Changes

A sequencing batch reactor (SBR) is an aerobic treatment process that is highly efficient in removing organic matter, suspended solids and even nutrients in wastewater. Unlike the traditional activated sludge method that uses multiple tanks, the SBR treats each batch individually in a single tank. There are some obvious benefits of SBR technology as it has a smaller footprint, is less expensive to construct and is somewhat easier and less expensive to operate and maintain.

At a treatment plant in Halong City, Vietnam, the installation of the SBR involved 3.5km of pressure sewage pipelines, eight underground sewage pumping stations and 10km of gravity sewers.