赤潮的发生越来越频繁 ,其危害也越来越大 ,受到人们广泛的重视 ,特别是引起许多教育界人士的关心。赤潮发生的具体原因还未被完全弄清 ,但总的说来 ,其发生的根本原因是水体的富营养化。本实验能快速便捷地证明水体富营养化的影响 ,具有很好的环保教育作用。实验原理生活污水 The occurrence of red tide is more and more frequent, its harm is also more and more large, which is widely valued by people, especially caused by many educators. The specific reasons for the occurrence of red tide have not yet been fully understood, but in general, the root cause of its occurrence is the eutrophication of water bodies. This experiment can quickly and easily prove the influence of water eutrophication and has a good environmental education effect. Experimental principle of domestic sewage