Paper Information

Journal:   IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING (IJEHSE)   FALL 2007 , Volume 4 , Number 4; Page(s) 229 To 234.
 
Paper: 

UPGRADING AN EXISTING WASTEWATER TREATMENT PLANT BASED ON AN UPFLOW ANAEROBIC PACKED-BED REACTOR

 
 
Author(s):  MAHVI A.H.*, MESDAGHINIA S., SAEIDI REZA
 
* DEPARTMENT OF ENVIRONMENTAL HEALTH ENGINEERING, SCHOOL OF PUBLIC HEALTH AND CENTER FOR ENVIRONMENTAL RESEARCH, MEDICAL SCIENCES/UNIVERSITY OF TEHRAN, TEHRAN, IRAN
 
Abstract: 

The performance of an up flow anaerobic packed-bed reactor in the upgrading of Parkandabad (Mashhad, north east of Iran) wastewater treatment plant was studied in a pilot plant. The experiments were performed at hydraulic retention times of 6, 12, 18 and 24h based on empty reactor volume and the performance of the reactor was evaluated based on the removal of organic matter (BOD5 and COD) and SS. The average BOD5 and COD removal efficiencies were in the ranges of 79.0-89.3% and 75.7-87.2%, respectively, depending on HRT. The relationship between the organic loading rate and organic removal rate was linear in the loading range of 0.52-2.10kg BOD5/m3.d. The average SS removal efficiencies at hydraulic retention times of 6, 12, 18 and 24h were obtained to be 82.9, 83.6, 81.2 and 87.4%, respectively. The results indicated that the reactor in combination with existing biological treatment process (completely mixed aerated lagoon) can produce a high quality effluent.

 
Keyword(s): WASTEWATER TREATMENT, UPGRADING, UPFLOW ANAEROBIC PACKED-BED REACTOR
 
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