Analysis of stabilisation period of two lentic lake with marble powder

In this study, the application of marble powder into two lentic lakes i.e., Kukkarahalli Lake and Lingambuddi Lake for determining the stabilization period was done. Waste marble powder generated during cutting and sawing of marble was obtained for the study. Black marble powder was brought from Nanjangudu industrial area. The optimum dosage was found to be 150 mg/l and 100 mg/l by jar test for respective lakes. Later the detailed investigation was done in laboratory for determining the stabilization period of two lentic lakes when marble powder is applied directly to the lakes. The studies showed that Kukkarahalli lake water requires 6 days to stabilize without undergoing mixing process at a dosage of 150mg/L. Similarly, the parameter value kept on decreasing with an increase in time and after a period of 6 days for Lingambuddi Lake. This means Lingambudi lake water requires 6 days to stabilize without undergoing mixing process at a dosage of 100mg/L. At 10th day the phosphate and nitrate removal efficiency was about 50-60% for both the water samples. Hence Lentic and Eutrophic state of the lake can be reduced and the lake can be restored.