CN114702177A - Method for advanced oxidation treatment of sewage by BDD electrode - Google Patents
Method for advanced oxidation treatment of sewage by BDD electrode Download PDFInfo
- Publication number
- CN114702177A CN114702177A CN202210314180.5A CN202210314180A CN114702177A CN 114702177 A CN114702177 A CN 114702177A CN 202210314180 A CN202210314180 A CN 202210314180A CN 114702177 A CN114702177 A CN 114702177A
- Authority
- CN
- China
- Prior art keywords
- reaction
- wastewater
- bdd electrode
- electric flocculation
- bdd
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 67
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 30
- 230000003647 oxidation Effects 0.000 title claims abstract description 29
- 239000010865 sewage Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 230000008569 process Effects 0.000 claims abstract description 36
- 239000002351 wastewater Substances 0.000 claims abstract description 33
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002910 solid waste Substances 0.000 claims abstract description 13
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 12
- 239000012528 membrane Substances 0.000 claims abstract description 10
- 238000005189 flocculation Methods 0.000 claims description 43
- 230000016615 flocculation Effects 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 claims description 38
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 24
- 239000006228 supernatant Substances 0.000 claims description 24
- 238000004062 sedimentation Methods 0.000 claims description 23
- 239000000178 monomer Substances 0.000 claims description 19
- 150000003233 pyrroles Chemical class 0.000 claims description 19
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- 230000001112 coagulating effect Effects 0.000 claims description 18
- 238000005868 electrolysis reaction Methods 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 239000003814 drug Substances 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 13
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 12
- 230000001590 oxidative effect Effects 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 12
- 238000007667 floating Methods 0.000 claims description 8
- 238000005188 flotation Methods 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 238000005345 coagulation Methods 0.000 claims description 7
- 230000015271 coagulation Effects 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 7
- 238000003487 electrochemical reaction Methods 0.000 claims description 7
- FRDZTMZLPMAUEW-UHFFFAOYSA-N 1-amino-3-prop-1-enylthiourea Chemical compound C(=CC)NC(NN)=S FRDZTMZLPMAUEW-UHFFFAOYSA-N 0.000 claims description 6
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- KFOZNPPBKHYHQD-UHFFFAOYSA-N ethenesulfonyl chloride Chemical compound ClS(=O)(=O)C=C KFOZNPPBKHYHQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- 239000011541 reaction mixture Substances 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 6
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 235000013399 edible fruits Nutrition 0.000 claims description 4
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052804 chromium Inorganic materials 0.000 abstract description 7
- 239000011651 chromium Substances 0.000 abstract description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000001569 carbon dioxide Substances 0.000 abstract description 2
- 238000012668 chain scission Methods 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 abstract description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 abstract description 2
- 238000007142 ring opening reaction Methods 0.000 abstract description 2
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 9
- 230000001699 photocatalysis Effects 0.000 description 8
- 238000002835 absorbance Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 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 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 4
- IMBKASBLAKCLEM-UHFFFAOYSA-L ferrous ammonium sulfate (anhydrous) Chemical compound [NH4+].[NH4+].[Fe+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O IMBKASBLAKCLEM-UHFFFAOYSA-L 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 229940010514 ammonium ferrous sulfate Drugs 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000009297 electrocoagulation Methods 0.000 description 3
- 238000003306 harvesting Methods 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 239000012086 standard solution Substances 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 description 2
- 229940074439 potassium sodium tartrate Drugs 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 235000011006 sodium potassium tartrate Nutrition 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 244000088401 Pyrus pyrifolia Species 0.000 description 1
- 235000001630 Pyrus pyrifolia var culta Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 238000009835 boiling Methods 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
- 238000011088 calibration curve Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000009614 chemical analysis method Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 231100001234 toxic pollutant Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/465—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F1/72—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
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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)
- Water Treatment By Electricity Or Magnetism (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to the field of environmental protection, in particular to a method for advanced oxidation treatment of sewage by a BDD electrode; the BDD electrode membrane group has extremely high oxidation potential and extremely high oxidability, so that organic matters are subjected to ring-opening cracking and chain scission oxidation, and finally, the organic matters are thoroughly oxidized into carbon dioxide and water; the method does not generate a large amount of solid wastes in the traditional process, so that the subsequent treatment cost is greatly reduced; the treated wastewater: COD 420mg/L, ammonia nitrogen 52mg/L, total nickel 0.4mg/L, total chromium 0.1mg/L, pH is neutral, the index has completely reached the discharge standard, has realized the clean purpose of producing.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a method for advanced oxidation treatment of sewage by a BDD electrode.
Background
With the acceleration of the industrialization process, the living standard of people is improved, but the water pollution condition is getting more serious, the stability of the ecological system is seriously damaged, and the health of people is harmed. One of the main sources of water pollution is the pollution of industrial wastewater, the industrial wastewater accounts for more than 40% of the total wastewater discharge amount, according to the investigation, in 2008, the discharge amount of the industrial wastewater in China is 2.17 x 1010 tons, and the environmental condition publication shows that in 2007, the discharge amount of the chemical oxygen demand reaches 1381.8 ten thousand tons, and the discharge amount of the ammonia nitrogen reaches 132.3 ten thousand tons. Among them, the high concentration degradation-resistant waste water is a key research object of waste water due to its high concentration, large pollution and difficult treatment.
The conventional sewage treatment technologies can be classified into physical treatment, chemical treatment, physicochemical treatment, and biological treatment according to the principles employed. The treatment methods have respective application range and advantages, and have some defects. In particular, sewage discharged from food industry (food, brewing and sugar making), light industry (leather and paper making), textile industry (textile and printing and dyeing), petrochemical industry (petroleum refining, fine chemical industry, medicine and pesticide) and the like contains a large amount of toxic organic pollutants which are difficult to biodegrade, and the traditional water treatment technology is difficult to treat due to the diversity, complexity and difficult degradability of the components. Although the membrane separation technology, ozone oxidation and photocatalytic oxidation, which have been developed in recent years, can treat toxic and nonbiodegradable organic wastewater within a certain range, they are expensive and have a limited range of applications. Therefore, the research on the technology capable of effectively treating the high-concentration toxic organic wastewater difficult to biodegrade becomes a research hotspot of the academic circles at home and abroad.
CN 200580033906.2: the invention relates to a wastewater COD treatment process for anodic oxidation by using two different types of anodes in combination with a suitable distribution current. The first type of anode is preferably based on diamond doped synthetic diamond and the second type of anode is an anode with a high oxygen overvoltage preferably containing oxides of tin and antimony.
CN 200810103616.6: the invention relates to a wastewater treatment method and a device by combining electrochemical degradation and photocatalytic oxidation technologies by taking a diamond film electrode as an anode. The combined device consists of a flow type electrolytic tank and a photocatalytic reactor, pollutants firstly undergo electrocatalytic oxidation reaction at the anode of the flow type electrolytic tank, and electrolyzed water enters the photocatalytic reactor for further degradation. By combining the two processes, the current efficiency reduction caused by the oxygen evolution side reaction of the electrochemical part can be improved, and because the oxygen evolved by the electrochemical part is a good capture agent for photo-generated electrons of the photocatalytic part, the separation efficiency of the photo-generated electrons and holes can be improved, and the catalytic degradation capability of the photocatalytic part can be improved. Meanwhile, the on-off of each part of the combined device can be controlled, and a proper operation mode can be selected according to the difference of the types and the concentrations of pollutants in the wastewater, such as a single electrochemical method, a single photocatalytic method, a combined electrochemical and photocatalytic method and the like.
CN 201080029442.9: the wastewater treatment plant according to the invention has an electrocoagulation unit for removing pollutants and having at least one anode and at least one cathode and an electrooxidation unit for oxidizing pollutants and having at least one anode and at least one cathode, wherein an oxidizing agent is electrochemically generated. Depending on the type of wastewater, the apparatus may have an electroflotation unit between the electrocoagulation unit and the electrooxidation unit. The apparatus also has an oxidant removal unit that may have a metal ion releasing electrode for reacting with and removing residual oxidant. In some cases, a portion of the effluent from the oxidant removal unit may be recycled to the electrocoagulation unit to increase efficiency.
In the prior art and patents, the electrolytic water treatment device has low current efficiency, insufficient stability, short service life, high electrode material cost and complex electrode preparation process, and the development of electrode materials is limited, so that the industrial application of the electro-catalytic wastewater treatment technology is limited, and the research of novel electrode materials needs to be further enhanced.
Disclosure of Invention
In order to solve the problems, the invention provides a method for treating sewage by advanced oxidation of a BDD electrode.
A method for treating sewage by advanced oxidation of a BDD electrode comprises the following process flows:
s1 coagulating sedimentation process: the equipment comprises an electric flocculation device, an air compressor, a cold dryer and an ozone generator; the water in the raw water tank enters the electric flocculation device through a pump; air is processed by an air compressor, a cold dryer and an ozone generator to prepare ozone, the ozone enters the electric flocculation device from the bottom of the electric flocculation device through a micro air flotation device, and floating oil, suspended matters and total nickel are removed through electrolysis, emulsion breaking and coagulation; removing scum to obtain supernatant;
s2 electrochemical reaction: mixing ofThe supernatant after coagulation and precipitation enters an electrochemical BDD advanced oxidation membrane group, a BDD electrode is used as an anode, the initial pH is adjusted to be 7-9, and the current density is controlled to be 70-130 mA/cm2Controlling the reaction temperature to be 30-50 ℃, and electrolyzing the supernatant for 4-5 hours;
after separation and precipitation, the supernatant fluid is discharged after reaching the standard, and the precipitate in the sedimentation tank is removed to a solid waste collection tank; discharging the effluent after the coagulating sedimentation pretreatment into a new reservoir;
furthermore, the effective dose of the high-efficiency ionic flocculant is added in the process of the electric flocculation,
the whole process is provided with a control system, personnel management is needed for medicine adding, pollution discharge and water quality monitoring, the equipment is controlled by PLC programming, and automatic operation control can be realized by only setting corresponding parameters.
The micro-air-flotation device is used for removing suspended matters in the wastewater discharged by the flocculation reaction device and reducing the difficulty of subsequent treatment, and is of a skid-mounted type, the volume of the water tank is 0.5-3m3, and the flow rate of compressed air is as follows: 3-6m, air pressure: 0.4-0.8Mpa, gas production flow: 0.5-4m, ozone concentration: 120-150 mg/L.
The equipment floor area of the electrochemical reactor is as follows: 1-4m2, 1-3 electrolytic barrels, and the effective volume is 1-4m for carrying out thin fruit trees; the electrolysis time is set to be 30-90 min; and 2-5KW of power distribution.
The power of the aluminum electrode of the electric flocculation device is 1-4 KW; when the water quality of the front end reaches the standard, the machine can not be started.
The number of the solid waste collecting barrels is as follows: 1-3, effective volume: and (5) carrying out fruit trees from 1 to 6 m.
The control system adopts a Siemens control system, is customized and programmed, and is responsible for field inspection, medicament supplement and periodic pollution discharge work.
The preparation method of the high-efficiency ionic flocculant comprises the following steps:
according to the mass portion, 20-30 portions of acrylamide, 0.5-5 portions of modified pyrrole monomer and 0.05-1.2 portions of 4-propenyl thiosemicarbazide are added into a reaction kettle, 50-70 portions of thioglycollic acid, 120-140 portions of tetrahydrofuran, 5-11 portions of triethylamine and 50-60 ℃ are added for reaction for 6-10h under the protection of high-purity nitrogen, and the reaction mixture is decompressed and distilled to remove the tetrahydrofuran, so that the high-efficiency ionic flocculant is obtained.
The preparation method of the modified pyrrole monomer comprises the following steps:
adding 4-17 parts of sodium metal and 10-16 parts of pyrrole into 70-100 parts of toluene according to the mass parts under the protection of nitrogen, controlling the temperature to be 70-80 ℃, and stirring for reaction for 2-4 hours; and (3) cooling to room temperature, slowly adding 15-22 parts of vinyl sulfonyl chloride into the reaction system, and after the addition is finished, controlling the temperature to be 60-70 ℃, and stirring for reaction for 1-3 hours to obtain the modified pyrrole monomer.
The reaction mechanism is as follows:
the electrolytic oxidation process is that the high oxidation-reduction potential of the electrode material is utilized, and the BDD electrode membrane group has extremely high oxidation potential and extremely high oxidizability, so that organic matters are subjected to ring opening cracking and chain scission by oxidation, and finally, the organic matters are thoroughly oxidized into carbon dioxide and water; the ammonia nitrogen is finally discharged in the form of nitrogen, and a small amount of nitrate is remained in the water.
The technical effects are as follows:
the invention discloses a method for advanced oxidation treatment of sewage by a BDD electrode, which has the following advantages:
(1) the treatment range is wide; as long as the oxygen evolution potential and the catalytic capability of the electrolysis electrode can meet the requirements, almost all organic matters can be degraded by applying the electrolysis water treatment technology;
(2) the application is flexible; the method can be used as a separate treatment process, and can also be combined with other treatment processes, for example, as a pretreatment, organic matters or biological toxic pollutants which are difficult to degrade can be converted into biodegradable substances, so that the biodegradability of the wastewater is improved;
(3) the secondary pollution is small; OH generated in the electrochemical process can be directly reacted with organic pollutants in the wastewater without selection to degrade the organic pollutants into CO2、H2O and simple organic matters, and little or no secondary pollution is generated; electrons are the main reactant of electrochemical reaction, and the electron transfer is only carried out between the electrode and the organic waste component without adding any oxidant or reducing agent, thereby avoiding secondary pollution caused by adding chemical agentsAnd can also make the electrode reaction have high selectivity by controlling the electric potential, prevent the side reaction from happening;
(4) the controllability is good; the electrochemical process is generally carried out at normal temperature and normal pressure, and the control parameters are current and potential, so that the control and the measurement are easy; therefore, the controllable degree and even the automatic control level of the whole process are higher, and the automatic control is easy to realize;
(5) the cost is low; the electrochemical system has relatively simple equipment, a reasonably designed system, higher energy efficiency and low operation and maintenance cost; meanwhile, as a clean treatment process, the equipment occupies a small area, and is particularly suitable for sewage treatment in cities with crowded population.
Drawings
FIG. 1 is a process flow diagram.
FIG. 2 is a schematic diagram of the principle of the electrolytic reaction.
Detailed Description
The invention is further illustrated by the following specific examples:
according to the water quality analysis table, the main pollutants to be removed are: oil slicks and suspensions; COD; ammonia nitrogen; nickel and chromium
The surface of the wastewater sampling is provided with floating oil, and an electric flocculation and ozone aeration air floatation device is added to remove suspended matters, floating oil and nickel ions. Adjusting the pH value to 5.6, and removing COD, ammonia nitrogen and total precipitated chromium with strong oxidizing property through the advanced oxidation of the BDD electrode.
The detection indexes of the sewage treated in the examples are shown in Table 1 below
| Name of project | Unit of | Index parameter |
| COD | mg/L | 4450 |
| Ammonia nitrogen | mg/L | 124 |
| PH | - | 8.19 |
| Total chromium | mg/L | 0.718 |
| Total nickel | mg/L | 2.26 |
1. Determination of chemical oxygen demand (C0D)
Chemical Oxygen Demand (COD) is an important index for evaluating the pollution degree of sewage, the amount of reducing substances needing to be oxidized in a water sample is measured by a chemical method, and common test methods comprise a potassium dichromate method, a spectrophotometry method, a rapid digestion method and the like. The chemical oxygen demand of the experiment is measured by adopting the national standard GB11914-89, potassium dichromate solution with known concentration and volume is added into a water sample, silver salt is used as a catalyst, boiling reflux is carried out for 2 hours until the reaction is complete, the reaction is cooled to room temperature, ferroxyl is added as an indicator, the unreduced potassium dichromate solution in the water is back titrated by ammonium ferrous sulfate, and the mass concentration of consumed oxygen is converted.
C- -concentration mol/l of ferrous ammonium sulfate standard solution;
vo-volume mL of the ammonium ferrous sulfate standard solution consumed by the blank sample;
v1- -volume mL of the ammonium ferrous sulfate standard solution consumed by the sample;
v. volume mL of water sample;
8- -molar mass of oxygen (1/2) (g/mol);
2. determination of ammonia nitrogen
1) Water sample pretreatment: the colorless and clear water sample can be directly measured; water samples with high chroma and turbidity and more interference substances need to be subjected to pretreatment steps such as distillation or coagulating sedimentation.
2) Drawing a standard curve: 0, 0.50, 1.00, 3.00, 5.00, 7.00 and 10.0mL of standard ammonium use solution are sucked into a 50mL colorimetric tube, water is added to the marked line, 1.0mL of potassium sodium tartrate solution is added, and the mixture is mixed evenly. Add 1.5mL of Nashi reagent and mix well. After standing for 10min, the absorbance was measured at a wavelength of 420nm using a 10mm optical path cuvette with water as a reference.
And subtracting the absorbance of the zero-concentration blank tube from the measured absorbance to obtain corrected absorbance, and drawing a standard curve of ammonia nitrogen content (mg) to the corrected absorbance.
3) And (3) determination of a water sample: taking a proper amount of water sample (the content of ammonia nitrogen is not more than 0.1 mg), adding the water sample into a 50mL colorimetric tube, diluting the water sample to a marked line, adding 1.0mL of potassium sodium tartrate solution (the water sample is pretreated by distillation, and the water sample and the standard tube are not added with the reagent), uniformly mixing, adding 1.5mL of a Nashin reagent, uniformly mixing, and standing for 10 min.
4) Blank test: and replacing a water sample with ammonia-free water, and performing whole-process blank determination.
And (5) after subtracting the absorbance of the blank experiment from the absorbance measured by the water sample, checking the ammonia nitrogen content (mg) from the standard curve.
Ammonia nitrogen (N, mg/L) = mx 1000/V
In the formula: m, checking the ammonia nitrogen content (mg) of the sample tube by a calibration curve;
v-water sample volume (mL).
Determination of the pH
The pH was measured using a Hash pH meter.
4. Determination of Total chromium and Total Nickel
Referring to part 4 of a chemical analysis method of GB/T34500.4-2017 rare earth waste residue and wastewater: measuring the amounts of copper, zinc, lead, chromium, cadmium, barium, cobalt, manganese, nickel and titanium, and performing inductively coupled plasma atomic emission spectrometry.
Example 1
A method for treating sewage by advanced oxidation of a BDD electrode comprises the following process flows:
s1 coagulating sedimentation process: the equipment comprises an electric flocculation device, an air compressor, a cold dryer and an ozone generator; the water in the raw water tank enters the electric flocculation device through a pump; air is processed by an air compressor, a cold dryer and an ozone generator to prepare ozone, the ozone enters an electric flocculation device from the bottom of the electric flocculation device through a micro air flotation device, and floating oil, suspended matters and total nickel are removed through electrolysis, emulsion breaking and coagulation; removing scum to obtain supernatant;
s2 electrochemical reaction: the supernatant after coagulating sedimentation enters an electrochemical BDD advanced oxidation membrane group, a BDD electrode is used as an anode, the initial pH is adjusted to be 7, and the current density is controlled to be 70mA/cm2Controlling the reaction temperature to be 30 ℃, and electrolyzing the supernatant for 4 hours;
after separation and precipitation, the supernatant fluid is discharged after reaching the standard, and the precipitate in the sedimentation tank is removed to a solid waste collection tank; discharging the effluent after the coagulating sedimentation pretreatment into a new reservoir;
furthermore, the effective dose of the high-efficiency ionic flocculant is added in the process of the electric flocculation,
the whole process is provided with a control system, personnel management is needed for medicine adding, pollution discharge and water quality monitoring, the equipment is controlled by PLC programming, and automatic operation control can be realized by only setting corresponding parameters.
The micro air flotation device is used for removing suspended matters in the wastewater discharged by the flocculation reaction device, reduces the subsequent treatment difficulty, is of a skid-mounted type, and has a water tank volume of 0.5m3Compressed air flow rate: 3m cultivation/h, air pressure: 0.4Mpa, gas production flow: 0.5m manganese/h, ozone concentration: 120 mg/L.
The equipment of the electrochemical reactor occupies the area: 1m21 electrolytic tank, effectiveCarrying out volume 1m cultivation; the electrolysis time is set to be 30 min; and 2KW of power distribution.
The power of the aluminum electrode of the electric flocculation device is 1 KW; when the water quality of the front end reaches the standard, the machine can not be started.
The number of the solid waste collecting barrels is as follows: 1, effective volume: and 1m carrying out labor intensity.
The control system adopts a Siemens control system, is customized and programmed, and is responsible for field inspection, medicament supplement and periodic pollution discharge work.
The preparation method of the high-efficiency ionic flocculant comprises the following steps:
adding 20g of acrylamide, 0.5g of modified pyrrole monomer and 0.05g of 4-propenyl thiosemicarbazide into a reaction kettle, adding 50g of thioglycollic acid, 120g of tetrahydrofuran and 5g of triethylamine under the protection of high-purity nitrogen, reacting for 6 hours at 50 ℃, and distilling the reaction mixture under reduced pressure to remove tetrahydrofuran to obtain the high-efficiency ionic flocculant.
The preparation method of the modified pyrrole monomer comprises the following steps:
under the protection of nitrogen, adding 4g of metal sodium and 10g of pyrrole into 70g of toluene, controlling the temperature at 70 ℃, and stirring for reaction for 2 hours; and (3) cooling to room temperature, slowly adding 15g of vinyl sulfonyl chloride into the reaction system, and after the addition is finished, controlling the temperature to be 60 ℃, stirring and reacting for 1h to obtain the modified pyrrole monomer.
The analytical data of the wastewater treated by the experiment are shown in Table 2.
Example 2
A method for treating sewage by advanced oxidation of a BDD electrode comprises the following process flows:
s1 coagulating sedimentation process: the equipment comprises an electric flocculation device, an air compressor, a cold dryer and an ozone generator; the water in the raw water tank enters the electric flocculation device through a pump; air is processed by an air compressor, a cold dryer and an ozone generator to prepare ozone, the ozone enters an electric flocculation device from the bottom of the electric flocculation device through a micro air flotation device, and floating oil, suspended matters and total nickel are removed through electrolysis, emulsion breaking and coagulation; removing scum to obtain supernatant;
s2 electrochemical reaction: the supernatant after coagulating sedimentation enters an electrochemical BDD advanced oxidation membrane groupUsing BDD electrode as anode, adjusting initial pH to 8, and controlling current density at 90mA/cm2Controlling the reaction temperature to be 35 ℃, and electrolyzing the supernatant for 4.5 hours;
after separation and precipitation, the supernatant fluid is discharged after reaching the standard, and the precipitate in the precipitation tank is sent to a solid waste collection tank; discharging the effluent after the coagulating sedimentation pretreatment into a new reservoir;
furthermore, the effective dose of the high-efficiency ionic flocculant is added in the process of the electric flocculation,
the whole process is provided with a control system, personnel management is needed for medicine adding, pollution discharge and water quality monitoring, the equipment is controlled by PLC programming, and automatic operation control can be realized by only setting corresponding parameters.
The micro-air-floatation device is used for removing suspended matters in the wastewater discharged by the flocculation reaction device and reducing the subsequent treatment difficulty, and is of a skid-mounted type, and the volume of the water tank is 1.5m3Compressed air flow rate: 4 m/h, air pressure: 0.5Mpa, gas production flow: 1.5m ethanol/h, ozone concentration: 130 mg/L.
The equipment floor area of the electrochemical reactor is as follows: 2m22 electrolytic barrels with an effective volume of 2m for harvesting; the electrolysis time is set to be 45 min; and 3KW of a power distribution power supply.
The power of the aluminum electrode of the electric flocculation device is 2 KW; when the water quality of the front end reaches the standard, the machine can not be started.
The number of the solid waste collecting barrels is as follows: 2, effective volume: 3m and carrying out harvesting.
The control system adopts a Siemens control system, is customized and programmed, and is responsible for field inspection, medicament supplement and periodic pollution discharge work.
The preparation method of the high-efficiency ionic flocculant comprises the following steps:
adding 24g of acrylamide, 2g of modified pyrrole monomer and 0.5g of 4-propenyl thiosemicarbazide into a reaction kettle, adding 55g of thioglycollic acid, 125g of tetrahydrofuran and 7g of triethylamine under the protection of high-purity nitrogen, reacting for 7 hours at 54 ℃, and distilling the reaction mixture under reduced pressure to remove tetrahydrofuran to obtain the high-efficiency ionic flocculant.
The preparation method of the modified pyrrole monomer comprises the following steps:
under the protection of nitrogen, adding 8g of metal sodium and 12g of pyrrole into 80g of toluene, controlling the temperature at 74 ℃, and stirring to react for 2.5 h; and (3) cooling to room temperature, slowly adding 18g of vinyl sulfonyl chloride into the reaction system, and after the addition is finished, controlling the temperature to be 64 ℃ and stirring for reaction for 1.5h to obtain the modified pyrrole monomer.
The analytical data of the wastewater treated by the experiment are shown in Table 2.
Example 3
A method for treating sewage by advanced oxidation of a BDD electrode comprises the following process flows:
s1 coagulating sedimentation process: the equipment comprises an electric flocculation device, an air compressor, a cold dryer and an ozone generator; the water in the raw water tank enters the electric flocculation device through a pump; air is processed by an air compressor, a cold dryer and an ozone generator to prepare ozone, the ozone enters an electric flocculation device from the bottom of the electric flocculation device through a micro air flotation device, and floating oil, suspended matters and total nickel are removed through electrolysis, emulsion breaking and coagulation; removing scum to obtain supernatant;
s2 electrochemical reaction: the supernatant after coagulating sedimentation enters an electrochemical BDD advanced oxidation membrane group, a BDD electrode is used as an anode, the initial pH is adjusted to be 8, and the current density is controlled to be 120mA/cm2Controlling the reaction temperature at 45 ℃, and electrolyzing the supernatant for 4.5 h;
after separation and precipitation, the supernatant fluid is discharged after reaching the standard, and the precipitate in the sedimentation tank is removed to a solid waste collection tank; discharging the effluent after the coagulating sedimentation pretreatment into a new reservoir;
furthermore, the effective dose of the high-efficiency ionic flocculant is added in the process of the electric flocculation,
the whole process is provided with a control system, personnel management is needed for medicine adding, pollution discharge and water quality monitoring, the equipment is controlled by PLC programming, and automatic operation control can be realized by only setting corresponding parameters.
The micro-air-floatation device is used for removing suspended matters in the wastewater discharged by the flocculation reaction device and reducing the subsequent treatment difficulty, and is of a skid-mounted type, and the volume of the water tank is 2m3Compressed air flow rate: 5m cultivation/h, air pressure: 0.7Mpa, gas production flow: 3m Linked at/h, ozone concentration: 140 mg/L.
The equipment floor area of the electrochemical reactor is as follows: 3m2Carrying out 3m high harvest on 2 electrolytic barrels; the electrolysis time is set to be 70 min; and 4KW of a power distribution power supply.
The power of the aluminum electrode of the electric flocculation device is 3 KW; when the water quality of the front end reaches the standard, the machine can not be started.
The number of the solid waste collecting barrels is as follows: 2, effective volume: and 5m carrying out downward cultivation.
The control system adopts a Siemens control system, is customized and programmed, and is responsible for field inspection, medicament supplement and periodic pollution discharge work.
The preparation method of the high-efficiency ionic flocculant comprises the following steps:
adding 28g of acrylamide, 4g of modified pyrrole monomer and 1g of 4-propenyl thiosemicarbazide into a reaction kettle, adding 65g of thioglycollic acid, 135g of tetrahydrofuran and 9g of triethylamine under the protection of high-purity nitrogen, reacting for 9 hours at 58 ℃, and distilling the reaction mixture under reduced pressure to remove tetrahydrofuran to obtain the high-efficiency ionic flocculant.
The preparation method of the modified pyrrole monomer comprises the following steps:
under the protection of nitrogen, adding 14g of metal sodium and 15g of pyrrole into 90g of toluene, controlling the temperature at 78 ℃, and stirring for reaction for 3.5 hours; and (3) cooling to room temperature, slowly adding 20g of vinyl sulfonyl chloride into the reaction system, and after the addition is finished, controlling the temperature to be 68 ℃, stirring and reacting for 2.5 hours to obtain the modified pyrrole monomer.
The analytical data of the wastewater treated by the experiment are shown in Table 2.
Example 4
A method for treating sewage by advanced oxidation of a BDD electrode comprises the following process flows:
s1 coagulating sedimentation process: the equipment comprises an electric flocculation device, an air compressor, a cold dryer and an ozone generator; the water in the raw water tank enters the electric flocculation device through a pump; air is processed by an air compressor, a cold dryer and an ozone generator to prepare ozone, the ozone enters an electric flocculation device from the bottom of the electric flocculation device through a micro air flotation device, and floating oil, suspended matters and total nickel are removed through electrolysis, emulsion breaking and coagulation; removing scum to obtain supernatant;
s2 electrochemical reaction: the supernatant after coagulating sedimentation enters an electrochemical BDD advanced oxidation membrane group, a BDD electrode is used as an anode, the initial pH is adjusted to 9, and the current density is controlled to be 130mA/cm2Controlling the reaction temperature to be 50 ℃, and electrolyzing the supernatant for 5 h;
after separation and precipitation, the supernatant fluid is discharged after reaching the standard, and the precipitate in the sedimentation tank is removed to a solid waste collection tank; discharging the effluent after the coagulating sedimentation pretreatment into a new reservoir;
furthermore, the effective dose of the high-efficiency ionic flocculant is added in the process of the electric flocculation,
the whole process is provided with a control system, personnel management is needed for medicine adding, pollution discharge and water quality monitoring, the equipment is controlled by PLC programming, and automatic operation control can be realized by only setting corresponding parameters.
The micro-air-floatation device is used for removing suspended matters in the wastewater discharged by the flocculation reaction device and reducing the subsequent treatment difficulty, and is of a skid-mounted type, and the volume of the water tank is 3m3Carrying out topdressing on the seeds at the speed of 6m under the pressure of 0.8MPa, carrying out topdressing on the seeds at the speed of 4m under the pressure of 0.8MPa, and carrying out topdressing on the seeds at the speed of 150 mg/L.
The equipment floor area of the electrochemical reactor is as follows: 4m23 electrolytic barrels are planted in the effective volume of 4 m; the electrolysis time is set to be 90 min; and 5KW of a power distribution power supply.
The power of the aluminum electrode of the electric flocculation device is 4 KW; when the water quality of the front end reaches the standard, the machine can not be started.
The number of the solid waste collecting barrels is as follows: 3, effective volume: and 6m carrying out downward cultivation.
The control system adopts a Siemens control system, is customized and programmed, and is responsible for field inspection, medicament supplement and periodic pollution discharge work.
The preparation method of the high-efficiency ionic flocculant comprises the following steps:
adding 30g of acrylamide, 5g of modified pyrrole monomer and 1.2g of 4-propenyl thiosemicarbazide into a reaction kettle, adding 70g of thioglycollic acid, 140g of tetrahydrofuran and 11g of triethylamine under the protection of high-purity nitrogen, reacting for 10 hours at 60 ℃, and distilling the reaction mixture under reduced pressure to remove tetrahydrofuran to obtain the high-efficiency ionic flocculant.
The preparation method of the modified pyrrole monomer comprises the following steps:
under the protection of nitrogen, adding 17g of metal sodium and 16g of pyrrole into 100g of toluene, controlling the temperature to be 80 ℃, and stirring for reaction for 4 hours; and (3) cooling to room temperature, slowly adding 22g of vinyl sulfonyl chloride into the reaction system, and after the addition is finished, controlling the temperature to be 70 ℃, stirring and reacting for 3 hours to obtain the modified pyrrole monomer.
Various analysis data of the wastewater treated by the experiment are shown in the table 2.
Comparative example 1
The same procedure as in example 3 was repeated except that the electrochemical BDD advanced oxide membrane module of the present invention was not used in a general electrolytic water treatment apparatus.
Various analysis data of the wastewater treated by the experiment are shown in the table 2.
Comparative example 2
The same procedure as in example 3 was repeated except that the high-performance ionic flocculant was not added;
various analysis data of the wastewater treated by the experiment are shown in the table 2.
Comparative example 3
The same procedure as in example 3 was repeated except that no modified pyrrole monomer was added;
otherwise, the same as example 3;
the analytical data of the wastewater treated by the experiment are shown in Table 2.
Table 2 summary table of various analysis data of waste water
| Name of item | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| COD（mg/L） | 670 | 550 | 410 | 503 | 2200 | 2690 | 1530 |
| Ammonia nitrogen (mg/L) | 73 | 70 | 55 | 52 | 150 | 170 | 210 |
| PH | 6 | 7 | 7 | 7 | 8 | 8 | 8 |
| Total chromium (mg/L) | 0.1 | 0.08 | 0.06 | 0.06 | 0.5 | 0.3 | 0.3 |
| Total nickel (mg/L) | 0.5 | 0.3 | 0.2 | 0.3 | 1.0 | 0.8 | 0.7 |
Claims (8)
1. A method for treating sewage by advanced oxidation of a BDD electrode comprises the following process flows:
s1 coagulating sedimentation process: the equipment comprises an electric flocculation device, an air compressor, a cold dryer and an ozone generator; the water in the raw water tank enters the electric flocculation device through a pump; air is processed by an air compressor, a cold dryer and an ozone generator to prepare ozone, the ozone enters the electric flocculation device from the bottom of the electric flocculation device through a micro air flotation device, and floating oil, suspended matters and total nickel are removed through electrolysis, emulsion breaking and coagulation; removing scum to obtain supernatant;
s2 electrochemical reaction: the supernatant after coagulating sedimentation enters an electrochemical BDD advanced oxidation membrane group, a BDD electrode is used as an anode, the initial pH is adjusted to be 7-9, and the current density is controlled to be 70-130 mA/cm2Controlling the reaction temperature to be 30-50 ℃, and electrolyzing the supernatant for 4-5 hours;
after separation and precipitation, the supernatant fluid is discharged after reaching the standard, and the precipitate in the sedimentation tank is removed to a solid waste collection tank; discharging the effluent after the coagulating sedimentation pretreatment into a new reservoir;
further, an effective dose of high-efficiency ionic flocculant is added in the process of electric flocculation;
the whole process is provided with a control system, personnel management is needed for medicine adding, pollution discharge and water quality monitoring, the equipment is controlled by PLC programming, and automatic operation control can be realized by only setting corresponding parameters.
2. The method for advanced oxidative treatment of wastewater with the BDD electrode as claimed in claim 1, wherein: the micro-air-floatation device is used for removing suspended matters in the wastewater discharged by the flocculation reaction device and reducing the subsequent treatment difficulty, and is of a skid-mounted type, and the volume of the water tank is 0.5-3m3Compressed air flow rate: 3-6m, air pressure: 0.4-0.8Mpa, gas production flow: 0.5-4m, ozone concentration: 120-150 mg/L.
3. The method for advanced oxidative treatment of wastewater with the BDD electrode as claimed in claim 1, wherein: the equipment floor area of the electrochemical reactor is as follows: 1-4m2, 1-3 electrolytic barrels, and the effective volume is 1-4m for carrying out thin fruit trees; the electrolysis time is set to be 30-90 min; and 2-5KW of power distribution.
4. The method for advanced oxidative treatment of wastewater with the BDD electrode as claimed in claim 1, wherein: the power of the aluminum electrode of the electric flocculation device is 1-4 KW; when the water quality of the front end reaches the standard, the machine can not be started.
5. The method for advanced oxidative treatment of wastewater with the BDD electrode as claimed in claim 1, wherein: the number of the solid waste collecting barrels is as follows: 1-3, effective volume: and (5) carrying out fruit trees from 1 to 6 m.
6. The method for advanced oxidative treatment of wastewater with the BDD electrode as claimed in claim 1, wherein: the control system adopts a Siemens control system, is customized and programmed, and is responsible for field inspection, medicament supplement and periodic pollution discharge work.
7. The method for the advanced oxidation treatment of sewage by the BDD electrode as claimed in claim 1, wherein: the preparation method of the high-efficiency ionic flocculant comprises the following steps:
according to the mass portion, 20-30 portions of acrylamide, 0.5-5 portions of modified pyrrole monomer and 0.05-1.2 portions of 4-propenyl thiosemicarbazide are added into a reaction kettle, 50-70 portions of thioglycollic acid, 120-140 portions of tetrahydrofuran, 5-11 portions of triethylamine and 50-60 ℃ are added for reaction for 6-10h under the protection of high-purity nitrogen, and the reaction mixture is decompressed and distilled to remove the tetrahydrofuran, so that the high-efficiency ionic flocculant is obtained.
8. The method for advanced oxidative treatment of wastewater with the BDD electrode as claimed in claim 7, wherein: the preparation method of the modified pyrrole monomer comprises the following steps:
adding 4-17 parts of sodium metal and 10-16 parts of pyrrole into 70-100 parts of toluene according to the mass parts under the protection of nitrogen, controlling the temperature to be 70-80 ℃, and stirring for reaction for 2-4 hours; and (3) cooling to room temperature, slowly adding 15-22 parts of vinyl sulfonyl chloride into the reaction system, and after the addition is finished, controlling the temperature to be 60-70 ℃, and stirring for reaction for 1-3 hours to obtain the modified pyrrole monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210314180.5A CN114702177A (en) | 2022-03-29 | 2022-03-29 | Method for advanced oxidation treatment of sewage by BDD electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210314180.5A CN114702177A (en) | 2022-03-29 | 2022-03-29 | Method for advanced oxidation treatment of sewage by BDD electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114702177A true CN114702177A (en) | 2022-07-05 |
Family
ID=82169994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210314180.5A Pending CN114702177A (en) | 2022-03-29 | 2022-03-29 | Method for advanced oxidation treatment of sewage by BDD electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114702177A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995015295A1 (en) * | 1993-11-26 | 1995-06-08 | Deheurles, Alain | Method for a waste water treatment plant |
| DE102004032255A1 (en) * | 2004-07-03 | 2006-01-19 | Bergthaller, Peter, Dr. | Method for removing dissolved heavy metals, transition metals and/or metalloids from aqueous solution comprises contacting the solution with a water-insoluble hydrophilic polymer complex structure unit present in particle form |
| CN107236127A (en) * | 2017-07-21 | 2017-10-10 | 张娟 | A kind of preparation method of compound monomer denatured conductive material |
| CN113061217A (en) * | 2021-05-13 | 2021-07-02 | 蒋春梅 | Preparation method of novel flame retardant for polylactic acid |
| CN113511762A (en) * | 2021-07-12 | 2021-10-19 | 中国石油大学(北京) | Method and device for treating oil field sewage |
-
2022
- 2022-03-29 CN CN202210314180.5A patent/CN114702177A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995015295A1 (en) * | 1993-11-26 | 1995-06-08 | Deheurles, Alain | Method for a waste water treatment plant |
| DE102004032255A1 (en) * | 2004-07-03 | 2006-01-19 | Bergthaller, Peter, Dr. | Method for removing dissolved heavy metals, transition metals and/or metalloids from aqueous solution comprises contacting the solution with a water-insoluble hydrophilic polymer complex structure unit present in particle form |
| CN107236127A (en) * | 2017-07-21 | 2017-10-10 | 张娟 | A kind of preparation method of compound monomer denatured conductive material |
| CN113061217A (en) * | 2021-05-13 | 2021-07-02 | 蒋春梅 | Preparation method of novel flame retardant for polylactic acid |
| CN113511762A (en) * | 2021-07-12 | 2021-10-19 | 中国石油大学(北京) | Method and device for treating oil field sewage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ozyonar et al. | Treatment of pretreated coke wastewater by electrocoagulation and electrochemical peroxidation processes | |
| Gutierrez et al. | A review of electrochemical treatments for colour elimination | |
| CN101638257B (en) | Method and device for treating dye wastewater employing periodic reverse electrocoagulation | |
| CN112960819A (en) | Double oxidation-electrochemical oxidation combined process for advanced treatment of landfill leachate | |
| Ehsani et al. | A new combined electrocoagulation-electroflotation process for pretreatment of synthetic and real Moquette-manufacturing industry wastewater: Optimization of operating conditions | |
| CN106830467A (en) | A kind of Fenton methods integrated sewage treatment device and its method based on iron cement reuse | |
| Meng et al. | Removal of chemical oxygen demand and ammonia nitrogen from high salinity tungsten smelting wastewater by one-step electrochemical oxidation: From bench-scale test, pilot-scale test, to industrial test | |
| CN108862753A (en) | The method of nitrobenzene wastewater electrochemistry advanced treating | |
| Bejan et al. | Electrochemical reduction of As (III) and As (V) in acidic and basic solutions | |
| CN111423066A (en) | Sewage treatment system | |
| CN106587445B (en) | Pretreatment method of antibiotic production wastewater | |
| CN113582439A (en) | Iron-carbon Fenton pretreatment method for acidic high-salt high-concentration organic wastewater | |
| AU652341B2 (en) | Process for treatment of water and apparatus therefor | |
| Yang et al. | Removal of ammonia nitrogen from wastewater by three-dimensional electrode system based on solid waste containing iron | |
| CN114702177A (en) | Method for advanced oxidation treatment of sewage by BDD electrode | |
| CN1321906C (en) | Method for treating DSD acid oxidized waste water using electrolytic process | |
| Barrera-Díaz et al. | A comparison of iron and aluminium electrodes in hydrogen peroxide-assisted electrocoagulation of organic pollutants | |
| KR101032619B1 (en) | Method for wastewater including chromaticity treatment using electrochemistry | |
| CN214735172U (en) | Wastewater treatment device and wastewater treatment system | |
| KR19980077286A (en) | Oxidation of Organic Wastewater in an Electrolytic Treatment Tank Using Fenton Oxidation | |
| Sürme et al. | Determination of direct violet 51 dye in water based on its decolorisation by electrochemical treatment | |
| Dehghani et al. | Biological denitrification using microbial electrochemical technology: a perspective of materials, the arrangement of electrodes and energy consumption | |
| CN113860587B (en) | Pretreatment method of styrene-containing wastewater | |
| CN212102464U (en) | 3-aminopropanol waste recycling preprocessing device | |
| Hossain et al. | Degradation of organic pollutants in leachate from a garbage incineration plant: Exploring Electrochemical oxidation for the treatment of membrane bioreactor (MBR) effluent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220705 |