
further, the third step is preset with a mixing matrix J (J1, J2, J3, J4), wherein J1 represents a first mixing time, J2 represents a second mixing time, J3 represents a third mixing time, J4 represents a fourth mixing time, in the third step, the mixing time of the wastewater in the cyclone mixer is determined by the amount Zi2 of the added flocculating agent and a comprehensive control coefficient K,
when the amount of the flocculant added is Z12, the mixing time is 60s
;
When the amount of the flocculant added is Z22, the mixing time is 80s
;
When the amount of the flocculant added is Z32, the mixing time is 100s
;
When the amount of the flocculant added is Z42, the mixing time is 120s
。
Further, the invention provides a coal mine underground integral membrane modular mine wastewater treatment device, which is used for treating wastewater by using a coal mine underground integral membrane modular mine wastewater treatment method, and comprises the following steps:
the first water lift pump that connects gradually, whirl solid-liquid separator, first product pond, second water lift pump, cyclone mixer, whirl clarifier, second product pond, ultrafiltration circulating pump, ultrafiltration separator, third product pond, nanofiltration intake pump, nanofiltration membrane device, fourth product water tank, reverse osmosis intake pump, reverse osmosis separator and the final water tank that becomes, be provided with agitating unit in the cyclone mixer, nanofiltration membrane in the nanofiltration membrane device adopts the formula membrane of book.
Furthermore, a high-speed camera is arranged on one side of the sodium filter membrane device and connected with an adjusting system of a sodium filter water inlet pump, and is used for shooting the impurity accumulation condition on the surface of the sodium filter membrane and uploading information to the adjusting system.
Further, the sodium filtration water inlet pump is provided with an adjusting system, the adjusting system is connected with a motor of the sodium filtration water inlet pump and used for controlling the flow rate and the lift of the sodium filtration water inlet pump, the adjusting system is provided with an adjusting matrix U (U1, U2 and U3), U1 represents a first grade adjusting matrix, U2 represents a second grade adjusting matrix, U3 represents a third grade adjusting matrix, and U4 represents a fourth grade adjusting matrix; for the ith rank adjustment matrix Ui (Ui 1, Ui 2), i =1,2,3,4, where Ui1 represents the first rank sodium filtered intake pump flow rate and Ui2 represents the second rank sodium filtered intake pump head; when the adjusting system receives the information sent by the high-speed camera, the surface impurity accumulation area S0 of the nanofiltration membrane is judged, adjusting contrast parameters u1 and u2 are preset in the adjusting system to adjust the flow and the lift of the nanofiltration water inlet pump, and when adjusting,
when the impurity accumulation area S0 on the surface of the sodium filter membrane is less than U1, the adjusting system controls the flow of the sodium filter water inlet pump to adopt a first grade sodium filter water inlet pump flow U11, and the head adopts a first grade sodium filter water inlet pump head U12;
when the impurity accumulation area U1 of the surface of the sodium filter membrane is more than S0 and less than U2, the adjusting system controls the flow of the sodium filter water inlet pump to adopt the flow U21 of a second grade sodium filter water inlet pump, and the head adopts the head U22 of the second grade sodium filter water inlet pump;
when the impurity accumulation area U2 on the surface of the sodium filter membrane is less than S0, the adjusting system controls the flow of the sodium filter water inlet pump to adopt a first-grade sodium filter water inlet pump flow U31, and the head adopts a first-grade sodium filter water inlet pump head U31.
Compared with the prior art, the coal mine underground full-membrane modular mine wastewater treatment method and the device have the technical effects that the water quantity input into the solid-liquid separator is determined by calculating the comprehensive control coefficient K, the overload of the whole device is prevented, the overhigh temperature in a tunnel in the wastewater filtering process is prevented, the influence of environmental factors on the whole water purifying process is reduced, particularly the influence on a water pump under the condition of large environmental parameter change is reduced, the wastewater is pretreated by the cyclone solid-liquid separator to remove solid particles with the diameter of more than 0.1mm, a cyclone clarifier is used for treating fine particles with the diameter of less than 0.1mm, the floating material of the treated wastewater is less than 10mg/L, the wastewater is conveniently filtered by a subsequent sodium filter membrane device, the hardness of water can be reduced by the sodium filter membrane device, and the reverse osmosis separation device is protected, the reverse osmosis separation device is ensured to have no scaling risk basically, multivalent ions and monovalent ions are separated, the separated wastewater is separated into concentrated water through the reverse osmosis separation device, the concentrated water is high in concentration rate and high in salt content and can be evaporated and crystallized after being conveyed to the ground, the purity of produced salt can reach more than 99.6%, the industrial salt standard of the general chlor-alkali industry is met, the whole device is simple in structure, convenient to set in a mine and good in water purification effect, the purified water meets the requirement of water usage under the mine, the energy consumed by the traditional ground water purification device for lifting the sewage under the mine to the ground for treatment is reduced, and the filtrate of the produced water in the production process can be crystallized into salt, so that the device is beneficial to environmental protection.
Particularly, according to the length L, the height H, the width D, the depth E of a mine tunnel, the altitude R of the mine tunnel, the real-time temperature T and the real-time humidity C in the mine tunnel, the comprehensive control coefficient K is calculated through the following formula, the parameters are convenient to detect and convenient to continuously detect, the water purification process is influenced to a certain extent, the water purification method is convenient to adjust through the comprehensive control coefficient K in the subsequent steps by calculating the comprehensive control coefficient K, and the influence of the environment on the water purification process is eliminated.
Particularly, an equipment input information matrix P (P1, P2 and P3) is designed in advance in the step two, the water quantity input into the solid-liquid separator is determined through the comprehensive coefficient K, the influence of the environment on the water purification process is reduced, and the whole water purification device is ensured not to be overloaded.
Particularly, the amount of the flocculant added in the third step is determined by comparing the amount M of the solid particles screened in the second step with parameters in the precipitation matrix Z (Z1, Z2, Z3 and Z4), and then the mixing time is determined by combining the mixing matrix J (J1, J2, J3 and J4), so that the accurate control of the whole water purifying device is facilitated, the full mixing of the flocculant and the wastewater is ensured, the floater of the treated wastewater is less than 10mg/L, the next treatment is facilitated, and the water purifying effect of the whole water purifying device is indirectly improved.
Particularly, the sodium filtration water inlet pump is provided with an adjusting system, the adjusting system is connected with a motor of the sodium filtration water inlet pump and used for controlling the flow and the lift of the sodium filtration water inlet pump, the adjusting system is provided with an adjusting matrix U (U1, U2 and U3), the flow and the lift of the sodium filtration water inlet pump are accurately controlled by detecting the impurity coverage rate of the surface of the sodium filtration membrane and combining the adjusting matrix U (U1, U2 and U3), so that the membrane surface is ensured to keep higher flow velocity, and the impurities intercepted on the membrane surface can be taken away by generating shearing force, so that a pollution layer is kept at a thinner level, the water purification efficiency and the water purification quality are improved, and the water purification effect of the whole water purification device is indirectly improved.
Particularly, the sodium filtering device is arranged in the fifth step of the invention, so that the invention has two advantages, one is that the water quality is softened, the scaling substances are prevented from entering the reverse osmosis system, and after the sodium filtering treatment, the rejection rate of the salt with more than divalent property can reach more than 99.6 percent, thereby ensuring that the reverse osmosis separation device basically has no scaling risk; and secondly, the multivalent ions and the monovalent ions are separated, concentrated water after being concentrated again by the reverse osmosis device has high concentration ratio and large salt content, is thick when being pumped to the ground and can be evaporated and crystallized, the purity of output salt can reach more than 99.6 percent, the industrial salt standard of the general chlor-alkali industry is met, the concentrated water is directly sold, the water purification effect of the device is improved, the waste is recycled, and the environment-friendly effect is achieved.
Drawings
FIG. 1 is a structural diagram of a coal mine underground full-membrane modular mine wastewater treatment device provided by an embodiment of the invention.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a structural diagram of a coal mine underground full-membrane modular mine wastewater treatment device according to an embodiment of the invention. The embodiment provides a full-membrane modular mine wastewater treatment method for an underground coal mine, which comprises the following steps:
the method comprises the steps of firstly, arranging the underground coal mine full-membrane modular mine wastewater treatment device, measuring the width, height and length of a mine tunnel before arrangement, measuring the depth of a mine and the content of a coal mine layer, calculating a comprehensive control coefficient K, uniformly collecting underground wastewater, and conveying the wastewater into a buffer pool of the full-membrane modular mine wastewater treatment device after removing stones and gravels from the wastewater through a screen by a water pump;
step two, feeding the wastewater in the buffer tank into a cyclone solid-liquid separator, removing solid particles with the diameter of more than or equal to 0.1mm in the wastewater through the cyclone solid-liquid separator 2, conveying the wastewater to a first water producing tank 3 for short-term precipitation, simultaneously quickly dehydrating and weighing the separated solid particles, determining the weight M of the solid particles, and conveying the solid particles away after weighing;
step three, adding a flocculating agent into the wastewater in the first water producing tank 3, sending the wastewater into a cyclone mixer 5 for full reaction, then conveying the wastewater into a cyclone clarifier 6 for sedimentation and separation, discharging a concentrated wastewater solution from the bottom of the cyclone clarifier 6, and allowing a clear wastewater solution to flow into a second water producing tank 7 from the upper part of the cyclone clarifier 6 for temporary sedimentation;
step four, conveying the wastewater in the second water production tank 7 to an ultrafiltration membrane device 9 through an ultrafiltration circulating pump 8, conveying all the wastewater passing through the ultrafiltration membrane device 9 into a third water production tank 10, and discharging impurities such as suspended matters, colloids and macromolecular organic matters intercepted by the ultrafiltration membrane out of a membrane module through timed gas scrubbing, water backwashing and/or forward washing and periodic chemical cleaning;
fifthly, conveying the wastewater in the third production water tank 10 to a nanofiltration membrane device 12 through a nanofiltration water inlet pump 11, wherein the flow and the lift of the nanofiltration water inlet pump 11 need to be adjusted in real time so as to flush away impurities intercepted on the surface of the nanofiltration membrane when water flows through, conveying the wastewater passing through the nanofiltration membrane device 12 to a fourth production water tank 13, and discharging the intercepted colloids, micromolecular organic matters, ions and ions out of the nanofiltration membrane device 12;
and step six, conveying the wastewater in the fourth water production tank 13 to a reverse osmosis separation device 15 through a reverse osmosis water inlet pump 14, and conveying the wastewater passing through the reverse osmosis separation device 15 to a final water tank 16, so that small molecular organic matters, ions and ions in the wastewater are taken away by concentrated water and discharged out of the membrane module.
Specifically, the method comprises the steps of arranging the underground coal mine full-membrane modular mine wastewater treatment device, measuring the width, height and length of a mine tunnel before arrangement, measuring the depth and coal mine layer content of a mine, calculating a comprehensive control coefficient K, uniformly collecting underground wastewater, and conveying the wastewater into a buffer pool of the full-membrane modular mine wastewater treatment device after removing stones and gravels through a screen by a water pump; the step one is that a comprehensive control coefficient K is calculated by the following formula according to the length L, the height H, the width D of the mine tunnel, the depth E of the mine, the altitude R of the mine, and the real-time temperature T and humidity C in the mine tunnel,
v0 represents a preset mine roadway space, L represents the length L of an actual mine roadway, H represents the actual mine height, D represents the actual mine roadway width, R represents the actual roadway mine altitude, E represents the mine depth, T represents the real-time temperature T in the roadway, C represents the real-time temperature C in the roadway, K represents a parameter which is a preset value, and after calculation is completed, the water delivery amount entering the cyclone solid-liquid separator once is determined according to the parameter K.
Specifically, the wastewater in the buffer tank is sent into a cyclone solid-liquid separator, solid particles with the diameter of more than or equal to 0.1mm in the wastewater are removed by the cyclone solid-liquid separator 2, then the wastewater is sent to a first water producing tank 3 for temporary precipitation, meanwhile, the separated solid particles are quickly dehydrated and weighed, the weight M of the solid particles is determined, and the solid particles are conveyed away after weighing; in the second step, the quantity of the wastewater conveyed to the cyclone solid-liquid separator needs to be controlled to ensure that the whole equipment cannot run overheated in a mine roadway, an equipment input information matrix P (P1, P2 and P3) is designed in advance, wherein P1 represents first-level water delivery, P2 represents second-level water delivery, P3 represents third-level water delivery, and when the hourly water delivery of the wastewater entering the cyclone solid-liquid separator 2 is determined by comparing the comprehensive control coefficient K with preset comparison parameters K1 and K2,
when K < K1, a first grade of water delivery quantity P1 is sent to the cyclone solid-liquid separator 2 in a single time;
when K1< K < K2, the second grade water conveying amount P2 is conveyed to the cyclone solid-liquid separator 2 in a single time;
and when K is more than K3, the third grade water conveying amount P3 is fed to the cyclone solid-liquid separator 2 in a single time.
Specifically, in the third step, a flocculating agent is added into the wastewater in the first water producing tank 3, the wastewater is conveyed into a cyclone mixer 5 for full reaction and then conveyed into a cyclone clarifier 6 for sedimentation and separation, a concentrated wastewater solution is discharged from the bottom of the cyclone clarifier 6, and a clear wastewater solution flows into a second water producing tank 7 from the upper part of the cyclone clarifier 6 for short-time sedimentation; in the third step, a precipitation matrix Z (Z1, Z2, Z3 and Z4) is preset, wherein Z1 represents a first precipitation matrix, Z2 represents a second precipitation matrix, Z3 represents a third precipitation matrix, and Z4 represents a fourth precipitation matrix; i =1,2,3,4 for any one of the sedimentation matrices Zi (Zi 1, Zi 2), where Zi1 represents a first weight interval and Zi2 represents a first grade flocculant addition, the amount of flocculant added in said third step being determined by comparing the amount of solid particles M screened in step two with parameters in said sedimentation matrix Z (Z1, Z2, Z3, Z4), which, when determined,
when M belongs to a first weight interval Z11, adopting a first grade flocculant adding amount Z12;
when M belongs to a second weight interval Z21, adopting a second grade flocculant adding amount Z22;
when M belongs to a third weight interval Z31, adopting a third-grade flocculant adding amount Z32;
when M belongs to the fourth weight interval Z41, a fourth grade flocculant addition Z42 is taken.
In particular, the third step is preset with a mixing matrix J (J1, J2, J3, J4), wherein J1 represents a first mixing time, J2 represents a second mixing time, J3 represents a third mixing time, and J4 represents a fourth mixing time, in the third step, the mixing time of the wastewater in the cyclone mixer 2 is determined by the amount Zi2 of the added flocculating agent and a comprehensive control coefficient K,
when the amount of the flocculant added is Z12, the mixing time is 60s
;
When the amount of the flocculant added is Z22, the mixing time is 80s
;
When the amount of the flocculant added is Z32, the mixing time is100s×
;
When the amount of the flocculant added is Z42, the mixing time is 120s
。
Specifically, the mine water with fine particles is treated by the third cyclone clarifier 6, and the floaters of the treated wastewater are less than 10 mg/L.
Specifically, in the fourth step, the wastewater in the second water production tank 7 is conveyed to an ultrafiltration membrane device 9 through an ultrafiltration circulating pump 8, all the wastewater passing through the ultrafiltration membrane device 9 is conveyed into a third water production tank 10, impurities such as suspended matters, colloids and macromolecular organic matters intercepted by the ultrafiltration membrane are scrubbed, backwashed and/or washed by water through timed gas and are discharged out of a membrane module through periodic chemical cleaning, and the ultrafiltration membrane device adopts a ceramic membrane, so that substances such as suspended matters, colloids and bacteria in the mine water can be intercepted by utilizing the advantages of strong pollution resistance, strong restorability, strong physical structure strength and the like of the ceramic membrane, and more than 99% of the suspended matters and bacteria can be intercepted through the fourth step, so that a subsequent sodium filtration membrane system is protected.
Specifically, step five, the wastewater in the third product water tank 10 is conveyed to a nanofiltration membrane device 12 through a nanofiltration water inlet pump 11, the flow and the lift of the nanofiltration membrane water inlet pump 11 need to be adjusted in real time, so that impurities intercepted on the surface of the nanofiltration membrane are washed away when water flows pass through, the wastewater passing through the nanofiltration membrane device 12 is conveyed to a fourth product water tank 13, and the intercepted colloids, micromolecular organic matters, ions and ions are discharged out of the nanofiltration membrane device 12; the purpose of adopting the sodium filter membrane device is to soften water quality and prevent scaling substances from entering the reverse osmosis separation device 15, after sodium filtration treatment, the rejection rate of salt with more than divalent can reach more than 99.6 percent, and the reverse osmosis separation device 15 is ensured to have no scaling risk basically; secondly, in order to separate multivalent ions from monovalent ions, the concentrated water after being re-concentrated by reverse osmosis has high concentration ratio and large salt content, is thick when being pumped to the ground and can be evaporated and crystallized, the purity of the produced salt can reach more than 99.6 percent, the industrial salt standard of the general chlor-alkali industry is met, the concentrated water is directly sold, and the harm of solid miscellaneous salt (hazardous waste) to the environment is reduced.
Specifically, in the step 5, the wastewater in the fourth water production tank 13 is conveyed to a reverse osmosis separation device 15 through a reverse osmosis water inlet pump 14, the wastewater passing through the reverse osmosis separation device 15 is conveyed to a final water tank 16, so that small molecular organic matters, ions and ions in the wastewater are taken away by concentrated water and discharged out of a membrane module, monovalent salt in the effluent water from the sodium filter membrane device 12 is separated, the desalination rate reaches 99.6%, the effluent water quality can reach the standard of underground standby water, high-end requirements of coal mining, coal washing and the like in new production activities are met, and the water resource is recycled.
Specifically, with continuing reference to fig. 1, the present invention provides a coal mine underground full membrane modular mine wastewater treatment apparatus for treating wastewater by a coal mine underground full membrane modular mine wastewater treatment method, the membrane modular mine wastewater treatment apparatus comprising:
the first water lift pump 1 that connects gradually, whirl solid-liquid separator 2, first product pond 3, second water lift pump 4, cyclone 5, cyclone clarifier 6, second product pond 7, ultrafiltration circulating pump 8, ultrafiltration separator 9, third product pond 10, nanofiltration intake pump 11, nanofiltration membrane device 12, fourth product water tank 13, reverse osmosis intake pump 14, reverse osmosis separator 15 and finally become water tank 16, be provided with agitating unit in the cyclone 5, the nanofiltration membrane in the nanofiltration membrane device 12 adopts a roll membrane.
Specifically, a high-speed camera is arranged on one side of the nanofiltration membrane device 12, and is connected with a regulating system of the nanofiltration water inlet pump 11, so as to shoot the impurity accumulation condition on the surface of the nanofiltration membrane and upload information to the regulating system.
Specifically, the nanofiltration water inlet pump 11 is provided with a regulating system, the regulating system is connected with a motor of the nanofiltration water inlet pump 11 and is used for controlling the flow rate and the lift of the nanofiltration water inlet pump, the regulating system is provided with a regulating matrix U (U1, U2, U3), U1 represents a first grade regulating matrix, U2 represents a second grade regulating matrix, U3 represents a third grade regulating matrix, and U4 represents a fourth grade regulating matrix; for the ith rank adjustment matrix Ui (Ui 1, Ui 2), i =1,2,3,4, where Ui1 represents the first rank sodium filtered intake pump flow rate and Ui2 represents the second rank sodium filtered intake pump head; when the adjusting system receives the information sent by the high-speed camera, the surface impurity accumulation area S0 of the nanofiltration membrane is judged, adjusting contrast parameters u1 and u2 are preset in the adjusting system to adjust the flow and the lift of the nanofiltration water inlet pump, and when adjusting,
when the impurity accumulation area S0 on the surface of the sodium filter membrane is less than U1, the adjusting system controls the flow of the sodium filter water inlet pump to adopt a first grade sodium filter water inlet pump flow U11, and the head adopts a first grade sodium filter water inlet pump head U12;
when the impurity accumulation area U1 of the surface of the sodium filter membrane is more than S0 and less than U2, the adjusting system controls the flow of the sodium filter water inlet pump to adopt the flow U21 of a second grade sodium filter water inlet pump, and the head adopts the head U22 of the second grade sodium filter water inlet pump;
when the impurity accumulation area U2 on the surface of the sodium filter membrane is less than S0, the adjusting system controls the flow of the sodium filter water inlet pump to adopt a first-grade sodium filter water inlet pump flow U31, and the head adopts a first-grade sodium filter water inlet pump head U31.
Particularly, the underground coal mine full-membrane modular mine wastewater treatment device adopts a skid-mounted modular design, can be directly positioned, installed and operated underground after engineering manufacture is finished, and does not need underground secondary construction.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (8)
1. A coal mine underground full-membrane modular mine wastewater treatment method is characterized by comprising the following steps:
the method comprises the steps of firstly, arranging the underground coal mine full-membrane modular mine wastewater treatment device, measuring the width, height and length of a mine tunnel before arranging the device, measuring the depth of a mine and the content of a coal mine layer, calculating a comprehensive control coefficient K, uniformly collecting underground wastewater, and conveying the wastewater into a buffer pool of the full-membrane modular mine wastewater treatment device after removing stones and gravels through a screen by a first lifting pump;
step two, feeding the wastewater in the buffer tank into a cyclone solid-liquid separator, removing solid particles with the diameter of more than or equal to 0.1mm in the wastewater through the cyclone solid-liquid separator, conveying the wastewater to a first water production tank for temporary precipitation, simultaneously quickly dehydrating and weighing the separated solid particles, determining the weight M of the solid particles, and conveying the solid particles away after weighing;
step three, adding a flocculating agent into the wastewater in the first water production tank, sending the wastewater into a cyclone mixer for full reaction, conveying the wastewater into a cyclone clarifier through a water pump for sedimentation and separation, discharging a concentrated wastewater solution from the bottom of the cyclone clarifier, and allowing a clear wastewater solution to flow into a second water production tank from the upper part of the cyclone clarifier for temporary sedimentation;
conveying the wastewater in the second water production tank to an ultrafiltration membrane device through a water pump, conveying all the wastewater passing through the ultrafiltration membrane device to a third water production tank, and discharging impurities such as suspended matters, colloids and macromolecular organic matters intercepted by the ultrafiltration membrane out of a membrane assembly through timed gas scrubbing, water backwashing and/or forward washing and periodic chemical cleaning;
conveying the wastewater in the third water production tank to a nanofiltration membrane device through a nanofiltration water inlet pump, wherein the flow and the lift of the nanofiltration water inlet pump need to be adjusted in real time so as to flush away impurities intercepted on the surface of the nanofiltration membrane when water flows pass through, conveying the wastewater passing through the nanofiltration membrane device to a fourth water production tank, and discharging the intercepted colloids, micromolecular organic matters, ions and ions out of a membrane module;
and step six, conveying the wastewater in the fourth water production tank to a reverse osmosis separation device through a high-pressure water pump, conveying the wastewater passing through the reverse osmosis separation device to a final water tank, and taking away small molecular organic matters, ions and ions in the wastewater by concentrated water to discharge the wastewater out of the membrane module.
2. The underground coal mine full-membrane modular mine wastewater treatment method according to claim 1, wherein the step of calculating the comprehensive control coefficient K according to the length L, the height H, the width D of the mine roadway, the depth E of the mine, the altitude R of the mine, and the real-time temperature T and the real-time humidity C in the mine roadway by the following formula,
v0 represents a preset mine roadway space, L represents the length L of an actual mine roadway, H represents the actual mine height, D represents the actual mine roadway width, R represents the actual roadway mine altitude, E represents the mine depth, T represents the real-time temperature T in the roadway, C represents the real-time temperature C in the roadway, K represents a parameter which is a preset value, and after calculation is completed, the water delivery amount entering the cyclone solid-liquid separator once is determined according to the parameter K.
3. The underground coal mine full-membrane modular mine wastewater treatment method as claimed in claim 2, wherein the second step is pre-designed with an equipment input information matrix P (P1, P2, P3), wherein P1 represents the first-level water transportation quantity, P2 represents the second-level water transportation quantity, P3 represents the third-level water transportation quantity, and when the hourly water transportation quantity of wastewater entering the cyclone solid-liquid separator is determined by comparing the comprehensive control coefficient K with preset comparison parameters K1 and K2,
when K < K1, a first grade water conveying amount P1 is conveyed to the cyclone solid-liquid separator in a single time;
when K1< K < K2, the second grade water conveying amount P2 is conveyed to the cyclone solid-liquid separator in a single time;
and when K is more than K3, the third grade water conveying amount P3 is fed to the cyclone solid-liquid separator in a single time.
4. The underground coal mine full-membrane modular mine wastewater treatment method according to claim 1, wherein the underground coal mine full-membrane modular mine wastewater treatment method comprises the following steps
Characterized in that in the third step, a precipitation matrix Z (Z1, Z2, Z3 and Z4) is preset, wherein Z1 represents a first precipitation matrix, Z2 represents a second precipitation matrix, Z3 represents a third precipitation matrix, and Z4 represents a fourth precipitation matrix; i =1,2,3,4 for any one of the sedimentation matrices Zi (Zi 1, Zi 2), where Zi1 represents a first weight interval and Zi2 represents a first grade flocculant addition, the amount of flocculant added in said third step being determined by comparing the amount of solid particles M screened in step two with parameters in said sedimentation matrix Z (Z1, Z2, Z3, Z4), which, when determined,
when M belongs to a first weight interval Z11, adopting a first grade flocculant adding amount Z12;
when M belongs to a second weight interval Z21, adopting a second grade flocculant adding amount Z22;
when M belongs to a third weight interval Z31, adopting a third-grade flocculant adding amount Z32;
when M belongs to the fourth weight interval Z41, a fourth grade flocculant addition Z42 is taken.
5. The underground coal mine full-membrane modular mine wastewater treatment method according to claim 4, wherein the underground coal mine full-membrane modular mine wastewater treatment method comprises the following steps
Characterized in that a mixing matrix J (J1, J2, J3, J4) is preset in the third step, wherein J1 represents a first mixing time, J2 represents a second mixing time, J3 represents a third mixing time, J4 represents a fourth mixing time, in the third step, the mixing time of the wastewater in the cyclone mixer is determined by the amount Zi2 of the added flocculating agent and a comprehensive control coefficient K,
when the amount of the flocculant added is Z12, the mixing time is 60s
;
When the amount of the flocculant added is Z22 hours, the mixing time is 80s
;
When the amount of the flocculant added is Z32, the mixing time is 100s
;
When the amount of the flocculant added is Z42, the mixing time is 120s
。
6. A coal mine underground full-membrane modular mine wastewater treatment device for treating wastewater by using the wastewater treatment method of any one of claims 1 to 5, wherein the membrane modular mine wastewater treatment device comprises: the first water lift pump that connects gradually, whirl solid-liquid separator, first product pond, second water lift pump, cyclone mixer, whirl clarifier, second product pond, ultrafiltration circulating pump, ultrafiltration separator, third product pond, nanofiltration intake pump, nanofiltration membrane device, fourth product water tank, reverse osmosis intake pump, reverse osmosis separator and the final water tank that becomes, be provided with agitating unit in the cyclone mixer, nanofiltration membrane in the nanofiltration membrane device adopts the formula membrane of book.
7. The underground coal mine full-membrane modular mine wastewater treatment device as claimed in claim 6, wherein a high-speed camera is arranged on one side of a nanofiltration membrane of the nanofiltration membrane device, and is connected with a regulation system of a nanofiltration water inlet pump, so as to shoot the impurity accumulation condition on the surface of the nanofiltration membrane and upload information to the regulation system.
8. The underground coal mine full-membrane modular mine wastewater treatment device as claimed in claim 7, wherein the sodium filtration water inlet pump is provided with a regulating system, the regulating system is connected with a motor of the sodium filtration water inlet pump and used for controlling the flow rate and the lift of the sodium filtration water inlet pump, the regulating system is provided with a regulating matrix U (U1, U2 and U3), U1 represents a first grade regulating matrix, U2 represents a second grade regulating matrix, U3 represents a third grade regulating matrix, and U4 represents a fourth grade regulating matrix; for the ith rank adjustment matrix Ui (Ui 1, Ui 2), i =1,2,3,4, where Ui1 represents the first rank sodium filtered intake pump flow rate and Ui2 represents the second rank sodium filtered intake pump head; when the adjusting system receives the information sent by the high-speed camera, the surface impurity accumulation area S0 of the nanofiltration membrane is judged, adjusting contrast parameters u1 and u2 are preset in the adjusting system to adjust the flow and the lift of the nanofiltration water inlet pump, and when adjusting,
when the impurity accumulation area S0 on the surface of the sodium filter membrane is less than U1, the adjusting system controls the flow of the sodium filter water inlet pump to adopt a first grade sodium filter water inlet pump flow U11, and the head adopts a first grade sodium filter water inlet pump head U12;
when the impurity accumulation area U1 of the surface of the sodium filter membrane is more than S0 and less than U2, the adjusting system controls the flow of the sodium filter water inlet pump to adopt the flow U21 of a second grade sodium filter water inlet pump, and the head adopts the head U22 of the second grade sodium filter water inlet pump;
when the impurity accumulation area U2 on the surface of the sodium filter membrane is less than S0, the adjusting system controls the flow of the sodium filter water inlet pump to adopt a first-grade sodium filter water inlet pump flow U31, and the head adopts a first-grade sodium filter water inlet pump head U31.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115072928A (en) * | 2022-08-19 | 2022-09-20 | 天津高能时代水处理科技有限公司 | Mine water advanced treatment system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107777803A (en) * | 2016-08-25 | 2018-03-09 | 中煤鄂尔多斯能源化工有限公司 | The processing system and handling process of a kind of Technique of Coal Mine Drainage |
| CN108911203A (en) * | 2018-07-13 | 2018-11-30 | 江苏大学 | A kind of integration mine water deeply processing unit |
| CN108928963A (en) * | 2018-07-23 | 2018-12-04 | 徐州工程学院 | A kind of mine wastewater treatment device |
| CN210001701U (en) * | 2019-01-22 | 2020-01-31 | 国家能源投资集团有限责任公司 | system for treating mine water with high suspended matter and high mineralization degree |
| CN111039480A (en) * | 2019-06-27 | 2020-04-21 | 江苏久吾高科技股份有限公司 | Method and device for reducing salt in mine water |
| US10625211B2 (en) * | 2006-06-13 | 2020-04-21 | Evoqua Water Technologies Llc | Method and system for water treatment |
-
2020
- 2020-09-08 CN CN202010932480.0A patent/CN111792764B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10625211B2 (en) * | 2006-06-13 | 2020-04-21 | Evoqua Water Technologies Llc | Method and system for water treatment |
| CN107777803A (en) * | 2016-08-25 | 2018-03-09 | 中煤鄂尔多斯能源化工有限公司 | The processing system and handling process of a kind of Technique of Coal Mine Drainage |
| CN108911203A (en) * | 2018-07-13 | 2018-11-30 | 江苏大学 | A kind of integration mine water deeply processing unit |
| CN108928963A (en) * | 2018-07-23 | 2018-12-04 | 徐州工程学院 | A kind of mine wastewater treatment device |
| CN210001701U (en) * | 2019-01-22 | 2020-01-31 | 国家能源投资集团有限责任公司 | system for treating mine water with high suspended matter and high mineralization degree |
| CN111039480A (en) * | 2019-06-27 | 2020-04-21 | 江苏久吾高科技股份有限公司 | Method and device for reducing salt in mine water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115072928A (en) * | 2022-08-19 | 2022-09-20 | 天津高能时代水处理科技有限公司 | Mine water advanced treatment system and method |
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