AWWA MTC57585

The use of membrane bioreactors offers a considerable improvement in process stability andeffluent quality for small-scale wastewater treatment plants (Q < 8 m^2/d). The treatmentperformance of four different in-building membrane bioreactors (Busse-MF of Busse GmbH,Germany) was found to be considerably better than the minimum required by German DIN4261 part 2. Apart from carbon removal, a stable nitrification and even a partial denitrificationwas observed. The hygiene quality of the treated wastewater is such that a reuse of the water,e.g. for irrigational use, can be recommended. Due to very low sludge production rates it waspossible to operate the bioreactor for ca. 450 days without withdrawal of excess sludge. Forup to one year this seems to be reasonable when varying MLSS concentrations can betolerated. For MLSS concentrations of up to ca. 35 g/L, no oxygen limitation due to adecrease in oxygen mass transfer was observed in the Busse-MF. Includes 8 references, tables, figures.

Product Details

Edition:

Vol. - No.

Published:

03/05/2003

Number of Pages:

9

File Size:

1 file , 280 KB