Abstract:

To study on the regulation of sludge multiplication in MBR to treat anaerobically digested piggery wastewater, according to the characters of MBR, a kinetic model for prediction MLVSS in MBR was ascertained. To obtain the kinetic constants in the model, experiments were carried out. Three MBRs with same constitution were adopted. A MBR consists of intermittent aeration zone and membrane separation zone with total volume of 120L. Nine tests were arranged at different HRTs(15h, 20h and 24h) and SRTs(70d, 30d and 50d) respectively. The kinetic constants were calculated using the data from experiments. A kinetic model was satisfactorily employed to predict MLVSS in reactors during experiments.