CN112794496A - Method and system for removing suspended matters and recycling coal slime from mine water - Google Patents
Method and system for removing suspended matters and recycling coal slime from mine water Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 239000003245 coal Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004064 recycling Methods 0.000 title abstract description 8
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- 238000005188 flotation Methods 0.000 claims abstract description 38
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- 238000011282 treatment Methods 0.000 claims description 34
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/08—Subsequent treatment of concentrated product
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/08—Coal ores, fly ash or soot
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
- C02F1/385—Treatment of water, waste water, or sewage by centrifugal separation by centrifuging suspensions
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/001—Build in apparatus for autonomous on board water supply and wastewater treatment (e.g. for aircrafts, cruiseships, oil drilling platforms, railway trains, space stations)
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/04—Surfactants, used as part of a formulation or alone
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Dispersion Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method and a system for removing suspended matters and recycling coal slime from mine water, wherein the system comprises a raw water pool, a cyclone separator, a high-density sedimentation tank, a sludge pool, a first filtering unit, a flotation unit and a second filtering unit; meanwhile, the flocculant charging and dissolving system can ensure that the flocculant is quickly and fully dissolved under low energy consumption and can realize the supply of the flocculant solution according to the requirement and the fixed quantity.
Description
Technical Field
The invention relates to the technical field of underground mine water treatment, in particular to a method and a system for removing suspended matters and recycling coal slime from mine water.
Background
During mine construction and production, atmospheric precipitation, surface water (rivers, lakes, seas, reservoirs and the like) and underground water can all possibly flow into the underground through various channels, and the water is generally called mine water inflow. In the coal mining process, underground water is in contact with a coal bed and a rock stratum and has a series of physical, chemical and biochemical reactions under the influence of human activities, so that the water quality has obvious characteristics in the coal industry: the mine water containing suspended matters has the suspended matter content far higher than that of surface water, large turbidity, black water body and poor sensory property; the particle size of the contained suspended matters is small, the specific gravity is light, the sedimentation speed is slow, and the coagulation effect is poor; mine water contains much higher total ion content than general surface water, and a large part of mine water is sulfate ions, which increases the difficulty of treatment.
The mine water has large water quantity and relatively simple water quality, but how to treat and utilize the mine water with low cost and high efficiency is a difficult problem of industrial application, and a corresponding treatment technology needs to be developed according to actual requirements so as to recycle the mine water to the maximum extent. According to the characteristics of mine water, the mine water can be roughly divided into five types: 1) cleaning mine water; 2) mine water containing suspended matters; 3) highly mineralized mine water; 4) acid mine water; 5) mine water containing special pollutants. The high-suspended substance mine water accounts for a high proportion in the total amount of five kinds of mine water, so that the mine water treatment is deeply researched, and the development of a corresponding treatment method is very important for promoting the mine water treatment and reducing the treatment cost.
The treatment of mine water with high suspended matter and high mineralization degree is a key difficult point in the mine water treatment, and the mine water is discharged into a water body without treatment, so that the ground water body is seriously polluted, the landscape is destroyed, rivers, lakes and farmlands are silted up, the growth of aquatic organisms and crops is influenced, and the soil salinization is caused. The suspended matters in the coal mine water with high suspended matters mainly comprise coal powder, rock powder and the like with small granularity and light specific gravity, and have the characteristics of low sedimentation speed, difficult formation of alum floc, poor sedimentation effect and the like. A settling tank or clarifier is typically employed as the primary treatment unit. A common sedimentation tank is provided with advection type sedimentation and inclined pipe (plate) sedimentation, the treatment energy consumption is low, but the occupied area of treatment facilities is large, and the sedimentation sludge is easy to block, so that the sludge discharge is not smooth. In addition, the sludge generated by the treatment of the high suspended substance mine water contains a large amount of coal slime, and the direct discarding not only pollutes the environment, but also causes waste.
In addition, in the treatment of highly suspended matter mine water, a flocculating agent (such as PAM) needs to be uniformly dissolved and added into the mine water, so that a flocculation reaction occurs. However, the flocculating agent is easy to damp and agglomerate during storage and adding, and the direct throwing method mainly adopted in the current practice is still used for feeding, so that the agglomeration phenomenon is easy to occur, the incomplete dissolution is caused, and the blockage of a dosing system pipeline and a dosing pump is easy to cause. On the other hand, since actual production and treatment are often not performed continuously, the flocculant is added in corresponding portions, which easily causes problems of unstable concentration of the flocculation liquid between different addition portions and difficulty in control. The water solubility of some flocculants is greatly influenced by temperature, especially under the condition of low temperature in winter in the north, the dissolution is not complete, the dissolution time is obviously prolonged, and the arrangement of production and treatment are not facilitated.
Disclosure of Invention
The invention provides a method and a system for removing suspended matters and recycling coal slime from mine water to make up for the defects of the prior art, so that the suspended matters in the mine water with high suspended matters are efficiently removed underground, the coal slime in sludge is recycled, the treatment cost of the mine water can be effectively reduced, and the treatment and utilization of the mine water are promoted.
In order to achieve the purpose, the invention adopts the following technical scheme: a system for removing suspended matters and recycling coal slime from mine water comprises:
the raw water pool is used for receiving mine water from underground;
the cyclone separator is used for receiving mine water from a raw water pool and performing cyclone separation on the mine water to obtain underflow with high suspended matter content and clear liquid with low suspended matter content;
the high-density sedimentation tank is communicated with a clear liquid outlet of the cyclone separator and comprises a primary mixing chamber, a secondary mixing chamber and a sedimentation area, wherein the primary mixing chamber is used for feeding a first flocculating agent to destabilize fine suspended particles in the clear liquid, the secondary mixing chamber is used for feeding a second flocculating agent to enable the clear liquid to generate floccules, and the sedimentation area is used for settling sludge and obtaining clear water;
the sludge tank is respectively communicated with the underflow outlet of the cyclone separator and the sludge outlet of the high-density sedimentation tank and is used for temporarily storing sludge;
the first filtering unit is communicated with an outlet of the clean water in the high-density sedimentation tank and is used for filtering the clean water;
the flotation unit is communicated with an outlet of the sludge in the sludge tank and is used for treating the sludge to obtain flotation solution and tailings;
and the second filtering unit is communicated with an outlet of the flotation liquid in the flotation unit and is used for filtering the flotation liquid to obtain coal slime.
According to the system provided by the invention, the high-density sedimentation tank further comprises a coagulation seed adding chamber which is positioned between the primary mixing chamber and the secondary mixing chamber, and a certain amount of coagulation seeds, such as micro-sand, with the diameter of preferably 100-150 μm, are added into the coagulation seed adding chamber so as to increase the self weight of the floccule and accelerate the sedimentation speed of the floccule.
According to the system, the high-density sedimentation tank also comprises a rotary separation sand washer which is respectively communicated with the outlet of the sludge in the high-density sedimentation tank and the inlet of the sludge treatment tank and is used for separating and recovering the micro-sand in the sludge in the high-density sedimentation tank, and the sludge after the micro-sand separation enters the sludge tank for treatment. Preferably, the recovered micro-sand is added again to the coagulation seed addition chamber.
According to the system of the invention, the first filtering unit adopts ceramic membrane filtration, and in a specific embodiment, the first filtering unit can adopt hollow plate-type ceramic membranes with the pore diameter of 0.1-0.3 mu m, water inlet and outlet and a tube-plate type membrane module system. The hollow plate-type ceramic membrane is mainly made of corundum, is formed by sintering at high temperature, and can be used for a long time under the condition of poor water quality of mine water.
According to the system of the invention, preferably, the sludge in the sludge pond is stirred and blown and then conveyed to the flotation unit through a pump; the second filtering unit is preferably a pressure filtering type or vacuum type filtering system, coal slime is obtained after filtering, the water content of the coal slime is 70-80%, and filtrate returns to a sludge pool; preferably, tailings produced by the flotation unit may be discharged into the goaf.
The system also comprises a feeding and dissolving device for feeding a first flocculating agent into the first-stage mixing chamber and a second flocculating agent into the second-stage mixing chamber, wherein the feeding and dissolving device comprises a first-stage feeding tank, a second-stage dissolving tank and a liquid storage tank which are sequentially communicated, the first-stage feeding tank is provided with a feeding hole and a water inlet, a primary stirrer is arranged in the first-stage feeding tank, a secondary stirrer is arranged in the second-stage dissolving tank, and the liquid storage tank is provided with a solution outlet;
preferably, a partition plate is arranged between the primary feeding tank and the secondary dissolving tank, so that liquid can only pass through the lower part of the partition plate; and an overflow weir plate with adjustable height and scale is arranged between the secondary dissolving tank and the liquid storage tank.
According to the system of the invention, preferably, heating elements are arranged inside the primary feeding tank and the secondary dissolving tank, and further, the feeding and dissolving device is also provided with a PLC control unit which is respectively connected with the primary stirrer, the secondary stirrer and the heating elements, so that stirring and heating can be controlled according to requirements.
According to the system of the invention, preferably, different angles can be set between the blades of the primary stirrer or the secondary stirrer, or the blades can be designed in layers from top to bottom, such as 1-2 layers, each layer is designed with independent number, such as 2-3 blades per layer; furthermore, holes can be formed in the blades or concave-convex corrugations can be arranged on the blades, so that the disturbance of the liquid during stirring is increased.
The invention also provides a method for removing suspended matters and recycling coal slime from mine water, which comprises the following steps:
1) collecting mine water to a raw water pool underground;
2) conveying mine water in a raw water pool to a cyclone separator, and performing cyclone separation on the mine water to obtain underflow with high suspended matter content and clear liquid with low suspended matter content; and sending the underflow with higher content of suspended matters into a sludge tank, and sending the clear liquid with lower content of suspended matters into a high-efficiency high-density sedimentation tank;
3) enabling the clear liquid to flow into a first-stage mixing chamber of the high-density sedimentation tank, and treating the clear liquid by using a first flocculating agent to destabilize fine suspended particles in the clear liquid;
4) the liquid treated by the first-stage mixing chamber flows into the second-stage mixing chamber again, and dispersed particles suspended in the liquid are treated by a second flocculating agent to generate floccules under the interaction of molecular force;
5) the liquid treated by the secondary mixing chamber flows into a settling zone, sludge is settled in the settling zone to obtain clear water, the clear water is conveyed to a first filtering unit for filtering, and the sludge is conveyed to a sludge tank;
6) stirring and blast stirring sludge in the sludge tank, conveying the sludge to a flotation unit, and adding an emulsifier, a foaming agent and a capturing agent to obtain flotation solution and tailings;
7) and the flotation solution enters a second filtering unit for filtering to obtain coal slime and filtrate, and the filtrate is returned to the sludge tank.
The method according to the invention further comprises: the liquid treated by the first-stage mixing chamber flows into the coagulation seed adding chamber, the self weight of the flocculating constituent is increased, the sedimentation speed of the flocculating constituent is accelerated, and the liquid treated by the coagulation seed adding chamber flows into the second-stage mixing chamber.
The method according to the invention further comprises: and conveying the sludge obtained in the settling zone to a rotary separation sand washer, separating and recovering the micro sand in the sludge in the high-density settling tank, and feeding the sludge after micro sand separation into a sludge tank. Preferably, the recovered micro-sand is added again to the coagulation seed addition chamber.
According to the method, the first flocculating agent is PAC, and the PAC destabilizes fine suspended particles in mine water through the mechanism actions of double electric layer compression, adsorption charge neutralization, adsorption bridging, sediment net capture and the like.
According to the method, the second flocculating agent is PAM, and suspended dispersed particles generate floccules under the interaction of molecular force after flocculation treatment.
According to the method, in the step 2), the content of suspended matters (coal powder and rock powder) in the mine water is 200-2000mg/mL, the content of suspended matters in the obtained underflow is 1-2% by mass percentage, and the content of suspended matters in the obtained clear liquid is 0.1-0.3%.
According to the method, the clear water obtained in the settling zone still contains a small amount of fine particles and floccules alum flocs, and the content of suspended matters is lower than 50mg/mL, so that the clear water is conveyed to the first filtering unit for filtering, the fine solid particles, suspended matters, colloids, partial COD and the like in the water can be removed after treatment, and the turbidity of the effluent is less than or equal to 1 NTU.
According to the method of the present invention, when liquid or sludge is transported, pumping or gravity transportation can be selected through a pipeline as required, which is a conventional technology in the field and is not described in detail.
Compared with the prior art, the invention has the following advantages:
1. the invention develops a new process, realizes the underground efficient removal of suspended matters from the mine water with high suspended matters, simultaneously recovers the coal slime in the sludge, can effectively reduce the treatment cost of the mine water, and promotes the treatment and utilization of the mine water.
2. All treatment equipment of the invention adopts modularized movable equipment, can be installed in an underground roadway of a coal mine, realizes in-situ treatment of mine water without going out of a well, and greatly saves energy consumption and treatment cost.
3. According to the invention, the first flocculating agent and the second flocculating agent can be added by arranging a specific flocculating agent feeding and dissolving device, the flocculating agent feeding and dissolving device comprises working areas such as a primary feeding tank, a secondary dissolving tank and a liquid storage tank, and different working purposes of different working areas can be realized through the design of the partition plate, the number of different blades in different working areas and the structure of the blades; in addition, an overflow weir plate with adjustable height and scale is arranged between the secondary dissolving tank and the liquid storage tank, which is helpful for realizing stable and quantitative flocculant solution supply; in addition, the PLC control unit is connected with the stirrer and the heating element, so that stirring and heating can be controlled as required. The device can effectively realize the rapid and sufficient dissolution of the flocculant and can realize the on-demand and quantitative supply of the flocculant solution.
Drawings
FIG. 1 is a schematic flow chart of an exemplary method for removing suspended matter and recovering coal slurry from mine water according to the present invention.
Fig. 2 is a schematic structural view of a high-density settling tank according to an example of the present invention.
FIG. 3 is a schematic diagram of an exemplary flocculant feed dissolution device of the present invention.
The reference numbers are as follows:
100-a raw water tank, 200-a cyclone separator, 300-a high-density sedimentation tank, 400-a sludge tank, 500-a first filtering unit, 600-a flotation unit and 700-a second filtering unit;
31-a first-stage mixing chamber, 32-a second-stage mixing chamber, 33-a settling zone, 34-a coagulation seed adding chamber, 35-a rotary separation sand washer and 36-a reflux pump;
301-first-stage feeding tank; 302-a secondary dissolving tank; 303-a liquid storage tank; 304-a separator; 305-a feed inlet; 306-a water inlet; 307-primary stirrer; 308-a secondary stirrer; 309-primary stirrer blades; 310-secondary agitator blades; 311-holes; 312-an overflow weir plate; 313-a heating element; 314-a PLC control unit; 315-solution outlet; 316-foot.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings, but the present invention is not limited to the examples listed, and shall include equivalent modifications and variations of the technical solutions defined in the claims appended to the present application.
In the description of the present invention, the terms "first" and "second" are used for convenience of description and distinction only, and are not intended to limit the number or order. Each device or element used in the system of the present invention may employ corresponding devices or elements that are conventional in the art, unless otherwise specified.
As shown in fig. 1, an embodiment of the present invention provides a system for removing suspended matter and recovering coal slurry from mine water, including:
a raw water pool 100 for receiving mine water from a well;
the cyclone separator 200 is used for receiving mine water from the raw water pool 100 and performing cyclone separation on the mine water to obtain underflow with high suspended matter content and clear liquid with low suspended matter content;
the high-density sedimentation tank 300 is communicated with a clear liquid outlet of the cyclone separator 200 and comprises a primary mixing chamber, a secondary mixing chamber and a sedimentation area, wherein the primary mixing chamber is used for feeding a first flocculating agent to destabilize fine suspended particles in clear liquid, the secondary mixing chamber is used for feeding a second flocculating agent to enable clear liquid to generate floccules, and the sedimentation area is used for settling sludge and obtaining clear water;
the sludge tank 400 is respectively communicated with the underflow outlet of the cyclone separator 200 and the sludge outlet of the high-density sedimentation tank 300 and is used for treating sludge;
a first filtering unit 500, which is communicated with the outlet of the clean water in the high-density sedimentation tank 300, and is used for filtering the clean water;
the flotation unit 600 is communicated with an outlet of the sludge in the sludge tank 400 and is used for treating the sludge to obtain flotation liquid and tailings;
and the second filtering unit 700 is communicated with an outlet of the flotation liquid in the flotation unit 600 and is used for filtering the flotation liquid to obtain coal slurry.
In the system of the present invention, the cyclone separator 200 may be a turbulent mixer in a specific embodiment, and the mine water is lifted to the turbulent mixer by a slurry pump for cyclone separation.
In the system of the present invention, a high density sedimentation tank as shown in fig. 2 can be adopted, which comprises a primary mixing chamber 31, a secondary mixing chamber 32, a sedimentation zone 33 through which mine water clear liquid flows in sequence, and a coagulation seed adding chamber 34 arranged between the primary mixing chamber 31 and the secondary mixing chamber 32.
Wherein, a first flocculating agent, such as PAC, is added into the primary mixing chamber 31, and the PAC destabilizes fine suspended particles in mine water through the mechanism actions of double electric layer compression, electric adsorption neutralization, adsorption bridging, sediment net capture and the like to form small flocs; a second flocculating agent, such as PAM, is added into the secondary mixing chamber 32, so that suspended dispersed particles generate floccules under the interaction of molecular force, or the entering small floccules are promoted to form larger floccules through adsorption, electrical neutralization and mutual bridging; in addition, a certain amount of coagulation seeds such as micro sand with the diameter of 100-150 μm is thrown into the coagulation seed feeding chamber to increase the self weight of the floccule and accelerate the sedimentation speed of the floccule. The liquid flow after the full reaction in the second-stage mixing chamber 32 enters the bottom of the settling zone 33 to flow upwards, the settling area of the flocculating particles is increased by the high-density inclined plate, and the particles and flocculating constituents settle on the surface of the inclined plate and slide downwards under the action of gravity, so that rapid settling separation is realized; meanwhile, the micro-sand also slides downwards along the surface of the inclined plate, the floccule is accumulated and compacted at the bottom of the settling zone 33 under the action of the micro-sand, and when the solid is accumulated to a certain height, the sludge is discharged. The clear water after the precipitation is collected and discharged by water collecting tanks distributed at the top of the precipitation tank.
Further, the discharged sludge contains a large amount of fine sand, in order to improve the utilization rate of the sand, the return pump 36 is adopted to convey the fine sand and the sludge to the cyclone sand washer 35, the fine sand is crushed and separated from the floccule under the action of the high-speed cyclone field, the high-strength shearing action and the high-turbulence field of the cyclone sand washer 35, the fine sand flows out from the lower layer and returns to the coagulation seed adding chamber 34 for reuse, and the sludge overflows from the upper layer and flows to the sludge tank through gravity flow for treatment.
In the system of the present invention, the first filtering unit 500 employs ceramic membrane filtration, and in a specific embodiment, the first filtering unit 500 may employ hollow plate-type ceramic membrane with a pore size of 0.1-0.3 μm, water inlet and outlet, and tube-plate type membrane module system. For example, pore diameters of 0.2 μm; the hollow plate-type ceramic membrane is mainly made of corundum, is formed by sintering at high temperature, and can be used for a long time under the condition of poor water quality of mine water.
In the system of the present invention, further, the sludge in the sludge tank 400 is stirred by stirring and blowing, and then is pumped to the flotation unit 600, and the flotation unit 600 is added with an emulsifier, a foaming agent and a search-catching agent to obtain a flotation solution and tailings, respectively, in the same manner as the existing flotation systems, for example, the flotation unit adopts a mechanical stirring type flotation machine and a plate-and-frame filter press; the upper layer of the flotation solution overflows into a second filtering unit 700, which can adopt a pressure filtering type or vacuum type filtering system, and coal slime is obtained after filtering, and the filtrate returns to the sludge tank 400; tailings produced by the flotation unit 600 may be discharged into the goaf.
In the system of the present invention, a feeding and dissolving device for feeding a first flocculant to a first-stage mixing chamber and a second flocculant to a second-stage mixing chamber may also be employed, as shown in fig. 3, the feeding and dissolving device includes a first-stage feeding tank 301, a second-stage dissolving tank 302 and a liquid storage tank 303 which are sequentially communicated, the first-stage feeding tank is provided with a feeding port 305 and a water inlet 306, the first-stage feeding tank is internally provided with a primary stirrer 307 and the second-stage dissolving tank is internally provided with a secondary stirrer 308, and the liquid storage tank 303 is provided with a solution outlet 315;
further, a partition plate 304 is arranged between the primary feeding tank 301 and the secondary dissolving tank 302; an overflow weir plate 312 with adjustable height and scale is arranged between the secondary dissolving tank 302 and the liquid storage tank 303.
Further, heating elements 313 are arranged inside the first-stage feeding tank 301 and the second-stage dissolving tank 302, and the feeding and dissolving device is further provided with a PLC control unit 314 which is respectively connected with the primary stirrer 307, the secondary stirrer 308 and the heating elements 313 so as to realize stirring and heating control according to requirements. The primary agitator 307 is provided with two layers of paddles, two for each layer; the secondary agitator 308 is provided with a layer of blades with openings 311 to enhance the turbulence of the solution flow during agitation and to promote heat transfer and mixing.
In the method, the content of suspended matters (coal powder and rock powder) in the mine water is 200-2000 mg/mL. The clear water obtained in the settling zone 33 still contains a small amount of fine particles and floccules alum flocs, and the content of suspended matters is lower than 50mg/mL, so that the clear water is conveyed to the first filtering unit 500 for filtering, the fine solid particles, suspended matters, colloids, part of COD and the like in the water can be removed after treatment, and the turbidity of the effluent is less than or equal to 1 NTU.
For ease of understanding, the following examples illustrate the method of operation of the system of the present invention during its application in a manufacturing process:
the embodiment of the invention provides a method for removing suspended matters and recycling coal slime from mine water, which comprises the following steps:
1) mine water is collected to the raw water pool 100 underground; wherein the content of suspended substances (including coal powder and rock powder) is 1600 mg/L;
2) conveying mine water in a raw water pool 100 to a cyclone separator 200, and performing cyclone separation on the mine water to obtain bottom flow with the suspended matter content of 3400mg/L and clear liquid with the suspended matter content of 560 mg/L; and sending the underflow with higher content of suspended matters into a sludge tank 400, and sending the clear liquid (top flow) with lower content of suspended matters into a high-efficiency high-density sedimentation tank 300;
3) the clear liquid flows into a first-stage mixing chamber 31 of the high-density sedimentation tank 300 and is treated by a first flocculating agent to destabilize fine suspended particles in the clear liquid;
4) the liquid (the suspended matter content is 120-160 mg/L) treated by the first-stage mixing chamber 31 flows into the second-stage mixing chamber 32 again, and dispersed particles suspended in the liquid are treated by a second flocculating agent to generate floccules under the interaction of molecular force;
5) the liquid treated by the secondary mixing chamber 32 flows into a settling zone, sludge is settled therein and clear water is obtained, the clear water is conveyed to the first filtering unit 500 for filtering, and the sludge is conveyed to the sludge tank 400; wherein, the content of suspended substances in the clear water is 20-40 mg/L, and the turbidity of the filtered water is 0.5-0.8 NTU.
6) Stirring and blast stirring sludge (with the water content of 97-99%) in the sludge pool 400, conveying the sludge to a flotation unit 600, adding an emulsifier, a foaming agent and a search catcher, and obtaining flotation solution (with the content of flotated substances of 0.1-0.3% by mass percentage) and tailings;
7) and the flotation solution enters a second filtering unit 700 for filtering to obtain coal slime (with refined carbon content of 80-90%) and filtrate, and the filtrate is returned to the sludge tank 400.
In the method of the present invention, the method further comprises: the liquid treated by the first-stage mixing chamber 31 flows into the coagulation seed adding chamber 34, the self weight of the flocculating constituent is increased, the sedimentation speed of the flocculating constituent is accelerated, and the liquid treated by the coagulation seed adding chamber 34 flows into the second-stage mixing chamber 32.
In the method of the present invention, further comprising: and conveying the sludge obtained in the settling zone 33 to a rotary separation sand washer 35, separating and recovering the micro sand in the sludge in the high-density settling pond, and feeding the sludge after micro sand separation into a sludge pond. The recovered micro-sand is added into the coagulation seed adding chamber 34 again.
In the method of the present invention, when the liquid or sludge is transported, pumping or gravity transportation can be selected through a pipeline according to needs, which is a conventional technology in the field and is not described in detail.
Compared with the existing mine water treatment system, the process disclosed by the invention has the advantages that the high-turbidity mine water is efficiently pretreated, the turbidity of the treated mine water reaches the standard and is less than 1NTU, the process is less in medicament dosage, short in process flow, small in occupied area, suitable for fluctuating mine water quality, high in treatment efficiency, energy-saving and consumption-reducing compared with the traditional method. The coal slime recovery unit reduces the output of sludge, increases the value of additional products and generally reduces the treatment cost of mine water. And the equipment can be arranged underground, and mine water can be treated on site without lifting the well, so that the treatment cost is further reduced.
All the devices or elements related in the system of the present invention may adopt processing facilities, devices or elements with corresponding functions existing in the art, and thus, detailed description thereof is omitted. Those skilled in the art will understand or know what is not described herein, and will not be described in detail.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or modifications of the technical solution of the present invention are within the spirit of the present invention.
Claims (10)
1. The utility model provides a system for mine water gets rid of suspended solid and retrieves coal slime which characterized in that: the method comprises the following steps:
the raw water pool is used for receiving mine water from underground;
the cyclone separator is used for receiving mine water from a raw water pool and performing cyclone separation on the mine water to obtain underflow and clear liquid;
the high-density sedimentation tank is communicated with a clear liquid outlet of the cyclone separator and comprises a primary mixing chamber, a secondary mixing chamber and a sedimentation area, wherein the primary mixing chamber is used for feeding a first flocculating agent to destabilize fine suspended particles in the clear liquid, the secondary mixing chamber is used for feeding a second flocculating agent to enable the clear liquid to generate floccules, and the sedimentation area is used for settling sludge and obtaining clear water;
the sludge tank is respectively communicated with the underflow outlet of the cyclone separator and the sludge outlet of the high-density sedimentation tank and is used for temporarily storing sludge;
the first filtering unit is communicated with an outlet of the clean water in the high-density sedimentation tank and is used for filtering the clean water;
the flotation unit is communicated with an outlet of the sludge in the sludge tank and is used for treating the sludge to obtain flotation solution and tailings;
and the second filtering unit is communicated with an outlet of the flotation liquid in the flotation unit and is used for filtering the flotation liquid to obtain coal slime.
2. The system for removing suspended matter and recovering coal slime according to claim 1, wherein: the high-density sedimentation tank also comprises a coagulation seed adding chamber which is positioned between the primary mixing chamber and the secondary mixing chamber; and/or the high-density sedimentation tank further comprises a rotary separation sand washer which is respectively communicated with an outlet of the sludge in the high-density sedimentation tank and an inlet of the sludge treatment tank and is used for separating and recovering the micro-sand in the sludge in the high-density sedimentation tank, and the sludge after the micro-sand separation enters the sludge tank for treatment.
3. The system for removing suspended matter and recovering coal slurry as claimed in claim 1 or 2, wherein: the first filtering unit adopts a ceramic membrane for filtering, preferably, the first filtering unit adopts a hollow plate-type ceramic membrane with the aperture of 0.1-0.3 mu m, water enters and exits and a tube-plate type membrane module system.
4. The system for removing suspended matter and recovering coal slime according to claim 1, wherein: stirring and blast stirring sludge in the sludge tank, and conveying the sludge to a flotation unit through a pump; the second filtering unit is preferably a pressure filtering type or vacuum type filtering system, coal slime is obtained after filtering, and filtrate returns to a sludge pool; preferably, the tailings produced by the flotation unit are discharged into the goaf.
5. The system for removing suspended matter and recovering coal slime according to any one of claims 1 to 4, wherein: still including being used for throwing in first flocculating agent to the one-level mixing chamber and throwing in the reinforced dissolving device of second flocculating agent to the second grade mixing chamber, its one-level feeding tank, second grade dissolving tank and the liquid reserve tank that communicates in proper order, one upgrades the feeding tank and is provided with feed inlet and water inlet, inside being provided with secondary agitator of primary agitator and second grade dissolving tank that is provided with of one-level feeding tank, the liquid reserve tank is provided with the solution outlet.
6. The system for removing suspended matter and recovering coal slime according to claim 5, wherein: a partition plate is arranged between the primary feeding tank and the secondary dissolving tank, so that liquid passes through the lower part of the partition plate; an overflow weir plate with adjustable height and scale is arranged between the secondary dissolving tank and the liquid storage tank; and/or heating elements are arranged in the primary feeding tank and the secondary dissolving tank, and further, the feeding and dissolving device is also provided with a PLC control unit which is respectively connected with the primary stirrer, the secondary stirrer and the heating elements.
7. A method for treating mine water to remove suspended matter and recover coal slurry by using the system of any one of claims 1 to 6, characterized in that: the method comprises the following steps:
1) collecting mine water to a raw water pool underground;
2) conveying mine water in a raw water pool to a cyclone separator, and performing cyclone separation on the mine water to obtain bottom flow and clear liquid; sending the bottom flow into a sludge tank, and sending the clear liquid into a high-efficiency high-density sedimentation tank;
3) enabling the clear liquid to flow into a first-stage mixing chamber of the high-density sedimentation tank, and treating the clear liquid by using a first flocculating agent to destabilize fine suspended particles in the clear liquid;
4) the liquid treated by the first-stage mixing chamber flows into the second-stage mixing chamber again, and dispersed particles suspended in the liquid are treated by a second flocculating agent to generate floccules under the interaction of molecular force;
5) the liquid treated by the secondary mixing chamber flows into a settling zone, sludge is settled in the settling zone to obtain clear water, the clear water is conveyed to a first filtering unit for filtering, and the sludge is conveyed to a sludge tank;
6) stirring and blast stirring sludge in the sludge tank, conveying the sludge to a flotation unit, and adding an emulsifier, a foaming agent and a capturing agent to obtain flotation solution and tailings;
7) and the flotation solution enters a second filtering unit for filtering to obtain coal slime and filtrate, and the filtrate is returned to the sludge tank.
8. The method for removing suspended matter and recovering coal slime according to claim 7, wherein: further comprising: the liquid treated by the primary mixing chamber flows into a coagulation seed adding chamber, the self weight of a flocculating body is increased, the sedimentation speed of the flocculating body is accelerated, and the liquid treated by the coagulation seed adding chamber flows into a secondary mixing chamber; and/or, further comprising: conveying the sludge obtained in the settling zone to a rotary separation sand washer, separating and recovering micro sand in the sludge in the high-density settling tank, and allowing the sludge after micro sand separation to enter a sludge tank; preferably, the recovered micro-sand is added again to the coagulation seed addition chamber.
9. The method for removing suspended matter and recovering coal slurry according to claim 7 or 8, wherein: the first flocculating agent is PAC, and the second flocculating agent is PAM.
10. The method for removing suspended matter and recovering coal slime according to claim 7, wherein: in the step 2), the content of suspended substances in the mine water is 200-2000mg/mL, the content of suspended substances in the underflow is 1-2%, and the content of suspended substances in the clear liquid is 0.1-0.3%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115093052A (en) * | 2022-06-28 | 2022-09-23 | 中煤（北京）环保工程有限公司 | Fluorine turbidity co-reduction treatment process for high-fluorine high-turbidity mine water |
| CN115490348A (en) * | 2022-09-16 | 2022-12-20 | 安徽海蓝生物科技有限公司 | Mother liquor recovery process and recovery equipment in L (+) -tartaric acid production process |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810671A (en) * | 2005-01-26 | 2006-08-02 | 孟洪 | Mine water deeply purifying method and apparatus |
| CN102274786A (en) * | 2011-05-18 | 2011-12-14 | 唐山国华科技国际工程有限公司 | Coal slime two-stage flotation process with granularity smaller than 0.5mm |
| CN102491557A (en) * | 2011-12-08 | 2012-06-13 | 中国矿业大学 | Underground mine water treatment method |
| CN202988818U (en) * | 2012-12-24 | 2013-06-12 | 青岛中亚环保工程有限公司 | Efficient micro-sand settling tank |
| CN203916914U (en) * | 2014-06-24 | 2014-11-05 | 中国矿业大学 | A kind of coal slime flotation and floatation clean coal dewatering system |
| CN204380535U (en) * | 2014-12-25 | 2015-06-10 | 四川工程职业技术学院 | A kind of polyacrylamide preparation dissolution system |
| CN106219701A (en) * | 2016-08-25 | 2016-12-14 | 中煤（北京）环保工程有限公司 | A kind of dense medium speed is heavy and sludge filtration water treatment system and processing method |
| CN106865822A (en) * | 2017-03-21 | 2017-06-20 | 西南交通大学 | Integrated purification of mine drainage system |
| CN109179578A (en) * | 2018-09-28 | 2019-01-11 | 三达膜科技（厦门）有限公司 | A kind of processing method of coal mine water and/or coal washing waste water |
| 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 |
| 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 |
-
2020
- 2020-12-25 CN CN202011564595.5A patent/CN112794496A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810671A (en) * | 2005-01-26 | 2006-08-02 | 孟洪 | Mine water deeply purifying method and apparatus |
| CN102274786A (en) * | 2011-05-18 | 2011-12-14 | 唐山国华科技国际工程有限公司 | Coal slime two-stage flotation process with granularity smaller than 0.5mm |
| CN102491557A (en) * | 2011-12-08 | 2012-06-13 | 中国矿业大学 | Underground mine water treatment method |
| CN202988818U (en) * | 2012-12-24 | 2013-06-12 | 青岛中亚环保工程有限公司 | Efficient micro-sand settling tank |
| CN203916914U (en) * | 2014-06-24 | 2014-11-05 | 中国矿业大学 | A kind of coal slime flotation and floatation clean coal dewatering system |
| CN204380535U (en) * | 2014-12-25 | 2015-06-10 | 四川工程职业技术学院 | A kind of polyacrylamide preparation dissolution system |
| CN106219701A (en) * | 2016-08-25 | 2016-12-14 | 中煤（北京）环保工程有限公司 | A kind of dense medium speed is heavy and sludge filtration water treatment system and processing method |
| CN106865822A (en) * | 2017-03-21 | 2017-06-20 | 西南交通大学 | Integrated purification of mine drainage system |
| CN109179578A (en) * | 2018-09-28 | 2019-01-11 | 三达膜科技（厦门）有限公司 | A kind of processing method of coal mine water and/or coal washing waste water |
| 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 |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115093052A (en) * | 2022-06-28 | 2022-09-23 | 中煤（北京）环保工程有限公司 | Fluorine turbidity co-reduction treatment process for high-fluorine high-turbidity mine water |
| CN115093052B (en) * | 2022-06-28 | 2023-11-28 | 中煤（北京）环保工程有限公司 | Fluorine turbidity co-reduction treatment process for high-fluorine high-turbidity mine water |
| CN115490348A (en) * | 2022-09-16 | 2022-12-20 | 安徽海蓝生物科技有限公司 | Mother liquor recovery process and recovery equipment in L (+) -tartaric acid production process |
| CN115490348B (en) * | 2022-09-16 | 2023-10-31 | 安徽海蓝生物科技有限公司 | Mother liquor recovery process and recovery equipment in L (+) -tartaric acid production process |
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Application publication date: 20210514 |