Development of an efficient process for ammonia removal using membrane contactors
Abstract
In the present project the removal of ammonia from anaerobic digester effluent using membrane contactor will be investigated. For mass transfer, hollow fibre membrane contactors offer a multitude of advantages compared to stripping technology. In conventional applications of membrane contactors the ammonia rich solution circulates trough the fibres. For this kind of application the very high content of suspended solids in digester effluents requires an additional removal step to guarantee undisturbed operation conditions. In a new approach the membrane fibres were simply submerged into the anaerobic digestate and the performance should be investigated at moderate temperatures from 20 - 40°C and pH values from 8.7 to 10.0. This new approach can be applied efficiently for the treatment of particle rich solutions with high ammonia concentrations of 3.000 - 3.500 mg/L, whereas removal rates from 80 up to 98.5% will be obtained. The mass transfer coefficients are in the range of 12.4 - 37.0 x 10-3 m/h and absolutely comparable to values from literature
keywords Ammonia removal Membrane contactors Wastewater treatment Anaerobic digestion
Publikationen
Ammoniaktransfer in hydrophoben Membranen
Autoren: Lauterböck, B; Germ, T; Fuchs, W Jahr: 2011
Conference & Workshop proceedings, paper, abstract
Project staff
Werner Fuchs
Ao.Univ.Prof. Dipl.-Ing. Dr.nat.techn. Werner Fuchs
werner.fuchs@boku.ac.at
Tel: +43 1 47654-97401, 97423
Project Leader
01.10.2010 - 31.12.2013