Microbial decolorization of wastewater

摘要

Present invention offers, for the first time, a biological approach through the use of white-rot fungi to the decolorization of dye wastewater. It is also applicable to other colored substances and/or their wastewater such as molasses. Because of its low cost, renewable and regenerative activity, and little or no secondary pollution hazard, biological method is the most widely practiced method in nature and in practice in treating organic refuse and industrial waste. Current invention discloses, specifically, undiscovered activities of the Myrothecium and Ganoderma fungi in removing colored substances from dye solutions and dye wastewater. It is the result of a deliberate process of screening for natural water/soil-born and farm/industrial-waste-derived microorganisms for such specific purpose in our laboratory. The accompanied process invention shows that simple biological treatment could also produce consistently effective results in treating a wide spectrum of dye wastewater under greatly varied conditions. This ability also is not restricted to the dye substances. For instance, it was also effective in decolorizing molasses fermentation wastewater. Since Ganoderma fungi is a well consumed fungi in the Orient particularly for its medicinal value, we have reason to believe that this color transforming and/or removing ability has great potential in facilitating the manufacturing of specialty food and drug products where color may present certain unique consideration.