Original Articles
D. Sivakumar
Abstract
Textile industry processes are among the most environmentally unfriendly industrial processes, because they produce colour wastewater that is heavily polluted the environment. Therefore, wastewater from textile industry has to be treated before being discharged into the environment. In this study, experiments were performed to remove the EC, sulphates and COD from a textile industrial wastewater in constructed wetlands by using aquatic macrophyte Lemna gibba L. The experiments were conducted by different process parameters like nutrient dosage, dilution ratio, pH and contact time using Lemna gibba L. to reduce EC, sulphates and COD in a textile industry wastewater. From the experiments, it was found that the maximum percentage reduction of various parameters in a textile industry wastewater by Lemna gibba L. were obtained at an optimum nutrient dosage of 50 g, dilution ratio of 10, pH of 7 and contact time of 6 days. Similarly, the validation experiment results showed that the maximum removal percentage of sulphate in a textile industry wastewater is lesser than the maximum removal of sulphate in an aqueous solution. Finally, this study concluded that Lemna gibba L.might be used as biosorbent for removing various parameters in a textile industry wastewater.