Dewatering of sewage sludge is an important part of proper sludge management practice. It is becoming a more challenging issue for water industries as new regulations on sludge disposal are being imposed. In this paper, the application of mechanical thermal expression (MTE) to dewater sewage sludge and the conditioning of sludge by mixing with brown coal are investigated. Raw sludge, sludge flo...

Dewatering of sludge from sewage treatment plants is proving to be a significant challenge due to the large amounts of residual sludges generated annually. In recent years, research and development have focused on improving the dewatering process in order to reduce subsequent costs of sludge management and transport. To achieve this goal, it is necessary to establish reliable indices that refle...

This research paper evaluates hydrothermal carbonization (HTC) as a possible treatment for sewage sludge, including phosphorus recycling. German governmental requirements force high number of wastewater plants (WWTP) to recover from sludge above limits 20 g kgTS?1 before further disposal (e.g., co-incineration). The results show that pH reduction has positive effect on shifting the liquid phase...

In this study, the main aim is to evaluate mixing ratio of co-digestion buffalo manure (BM) and excess sludge (ES) influenced for methane yield digestate dewaterability. Five batch experiments with different BM ES ratios were carried out under thermophilic mesophilic conditions. The increased by 10.1–73.5% conditions 87.9–153.3% conditions, compared mono-anaerobic digestion same Shannon Chao1 i...

French legislation requires the control of private on-site sanitation systems by local authorities. This will result in a large increase of the quantity of sludge from septic tanks to be treated. Nevertheless, large wastewater treatment plants are not systematically able to treat this sludge because they may have reached their nominal load or they are not so numerous in rural zone to avoid too ...

A University of Cape Town (UCT) pilot plant combining both membrane bioreactor (MBR) and moving bed biofilm reactor (MBBR) technology was monitored. Three experimental Phases were carried out by varying the mixed liquor sludge retention time (SRT) (indefinite, 30 and 15 days, respectively). The system performance has been investigated during experiments in terms of: organic carbon, nitrogen and...