CN117509867A - Wastewater treatment agent and wastewater treatment method - Google Patents
Wastewater treatment agent and wastewater treatment method Download PDFInfo
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- CN117509867A CN117509867A CN202311494683.6A CN202311494683A CN117509867A CN 117509867 A CN117509867 A CN 117509867A CN 202311494683 A CN202311494683 A CN 202311494683A CN 117509867 A CN117509867 A CN 117509867A
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- wastewater
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- treatment agent
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 172
- 239000002351 wastewater Substances 0.000 claims abstract description 67
- 238000000034 method Methods 0.000 claims abstract description 20
- 125000001741 organic sulfur group Chemical group 0.000 claims abstract description 17
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 claims abstract description 15
- UMPKMCDVBZFQOK-UHFFFAOYSA-N potassium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[K+].[Fe+3] UMPKMCDVBZFQOK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000012990 dithiocarbamate Substances 0.000 claims abstract description 14
- 229910052979 sodium sulfide Inorganic materials 0.000 claims abstract description 13
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 150000002978 peroxides Chemical class 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 125000002091 cationic group Chemical group 0.000 claims description 13
- 229920002401 polyacrylamide Polymers 0.000 claims description 13
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 11
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 claims description 11
- 229940045872 sodium percarbonate Drugs 0.000 claims description 11
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 claims description 11
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 10
- 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 10
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 9
- 238000004381 surface treatment Methods 0.000 claims description 9
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000008394 flocculating agent Substances 0.000 claims description 5
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 4
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 30
- 150000002500 ions Chemical class 0.000 abstract description 26
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 25
- 238000005189 flocculation Methods 0.000 abstract description 14
- 230000016615 flocculation Effects 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 13
- 238000004062 sedimentation Methods 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 8
- 239000003344 environmental pollutant Substances 0.000 abstract description 7
- 231100000719 pollutant Toxicity 0.000 abstract description 7
- 230000000593 degrading effect Effects 0.000 abstract description 4
- 238000000053 physical method Methods 0.000 abstract description 2
- 235000009754 Vitis X bourquina Nutrition 0.000 abstract 1
- 235000012333 Vitis X labruscana Nutrition 0.000 abstract 1
- 240000006365 Vitis vinifera Species 0.000 abstract 1
- 235000014787 Vitis vinifera Nutrition 0.000 abstract 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 abstract 1
- 239000011692 calcium ascorbate Substances 0.000 abstract 1
- 235000010376 calcium ascorbate Nutrition 0.000 abstract 1
- 229940047036 calcium ascorbate Drugs 0.000 abstract 1
- BLORRZQTHNGFTI-ZZMNMWMASA-L calcium-L-ascorbate Chemical compound [Ca+2].OC[C@H](O)[C@H]1OC(=O)C(O)=C1[O-].OC[C@H](O)[C@H]1OC(=O)C(O)=C1[O-] BLORRZQTHNGFTI-ZZMNMWMASA-L 0.000 abstract 1
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 abstract 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 37
- 238000006243 chemical reaction Methods 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 19
- 238000002156 mixing Methods 0.000 description 18
- 238000003756 stirring Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
- 239000007800 oxidant agent Substances 0.000 description 10
- 230000001590 oxidative effect Effects 0.000 description 10
- 238000001179 sorption measurement Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 239000011651 chromium Substances 0.000 description 4
- 239000000306 component Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 208000034699 Vitreous floaters Diseases 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- -1 TDC salt Chemical class 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003904 radioactive pollution Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000004763 sulfides Chemical class 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
-
- 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
- C02F1/62—Heavy metal compounds
- C02F1/64—Heavy metal compounds of iron or manganese
-
- 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
-
- 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
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
-
- 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
- C02F2101/206—Manganese or manganese compounds
-
- 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
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- 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
- C02F2101/30—Organic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention belongs to the technical field of wastewater treatment, and discloses a wastewater treatment agent and a wastewater treatment method. The wastewater treatment agent disclosed by the invention comprises the following raw materials: grape granules, sodium carboxymethyl cellulose and calcium ascorbate. The wastewater treatment agent comprises a treatment agent A, a treatment agent B and a treatment agent C; the treating agent A comprises at least one of organic sulfur polymer, sodium sulfide and dithiocarbamate; the treating agent B comprises at least one of potassium ferrate and peroxide; treatment C included a flocculant. The method provided by the invention can be used for degrading organic matters and inorganic matters and other pollutants in the wastewater by a chemical and physical method, and simultaneously removing the pollutants by flocculation sedimentation, so that COD, ammonia nitrogen and heavy metal ions in the wastewater can be simultaneously degraded and removed in one step, the wastewater does not need to be subjected to quality division and independent treatment, the removal process is simple and not complicated, and the wastewater treatment efficiency is high.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a wastewater treatment agent and a wastewater treatment method.
Background
The aluminum profile production wastewater mainly originates from various surface treatment production processes, including anodic oxidation process (degreasing, acidity, oxidation and the like), coloring process wastewater, dyeing process wastewater, electrophoresis process wastewater and the like. The industrial wastewater contains a large amount of heavy metal ions (such as nickel, chromium and the like), acid-base substances, a small amount of grease, organic complex and the like, and the existing wastewater treatment process needs to be treated separately in a mass-division and flow-division mode, so that the treatment process is complex and tedious, the wastewater treatment efficiency is reduced, and the wastewater treatment cost is increased.
Therefore, development of a method for comprehensively treating the wastewater generated in the surface treatment of the aluminum profile and improvement of the wastewater treatment efficiency have become urgent.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the prior art described above. Therefore, the invention provides the wastewater treatment agent and the wastewater treatment method, which can simultaneously degrade and remove COD, ammonia nitrogen and heavy metal ions in wastewater in one step, and has simple and not complicated removal process and high wastewater treatment efficiency.
The first aspect of the invention provides a wastewater treatment agent, which comprises a treatment agent A, a treatment agent B and a treatment agent C; the treating agent A comprises at least one of organic sulfur polymer, sodium sulfide and dithiocarbamate; the treating agent B comprises at least one of potassium ferrate and peroxide; the treating agent C comprises a flocculating agent.
According to some embodiments of the invention, the treating agent A comprises, in parts by mass, 30-50 parts of an organic sulfur polymer, 5-10 parts of sodium sulfide and 5-10 parts of a dithiocarbamate.
According to some embodiments of the invention, the peroxide comprises at least one of sodium persulfate, sodium peroxide, and sodium percarbonate.
According to some embodiments of the invention, the treating agent B comprises 15-20 parts by mass of potassium ferrate, 15-20 parts by mass of sodium persulfate, 5-10 parts by mass of sodium peroxide and 5-10 parts by mass of sodium percarbonate.
According to some embodiments of the invention, the flocculant comprises at least one of polyaluminosilicate, polyaluminosulfate, and cationic polyacrylamide.
According to some embodiments of the invention, the treating agent C comprises 20-30 parts by mass of polyaluminosilicate iron, 5-15 parts by mass of polyaluminium sulfate and 1-2 parts by mass of cationic polyacrylamide.
The second aspect of the invention provides application of the wastewater treatment agent in purifying aluminum profile surface treatment wastewater.
According to some embodiments of the invention, the aluminum profile surface treatment wastewater contains at least one of COD, ammonia nitrogen and heavy metal ions.
The third aspect of the invention provides a method for treating wastewater by using the wastewater treatment agent, which comprises the following steps:
and sequentially adding the treating agent A, the treating agent B and the treating agent C into the wastewater, and filtering.
According to some embodiments of the invention, the interval between sequential addition of treatment agent a, treatment agent B and treatment agent C to the wastewater is 10-60min. Furthermore, the interval time between the treatment agent A, the treatment agent B and the treatment agent C which are sequentially added into the wastewater is 20-40min.
According to some embodiments of the invention, the amount of treatment agent A is 0.5-1g/L, the amount of treatment agent B is 4-6g/L, and the amount of treatment agent C is 2-3g/L.
The principle of the wastewater treatment agent for purifying wastewater is as follows:
firstly, adding a treating agent A into the wastewater to be treated to remove harmful heavy metal ions. The treating agent A mainly comprises heavy metal ion capturing agent compounds, and the heavy metal capturing agent is a chemical agent which is strongly chelated with heavy metal ions, and can be used for being matched with Cu in wastewater in a wide pH value range at normal temperature 2+ 、Cd 2+ 、Hg 2+ 、Pb 2+ 、Mn 2+ 、Ni 2+ 、Zn 2+ 、Cr 3+ The chemical reaction of various heavy metal ions is carried out, and flocculent precipitate which is insoluble, low in water content and easy to filter and remove is rapidly generated in a short time, so that the chemical for removing the heavy metal ions from water is called as a heavy metal trapping agent. The treating agent A mainly acts to capture heavy metal ions in the wastewater by reaction and precipitate the heavy metal ions. Wherein the organic sulfur polymer is an environmentally friendly, nontoxic and harmless remover capable of removing most monovalent and divalent heavy metal ions in aqueous solution, and can be combined with Fe 2+ 、Fe 3+ 、Ni 2+ 、Pb 2+ 、Cu 2+ 、Ag + 、Zn 2+ 、Cd 2+ 、Hg 2+ 、Cr 3+ The plasma forms stable compounds to precipitate out, thereby achieving the purpose of removing heavy metal ions. The invention selects the organic sulfur polymer TMT15, and the precipitate formed after the TMT15 treatment can not be dissolved by substances such as rainwater and the like, so that the secondary pollution environmental problem is avoided. Because general metal sulfides are insoluble substances except alkali metals and alkaline earth metals, metal ions in sodium sulfide reaction wastewater can be utilized to precipitate the metal ions, and the metal ions are matched with the organic sulfur polymer TMT15 for use, so that more different types of metal ions in the reaction precipitation wastewater can be ensured, and other heavy metal ions missing from the organic sulfur polymer TMT15 can be precipitated by the reaction as much as possible. Dithiocarbamate (DTCR) is a long-chain polymer containing a large number of polar groups, the sulfur ion atoms in the polar groups have larger radius and negative charge, are easy to polarize and deform, generate a negative electric field, capture cations, and tend to bond to form indissoluble aminodithioformate (TDC salt) to separate out, and the molecules of indissoluble chelate salt can reach millions, evenTens of millions of metal salts are produced in water, and have good flocculation and sedimentation effects under the action of gravity. The organic sulfur polymer TMT15, sodium sulfide and dithiocarbamate are matched according to a certain proportion, and can react together with Hg in wastewater at normal temperature 2+ 、Cd 2+ 、Cu 2+ 、Pb 2+ 、Mn 2+ 、Ni 2+ 、Zn 2+ 、Cr 3+ And the heavy metal ions react rapidly to generate insoluble chelating salt, and then the insoluble chelating salt is matched with organic and inorganic flocculants added subsequently to form flocculent precipitate, so that the purposes of chelating the precipitate and capturing and removing heavy metals are achieved.
And secondly, after the first step of reaction, adding a treating agent B, and degrading organic components in the wastewater by reaction to degrade COD and ammonia nitrogen in the wastewater. The treating agent B is formed by compounding a safe and environment-friendly strong oxidant compound, and is mainly used for degrading COD and ammonia nitrogen in the wastewater through oxidation-reduction reaction. The organic component content in the wastewater of the surface treatment process of the aluminum product factory is higher, so that COD and ammonia nitrogen in the generated wastewater are seriously out of standard, and the COD and ammonia nitrogen reaction is removed by utilizing a safe and efficient strong oxidant, which is necessary to be done after the precipitation reaction of harmful metal ions is completed. The core oxidant is potassium ferrate, and the auxiliary oxidant is an oxidant containing peroxy groups. Potassium ferrate is a high-efficiency non-chlorine strong oxidation water treatment agent and is widely applied to the fields of environmental treatment such as water purification, sewage treatment, wastewater treatment, river and lake protection and the like. The potassium ferrate can efficiently remove pollutants such as organic matters, ammonia nitrogen, nitrite, cyanide, heavy metals and the like in water, and is particularly suitable for treating deep-colored and nondegradable wastewater. Sodium persulfate is a strong oxidant, is safe and nontoxic when applied to water treatment, can react to remove organic matters and pollutants in water, has strong oxidation property, can rapidly degrade organic waste, effectively remove organic impurities in wastewater and remove peculiar smell of the wastewater, and is a good auxiliary oxidant in a compound formula. Sodium peroxide is a strong oxidant with high oxidizing and reducing properties, is mainly used as bleaching agent, oxidizing agent, desulfurizing agent, disinfectant and the like, can be used as desulfurizing agent in wastewater treatment to remove sulfides in water, and can also remove superfluous and excessive sulfur-containing compounds in the first step of reaction to remove heavy metal ions, so that the content of pollutants in wastewater is reduced. Sodium percarbonate is commonly called solid hydrogen peroxide, is a strong oxidant, has a strong decontamination and cleaning effect in wastewater treatment, can bleach wastewater while removing heavy metal ions and organic pollutants in wastewater, ensures that the color of the wastewater after treatment is colorless and clear, and can well assist potassium ferrate to treat wastewater containing organic matters.
And thirdly, after the second reaction step, adding a treating agent C, flocculating and settling floating dirt, adsorbing heavy metal ions and organic components in settled wastewater, filtering, further thoroughly removing heavy metal ions, COD, ammonia nitrogen and other emission limiting substances in the wastewater, and finally obtaining colorless, clear and transparent treated water which reaches the emission standard. The treating agent C not only has flocculation sedimentation effect, but also has comprehensive effect of capturing heavy metal ions, COD and ammonia nitrogen, further plays a supplementary role on the treating agent A and the treating agent B, and has good effects of checking and repairing leakage as the final step of wastewater treatment, namely, the treating agent C is used for treating the wastewater, namely, the treating agent A and the treating agent B react and then the heavy metal ions, organic components, greasy dirt, dirt and the like remained in the wastewater are physically adsorbed, particles are quickly settled after being adsorbed and become large, and finally, the filtering and the clearing are complete. The core component of the treating agent C is polymeric aluminum ferric silicate, which is a novel water-soluble polyelectrolyte, is mainly used for purifying drinking water, and can also be used for special water quality treatment of water supply, cadmium removal, fluorine removal, radioactive pollution removal, oil slick removal and the like. The polymeric aluminum sulfate and the polymeric ferric sulfate are commonly used inorganic flocculating agents in the traditional water treatment, and are matched with polymeric aluminum ferric silicate to play a role in assisting flocculation sedimentation, and the inorganic flocculating agents such as the polymeric ferric sulfate and the polymeric aluminum sulfate have remarkable effects of removing turbidity, decoloring, deoiling, dehydrating, degerming, deodorizing, removing algae, removing COD, BOD, heavy metal ions and the like in water. The polymeric aluminum ferric silicate, the polymeric ferric sulfate and the polymeric aluminum sulfate are matched according to a certain proportion for use, so that the high-turbidity sewage purification effect is excellent, the suspended solid content in water can be effectively reduced during treatment, the turbidity of the water is reduced, and the effect of reducing the trihalomethane precursor in the water can be achieved, so that the total carbon content (TOC) in the water is reduced. The cationic polyacrylamide is a linear high molecular compound, and can be used for carrying out affinity and adsorption with a plurality of substances to form hydrogen bonds because of various active groups, is a colloid with negative charges, has the effects of turbidity removal, decolorization, adsorption, flocculation and the like, and is suitable for treating wastewater with higher organic matter content in the surface treatment process of an aluminum profile factory. The cationic polyacrylamide has excellent clarifying and purifying effects, sedimentation promoting effects and filtering promoting effects, and the cationic polyacrylamide can fully meet the requirements on wastewater purification treatment, sludge concentration and dehydration and the like by being added in inorganic flocculation systems such as polyaluminium ferric silicate and the like, and can well assist the adsorption flocculation and sedimentation decontamination of the polyaluminium ferric silicate, the polyaluminium ferric sulfate and the polyaluminium sulfate.
If the treating agent B is added firstly, and the treating agent A is added later, the original COD, ammonia nitrogen, organic impurities and the like in the wastewater are oxidized and reacted through the treating agent B firstly, but after the subsequent treatment agent A is added, the organic impurities such as organic sulfur and the like remained in the wastewater after the treatment agent A is reacted can not be reacted and removed, a small amount of organic residues are generated in the subsequent detection of the wastewater, and the detection of COD, ammonia nitrogen and the like has the risk of exceeding the standard; this risk is mainly brought about by the reaction residues of the addition of the treatment agent a. According to the invention, the treatment agent A is added first and then the treatment agent B is added for oxidation reaction, so that the treatment agent B can not only oxidize and react the original COD, ammonia nitrogen and the like in the wastewater, but also oxidize and react the COD, ammonia nitrogen and the like generated by the residue of the treatment agent A, and the risk of exceeding the standard of the COD, the ammonia nitrogen and the like is avoided. If the treating agent C is added first, then the treating agent A and the treating agent B are added, the wastewater is relatively clarified after the original solid floaters and the like in the wastewater are flocculated and settled by the treating agent C, but a certain amount of solid precipitates and floaters are generated after the treating agents A and B are added for reaction, the wastewater becomes turbid and not clarified, and the subsequent filtration cannot clarify the wastewater.
Compared with the prior art, the invention has the following beneficial effects:
the wastewater treatment agent comprises the treatment agent A, the treatment agent B and the treatment agent C, organic matters, inorganic matters and other pollutants in the wastewater are degraded through a chemical and physical method, and simultaneously flocculation sedimentation is carried out to remove the pollutants, so that COD, ammonia nitrogen and heavy metal ions in the wastewater can be simultaneously degraded and removed in one step, the wastewater is not required to be subjected to quality-division and independent treatment, the removal process is simple and not complicated, and the wastewater treatment efficiency is high.
According to the invention, the three treating agents A, B and C adopted by the invention have different removing functions and can interact, so that heavy metal ions, COD and ammonia nitrogen are removed without separating tanks, the treating agent A, B and C are sequentially added into one wastewater tank, heavy metal ions, ammonia nitrogen and organic pollutants are removed through the three treating agents in a third step, the COD, ammonia nitrogen and organic pollutants are removed through oxidation reaction, and finally the three treating agents are filtered after flocculation sedimentation, no mutual interference exists among the three treating agents, the residual surplus treating agents in the treatment process can be removed through the next step of reaction, and finally the surplus treating agents after flocculation absorption can be filtered after sedimentation; the treating agent A, the treating agent B and the treating agent C have independent and combined effects, have good comprehensive effects of removing heavy metal ions and degrading COD and ammonia nitrogen, the nickel content of the treated wastewater is lower than 0.02mg/L, the COD is lower than 50mg/L, the ammonia nitrogen is lower than 30mg/L, the water discharge standard of an aluminum plant is achieved, and the treated wastewater has good treatment effect, no residue and environmental protection.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The starting materials, reagents or apparatus used in the examples are all commercially available from conventional sources or may be obtained by methods known in the art unless otherwise specified. Unless otherwise indicated, assays or testing methods are routine in the art.
Example 1
A wastewater treatment agent comprises a treatment agent A, a treatment agent B and a treatment agent C; wherein, treating agent A is prepared by mixing 50 parts of organic sulfur polymer TMT15, 10 parts of sodium sulfide, 10 parts of dithiocarbamate and 30 parts of water, stirring and dissolving, treating agent B is prepared by mixing 20 parts of potassium ferrate, 20 parts of sodium persulfate, 10 parts of sodium peroxide, 10 parts of sodium percarbonate and 40 parts of water, stirring and dissolving, and treating agent C is prepared by mixing 30 parts of polyaluminosilicate iron, 15 parts of polyaluminium sulfate, 15 parts of polymeric ferric sulfate, 2 parts of cationic polyacrylamide and 38 parts of water, stirring and dissolving.
Example 2
A wastewater treatment agent comprises a treatment agent A, a treatment agent B and a treatment agent C; wherein, treating agent A is prepared by mixing 30 parts of organic sulfur polymer TMT15, 5 parts of sodium sulfide, 5 parts of dithiocarbamate and 60 parts of water, stirring and dissolving, treating agent B is prepared by mixing 15 parts of potassium ferrate, 15 parts of sodium persulfate, 5 parts of sodium peroxide, 5 parts of sodium percarbonate and 60 parts of water, stirring and dissolving, and treating agent C is prepared by mixing 20 parts of polyaluminosilicate iron, 5 parts of polyaluminium sulfate, 5 parts of polymeric ferric sulfate, 1 part of cationic polyacrylamide and 69 parts of water, stirring and dissolving.
Example 3
A wastewater treatment agent comprises a treatment agent A, a treatment agent B and a treatment agent C; wherein, treating agent A is prepared by mixing 40 parts of organic sulfur polymer TMT15, 8 parts of sodium sulfide, 8 parts of dithiocarbamate and 44 parts of water, stirring and dissolving, treating agent B is prepared by mixing 18 parts of potassium ferrate, 18 parts of sodium persulfate, 8 parts of sodium peroxide, 8 parts of sodium percarbonate and 48 parts of water, stirring and dissolving, and treating agent C is prepared by mixing 25 parts of polyaluminosilicate iron, 10 parts of polyaluminium sulfate, 1.5 parts of cationic polyacrylamide and 53.5 parts of water, stirring and dissolving.
Comparative example 1 (differing from example 1 in the absence of the organic sulfur polymer TMT 15)
A wastewater treatment agent comprises a treatment agent A, a treatment agent B and a treatment agent C; wherein, treating agent A is prepared by mixing 10 parts of sodium sulfide, 10 parts of dithiocarbamate and 80 parts of water, stirring and dissolving, treating agent B is prepared by mixing 20 parts of potassium ferrate, 20 parts of sodium persulfate, 10 parts of sodium peroxide, 10 parts of sodium percarbonate and 40 parts of water, stirring and dissolving, and treating agent C is prepared by mixing 30 parts of polyaluminum ferric silicate, 15 parts of polyaluminum sulfate, 15 parts of polyaluminum ferric sulfate, 2 parts of cationic polyacrylamide and 38 parts of water, stirring and dissolving.
Comparative example 2 (differing from example 1 in the absence of potassium ferrate)
A wastewater treatment agent comprises a treatment agent A, a treatment agent B and a treatment agent C; wherein, treating agent A is prepared by mixing 50 parts of organic sulfur polymer TMT15, 10 parts of sodium sulfide, 10 parts of dithiocarbamate and 30 parts of water, stirring and dissolving, treating agent B is prepared by mixing 20 parts of sodium persulfate, 10 parts of sodium peroxide, 10 parts of sodium percarbonate and 60 parts of water, stirring and dissolving, and treating agent C is prepared by mixing 30 parts of polyaluminum ferric silicate, 15 parts of polyaluminum sulfate, 15 parts of polyaluminum ferric sulfate, 2 parts of cationic polyacrylamide and 38 parts of water, stirring and dissolving.
Comparative example 3 (differing from example 1 in the absence of polyaluminosilicate iron)
A wastewater treatment agent comprises a treatment agent A, a treatment agent B and a treatment agent C; wherein, treating agent A is prepared by mixing 50 parts of organic sulfur polymer TMT15, 10 parts of sodium sulfide, 10 parts of dithiocarbamate and 30 parts of water, stirring and dissolving, treating agent B is prepared by mixing 20 parts of potassium ferrate, 20 parts of sodium persulfate, 10 parts of sodium peroxide, 10 parts of sodium percarbonate and 40 parts of water, stirring and dissolving, and treating agent C is prepared by mixing 15 parts of polyaluminum sulfate, 15 parts of polymeric ferric sulfate, 2 parts of cationic polyacrylamide and 68 parts of water, stirring and dissolving.
Purification effect test of wastewater treatment agent
Taking wastewater at the discharge outlet of a surface treatment workshop of an aluminum product factory in Guangdong berg, measuring the nickel content to be 1.73mg/L by using a visible spectrophotometer, and measuring the COD to be 483.61mg/L and the ammonia nitrogen to be 329.75mg/L by using a CNPN-401 COD, ammonia nitrogen, total phosphorus and total nitrogen measuring instrument. The wastewater treatment reactions were carried out with the treatment agents of example 1 and comparative examples 1-3, respectively. Four cups of this aluminum plant surface treatment shop drain wastewater were taken, 1L, labeled (1), (2), (3), (4), (1) treated with the treatment agent of example 1, (2) treated with the treatment agent of comparative example 1, (3) treated with the treatment agent of comparative example 2, and (4) treated with the treatment agent of comparative example 3. The specific process for treating the wastewater comprises the following steps:
1. adding 1g/L of the treating agent A of the example 1 into the (1) for standing reaction for 30 minutes, adding 6g/L of the treating agent B of the example 1 for standing reaction for 30 minutes, finally adding 3g/L of the treating agent C of the example 1 for adsorption flocculation for 2 hours, and filtering;
2. adding 1g/L of the treating agent A of the comparative example 1 into the (2) for standing reaction for 30 minutes, adding 6g/L of the treating agent B of the comparative example 1 for standing reaction for 30 minutes, finally adding 3g/L of the treating agent C of the comparative example 1 for adsorption flocculation for 2 hours, and filtering;
3. adding 1g/L of the treating agent A of the comparative example 2 into the (3) for standing reaction for 30 minutes, adding 6g/L of the treating agent B of the comparative example 2 for standing reaction for 30 minutes, finally adding 3g/L of the treating agent C of the comparative example 2 for adsorption flocculation for 2 hours, and filtering;
4. after 1g/L of the treating agent A of comparative example 3 was added to (4) and allowed to stand still for 30 minutes, 6g/L of the treating agent B of comparative example 3 was added thereto and allowed to stand still for 30 minutes, and finally 3g/L of the treating agent C of comparative example 3 was added thereto for adsorption flocculation for 2 hours, followed by filtration.
The wastewater treated as described above was examined, and the examination results are shown in table 1.
TABLE 1
| Group of | Nickel content (mg/L) | COD content (mg/L) | Ammonia nitrogen content (mg/L) |
| Example 1 | 0.013 | 36.27 | 19.13 |
| Comparative example 1 | 1.18 | 41.02 | 21.37 |
| Comparative example 2 | 0.017 | 175.27 | 136.82 |
| Comparative example 3 | 0.061 | 76.38 | 62.13 |
As shown in Table 1, the wastewater treated by the wastewater treatment agent of example 1 of the invention has nickel content lower than 0.02mg/L, COD lower than 50mg/L, ammonia nitrogen lower than 30mg/L, and all indexes can reach the emission standard. In addition, the effect of treating wastewater by adopting the wastewater treatment agents of the embodiment 2 and the embodiment 3 of the invention is not obviously different from that of the embodiment 1, and each index can reach the discharge standard.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and these are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (10)
1. A wastewater treatment agent is characterized by comprising a treatment agent A, a treatment agent B and a treatment agent C; the treating agent A comprises at least one of organic sulfur polymer, sodium sulfide and dithiocarbamate; the treating agent B comprises at least one of potassium ferrate and peroxide; the treating agent C comprises a flocculating agent.
2. The wastewater treatment agent according to claim 1, wherein the treatment agent a comprises, in parts by mass, 30-50 parts of an organic sulfur polymer, 5-10 parts of sodium sulfide and 5-10 parts of dithiocarbamate.
3. The wastewater treatment agent of claim 1, wherein the peroxide comprises at least one of sodium persulfate, sodium peroxide, and sodium percarbonate.
4. The wastewater treatment agent according to claim 3, wherein the treatment agent B comprises 15-20 parts by mass of potassium ferrate, 15-20 parts by mass of sodium persulfate, 5-10 parts by mass of sodium peroxide and 5-10 parts by mass of sodium percarbonate.
5. The wastewater treatment agent of claim 1, wherein the flocculant comprises at least one of polymeric aluminum ferric silicate, polymeric aluminum sulfate, polymeric ferric sulfate, and cationic polyacrylamide.
6. The wastewater treatment agent according to claim 5, wherein the treatment agent C comprises, by mass, 20-30 parts of polyaluminosilicate iron, 5-15 parts of polyaluminium sulfate and 1-2 parts of cationic polyacrylamide.
7. The use of the wastewater treatment agent according to any one of claims 1 to 6 for purifying aluminum profile surface treatment wastewater.
8. A method for treating wastewater using the wastewater treatment agent according to any one of claims 1 to 6, comprising the steps of:
and sequentially adding the treating agent A, the treating agent B and the treating agent C into the wastewater, and filtering.
9. The method for treating wastewater according to claim 8, wherein the interval time between sequentially adding the treating agent a, the treating agent B and the treating agent C to the wastewater is 10 to 60 minutes.
10. The method for treating wastewater according to claim 8, wherein the amount of the treating agent A added is 0.5 to 1g/L, the amount of the treating agent B added is 4 to 6g/L, and the amount of the treating agent C added is 2 to 3g/L.
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