Excess sludge production is one of the limitations biological activated process. Therefore, study’s objective to upgrade MBBR process an integrated fixed film-activated (IFAS) reduce excess production. Two scenarios were followed in this study eliminate process: first, modifying moving bed biofilm reactor (MBBR) system by increasing solid retention time (SRT) from 5 15 days; and second, upgradi...

This paper focuses on the feasibility of septage treatment by sludge drying reed beds (SDRB). Different designs and operation conditions of SRDB pilot-scales were tested on system efficiencies such as the top filtration layer (sand or compost) and the organic load (30 and 50 kg SSm(-2)y(-1)). Results focus on the obtained performances considering sludge characteristics, filtration efficiencies,...

Knowledge of activated sludge biokinetic parameters is important to simulate the behaviour of an activated sludge plant with the commonly used IAWQ models (e.g. Henze et al., 1987). Batch experiments using pulse substrate additions in a small bioreactor are often applied to collect data about activated sludge behaviour. However, many of the experiments that were designed in the past suffer from...