CN105858958A - Arsenic-antimony-cyanogen-containing mine wastewater treatment method - Google Patents
Arsenic-antimony-cyanogen-containing mine wastewater treatment method Download PDFInfo
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- CN105858958A CN105858958A CN201610279149.7A CN201610279149A CN105858958A CN 105858958 A CN105858958 A CN 105858958A CN 201610279149 A CN201610279149 A CN 201610279149A CN 105858958 A CN105858958 A CN 105858958A
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- Prior art keywords
- water
- waste water
- antimony
- arsenic
- oxidant
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- -1 Arsenic-antimony-cyanogen Chemical compound 0.000 title claims abstract description 9
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 7
- 239000002351 wastewater Substances 0.000 claims abstract description 94
- 238000000034 method Methods 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229910001868 water Inorganic materials 0.000 claims abstract description 72
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 42
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 32
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 239000007800 oxidant agent Substances 0.000 claims abstract description 20
- 230000001590 oxidative effect Effects 0.000 claims abstract description 20
- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 10
- 238000001179 sorption measurement Methods 0.000 claims abstract description 8
- 230000003647 oxidation Effects 0.000 claims abstract description 6
- 238000005345 coagulation Methods 0.000 claims abstract description 3
- 230000015271 coagulation Effects 0.000 claims abstract description 3
- 238000004064 recycling Methods 0.000 claims abstract description 3
- 239000002893 slag Substances 0.000 claims abstract description 3
- 230000001112 coagulating effect Effects 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 9
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 8
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 5
- 239000000460 chlorine Substances 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 239000000701 coagulant Substances 0.000 claims description 5
- 239000011790 ferrous sulphate Substances 0.000 claims description 5
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 4
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical group ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims description 4
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001117 sulphuric acid Substances 0.000 claims description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 239000003570 air Substances 0.000 claims description 2
- 229910001439 antimony ion Inorganic materials 0.000 claims description 2
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 2
- 239000006071 cream Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 2
- 229910000358 iron sulfate Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 235000010755 mineral Nutrition 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims 1
- 229960002089 ferrous chloride Drugs 0.000 claims 1
- 238000005189 flocculation Methods 0.000 claims 1
- 230000016615 flocculation Effects 0.000 claims 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims 1
- 239000004408 titanium dioxide Chemical group 0.000 claims 1
- 239000010931 gold Substances 0.000 abstract description 20
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 19
- 229910052737 gold Inorganic materials 0.000 abstract description 19
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 16
- 229910052793 cadmium Inorganic materials 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 229910052731 fluorine Inorganic materials 0.000 abstract description 6
- 239000011737 fluorine Substances 0.000 abstract description 6
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000002352 surface water Substances 0.000 abstract description 3
- 239000010802 sludge Substances 0.000 abstract description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 238000005065 mining Methods 0.000 description 11
- 238000001556 precipitation Methods 0.000 description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- 239000011701 zinc Substances 0.000 description 8
- 239000004155 Chlorine dioxide Substances 0.000 description 6
- 235000019398 chlorine dioxide Nutrition 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910017251 AsO4 Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 125000001870 arsonato group Chemical group O=[As]([O-])([O-])[*] 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- DJHGAFSJWGLOIV-UHFFFAOYSA-N Arsenic acid Chemical compound O[As](O)(O)=O DJHGAFSJWGLOIV-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- DLISVFCFLGSHAB-UHFFFAOYSA-N antimony arsenic Chemical compound [As].[Sb] DLISVFCFLGSHAB-UHFFFAOYSA-N 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- QPJDMGCKMHUXFD-UHFFFAOYSA-N cyanogen chloride Chemical compound ClC#N QPJDMGCKMHUXFD-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229960004887 ferric hydroxide Drugs 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 2
- LDHBWEYLDHLIBQ-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide;hydrate Chemical compound O.[OH-].[O-2].[Fe+3] LDHBWEYLDHLIBQ-UHFFFAOYSA-M 0.000 description 2
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 1
- 229940000488 arsenic acid Drugs 0.000 description 1
- HAYXDMNJJFVXCI-UHFFFAOYSA-N arsenic(5+) Chemical compound [As+5] HAYXDMNJJFVXCI-UHFFFAOYSA-N 0.000 description 1
- 229940006020 arsenite ion Drugs 0.000 description 1
- OWTFKEBRIAXSMO-UHFFFAOYSA-N arsenite(3-) Chemical compound [O-][As]([O-])[O-] OWTFKEBRIAXSMO-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- DNHVXYDGZKWYNU-UHFFFAOYSA-N lead;hydrate Chemical compound O.[Pb] DNHVXYDGZKWYNU-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910052959 stibnite Inorganic materials 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- 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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
- C02F1/763—Devices for the addition of such compounds in gaseous form
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses an arsenic-antimony-cyanogen-containing mine wastewater treatment method. The method includes the steps of putting an arsenic and antimony removing agent and an oxidant in underground wastewater of a gold mine so that insoluble compounds produced through arsenic, antimony, lead, cadmium and other heavy metals in wastewater can be deposited and removed; continuing to add an oxidant so that insoluble compounds produced through the residual arsenic and antimony removing agent can be deposited, most of CN- can be removed and slag and water can be rapidly separated through the net capturing and adsorbing effect of flocculant (or 3# flocculant); putting a pH regulating agent and flocculant (or 3# flocculant) in forepart treatment water for coagulation to further remove heavy metals, fluorine and other pollution factors in wastewater and safely dispose water treatment sludge; conducting pH value regulation, oxidation, adsorption and other treatment on clear water so that the indexes of lead, cadmium, arsenic, antimony, COD and CN- in treated water can stably reach the limit stipulated by Integrated Wastewater Discharge Standard (GB 8978-1996 replacing GB 8978-88) and can reach the class-II water quality standard of environmental quality standards for surface water (GB3838-2002) and underground wastewater recycling can be achieved.
Description
Technical field
The present invention relates to a kind of mine wastewater treatment method, be specifically related to gold mine mining wastewater processing method.
Background technology
China is golden production big country, and gold grade in Ore is relatively low, only has several grams to tens grams in general ton Ore
Gold, Jin Chang and lead, antimony, arsenic association, gold mine recovery process typically requires and carries out underground mining, mining wastewater refers to mine
The waste water that recovery process is formed, subsurface excavation construction waste water is mainly derived from water and the earth's surface that aquifer pours in or penetrates into mine
The waste water of precipitation, mining technology process production, ground precipitation, down-hole waste water usually contains the heavy metals such as float, lead, antimony, arsenic
Ion.
For a long time, carry golden frequently with Cyanide Process from Ore, such as all sliming cyanidation-carbon slurry/zinc dust precipitation work
Skill, refined gold ore cyaniding-carbon slurry/zinc dust precipitation technique, dump leaching-carbon adsorption technique etc., can produce in ore dressing and leaching gold operation process
Raw a large amount of containing the waste residue of heavy metal, waste liquid and Tailings Slurries such as cyanide, lead, arsenic, antimony.If these cyanide-containing waste substances are carried out not in time
Effectively collect disposal, random discharge can cause serious environmental pollution, waste water and waste residue contain cyanide, lead, arsenic, antimony etc.
Heavy metal can enter in soil and groundwater body, causes local ground watering and soil severe contamination.
For a long time, China's gold mine down-hole waste water disposal facility imperfection, down-hole waste water be usually taken simple precipitation,
Discharge after coagulating kinetics or as mine ore dressing process water, process water water quality and be the most all difficult to reach mutually deserved discharge mark
Accurate.
Certain mining company, during exploitation of gold deposit, produces the substantial amounts of down-hole containing pollutant such as arsenic, antimony and cyanides and gives up
Water, its pH value about 6.5～8.5, because of its ore-dressing practice can not by this down-hole waste water all of, this down-hole waste water without effectively place
Surrounding enviroment can be caused severe contamination by reason directly discharge.
The most domestic to the process of gold mine down-hole waste water, mainly take chemical precipitation method, to containing heavy metal wells such as arsenic antimony
Lower waste water processes and generally uses Calx-ferrous sulfate Combined Treatment method, Calx-electrochemistry flocculence, Calx-bodied ferric sulfate
Method, Calx-aluminium polychlorid method, sodium sulfide-lime method etc., down-hole waste water can be back to ore-dressing practice after treatment, down-hole
Waste water outer draining matter typically can reach " integrated wastewater discharge standard " (GB 8978-1996 replaces GB8978-88)
The limit value of regulation.
Gold mine waste water of the present invention is complicated containing arsenic Sb-Au ore underground mining operation generation, is mainly derived from storage
Water layer pours in or penetrates into water and ground precipitation, the waste water of mining technology process production, the ground precipitation etc. of mine, it is common that a large amount of
Float, arsenic, antimony, lead, heavy metal and the pollution factor such as fluorine, ammonia nitrogen such as zinc, the most once carried out cyaniding due to mining area and carried
Gold, local ground watering is heavily contaminated, causes carrying out CN in the waste water of down-hole-Severe overweight, water quality is sufficiently complex.
Along with Chinese national economy sustainable development, many gold mines enter into west area and carry out gold mining, western
Area ecology fragility, environment sensitive, along with Environmental protection requires progressively to strengthen, country and local government are to these environment
Sensitizing range discharge of wastewater defines tightened up emission request, therefore uses the chemical precipitation method of routine to process down-hole waste water,
Process water water quality and be difficult to meet requirement that local environmental administration specifies (such as " water environment quality standard " (GB3838-2002)
II class water standard), therefore exploitation has science and engineering at the down-hole waste water that specific aim, the suitability, high treating effect, processing cost are low
Skill and method, be to improve water resource utilization efficiency, saving water resource, the important measures of protection environment.
Summary of the invention
It is contemplated that overcome the deficiencies in the prior art, it is provided that a kind of gold mine waste water process side Han arsenic antimony cyanogen down-hole
Method.
In order to achieve the above object, the technical scheme that the present invention provides is:
Described gold mine method of wastewater treatment Han arsenic antimony cyanogen down-hole comprises the steps:
(1) by carrying out the most heavy and homogenizing process after the wastewater collection of down-hole, remove bulky grain object and metalliferous mineral granule, make
Down-hole waste water quality and water quantity holding are stable；
(2) waste water after processing through step (1) adds dearsenization antimony agent, and adds oxidant A, control ph be 6～
9, make the arsenic in waste water, antimony pollution thing react with dearsenization antimony agent, the insoluble compound of generation enters in water treatment residues；Dearsenization antimony
The dosage of agent is 1.0～2.0g/L waste water；
(3) waste water after processing through step (2) continuously adds oxidant A, by dissolubility remaining in step (2) relatively
Big containing arsenic, the compound that changes into indissoluble containing antimony ion；Dearsenization antimony agent remaining in step (2) is converted into insoluble compound
Enter in water treatment residues；Remove part cyanide simultaneously；Oxidization time 30～60min；The addition of described oxidant A is 20
～500mg/l；
(4) waste water after processing through step (3) adds flocculant and carry out coagulating treatment, then realize pulp water by sedimentation
Separate, process mud and carry out carrying out safe disposal according to dangerous waste disposal requirement after dehydration；The coagulating treatment time 5～
10min, the sedimentation time is 30～60min；The dosage of described flocculant is 0.1～1.0mg/L waste water；
(5) carry out pH value of waste water adjustment to adding pH regulator A in the waste water that step (4) processes, add coagulation simultaneously
Agent carries out coagulating treatment, and the coagulating treatment time is 10～30min, and the sedimentation time after coagulating treatment is 30～60min, controls PH
Value scope is 10～11.5；Process mud to carry out carrying out safe disposal according to dangerous waste disposal requirement after dehydration, process water
Then direct reuse in ore dressing or enters next step process；The addition of described coagulant is 0.1～1.0mg/L waste water；
(6) add pH regulator B in the waste water that step (5) processes, waste water pH value is adjusted to 8.0～9.0；
(7) carrying out oxidation processes to adding oxidant B in the waste water that step (6) processes, the dosage of oxidant B is 5
～20mg/L waste water, oxidization time is 30～60min；
(8) will discharge after Porous Medium Adsorption filter process through the waste water that step (7) process, or carry out advanced treating
After carry out recycling.
Preferably, step (2) described dearsenization antimony agent is iron sulfate, ferrous sulfate, bodied ferric sulfate, iron chloride, protochloride
The compound of one or more in ferrum, ferric nitrate.
Preferably, step (3) described oxidant A is at least one in air, oxygen, hydrogen peroxide, ozone.
Preferably, step (4) described flocculant is polyacrylamide or 3# flocculant.
Preferably, step (5) described pH regulator A is at least one in slaked lime, lime cream, magnesium oxide, carbide slag
Or several compounds.
Preferably, step (6) described pH regulator B is at least one in sulphuric acid, hydrochloric acid.
Preferably, step (7) described oxidant B is at least one in chlorine, hypochlorous acid, chlorine dioxide, ozone.
The down-hole waste water that gold mine mining produces contains the heavy metal ion such as a large amount of float, lead, antimony, arsenic,
Simultaneously because mining area once carried out cyanide gold-leaching operation, local ground watering is caused to be contaminated, containing substantial amounts of in the waste water of down-hole
Cyanide, this down-hole waste water after treatment, can realize rapidly pulp water and separate, and processing in water the indexs such as arsenic, antimony, cyanogen can stably reach
The limit value specified to " integrated wastewater discharge standard " (GB 8978-1996 replaces GB 8978-88), and can reach " earth's surface water ring
Border quality standard " (GB3838-2002) II class water standard limit value, meet ore-dressing technique requirement simultaneously, can effectively realize well
Lower waste water reclaiming.
The invention will be further described below:
The present invention is directed in the waste water of gold mine down-hole suspension content high, heavy metal and the CN such as leaded, zinc, arsenic, antimony-Deng
Pollution factor, can cause Regional Environmental Pollution during outer row, it is provided that a kind of economy, be suitable for, processing cost is low, and down-hole waste water processes
New method, down-hole waste water can be used as ore-dressing technique water, processes the lead of water, arsenic, antimony, COD, CN after processing-Can stablize etc. index
Reach the limit value that " integrated wastewater discharge standard " (GB 8978-1996 replaces GB 8978-88) specify, and can reach " surface water
Environmental quality standards " (GB3838-2002) II class water standard limit value requirement.
The antimony cyanogen mine wastewater treatment method containing arsenic of the present invention is for gold mine down-hole waste water, uses useless to down-hole
Water adds dearsenization antimony agent and oxidant, and the compound precipitation making the heavy metals such as the arsenic in waste water, antimony, lead, zinc generate indissoluble is removed；
By oxidant make remnants containing arsenic antimony and, dearsenization antimony agent generates the compound precipitation of indissoluble, and removes major part CN-, utilize
The net of coagulant (polyacrylamide) is caught and is realized pulp water sharp separation with adsorption.Then by adding in leading portion process water
PH regulator A and coagulant (polyacrylamide) carry out coagulating treatment, remove the heavy metal ion in waste water and fluorine etc. further
Pollution factor, water treatment sludge carries out safe disposal；Clear water through toning pH value, aoxidize, adsorb after even depth processes, process water
Lead, arsenic, antimony, cadmium, COD, CN-(GB 8978-1996 replaces GB can to stably reach " integrated wastewater discharge standard " etc. index
Limit value 8978-88) specified, and can reach " water environment quality standard " (GB3838-2002) II class water standard limit value
Requirement, thus realize down-hole waste water reclaiming.
The know-why of the present invention is:
1, the waste water producing down-hole carries out the most heavy homogenizing process, makes waste component keep stable, and by bigger in waste water
The suspended substance removal of granule, alleviates subsequent treatment pressure.
2, in waste water, add dearsenization antimony agent, utilize Fe in dearsenization antimony agent2+、Fe3+React with the pollutant such as arsenic, antimony,
The compound of production indissoluble enters in water treatment residues to be removed, and reaction equation is as follows:
(1) dearsenization
Fe3++AsO4 3-=FeAsO4↓
H3AsO4+8Fe(OH)3=Fe2O3。As2O3。5H2O↓+H2O
(2) de-antimony
2SbS3 3-+3FeSO4=Sb2S3↓+3FeS+3SO4 2-
2SbO3 3-+3FeSO4=Sb2O3↓+3FeO+3SO4 2-
3, by the effect of oxidant, arsenite ion, antimonious acid ion conversion are become arsenic acid, metaantimmonic acid ion；And will be useless
Fe in dearsenization antimony agent remaining in water2+Change into Fe3+, generate the ferric hydroxide precipitate of indissoluble, by hydrated ferric oxide. flocculent deposit
Net catch, crane span structure, adsorption, remove the hydroxide particles such as Pb, Zn, Cd, As, Sb in waste water.Reaction equation is as follows:
Fe2++O2=Fe3++e
AsO3 3-+H2O2=AsO4 3-+H2O
Fe(OH)2+O2=Fe (OH)3↓
Fe3+3OH-=Fe (OH)3↓
Fe(OH)3+AsO3 3-=Fe AsO3↓+3OH-
Fe(OH)3+AsO4 5-=Fe SbO4↓+3OH-
Fe(OH)3+SbO3 3-=Fe SbO3↓+3OH-
Fe(OH)3+SbO4 5-=Fe SbO4↓+3OH-
4, flocculant (polyacrylamide or 3# flocculant) mainly plays electrical change effect, with hydrated ferric oxide. floccule one
Work, caught by net, crane span structure, adsorption make the Pb in waste water2+、Zn2+、Cd2+, As, Sb etc. hydroxide particles together
Settle down, enter and water treatment residues realizes remove.
5, in leading portion process water, add pH regulator and flocculant, pH value of waste water is adjusted to 10～11.5, makes waste water
The heavy metal ion such as the lead of middle remnants, zinc, cadmium generate indissoluble hydroxide such as zinc hydroxide/lead/cadmium；Fluorinion in waste water with
Ca2+、Mg2+Generate insoluble compound calcium fluoride/magnesium；Fe2+Change into Fe3+And generate indissoluble ferric hydroxide precipitate, at flocculant
The effect of catching etc. of the absorption of (3# flocculant), net realizes pulp water and separates.Reaction equation is as follows:
Ca(OH)2+Me2+=Ca2++Me2+(OH)2↓, Me2+Refer to Pb, Zn, Cd, Fe etc..
Ca2++2F-=Ca F2↓
Mg2++ 2F-=Ca F2↓
Fe(OH)2+O2=Fe (OH)3↓
6, the oxidant such as liquid chlorine, chlorine, hypochlorous acid, chlorine dioxide, ozone has the strongest oxidisability, can be by oxidation
Cyanogen (the CN in waste water effectively removed by the Oxidation of agent-) and the organic pollutant such as COD, reaction equation is as follows:
(1) hypochlorous acid
CN-+ClO-+H2O=CNCl+OH-；
CNCl+2OH-=CNO-+Cl-+H2O；
CNO-+2H2O=CO2+NH3+OH-；
2CNO-+3ClO-=CO2+N2+3Cl-+CO3 2-；
(2) chlorine dioxide
2ClO2+5CN-+ 2OH-=2Cl-+5CNO-+H2O
2ClO2+5CN-+H2O=2Cl-+3CNO-+2HCNO
2ClO2+2CN-=2Cl-+2CO2↑+N2↑
2CNO-+H2O=2CO2↑+N2↑+OH-；
7, use porous media as absorption carrier, make the chlorine dioxide of the residual in waste water be adsorbed onto in absorption carrier,
By Chlorine Dioxide Oxidation and carrier adsorption effect, make float in waste water, COD, CN-Degraded further Deng pollution factor
And removal.
8, heavy metal, COD, the CN such as water ph value, lead, zinc, arsenic, antimony are processed-、F-" integrated wastewater row can be stably reached etc. index
Put standard " (GB 8978-1996 replaces GB 8978-88) limit value of specifying, and can reach " water environment quality standard "
(GB3838-2002) II class water standard limit value requirement.
The method of the present invention is high for gold mine down-hole waste water suspension content, containing heavy metals such as arsenic, antimony, lead, zinc,
And the pollution factor such as cyanogen, fluorine processes, process route is succinct, and raw material sources are extensive, processing cost is low.By this process
Water after process, harmful substance clearance is high, and indices is good, and what energy was stable reaches state sewage emission standard, Ke Yi great
The discharge of the amplitude abatement pollutant such as heavy metal, cyanogen；Process water can fully recovering in ore-dressing practice, effectively realize down-hole waste water money
Source, is a kind of down-hole waste water New Method for Processing being worthy of popularization.
Accompanying drawing explanation
Fig. 1 is the flow chart of the inventive method.
Detailed description of the invention
Embodiment 1
After down-hole waste water produces, clarify 24 hours, then add ferrous sulfate to down-hole waste water, stir 10min, then to useless
Being passed through air, aeration 60min in water, add 3# flocculant and stir 5min, stand sample analysis after 60min, result is shown in
Table 1, when ferrous sulfate dosage is 1.0～2.0mg/l, when flocculant dosage is 1.0mg/l, processes the arsenic in water, antimony
Deng concentration of heavy metal ion, CODcr, CN-Being reached relatively low degree, water quality is relatively clear, and arsenic, antimony can stably reach country's sewage
Comprehensive discharge standard.
Table 1
| Project | pH | Pb2+ | As | Cd2+ | Sb | CN- |
| Before process (mg/l) | 7.17 | 0.172 | 1.24 | 0.008 | 2.04 | 1.86 |
| After process (mg/l) | 8.64 | 0.005 | 0.015 | 0.001L | 0.004 | 0.46 |
Embodiment 2
Feeding lime breast in aforementioned processing water in example 1, adjusts waste water PH to PH=10～11.5, after stirring 30min
Adding 3# flocculant, take supernatant test after natural subsidence 60min, result is shown in Table 2, processes the arsenic in water, antimony, lead, fluorine
All reaching relatively low degree Deng pollution factor, water quality is relatively clear, and the index such as arsenic, antimony, lead, fluorine can stably reach country integrated wastewater row
Put standard and " water environment quality standard " (GB3838-2002) II class water standard.
Table 2
| Project | pH | Pb2+ | Zn2+ | As | Cd2+ | Sb | F- |
| Before process (mg/l) | 0.062 | 0.06 | 1.15 | 0.008 | 2.04 | 1.42 | |
| After process (mg/l) | 11.5 | 0.005 | 0.005L | 0.003 | 0.001L | 0.004 | 0.05 |
Note: Sb, Zn2+For former water desired value
Embodiment 3
Processing water in example two and add sulphuric acid, adjustment wastewater pH, to 8.0～9.0, then adds dioxy in process water
Changing chlorine, sample analysis after aoxidizing 60 minutes, result is shown in Table 3, when chlorine dioxide dosage is 5-20mg/l, processes in water
CN-, CODcr etc. all reach relatively low degree, water quality is relatively clear, CN-, CODcr index can stably reach country integrated wastewater discharge mark
Standard and " water environment quality standard " (GB3838-2002) II class water standard.
Table 3
| Project | pH | COD | CN- |
| Before process (mg/l) | 29 | 0.086 | |
| After process (mg/l) | 8.5 | 10.2 | 0.005L |
Note: COD value is former water desired value.
Claims (7)
1. an antimony cyanogen mine wastewater treatment method Han arsenic, it is characterised in that described method comprises the steps:
(1) by carrying out the most heavy and homogenizing process after the wastewater collection of down-hole, remove bulky grain object and metalliferous mineral granule, make down-hole
Waste water quality and water quantity holding are stable；
(2) adding dearsenization antimony agent in the waste water after processing through step (1), and add oxidant A, control ph is 6～9, makes
The pollutant such as arsenic in waste water, antimony react with dearsenization antimony agent, and the insoluble compound of generation enters in water treatment residues；Dearsenization antimony agent
Dosage be 1.0～2.0g/L waste water；
(3) waste water after processing through step (2) continuously adds oxidant A, by bigger for dissolubility remaining in step (2)
Containing arsenic, the compound that changes into indissoluble containing antimony ion；Dearsenization antimony agent remaining in step (2) is converted into insoluble compound enter
In water treatment residues；Remove part cyanide simultaneously；Oxidization time 30～60min；The addition of described oxidant A be 20～
500mg/l；
(4) waste water after processing through step (3) adds flocculant and carry out coagulating treatment, then realize pulp water by sedimentation and divide
From, processing mud, to carry out building storehouse according to dangerous waste disposal requirement after dehydration temporary or sell outward and comprehensively utilize；At coagulation
The reason time 5～10min, the sedimentation time is 30～60min；The dosage of described flocculant is 0.1～1.0mg/L waste water；
(5) carrying out pH value of waste water adjustment to adding pH regulator A in the waste water that step (4) processes, dosing coagulant enters simultaneously
Row coagulating treatment, the coagulating treatment time is 10～30min, and the sedimentation time after coagulating treatment is 30～60min, control ph model
Enclose is 10～11.5；Process mud to carry out carrying out safe disposal according to dangerous waste disposal requirement after dehydration, process water the most straight
Take back for ore dressing or enter next step process；The addition of described coagulant is 0.1～1.0mg/l；
(6) add pH regulator B in the waste water that step (5) processes, waste water pH value is adjusted to 8.0～9.0；
(7) carrying out oxidation processes to adding oxidant B in the waste water that step (6) processes, the dosage of oxidant B is 5-
20mg/L waste water, oxidization time is 30～60min；
(8) will discharge after Porous Medium Adsorption filter process through the waste water that step (7) process, or it is laggard to carry out advanced treating
Row recycling.
2. the method for claim 1, it is characterised in that step (2) described dearsenization antimony agent be iron sulfate, ferrous sulfate,
The compound of one or more in bodied ferric sulfate, iron chloride, ferrous chloride, ferric nitrate.
3. the method for claim 1, it is characterised in that step (3) described oxidant A be air, oxygen, hydrogen peroxide,
One or more in ozone.
4. the method for claim 1, it is characterised in that step (4) described flocculant is polyacrylamide or 3# flocculation
Agent.
5. the method for claim 1, it is characterised in that step (5) described pH regulator A is slaked lime, lime cream, oxygen
Change the compound of one or more in magnesium, carbide slag.
6. the method for claim 1, it is characterised in that step (6) described pH regulator B be in sulphuric acid, hydrochloric acid extremely
Few one.
7. the method for claim 1, it is characterised in that step (7) described oxidant B is chlorine, hypochlorous acid, titanium dioxide
At least one in chlorine, ozone.
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