Abstract
In the organic load removal in a wastewater treatment system, biochemical processes and hydrodynamic aspects take place as characteristicsof the flow, mix regime, residence times and reactor geometry, otherwise, the conditions for nonideal flow as bypassing, dead zones and internal recirculation affect their performance. This study deals with an evaluation of the hydraulic behavior of a doublechamber anaerobic reactor (DCAR) of 534.5L (chamber 1=305L and chamber 2=229.5L) as a technological innovation of the UASB reactors. The DCAR was fed with Maracaibo, Venezuela municipal wastewater; each chamber was inoculated with agranular, localbrewery sludge (20% v/v). The hydraulic evaluation was performed at the liquid phase and in operation, using Li+ (LiCl) as a tracer applied in an instantaneous way at the affluent at the theoretical hydraulic retention time (TRHt) of 6 hours; 3.4 in the chamber number 1 and 2.6 in chamber number 2. The DCAR described as a plugflow in both chambers and a hydraulic efficiency close to the unit (1), indicating an almost null presence of dead zones. The CDO (CDOT) of DCAR removalefficiency was kept in the range of 59.77% to 74.46% with an average of 68.26%. For chambers 1 and 2 the average efficiency was 60.4 and 20.94 with a biogas production (L/h) of 2.768 and 0.541 respectively.
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