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凤眼莲,又名水葫芦、水浮莲等。水葫芦繁殖快,耐污性强,对水中的化学需氧量(COD)、生化需氧量(BOD)有明显的降解效果,对氮、磷、钾及重金属离子均有一定的吸收作用,是一种净化污水、美化环境的理想水生植物。在适宜条件下,一公顷水葫芦能将800人排放的氮、磷元素当天吸收掉。水葫芦还能从污水中吸收镉、铅、汞、铊、银、钴、锶等重金属元素,能使水中的酚、氰等有毒物质分解成无毒物质。
Eichhornia crassipes, also known as water hyacinth, water lettuce and so on. Water hyacinth reproduce fast, strong stain resistance, the chemical oxygen demand (COD), biochemical oxygen demand (BOD) has obvious degradation effect on nitrogen, phosphorus, potassium and heavy metal ions have some absorption, Is an ideal sewage purification, landscaping ideal aquatic plants. Under suitable conditions, one hectare of water hyacinth can absorb nitrogen and phosphorus from 800 people on that day. Water hyacinth can also absorb cadmium, lead, mercury, thallium, silver, cobalt, strontium and other heavy metal elements from the sewage, can make the water of phenol, cyanide and other toxic substances into non-toxic substances.