Ammonium and Nitrate Uptake by Immobilized Helminthocladia australis Filaments and It'sApplication in the Waste Water Treatment of Larval Culture of Tiger Prawn

• Main Authors: Liu, Kuan-Fu, 劉冠甫
• Other Authors: LOU, SHOW-WAN
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/65725376585628910921

碩士 === 國立臺灣大學 === 漁業科學研究所 === 86 === Filamentous phase of Helminthocladia australis stable on PU( polyurethane) sponge to form algae bed. Determine different form both of algae bed have different concentration nitrate-N and ammonium-N of absorbed efficiency in water. Breeding water of Grass Prawn Penaeus monodon larvae use algae bed to purify water on the site simulate experiment, to proceed culture reality of coordination experiment, estimate algae bed applied aquaculture effluent purify treatment is feasible。 Filamentous phase stable on PU sponge in addition culture to form algae bed. Deal with nitrogen-starved pass though seven days to proceed nitrate-N and ammonium-N of absorbed preposition experiment。Result show, algae bed absorbed nitrate- N with different primary concentration, after seven days total absorbed amount is no obvious difference, first day absorbed amount is 50% above during experiment. But first hour of first day with higher nitrate concentration produced higher absorbed rate, and then post pon to settle down。Algae bed absorbed ammonium-N with different primary concentration, first day in higher concentration have more higher absorance. Algae bed to ammonium-N absorbed rate is high, and then post pone decrease。During seven days of experiment, different ammonium-N primary concentration obvioused different total absorbed amount。10 mg/l NH4+-N treatment display the highest total absorbed amount, and increase concentration, then absorbed amount is decrease。 Filamentous phase of algae piped into sponge to formed algae bed, total absorbed amount of nitrate-N with different primary concentration produced different total absorbed amount。Every treatment of first day absorbed amount is 70% above of total absorbed amount; different ammonium-N primary concentration produced different total absorbed amount, and total absorbed amount with time is positive relation and nonlinear。 On purify test of larvae breeding water quality , test level is ammonium-N 1.72 mg-N/l, nitrite-N 195.7 g-N/l, nitrate-N 1.008 mg-N/l and phosphate-P 244.9 g-P/l。treatment larvae survive rate of test end is 92.91%(treatment)、87.34%(change water) and 84.86%(control)。 On the site simulate experiment algae bed efficiency is low be cause of water temperature difference is high and suspension adhere effect is highly algae body absorbed effect and microbiological effect rate is higher algae body absorbed r