We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effects of filter materials on the removal efficiency of phosphorus and nitrogen from wastewater in an enhanced AO-BAF system.
- Authors
Zichun Yan; Nosakhare Iseghayan
- Abstract
Phosphorus and nitrogen are some of the major nutrients easily found in waste water that pollutes our water bodies. For years, economical and effective ways have been sorted out to reduce the influx of these nutrients into our water bodies. Biological Aerated Filter (BAF) technology has been one of them, but some challenges have been found to affect the removal efficiency of phosphorus and nitrogen through the use of an ordinary AO BAF system. In that, the effluents from a normal AO BAF system hardly meet the environmental standard of effluents discharging into the local water bodies. The research objective of this study is to determine the best condition for phosphorus and nitrogen removal in an enhanced AO BAF system and the role of filter materials on the removal efficiency has been investigated to determine, if the effluents meet with the environmental standards. The AO BAF and the sponge iron and manganese sand system filter materials were composed of ceramic, zeolite, sponge iron and manganese sand. The following setting parameters were used: Reflux ratio was set at 100% and 200%, Hydraulic load at 0.5 m3 / m2 • h., Air/Water ratio at 10:1. The removal efficiency of phosphorus and nitrogen on various settlings and filter materials were compared. And it was shown that sponge iron mixed with manganese sand showed high removal efficiency for phosphorus, which fulfilled the environmental standard for phosphorus effluents discharging into local water bodies.
- Subjects
WASTEWATER treatment; PHOSPHORUS in water; NITROGEN removal (Sewage purification)
- Publication
Kuwait Journal of Science, 2017, Vol 44, Issue 3, p112
- ISSN
2307-4108
- Publication type
Article