Feasibility study for the reconstruction of a water treatment plant

Abstract

This article presents a reconstruction plan for an underground water deferrization station in southern of Tyumen Oblast, including a feasibility study. The reconstruction is necessary due to unsatisfactory water quality delivered to consumers, primarily high manganese content. Analysis of the initial and treated water quality from the existing plant revealed key factors affecting the treatment processes. The proposed technological modifications consider the groundwater’s unique composition, in particular, the high dissolved carbon dioxide leading to low pH, along with the operational experience of region deferrization stations and results from laboratory and pilot-scale testing at similar facilities. The proposed solution uses a reagent method for manganese removal, employing potassium permanganate as an oxidant. To reduce carbon dioxide concentration and increase pH, the study recommends replacing the aeration system from vacuum-ejector to barbotage in the loading layer. The reconstruction does not require an increased facility size. Technological calculations take into account maximum use of the existing station. The feasibility study determined capital and operating costs, and calculated the increase in water supply costs. The assessment of reconstruction efficiency demonstrated its economic viability.