Cyanobacterial management in full-scale water treatment and recycling processes: reactive dosing following intensive monitoring

摘要: The presence of cyanobacteria within full-scale treatment plants including spent filter backwash water and sludge facilities is an increasing problem faced by utilities. fate cyanobacterial associated taste odour (T&O) compounds during these processes unknown. This study aimed to better understand the occurrence T&O compounds, 2-methylisoborneol (MIB) geosmin, a additional plant with recycling investigate effectiveness supplementary applied following results intensive real time sampling. Samples were obtained from source at key points train, thickener where MIB was noted reach approximately 1500 ng L−1. Potassium permanganate powdered activated carbon dosed into concentration producing cells in reduced greater than 99%. However, concentrations still measured 20 L−1 finished water, attributed addition recycled thickener. A correlation between total sample fluorescence established used guide chemical dosing maintain low levels. These demonstrate that situ probes could be optimise application potassium when reduce reducing however further investigation would required.