Applying the Biofloc technology for treating and reusing wastewater for intensive shrimp culture

Abstract

This study shows that applying Biofloc technology to treat wastewater and reuse wastewater in intensive white shrimp farming aims to reduce environmental pollution and save water as much as possible. This study was divided into 2 experiments, including 7 treatments arranged in 2 types of composite tanks with a volume of 74 and 92 liters each. Wastewater after rearing white shrimp will be pumped into each tank and experiments will be conducted. The total duration of the whole study was about 4 to 5 weeks, experiment 1 was about 4 weeks and experiment 2 was completed in 2 days. Experiment 1 will include 4 different treatments with 3 replications, each treatment will use 3 composite tanks to monitor environmental indicators such as pH, floc volume, and the number of nutrients in the water including Protein (NO2 - NO3- , TAN, TN) and phosphorus (PO4 3- and TP )were absorbed by bacteria, with significant differences (p < 0.05) compared to the remaining treatments. Experiment 2 will include 3 treatments with 3 replications; each treatment will use 3 composite tanks similar to experiment 1 but there will be differences when experiment 2 does not use aeration, and uses 2 types of aluminum alum to treat water turbidity. There will be other differences and a significant difference (p < 0.05) compared to the remaining treatments.