The assessment of technology SBR in Vietnamese wastewater treatment

Abstract

The Sequencing Batch Reactor - SBR is a single reactor, uses "fill and draw" process for treating wastewater with activated sludge and has been around since the 1920s. In comparison with conventional continuous flow systems, SBR gets some advantages about operation, space requirement and cost. From 2012 - 2016 in Vietnam, 60% projects of urban wastewater treatment are SBR, including building new wastewater treatment plant or reconstruction for achievement Vietnamese discharge standard "The Standard A". For assessment of application SBR technology for treating urban wastewater in Vietnamese conditions, examining 3 wastewater treatment plants (2 new plants and 1 reconstruction plant). The quality of treated water about suspended solids and organic pollution lower than discharge standard, but the concentration of nutrient is not achieved the Standard A or design value. The performance of the plant does not ensure when the population increasing in the near future.