Study on Catalyst for Catalytic Ozonation to Leachate and Catalytic Process

Abstract:

Five kinds of catalyst were prepared with Chromium, cadmium, cobalt, copper, nickel loading on the γ–Al₂O₃. Catalyst loading rate, effects to the ozone suction rates and water quality change situation of catalytic ozonation to leachate were studied. It can be found that when the mO₃/mCOD equaled 0.11, 0.15 and 0.26 separately, and mCatalyst/mCOD fixed at 5, the cobalt has the highest loading rate, the cadmium catalyst could improve the ozone absorption rate, the chromium catalyst makes against the ozone absorption rate, the copper catalyst can increase the COD removal rate and the nickel catalyst has advantages for the NH₃–N removal rate. Results indicate that: the leachate COD removal rate increased by 20.2 percent by the copper catalyst adding and the NH₃–N removal rate rise 20.7 percent with the nickel catalyst; the best dosage of the ozone in catalytic ozonation is mO₃/mCOD at 0.12 to 0.13; the degree of oxidation is exited.

• Periodical: Advanced Materials Research (Volumes 989-994)
• Pages: 783-788
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.989-994.783
• Online since: July 2014
• Authors: Bao Jun Jiang*, Zhu Jun Tian, Jin Ming Jiang
• Keywords: Catalytic Ozonation, Leachate, Mcatalyst/Mcod, mO₃/mCOD

References

[1] SHEN Dong-sheng, HE Ruo and LIU Hong-yuan. Biological Treatment Technology for Landfill [M]. Chemical Industry Press, Beijing, 2003: 45–46.

[2] WANG Bao-zhen, WANG Lin. Municipal Solid Waste Leachate Treatment and Disposal [M] . Chemical Industry Press, Beijing. 2005: 78–79.

[3] SHEN Xiao-xing, CHEN Zhe-ming and FANG Shi. Treatment of stabilized landfill leachate by coagulation–catalytic ozonation processes[J]. Journal of Zhejiang university (Agric．&Life Sci), 2006, 32(4): 49–454.

[4] ZHANG Ji-guang. Catalyst preparation process technology[M]. China Petroleum and Chemistry Press, Beijing 2004: 101–102.

[5] Preparation of Ag A l2O3 selective catalytic reduction monolithic catalyst[J]. J T singhua U n iv(Sci&T ech), 2008, 48(6): 1004–1007.

[6] MA Jun, ZHANG Tao and CHEN Zhong-lin. Path way of Aqueous Ferric Hydroxide Catalyzed Ozone Decom positionand Ozona–tion of Trace NitrObenzene[J]. Environmental Scinece, 2005, 26(2): 78–82.

[7] Legube B, Karpel N, Vel Leitner. Catalytic ozonation: a promising advanced oxidation technology for water tratment[J]. Catalysis Today, 1999, 53: 61–72.

DOI: 10.1016/s0920-5861(99)00103-0

[8] LI Yu and ZHANG Rong. Co / B i catalyst for catalytic wet air oxidation of ammonia–nitrogen degradation of landfill leachate[J]. Chemical Journal of Chinese Universities, 2005, 26(3): 430–435.

[9] LI Jing and LIU Guo-rong. Application ofAdvanced Oxidation Technologieswith O3toWastewater Treatmen[J]. Pollution Control Technology, 2007, 20(6): 55–58.

[10] LIU Wei-hua, JI Min and ZHANG Xin. study on catalyzing ozone oxidation elimination trash infiltration fluid difficult to degrade the organic matter[J]. Environmental Chemistry, 2007, 26(1): 58–61.