Additional depth of 0.10 to 0.15 m shall be provided to facilitate free flow. On both sides of the launders ‘V’ notches shall be used. When effluent launders are provided with scum baffles, the ‘V’ notches will be protected from clogging as the baffles retain the floating materials. A scum layer may form at the top of reactor and sludge accumulation can occur in the launder hence, periodical cleaning of launders and removal of scum should be carried out.
Design of Feed Inlet System