用改性粘土矿物治理赤潮灾害的前景

赤潮，这一当今全球性的海洋灾害，正严重干扰着３０多个沿海国家的经济发展。近年来，我国已成为一个赤潮灾害多发的国家。我国大陆沿海１９７２年至１９９４年记录有２５６次赤潮灾害，且呈逐年增加趋势。据统计，仅１９９８年的赤潮所造成的经济损失就已超过１０亿人民币。１９９８年是我国赤潮重灾年：三四月份，赤潮袭击香港，造成约３亿港元的损失。广东省从饶平市、汕尾市到深圳、珠海、阳江沿海相继发生了赤潮，蔓延速度之快，致灾面积之大，实属历史罕见，是广东省近１３年来最严重的一次，造成的经济损失超过１亿元。１９９８年下…

Future of the Control of Red Tide by Modified Clay Minerals

In recent years red tide often occurred in offshore China which cause enormous losses of national economy. The occurrence of red tide is multiple effect of various factors, such as organisms, nutriments, geographical condition and ocean current etc., among which eutrophication of seawater is major in the offshore area. According to these factors many methods of precasting red tides are built, but it is no ideal way to remove red tide organisms directly and to control red tides. We have prepared a new modified bentonite and built a method to remove red tide organisms. The experiment result shows that the method not only has better capability to remove red tide organisms but also does not pollute environment. The method has a bright future in the control of red tides.