Tube Settlers are installed to increase the settling capacity of the SBs by reducing the vertical distance a floc particle must settle before agglomerating to form larger particles and by capturing the fine flocs that escaped the clarification zone beneath.

Clarification Tract (Clari-trac) Systems are installed to collect settled sludge at the bottom of the two parallel SBs by means of suction and discharges them by gravity through flexible sludge removal piping system. During high turbidity period, when concentration of sludge is more than what the Clari-tracs can collect, manual cleaning of SBs are implemented once in every 2 to 3 weeks.