Biofiltration systems are widely used to mitigate the impacts of stormwater on receiving waters, however their long-term capacity to retain heavy metals has not previously been assessed. Accelerated-dosing laboratory experiments were used to assess the likelihood of breakthrough occurring for three different types of soil-based filter media that are commonly used in stormwater biofilters. In al...

Treating NH3-loaded gases is necessary for improved livestock management. Nitrification, the sequential oxidation of NH3 to NO3? via NO2?, an important microbial process effective long-term removal. Denitrification, a respiration that reduces and NO2? N2 under anaerobic conditions, can also contribute nitrogen conversion in biofiltration systems. Understanding these processes imperative control...

Ozonation-biofiltration as an integrated process for low pressure membrane (LPM) pre-treatment appears quite promising. It has recently been demonstrated to successfully reduce membrane fouling and the combined process is able to produce high quality water, provide robustness, and produce water which consistently meets strict regulations. However, this integrated technology is neither commonly ...

backgrounds and aims: ammonia removal from air to prevent severe damage to the environment and living organisms is very important. biofiltration is an efficient, easy, cost-effective, and environmentally friendly process for degradation of ammonia from waste air. the aim of this study is to investigate the efficiency of biological filtration using a compost and scallop bed for ammonia removal. ...