SBR SEWAGE TREATMENTATMENT
Wastewater treatment by Sequential Batch Reactor (SBR) is a fill-and-drain activated sludge system for wastewater treatment. In this wastewater treatment system, the wastewater is transferred to a single cut-off reactor in order the undesirable components to be removed and then the effluent is discharged. Balancing, aeration and clarification can all be achieved by applying a single SBR unit. To optimize system performance, two or more SBRs are embedded in the sequence of operations. SBR systems have been successfully used to treat municipal and industrial wastewater. These methods have a unique role in the treatment of wastewater with alternating current or low current.
Contrary to what is imagined, full and empty discontinuous processes such as the SBR are not a method that has progressed to the present stage. Between the years 1914 to 1920, various full and empty systems were operating. Due to the development of new devices and technologies, the interest in SBR systems was revived in the late 1950s and early 1960s. Advances in aeration equipment and control systems allowed the SBR system to compete successfully with the conventional activated sludge system.
The process of SBR wastewater treatment unit and conventional activated sludge are both identical. The US Environmental Protection Agency’s report in 1983 stated this fact as follows:
“The SBR wastewater treatment system is no different from the conventional activated sludge system except that it operates on time rather than on space.”
The difference between the two technologies is that the SBR wastewater treatment system by controlling a time sequence, performs the balancing operation, biological treatment and secondary clarification in a basin. This model of reactors also includes the initial clarification.
In a conventional activated sludge system, the above processes must each be carried out in a separate tank.