33407 Construction of Unique Buildings and Structures Строительство уникальных зданий и сооружений 2304-6295 5 10.18720/CUBS.11.5 Hydraulic size, as the main characteristic in calculating sump Гидравлическая крупность - основная характеристика при расчете отстойников Babenko Anastasia nastia_babenko@mail.ru Strelez Irina stroikursi@mail.ru Peter the Great St. Petersburg Polytechnic University 17 06 2013 6 11 34 42

A problem of sewage pollution is described in the article. At the moment, there are many ways to purify water. The most rational of them - upholding waste water in various reservoirs. To select the optimum sump need to calculate it for efficiency. The main parameter of calculation – is hydraulic size. The paper present methods for calculating sedimentation tanks and methods for determining the hydraulic size

 hydraulic size methods of purification sumps Stokes formula assumptions Stokes settling efficiency