• Use of micro org to degrade enviro contaminants into less toxic forms. (Bact and Fungi).

• Redox or Oxidation Reduction Potential and Groundwater together help in monitoring process of bioremediation.

• Insitu

• Exsitu

• Genetic Engineering Approaches

Recirculating aquaculture systems (RAS)

• Recirculating aquaculture systems (RAS) are unique engineered ecosystems that minimize environmental pollution by reducing nutrient discharge. They are indoor, tank-based systems where fish are grown at high density under controlled conditions.
• A biofilter system purifies water by removing or detoxifying harmful waste products and uneaten feed. Microorganisms, capable of degrading various compounds, are fixed to an inorganic or organic medium to break down pollutants.
• Ammonia is removed from an aquarium system through a biofilter. It provides a substrate for nitrifying bacteria, which consume ammonia and produce nitrite, another toxic substance to fish. Other nitrifying bacteria consume nitrite and produce nitrate.
• Biofilters are also used to remove phosphorus waste by-products generated by fish. Thus biofilters do not increase phosphorous content in aquatic systems.