Abstract
Design criteria for warm water fish culture utilizing a reuse system were developed. Standard municipal waste treatment methods were used to the maximum extent possible. A trickling filter preceded and followed by settling basins were adequate for nitrification. Primary settling basins should have a detention time of 25-30 minutes, an overflow rate less than 100 m³/m²-d and a depth of at least 1.3m. Solids flushed from the fish tanks required a detention time between 20 and 25 minutes, an overflow rate less than I60 m³/m²-d and a depth of at least 1.3 m for 80 percent removal of suspended solids. Trickling filters were recommended due to simplicity of operation. Minimum depth should be 6 feet with a hydraulic loading rate between 7.5 and 30 m³ /m²-d. Ammonia nitrogen loading rates should not exceed 20 x 10⁻⁵ kg/m²-d. Settling of the trickling filter effluent requiring a detention time of 20 minutes was adequate with an overflow rate of 175 m³/m²-d and a depth of at least 1.8m for 80 percent removal of suspended solids. Fish loading rates of 50 kg/m³ with turnover times of 0.5 hours resulted in acceptable growth, survival and food conversion rates. Possible implications for tranference of experimental results to other water quality conditions are discussed.
Davis, James Tuttle (1977). Design of water reuse facilities for warm water fish culture. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -372021.