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:: Volume 16, Issue 1 (Bimonthly 2012) ::
Feyz 2012, 16(1): 71-78 Back to browse issues page
A comparison between advanced O3/UV and H2O2/UV oxidation processes for the treatment of municipal solid waste leachate
Gholam Reza Mostafaii, Rohollah Dehghani, Mojtaba Hasanzadeh *, Sayyed Gholam Abbas Mousavi
Kashan University of Medical Sciences , hasanzade1986@yahoo.com
Abstract:   (5684 Views)

Background: The solid-waste leachate is a type of wastewater with high concentration of mineral and organic compounds. There is little information about the effect of the advanced oxidation processes for the treatment of municipal solid-waste leachate. Thus, this study aimed to evaluate the effectiveness of processing advanced oxidation method as a biological pre-treatment for municipal solid waste.

Materials and Methods: This bench-scale experimental study was conducted in a closed batch system on leachate samples of Kahrizak landfill (Tehran). After obtaining the optimal conditions for the O3/UV and H2O2/UV processes, the effect of each process on 20 leachate samples was assessed and for each sample, 4 different reaction times were studied for the removal of BOD5, COD, TS and color. The results were compared using the mixed-design ANOVA model.

Results: The BOD5, COD and TS in raw leachate were 2500, 21910 and 29347 mg/l, respectively. The O3/UV and H2O2/UV processes removed 87% and 73% of COD, respectively. The BOD5/COD ratio in the O3/UV and H2O2/UV processes increased from 0.11 to 0.33 and 0.11 to 0.12, respectively. Moreover, the color in the O3/UV and H2O2/UV processes decreased from 82 to 67.25% and 81.65%, respectively.

Conclusion: The O3/UV process can be used as a biological pre-treatment. The optimum pH for this process is 8.5, the optimum ozone concentration is 60.1 g/kg of decreased COD and the best reaction time which increases the BOD5/COD ratio more than 0.25 and less expensive than other reaction times, is 10 minutes.

Keywords: Solid waste leachate, Advanced oxidation, Pretreatment, BOD5/COD ratio
Full-Text [PDF 287 kb]   (2606 Downloads)    
Type of Study: Research | Subject: General
Received: 2012/01/10
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Mostafaii G R, Dehghani R, Hasanzadeh M, Mousavi S G A. A comparison between advanced O3/UV and H2O2/UV oxidation processes for the treatment of municipal solid waste leachate. Feyz. 2012; 16 (1) :71-78
URL: http://feyz.kaums.ac.ir/article-1-1377-en.html


Volume 16, Issue 1 (Bimonthly 2012) Back to browse issues page
مجله علمی پژوهشی فیض ::: دانشگاه علوم پزشکی کاشان KAUMS Journal ( FEYZ )
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