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ECB. 2012; 1(5): 146-149


K. K. Sivakumar, M.S. Dheenadayalan.


Textile industry is the largest number compared to other industries in Tamil Nadu. In spite of the continuous efforts to prevent water pollution from these industries, solving of the high total dissolved solids (5000-10000 mg L-1) in the effluent is not yet successfully done. India, being the tropical country, solar radiation is available in plenty during most of the year, enables the industries to use the solar evaporation ponds as a simple and economical treatment system. An experimental textile effluent evaporation tank made by natural black colored stone is developed. It showed excellent results of evaporation utilizing solar energy. The usage of overall pond depth of 17.5 cm and an initial liquid depth ranging from 5 cm to 15 cm depending upon the season with a salt removal period ranging from 5 to 6 days will make the solar evaporation pond an effective system for the recovery of the dissolved salts. Data have been collected, allowing us to know the mean evaporation to be expected in the region of Tamil Nadu, India. A solar wastewater treatment system is proposed for textile industry from this, which leads to possible recycling of chemicals and water by using solar evaporation. Calculation shows that the proposed system is quite competitive with conventional coagulation in the range of small textile effluent treatment installations.

Key words: Effluent Treatment, Effluent, dyestuff, solar evaporation, zero liquid discharge

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