International Journal of General Engineering and Technology

1-6

Authors: Archana. V & Merline Sheela. A

Due to industrialization and developmental activities nowadays water resources are polluted severely. Among the polluting industries, match industries are playing a major role. Sivakasi is a town situated in Tamil Nadu, India is having a number of match industries. For various processes during the manufacturing of matchsticks harmful chemicals are used. The wastewater generated from the match industries is creating problems due to contamination of groundwater and river water nearby Sivakasi. An attempt was made to treat the wastewater using bacterial species viz., Bacillus subtilis and Pseudomonas putida. Water samples were collected from wells of Sivakasi and analyzed for the parameters viz., BOD, COD, Nitrates, Phosphates, and Sulphates and it was found that all the parameters were exceeding the permissible limit. The water samples were inoculated with a pure culture of Bacillus subtilis and mixed cultures of Bacillus subtilis and Pseudomonas putida at different pH conditions (5.5, 6.5 and 7.5). The results revealed that at pH 7.5 the removal efficiency of the pollutants was higher. Also when the mixed microbial consortium was used the efficiency was more when compared with the inoculation of single bacterial culture. At pH 7.5 with mixed culture the percent removal of various pollutants viz., BOD, COD, Phosphate, Nitrate, and Sulphate was 80, 73, 68, 66 and 62 respectively,

21-30

Authors: K. Rani, V. Sridevi, .R. Srinu Venkat Rao, K. Vijay Kumar & N. Harsha

In whole world, cane molasses base distilleries are included under one of the polluting industries in concern to water pollution. After fermentation remains waste from bottom of distillation columns, termed stillage. This highly aqueous residue containing organic soluble is considered a troublesome and potentially polluting waste due to its extremely high BOD and COD values. The typical odour emanating from distilleries is a major nuisance. The color of the spent wash interferes with its oxygenation and self purification. The treatment of distillery wastes is a priority area for environmental sustenance and its quality. Due to the large volumes of effluents and presence of certain recalcitrant compounds the treatment of this stream is rather challenging by conventional methods. Therefore to supplement the existing treatments, a number of studies encompassing physic-chemical and biological treatments have been conducted. This review presents an account of the problem, biological treatment methods and role of enzymes in decolorizing waste water.