HIGH CONSISTENCY MLSS MAINTENANCE METHOD BY AEROBIC TANK, ANAEROBIC TANK CROSSING OPERATION AND PRESETTLING

摘要

The present invention relates to anaerobic, aerobic tank cross operation and a high concentration of MLSS keeping process in the reactor according to the pre-sedimentation, the plurality of the reaction vessel in order to drive a plurality of the reaction vessel and the reaction vessel in a biological sewage treatment plant clarifier has been set up for the pre-sedimentation driving repeat intersecting the anaerobic conditions and aerobic conditions, and the pre-sedimentation step is carried out when anaerobic conditions. Then, the influent and sludge is transported to allow the case to the pre-sedimentation occurs, maintaining a high concentration of MLSS with no increase in the amount of conveying the sludge tank so doing, only the inlet outlet are in no stirring anaerobic operation. This invention is in the case of existing installations, the additional civil facilities capacity is advancement of the treatment plant does not enforce a capacity increase or advanced treatment without extensible in, and new treatment plants by highly increasing the MLSS concentration in the reaction vessel without the need for extension of the sedimentation facilities If there are benefits and effects that allow a significant saving in cost budgets.