[Home ] [Archive]    
:: Volume 2, Number 3 (Summer 2015) ::
IAHS 2015, 2(3): 115-120 Back to browse issues page
Biological Sludge Stabilization Fenton and Ozonation Processes
Miranzadeh M.B., Mazaheri Tehrani A., Tavakoli Z. *1, Gilasi H.R.2, Atharizadeh M.3
1- MSc Environmental Health Engineering Department, Health Faculty, Kashan University of Medical Sciences, Kashan, Iran , zahratavakoli1390@yahoo.com
2- PhD
3- MSc
Abstract:   (1216 Views)

Aims: In biological wastewater treatment processes, a large amount of sludge is produced. Stabilization of sludge is essential before disposal because of the risks to human health and environment. Therefore, selecting an appropriate process for stabilization this sludge may efficiently decrease risks. The aim of this study was to examine the compound efficiency of the advanced Fenton and ozonation oxidation processes in stabilization of biological sludge.

Instrument & Methods: This experimental study was conducted on raw sludge taken from Kashan University of Medical Sciences’ Wastewater Treatment Plant in Iran during 2014. Fenton and ozonation oxidation processes were used for sludge stabilization. H2O2 and Fe2+ concentration, along with their mutual interaction, were measured using repeated measures model. Then the effects of pH and time reaction on reduction efficiency of volatile solids (VS) were examined.

Findings: The maximum removal efficiencies in Fenton process at pH=3 and in ozonation process in pH=7 were obtained 85.1% and 92.9%, respectively. By increasing the reaction time from 30 to 90min, VS reduction efficiency in Fenton and ozonation processes increased and then reduced after 60min. The maximum reduction efficiencies of VS were obtained at 3000mg/l H2O2 concentration, So that the optimum ratio of Fe2+/H2O2 for sludge stabilization was 1000/3000mg/l with the efficiency of 91.5%.

Conclusion: Ozonation process efficiency in stabilizing biological wastewater sludge is higher than that of Fenton process.

Keywords: Waste Water, Sewage, Fenton's Reagent, Ozonation
Full-Text [PDF 526 kb]   (457 Downloads)    
Article Type: Original Research | Subject: Environmental Health
Received: 2015/07/5 | Accepted: 2015/08/19 | Published: 2015/08/19
Send email to the article author

Add your comments about this article
Your username or email:

Write the security code in the box >

DOI: 10.7508/iahs.2015.03.004

XML     Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Miranzadeh M.B., Mazaheri Tehrani A., Tavakoli Z., Gilasi H.R., Atharizadeh M.. Biological Sludge Stabilization Fenton and Ozonation Processes. IAHS. 2015; 2 (3) :115-120
URL: http://iahs.kaums.ac.ir/article-1-60-en.html
Volume 2, Number 3 (Summer 2015) Back to browse issues page
International Archives of Health Sciences
Persian site map - English site map - Created in 0.176 seconds with 809 queries by yektaweb 3395