SK280649B6 - Method for water purification based on the fenton reaction - Google Patents
Method for water purification based on the fenton reaction Download PDFInfo
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- SK280649B6 SK280649B6 SK1465-97A SK146597A SK280649B6 SK 280649 B6 SK280649 B6 SK 280649B6 SK 146597 A SK146597 A SK 146597A SK 280649 B6 SK280649 B6 SK 280649B6
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- flocculant
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 8
- 238000000746 purification Methods 0.000 title claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 14
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000701 coagulant Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000013049 sediment Substances 0.000 claims abstract description 5
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 3
- 230000005855 radiation Effects 0.000 claims abstract 3
- 125000002091 cationic group Chemical group 0.000 claims description 6
- 239000008213 purified water Substances 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims 1
- 238000011403 purification operation Methods 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 description 13
- 239000002351 wastewater Substances 0.000 description 11
- 238000004062 sedimentation Methods 0.000 description 6
- 238000004065 wastewater treatment Methods 0.000 description 6
- 239000012028 Fenton's reagent Substances 0.000 description 5
- 238000006386 neutralization reaction Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- WXNZTHHGJRFXKQ-UHFFFAOYSA-N 4-chlorophenol Chemical compound OC1=CC=C(Cl)C=C1 WXNZTHHGJRFXKQ-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
Description
Oblasť technikyTechnical field
Vynález sa týka spôsobu čistenia vôd na báze Fcntonovej reakcie.The invention relates to a process for purifying water based on the Fcnton reaction.
Doterajší stav technikyBACKGROUND OF THE INVENTION
Čistenie odpadových vôd s použitím Fentonovcj reakcie, teda pôsobením H2O2 a FeSO4. 7 H2O opísané v prácach J. H. Careya, Water Poli. Res. J. Canada 27, 1 (1992), S. H. Lina a C. F. Penga, Environ. Technol. 16, 693 (1995) a v monotematickom čísle editorovanom A. Vogelpohlom a S. U. Geissenom, Oxidation Technologies for Water and Wastewater Treatment. Water Sci Technol. 35 (4), 1 - 363 (1997) predstavuje dôležitý krok v oblasti technológie čistenia odpadových vôd. Tieto technológie sú všeobecne nazývané Advanced Oxidation Technologies (AOTs).Wastewater treatment using Fenton reaction, ie by treatment with H 2 O 2 and FeSO 4 . 7 H 2 O described by JH Carey, Water Poli. Res. J. Canada 27, 1 (1992), SH Lina and CF Penga, Environ. Technol. 16, 693 (1995) and in a monothematic issue edited by A. Vogelpohl and SU Geissen, Oxidation Technologies for Water and Wastewater Treatment. Water Sci Technol. 35 (4), 1-363 (1997) represents an important step in the field of waste water treatment technology. These technologies are commonly called Advanced Oxidation Technologies (AOTs).
Jednou z prvých prác v tejto oblasti je práca W. G. Kua, Water Res. 26, 881 (1992), ktorý Fentonovu reakciu robil pri teplote 50 °C a po jej uskutočnení pracoval len s hornou vrstvou čírej kvapaliny a nie s celým objemom a týmto postupom dosiahol pomerne vysoké hodnoty odstránenej farby a CHSK. Dosiahnuté výsledky preto neodzrkadľujú reálnu skutočnosť, nakoľko autor nepracoval s celým objemom čistenej vody. Nevýhodou použitého postupu bola aj tá skutočnosť, že po vyzrážaní vzniknutá zrazenina sedimentovala najmenej 4 hodiny.One of the first works in this field is the work of W. G. Kua, Water Res. 26, 881 (1992), which carried out the Fenton reaction at 50 ° C and, after carrying out it, worked only with the upper layer of clear liquid and not with the entire volume, and achieved a relatively high removal of color and COD. The achieved results therefore do not reflect the real reality, as the author did not work with the entire volume of purified water. A disadvantage of the procedure used was also the fact that the precipitate formed sedimented for at least 4 hours.
Nevýhodou všetkých doteraz publikovaných prác je, že účinnosť odstránenej CHSK vo väčšine prípadov je len 60 až 80 %. Tieto nižšie hodnoty CHSK sú spôsobené použitím nevhodného pomeru H2O2 a Fe2+ soli. Tieto postupy často vedú k vytvoreniu jemnej disperznej sústavy a tým k predĺženiu sedimentačného času až na 24 hodín. Nevýhodou je tiež skutočnosť, že sa dosiahli horšie technologické parametre, ako je sedimentačná rýchlosť, tvar flokúl a filtrovateľnosť. Ďalším nedostatkom je potreba investične náročných zariadení.The disadvantage of all published work so far is that in most cases the efficiency of removed COD is only 60 to 80%. These lower COD values are due to the use of an inappropriate ratio of H 2 O 2 to Fe 2+ salt. These processes often lead to the formation of a fine dispersion system and thus an increase in the sedimentation time up to 24 hours. Another disadvantage is that worse technological parameters such as sedimentation rate, flocculation shape and filterability have been achieved. Another drawback is the need for investment-intensive equipment.
Podstatným nedostatkom uvedených prác je aj tá skutočnosť, že použitím AOTs sa uskutočňovala v prevažnej miere degradácia čistej látky, napríklad fenolu, 4-chlórfenolu a pod. v modelových vodách a s reálnymi odpadovými vodami sa prakticky nezaoberajú.A substantial drawback of the above-mentioned works is also the fact that the use of AOTs predominantly degraded the pure substance, for example phenol, 4-chlorophenol and the like. in model water and real wastewater are practically not dealt with.
Podstata vynálezuSUMMARY OF THE INVENTION
Uvedené nevýhody odstraňuje spôsob podľa vynálezu, ktorého podstata spočíva v tom, že po prídavku heptahydrátu síranu železnatého FeSO4.7 H2O v množstve 0,05 až 0,40 % hmotn. a peroxidu vodíka H2O2 v množstve 0,03 až 0,45 % hmotn. k znečistenej vode upravenej na pH = 2,0 až 4,0 sa vzniknutá zmes mieša počas 60 až 90 min. pri teplote 10 až 30 °C, potom sa nechá doreagovať počas 10 až 35 minút a ďalej sa zneutralizuje na pH = 7,0 až 8,0, napokon sa za intenzívneho miešania pridá flokulant na báze polyakrylamidových kopolymérov a/alebo koagulant v množstve 0,01 až 1,5 % hmotn. a zmes sa nechá sedimentovať počas 0,5 až 3 hod a následne sa oddelí vyčistená voda od sedimentu.The above disadvantages are eliminated by the process of the invention, which is characterized in that the addition of ferrous sulfate heptahydrate FeSO 4 .7 H 2 O 0.05 to 0.40% by weight. and hydrogen peroxide H 2 O 2 in an amount of 0.03 to 0.45 wt. to contaminated water adjusted to pH = 2.0 to 4.0, the resulting mixture is stirred for 60 to 90 min. at a temperature of 10 to 30 ° C, then allowed to react for 10 to 35 minutes and further neutralized to pH = 7.0 to 8.0, finally adding polyacrylamide copolymer flocculant and / or coagulant in an amount of 0 with vigorous stirring. % To about 1.5 wt. and the mixture is allowed to sediment for 0.5 to 3 hours and then purified water is separated from the sediment.
Ako flokulant možno použiť katiónaktívny, aniónaktívny, prípadne neutrálny flokulant.As a flocculant, cationic, anionic or neutral flocculants may be used.
Po prídavku FeSO4. 7 H2O a H2O2 k znečistenej vode sa vzniknutá zmes môže miešať za prítomnosti denného svetla, slnečného žiarenia, prípadne umelého UV-VIS žiarenia alebo za tmy.After addition of FeSO 4 . 7 H 2 O and H 2 O 2 to contaminated water, the resulting mixture can be mixed in the presence of daylight, sunlight, possibly artificial UV-VIS light or in the dark.
Ako koagulant možno použiť polyalumíniumchlorid, polyalumíniumsulfát, síran hlinitý, chlorid železitý, prípadne chlorid hlinitý.As a coagulant, polyaluminium chloride, polyaluminium sulphate, aluminum sulphate, ferric chloride or aluminum chloride may be used.
Použitím flokulantu, prípadne jeho kombináciou s koagulantom sa podstatne skráti čas sedimentácie na 0,5 až 3 hod. a podstatne sa zlepší hodnota odstránenej CHSK. Výrazne sa zlepši aj kvalita flokúl vznikajúceho kalu, flokuly majú definovaný tvar, a tým sa zlepšia aj možnosti lepšej filtrácie kalu.The use of flocculant or its combination with coagulant significantly reduces the sedimentation time to 0.5 to 3 hours. and the COD removed is greatly improved. The quality of the flocculation of the resulting sludge is also greatly improved, the floccules having a defined shape, thereby improving the possibilities of better filtration of the sludge.
Pri stanovení CHSK aj pri úprave pH sa pracuje s celým objemom čistenej reálnej odpadovej vody, čo má samozrejme za následok zistenie skutočných parametrov vyčistenej vody.Both COD and pH adjustment work with the entire volume of purified real waste water, which obviously results in the real parameters of the purified water being determined.
Spôsob podľa vynálezu možno pre jeho jednoduchosť využiť ako jeden stupeň čistenia v zariadeniach, ktoré sú súčasťou čistiarne odpadových vôd, nakoľko tento spôsob čistenia nevyžaduje osobitné zariadenie na uskutočnenie tejto operácie. Spôsob podľa vynálezu takto odstraňuje zložitosť používaných zariadení, zlepšuje technologické parametre vznikajúceho kalu, znižuje časovú náročnosť, podstatne zvyšuje účinnosť odstránenej chemickej spotreby kyslíka (CHSK) a v súčasnosti patrí medzi ekonomicky najvýhodnejšie postupy používané v rámci AOTs technológii. Túto jednoduchú čistiacu metódu jc možné použiť v stacionárnom, semikontinuálnom a kontinuálnom usporiadaní, a to ako operáciu predčistenia, ako jeden zo stupňov čistenia alebo dočistenia znečistenej vody pred vypustením do recipientu.For the sake of simplicity, the method according to the invention can be used as one stage of purification in plants that are part of a wastewater treatment plant, since this method of purification does not require a separate device to perform this operation. The process according to the invention thus eliminates the complexity of the equipment used, improves the technological parameters of the resulting sludge, reduces the time required, substantially increases the efficiency of the removed chemical oxygen demand (COD) and is currently among the most economically advantageous processes used in AOTs technology. This simple purification method can be used in a stationary, semi-continuous and continuous arrangement, as a pretreatment operation, as one of the steps of purification or purification of contaminated water prior to discharge to the recipient.
Príklady uskutočnenia vynálezuDETAILED DESCRIPTION OF THE INVENTION
Príklad 1Example 1
Do 500 ml Erlenmayerovej banky sa odmeralo 300 ml odpadovej vody z parfumárskej výroby s východiskovou hodnotou CHSK = 1855 mg.ľ1 a 5 % H2SO4 sa upravilo jej pH na hodnotu 3,0. Potom sa za miešania pridalo 1,09372 g FeSO4.7 H2O a 1,6 ml 30 % H2O2. Zmes sa 90 minút miešala pri teplote 22 °C na elektromagnetickej miešačke (200 otáčok/min.’1) a potom 30 minút stála. Po 30 minútach sa zneutralizovala roztokom uhličitanu sodného na pH = = 7,0, potom sa pridala 1 kvapka 0,1 % vodného roztoku katiónaktívneho flokulantu Zetag 57. Po 30 minútach sedimentácie bola v čírej kvapaline stanovená hodnota CHSK. Výsledná hodnota CHSK = 240 mg.ľ1, účinnosť odstránenej CHSK bola 87 %.To a 500 ml Erlenmeyer flask 300 ml of perfume production waste water with a COD COD value of 1855 mg.l -1 and 5% H 2 SO 4 was adjusted to pH 3.0. Then, 1.09372 g of FeSO 4 .7H 2 O and 1.6 ml of 30% H 2 O 2 were added with stirring. The mixture was stirred for 90 minutes at 22 ° C on a magnetic stirrer (200 rev / min. "1) and 30 minutes standing. After 30 minutes, it was neutralized with sodium carbonate solution to pH = 7.0, then 1 drop of a 0.1% aqueous solution of cationic flocculant Zetag 57 was added. After 30 minutes of sedimentation, the COD value was determined in the clear liquid. The resulting COD value = 240 mg.l -1 , the COD removal efficiency was 87%.
Príklad 2Example 2
Do 500 ml Erlenmayerovej banky sa odmeralo 300 ml odpadovej vody z parfumárskej výroby s východiskovou hodnotou CHSK = 3111 mg.ľ1 a 5 % H2SO4 sa upravilo jej pH na hodnotu 3,0. Potom sa za miešania pridalo 0,82029 g FeSO4.7 H2O a 2,4 ml 30 % H2O2. Zmes sa 90 minút miešala pri teplote 22 °C na elektromagnetickej miešačke (200 otáčok/min.·1) a potom 30 minút stála. Po 30 minútach sa zneutralizovala roztokom uhličitanu sodného na pH = = 7,0. Po 30 minútach sedimentácie bola účinnosť odstránenej CHSK 81 %.In a 500 ml Erlenmeyer flask 300 ml of perfume production waste water with a COD COD value of 3111 mg.l -1 and 5% H 2 SO 4 was adjusted to pH 3.0. Then 0.82029 g of FeSO 4 .7H 2 O and 2.4 ml of 30% H 2 O 2 were added with stirring. The mixture was stirred at 22 ° C on an electromagnetic stirrer (200 rpm · 1 ) for 90 minutes and then allowed to stand for 30 minutes. After 30 minutes, it was neutralized with sodium carbonate solution to pH = 7.0. After 30 minutes of sedimentation, the COD removal efficiency was 81%.
Príklad 3Example 3
Postup a druh čistenej vody ako v príklade 2 s tým rozdielom, že po prídavku Fentonového činidla a neutralizácii sa k zmesi pridala 1 kvapka 0,1 % vodného roztoku katiónaktívneho flokulantu Zetag 57. Výsledná hodnota CHSK = = 480 mg.ľ1. Účinnosť odstránenej CHSK bola 87 %, t. j. oProcedure and type of purified water as in Example 2 except that after addition of the Fenton reagent and neutralization, 1 drop of a 0.1% aqueous solution of cationic flocculant Zetag 57 was added to the mixture. The resulting COD value = 480 mg.l -1 . The removal efficiency of COD was 87%, ie
SK 280649 Β6 % viac v porovnaní s príkladom 2 bez použitia flokulantu.2806% more compared to Example 2 without the use of flocculant.
Príklad 4Example 4
Odpadová voda z výroby syntetických vlákien s východiskovou hodnotou CHSKcr = 1556 mg.ľ1. Postup rovnaký ako v príklade 1 s tým rozdielom, že sa pridalo 0,27343 g FeSO4 .7 H2O a 0,8 ml 30 % H2O2. Výsledná hodnota CHSK = 658 mg.ľ1, účinnosť odstránenej CHSK bola 58 %.Waste water from the production of synthetic fibers with a COD COD value r = 1556 mg.ľ 1 . The procedure of EXAMPLE 1 except that it was added to 0.27343 g FeSO 4 .7 H 2 O and 0.8 ml 30% H 2 O second The resulting COD value was 658 mg.l -1 , the COD removal efficiency was 58%.
Príklad 5Example 5
K 300 ml vzorky výluhovej humínovej vody znečistenej ropnými látkami (4,43 mg.ľ1) s východiskovou hodnotou CHSK = 1828 mg.ľ1 a s pH 2,980 sa pridalo pri teplote 23 °C za miešania 1,09372 g FeSO4.7 H2O a 1,6 ml 30 % H2O2. 1 hodinu sa zmes miešala a 30 minút potom stála. Potom sa zneutralizovala za vytvorenia objemnej zrazeniny, ku ktorej sa pridala za miešania I kvapka 0,1 % roztoku flokulantu Zetag 57 a 1 kvapka koagulantu polyalumíniumchloridu (PAC-10 Novaflok). Po 1 hodine státia bola výsledná hodnota CHSK = 508 mg.ľ1 (72 %) a po troch hodinách státia 376 mg.ľ1 (79 %).To a 300 ml sample of lean oil-contaminated humic water (4.43 mg.l -1 ) with a starting COD = 1828 mg.l -1 and a pH of 2.980 was added at 23 ° C with stirring 1.09372 g FeSO 4 .7 H 2 O and 1.6 ml of 30% H 2 O 2 . The mixture was stirred for 1 hour and then allowed to stand for 30 minutes. It was then neutralized to form a bulk precipitate, to which 1 drop of a 0.1% Zetag 57 flocculant solution and 1 drop of polyaluminium chloride coagulant (PAC-10 Novaflok) were added with stirring. After 1 hour of standing, the resulting COD value was 508 mg.l- 1 (72%) and after 3 hours of standing 376 mg.l- 1 (79%).
Príklad 6Example 6
Vzorka vody a postup rovnaký ako v príklade 4 s tým, že pH = 2,96 a že sa pridalo 0,54686 g FeSO4 . 7 H2O aWater sample and procedure as in Example 4 except that pH = 2.96 and 0.54686 g of FeSO 4 was added. 7 H 2 O a
1,6 ml 30 % H2O2 a reakcia bola 90 minút vystavená intenzívnemu slnečnému žiareniu pri teplote 32 °C. Potom 30 minút stála a po neutralizácii na pH = 7,0 sa v celom objeme vyzrážala objemná zrazenina, ku ktorej sa pridala 1 kvapka flokulantu Zetag 57. Po 1 hodine sedimentácie bola výsledná hodnota čírej kvapaliny CHSK = 543 mg.ľ1 (70 %).1.6 ml of 30% H 2 O 2 and the reaction was exposed to intense sunlight at 32 ° C for 90 minutes. It was then allowed to stand for 30 minutes, and after neutralization to pH = 7.0, a bulk precipitate was added to the volume, to which 1 drop of Zetag 57 flocculant was added. After 1 hour of sedimentation, the resulting clear COD value was 543 mg.l -1 (70%). ).
Príklad 7Example 7
Postup rovnaký ako v príklade 5 s tým, že bolo použité 1000 ml odpadovej vody s upraveným pH = 2,994, ku ktorej sa pridalo 1,82287 g FeSO4 . 7 H2 O a 5,33 ml 30 % H2O2. Po 1 hodine státia bola výsledná hodnota CHSK = = 729 mg.ľ1 (60 %) a po 21 hodinách státia 484 mg.ľ1 (74 %). Obsah ropných látok poklesol z 4,43 mg.ľ1 naThe procedure was the same as in Example 5 except that 1000 ml of waste water with adjusted pH = 2.994 was used, to which 1.8228 g of FeSO 4 was added. 7 H 2 O and 5.33 ml of 30% H 2 O 2 . After 1 hour of standing, the resulting COD value = = 729 mg.l -1 (60%) and after 21 hours of standing 484 mg.l -1 (74%). The oil content decreased from 4.43 mg.l -1 to
2,84 mg.ľ1 (36 %).2.84 mg.l -1 (36%).
Príklad 8Example 8
K 300 ml vzorky odpadovej vody z výroby chemických vlákien s východiskovou CHSK =1112 mg.ľ1 a upraveným pH = 3,0 sa pridalo 0,54686 g FeSO4 . 7 H2O a 1,6 ml 30 % H2O2. Zmes sa 1 hodinu miešala pri teplote 24 °C, potom 30 minút stála. Po 30 minútach sa zneutralizovala na pH = 7,0, pridala sa 1 kvapka 0,1 % roztoku flokulantu Zetag 57 a nechala sa 1 hodinu sedimentovať. Výsledná hodnota CHSK = 17 mg.ľ1 (98,5 %). Obsah amoniaku poklesol z 344,2 mg.ľ1 na 240,5 mg.ľ1 (30 %).0.54686 g of FeSO 4 was added to a 300 ml sample of chemical fiber waste water with a COD COD = 1112 mg.l -1 and an adjusted pH = 3.0. 7 H 2 O and 1.6 ml 30% H 2 O 2 . The mixture was stirred at 24 ° C for 1 hour, then allowed to stand for 30 minutes. After 30 minutes, it was neutralized to pH = 7.0, 1 drop of a 0.1% Zetag 57 flocculant solution was added and allowed to sediment for 1 hour. The resulting COD = 17 mg.l- 1 (98.5%). The ammonia content decreased from 344.2 mg.l -1 to 240.5 mg.l -1 (30%).
Príklad 9Example 9
K 300 ml modelovej farebnej odpadovej vody obsahujúcej 100 mg.ľ1 farbiva Isolan Orange S-RL s pH = 3,0 sa pridalo Fentonove činidlo/0,54686 g FeSO4 . 7 H2O a 0,8 ml 30 % H2O2. Ďalší postup ako v príklade 1 s tým rozdielom, že sa po neutralizácii pridala 1 kvapka 0,1 % vodného roztoku katiónaktívneho flokulantu Superflock C 496. Po l hodine státia bola účinnosť odstránenia farby 99,5 % a CHSK = 86%.To 300 ml of model colored wastewater containing 100 mg · l 1 of the dye Isolan Orange S-RL, pH 3.0 was added Fenton reagent / 0.54686 g FeSO fourth 7 H 2 O and 0.8 ml of 30% H 2 O 2 . Proceed as in Example 1 except that 1 drop of 0.1% Superflock C 496 aqueous cationic flocculant was added after neutralization. After 1 hour of standstill, the paint removal efficiency was 99.5% and COD = 86%.
Príklad 10Example 10
K 300 ml modelovej farebnej odpadovej vody obsahujúcej 100 mg.ľ1 farbiva Isolan Marineblau S-RL s pH = 3,0 sa pridalo Fentonove činidlo/0,54686 g FeSO4 . 7 H2O a 0,8 ml 30%H2O2.Fenton reagent / 0.54686 g FeSO 4 was added to 300 ml model colored wastewater containing 100 mg.l- 1 Isolan Marineblau S-RL dye at pH = 3.0. 7 H 2 O and 0.8 ml of 30% H 2 O 2 .
Postup rovnaký ako v príklade 1 s tým rozdielom, že sa po neutralizácii pridala 1 kvapka 0,1 % vodného roztoku aniónaktívneho flokulantu Superflock A 130. Po 1 hodine státia bola účinnosť odstránenia farby 95,7 % a CHSK = = 80 %.The procedure was the same as in Example 1 except that 1 drop of a 0.1% aqueous solution of the anionic flocculant Superflock A 130 was added after neutralization. After 1 hour of standoff, the paint removal efficiency was 95.7% and COD = 80%.
Príklad 11Example 11
K 300 ml modelovej farebnej odpadovej vody obsahujúcej 100 mg.ľ1 farbiva Isolan Gelb S-GL s pH = 3,0 sa pridalo Fentonove činidlo/0,27343 g FeSO4 . 7 H2O a 0,8 ml 30 % H2O2.To 300 ml of model colored wastewater containing 100 mg · l 1 of the dye Isolan Gelb S-GL, pH 3.0 was added Fenton reagent / 0.27343 g FeSO fourth 7 H 2 O and 0.8 ml of 30% H 2 O 2 .
Postup rovnaký ako v príklade 1 s tým rozdielom, že roztok farbiva a Fentonového činidla bol vystavený slnečnému žiareniu počas 1,5 hod. pri teplote 10 °C a že sa po neutralizácii pridala 1 kvapka 0,1 % vodného roztoku katiónaktívneho flokulantu Zetag 57. Po 1 hodine státia bola účinnosť odstránenia farby 99,0 % a CHSK = 91 %.The procedure was the same as in Example 1 except that the dye / Fenton reagent solution was exposed to sunlight for 1.5 hours. at a temperature of 10 ° C and that after neutralization 1 drop of a 0.1% aqueous solution of cationic flocculant Zetag 57 was added.
Priemyselná využiteľnosťIndustrial usability
Spôsob podľa vynálezu možno využiť pri čistení nielen priemyselných odpadových vôd, ale aj úžitkových vôd. Túto čistiacu metódu možno využiť v rámci čistiarne odpadových vôd ako jeden zjej stupňov čistenia, pred čistiarňou na predúpravu odpadovej vody, alebo za čistiarňou ako stupeň na dočisťovanie vody pred jej vypustením do recipientu.The process according to the invention can be used in the treatment of not only industrial waste water but also industrial water. This treatment method can be used within a wastewater treatment plant as one of its treatment stages, upstream of the wastewater pre-treatment plant, or downstream of the wastewater treatment plant as a stage to purify the water before it is discharged into the recipient.
Claims (6)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SK1465-97A SK280649B6 (en) | 1997-10-29 | 1997-10-29 | Method for water purification based on the fenton reaction |
| CZ19981383A CZ290006B6 (en) | 1997-10-29 | 1998-05-06 | Water treatment process based on Fenton s reaction |
| AU96602/98A AU9660298A (en) | 1997-10-29 | 1998-10-26 | Method for water purification based on the fenton reaction |
| PCT/SK1998/000016 WO1999021801A1 (en) | 1997-10-29 | 1998-10-26 | Method for water purification based on the fenton reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SK1465-97A SK280649B6 (en) | 1997-10-29 | 1997-10-29 | Method for water purification based on the fenton reaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SK146597A3 SK146597A3 (en) | 1999-05-07 |
| SK280649B6 true SK280649B6 (en) | 2000-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SK1465-97A SK280649B6 (en) | 1997-10-29 | 1997-10-29 | Method for water purification based on the fenton reaction |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU9660298A (en) |
| CZ (1) | CZ290006B6 (en) |
| SK (1) | SK280649B6 (en) |
| WO (1) | WO1999021801A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6596176B1 (en) * | 2001-06-26 | 2003-07-22 | Delozier Ii Gerald Edward | Potable water treatable process using hydrogen peroxide and metallic coagulant |
| AT412470B (en) * | 2003-04-30 | 2005-03-25 | Dauser Industrieanlagen Und Ab | METHOD FOR CLEANING WASTE WATER |
| ES2554460T3 (en) * | 2003-08-22 | 2015-12-21 | Peroxychem Spain, S.L.U. | Method to purify wastewater |
| CN100453472C (en) * | 2004-12-15 | 2009-01-21 | 中国科学院生态环境研究中心 | Method and apparatus for highly efficient removal of water organisms by utilizing photoelectric Fenton reaction |
| CN100366545C (en) * | 2004-12-15 | 2008-02-06 | 中国科学院生态环境研究中心 | Method and apparatus for removing water organisms by utilizing inductive electric Fenton reaction |
| CN101186402B (en) * | 2007-11-27 | 2011-06-01 | 华泰集团有限公司 | Fenton two-stage method oxidation processing technique for paper-making and pulping waste water |
| FR2925482B1 (en) | 2007-12-20 | 2010-01-15 | Otv Sa | METHOD OF TREATING WATER BY ADVANCED OXIDATION AND FLOCCULATION, AND CORRESPONDING TREATMENT PLANT. |
| CN102126802A (en) * | 2011-04-13 | 2011-07-20 | 尹军 | Method for treating domestic sewage by polyaluminium chloride (PAC) coagulant and Fenton reagent jointly utilizing process |
| CN103058294A (en) * | 2011-10-18 | 2013-04-24 | 成都快典科技有限公司 | Sewage treatment process by microwave |
| AR094422A1 (en) * | 2011-10-25 | 2015-08-05 | Basf Se | SUSPENSION CONCENTRATION |
| CN102633335B (en) * | 2012-04-20 | 2013-06-19 | 河北大学 | Sewage treatment method |
| CN102887582A (en) * | 2012-10-18 | 2013-01-23 | 同济大学 | Advanced oxidation water treatment method of Fe0-Al0/O2 system |
| CN103663789A (en) * | 2013-12-11 | 2014-03-26 | 山东华亚环保科技有限公司 | Acid and alkali wastewater treatment method |
| CN104261589A (en) * | 2014-09-29 | 2015-01-07 | 天津大学 | Separated-point inflow type Fenton reagent oxidation treatment device and method for treating wastewater |
| CN105110513A (en) * | 2015-09-23 | 2015-12-02 | 张家港市清泉水处理有限公司 | Electroplating wastewater treatment system and method |
| CN106006820A (en) * | 2016-07-07 | 2016-10-12 | 安徽天顺环保设备股份有限公司 | Environment-friendly sewage treating agent and preparation method thereof |
| CN112678983A (en) * | 2019-10-17 | 2021-04-20 | 中国石油化工股份有限公司 | Wastewater treatment method for removing heavy metals and reducing COD |
| DE102022102849A1 (en) | 2022-02-08 | 2023-08-10 | Bhu Umwelttechnik Gmbh | Process for waste water purification |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS54139258A (en) * | 1978-04-21 | 1979-10-29 | Nippon Peroxide Co Ltd | Sludge disposal method |
| FR2464230A1 (en) * | 1979-08-31 | 1981-03-06 | Ugine Kuhlmann | PROCESS FOR PURIFYING WASTE WATER CONTAINING COLORING MATERIALS |
| US4724084A (en) * | 1986-03-28 | 1988-02-09 | The Boeing Company | System for removing toxic organics and metals from manufacturing wastewater |
-
1997
- 1997-10-29 SK SK1465-97A patent/SK280649B6/en unknown
-
1998
- 1998-05-06 CZ CZ19981383A patent/CZ290006B6/en not_active IP Right Cessation
- 1998-10-26 WO PCT/SK1998/000016 patent/WO1999021801A1/en active Search and Examination
- 1998-10-26 AU AU96602/98A patent/AU9660298A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO1999021801A1 (en) | 1999-05-06 |
| CZ138398A3 (en) | 1999-12-15 |
| WO1999021801B1 (en) | 1999-06-10 |
| SK146597A3 (en) | 1999-05-07 |
| CZ290006B6 (en) | 2002-05-15 |
| AU9660298A (en) | 1999-05-17 |
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