Design and Operational Performance of a Full Scale MWWTP with EHYBFAS Process

To improve water quality of Buji Stream and Shenzhen River, the Bujihe Wastewater Treatment Plant has been reconstructed from the original coagulkation-flocculation sedimentation system into the enhanced hybrid submerged biofilm-activated sludge (EHYBFAS)system developed by the authors. The main design parameters of the EHYBFAS system, process characteristics, operational performance, techno-economic index, and experience in design, construction and operation are described，which set up an example of the municipal wastewater treatment plants using the novel process of EHYBFAS, which has lots of advantages, such as stable and high operational performance with the final effluent quality well meeting 1A-1B standard of GB 18918-2002( Chinese national standard each one capable of treating 1.0×10⁴ for pollutants of effluent from the MWWTPs), much less footprint of 1ha/(100×103㎥/d)) vs 4-5ha/(100×103㎥/d), much lower capital and operation costs of 700-800 Yuan(RMB)/(㎥/d) and 0.5 Yuan(RMB)/㎥ vs 1200-1500 Yuan/(㎥/d)and 1.0-1.2 Yuan/㎥ and much less sludge production of 0.3g dry solid/g removed BOD₅ vs 0.7 g dry solid/removed BOD5 respectively for the MWWTP with AS process.