Biofilter technology developed by CSIR-NIIST is unique for treatment of odorous gaseous stream.  CSIR-NIIST undertakes careful study of customer requirements before design of the odour control system. NIIST Biofilter technology has been implemented in various industries i.e., shrimp feed plants, fish meal plants, gelatine factory, bone meal factory, composting plant etc. NIIST high-performance, low-cost BIOFILTER MEDIA (US Pat. 6,696,284) has special characteristics like provides moisture, provides support of growth, provides nutrients, provides neutralising agents,   low pressure drop, high water holding capacity, enables mass transfer of contaminants from air to microbes, green and eco-friendly material, long life