The main objective of this work was anaerobic digestion of maize grains and maize silage and biogas production from these crops. Maize grains were treated using one-stage and two-stage anaerobic techniques; using hydrolysis and acidification as the first stage and methanogenesis as the second stage. Processing nonacidified maize grains in an anaerobic reactor is more stable, though the anaerobi...

Pit latrines are on-site sanitation systems for accumulation and stabilization of faecal matter, urine and probably some other materials added to the system over a certain period of time. However, the process of anaerobic decomposition of materials in pit latrines is slow, resulting into build up of organic waste, odour production and fly nuisance which could pose significant risks to public he...

A relevant and current aspect of wastewater treatment systems is related to the processes nitrogen cycle that results in its elimination gaseous forms. In present study, we report first measurements nitrate-reducing rate (NRR) at lab-scale, using flow-through reactor technique with sludge a sewage stabilization pond system located Patagonia (Argentina). Sludge was collected from Inlet Outlet ar...

Aerobic granular sludge was cultivated adopting internal-circulate sequencing batch airlift reactor. The contradistinctive experiment about short-term membrane fouling between aerobic granular sludge system and activated sludge system were investigated. The membrane foulants was also characterized by Fourier transform infrared (FTIR) spectroscopy technique. The results showed that the aerobic g...

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...

This is a literature review for the year 2015 and contains information specifically associated with suspended growth processes including activated sludge, upflow anaerobic sludge blanket, and sequencing batch reactors. The review encompasses modeling and kinetics, nutrient removal, system design and operation. Compared to past reviews, many topics show increase in activity in 2015. These includ...