CN103964629B - Acidic mine waste water OLWS method - Google Patents
Acidic mine waste water OLWS method Download PDFInfo
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- CN103964629B CN103964629B CN201310042826.XA CN201310042826A CN103964629B CN 103964629 B CN103964629 B CN 103964629B CN 201310042826 A CN201310042826 A CN 201310042826A CN 103964629 B CN103964629 B CN 103964629B
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- wastewater
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- 239000002351 wastewater Substances 0.000 title claims abstract description 87
- 230000002378 acidificating effect Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 22
- 239000000706 filtrate Substances 0.000 claims abstract description 21
- 230000003647 oxidation Effects 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims abstract description 6
- 229910021653 sulphate ion Inorganic materials 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 6
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 206010064930 age-related macular degeneration Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 235000019687 Lamb Nutrition 0.000 description 1
- 235000011609 Pinus massoniana Nutrition 0.000 description 1
- 241000018650 Pinus massoniana Species 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- JNVCSEDACVAATK-UHFFFAOYSA-L [Ca+2].[S-]SSS[S-] Chemical compound [Ca+2].[S-]SSS[S-] JNVCSEDACVAATK-UHFFFAOYSA-L 0.000 description 1
- 238000003914 acid mine drainage Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 229940051851 sulfurated lime Drugs 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Abstract
The invention discloses a kind of acidic mine waste water OLWS method, its step is as follows: a) mine wastewater A is collected in wastewater collection pond; B) be that the mine wastewater A of α enters in natural oxidation system in a quantitative manner by pH value, thus form sulfuric acid/ferric sulphate solution; C) by through step b) the acidic mine waste water B that obtains after process enters with the filtrate neutralized system that is major ingredient containing calcium carbonate filtrate, and acid ore deposit tail water pH is raised; D) by through step c) the mine wastewater C that obtains after process enters wetland, place many matrix fills in described wetland and plant the plant being implanted with and easily absorbing the tail water of resistance to ore deposit composition environment, described wetland effectively stops mine wastewater C, adsorb after be namely disposed.The invention has the beneficial effects as follows: long action time, processing power are strong, efficiency is high; Easy construction; Running cost, maintenance cost are low, completely unpowered.
Description
Technical field
The present invention relates to a kind of mine wastewater OLWS method.
Background technology
The origin cause of formation of acidic mine waste water (AcidMineDrainage, AMD) is the oxygenizement of sulfide mineral and causes, and also closely bound up with the effect of microorganism.The sulphate content of AMD is high and pH value is lower, and the discharge of this type of waste water is very serious for the destruction of ecotope.
The method of domestic and international improvement acidic mine waste water is a lot, substantially can be divided into " initiatively administering " and " passive improvement " method.Initiatively administer and mainly contain neutralisation, sulphide precipitation, aerating oxidation filtration method etc.Wherein, neutralisation is widely used in China AMD process as the easy reliable method of one; conventional neutralizing agent has Wingdale, calcium carbonate, calcium hydroxide, caustic soda etc.; but a large amount of mud (containing plurality of heavy metal and hazardous and noxious substances) that N-process produces very easily cause secondary pollution to environment, simultaneously running cost and handling cost high; Sulphide precipitation is by adding sulfiding reagent in sewage; the metal ion in sewage is made to form sulfide precipitation; conventional vulcanizing agent mainly contains: sodium sulphite, Sodium sulfhydrate, hydrogen sulfide, sulfurated lime, iron sulphide etc.; adopt the clearance of sulfurization-precipitation method heavy metal ion high; the strong adaptability of process waste water, and be conducive to the recycling of heavy metal, but pH value is difficult to control; processing cost is high, easily produces hydrogen sulfide polluted air when temperature controls bad; Aerating oxidation filtration method has very good effect to heavy metals such as Fe, Mn of removing in acid waste water, but its process structures many (needing pre-treatment), power consumption is large, and maintenance cost is higher.Therefore, due to many defects that active administering method exists, make domestic and international many experts and scholars start to seek a kind of more economical effective AMD treatment technology.
Summary of the invention
Object of the present invention is exactly to solve the problem, and provides a kind of mine wastewater OLWS method.
To achieve these goals, the present invention adopts following technical scheme:
A kind of acidic mine waste water OLWS method, is characterized in that having following steps:
A) acidic mine waste water A is collected in wastewater collection pond;
B) be that the mine wastewater A of α enters in natural oxidation system in a quantitative manner by pH value, thus form sulfuric acid/ferric sulphate solution, the envrionment temperature of natural oxidation system, the residence time of acidic mine waste water in natural oxidation system are defined as T0 and t0 respectively, and the pH value of acidic mine waste water B is after treatment defined as β;
C) by through step b) after process and the acidic mine waste water B that pH value is β enters filtrate neutralized system containing calcium carbonate filtrate; acid ore deposit tail water pH is raised; the envrionment temperature of filtrate neutralized system, the residence time of acidic mine waste water B in filtrate neutralized system are defined as T1 and t1 respectively, and the pH value of acidic mine waste water C is after treatment defined as γ;
D) by after step c) process and the acidic mine waste water C that pH value is γ enters wetland, place many matrix fills in described wetland and plant the plant being implanted with the tail water of resistance to ore deposit environment, described wetland effectively stops acidic mine waste water C, adsorb after be namely disposed.
In step b), envrionment temperature T0, relation between residence time t0 and the pH value α three of acidic mine waste water see table 1:
Table 1
In step c), envrionment temperature T1, relation between residence time t1 and the pH value β three of acidic mine waste water see table 2:
Table 2
For the numerical value excluding table 1, table 2, according to the adjacent values determination correlation parameter of itself and table 1, table 2.
According to different waste water quality, determine oxidization time, in and the time, natural oxidation system, neutralized system.
Acidic mine waste water is usually containing a large amount of heavy metal ion, and such as copper, zinc, nickel, lead, chromium, iron and prussiate, therefore, take into full account these factors at the process need of process.
The invention has the beneficial effects as follows:
(1) long action time, processing power is strong, efficiency is high.
(2) easy construction.
(3) running cost, maintenance cost are low, completely unpowered.
Accompanying drawing explanation
Fig. 1 is processing flow chart of the present invention.
Embodiment
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
Embodiment 1: see Fig. 1, first, is collected in wastewater collection pond by acidic mine waste water A, to ensure the stable of the subsequent process water yield; Then, be that the acidic mine waste water A of α=4.47 enters in natural oxidation system in quantitative (flow) mode (such as 1m3/s) by pH value, thus form sulfuric acid-ferric sulphate solution, now, envrionment temperature T0=15 DEG C, the residence time t0=3d(days of acidic mine waste water in natural oxidation system of natural oxidation system), the pH value of acidic mine waste water B is after treatment defined as β, and β value here needs according to Site Detection, and subsequent parameter is determined according to detected value β; Moreover; by after aforementioned processing and the acidic mine waste water B that pH value is β enters filtrate neutralized system containing calcium carbonate filtrate; acid ore deposit tail water pH is raised; the envrionment temperature of filtrate neutralized system, the residence time of acidic mine waste water B in filtrate neutralized system are defined as T1 and t1 respectively; the pH value of acidic mine waste water C is after treatment defined as γ; here it should be noted that, the pH value β of acidic mine waste water B and T1 determines t1, concrete reference table 1; Finally, by after abovementioned steps process and the acidic mine waste water C that pH value is γ enters wetland, place many matrix fills in described wetland and plant the plant being implanted with the tail water of resistance to ore deposit environment, described wetland effectively stops acidic mine waste water C, adsorb after be namely disposed.
Embodiment 2: first, is collected in wastewater collection pond by acidic mine waste water A, then, be that the acidic mine waste water A of α=5.37 to enter in a quantitative manner in natural oxidation system and (prevents that the water yield is excessive to impact treatment system by pH value, oxidation system can adopt the water channel of some equidistant layouts, the flow modes such as the water yield also adopts that enter of each water channel enter acidic mine waste water A), thus form sulfuric acid/ferric sulphate solution, the now envrionment temperature T0=25 DEG C of natural oxidation system, the residence time t0=0 of acidic mine waste water in natural oxidation system hour (under the environment of uniform temp, the pH value of acidic mine waste water A is lower, then in oxidation system, the residence time is shorter), the pH value of acidic mine waste water B is after treatment defined as β, and β=4.92, moreover, by after abovementioned steps process and the acidic mine waste water B that pH value is β enters containing calcium carbonate filtrate filtrate neutralized system (filtrate neutralized system can adopt the mode as neutralized system to arrange, but need in water channel to put into calcium carbonate filtrate, uniform along water channel bearing of trend), acid ore deposit tail water pH is raised, by the envrionment temperature T1=25 DEG C of filtrate neutralized system, the residence time t1=2h(of acidic mine waste water B in filtrate neutralized system is under the environment of uniform temp, the pH value of acidic mine waste water B is higher, then in neutralized system, the residence time is shorter), the pH value of acidic mine waste water C is after treatment defined as γ, and γ=6.6, finally, by after abovementioned steps process and the acidic mine waste water C that pH value is γ enters wetland, place many matrix fills (such as pebbles, rubble, soil etc.) in described wetland and plant the plant (such as tea, Pinus massoniana Lamb, awns beanstalk etc.) being implanted with the tail water of resistance to ore deposit environment, described wetland effectively stops acidic mine waste water C, adsorb after be namely disposed, the discharge water pH value after now system process is 6.8.
Embodiment 3: this case is the acidic mine waste water processing item in Shi Cheng village of Yin Keng township, Kaihua County, adopt acidic mine waste water OLWS method of the present invention, the numerical value measured by monitoring station, Changshan County is as following table 3:
Here envrionment temperature T0, T1 are 25 DEG C, and the residence time t0 of acidic mine waste water in natural oxidation system is approximately 48 hours, and the residence time t1 of acidic mine waste water B in filtrate neutralized system is approximately 3h.
Table 3
Here former water is acidic mine waste water A; Oxidation system water outlet is acidic mine waste water B; Neutralized system water outlet is acidic mine waste water C; Total draining is process discharge water.
Wastewater collection pond is if outdoor state, then rainwater is larger for the impact in wastewater collection pond, now wastewater collection pond overflow can enter unnecessary waste water outflow system, this unnecessary waste water outflow system can be the open system directly communicated with the external world, under the precipitation of the large scale of construction, the waste water of overflow cannot control effectively, and preferably processing mode is that wastewater collection pond can arrange the radical occlusion device preventing rainwater from entering, such as awning, Chi Gai etc.When rainwater inlet is less, recycle pump can be set by between unnecessary waste water outflow system and wastewater collection pond, by the waste water pumpback of overflow to wastewater collection pond.
OLWS(OxidationLimestoneWetlandSystems) be oxidized the one that Wingdale wet land system belongs to passive treatment technology, the process for acidic mine waste water has significant treatment effect.
Omit the description to known technology herein.
The foregoing is only the preferred embodiment of the present invention, protection scope of the present invention is not limited in above-mentioned embodiment, and every technical scheme belonging to the principle of the invention all belongs to protection scope of the present invention.For a person skilled in the art, the some improvement carried out under the prerequisite not departing from principle of the present invention, these improvement also should be considered as protection scope of the present invention.
Claims (1)
1. acidic mine waste water OLWS method, is characterized in that, it comprises the steps:
A) mine wastewater A is collected in wastewater collection pond;
B) be that the mine wastewater A of α enters in natural oxidation system in a quantitative manner by pH value, thus form sulfuric acid/ferric sulphate solution, the envrionment temperature of natural oxidation system, the residence time of mine wastewater in natural oxidation system are defined as T0 and t0 respectively, the pH value of mine wastewater B is after treatment defined as β, wherein, natural oxidation system adopts the water channel of some equidistant layouts;
C) by through step b) after process and the mine wastewater B that pH value is β enters filtrate neutralized system containing calcium carbonate filtrate composition, acid ore deposit tail water pH is raised, the envrionment temperature of filtrate neutralized system, the residence time of acidic mine waste water B in filtrate neutralized system are defined as T1 and t1 respectively, and the pH value of acidic mine waste water C is after treatment defined as γ;
D) by through step c) after process and the acidic mine waste water C that pH value is γ enters wetland, place many matrix fills in described wetland and plant the plant being implanted with the tail water of resistance to ore deposit environment, described wetland effectively stops acidic mine waste water C, adsorb after be namely disposed;
Step b) in, envrionment temperature T0, relation between residence time t0 and the pH value α three of acidic mine waste water see table:
Step c) in, envrionment temperature T1, relation between residence time t1 and the pH value β three of mine wastewater see table:
。
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| CN201310042826.XA CN103964629B (en) | 2013-01-31 | 2013-01-31 | Acidic mine waste water OLWS method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109574370A (en) * | 2017-09-29 | 2019-04-05 | 中冶华天工程技术有限公司 | Abandoned mine process for treating acidic waste water |
| CN109970236A (en) * | 2019-03-21 | 2019-07-05 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of unordered discharge ferrimanganic mine seepage water purification system |
| CN110407414B (en) * | 2019-08-07 | 2021-05-28 | 中国矿业大学 | Acid mine wastewater treatment method |
| CN114163074A (en) * | 2021-12-03 | 2022-03-11 | 南京大学 | Method for treating tail water of sewage treatment plant by adopting constructed wetland |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219844A (en) * | 2008-01-23 | 2008-07-16 | 太原理工大学 | Technique for biological treatment of mine acidic wastewater |
| CN102701534A (en) * | 2012-06-25 | 2012-10-03 | 西安科技大学 | Ecological treatment method for acid mine water of coal mine |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101219844A (en) * | 2008-01-23 | 2008-07-16 | 太原理工大学 | Technique for biological treatment of mine acidic wastewater |
| CN102701534A (en) * | 2012-06-25 | 2012-10-03 | 西安科技大学 | Ecological treatment method for acid mine water of coal mine |
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