Measurement of flow velocity in different secondary settling tanks for analysis of the flow

Abstract

Settling tanks are essential parts of wastewater treatment process and their correct design is therefore crucial for its operation. Modeling of flow in these tanks is difficult, therefore it is necessary to find right tool to perform as precise work as possible. In this article flow velocity measurement in two different secondary settling tanks in Slovakia is presented. Rectangular settling tank in Dolný Kubín and radial settling tank with horizontal flow in Nižná nad Oravou were chosen for this purpose. Data gained from these measurement events will be used for building a model and followed by simulation. Additional data from operation of wastewater treatment plants are also used during the work.

Hydrodynamic assessment of combined sewerage overflow chamber in Banská Bystrica

“…WWTPs by rainwater can be reduced [7]. The minimum efficiency of mixed wastewater treatment in WWTPs should neither be reduced nor the conditions in the recipient for the conservation of biological life under short and long-term stress be worsened.…”

“…Sewer network and recipient are connected by separation objects. These objects must, therefore, be designed with regard to the safe functioning of the sewer network even during the flow of large waters in the recipient due to possible backwater [7].…”