Możliwość zastosowania odczynnika Fentona w procesach usuwania formaldehydu ze ścieków pochodzących z przemysłu drzewnego

• Autorzy: Dębowski M. , Zieliński M. , Dudek M. , Grala A.

Warianty tytułu

EN

Application of Fenton reagent in the process of formaldehyde removal from the timber industry wastewater

• Języki publikacji: PL

Abstrakty

EN

The aim of this study was to determine the possibility of degradation of formaldehyde in the effluents from the timber industry with Fenton's reagent. Effluent from the timber industry are characterized by a high concentration of organic compounds and formaldehyde as an obstacle to the purification of wastewater using microorganisms and therefore an alternative to biological methods is the use of solutions based on chemical methods. In recent years, considerable attention is given to testing and implementation of the so-called advanced oxidation methods (Advanced Oxidation Processes - AOPs). A common feature of these systems is that they allow the generation of highly reactive hydroxyl radicals OH center dot with 2,8 V oxidation potential, which react with almost all organic compounds. Fast-paced distribution of impurities, versatility and high efficiency make advanced oxidation methods are now increasingly considered as a promising alternative compared to conventional methods, techniques, wastewater and sludge treatment Wastewater used in the study came from the wood of an industrial plant where the business is the manufacture of chipboard. The study was conducted in three phases with different type of chemical reactants introduced into the technological system. In the first stage reactor was dosed only iron ions Fe³⁺, H₂O₂ in the second stage, while the third part of an experiment to test the Fenton reagent treatment was introduced Fe³⁺ /H₂O₂. Each stage is divided into five variants. The criterion for division of the variants was the dose of chemical reagents. The study confirmed the applicability of advanced oxidation technologies based on Fenton's reagent in the process of degradation of formaldehyde. It was found that the efficiency of removal of contaminants from wastewater was directly connected with the dose of chemical reagents introduced into the technological system. It was also noted that increasing the dose above the Fenton reagent Fe³⁺ 0,3 g /l and 3,0 g H₂O₂/l does not significantly affect the final results of the purification process. The highest results were obtained in the technology used in doses of 0,3 g Fe ³⁺/l and 3,0 g H₂O₂ /l to 0,6 g Fe³⁺/l and 6,0 g H₂O₂/l. Limiting values of COD in the experimental variants was approximately 70,0% while the concentration of formaldehyde close to 60,0%. If dispensing the water only Fe³⁺ ions obtained the highest efficiency and reduce the COD concentration of formaldehyde was 28,3% sequentially and 14,5%. The final concentrations of the analyzed indicators of pollution, if only H₂O₂ dosing were similar to their concentrations in raw wastewater.

Słowa kluczowe

EN

degradation; Fenton's reagent; constant magnetic field

• Wydawca: Politechnika Koszalińska
• Czasopismo: Rocznik Ochrona Środowiska
• Rocznik: 2012
• Tom: Tom 14
• Strony: 587--596
• Opis fizyczny: Bibliogr. 15 poz., tab., rys.

Twórcy

autor

Dębowski M.

• Uniwersytet Warmińsko-Mazurski Olsztyn

autor

Zieliński M.

• Uniwersytet Warmińsko-Mazurski Olsztyn

autor

Dudek M.

• Uniwersytet Warmińsko-Mazurski Olsztyn

autor

Grala A.

• Uniwersytet Warmińsko-Mazurski Olsztyn

Bibliografia

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