El-Nenaeia Company has developed a commercial fish production
demonstration utilizing water recycle technology developed at Banha
University, Faculty of Agriculture, Agricultural Engineering Department. The
fish production system is designed in a 32.0 m long by 12.0 m wide. Fish
production activities began in the spring of 1998. The facility is designed to
produce 30 tons of fish annually, with the first crop being tilapia. The project is
being operated as a public demonstration of this technology, with biological,
engineering and economic data being collected by research personnel at El-
Nenaeia Company. This paper outlines the design of the recirculating system
technology used to recycle water through the main fish production tanks.