Geo-biofilters for the removal of ammonia in the intensive aquaculture ponds

Abstract

Ammonia is the primary well-known carcinogen and harmful substance in intensive aquaculture waters. When it is released into the neighbouring canals, it poses a significant risk to the local fauna and flora as well as the human population. This paper examined the effectiveness of modified corncob ash-based geo-biofilters in a column test. The numerous biofiltration process parameters, their ammonia removal mechanism, and the kinetics of biofilters have all been examined. A Series of experiments were performed with the recirculated aquaculture waters, and lag times in the column tests. According to the findings, when the biofilter with continuous flow, it takes 26 cycles to entirely remove ammonia from polluted water, after which the cycle rate is maintained at a constant rate. This strategy might be a practical and affordable way to cleanse the waters used in intensive aquaculture.