Treatment tank

loadsewagesettling

improving the operation of secondary settling tanks along with increasing their efficiency increasing the hydraulic efficiency of settling tanks limiting uncontrolled discharges of sediment into the receiver overall reduction of phosphorus and COD in the effluent (by limiting suspended solids in the effluent) Product Features żółty In secondary settling tanks, sewage is clarified and sludge is thickened by separating activated sludge from treated sewage. Unlike primary settling tanks, suspension in secondary settling tanks is difficult to sediment (sludge specific gravity is similar to water weight). At the same time, due to the fact that secondary settling tanks are usually the final element of each sewage treatment plant, they are required to have high sewage clarification efficiency, ensuring reduction of suspension even to 99%, which is the most difficult to achieve. As a rule, this is caused by a change in one or several parameters, such as hydraulic load, sludge concentration or sludge index. Only the development of modeling methods and many years of work on the hydraulic model of the secondary settling tank operation allowed the identification of the main cause of the work inconvenience, which turned out to be - a constant column of sewage inflow. The solution to the problem turned out to be the adjustable column patented by Hydrogav..