Bioremediation of contaminated surface water (pits, ponds and lagoons) only

Contaminated surface water can be treated by any one of the following two methods: (i) In the first method, large aerators are placed over the lagoons throughout. It provides sufficient oxygen on the surface to meet the biochemical oxygen demand (BOD) of the organic contaminants for five days. Nutrients and bacterial amendments may be added to these surface waters, whenever necessary (ii) In the second water. The effluent from the bioreactor is either discharged away from the treated water or recycled again