Effects of pretreatment of dye wastewater using iron filings filtration and H2O2

• Autorzy: Ruixia H. , Peng L. , Yuwen Z. , Shuiyuan C.
• Konferencja: Proceedings of the German-Chinese-Polish Symposium Environmental Engineering
• Języki publikacji: EN

Abstrakty

EN

China is the largest country in the world in production and exportation of dye. The wastewater from dye producing process is a serious source of pollution in natural water resources. Its ingredients are very complex and harmful to the environment. Most of the ingredients are man-made synthetic chemical materials that are very difficult to biodegrade, which makes bio-treatment methods inefficient. At present, there are no satisfactory methods for the treatment of the wastewater. This paper reports the result of pre-treating the dye wastewater by an Iron Filings Filter (IFF) + H2O2. Micro electrolysis action takes place with the IFF and produces Fe2+ ions, which form the Fenton oxidation reagent with added H2O2 in the influent. This can break and change the long-chains and link structures of the dye molecules or pollutants into biodegradable materials so that this wastewater may be further treated easily by biological methods. When only using the Iron Filings Filter (IFF), the BODs/COD value of the effluent increased by 0.2-0.3 more than that of the original wastewater at pH4 and hydro-remain time (HRT) 8 min. When 30%H2O2 was added to the influent at a rate of 8%o, the biodegradation of this wastewater was greatly improved so that bio-treatment is shown to be more efficient by using both IFF and H2O2.

Słowa kluczowe

EN

dye wastewater; Iron Filings Filter; Fendon Oxidation; biodegradation

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Inżynieria Środowiska / Politechnika Opolska
• Rocznik: 2003
• Tom: Vol. 291, z. 4
• Strony: 277--282
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr.

Twórcy

autor

Ruixia H.

• The College of Architecture and Civil Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing, P.R.China

autor

Peng L.

• The College of Architecture and Civil Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing, P.R.China

autor

Yuwen Z.

• The College of Architecture and Civil Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing, P.R.China

autor

Shuiyuan C.

• The College of Architecture and Civil Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing, P.R.China

Bibliografia

• 1. Wei.Z.H. etal.,: Advances on the treatments of bio-refractory poisonous organie pollutantsin wastewater, Chongqing Environmenta! Science(1998).
• 2. Zhao,Q.X. et al.: Strategies for treatment of bio-refractory organie pollutants, Environmental Protection of Chemical Industry (1995).
• 3. Han H.J.: Researches on the dyeing wastewater treatment with iron chips and carbon particles, Industrial Water Treatment (1997).
• 4. Hao,R.X., Zhao.Y.ing, Lou.R.M. et al.: Study on treatment process of dyeing wastewater using Iron Filings Filtration-SBR method, Environmental Science (1998).
• 5. Gu.L.G., Huang,X.J.and Liu.D.H.: Internal electrolysis process for treatment industrial wastewater, Shanghai Environmental Science (1998).
• 6. He.Y.L.and Qiu,R.C.: Woollen mili wastewater treatment by iron chip filter-activated sludge process, Technology of Water Treatment(1993).
• 7. Xiao,Y.T.andXu,J.H.: Application of Fenton’ reagent in pre-treating refractory dinitro-chlorobenzene wastewater, Chongging Environmental Science(1997).