CN110510773A - A kind of acid mine water treatment system and method - Google Patents
A kind of acid mine water treatment system and method Download PDFInfo
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- CN110510773A CN110510773A CN201910814164.0A CN201910814164A CN110510773A CN 110510773 A CN110510773 A CN 110510773A CN 201910814164 A CN201910814164 A CN 201910814164A CN 110510773 A CN110510773 A CN 110510773A
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- clarifier
- neutralization reaction
- filtrate
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- lime stone
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
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Abstract
The present invention, which provides one kind, can strengthen de-ferrous effect, reduce occupied area, reduce the acid mine water treatment system and method for operating cost.A kind of acid mine water treatment system, including up-flow neutralization reaction device, neutralization clarifier and sodium hydroxide throwing device, up-flow neutralization reaction device and sodium hydroxide throwing device pass through pipeline respectively and are connected to neutralization clarifier.A kind of acid mine water treatment system process of the invention is simple, and occupied area is small, can shorten the reaction time, reduces basic agent dosage, and convenient operation and management is guaranteeing effectively to save operating cost while stablizing effluent quality；Up-flow neutralization reaction installation area is small, without frequently reloading；It neutralizes clarifier and integrates the multiple functions such as precipitating, filtering, absorption, be not necessarily to mechanical stirring equipment, energy consumption is lower, can strengthen except iron and mud-water separation effect.
Description
Technical field
The present invention relates to a kind of water treatment system and method, in particular to a kind of acid mine water treatment system and method,
Belong to water-treatment technology field.
Background technique
In the recovery process of high-sulfur coal seam, the FeS in coal2A series of materializations, biochemical reaction occur, make mine water in acidity.
If acid mine water is dealt with improperly, outlet can directly destroy surface water environment, be back to production will cause equipment or corrosion of piping,
Fouling.Currently, acid mine water includes neutralisation, contact oxidation filtration method and microbial method except the main method of iron.
Wherein, neutralisation is most widely used, and de-ferrous effect is stablized, but basic agent dosage is big, and sludge output is high, operation
Complex management, processing cost are higher.The construction of contact oxidation filtration technique and operating cost are high, and de-ferrous effect is relatively limited.Micro- life
Object method operating cost is low, without secondary pollution, but stable water outlet is to be improved.
" coal industry pollutant emission standard " (GB20426-2006) requires the water outlet of Newly-built Coal Mine treating mine drainage station total
Iron≤6mg/L.And western China coal mine many places, in areas of serious, receiving water body is limited, Part Coal Mine acidity mine
Water total iron content is high, and total iron concentration of emission need to reach " water environment quality standard " (GB3838-2002) III class and require (mark
Quasi- limit value 0.3mg/L).Treatment effect, exploiting economy reasonable work are improved under the premise of not increasing coal mining enterprise's financial burden
Skill system is the critical issue that acid mine water process field needs to solve.
Therefore, how a kind of acid mine water treatment system and method are provided, to shorten the reaction time, reduces basic agent
Dosage, reducing operating cost is the current technical issues that need to address in this field.
Summary of the invention
The purpose of the present invention is to provide one kind can strengthen de-ferrous effect, reduces occupied area, reduces the acid of operating cost
Property mine water treatment system, solves the problems, such as to propose in background above technology.
Another object of the present invention is to provide a kind of Acid mine water treatment methods, are mitigating the same of operational administrative intensity
Shi Tigao acid mine water treatment effect.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of acid mine water treatment system, including up-flow neutralization reaction device, neutralization clarifier and sodium hydroxide add
Device, up-flow neutralization reaction device and sodium hydroxide throwing device pass through pipeline respectively and are connected to neutralization clarifier；
The up-flow neutralization reaction device includes up-flow neutralization reaction device housing and is successively set on from bottom to top
Supporting layer and filtering conversion zone inside up-flow neutralization reaction device housing, the supporting layer and filtering conversion zone will flow up
Inhalant region, fluidized reaction zone and deceleration Disengagement zone, fluidized reaction zone are divided into inside formula neutralization reaction device housing from bottom to top
Interior to be equipped with lime stone filtrate A, filtering conversion zone includes set on the upper grid plate filtered at the top of conversion zone, is set to filtering conversion zone
The lower grid plate of bottom and the lime stone filtrate B between upper grid plate and lower grid plate, the grain of lime stone filtrate B
Diameter is greater than the aperture of upper grid plate and the aperture of lower grid plate, and the lower grid plate is equipped with solid with lower grid plate
The boring aeration pipe connect；
The neutralization clarifier includes neutralizing clarifier shell, guide shell and adsorption filter layer, and guide shell is arranged in
In the middle part of clarifier housing cavity, adsorption filter layer is surrounded on outside guide shell and affixed neutralization clarifier inner walls,
It is equipped with trapping filtrate and aeration flexible pipe in adsorption filter layer, the guide shell will neutralize during clarifier enclosure interior is divided into
With reaction zone and mud-water separating area, neutralization reaction area is set in guide shell, and mud-water separating area is set to outside guide shell, neutralization reaction area
Equipped with pH on-Line Monitor Device；
The sodium hydroxide throwing device includes explosive box, chemical feed pipe and metering pump, and explosive box is connected to by chemical feed pipe and is neutralized
The neutralization reaction area of clarifier, metering pump are set on chemical feed pipe；
It is successively arranged buffering pond and blower pump for pipeline between the up-flow neutralization reaction device and neutralization clarifier, is delayed
Bath pond and blower pump for pipeline pass through pipeline and are connected to up-flow neutralization reaction device and neutralize clarifier.
Preferably, the up-flow neutralization reaction device further includes water inlet pipe, catch basin A, outlet pipe A and maintenance
Hole, water inlet pipe are set to up-flow neutralization reaction device housing bottom, and water inlet pipe top is equipped with injection well downhole flow regulator, and catch basin A is set to up-flow
Formula neutralization reaction device housing top, catch basin A are set to fluidized reaction zone pair by outlet pipe A connection buffering pond, manhole
The up-flow neutralization reaction device housing outer wall answered.
Preferably, the neutralization clarifier further include droop auto-rotating spray head, catch basin B, outlet pipe B,
Sludge hopper and sludge pipe, droop auto-rotating spray head are set to guide shell bottom, and catch basin B, which is set to, to be neutralized on clarifier shell
Portion is simultaneously connected to outlet pipe B, and sludge hopper, which is set to, to be neutralized clarifier housing bottom and be connected to sludge pipe.
Preferably, the fluidized reaction zone and filtering conversion zone volume ratio be 1:0.2 ~ 0.4, filtering conversion zone with
The volume ratio of deceleration Disengagement zone is 1:1.2 ~ 1.5, and filling rate of the lime stone filtrate A in fluidized reaction zone is 40% ~ 60%, lime
Stone filtrate B is 40% ~ 60% in the filling rate of filtering conversion zone.
Preferably, the lime stone filtrate A partial size is 0.5 ~ 2mm, lime stone filtrate B partial size is 35 ~ 40mm, lower part
Grid panel aperture is 25mm, and upper grid panel aperture is 25mm.
Preferably, being equipped with cobble in the supporting layer, cobble partial size is 20 ~ 30mm.
Preferably, the trapping filtrate is the polyvinyl alcohol cellular elastic sphere of 0.8 ~ 2.5mm of aperture, filtrate is trapped
Filling rate in adsorption filter layer is 55% ~ 65%.
A method of acid mine water processing is carried out using the acid mine water treatment system, comprising the following steps:
(1) up-flow neutralization reaction device is opened, is made inside acid mine water inflow device and from bottom to top followed by water inlet
Area, supporting layer, fluidized reaction zone, filtering conversion zone and deceleration Disengagement zone；The lime stone filtrate A of fluidized reaction zone and filtering reaction
The lime stone filtrate B of layer can carry out neutralization reaction with acid mine water, and the lime stone filtrate B after reaction is less than upper in its partial size
Behind the aperture of portion's flase floor and lower grid plate, filtering conversion zone can be detached from and fluidized；Lime stone filtrate A and lime stone filtrate
B is moved up under the action of ascending current is with carbon dioxide gas stream, and sedimentation is gradually recovered in uphill process, filtering reaction
Layer has crown_interception to lime stone filtrate A；By the control of deceleration Disengagement zone water velocity in 30 ~ 50m/h, filtering supernatant quilt is neutralized
It collects and buffering pond is flowed by pipeline；
(2) sodium hydroxide throwing device and blower pump for pipeline are opened, makes to buffer pond water outlet to enter and neutralizes clarifier, make its with
Chemical feed pipe flows into the sodium hydroxide progress neutralization reaction for neutralizing clarifier, passes through metering pump and pH on-Line Monitor Device controls
PH6.5 ~ 7.5, make mine water enter mud-water separating area by guide shell, and supernatant traps filtrate in water by adsorption filter layer
Mobile trapping absorption suspended matter, is discharged filtered fluid by pipeline under stream and airflow function；
(3) when buffering pond liquid level rises 100 ~ 200mm compared with initial liquid level, stopping up-flow neutralization reaction device is intake and is closed
Blower pump for pipeline and metering pump open the aeration flexible pipe neutralized in clarifier, stop aeration after being persistently aerated 10 ~ 30 minutes,
Staticly settle 10 ~ after twenty minutes, precipitating sludge is discharged and neutralizes clarifier, recovery system operates normally, repeat step (1) and
Step (2)；
(4) when the boring aeration pipe in pH≤4.5 in buffering pond, unlatching up-flow neutralization reaction device is reacted with intensive filtration
The neutralization reaction in area promotes the B surface fouling of lime stone filtrate to fall off；Such as pH≤4.5 in the buffering pond after being aerated, then close
System is closed, is changed after filling out the lime stone filtrate A in up-flow neutralization reaction device and lime stone filtrate B, step (1) and step are repeated
Suddenly (2).
The beneficial effects of the present invention are:
(1) a kind of acid mine water treatment system process of the invention is simple, and occupied area is small, can shorten the reaction time, reduces
Basic agent dosage, convenient operation and management are guaranteeing effectively to save operating cost while stablizing effluent quality；
(2) the up-flow neutralization reaction installation area in a kind of acid mine water treatment system of the invention is small, without frequency
It is numerous to reload；
(3) a variety of function such as neutralization clarifier collection precipitating, filtering, absorption in a kind of acid mine water treatment system of the invention
Energy Yu Yiti, is not necessarily to mechanical stirring equipment, energy consumption is lower, can strengthen except iron and mud-water separation effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is system structure diagram of the invention.
In figure: 1, up-flow neutralization reaction device, 10, up-flow neutralization reaction device housing, 11, inhalant region, 111, into
Water pipe, 112, injection well downhole flow regulator, 12, supporting layer, 121, cobble, 13, fluidized reaction zone, 1311, lime stone filtrate A, 1312, maintenance
Hole, 14, filtering conversion zone, 141, lime stone filtrate B, 142, lower grid plate, 143, upper grid plate, 144, boring aeration
Pipe, 15, deceleration Disengagement zone, 16, catch basin A, 17, outlet pipe A, 18, buffering pond, 19, blower pump for pipeline, 2, neutralization clarification dress
It sets, 20, neutralization clarifier shell, 21, droop auto-rotating spray head, 211, pH on-line monitoring, 22, neutralization reaction area,
221, guide shell, 23, mud-water separating area, 24, adsorption filter layer, 241, trapping filtrate, 242, aeration flexible pipe, 243, lower part blocks
Cut net, 244, top intercept net, 25, catch basin B, 26, outlet pipe B, 27, sludge hopper, 28, sludge pipe, 3, sodium hydroxide adds
Device, 31, explosive box, 32, chemical feed pipe, 33, metering pump.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, technical scheme of the present invention will be further explained in detail.It answers
Work as understanding, implementation of the invention is not limited by the following examples, the accommodation in any form done to the present invention and/or
Change falls within the scope of the present invention.
In the present invention, if not refering in particular to, all parts, percentage are unit of weight, used equipment and raw material etc.
It is commercially available or commonly used in the art.Method in following embodiments is unless otherwise instructed the normal of this field
Rule method.Component or equipment in following embodiments are that universal standard part or those skilled in the art know unless otherwise instructed
The component of dawn, structure and principle are all that this technology personnel can be learnt by technical manual or be obtained by routine experiment method
Know.
Embodiment 1
A kind of acid mine water treatment system as shown in Figure 1, including up-flow neutralization reaction device 1, neutralization 2 and of clarifier
Sodium hydroxide throwing device 3, up-flow neutralization reaction device and sodium hydroxide throwing device pass through respectively pipeline be connected to neutralize it is clear
Clear device.
Up-flow neutralization reaction device includes up-flow neutralization reaction device housing 10 and is successively set on from bottom to top
Supporting layer 12 inside up-flow neutralization reaction device housing and filtering conversion zone 14, supporting layer and filtering conversion zone are by up-flow
Inhalant region 11, fluidized reaction zone 13 and deceleration Disengagement zone 15 are divided into inside neutralization reaction device housing from bottom to top.
Water inlet pipe 111 and injection well downhole flow regulator 112 are equipped in inhalant region, injection well downhole flow regulator is set to water inlet pipe top, for that will pass through water inlet
The acid mine water that pipe flows into is allocated in inhalant region bottom.Cobble 121 is equipped in supporting layer.Lime stone is equipped in fluidized reaction zone
Filtrate A 1311.Filtering conversion zone includes set on the upper grid plate 143 filtered at the top of conversion zone, is set to filtering conversion zone bottom
Lower grid plate 142 and the lime stone filtrate B 141 between upper grid plate and lower grid plate, lime stone filtrate B
Partial size be greater than upper grid plate aperture and lower grid plate aperture, lower grid plate be equipped with lower grid plate it is affixed
Boring aeration pipe 144.
Up-flow neutralization reaction device further includes catch basin A 16, outlet pipe A 17 and manhole 1312.Catch basin A is set to
Up-flow neutralization reaction device housing top, catch basin A pass through outlet pipe A connection buffering pond.Manhole is set to fluidized reaction
The corresponding up-flow neutralization reaction device housing outer wall in area, facilitates maintenance down.
Neutralizing clarifier includes neutralizing clarifier shell 20, droop auto-rotating spray head 21, guide shell 221, inhaling
Attached filter layer 24, catch basin B 25, outlet pipe B 26, sludge hopper 27 and sludge pipe 28.Droop auto-rotating spray head is set to and leads
Flow cartridge bottom, guide shell are arranged in in the middle part of clarifier housing cavity, and adsorption filter layer is surrounded on outside guide shell and solid
It connects and neutralizes clarifier inner walls, be equipped with trapping filtrate 241 and aeration flexible pipe 242 in adsorption filter layer.Guide shell will neutralize
Clarifier enclosure interior is divided into neutralization reaction area 22 and mud-water separating area 23, and neutralization reaction area is set in guide shell, muddy water
Disengagement zone is set to outside guide shell, and neutralization reaction area is equipped with pH on-Line Monitor Device 211.Lower part intercept net is equipped in adsorption filter layer
243 and top intercept net 244, it is used for restricted area range, the two to be angularly disposed and position is opposite.It is clear that catch basin B is set to neutralization
Clear device housing top is simultaneously connected to outlet pipe B, and sludge hopper, which is set to, to be neutralized clarifier housing bottom and be connected to sludge pipe.
Sodium hydroxide throwing device includes explosive box 31, chemical feed pipe 32 and metering pump 33, and explosive box is connected to by chemical feed pipe
The neutralization reaction area of clarifier is neutralized, metering pump is set on chemical feed pipe.Up-flow neutralization reaction device and neutralization clarifier
Between be successively arranged buffering pond 18 and blower pump for pipeline 19, buffering pond is connected in up-flow with blower pump for pipeline by pipeline
With reaction unit and neutralization clarifier, specifically, catch basin A is connected to by outlet pipe A with buffered water pond, and blower pump for pipeline will
Buffering pond is connected to droop auto-rotating spray head.
In the present embodiment, the volume ratio of fluidized reaction zone and filtering conversion zone is 1:0.2, and filtering conversion zone is separated with deceleration
The volume ratio in area is 1:1.2, and filling rate of the lime stone filtrate A in fluidized reaction zone is 40%, and lime stone filtrate B is anti-in filtering
The filling rate for answering layer is 60%.
Lime stone filtrate A partial size is 0.5 ~ 2mm, and lime stone filtrate B partial size is 35 ~ 40mm, and lower grid panel aperture is
25mm, upper grid panel aperture are 25mm.Cobble is equipped in supporting layer, cobble partial size is 20 ~ 30mm.Trapping filtrate is aperture
The polyvinyl alcohol cellular elastic sphere of 0.8 ~ 2.5mm, trapping filling rate of the filtrate in adsorption filter layer is 55%.
A method of acid mine water processing is carried out using above-mentioned acid mine water treatment system, comprising the following steps:
(1) up-flow neutralization reaction device is opened, is made inside acid mine water inflow device and from bottom to top followed by water inlet
Area, supporting layer, fluidized reaction zone, filtering conversion zone and deceleration Disengagement zone；The lime stone filtrate A of fluidized reaction zone and filtering reaction
The lime stone filtrate B of layer can carry out neutralization reaction with acid mine water, and the lime stone filtrate B after reaction is less than upper in its partial size
Behind the aperture of portion's flase floor and lower grid plate, filtering conversion zone can be detached from and fluidized；Lime stone filtrate A and lime stone filtrate
B is moved up under the action of ascending current is with carbon dioxide gas stream, and sedimentation is gradually recovered in uphill process, filtering reaction
Layer has crown_interception to lime stone filtrate A；By the control of deceleration Disengagement zone water velocity in 30 ~ 50m/h, filtering supernatant quilt is neutralized
Catch basin A is collected and entered, then buffering pond is flowed by outlet pipe A；
(2) sodium hydroxide throwing device and blower pump for pipeline are opened, makes to buffer pond water outlet to enter and neutralizes clarifier, make its with
Chemical feed pipe flows into the sodium hydroxide progress neutralization reaction for neutralizing clarifier, passes through metering pump and pH on-Line Monitor Device controls
PH6.89 ~ 7.37, make mine water enter mud-water separating area by guide shell, and supernatant is existed by adsorption filter layer, trapping filtrate
Mobile trapping absorption suspended matter, makes filtered fluid enter outlet pipe B by catch basin B, is arranged by outlet pipe B under water flow and airflow function
System out；
(3) when buffering pond liquid level rises 100 ~ 200mm compared with initial liquid level, stopping up-flow neutralization reaction device is intake and is closed
Blower pump for pipeline and metering pump open the aeration flexible pipe neutralized in clarifier, stop aeration after being persistently aerated 10 ~ 30 minutes,
Staticly settle 10 ~ after twenty minutes, sludge pipe is opened, precipitating sludge is discharged and neutralizes clarifier, recovery system operates normally, weight
Multiple step (1) and step (2)；
(4) when the boring aeration pipe in pH≤4.5 in buffering pond, unlatching up-flow neutralization reaction device is reacted with intensive filtration
The neutralization reaction in area promotes the B surface fouling of lime stone filtrate to fall off；Such as pH≤4.5 in the buffering pond after being aerated, then close
System is closed, is changed after filling out the lime stone filtrate A in up-flow neutralization reaction device and lime stone filtrate B, step (1) and step are repeated
Suddenly (2).
Total hrt be 2.19 it is small in the case of, in try out water be certain coal mine main shaft mine water, using this
The system and method for embodiment, 13 days water monitoring datas of continuous operation are as shown in table 1, lime stone filtrate A, lime stone filtrate
B, the adding of agent cost such as sodium hydroxide is 0.13 yuan/ton of water.
Water monitoring data in table 1 between trial run period
| Water quality indicator | System water inlet | The water outlet of up-flow neutralization reaction device | Neutralize clarifier water outlet |
| pH | 2.97-3.43 | 5.13~5.46 | 6.65~7.31 |
| Total iron/(mgL-1) | 392~434 | 28.5~46.3 | 0.03~0.15 |
Embodiment 2
A kind of acid mine water treatment system as shown in Figure 1, technical solution with embodiment 1, the difference is that: fluidized reaction
The volume ratio of area and filtering conversion zone is 1:0.4, and the volume ratio for filtering conversion zone and deceleration Disengagement zone is 1:1.5, lime stone
Filling rate of the filtrate A in fluidized reaction zone is 60%, and lime stone filtrate B is 40% in the filling rate of filtering conversion zone.
Lime stone filtrate A partial size is 0.5 ~ 2mm, and lime stone filtrate B partial size is 35 ~ 40mm, and lower grid panel aperture is
25mm, upper grid panel aperture are 25mm.Cobble is equipped in supporting layer, cobble partial size is 20 ~ 30mm.Trapping filtrate is aperture
The polyvinyl alcohol cellular elastic sphere of 0.8 ~ 2.5mm, trapping filling rate of the filtrate in adsorption filter layer is 65%.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (8)
1. a kind of acid mine water treatment system, it is characterised in that: the acid mine water treatment system includes in up-flow and anti-
It answers device, neutralize clarifier and sodium hydroxide throwing device, up-flow neutralization reaction device and sodium hydroxide throwing device point
It is not connected to by pipeline and neutralizes clarifier；The up-flow neutralization reaction device includes up-flow neutralization reaction device housing
And it is successively set on supporting layer and filtering conversion zone inside up-flow neutralization reaction device housing from bottom to top, described holds
Support layer and filtering conversion zone will be divided into from bottom to top inside up-flow neutralization reaction device housing inhalant region, fluidized reaction zone and
Deceleration Disengagement zone, lime stone filtrate A is equipped in fluidized reaction zone, and filtering conversion zone includes the top at the top of filtering conversion zone
Flase floor, the lower grid plate set on filtering conversion zone bottom and the lime stone between upper grid plate and lower grid plate
The partial size of filtrate B, lime stone filtrate B are greater than the aperture of upper grid plate and the aperture of lower grid plate, the lower grid
Plate is equipped with the boring aeration pipe affixed with lower grid plate；The neutralization clarifier include neutralize clarifier shell,
Guide shell and adsorption filter layer, guide shell are arranged in in the middle part of clarifier housing cavity, and adsorption filter layer is surrounded on water conservancy diversion
Cylinder outside and affixed neutralization clarifier inner walls, adsorption filter layer is interior to be equipped with trapping filtrate and aeration flexible pipe, and described leads
Flow cartridge will neutralize clarifier enclosure interior and be divided into neutralization reaction area and mud-water separating area, and neutralization reaction area is set to guide shell
Interior, mud-water separating area is set to outside guide shell, and neutralization reaction area is equipped with pH on-Line Monitor Device；The sodium hydroxide throwing device
Including explosive box, chemical feed pipe and metering pump, explosive box is connected to the neutralization reaction area for neutralizing clarifier, metering pump by chemical feed pipe
On chemical feed pipe；Buffering pond and pipeline are successively arranged between the up-flow neutralization reaction device and neutralization clarifier
Booster pump buffers pond and blower pump for pipeline and is connected to up-flow neutralization reaction device by pipeline and neutralizes clarifier.
2. a kind of acid mine water treatment system according to claim 1, it is characterised in that: in the up-flow and anti-
Answering device further includes water inlet pipe, catch basin A, outlet pipe A and manhole, and water inlet pipe is set to up-flow neutralization reaction device housing bottom
Portion, water inlet pipe top are equipped with injection well downhole flow regulator, and catch basin A is set to up-flow neutralization reaction device housing top, and catch basin A passes through water outlet
Pipe A connection buffering pond, manhole are set to the corresponding up-flow neutralization reaction device housing outer wall in fluidized reaction zone.
3. a kind of acid mine water treatment system according to claim 1, it is characterised in that: the neutralization clarifier
It further include droop auto-rotating spray head, catch basin B, outlet pipe B, sludge hopper and sludge pipe, droop auto-rotating spray head is set
In guide shell bottom, catch basin B, which is set to, to be neutralized clarifier upper part of the housing and is connected to outlet pipe B, and sludge hopper, which is set to, neutralizes clarification
Device housing bottom is simultaneously connected to sludge pipe.
4. a kind of acid mine water treatment system according to claim 1, it is characterised in that: the fluidized reaction zone with
The volume ratio for filtering conversion zone is 1:0.2 ~ 0.4, and the volume ratio for filtering conversion zone and deceleration Disengagement zone is 1:1.2 ~ 1.5, lime
Filling rate of the stone filtrate A in fluidized reaction zone be 40% ~ 60%, lime stone filtrate B filtering conversion zone filling rate be 40% ~
60%。
5. a kind of acid mine water treatment system according to claim 1, it is characterised in that: the lime stone filtrate A
Partial size is 0.5 ~ 2mm, and lime stone filtrate B partial size is 35 ~ 40mm, and lower grid panel aperture is 25mm, and upper grid panel aperture is
25mm。
6. a kind of acid mine water treatment system according to claim 1, it is characterised in that: be equipped in the supporting layer
Cobble, cobble partial size are 20 ~ 30mm.
7. a kind of acid mine water treatment system according to claim 1, it is characterised in that: the trapping filtrate is hole
The polyvinyl alcohol cellular elastic sphere of 0.8 ~ 2.5mm of diameter, trapping filling rate of the filtrate in adsorption filter layer is 55% ~ 65%.
8. a kind of side for carrying out acid mine water processing using acid mine water treatment system as claimed in claim 1 to 7
Method, it is characterised in that: this approach includes the following steps,
(1) up-flow neutralization reaction device is opened, is made inside acid mine water inflow device and from bottom to top followed by water inlet
Area, supporting layer, fluidized reaction zone, filtering conversion zone and deceleration Disengagement zone；The lime stone filtrate A of fluidized reaction zone and filtering reaction
The lime stone filtrate B of layer can carry out neutralization reaction with acid mine water, and the lime stone filtrate B after reaction is less than upper in its partial size
Behind the aperture of portion's flase floor and lower grid plate, filtering conversion zone can be detached from and fluidized；Lime stone filtrate A and lime stone filtrate
B is moved up under the action of ascending current is with carbon dioxide gas stream, and sedimentation is gradually recovered in uphill process, filtering reaction
Layer has crown_interception to lime stone filtrate A；By the control of deceleration Disengagement zone water velocity in 30 ~ 50m/h, filtering supernatant quilt is neutralized
It collects and buffering pond is flowed by pipeline；
(2) sodium hydroxide throwing device and blower pump for pipeline are opened, makes to buffer pond water outlet to enter and neutralizes clarifier, make its with
Chemical feed pipe flows into the sodium hydroxide progress neutralization reaction for neutralizing clarifier, passes through metering pump and pH on-Line Monitor Device controls
PH6.5 ~ 7.5, make mine water enter mud-water separating area by guide shell, and supernatant traps filtrate in water by adsorption filter layer
Mobile trapping absorption suspended matter, is discharged filtered fluid by pipeline under stream and airflow function；
(3) when buffering pond liquid level rises 100 ~ 200mm compared with initial liquid level, stopping up-flow neutralization reaction device is intake and is closed
Blower pump for pipeline and metering pump open the aeration flexible pipe neutralized in clarifier, stop aeration after being persistently aerated 10 ~ 30 minutes,
Staticly settle 10 ~ after twenty minutes, precipitating sludge is discharged and neutralizes clarifier, recovery system operates normally, repeat step (1) and
Step (2)；
(4) when the boring aeration pipe in pH≤4.5 in buffering pond, unlatching up-flow neutralization reaction device is reacted with intensive filtration
The neutralization reaction in area promotes the B surface fouling of lime stone filtrate to fall off；Such as pH≤4.5 in the buffering pond after being aerated, then close
System is closed, is changed after filling out the lime stone filtrate A in up-flow neutralization reaction device and lime stone filtrate B, step (1) and step are repeated
Suddenly (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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