A new way of tracking how sewage sludge flows during thermal treatment could help engineers design better wastewater treatment plants and boost production of biogas. Researchers at RMIT University in Melbourne, Australia, demonstrated how the flow behaviour of sludge can be used as a tool to gauge how quickly organic matter is dissolving at high temperatures, paving the way for online monitoring of process performance. The study, published in Water Research, found a correlation between how sludge dissolves and changes in its flow behaviour, indicating it may be possible to monitor thermal treatment performance simply by tracking the flow. More >>