Study on the factors affecting simultaneous removal of ammonia and manganese by pilot-scale biological aerated filter (BAF) for drinking water pre-treatment

Effects of dynamic operating conditions on nitrification in biological rapid sand filters for drinking water treatment

“…Tekerlekopoulou and Vayenas (2008) observed stratification of ammonium removal with depth under varying ammonium loads in nitrifying trickling filters, with most of the removal occurring at the top of the filter, and very little occurring deeper in the filter bed. Ammonium removal that is not stratified, but uniform throughout the depth of the filter, has been reported by Lopato et al (2013), who examined ammonium removal in biological rapid sand filters, and by (Han et al, 2013) in biological aerated filters.…”

Startup pattern and performance enhancement of pilot-scale biofilm process for raw water pretreatment

“…Thereinto, the pollution of drinking water source directly threatens the drinking water safety (Chu et al, 2010;Zhang et al, 2013). For example, the major pollutants such as ammonia and organics existing in water could complicate the chlorination process and form disinfection byproducts (Chowdhury et al, 2009;Benner et al, 2013;Han et al, 2013), which would cause health problems to people. However, traditional raw water treatment processes including coagulation, sedimentation, sand-filtration and disinfection, could not remove nitrogen and dissolved organic carbon (DOC) effectively.…”

Kesan Gabungan Aktiviti Guna Tanah dan Perubahan Musim terhadap Kualiti Sumber Air: Kajian Kes di Terusan Utara, Kedah

“…Memandangkan kebanyakan aktiviti ini terletak di koridor terusan, maka air cucian serta sisa buangan akan mengalir terus ke dalam terusan tanpa rawatan. Kehadiran ammonia dalam jumlah yang tinggi bukan sahaja boleh meningkatkan permintaan oksigen malah turut mengurangkan keberkesanan disinfeksi semasa proses rawatan air (Han et al 2013). Peningkatan kepekatan ammonia juga boleh berlaku disebabkan perubahan regim hidrologi terutamanya hujan (Hoo et al 2006).…”