The Rotary Trickle-Bed Reactor– A New Reactor Concept for Biological Gas Purification

Gai, Stefan; Krüger, Klaus; Kanne, Lothar; Mohr, Karl‐Heinz

doi:10.1002/1618-2863(200107)1:1<5::aid-elsc5>3.0.co;2-k

Cited by 7 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solutions of sodium hydroxide, sodium chloride, and hydrogen peroxide as well as mixtures thereof were used, resulting in partial or complete inhibition of the microbial activity and in the production of large quantities of waste water. Gai et al [9] proposed a system consisting of rotating packing elements combined with special nozzles for liquid repartition intended to ensure uniform growth conditions for the biofilm. However, discontinuous operation was mandatory, as the system needed to be washed intermittently in order to prevent it from clogging.…”

Section: Introductionmentioning

confidence: 44%

Biological waste gas treatment with a modified rotating biological contactor. Ι. Control of biofilm growth and long-term performance

Vinage

Rohr

2003

Bioprocess Biosyst Eng

View full text Add to dashboard Cite

In this work, we introduce a modified rotating biological contactor (RBC) system and demonstrate its feasibility by applying the newly devised process to the biological treatment of artificial waste gas. In the proposed system, the waste gas is introduced to the bioreactor in the spacings between the rotating discs through a hollow shaft, thus allowing for intimate gas-liquid contact. A 91-l modified RBC containing 20 biofilm support discs 40 cm in diameter was used in the experiments. Toluene was used as the model pollutant, and the system was operated under standard operating conditions for more than one year in order to investigate its long-term performance and assess its ability to control the growth of the biofilm. It was demonstrated that the proposed system allows to efficiently control the growth of the biofilm, thus overcoming the clogging problem inherent in most conventional methods for the biological treatment of waste gas. Moreover, the system was shown to exhibit stationary long-term performance for a period of more than one year, hence indicating its feasibility for industrial application.

show abstract

Section: Introductionmentioning

confidence: 44%

Biological waste gas treatment with a modified rotating biological contactor. Ι. Control of biofilm growth and long-term performance

Vinage

Rohr

2003

Bioprocess Biosyst Eng

View full text Add to dashboard Cite

show abstract

“…In fact, recently, Gai et al 11 employed a rotating trickle-bed reactor for biological gas cleaning. This system consisted of a structured packed bed rotating on a vertically placed shaft, with the liquid and gas being fed from the top.…”

Section: (Vi)mentioning

confidence: 99%

Rotating Biological Contactors: A Review

Patwardhan

2003

Ind. Eng. Chem. Res.

105

View full text Add to dashboard Cite

Rotating biological contactors (RBCs) offer an alternative treatment technology to the conventional activated sludge process. The principal advantages of the RBC stem from the fact that the interfacial area generated is very high and practically independent of the speed of rotation, unlike in the activated sludge process. In the present work, the process design aspects of RBCs are reviewed. The published literature on various aspects such as media employed in RBCs, hydrodynamic characteristics, power consumption, and mass-transfer characteristics is reviewed. The various models proposed for the design of RBC systems are reviewed. A stepwise procedure is given for the process design of an RBC system. The RBC system is compared with the other wastewater treatment facilities such as the activated sludge process and trickling filters in terms of its oxygen-transfer efficiency.

show abstract