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Calculation of the dose of mineral coagulant for water purification by the method of concentrated coagulation

Abstract

Calculation of the dose of mineral coagulant for water purification by the method of concentrated coagulation

Safronov M.A., Timofeeva O.A.

Incoming article date: 05.03.2020

The method of calculating the coagulant dose using the technology of concentrated coagulation with the addition of air is given. The paper considers the peculiarities of using aluminum sulphate and aluminum polyoxychloride as a coagulant in different periods of the year, taking into account seasonal changes in water quality. Recommended values of parameters used in calculations of the coagulant dose during the year are given. The refined method of calculating the coagulant dose allows determining the weight dose of the reagent, including the mixed coagulant, taking into account the required air saturation of water, as well as the optimal volume of the so-called auxiliary water flow sent for concentrated coagulation.

Keywords: coagulant dose, aluminum sulphate, aluminum polyoxychloride, air saturation, concentrated coagulation, auxiliary flow, mixed coagulant