A Study on Red Tide Control with Loess Suspension
A Study on Red Tide Control with Loess Suspension
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发表时间：
1996
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通讯作者：
Na Gui-hwan;Cho Woo-Jeong;Chun Young-Yull
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作者：
Na Gui-hwan;Cho Woo-Jeong;Chun Young-Yull
蒙脱石作为控制赤潮的方法之一，在韩国和日本被用于消除赤潮的病原生物。由于蒙脱石在韩国南海岸分布量大，且靠近赤潮发生地，因此我们用黄土代替蒙脱石进行了分析。通过使用黄土和煤灰的混合物，我们研究了诸如氨和磷酸盐等营养物质的降低水平，作为叶绿素a含量的病原生物的消除，以及对网箱养殖场中的水产养殖生物的有害影响。黄土颗粒对铵态氮和磷酸盐的吸附量约占总吸附量的一半，而粉煤灰颗粒对铵态氮的吸附量仅占总吸附量的一半。在水柱试验中，1,000 ppm的黄土悬浮液中，20分钟内即可沉降黄土和粉煤灰颗粒，2小时后即可消除赤潮生物，而相同浓度的粉煤灰只能消除赤潮生物。在对鱼类和无脊椎动物的有害试验中，我们观察到试验动物的任何其他负面影响，而不是黄尾鱼的轻微减速。
As one of the red tide control method, montmorillonite was used to eliminate the causative organisms in Korea and Japan. We assayed the loess to replace the montmorillonite because it distribute in large quantity and nearby the red tide occurrence in South Coast of Korea. By using the mixture of loess and coal ashes, we examined the decreasing level of nutrients such as ammonia and phosphate, the elimination of causative organisms as a chlorophyll a content, and the harmful effect on aquaculture orgarnisms in cage culture farms. Half of the ammonium and phosphate was adsorbed by the loess particles, but only of ammonium was adsorbed by the coal ashes particles. In water column test, the particles of loess and coal ashes were settled down by in 20 minutes, the red tide organisms was eliminated by after 2 hours in 1,000 ppm of loess suspension, but the organisms were eliminated only by the same concentration of coal ashes. The harmful test of fishes and invertbrates, we observed any other negative effects of test animals than a tint deceleration in yellowtail.