CN102616957A - Mine water-inrush treatment multiplex system and treating method thereof - Google Patents
Mine water-inrush treatment multiplex system and treating method thereof Download PDFInfo
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- CN102616957A CN102616957A CN2012100860530A CN201210086053A CN102616957A CN 102616957 A CN102616957 A CN 102616957A CN 2012100860530 A CN2012100860530 A CN 2012100860530A CN 201210086053 A CN201210086053 A CN 201210086053A CN 102616957 A CN102616957 A CN 102616957A
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Abstract
The invention discloses a mine water-inrush treatment multiplex system and a treating method thereof. The adopted technical scheme is that the mine water-inrush multiplex system comprises a pre-precipitation unit, a gob and an aeration oxidizing filtering unit, and mine inrush water is guided to flow through the pre-precipitation unit, the gob and the aeration oxidizing filtering unit sequentially. The system and the treating method have the advantages that the mine inrush water first passes through the pre-precipitation unit to remove a large amount of suspended matter with coal powder and rock waste as the main thing before entering the gob, thereby avoiding the fact that the font end of the gob has siltation and is blocked by the suspended matter and effectively prolonging serve life of the gob. Water from the gob enters the aeration oxidizing filtering unit, substances such as iron and manganese in the mine inrush water can be effectively removed, and outlet water quality can be ensured. The whole mine water-inrush treatment multiplex system is short in flow, less in power equipment and apt to achieve automation. The method is simple and convenient to achieve, low in cost, high in efficiency and good in water quality purification effect.
Description
Technical field
The present invention relates to wastewater treatment and environmental protection technical field, especially relate to a kind of swallet and handle multiplex system and corresponding water treatment method thereof.
Background technology
Swallet is the trade effluent that typically has the colliery characteristics; Because the China's coal-mine great majority are distributed in the north and arid and semi-arid lands, west; Therefore water resources shortage handles the back as the Coal Production water with swallet, can alleviate the situation of mining area short water supply.Over nearly 30 years, China handles aspect utilizing at the coal mine water burst and has obtained very big achievement, but way is to be delivered to the down-hole utilization through piping system again after swallet is risen to ground and handles usually.This mode needs bigger place to build water processing establishment on ground, capital cost is high, and the lifting expense of pump and the expense of pipeline laying are also bigger.To the colliery of pit mining, swallet is directly handled the back as water of productive use in the down-hole, can reduce the pipeline investment, saves effluent cost simultaneously.
Day mineral well water purification process technique is generally coagulating sedimentation (or clarification)-filtration-sterilization process, and system complex is not suitable under coal mine, using in the small space.China's patent " coal mine gob water purification method " (ZL02129397.X) directly gets into the worked-out section with the swallet guiding; This method can only purifying treatment contain the very low pit water of suspended substance; The general requirement suspension content is less than 200mg/L, even lower.To adopt be that suspension content in the master's coal mine water burst is generally every liter of hundreds of extremely thousands of mg and China is to combine; Containing a large amount of in such swallet is master's suspended substance with ickings, rock dust; If directly guiding gets into the worked-out section, be very easy to that front end settles down in the worked-out section, cause alluvial and obstruction; Because the worked-out section after silting up can't be dredged, thereby shortens the working life in whole worked-out section greatly; Some space, worked-out section is huge; Charges rock, spoil, residual coal composition uniqueness; Swallet gets into will to go through behind the worked-out section and just flowed out the worked-out section to time several months in tens days, during complex physico-chemical takes place, make and contain excessive iron, manganese in the water outlet; Bring very big harm to process water, further could utilize behind iron, the manganese.
Summary of the invention
The objective of the invention is to overcome the shortcoming that exists in the prior art; A kind of technical process is short, need not to add water treatment agent, long service life swallet processing multiplex system and treatment process thereof are provided; This kind system can effectively handle suspended substance in the swallet, colloidalmaterial, iron, manganese etc.; Guarantee effluent quality; The technical scheme that adopts is: a kind of swallet is handled multiplex system, it is characterized in that: said swallet is handled multiplex system and is comprised pre precipitation unit, worked-out section and aeration oxidation filtering unit, and swallet is through guiding flow through successively said pre precipitation unit, worked-out section and aeration oxidation filtering unit.
Technical characterictic of the present invention also has: said swallet is handled multiplex system and is also comprised clean water basin, frequency-conversion water supply system and the down-hole pipe network district that is connected successively; Said clean water basin are connected after the said aeration oxidation filtering unit, from pipe network district, said down-hole, draw water of productive use.
Technical characterictic of the present invention also has: said swallet is handled multiplex system and is also comprised filter tank, clean water basin, frequency-conversion water supply system and the pipe network that is connected successively, and the swallet after the said aeration oxide treatment cell processing promotes the back through lift pump and flows in the said clean water basin.
Technical characterictic of the present invention also has: the unitary bottom of said pre precipitation is equipped with the light rail that is used for heavy mud mine car motion.
Technical characterictic of the present invention also has: it is natural manganese sand or silica sand that said aeration oxidation filtering unit filters filtrate.
Technical characterictic of the present invention also has: a kind of swallet treatment process that is used for the described swallet processing of claim 2 multiplex system, and said swallet treatment process may further comprise the steps:
1) swallet enters into the pre precipitation unit through guiding, after said pre precipitation unit stopped 4-24 hour, draws, and to remove bigger suspended substance in the water, the suspended substance that makes the drawing-off water from the pre precipitation unit is less than＜200mg/L;
2) pre precipitation unit drawing-off water enters into the worked-out section, and water is precipitated, filters and adsorbs, and further removes the suspended substance in the water, makes worked-out section drawing-off water delivery turbidity < 20NTU;
3) the worked-out section drawing-off water enters into aeration oxidation filtering unit, in this unit, water is filtered once more, and filtering filtrate is natural manganese sand or silica sand, makes from aeration oxidation filtering unit drawing-off water delivery turbidity < 1NTU, iron＜0.3mg/>L, manganese＜0.1mg/L;
4) water of productive use is drawn by aeration oxidation filtering unit drawing-off water flow through successively clean water basin, frequency-conversion water supply system and down-hole pipe network district from pipe network district, said down-hole.
Technical characterictic of the present invention also has: the particle diameter of natural manganese sand described in the step 3) is 0.6～2.0mm; Quartz sand particle size is 0.5～1.2mm; Filtrate thickness is 800～1200mm; Filtering velocity is 5～7m/h, is suitable for worked-out section water outlet iron-holder and is lower than the water quality that 6.0mg/L, manganese content are lower than 1.5mg/L.
Technical characterictic of the present invention also has: a kind of swallet treatment process that is used for the described swallet processing of claim 3 multiplex system, and said swallet treatment process may further comprise the steps:
1) swallet enters into the pre precipitation unit through guiding, after said pre precipitation unit stopped 4-24 hour, draws, and to remove bigger suspended substance in the water, the suspended substance that makes the drawing-off water from the pre precipitation unit is less than＜200mg/L;
2) pre precipitation unit drawing-off water enters into the worked-out section, and water is precipitated, filters and adsorbs, and further removes the suspended substance in the water, makes worked-out section drawing-off water delivery turbidity < 20NTU;
3) the worked-out section drawing-off water enters into aeration oxidation filtering unit, in this unit, water is filtered once more, and filtering filtrate is natural manganese sand or silica sand, makes from aeration oxidation filtering unit drawing-off water delivery turbidity < 1NTU, iron＜0.3mg/>L, manganese＜0.1mg/L;
4) aeration oxidation filtering unit drawing-off water promotes injection filter tank, back by lift pump earlier, successively through clean water basin, frequency-conversion water supply system and pipe network district, from said pipe network district, draws water of productive use again.
Technical characterictic of the present invention also has: the particle diameter of natural manganese sand described in the step 3) is 0.6～2.0mm; Quartz sand particle size is 0.5～1.2mm; Filtrate thickness is 800～1200mm; Filtering velocity is 5～7m/h, is suitable for worked-out section water outlet iron-holder and is lower than the water quality that 6.0mg/L, manganese content are lower than 1.5mg/L.
Beneficial effect of the present invention is: 1) before swallet gets into the worked-out section, removing most of through the pre precipitation unit earlier is master's suspended substance with coal dust, landwaste, thereby avoids the worked-out section front end by suspended substance alluvial, obstruction, effectively prolongs worked-out section working life;
2) the worked-out section water outlet gets into aeration oxidation filtering unit, can remove materials such as iron in the swallet, manganese effectively, guarantees effluent quality;
3) frequency-conversion water supply system not only can be guaranteed the water yield and the water quality that the down-hole pipe network is required, and saves energy consumption;
4) whole mine water burst multiplex system flow process is brief, power-equipment is few, easily be automated;
5) present method is simple and easy to do, and cost is low, and efficient is high, and effects of purification quality is good.
Description of drawings
Accompanying drawing 1 is the embodiment of the invention one process flow sheet, and accompanying drawing 2 is the embodiment of the invention two process flow sheets.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described.The suspended substance that contains in the swallet mainly comprises coal dust, landwaste and clay etc., and suspension content is usually at 6kg/m
3Below.Pre precipitation unit hydraulic detention time is 4～24h, and mostly pre precipitation unit section is the arched tunnel section that the down-hole is commonly used, and section is the arch of wide 4m * high 3m and wide 5m * wide 4m.The flow velocity of swallet through pre precipitation unit section is less than 0.02m/s; Common particle diameter and bigger coal dust, landwaste and the clay etc. of proportion; In the pre precipitation unit, only receive the effect of this gravity flow resistance in water of particle; Character with free setting can be able to remove effectively in the pre precipitation unit, makes in the water outlet of preliminary sedimentation unit suspension content less than 200mg/L.Be equipped with light rail in the pre precipitation unit bottom, be convenient to the heavy mud of periodic cleaning pre precipitation unit bottom, be transported to ground through mine car, belt and lift technique.
China's coal-mine is main with pit mining; Form the worked-out section behind the seam mining; Most of mine adopts the method for all striding to handle top board, carries out rock (chiltern mud stone, siltstone, packsand, middle sandstone), coal gangue, residual coal, clay and some other mineral grain on the coal seam of different-grain diameter and constitutes the goaf filling thing, and the space is huge; Very grow in space, crack, has bigger water environment capacity.When swallet is flowed through the worked-out section; Flow velocity is very little; Can ignore, because the special tectonic of the weighting material in the worked-out section, suspended substance in the swallet and colloidalmaterial are trapped within the worked-out section under effects such as deposition, filtration, absorption; Thereby swallet is purified, worked-out section delivery turbidity < 20NTU through the worked-out section.When selecting the worked-out section to handle swallet, require the worked-out section that good ground water reservoir and conditions of water storage will be arranged, the seat earth and the rock that underlies thereof constitute good water-resisting layer, prevent that the worked-out section water leak accident from taking place, and does not leak assurance catchment, worked-out section.
Iron in the swallet with+divalent or+3 valency oxidation state exist; Flow through in the process in worked-out section through the swallet after the pre precipitation; Owing to lack dissolved oxygen; Add the physics chemical action of rock in the worked-out section, bastard coal, residual coal etc., make in swallet and the mineral substance+manganese of the deliquescent+divalent iron of manganese reduction becoming of 3 valency iron and+4 valencys and+divalent, make swallet flow out the worked-out section after iron manganese content higher.When the content of iron was high in the water, water had iron taste, was prone to yellow or pale brown look throw out, blocked pipeline, occurred red water sometimes, had a strong impact on the utilization of pit water.Aeration oxidation filtering unit mainly is made up of aeration oxidation pond and filter tank; The aeration oxidation pond relies on the pressurized air in the underworkings of colliery; Logical aeration oxidation pond bottom is laid the boring aeration pond or the aeration head that are equipped with and is carried out aeration; Make
oxidation generation
;
oxidation generates
;
particle that will suspend through the filter tank is again separated from water with
throw out, thereby reaches the purpose of swallet deironing, manganese.Aeration oxidation filtering unit is removed beyond the ferrimanganic in the pit water through oxidation absorption, can also remove residual suspended substance and colloidalmaterial further.Aeration oxidation filtering unit is suitable for worked-out section water outlet iron-holder and is lower than the water that 6.0mg/L, manganese content are lower than 1.5mg/L, delivery turbidity＜1NTU, iron＜0.3mg/L, manganese＜0.1mg/L.Aeration oxidation filtering unit is the pressurized air aeration, and the air demand of every cubic metre of swallet (in L) is generally 2～5 times of former water+divalent iron level (with mg/L).The filter tank filtrate is natural manganese sand or silica sand, and the manganese sand grains directly is 0.6～2.0mm, and quartz sand particle size is 0.5～1.2mm, and filtrate thickness is 800～1200mm, and filtering velocity is 5～7m/h.
Embodiment one: this swallet is handled multiplex system and is comprised pre precipitation unit, worked-out section, aeration oxidation filtering unit, clean water basin, frequency-conversion water supply system and the down-hole pipe network district that is connected successively, from down-hole pipe network district, draws water of productive use.The unitary bottom of pre precipitation is equipped with the light rail that is used for heavy mud mine car motion.It is natural manganese sand or silica sand that aeration oxidation filtering unit filters filtrate.
The method that adopts native system to carry out the swallet processing may further comprise the steps:
1) swallet enters into the pre precipitation unit through guiding, after the pre precipitation unit stopped 4-24 hour, draws, and to remove bigger suspended substance in the water, the suspended substance that makes the drawing-off water from the pre precipitation unit is less than＜200mg/L;
2) pre precipitation unit drawing-off water enters into the worked-out section, and water is precipitated, filters and adsorbs, and further removes the suspended substance in the water, makes worked-out section drawing-off water delivery turbidity < 20NTU;
3) the worked-out section drawing-off water enters into aeration oxidation filtering unit, in this unit, water is filtered once more, and filtering filtrate is natural manganese sand or silica sand, makes from aeration oxidation filtering unit drawing-off water delivery turbidity < 1NTU, iron＜0.3mg/>L, manganese＜0.1mg/L; The natural manganese sand particle diameter is 0.6～2.0mm, and quartz sand particle size is 0.5～1.2mm, and filtrate thickness is 800～1200mm, and filtering velocity is 5～7m/h, is suitable for worked-out section water outlet iron-holder and is lower than the water quality that 6.0mg/L, manganese content are lower than 1.5mg/L.
4) water of productive use is drawn by aeration oxidation filtering unit drawing-off water flow through successively clean water basin, frequency-conversion water supply system and down-hole pipe network district from down-hole pipe network district.
Embodiment two: this swallet is handled multiplex system and is comprised pre precipitation unit, worked-out section, aeration oxidation filtering unit, filter tank, clean water basin, frequency-conversion water supply system and the pipe network that is connected successively, and the swallet after the aeration oxide treatment cell processing promotes the back through lift pump and flows in the clean water basin.The unitary bottom of pre precipitation is equipped with the light rail that is used for heavy mud mine car motion.It is natural manganese sand or silica sand that aeration oxidation filtering unit filters filtrate.
Certain coal mine water burst is stabilized in 350～550m always
3/ h, the multiplexing water yield in down-hole is 200 m to the maximum
3/ h; It is as shown in table 1 to handle multiplex system water-in and water-out water quality, and swallet is from flowing into preliminary sedimentation tank, and preliminary sedimentation tank is the arch gallery of 3 wide 4m, high 3m, long 100m; The bottom, tunnel lays light rail so that clear tunnel bottom settlings device and mine car turnover; Article 3, the tunnel is used other 2 when 1 clear mud, and hydraulic detention time is 6～8h, in water side, preliminary sedimentation tunnel high 2 meters waterwall is set; After swallet is accomplished pre precipitation and is removed particle and the bigger suspended substance of proportion in the preliminary sedimentation tunnel, the overflow entering worked-out section from the waterwall top.
This ore deposit is a pit mining, and it is main having built since the ore deposit with the Coal Mining Equipment Complement technology, forms huge worked-out section, about 1,200,000 m behind the seam mining
3The goaf filling thing is formed with rock, coal gangue, residual coal and the clay mineral of different-grain diameter; After the swallet after the pre precipitation gets into the worked-out section; Precipitate, hold back, adsorb and other physical and chemical process effect under, make that suspended substance and the colloidalmaterial in the swallet is able to remove effectively in the worked-out section.A grade waterwall is set in the tunnel of water side, worked-out section, and worked-out section water outlet (turbidity < 20NTU) gets into aeration oxidation filtering unit from the top overflow of waterwall.
Aeration oxidation filtering unit in the present embodiment comprises aeration oxidation pond, lift pump and filter tank composition.Aeration oxidation pond effective dimensions is 10 * 4.5 * 2.23m, and useful volume is 100m
3, hydraulic detention time is 30min.Boring aeration pipe is arranged in aeration oxidation pond bottom, adopts the compression fan aeration, and the air demand of every cubic metre of swallet is 10L.Filter and adopt pressure type to wash the filter tank each other, physical dimension 10.5 * 2.3 * 2.25m, filtrate are individual layer silica sand, and particle diameter is 0.5～1.2mm, and filtrate thickness is 800 mm, and filtering velocity is 5m.The clean water basin volume is 960m
3, utilize the wide 4m of depleted arched tunnel, high 3m, long 100m, and at two ends the waterwall transformation be set and form.Frequency-conversion water supply system is made up of 2 working shafts and system, and 2 working shaft 1 usefulness 1 are equipped with.
Certain coal mine water burst of table 1 is handled multiplex system water-in and water-out water quality
Certainly, above-mentioned explanation is not a limitation of the present invention, and the present invention also is not limited only to above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also belong to protection scope of the present invention.
Claims (9)
1. a swallet is handled multiplex system; It is characterized in that: said swallet is handled multiplex system and is comprised pre precipitation unit, worked-out section and aeration oxidation filtering unit, and swallet is through guiding flow through successively said pre precipitation unit, worked-out section and aeration oxidation filtering unit.
2. handle multiplex system according to the described swallet of claim 1; It is characterized in that: said swallet is handled multiplex system and is also comprised clean water basin, frequency-conversion water supply system and the down-hole pipe network district that is connected successively; Said clean water basin are connected after the said aeration oxidation filtering unit, from pipe network district, said down-hole, draw water of productive use.
3. handle multiplex system according to the described swallet of claim 1; It is characterized in that: said swallet is handled multiplex system and is also comprised filter tank, clean water basin, frequency-conversion water supply system and the pipe network that is connected successively, and the swallet after the said aeration oxide treatment cell processing promotes the back through lift pump and flows in the said clean water basin.
4. handle multiplex system according to claim 2 or 3 described swallets, it is characterized in that: the unitary bottom of said pre precipitation is equipped with the light rail that is used for heavy mud mine car motion.
5. handle multiplex system according to claim 2 or 3 described swallets, it is characterized in that: it is natural manganese sand or silica sand that said aeration oxidation filtering unit filters filtrate.
6. one kind is used for the swallet treatment process that the described swallet of claim 2 is handled multiplex system, and it is characterized in that: said swallet treatment process may further comprise the steps:
1) swallet enters into the pre precipitation unit through guiding, after said pre precipitation unit stopped 4-24 hour, draws, and to remove bigger suspended substance in the water, the suspended substance that makes the drawing-off water from the pre precipitation unit is less than＜200mg/L;
2) pre precipitation unit drawing-off water enters into the worked-out section, and water is precipitated, filters and adsorbs, and further removes the suspended substance in the water, makes worked-out section drawing-off water delivery turbidity < 20NTU;
3) the worked-out section drawing-off water enters into aeration oxidation filtering unit, in this unit, water is filtered once more, and filtering filtrate is natural manganese sand or silica sand, makes from aeration oxidation filtering unit drawing-off water delivery turbidity < 1NTU, iron＜0.3mg/>L, manganese＜0.1mg/L;
4) water of productive use is drawn by aeration oxidation filtering unit drawing-off water flow through successively clean water basin, frequency-conversion water supply system and down-hole pipe network district from pipe network district, said down-hole.
7. according to the described swallet treatment process of claim 6; It is characterized in that: the particle diameter of natural manganese sand described in the step 3) is 0.6～2.0mm; Quartz sand particle size is 0.5～1.2mm; Filtrate thickness is 800～1200mm, and filtering velocity is 5～7m/h, is suitable for worked-out section water outlet iron-holder and is lower than the water quality that 6.0mg/L, manganese content are lower than 1.5mg/L.
8. one kind is used for the swallet treatment process that the described swallet of claim 3 is handled multiplex system, and it is characterized in that: said swallet treatment process may further comprise the steps:
1) swallet enters into the pre precipitation unit through guiding, after said pre precipitation unit stopped 4-24 hour, draws, and to remove bigger suspended substance in the water, the suspended substance that makes the drawing-off water from the pre precipitation unit is less than＜200mg/L;
2) pre precipitation unit drawing-off water enters into the worked-out section, and water is precipitated, filters and adsorbs, and further removes the suspended substance in the water, makes worked-out section drawing-off water delivery turbidity < 20NTU;
3) the worked-out section drawing-off water enters into aeration oxidation filtering unit, in this unit, water is filtered once more, and filtering filtrate is natural manganese sand or silica sand, makes from aeration oxidation filtering unit drawing-off water delivery turbidity < 1NTU, iron＜0.3mg/>L, manganese＜0.1mg/L;
4) aeration oxidation filtering unit drawing-off water promotes injection filter tank, back by lift pump earlier, successively through clean water basin, frequency-conversion water supply system and pipe network district, from said pipe network district, draws water of productive use again.
9. handle the swallet treatment process of multiplex system according to the described swallet of claim 8; It is characterized in that: the particle diameter of natural manganese sand described in the step 3) is 0.6～2.0mm; Quartz sand particle size is 0.5～1.2mm; Filtrate thickness is 800～1200mm, and filtering velocity is 5～7 m/h, is suitable for worked-out section water outlet iron-holder and is lower than the water quality that 6.0mg/L, manganese content are lower than 1.5mg/L.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103332803A (en) * | 2013-05-31 | 2013-10-02 | 中国矿业大学 | Downhole treatment and reuse device and method for mine water |
| CN104208946A (en) * | 2013-09-05 | 2014-12-17 | 徐州天科机械制造有限公司 | Method and equipment for directly treating water burst on coal mining work face |
| CN105461118A (en) * | 2016-01-13 | 2016-04-06 | 梧州市华鸿污水处理有限公司 | Coal mine sewage treating and recycling technology |
| CN105565542A (en) * | 2015-12-21 | 2016-05-11 | 云南润玖环境工程有限公司 | Mine inflow processing system and application method thereof |
| CN111322111A (en) * | 2020-03-17 | 2020-06-23 | 海南矿业股份有限公司 | Mine gushing cement sand sedimentation structure |
| CN113006870A (en) * | 2021-03-03 | 2021-06-22 | 同煤国电同忻煤矿有限公司 | High-efficient water cyclic utilization reservoir construction of intelligent mine of ten million tons |
| CN113105010A (en) * | 2021-04-23 | 2021-07-13 | 海南矿业股份有限公司 | Method for cleaning sludge in mine sedimentation tank |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332803A (en) * | 2013-05-31 | 2013-10-02 | 中国矿业大学 | Downhole treatment and reuse device and method for mine water |
| CN104208946A (en) * | 2013-09-05 | 2014-12-17 | 徐州天科机械制造有限公司 | Method and equipment for directly treating water burst on coal mining work face |
| CN104208946B (en) * | 2013-09-05 | 2015-09-09 | 徐州天科机械制造有限公司 | The direct processing method of coal-face water burst and equipment |
| CN105565542A (en) * | 2015-12-21 | 2016-05-11 | 云南润玖环境工程有限公司 | Mine inflow processing system and application method thereof |
| CN105461118A (en) * | 2016-01-13 | 2016-04-06 | 梧州市华鸿污水处理有限公司 | Coal mine sewage treating and recycling technology |
| CN111322111A (en) * | 2020-03-17 | 2020-06-23 | 海南矿业股份有限公司 | Mine gushing cement sand sedimentation structure |
| CN113006870A (en) * | 2021-03-03 | 2021-06-22 | 同煤国电同忻煤矿有限公司 | High-efficient water cyclic utilization reservoir construction of intelligent mine of ten million tons |
| CN113105010A (en) * | 2021-04-23 | 2021-07-13 | 海南矿业股份有限公司 | Method for cleaning sludge in mine sedimentation tank |
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Application publication date: 20120801 |