循環式泡沫分離-ろ過システムによるヒラメ畜養水の浄化

概要

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When one thousand individual Japanese flouns Paralichthys olivaceus of about 900g each were introduced into the closed foam separation-filtration system, changes with the passage of time in the quality of fish rearing seawater (15.5°C) and foam wastewater were examined. The foam separation-filtration system consisted of a fish rearing tank (seawater volume 10m3), two circulation pumps, two foam separating units equipped with air-inhale-discharge type aerator and a filter. The quality of fish rearing seawater was kept clean for several months without any works such as washing filter and changing fish rearing seawater to maintain seawater quality for the living fish. During the 18 hours after the fish were received in the fish rearing tank, the quality of the fish rearing seawater was kept at an average of pH, 7.5; DO, 101%; Turbidity, 0.22 FTU; SS, 0.32mg/l; DOC, 3.17mg/l; NH4-N. 0.80mg/l, N03-N, 47.2mg/l; total viable bacteria, 2.1×104 CFU/ml; and Vibrios, 1.2×103 CFU/ml. Foam generation volume was 30l/day. The foam separation-filtration system was very useful for removing pollutants from fish rearing seawater.
公益社団法人日本水産学会の論文
1996-07-15