title: A new hybrid treatment system of bioreactors and electrocoagulation for superior removal of organic and nutrient pollutants from municipal wastewater.
abstract: This paper evaluated a novel pilot scale hybrid treatment system which combines rotating hanging media bioreactor (RHMBR), submerged membrane bioreactor (SMBR) along with electrocoagulation (EC) as post treatment to treat organic and nutrient pollutants from municipal wastewater. The results indicated that the highest removal efficiency was achieved at the internal recycling ratio as 400% of the influent flow rate which produced a superior effluent quality with 0.26mgBOD5L(-1), 11.46mgCODCrL(-1), 0.00mgNH4(+)-NL(-1), and 3.81mgT-NL(-1), 0.03mgT-PL(-1). During 16months of operation, NH4(+)-N was completely eliminated and T-P removal efficiency was also up to 100%. It was found that increasing in internal recycling ratio could improve the nitrate and nitrogen removal efficiencies. Moreover, the TSS and coliform bacteria concentration after treatment was less than 5mgL(-1) and 30MPNmL(-1), respectively, regardless of internal recycling ratios and its influent concentration.
authors.affiliation: Department of Chemical Engineering, Dankook University, Republic of Korea. Electronic address: nguyensyduc@gmail.com.
authors.forename: Dinh Duc
authors.initials: DD
authors.lastname: Nguyen
authors.affiliation: School of Civil and Environmental Engineering, University of Technology, Broadway, Sydney, NSW 2007, Australia.
authors.forename: Huu Hao
authors.initials: HH
authors.lastname: Ngo
authors.affiliation: Department of Chemical Engineering, Dankook University, Republic of Korea. Electronic address: chemyoon@unitel.co.kr.
authors.forename: Yong Soo
authors.initials: YS
authors.lastname: Yoon
mesh_terms: D000641:Ammonia / Q000302:isolation & purification; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors; D002947:Cities; D004564:Electrocoagulation / Q000379:methods*; D009566:Nitrates / Q000032:analysis; D009584:Nitrogen / Q000302:isolation & purification; D010710:Phosphates / Q000302:isolation & purification; D010758:Phosphorus / Q000302:isolation & purification; D010865:Pilot Projects; D059027:Recycling; D056910:Republic of Korea; D014835:Volatilization; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods*
chemical_list: D000641:Ammonia; D009566:Nitrates; D009584:Nitrogen; D010710:Phosphates; D010758:Phosphorus; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Integrated hybrid system; Internal recycling ratio; Municipal wastewater; Nitrogen; Phosphorus