In a cooling tower system currently used biocide Sapectrus CT1300, BD1500 Spectrus besides chlorine gas (2.8 Kgs / Hr) for a system of volume 1200 m3, a recirculation rate of 2400 m3/hr. However, we have succeeded in obtaining the desired chlorine residual (0.5 - 0.8 mg / L). Spectrus dose CT 1300 is between 30-40 mg / L as the total system volume. We have the problem of excessive sludge at the bottom of the pan.

That could give me suggestion to solve this problem. Thank you.