Wastewater Treatment Of Freshwater Crayfish (Cherax quadricarinatus) Culture With Lettuce (Lactuca sativa)

Abstract

The objective of this study was to treat freshwater crayfish Red Claw (Cherax quadricarinatus) culture wastewater containing organic material of residual feed and feces by bioremediation using aquaponic recirculating system with lettuce (Lactuca sativa). Aquaponic bioremediation of crayfish culture wastewater with lettuce attained ammonia and nitrate reduction up to 90.1% and 23.3%, respectively, during three weeks observation. At the end of experiment, the average length of crayfish was 6.27cm (control) and 7.12cm (treatment). Crayfish weight of control was 6.12g, and crayfish weight of treatment was 8.12g. Crayfish growth rate ranged 0.95-1.01 g/day. The length of lettuce during observation ranged 8.9 - 12.0 cm. Lettuce RGR was 0.04 cm/day.