The Effectiveness of Biofilter to Reduce Fatty Oil and Ammonia Content in the Butchery Liquid Waste
Abstract
Abstract
- The butchery liquid waste is rich in fatty oil and ammonia and its need to be processed before being dispose to environment. A study aims to reduce the fatty oil and ammonia content in that waste has been conducted in March – April 2018. The waste (315 L) was treated using a batch system that was consisted of 2 aerob and 2 anaerob tanks. The butchery liquid waste was kept for 10 days in anaerob tanks, 7 days in aerob tanks. By the end of the experiment, the fatty oil reduced from 63 mg/l to 4.5 mg/l (the effectiveness was of 92.85 %). While the ammonia reduced from 30 mg/l – 0.8 mg/l (the effectiveness was 97.33 %). Other water quality parameters such as DO was improved (from 1 mg/L to 5 mg/L), and pH also increased (from 6 to 8). The treated waste is used as media for rearing Brachionus plicatilis.Observations of Brachionus plicatilis were performed for 8 days. The peak of rotifera growth occurs in the sixth day, reaching 950,000 cells/ml. Based on data obtained, it can be concluded that the combination of bio filters is effective to reduce the fatty oil and ammonia content in the butchery liquid waste.
- Keyword :thebutchery liquid waste, organic pollutants, batch system, Brachionus plicatilis
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