Tanks were filled
with water from the nearby brackishwater source. The fine meshed filter
bag was used to prevent entry of unwanted materials and
suspended particles in to the tanks. Two aeration pipes with air stones
and regulators with 7.5 m3 air tank−1 min−1 diffusing capacity were
provided in each tank to meet the oxygen demand and proper mixing
of floc. As an inoculum, 10 L water with bacterial floc developed in a
separate tank was added to each tank.