Biological Treatment of Waste Water

• Three stage Biological Waste Water Treatment Technology, developed by Prof. B.D.Tripathi is an economic and Eco-friendly technology in which aquatic plants such as Eichhornia crassipes, Microcystis aeruginosa, Scenedesmus falcatus, Chlorella vulgaris and Chlamydomonas mirabilis are used for removal of pollutants from the domestic wastewater.
• With this technology BOD - 96.9%, Suspended solids - 78.1%, Total alkalinity - 74.6%, PO4-P - 89.2%, NO3-N - 81.7%, Acidity - 73.3%, NH4-N - 95.1% and COD - 77.9% are minimized in the domestic waste water.
• Rich contents of N, P, K, Ca, Mg and crude protein in plant tissues of aquatic plants used for the treatment indicates their utility as animal fodder.
• Very good quality of bio-fertilizer is produced from these plants used for the treatment.
• This low cost effective technology was highly appreciated by scientists and technologists during Int. Conf. at Vienna and recommended for its application for pollution control in tropical countries.

Technology published as: Biological treatment of waste water by selected aquatic plants. (1991) Environ. Poll., 69, 69-78.