| REED BED SYSTEM FOR TREATING  INDUSTRIAL WASTEWATER | 
                 
               
Introduction  
              
                - Industries  generate enormous amount of wastewater
 
                - Wastewaters are  rich in toxic heavymetals and other hazardous chemicals
 
                - Indiscriminate  disposal resulted in soil and water pollution
 
                - Current  wastewater treatments are expensive
 
                - Reed bed system is  an ecofriendly and cost effective method for treating industrial wastewaters
 
               
              
              Reed Bed System :Integrates  plants and geomaterials to remove (by absorption and adsorption) pollutants  from wastewater 
              Typha
              
                - Cattail reed (Typha latifolia) is a perennial  herbaceous plant effective in removing heavymetals and salts
 
                - Root exudates  effectively immobilize heavy metals in the rhizosphere
 
               
              Water hyacinth : Water hyacinth (Eichornia crassipes) effectively absorbs  nitrate and phosphate besides heavymetals               
              Vermiculite
              : A hydrous,  silicate mineral with high cation exchange capacity adsorbs large amounts of  heavymetals 
              Advantages
              
                - Removes  heavymetals 90-100% from industrial wastewater
 
                - Reduces BOD and  COD (70-90%)
 
                - Reduces TDS  (>90%)
 
                - Removes nitrate  and phosphates (80-98%)
 
               
              Applications
: To treat  wastewaters from Tanneries, Dye & Textile and Paper & Pulp industries
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