WATER HYACINTH:A BIO INDICATOR OF WATER POLLUTION.

Water hyacinth is used as a water-clearing .The roots absorb impurities and can lock up floating particles from the water so its consider “purifying” the water. The foliage helps to provide shade and the roots provide filtration a spawning area for the pond fish and absorb excess nutrients from the water helping to reduce algae. It also is the best water clarifier due to it has a tropical nature. It can absorb large amounts of organic and inorganic pollutants and other nutrients and elements. It is this ability to pick up heavy metals which has led to the suggestion that water hyacinth could be used to help clean industrial effluent in water. The technology of using water hyacinth for the treatment of wastewater is an alternative method to the conventional methods available. It is more cost effective and as an excellent bio indicator of water pollution. Its adsorption efficiency and adsorption capacity of each metal and its ability to remove pollution from industrial water highlighted their remarkable performances compared to other aquatic plant species. It’s very good results were seen in Sewage water. The roots of Water hyacinths naturally absorb pollutants including lead mercury and strontium as well as some organic compounds which are carcinogenic in nature. The plant itself although more than 90% water has a fibrous tissue and a high energy and protein content and can be used for a variety of useful applications such as Fibre board Charcoal briquetting Yarn and rope Fish feed. Animal fodder and Water purification.