| Abstract |
Ammonia treatment in a tilapia pond is considered of great significance, for cleaning
and changing water in the pond can cost substantially while ammonia has a high
toxicity to aquatic animals. In the experiment of the treatment of tilapia wastewater,
a 10 L column reactor and a 10 L baffle reactor were employed. Two biofilter
materials included bioball and fiberglass while two types of wastewater were
synthetic wastewater and authentic wastewater. From experimenting on synthetic
wastewater, it was found that on the same surface area of biofilter media, the baffle
reactor could treat ammonia most effectively, yet the water was not reusable for
tilapia culture. Therefore, the experiment was further conducted to enhance
efficiency in the wastewater treatment for aquaculture. In the same-volume reactors,
the surface area of fiberglass could be increased owing to fiberglass having higher
void percentage. In contrast, the surface area could not be increased in the case of
bioball because of their rigid shape and lower void percentage. Thus fiberglass was
used instead in the experiment to enhance the efficiency in wastewater treatment. It
was discovered that the biofilter system with the fiberglass used as the biofilter
media on the 2.4 m2 could remove the ammonia in the wastewater, specifically
decreasing it to 0.2 mg/L, which contributed to the reuse of water for a closed
recirculation tilapia culture system. |
Publication
Journal Publication
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