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Paper Information

Journal:   INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST)   SPRING 2011 , Volume 8 , Number 2 (30); Page(s) 417 To 424.
 
Paper: 

INNOVATIVE ANAEROBIC UP FLOW SLUDGE BLANKET FILTRATION COMBINED BIOREACTOR FOR NITROGEN REMOVAL FROM MUNICIPAL WASTEWATER

 
 
Author(s):  KHORSANDI H.*, MOVAHEDYAN H., BINA B., FAROKHZADEH H.
 
* DEPARTMENT OF ENVIRONMENTAL HEALTH ENGINEERING, URMIA UNIVERSITY OF MEDICAL SCIENCES, URMIA, IRAN
 
Abstract: 

In this research, a novel laboratory scale anaerobic/upflow sludge blanket filtration combined bioreactor was designed and operated to improve the efficiency of the upflow sludge blanket filtration process for the simultaneous removal of phosphorus and nitrogen from wastewater. The anaerobic/upflow sludge blanket filtration technique was developed by adding an anaerobic reactor to its influent and operated by varying the main process parameters in order to gain the optimum conditions. The results showed that biological removal efficiency of nitrogen and preservation of sludge blanket strongly depend on wastewater characteristics, hydraulic retention time, sludge age and process controlling parameters. The combined bioreactor performed a total nitrogen removal efficiency of 96.6% with the sludge age of 25 days, total hydraulic retention time of 24 h and optimum “chemical oxygen demand/nitrogen/phosphorus” ratio of 100/ 5/1. This ratio also improved the compaction quality of sludge blanket in the upflow sludge blanket filtration clarifier.
The average specific nitrification and denitrification rates occurred during the process can be expressed as 4.43 mg NOx- N produced/g VSS. d and 5.50 mg NOx-N removed/g VSS. d at the optimum ratio, respectively. To avoid sludge rising due to denitrification process, the optimum total hydraulic retention time of 16 to 24 h was achieved based on the effluent quality. This study suggested that the anaerobic/upflow sludge blanket filtration bioreactor at the optimum operational conditions can be an effective process for removal of nutrients from municipal wastewater.

 
Keyword(s): BIOREACTOR, MUNICIPAL WASTEWATER, NUTRIENTS, UPFLOW SLUDGE BLANKET FILTRATION
 
 
References: 
 
Citations: 
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APA: Copy

KHORSANDI, H., & MOVAHEDYAN, H., & BINA, B., & FAROKHZADEH, H. (2011). INNOVATIVE ANAEROBIC UP FLOW SLUDGE BLANKET FILTRATION COMBINED BIOREACTOR FOR NITROGEN REMOVAL FROM MUNICIPAL WASTEWATER. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), 8(2 (30)), 417-424. https://www.sid.ir/en/journal/ViewPaper.aspx?id=189886



Vancouver: Copy

KHORSANDI H., MOVAHEDYAN H., BINA B., FAROKHZADEH H.. INNOVATIVE ANAEROBIC UP FLOW SLUDGE BLANKET FILTRATION COMBINED BIOREACTOR FOR NITROGEN REMOVAL FROM MUNICIPAL WASTEWATER. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST). 2011 [cited 2021October24];8(2 (30)):417-424. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=189886



IEEE: Copy

KHORSANDI, H., MOVAHEDYAN, H., BINA, B., FAROKHZADEH, H., 2011. INNOVATIVE ANAEROBIC UP FLOW SLUDGE BLANKET FILTRATION COMBINED BIOREACTOR FOR NITROGEN REMOVAL FROM MUNICIPAL WASTEWATER. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), [online] 8(2 (30)), pp.417-424. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=189886.



 
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