Treatment of textile waste water using natural catalyst (chitosan and microorganism)

Abstract

The study investigates the performance of chitosan and microorganism towards treatment of textile wastewater by using aeration & flocculation process. Chitosan is found from chitin by deacetylation. Flocculation and the process are done using Jar test experiment. The effect of dosage, reduction of COD, reduction of BOD and color of textile wastewater is studied. The results obtained found that chitosan is very effective for reduction of COD, BOD and color. The best condition for COD and BOD removal is achieved at 0.1-0.2g dosage, pH 4.17 and 30minutes of settling time. Under this condition, about 40% of COD and 43% of BOD is removed, respectively. However, the results obtained using microorganism also good. Microorganism is able to remove both COD and BOD of the wastewater but COD is slightly higher than the acceptable range.