SBR, or Sequential Batch Reactor, technology consists of one reactor in which all the treatment steps can take place in a single tank. SBR technology is characterized by its relatively low investment and operational costs, coupled with its small spatial requirements.
DHV has extensive knowledge and experience in the application of SBR technologies, and has developed a number of interesting solutions. For instance, in 2000, DHV carried out a unique project for the KPE (Kuwait Petroleum Europe) refinery. Two of the refinery’s former gasoline reservoir tanks were converted by DHV into two operational bioreactors operating on SBR principles. The tanks biologically treat 200 m3/h of wastewater – with a maximum capacity rating of 300 m3/h.
Nereda® at a glance
The SBR and the Nereda® technologies are both founded on the principle of housing all treatment steps in a single tank. The power of Nereda® is found in the bacteria, which do not grow, as is the case in SBR technologies, in flock form, but in concentrated and compact granules. These granules sink much faster than flocks, which means that the entire treatment system takes up a lot less space and involves lower construction and operating costs.
Nereda® not only offers savings in construction and operating costs, but also creates possibilities for expansion. Compared with conventional treatment installations, the Nereda® technology only occupies a quarter of the surface area. There is thus a saving in land-use, and space is made available for the extension of treatment capacity.