CN104445734B - A kind of remove the method and apparatus of residual Al in mine water - Google Patents
A kind of remove the method and apparatus of residual Al in mine water Download PDFInfo
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- CN104445734B CN104445734B CN201410690157.1A CN201410690157A CN104445734B CN 104445734 B CN104445734 B CN 104445734B CN 201410690157 A CN201410690157 A CN 201410690157A CN 104445734 B CN104445734 B CN 104445734B
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
Abstract
The invention provides and a kind of remove the method for residual Al in mine water, including adding aluminium polychlorid (PAC) and Powdered Activated Carbon in pending mine water, by stir process and staticly settle process, remove the float in mine water, and use the residual Al in active carbon filter absorption mine water.Invention also provides and a kind of remove the device of residual Al in mine water, including coagulation reaction tank, chemicals dosing plant, agitating device, sedimentation tank and and active carbon filter.Mine water after methods and apparatus of the present invention processes, in water outlet, Residual Aluminum Content can be stably maintained at below 0.2mg/L, reaches national drinking water standard regulation.
Description
Technical field
The present invention relates to the processing method of mine water, be specifically related to a kind of employing aluminium polychlorid and Powdered Activated Carbon
Reduce in mine water residual Al and use activated carbon to remove the method for residual Al in mine water, belonging to waste water and process neck
Territory.
Background technology
Coal will discharge substantial amounts of mine water in recovery process.2010, coal in China yield reached 32.4
Hundred million t, Technique of Coal Mine Drainage discharge capacity about 6,100,000,000 m3.According to the polluting property of mine water, mine water is broadly divided into
High suspended matter mine water, highly mineralized mine water (also known as mine bitter), acid mine water and special contamination
The four big classes such as thing mine water.Wherein, high suspended matter mine water proportion is maximum, accounts for about 60-70%.
China's overwhelming majority coal place of production is respectively positioned on extreme dehydration area.Therefore, mine water is effectively treated laggard
Row reuse, is the inevitable choice for the treatment of mine drainage and resource.
For high suspended matter mine water, the most of mine drainage of China belongs to this type.Suspension content height master
If subsoil water affected by exploitation and the coal dust brought into and rock dust.The processing method of this type of mine water is the most all
Use coagulation, precipitate, filter and sterilization process processes, reach to discharge or reuse after purification of mine drainage purpose.
In high suspended matter mine water, SS (float) content is typically at 100-1000mg/L.When shaft sump is brought down stocks,
SS content reaches as high as every liter of milligram up to ten thousand.Further, in mine water, SS grain diameter is the least, averagely only has
2-8 μm, has the SS grain diameter of more than 85% below 50 μm in total suspended matter.For the most tiny
Particulate matter, uses the method for natural subsidence to be very difficult to remove.Additionally, fine particle in water also by granule
The impact of Brownian movement, the interaction between granular boundary makes mine water water quality complicate, not only has suspension
The characteristic of liquid, also has some character of colloid.Therefore, it is necessary to add appropriate mixed in high suspended matter mine water
Solidifying agent, destroys the colloidal stability in mine water, makes fine particle be gathered into bigger floc sedimentation, accelerates sedimentation speed
Degree, improves clean-up effect.Conventional coagulant is aluminium polychlorid (PAC) macromolecule based on aluminium salt
Coagulant.But the use of PAC can cause the residual Al occurring higher concentration in mine water, and aluminum is in human body
Accumulation can to human body produce toxicity, cause the diseases such as senile dementia, osteoporosis, nervous dysfunction send out
Raw.In view of the hazardness of aluminum in water, each state has all formulated aluminum concentration standard in corresponding water environment, and China specifies
Aluminium in Drinking Water concentration < 0.2mg/L.According to document, in 40 cities that China has looked into, there is the city of 32.5%
City's Aluminium in Drinking Water concentration over-standard, the city that the Northeast exceeds standard is up to 76.9%.Due to major part high suspended matter
Mine water can be used as drinking water purposes after treatment directly or indirectly.Therefore, remove in high suspended matter mine water
Residual Al is significant to protection health, protection environment.
Summary of the invention
The present invention is directed to problem present in treating mine drainage, it is provided that a kind of remove the side of residual Al in mine water
Method, use aluminium polychlorid (PAC) and Powdered Activated Carbon jointly flocculate removal mine water in float, and
Use the residual Al in activated carbon adsorption mine water, use the inventive method to process mine water, after process can being made
Mine is that the content of middle residual Al significantly reduces, and reaches the drinking water standard of national regulation.
One aspect of the present invention provides a kind of and removes the method for residual Al in mine water, comprises the steps:
Pending mine water is incorporated in coagulation reaction tank；
Aluminium polychlorid and Powdered Activated Carbon are put in the mine water of described coagulation reaction tank；
By the mine water having put into described aluminium polychlorid and Powdered Activated Carbon is stirred, make mine
Float coagulation in water；
By the mine water of float coagulation is staticly settled process, obtain eliminating coagulation float
Clear water；
Utilize active carbon filter to adsorb aluminium polychlorid remaining in described clear water, thus obtain water purification.
Wherein, the dosage of described aluminium polychlorid is 55-100mg/L.
Particularly, the dosage of described aluminium polychlorid is 55-80mg/L.
Especially, the dosage of described aluminium polychlorid is preferably 60mg/L.
Particularly, Al in described aluminium polychlorid2O3Content be 9.6-10.5%, preferably 10%.
Especially, the basicity of described aluminium polychlorid is 58.2-63.8%, preferably 60%.
Particularly, the density of described aluminium polychlorid is 1.166-1.183g/mL, preferably 1.175g/mL.
Aluminium polychlorid is a kind of inorganic polymer coagulant, and its main component is mainly aluminium sesquioxide and i.e. aoxidizes
Aluminum, has the high electric charge polymeric rings chain bodily form, has height charge neutrality and bridging to the colloid in waste water and particulate matter
Effect, the polluter such as hardly degraded organic substance, SS and heavy metal ion in removable waste water.
Wherein, described aluminium polychlorid dosage with the ratio of Powdered Activated Carbon dosage is: 55-100:4-6,
I.e. when the dosage of aluminium polychlorid is 55-100mg/L, the dosage of Powdered Activated Carbon is 4-6mg/L.
Particularly, described aluminium polychlorid dosage with the ratio of Powdered Activated Carbon dosage is: 55-80:4-6.
Especially, described aluminium polychlorid dosage is preferably 60:4-6 with the ratio of Powdered Activated Carbon dosage.
Particularly, described aluminium polychlorid dosage is optimized for further with the ratio of Powdered Activated Carbon dosage
60:5.
Especially, described activated carbon is preferably brown coal base active carbon.
Particularly, the particle diameter of described brown coal base active carbon is 0.2-0.4mm, and surface area is 1000-1200m2/g。
Especially, the component content of described brown coal base active carbon is: ash: 8-12%；Moisture content≤4%.
Particularly, the iodine number of described brown coal base active carbon is 900-1100g/g.
Activated carbon is by bridge joint solid suspended particle, so that float settles rapidly and removed.The present invention
Activated carbon and aluminium polychlorid is used together to reduce the float in mine water, it is possible to decrease adding of aluminium polychlorid
Measure and increase coagulation effect, while increasing removal efficiency, decreasing the Residual Aluminum Content in mine water.
Wherein, described stir process is first to stir 1-5min under the stir speed (S.S.) of 150-250r/min, then
Reduction stir speed (S.S.), to 30-80r/min, stirs 5-20min.
Particularly, described stir process is first to stir 2min under the stir speed (S.S.) of 200r/min, then reduces
Stir speed (S.S.), to 50r/min, stirs 10min.
Under the effect of stirring, additive and mine water are sufficiently mixed uniformly.Because the floccule body preliminarily formed is very
Easily being broken up, so being the most quickly stirred, to guarantee that stablizing of flocculation is carried out, not destroyed
The molecular structure of floccule body；Afterwards, low rate mixing can make the floccule body ultimately formed to precipitate rapidly,
Whole flocculation is made to reach optimal effect.
Wherein, the time staticly settling process described in is 10-30min.
Particularly, the time staticly settling process described in is preferably 20min.
The mine water of float coagulation is staticly settled process, and float is deposited to water due to action of gravity
The end, supernatant is the clear water eliminating float.
Wherein, utilize active carbon filter to adsorb aluminium polychlorid remaining in described clear water, thus obtain water purification.
Particularly, described clear water is introduced active carbon filter, catches crown_interception by the absorption of activated carbon, net
Removing the residual Al in clear water, in the mine water water outlet after process, Residual Aluminum Content can be stably maintained at 0.2mg/L
Hereinafter, national drinking water standard regulation is reached.
Especially, described activated carbon is preferably brown coal base active carbon.
Particularly, the particle diameter of described brown coal base active carbon is 0.2-0.4mm, and aperture is 2-100nm, surface area
For 1000-1200m2/g。
Especially, the component content of described brown coal base active carbon is: ash: 8-12%；Moisture content≤4%.
Particularly, the iodine number of described brown coal base active carbon is 900-1100g/g.
Another aspect of the present invention provides a kind of and removes the device of residual Al in mine water, including:
Coagulation reaction tank, for accepting and preserving the pending mine water from mine；
Chemicals dosing plant, for putting into the mine water of described coagulation reaction tank by aluminium polychlorid and Powdered Activated Carbon
In；
Coagulation agitating device, for stirring the mine water having put into described aluminium polychlorid and Powdered Activated Carbon
Mix process, make the float coagulation in mine water；
Sedimentation tank, for the mine water of float coagulation is staticly settled process, obtains eliminating coagulation
The clear water of float；
Active carbon filter, for adsorbing aluminium polychlorid remaining in described clear water, thus obtains water purification.
Wherein, described chemicals dosing plant includes:
Aluminium polychlorid throwing device, for putting into the mine water of described coagulation reaction tank by aluminium polychlorid
In；
Activated charcoal adding apparatus, in the mine water that Powdered Activated Carbon is put into described coagulation reaction tank.
Wherein, bottom described sedimentation tank, it is additionally provided with mud discharging device, regular for the pollutant mud that will settle down
Discharge.
Wherein, the adsorbing material of described active carbon filter is preferably brown coal base active carbon.
Particularly, the particle diameter of described brown coal base active carbon is 0.2-0.4mm, and aperture is 2-100nm, surface area
For 1000-1200m2/g。
Especially, the component content of described brown coal base active carbon is: ash: 8-12%；Moisture content≤4%.
Particularly, the iodine number of described brown coal base active carbon is 900-1100g/g.
Wherein, in described removal mine water the device of residual Al also include being arranged on above active carbon filter anti-
Cleaning device, for described active carbon filter is periodically carried out backwash process, removes residual contaminants thereon,
Increase the service life of active carbon filter.
Work process and the operation principle of assembly of the invention are as follows:
Pending mine water pumps into coagulation reaction tank, in coagulation reaction tank, adds dress by aluminium polychlorid
Putting, with activated charcoal adding apparatus, mine water carries out coagulation of offeing medicine, mine water is entered by period by coagulation agitating device
Row is fully sufficiently stirred for, and float is carried out coagulation；In coagulation process, due to the addition of powdery charcoal, one
Aspect can reduce the dosage of aluminium polychlorid, on the other hand adds coagulation effect.Mine after coagulation
Water gravity flow flows into sedimentation tank and staticly settles, and mud is through mud discharging device periodically outer row.Through staticly settling process
After clear water pump into active carbon filter and process, in activated carbon reactor, the residual Al in clear water passes through
The synergism such as the absorption of carbon leaching material, filtration, are removed to greatest extent；Active carbon filter passes through
Back washing device carries out routine cleaning to activated carbon reactor, and backwash draining is back to coagulation reaction tank again and is circulated
Process.Finally, flow back to outside water outlet after treatment i.e. water purification or be emitted into external environment.
Advantages of the present invention and Advantageous Effects are as follows:
1, the present invention uses aluminium polychlorid (PAC) and Powdered Activated Carbon jointly to flocculate in removal mine water
Float, and use the residual Al in activated carbon adsorption mine water, use the inventive method to process mine water, can
Making the mine after process is that the content of middle residual Al is removed to greatest extent, and in water outlet, Residual Aluminum Content can stably be tieed up
Hold at below 0.2mg/L, reach the drinking water standard of national regulation.
2, the present invention adds Powdered Activated Carbon, adding of Powdered Activated Carbon while using polyaluminium aluminum flocculation
Enter the dosage so that reducing aluminium polychlorid while reducing suspension content, and then reduce mine water
In Residual Aluminum Content.
3, the present invention uses active carbon filter that the mine water eliminating float is carried out adsorption treatment, is going
Except effectively reducing the content of residual Al in mine water while the float in mine water.
4, the present invention selects brown coal base active carbon to process, and raw material sources are convenient, cheap, it is adaptable to
Large-scale popularization and industrial use.
Accompanying drawing explanation
Fig. 1 is that the present invention removes the structural representation of the device of residual Al in mine water；
Description of reference numerals: 1, coagulation reaction tank；2, aluminium polychlorid throwing device；3, activated carbon adds
Device；4, coagulation agitating device；5, sedimentation tank；6, active carbon filter；7, mud discharging device；8, anti-
Cleaning device.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, the present invention removes the device of residual Al in mine water includes coagulation reaction tank 1, it is polymerized chlorine
Change aluminum throwing device 2, activated charcoal adding apparatus 3, coagulation agitating device 4, sedimentation tank 5 and activated carbon to filter
Device 6.
Coagulation reaction tank 1 is for accepting and preserving the pending mine water from mine；Aluminium polychlorid adds dress
Put 2 in the mine water that aluminium polychlorid is put into described coagulation reaction tank；Activated charcoal adding apparatus 3
In the mine water that Powdered Activated Carbon is put into described coagulation reaction tank；Coagulation agitating device 4 is for throwing
The mine water having entered described aluminium polychlorid and Powdered Activated Carbon is stirred, and makes the float in mine water
Coagulation；Sedimentation tank 5, for the mine water of float coagulation is staticly settled process, obtains eliminating mixed
The clear water of solidifying float；Mud discharging device 7 it is additionally provided with bottom sedimentation tank 5, dirty for the pollutant that will settle down
Mud is periodically discharged；Active carbon filter 6 is for adsorbing aluminium polychlorid remaining in described clear water, thus obtains
Water purification；Back washing device 8 above active carbon filter for periodically carrying out backwash to described active carbon filter
Process, remove residual contaminants thereon, increase the service life of active carbon filter.
Pending mine water pumps into coagulation reaction tank 1, in coagulation reaction tank, is added by aluminium polychlorid
Device 2 and activated charcoal adding apparatus 3 carry out coagulation of offeing medicine to mine water, and period passes through coagulation agitating device 4
Mine water is sufficiently stirred for, float is carried out coagulation；Mine water gravity flow after coagulation flows into sedimentation tank
5 staticly settle, and mud is through the outer row of mud discharging device 7；Clear water after staticly settling process pumps into
Active carbon filter 6 processes, and in activated carbon reactor, the residual Al in clear water passes through carbon leaching material
Absorption, the synergism such as filtration, removed to greatest extent；Active carbon filter passes through back washing device 8
Activated carbon reactor carries out routine cleaning, and backwash draining is back to coagulation reaction tank again and is circulated process.?
Eventually, flow back to outside water outlet after treatment i.e. water purification or be emitted into external environment.
In the embodiment of the present invention, aluminium polychlorid used is purchased from Gongyi, Henan chemical reagent work, wherein Al2O3Content be
10%, basicity is 60%.Density is 1.175g/mL, other Al2O3Content be 9.6-10.5%, salt
Base degree is 58.2-63.8%.Density is that the aluminium polychlorid of 1.166-1.183g/mL is all applicable to the present invention；Powder
End brown coal base active carbon is purchased from Inner Mongol Bao Xile coal industry company limited, and its particle diameter is 0.2-0.4mm, surface area
For 1000-1200m2/ g, ash is 8-12%；Moisture content≤4%, iodine number is 900-1100g/g；Activated carbon filters
The adsorbing material of device is brown coal base active carbon, and purchased from Inner Mongol Bao Xile coal industry company limited, its particle diameter is
0.2-0.4mm, aperture is 2-100nm, and surface area is 1000-1200m2/ g, ash is 8-12%；Moisture content≤
4%, iodine number is 900-1100g/g.
The mine water processed in the embodiment of the present invention is taken from elm man of Shen Dong Coal Industry Group Co. of Shenhua Liang Kuang and is removed ore deposit
In well water, residual Al pilot scale processes engineering, and treating capacity is 12t/d.
Embodiment 1
1, pending mine water is pumped into coagulation reaction tank, treat the liquid level in coagulation reaction tank reach away from
When the 50cm of top, pond, stop water inlet；The size of coagulation reaction tank is: 4000 × 5600 × 4500mm.
2, open aluminium polychlorid throwing device and activated charcoal adding apparatus carries out coagulation of offeing medicine to mine water, its
The dosage of middle aluminium polychlorid is 60mg/L, and the dosage of powder brown coal base active carbon is 5mg/L；Open
Mine water is fully sufficiently stirred for by coagulation agitating device, first stirs under the stir speed (S.S.) of 200r/min
2min, then reduction stir speed (S.S.) is to 50r/min, stirs 10min.
3, the mine water gravity flow after coagulation flows into sedimentation tank and staticly settles, and the time staticly settled is
20min；The size of sedimentation tank is: 4000 × 2000 × 4500mm.
4, the clear water after staticly settling process is pumped into active carbon filter to process, remove in clear water
Residual Al, the size of active carbon filter is: internal diameter 800mm, highly 1600mm, activated carbon floor height
Degree 1000mm, filtrate is the water outlet after process.The treatment effect of mine water is shown in Table 1.
Embodiment 2
1, pending mine water is pumped into coagulation reaction tank, treat the liquid level in coagulation reaction tank reach away from
When the 50cm of top, pond, stop water inlet；The size of coagulation reaction tank is: 4000 × 5600 × 4500mm.
2, open aluminium polychlorid throwing device and activated charcoal adding apparatus carries out coagulation of offeing medicine to mine water, its
The dosage of middle aluminium polychlorid is 70mg/L, and the dosage of powder brown coal base active carbon is 4.5mg/L；Open
Mine water is fully sufficiently stirred for by coagulation agitating device, first stirs under the stir speed (S.S.) of 220r/min
3min, then reduction stir speed (S.S.) is to 65r/min, stirs 8min.
3, the mine water gravity flow after coagulation flows into sedimentation tank and staticly settles, and the time staticly settled is
15min；The size of sedimentation tank is: 4000 × 2000 × 4500mm.
4, the clear water after staticly settling process is pumped into active carbon filter to process, remove in clear water
Residual Al, the size of active carbon filter is: internal diameter 800mm, highly 1600mm, activated carbon floor height
Degree 1000mm, filtrate is the water outlet after process.The treatment effect of mine water is shown in Table 1.
Embodiment 3
1, pending mine water is pumped into coagulation reaction tank, treat the liquid level in coagulation reaction tank reach away from
When the 50cm of top, pond, stop water inlet；The size of coagulation reaction tank is: 4000 × 5600 × 4500mm.
2, open aluminium polychlorid throwing device and activated charcoal adding apparatus carries out coagulation of offeing medicine to mine water, its
The dosage of middle aluminium polychlorid is 80mg/L, and the dosage of powder brown coal base active carbon is 5.5mg/L；Open
Mine water is fully sufficiently stirred for by coagulation agitating device, first stirs under the stir speed (S.S.) of 180r/min
4min, then reduction stir speed (S.S.) is to 40r/min, stirs 15min.
3, the mine water gravity flow after coagulation flows into sedimentation tank and staticly settles, and the time staticly settled is
25min；The size of sedimentation tank is: 4000 × 2000 × 4500mm.
4, the clear water after staticly settling process is pumped into active carbon filter to process, remove in clear water
Residual Al, the size of active carbon filter is: internal diameter 800mm, highly 1600mm, activated carbon floor height
Degree 1000mm, filtrate is the water outlet after process.The treatment effect of mine water is shown in Table 1.
Embodiment 4
1, pending mine water is pumped into coagulation reaction tank, treat the liquid level in coagulation reaction tank reach away from
When the 50cm of top, pond, stop water inlet；The size of coagulation reaction tank is: 4000 × 5600 × 4500mm.
2, open aluminium polychlorid throwing device and activated charcoal adding apparatus carries out coagulation of offeing medicine to mine water, its
The dosage of middle aluminium polychlorid is 55mg/L, and the dosage of powder brown coal base active carbon is 4mg/L；Open
Mine water is fully sufficiently stirred for by coagulation agitating device, first stirs under the stir speed (S.S.) of 150r/min
5min, then reduction stir speed (S.S.) is to 80r/min, stirs 5min.
3, the mine water gravity flow after coagulation flows into sedimentation tank and staticly settles, and the time staticly settled is
10min；The size of sedimentation tank is: 4000 × 2000 × 4500mm.
4, the clear water after staticly settling process is pumped into active carbon filter to process, remove in clear water
Residual Al, the size of active carbon filter is: internal diameter 800mm, highly 1600mm, activated carbon floor height
Degree 1000mm, filtrate is the water outlet after process.The treatment effect of mine water is shown in Table 1.
Embodiment 5
1, pending mine water is pumped into coagulation reaction tank, treat the liquid level in coagulation reaction tank reach away from
When the 50cm of top, pond, stop water inlet；The size of coagulation reaction tank is: 4000 × 5600 × 4500mm.
2, open aluminium polychlorid throwing device and activated charcoal adding apparatus carries out coagulation of offeing medicine to mine water, its
The dosage of middle aluminium polychlorid is 100mg/L, and the dosage of powder brown coal base active carbon is 6mg/L；Open
Mine water is fully sufficiently stirred for by coagulation agitating device, first stirs under the stir speed (S.S.) of 250r/min
1min, then reduction stir speed (S.S.) is to 30r/min, stirs 20min.
3, the mine water gravity flow after coagulation flows into sedimentation tank and staticly settles, and the time staticly settled is
30min；The size of sedimentation tank is: 4000 × 2000 × 4500mm.
4, the clear water after staticly settling process is pumped into active carbon filter to process, remove in clear water
Residual Al, the size of active carbon filter is: internal diameter 800mm, highly 1600mm, activated carbon floor height
Degree 1000mm, filtrate is the water outlet after process.The treatment effect of mine water is shown in Table 1.
Table 1 embodiment 1-5 treatment effect to mine water
As shown in Table 1:
1, in the pending mine water of pilot scale plant, the content of SS is 623.2mg/L, through the inventive method and dress
After putting process, the SS content in water outlet is that 228.1-250.5mg/L, SS clearance is up to 59.8-63.4%；
2, in mine water before treatment, Residual Aluminum Content is 0.65mg/L, after the inventive method and device process,
Residual Aluminum Content in water outlet is 0.12-0.18mg/L, and residual Al clearance is up to 72.3-81.5%；
3, application the inventive method and device process and process mine water, and high treating effect, float is gone
Except efficiency is high, after process, the Residual Aluminum Content in water outlet is stably controlled at below 0.2mg/L, reaches country's drink
Water supply standard specifies.
Reference examples 1
1, pending mine water is pumped into coagulation reaction tank, treat the liquid level in coagulation reaction tank reach away from
When the 50cm of top, pond, stop water inlet；The size of coagulation reaction tank is: 4000 × 5600 × 4500mm.
2, open aluminium polychlorid throwing device and mine water is carried out offer medicine coagulation, the wherein throwing of aluminium polychlorid
Dosage is 60mg/L；Open coagulation agitating device mine water is fully sufficiently stirred for, first at 200r/min
Stir speed (S.S.) under stir 2min, then reduce stir speed (S.S.) to 50r/min, stir 10min.
3, the mine water gravity flow after coagulation flows into sedimentation tank and staticly settles, and the time staticly settled is
20min；The size of sedimentation tank is: 4000 × 2000 × 4500mm, and supernatant is the water outlet after process.
The treatment effect of mine water is shown in Table 2.
Reference examples 2
1, pending mine water is pumped into coagulation reaction tank, treat the liquid level in coagulation reaction tank reach away from
When the 50cm of top, pond, stop water inlet；The size of coagulation reaction tank is: 4000 × 5600 × 4500mm.
2, open aluminium polychlorid throwing device and activated charcoal adding apparatus carries out coagulation of offeing medicine to mine water, its
The dosage of middle aluminium polychlorid is 60mg/L, and the dosage of powder brown coal base active carbon is 5mg/L；Open
Mine water is fully sufficiently stirred for by coagulation agitating device, first stirs under the stir speed (S.S.) of 200r/min
2min, then reduction stir speed (S.S.) is to 50r/min, stirs 10min.
3, the mine water gravity flow after coagulation flows into sedimentation tank and staticly settles, and the time staticly settled is
20min；The size of sedimentation tank is: 4000 × 2000 × 4500mm, and supernatant is the water outlet after process.
The treatment effect of mine water is shown in Table 2.
Reference examples 3
1, pending mine water is pumped into coagulation reaction tank, treat the liquid level in coagulation reaction tank reach away from
When the 50cm of top, pond, stop water inlet；The size of coagulation reaction tank is: 4000 × 5600 × 4500mm.
2, open aluminium polychlorid throwing device and mine water is carried out offer medicine coagulation, the wherein throwing of aluminium polychlorid
Dosage is 60mg/L；Open coagulation agitating device mine water is fully sufficiently stirred for, first at 200r/min
Stir speed (S.S.) under stir 2min, then reduce stir speed (S.S.) to 50r/min, stir 10min.
3, the mine water gravity flow after coagulation flows into sedimentation tank and staticly settles, and the time staticly settled is
20min；The size of sedimentation tank is: 4000 × 2000 × 4500mm.
4, the clear water after staticly settling process is pumped into active carbon filter to process, remove in clear water
Residual Al, the size of active carbon filter is: internal diameter 800mm, highly 1600mm, activated carbon floor height
Degree 1000mm, filtrate is the water outlet after process.The treatment effect of mine water is shown in Table 2.
Table 2 reference examples 1-3 treatment effect to mine water
Reference examples 1 is not added with Powdered Activated Carbon during flocculation reaction, and supernatant after precipitation does not enter
Row activated carbon adsorption processes, and remaining is same as in Example 1；Reference examples 2 supernatant after precipitation is lived
Property charcoal adsorption treatment, remaining is same as in Example 1；Reference examples 3 is not added with powder during flocculation reaction and lives
Property charcoal, remaining is same as in Example 1.
As can be seen from Table 2:
1, from reference examples 3 and the correction data of embodiment 1, under conditions of raw water quality is identical,
Adding Powdered Activated Carbon ratio during flocculation reaction, to be not added with the clearance of Powdered Activated Carbon, SS and residual Al equal
Higher；
2, from reference examples 2 and the correction data of embodiment 1, under conditions of raw water quality is identical, warp
The activated carbon adsorption clearance than the water outlet SS after processing without activated carbon adsorption and residual Al is the highest；
3, from the correction data of reference examples 1,2,3, under conditions of raw water quality is identical, in flocculation
Course of reaction is added Powdered Activated Carbon or uses activated carbon adsorption process to be all conducive to SS and remnants in mine water
The removal of aluminum；
4, from reference examples 1,2,3 and the correction data of embodiment 1, in the condition that raw water quality is identical
Under, during flocculation reaction, add Powdered Activated Carbon use activated carbon adsorption to process, SS and residual Al
Removal effect is best, goes efficiency the highest, and the Residual Aluminum Content in water outlet is stably controlled at below 0.2mg/L,
Reach national drinking water standard regulation.
Although above-mentioned, the present invention is elaborated, but the invention is not restricted to this, the technology people of the art
Member can modify according to the principle of the present invention, therefore, and the various amendments that all principles according to the present invention are carried out
All should be understood to fall into protection scope of the present invention.
Claims (6)
1. remove the method for residual Al in mine water for one kind, it is characterised in that comprise the steps:
Pending mine water is incorporated in coagulation reaction tank；
Aluminium polychlorid and Powdered Activated Carbon are put in the mine water of described coagulation reaction tank；
By the mine water having put into described aluminium polychlorid and Powdered Activated Carbon is stirred, make mine
Float coagulation in water；
By the mine water of float coagulation is staticly settled process, obtain eliminating coagulation float
Clear water；
Utilize active carbon filter to adsorb aluminium polychlorid remaining in described clear water, thus obtain water purification；
Wherein, the dosage of described aluminium polychlorid is 55-100mg/L；
Wherein, described aluminium polychlorid dosage with the ratio of Powdered Activated Carbon dosage is: 55-100:4-6；
By described clear water is flow through described active carbon filter from bottom to top, remove the remnants in described clear water and gather
Close aluminum chloride；
Utilization is arranged on the back washing device above active carbon filter and periodically carries out active carbon filter at backwash
Reason, removes residual contaminants thereon.
The method of residual Al in removal mine water the most according to claim 1, it is characterised in that described polymerization
The dosage of aluminum chloride is 55-80mg/L.
The method of residual Al in removal mine water the most according to claim 1, it is characterised in that described polymerization
Aluminum chloride dosage with the ratio of Powdered Activated Carbon dosage is: 55-80:4-6.
The method of residual Al in removal mine water the most according to claim 1, it is characterised in that described stirring
It is processed as first stirring under the stir speed (S.S.) of 150-250r/min 1-5min, then reduces stir speed (S.S.) extremely
30-80r/min, stirs 5-20min.
The method of residual Al in removal mine water the most according to claim 4, it is characterised in that described stirring
Being processed as first stirring under the stir speed (S.S.) of 200r/min 2min, then reduction stir speed (S.S.) is to 50r/min, stirs
Mix 10min.
The method of residual Al in removal mine water the most according to claim 1, it is characterised in that described standing
The time of precipitation process is 10-30min.
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