Treatment of wastewater containing Cl2 residue by packed cage rotating biological contactor (RBC) system

Bioaugmentation of a rotating biological contactor for degradation of 2-fluorophenol

“…Rotating biological contactors (RBCs) are bioreactor systems with high biomass retention that are extremely promising for such situations. These systems constitute a very attractive technology for low cost wastewater treatment due to operational features such as short hydraulic retention times, excellent capacity to deal with shock and toxic loadings, simple design and operation, high treatment efficiency and low energy requirement (Chowdhury et al, 2010;Cortez et al, 2008;Sirianuntapiboon, 2006). RBCs have been successfully used to treat several organopollutants, such as chlorophenols, phenol and trichloroethylene (Alemzadeh et al, 2002;Brar and Gupta, 2000;Majumber and Gupta, 2007;Sahinkaya and Dilek, 2006).…”

Rotating biological contactors: a review on main factors affecting performance

“…Besides they have low energy consumption and the fabrication cost is nearly one third that of discs (Ware et al 1990;Mathure and Patwardhan 2005). Different types of packing such as Pallrings, saddles and cylindrical plastic elements with distinctive sizes have been applied in random packed RBC systems presenting attractive results (Nahid et al 2001;Mathure and Patwardhan 2005;Sirianuntapiboon 2006). Whilst the use of random packed media is not new, few manufacturers are commercially exploiting it.…”

“…Due to the large amount of biological mass present (low operating feed/microorganisms) RBCs offer good stability under high or toxic hydraulic and organic loadings (Sirianuntapiboon 2006). …”

“…In spite of all of the referred advantages, RBCs have some operating problems such as difficulty in maintenance of an appropriate biofilm thickness under adverse conditions (Sirianuntapiboon 2006). Mechanical failures are also commonly pointed to RBCs.…”

Attached-growth bioreactors for syngas fermentation to biofuel

“…With regard to support media of RBCs, random packed cage configurations have been successfully used as substitutes for conventional individual rigid discs or disc packets in wastewater treatment plants because they provide larger support area for biofilm attachment within the same reactor size, contribute to higher mass transfer efficiency due to the increased turbulence and have lower energy consumption and fabrication cost (Mathure and Patwardhan 2005;). Random-packed-cage type RBCs with various packing media have been applied extensively in wastewater treatment (Nahid et al 2001;Sirianuntapiboon 2006;Sirianuntapiboon and Chuamkaew 2007), but rarely in syngas fermentation.…”