Volume No. 8 Issue No.: 4 Page No.: 890-894 April-June 2014




Phani Madhavi T.,*1 Srimurali M. and Nagendra Prasad K.2

1. Department of Civil Engineering, Sathyabama University, Chennai (INDIA)
2. Department of Civil Engineering, Sri Venkateswara University, Tirupati (INDIA)


Received on : January 01, 2014




In industrial wastewater, the advanced treatment of color removal such as chemical coagulation may be used as pretreatment in order to enhance the biodegradability of wastewater during the biological treatments. Chemically enhanced wastewater treatment is attracting substantial interest among the currently employed chemical unit processes in wastewater treatment. Coagulation-flocculation has received considerable attention for yielding high pollutant removal, especially color removal. This investigation presents a novel formulation of coagulationflocculation for color removal of a metal fabrication industrial wastewater and illustrates its efficiency. The results show that the novel formulation can remove color content from wastewater efficiently. The treated waste water removed color by flocculation / coagulation treatment by using Alum as coagulant. The present study was performed using jar test apparatus with Alum as coagulant. Alum was used to increase the size of flocs at various pH values and at various chemical doses. After the process, the residual color, as well as pH of water were measured. The results showed a significant increase in color removal to the extent of about 99% at an optimum alkaline pH of 8.0 and at a optimum dosage of 450mg/l.


Keywords : Fabrication, Urbanization, Coagulation/flocculation , Biodegradability, Industrial effluents