Volume 15, Issue 3 (Pajouhan Scientific Journal, Spring 2017)                   Pajouhan Sci J 2017, 15(3): 1-9 | Back to browse issues page

XML Persian Abstract Print

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

Shokoohi R, Dargahi A, Karami A, Mohammadi M. Application of response surface method to compare the performance of Wetland and extended aeration system for the removal of organic matter from sanitary wastewater . Pajouhan Sci J 2017; 15 (3) :1-9
URL: http://psj.umsha.ac.ir/article-1-359-en.html
1- Department of Environmental Health Engineering, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran
2- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran , a.dargahi29@yahoo.com
3- Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran
4- . Department of Environmental Health Engineering, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
Abstract:   (5509 Views)

Introduction: Organic compounds are one of the most important quality characteristics in wastewater treatment. The aim of this study is to make comparison of the efficiency of wetland and extended aeration activated sludge in the removal of organic compounds from sanitary wastewater based on response surface methodology.

Methods: In this experimental study 100 mixed samples were taken from wetland and extended aeration reactors. According to type of wastewater treatment and operating time, COD, BOD5 and TSS were measured. Sampling, transportation, storage and measurement performed according to standard methods. Experiment setting, modeling, removal equation of organic compounds and optimal condition was obtained by response surface methodology.

Results: Maximum removal of COD, BOD5 and TSS (in summer) in wetland were 95.67, 93.4 and 87.41%; in extended aeration was 97, 65.1 and 80.2%, respectively. Efficiency of extended aeration was better than wetland in all seasons and all parameters. R2: 0.8- 0.89 confirms the effect of operating time on wastewater treatment efficiency. Validity and accuracy in wetland and extended aeration were 12.64-17.65 and 16.01-19.37, respectively. Removal model in both wetland and extended aeration was linear.

Conclusion: Efficiency of extended aeration is more than wetland. Response surface methodology properly describes organic compound removal efficacy by extended aeration and wetland.

Full-Text [PDF 639 kb]   (2602 Downloads)    
Type of Study: Research Article | Subject: Health Sciences
Received: 2017/01/6 | Accepted: 2017/02/14 | Published: 2017/04/26

Add your comments about this article : Your username or Email:

Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | Pajouhan Scientific Journal

Designed & Developed by : Yektaweb