Greywater is an excellent resource for service water in intra-urban reuse. By substituting fresh water with appropriately treated greywater, it is possible to save 30–50% of fresh water. In this paper, an up-flow pilot biological aerated filter (BAF) is tested for the treatment of synthetic greywater and the design parameters are determined. An organic load of 8 kg COD/(m3 d) allows to achieving a good effluent quality with regard to COD, suspended solids, and anionic surfactants. By reducing the organic load to 5 kg COD/(m3 d) full nitrification is achieved as well. A process set-up for a full-scale BAF greywater treatment plant is proposed and dimensioned using the parameters from the pilot plant tests. Here, the required specific volume is approx. 3 L/C for the reactor and 16 L/C for the storage tanks. This feature make the BAF a compact process which can be successfully integrated in intra-urban water reuse schemes.
Research Article|December 01 2010
Greywater treatment with biological aerated filter (BAF) for urban water reuse
Water Science and Technology: Water Supply (2010) 10 (6): 907-914.
A. Meda, P. Cornel; Greywater treatment with biological aerated filter (BAF) for urban water reuse. Water Science and Technology: Water Supply 1 December 2010; 10 (6): 907–914. doi: https://doi.org/10.2166/ws.2010.627
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