[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 17, Issue 2 (Bimonthly 2013) ::
Feyz 2013, 17(2): 157-164 Back to browse issues page
Evaluation of phosphorus removal from filtered effluent of activated sludge using the electrochemical process
DavarKhah Rabbani, Faezeh Rashidipour *, Hosein Akbari, Gholam Reza Mostafaii, Rohollah Dehghani
Kashan University of Medical Sciences , kashanfaezeh@gmail.com
Abstract:   (3967 Views)

Background: Phosphorus (in a concentration range of 0.005-0.05 mg/L-P) is enough for eutrophication of water bodies therefore, phosphorus removal from effluents is necessary. The electrochemical process is one of the methods used for phosphorus removal. Thus, this study aimed to examine the effect of the electrochemical process on phosphorus removal from filtered effluent of activated sludge.

Materials and Methods: This bench-scale experimental study was carried out on the samples of filtered effluent of activated sludge in a batch system. Phosphorus concentrations for 210 samples were measured through stannous-chloride method (The Standard Method, 4500 P-D.). Data were analyzed using Green house Geisser, one-way ANOVA and the Tukey’s post- hoc tests.

Results: The average phosphorus concentration before the electrochemical process in the filtered samples and the maximum efficiency of phosphorus removal were 1.93±0.86 mg/L-P and 98%, respectively. The residual phosphorus concentrations (electrical current ≥0.3A, reaction time ≥10min) in all samples were decreased to less than 1mg/L-P.

Conclusion: Results showed that the electrochemical process can decrease the residual phosphorus to less than the standard limit (1mg/L-P) in Iran. The plot for the average residual phosphorus concentrations versus reaction time is a straight line (R²=0.837). Phosphorus removal from the samples of filtered effluent of activated sludge is considered as a second-order reaction and the fitted model can be formulated as y= -0.001x2 + 0.133x + 0.875 (R²=0.925).

Keywords: Wastewater, Phosphorus, Electrochemical process
Full-Text [PDF 293 kb]   (1019 Downloads)    
Type of Study: Research | Subject: General
Received: 2013/05/11 | Accepted: 2013/05/15 | Published: 2013/05/15
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML   Persian Abstract   Print


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

Rabbani D, Rashidipour F, Akbari H, Mostafaii G R, Dehghani R. Evaluation of phosphorus removal from filtered effluent of activated sludge using the electrochemical process. Feyz. 2013; 17 (2) :157-164
URL: http://feyz.kaums.ac.ir/article-1-1916-en.html


Volume 17, Issue 2 (Bimonthly 2013) Back to browse issues page
مجله علمی پژوهشی فیض ::: دانشگاه علوم پزشکی کاشان KAUMS Journal ( FEYZ )
Persian site map - English site map - Created in 0.06 seconds with 32 queries by YEKTAWEB 3937