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- Title
Moving bed bio trickling filters: an innovative solution for hydrogen sulphide removal from gas streams.
- Authors
Spennati, F.; Mannucci, A.; Mori, G.; Giordano, C.; Munz, G.
- Abstract
This work reports the results of the first worldwide full scale application of the concept of MBBTF (moving bed bio trickling filter) applied to biological gas treatment. A full scale prototype of an innovative MBBTF for for gaseous effluents treatment was designed and installed in a tannery wastewater treatment plant (Cuoiodepur, Pisa, Italy). The prototype was operated for 9 months with empty bed retention time of 3.5 s and treated 8000 m³ h–1 of a gaseous stream with a concentration of hydrogen sulphide up to 300 mg S m–3 (in average 170 mg S m–3). The removal efficiency was on average 80% and the highest elimination capacity (EC) was 18 kg S-H2 S d–1 (corresponding to a specific EC of 90 g H2 S m–3 bed h–1). The rotation of the bed was demonstrated to be a suitable solution to promote the detachment of the biomass and, thus, to control the pressure head losses caused by the biofilm growth. The start up phase lasted 2 weeks and, the role of several process parameters (including pH, recirculated water flow rate and rotation frequency) was evaluated.
- Subjects
HYDROGEN sulfide; MOVING bed reactors; WATER purification; SEWAGE disposal plants; TRICKLING filters; RF values (Chromatography)
- Publication
Desalination & Water Treatment, 2017, Vol 61, p215
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2016.11138