CN1199022A

CN1199022A - Mine water underground clarification system

Info

Publication number: CN1199022A
Application number: CN 97112011
Authority: CN
Inventors: 陈文德; 王柏林
Original assignee: HANDAN DESIGN INST MINISTRY OF COAL INDUSTRY
Current assignee: HANDAN DESIGN INST MINISTRY OF COAL INDUSTRY
Priority date: 1997-05-14
Filing date: 1997-05-14
Publication date: 1998-11-18
Anticipated expiration: 2017-05-14
Also published as: CN1072189C

Abstract

An underground clarifying system for mine water features that the underground water on different mining faces and the water inrushed are collected and then flow through sand depositing pond, dosing pond, mixing pond, reaction pond, inclined tube settling pool, slurry pump and press filter to obtain clarified water, so preventing environmental pollution and utilizing the water effectively. Its advantages are saving labour, low cost, and long service life of water pump and pipeline.

Description

The pit water clarification system

The present invention relates to a kind of pit water clarification system, belong to the mine drainage technical field, be widely used in mine underground clarification pit water, sump cleaning, pit water discharging etc.

Rich coal resources in China, the emission problem of pit water is the focus that people pay close attention to always in coal mining, usually pit water is to utilize pump for sleeping in or submersible pump to extract ground out from wellhole, water pump is often because of there being solid particulate to be damaged in the pit water, increase the maintenance workload of water pump, reduce the work-ing life of water pump.Again owing to contain a large amount of coal dusts, silt particle, foreign material in the pit water, collect in alluvial in the sump, reduced the useful volume and the anti-floods ability of sump, and need cleaning sump in time, this is the work that not only dirty but also tired condition is arduous, and the workman suffers from rheumatism etc. easily.

We had designed Kowloon mouth mine mine water clarification system by the principle of design of horizontal sedimentation tank in 1984, and shaft sinking and drifting is up to 5330m ³, and the coal slime recovery system still is old way, manually with the mine car mud gug of coalingging, pollutes the upper and lower environment of well, it is long to take the auxiliary shaft lifting time, the running cost height.

Purpose of the present invention overcomes above-mentioned weak point exactly, and the present invention has designed a kind of pit water clarification system that comprises settling pit, dosing pond, mixing pit, reaction tank, tube settler, slush pump and pressure filter, comprehensive improvement pit water.

Content of the present invention, the present invention is pooled to settling pit with each getting working face water burst of mine and pit shaft water burst, with the iron bamboo comb with the solid sundries elimination of particle diameter greater than 2mm, in pit water, add flocculation agent through the dosing pond, make pit water in mixing pit with the flocculation agent thorough mixing, utilize the ditch, tunnel to make suspended solid and flocculation agent in the pit water fully carry out ionization reaction again as reaction tank, enter tube settler after forming floss, in tube settler, water separates with suspended substance, the clear water that comes out from tube settler enters the sump storage, discharges the watering pipe network that disappears under ground or the input well then.Suspended substance then falls into the settling tank bottom, utilizes perforated sludge discharge pipe that is located at the tube settler bottom and the slush pump that is located at the slush pump chamber that coal slime suction pressure filter is pressed into briquette, rises to ground through auxiliary shaft.

The medicine of throwing in the pit water is a basic aluminium chloride, and the proportioning of basic aluminium chloride in pit water is 1 liter of 10～15 milligrams of ratio.

Distinguishing feature of the present invention is:

1, the pit water compliance with environmental protection requirements after the clarification, environmentally safe can supply agricultural irrigation and the upper and lower water of productive use of well.

2, sump need not be cleared up, and the workman is freed working from dark, moist, bad, the heavy cleaning sump of ventilation condition.

3, the pit water after the clarification contains slime content less than 5/100000ths, and the solid particulate diameter has satisfied submersible pump to requirements in water quality less than 0.15mm.

4, to produce 1200000 tons in raw coal per year, water yield is 1000m ³The Kowloon mouth mine of/h is an example: pit water after the clarification is for process water, towards spoil etc., can save 1,080,000 yuan of water rates as coal miner spray watering, coal-bed flooding, wet drilling, down-hole fire-fighting watering, coal washery make up water and waste dump every year.Coal slime is fully reclaimed, and 2000 tons of annual recyclable coal slimes are worth 100,000 yuan.Has very big economic benefit.

Description of drawings:

Fig. 1 is pit water clarification system and process flow sheet

Fig. 2 is the tube settler sectional drawing

Fig. 3 is the inclined tube cross-section structure

Fig. 4 is a Kowloon Kou Kuang pit water clarification system synoptic diagram

Further specify the embodiment of the invention below in conjunction with accompanying drawing

With Kowloon Kou Kuang pit water clarification system shown in Figure 4 is embodiment, Kowloon mouth mine well depth 717m, hydraulic pressure 7.3MPa, the normal water yield 1000m of mine ³/ h, maximum flooding quantity 1300m ³/ h, the water of arranging up by D155-33 * 4 types pump for sleeping in from the ditch and the main shaft shaft bottom of mine both wings main haulage roadway, at first enter settling pit, through being located at the iron double-edged fine-toothed comb in settling pit exit, filter out solid particulate and the foreign material of particle diameter greater than 2mm, enter the dosing mixing pit again, reaction tank (crossdrift ditch) carries out dosing, mix, reaction, make the suspended substance in the pit water form floss, enter the tube settler clarification then, the clear water that comes out from tube settler enters sump, be stored in clear water in the sump through water distribution drift, distributing well enters pump sump, drain into the ground tank by the submersible pump that is located in the pump sump from auxiliary shaft, put out a fire and field irrigation usefulness towards spoil for coal washery coal washing and waste dump, or from pump sump suction down-hole fire-fighting watering pipe network, for down-hole fire-fighting watering, the coal miner spray depositing dust, wet drilling is used.The coal slime of tube settler bottom mud accumulation area is squeezed into pressure filter by perforated sludge discharge pipe by slush pump, is pressed into briquette dress mine car through pressure filter and rises to ground through auxiliary shaft, and the clear water that pressure filter extrudes enters sump.The exit of settling pit is provided with twice iron bamboo comb, and particle diameter is tackled in settling pit greater than the solids of 2mm, and by labor cleaning's entrucking, settling pit is made up of two ponds, so that alternately cleaning is used.The particle diameter that contains that is come out by settling pit enters mixing pit less than the pit water of the solid particulate of 2mm, in pit water, add flocculation agent by the dosing pond that is located at the mixing pit ingress, in the dosing pond, earlier basic aluminium chloride is dropped into the dosing dissolving tank and after pressing the moving dissolving of wind, inject dissolving tank with water sprayer again, be provided with floating cup administration device in the dissolving tank, the exit end of this device is provided with the valve that the control soup flows into mixing pit, add what of dose with control, present embodiment adds 10 milliliters basic aluminium chloride proportioning by every liter of pit water, for making the basic aluminium chloride can be with the pit water uniform mixing, in mixing pit and reaction tank, be provided with dividing plate, variation by water (flow) direction reaches uniform mixing, the reaction tank of present embodiment is the long ditch of about 280m in the tunnel, in the ditch, a dividing plate is set every two meters, through about 20 minutes time, solid particulate in the pit water that mixes is fully tied suede, enter the tube settler precipitation then, present embodiment is established a tube settler and No. two tube settlers, and its surface load is 10t/hm ², two ponds are 100m altogether ², two pond length overall 38m per hour handle water yield 1000m ³Tube settler is by catchment area 1, inclined tube district 2, water distributing area 3, cloth pool 4, water distribution wall 8 and slush pump chamber are formed, the top of catchment area is the air intake crossdrift, the inclined tube in inclined tube district adopts the PVC plastic plate to be processed into the regular hexagon honeycomb inclined-tube (Fig. 3) that the length of side is 26mm, the inclined tube that the inclined tube district settles is closely knit, prevent big hole and influence sedimentation effect, pit water enters bottom, inclined tube district by the slit 7 of perforation water distribution wall 8, through inclined tube in the process at upper reaches, mud constantly accumulates in the bottom of inclined tube, just mud collection area is gone in landing after accumulating to a certain degree, stops up inclined tube and should regularly clean inclined tube with high pressure water for preventing coal slime; Mud accumulation area is equipped with perforated sludge discharge pipe 5 and high-pressure water pipe 6 (or pressure ventilation pipe), and the coal slime of mud collection area is squeezed into pressure filter by the slush pump that is installed in the slush pump chamber with the perforated sludge discharge pipe that is installed in mud accumulation area, and pressure filter is selected home-made 60m for use ²Plate and frame(type)filter press, it is filtering solid particles successfully; The fertile graceful pump that slush pump selects for use the water pump works, Shijiazhuang to produce, its wear resisting property is good.The clear water that pressure filter extrudes flows into sump through the ditch, and the briquette that pressure filter extrudes is put into mine car and is transported to ground.The invention solves pit water exhaust emission problem of environment, solved sump cleaning problem, and in conjunction with the practical situation of mine, take into full account and utilized the mine existence conditions, reduced quantities, save great amount of investment, do not need to promote black water more earthward and to the delivered downhole process water, the pit water that drains into ground also can be used as the ground process water, has saved considerable operating charges, and the particle diameter of pit water solid particulate after clarifying is less than 0.15mm, solid contents is less than 5/100000ths in the water, little to water pump and discharge pipe line wearing and tearing, improved the work-ing life of water pump and discharge pipe line greatly, so obtained very big social benefit and economic benefit.

Claims

1, a kind of pit water clarification system, each getting working face water burst of mine and pit shaft water burst are pooled to settling pit, with the iron double-edged fine-toothed comb with the solid sundries elimination of particle diameter greater than 2mm, add people's flocculation agent through the dosing pond, make pit water in mixing pit with the flocculation agent thorough mixing, utilize the ditch, tunnel to make suspended solid and flocculation agent in the pit water fully carry out ionization reaction again as reaction tank, enter tube settler after forming floss, water separates with suspended substance in tube settler, the clear water that comes out from tube settler enters the sump storage, watering pipe network then disappears under discharge or the input well, suspended substance then falls into the settling tank bottom, it is characterized in that: utilize shore pipe and slush pump that coal slime suction pressure filter is pressed into briquette, rise to ground through auxiliary shaft.

2, pit water clarification system as claimed in claim 1 is characterized in that: the medicine of throwing in the pit water is a basic aluminium chloride, and the proportioning of basic aluminium chloride in pit water is 1 liter of 10～15 milligrams of ratio.