CN104086035A - Advanced treatment method for mine water - Google Patents
Advanced treatment method for mine water Download PDFInfo
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- CN104086035A CN104086035A CN201410359439.3A CN201410359439A CN104086035A CN 104086035 A CN104086035 A CN 104086035A CN 201410359439 A CN201410359439 A CN 201410359439A CN 104086035 A CN104086035 A CN 104086035A
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Abstract
The invention discloses an advanced treatment method for mine water. The advanced treatment method for mine water can be used for removing a great deal of coal dust and rock debris through primarily treating and filtering mine water and treating the mine water by using a titanium dioxide photocatalysis device by means of the flocculation and degradation effects of activated carbon loaded titanium dioxide; even more important, due to the arrangement of the photocatalysis device, organisms which are difficult to oxidize can be converted into organisms which are easy to oxidize, so that the basis is laid for subsequent treatment; a metal removal process is adopted, so that metal in the mine water is prevented from being excessive; then, the mine water is subjected to advanced treatment so as to be up to the living use standard, and more complex and resource-consuming steps in the traditional method are omitted in the process. The mine water is treated by using a simple and effective way to achieve a considerable effect.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, be specifically related to a kind of method of advanced treatment pit water.
Background technology
In progress of coal mining, can discharge a large amount of pit waters, not only waste water resource, has also caused severe contamination to environment.Therefore be necessary pit water to process, can reach the standard that life is used, thereby prevent the loss of waste for no reason of water resources, when avoiding water environment pollution, also saved water resources, improved the utilization ratio of water resources.Although there is now more pit water treatment process, the design of mostly be more loaded down with trivial details, cost is higher, has many restrictions for industrial application.
But actual in process of coal mining, pit water is through digging operation repeatedly, and a small amount of greasy dirt that coal dust, landwaste and power operation form has been sneaked in the impact that is subject to human factor, makes the water quality of pit water become complicated various.
Summary of the invention
The invention provides a kind of method of advanced treatment pit water, the method of this advanced treatment pit water is filtered pit water through preliminary treatment, by the processing of optically catalytic TiO 2 device, flocculation and Degradation through absorbent charcoal loading titanium dioxide, can remove a large amount of coal dusts and landwaste, setting that the more important thing is photocatalysis apparatus can also change some dysoxidizable organism into oxidizable organism, for subsequent disposal lays the first stone, again by removing smithcraft, prevent that in pit water, metal is excessive, carry out again advanced treatment, make pit water can reach the standard that life is used, the step of this process more loaded down with trivial details and consumes resources before saving, adopt simple and effective way, pit water is processed, reached considerable effect.
The technical scheme that the present invention adopted is for achieving the above object:
A method for advanced treatment pit water, comprises the following steps:
(1) preliminary treatment: remove the suspended matter in pit water, adopt precipitation, filtration process, in filtration procedure, add optically catalytic TiO 2 device to carry out treatment step, and tentatively adjust pH value, this optically catalytic TiO 2 device adopts the setting of activated carbon supported Nano titanium dioxide, and above this optically catalytic TiO 2 device, be provided with ultraviolet lamp, on this optically catalytic TiO 2 device, be also connected with oxygen increasing pump;
(2) remove smithcraft: adopt the method for chemical oxidation, burning is changed into rear filtration of precipitation and remove;
(3) advanced treatment: first adopt embrane method pre-treatment, then adopt ion-exchange to carry out further purifying treatment, the whole pH value of the step of going forward side by side, reclaims the pit water that reaches drinking water standard, and all the other dense water and mud are collected pending.
Design concept of the present invention is: first remove suspended substance, and pit water is carried out to the adjustment of preliminary pH value, one side rough purification water quality, be that follow-up removal smithcraft is created a good chemical reaction environment on the other hand, and this technology point that to be conventional art do not consider, be exactly to select that activated carbon supported nano titanium oxide is become to photocatalysis apparatus pit water is processed in addition, due to titanium dioxide, to have high reactivity, high stability, nontoxic cost low, and photocatalytic reaction conditions is gentle, good, the not contaminated substrate concentration restriction of selectivity; After carrying out metal removal reaction, then adopt the combination of membrane pre-treatment process and ion exchange method, water quality is further promoted, finally adjust the water quality of pit water to the standard of domestic water, thereby realize whole inventive concept.Clearly this kind of simplicity of design is effective, can be cost-saving, be applicable to industrial application.
Preliminary treatment step adopts preliminary sedimentation equalizing tank-line-blending-primary purification-secondary-cleaned-intermediate pool to carry out the removal of the settlement separate suspended substance of finishing dealing with, and tentatively adjusts pH value to 7.0-8.0 scope.
Remove smithcraft and adopt aeration contact oxidation method, and add suitable catalyzer and accelerate catalytic metal oxidation rate, improve and remove metal efficiency.
Also comprise dense water and sludge treatment step:
Dense water treatment: be directly used in waste dump fire extinguishing; Mud is processed and the export trade in the lump of mine coal slime through dewatering system.
In advanced treatment step, embrane method pre-treatment comprises micro-filtration, ultrafiltration and nanofiltration.Advanced treatment adopts: the method for micro-filtration-ultrafiltration-ion-exchange is carried out.In advanced treatment, further pH value is adjusted to 6.8-7.2 scope.Film pretreatment technology is all excellent than traditional treatment method on treatment effect, the more important thing is owing to only adopting embrane method little to the negative impact of environment.
The present invention compared with prior art has the following advantages and beneficial effect:
The method of this advanced treatment pit water of the present invention is filtered pit water through preliminary treatment, by the processing of optically catalytic TiO 2 device, flocculation and Degradation through absorbent charcoal loading titanium dioxide, can remove a large amount of coal dusts and landwaste, setting that the more important thing is photocatalysis apparatus can also change some dysoxidizable organism into oxidizable organism, for subsequent disposal lays the first stone, again by removing smithcraft, prevent that in pit water, metal is excessive, carry out again advanced treatment, make pit water can reach the standard that life is used, the step of this process more loaded down with trivial details and consumes resources before saving, adopt simple and effective way, pit water is processed, reached considerable effect.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
Preliminary treatment step adopts preliminary sedimentation equalizing tank-line-blending-primary purification-secondary-cleaned-intermediate pool to carry out the removal of the settlement separate suspended substance of finishing dealing with, and tentatively adjust pH value to 7.0-8.0 scope, in primary purification and secondary-cleaned, all add optically catalytic TiO 2 device, this optically catalytic TiO 2 device adopts the setting of activated carbon supported Nano titanium dioxide, and above this catalytic unit, be provided with a plurality of ultraviolet lamps, on this optically catalytic TiO 2 device, be also connected with oxygen increasing pump, general effect is exactly that the fluidised form of photocatalysis apparatus is become to turbulent flow oxygenation reinforcing mass transfer effect.
Embodiment 2
Adopt compressed air oxidation-metal catalyst oxidation catalyst filter technique to remove smithcraft.Now, the metal quality concentration < 0.25mg/L in pit water.This is because the pH value to pit water is adjusted in preliminary treatment process, can be conducive to remove the oxidation chemistry environment of metal, so under good chemical reaction condition, the effect that can access.
Embodiment 3
In advanced treatment step, embrane method pre-treatment comprises micro-filtration, ultrafiltration and nanofiltration.Advanced treatment adopts: the method for micro-filtration-ultrafiltration-ion-exchange is carried out.In advanced treatment, further pH value is adjusted to 6.8-7.2 scope.Film pretreatment technology is all excellent than traditional treatment method on treatment effect, the more important thing is owing to only adopting embrane method little to the negative impact of environment.
Advanced treatment process is mainly desalination, and the combination of membrane processing method and ion exchange method can be played the effect of amplification to desalting ability.
Also comprise dense water and sludge treatment step:
Dense water treatment: be directly used in waste dump fire extinguishing; Mud is processed and the export trade in the lump of mine coal slime through dewatering system.
As above, can fine enforcement the present invention.
Claims (7)
1. a method for advanced treatment pit water, is characterized in that, comprises the following steps:
Preliminary treatment: remove the suspended matter in pit water, adopt precipitation, filtration process, in filtration procedure, add optically catalytic TiO 2 device to carry out treatment step, and tentatively adjust pH value, this optically catalytic TiO 2 device adopts the setting of activated carbon supported Nano titanium dioxide, and above this optically catalytic TiO 2 device, be provided with ultraviolet lamp, on this optically catalytic TiO 2 device, be also connected with oxygen increasing pump;
Remove smithcraft: adopt the method for chemical oxidation, burning is changed into rear filtration of precipitation and remove;
Advanced treatment: first adopt embrane method pre-treatment, then adopt ion-exchange to carry out further purifying treatment, the whole pH value of the step of going forward side by side, reclaims the pit water that reaches drinking water standard, and all the other dense water and mud are collected pending.
2. the method for a kind of advanced treatment pit water according to claim 1, it is characterized in that, preliminary treatment step adopts preliminary sedimentation equalizing tank-line-blending-primary purification-secondary-cleaned-intermediate pool to carry out the removal of the settlement separate suspended substance of finishing dealing with, and tentatively adjusts pH value to 7.0-8.0 scope.
3. the method for a kind of advanced treatment pit water according to claim 1, is characterized in that, removes smithcraft and adopts aeration contact oxidation method, and add suitable catalyzer and accelerate catalytic metal oxidation rate, improves and removes metal efficiency.
4. the method for a kind of advanced treatment pit water according to claim 1, is characterized in that, also comprises dense water and sludge treatment step:
Dense water treatment: be directly used in waste dump fire extinguishing; Mud is processed and the export trade in the lump of mine coal slime through dewatering system.
5. the method for a kind of advanced treatment pit water according to claim 1, is characterized in that, in advanced treatment step, embrane method pre-treatment comprises micro-filtration, ultrafiltration and nanofiltration.
6. the method for a kind of advanced treatment pit water according to claim 5, is characterized in that, advanced treatment adopts: the method for micro-filtration-ultrafiltration-ion-exchange is carried out.
7. the method for a kind of advanced treatment pit water according to claim 6, is characterized in that, in advanced treatment, further pH value is adjusted to 6.8-7.2 scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359439.3A CN104086035A (en) | 2014-07-28 | 2014-07-28 | Advanced treatment method for mine water |
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| CN201410359439.3A CN104086035A (en) | 2014-07-28 | 2014-07-28 | Advanced treatment method for mine water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226495A (en) * | 2016-07-14 | 2016-12-14 | 中国矿业大学 | A kind of experimental technique surveying coal mine gob spoil purifying water in mine-well |
| CN110668657A (en) * | 2019-11-06 | 2020-01-10 | 中国恩菲工程技术有限公司 | Water purification process |
| CN110950457A (en) * | 2019-12-09 | 2020-04-03 | 山西潞安矿业集团慈林山煤业有限公司李村煤矿 | Advanced treatment device for mine water micro-pollutants |
-
2014
- 2014-07-28 CN CN201410359439.3A patent/CN104086035A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226495A (en) * | 2016-07-14 | 2016-12-14 | 中国矿业大学 | A kind of experimental technique surveying coal mine gob spoil purifying water in mine-well |
| CN106226495B (en) * | 2016-07-14 | 2018-07-03 | 中国矿业大学 | A kind of experimental method for surveying coal mine gob spoil purifying water in mine-well |
| CN110668657A (en) * | 2019-11-06 | 2020-01-10 | 中国恩菲工程技术有限公司 | Water purification process |
| CN110950457A (en) * | 2019-12-09 | 2020-04-03 | 山西潞安矿业集团慈林山煤业有限公司李村煤矿 | Advanced treatment device for mine water micro-pollutants |
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Application publication date: 20141008 |