The shrimp aquaculture wastewater is taken from shrimp ponds in Phuoc Son village, Tuy Phuocdistrict, Binh Dinh province. This water contained high concentrations of carbon and nitrogen and wassuccessfully treated using a sequencing batch reactor (SBR). By operating the reactor sequentially inaerobic, anoxic and aerobic modes, nitrification and denitrification were achieved, as well as removalof carbon. Specifically, the initial chemical oxygen demand (COD) concentration of 455,8 mg/l wasreduced to 78,5 mg/l within 8 days of reactor operation. Ammonia in the sludge was nitrified. Thedenitrification of nitrate was achieved by the anoxic process and total removal of nitrite was observed.The total suspended solids (TSS) content was reduced quickly. The results indicated that thetemperature range of 28 – 38 oC produced best results in terms of maximum nitrogen and carbonremoval from the wastewater. The SBR system showed promising results and could be used as a viabletreatment alternative in the shrimp industry.Keywords. Shrimp wastewater
Sequencing batch reactor
Chemical oxygen demand, Ammonium,Nitrification
Denitrification.