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UDC 628.16.081.3

SEREDKINA E. V., Kvachan E. P., Nezhura E. A.

Nonchemical underground water treatment
(Case study of the Amur water intake, the city of Komsomolsk-on-Amur)

Summary

Until the present no economically available and environmentally substantiated process scheme of a land-based underground water conditioning plant in the Far East has existed. High concentrations of iron and manganese at low Eh and pH values predetermined the use of chemical methods of treatment. The comparison of two process flow schemes – chemical and nonchemical (with the use of catalytic filtering media) is presented. It is shown that the use of the technology with three chemicals is not the only possible solution. The use of imported equipment and chemicals makes the operator of the municipal water treatment plant dependent on the pricing policy of the supplier. A process flow scheme of water treatment tested under the real-time conditions of a water intake and approved for the introduction with the use of catalytic filtering media and Russian-made equipment is presented. The main task in developing the process flow scheme of nonchemical water treatment was enhancement of the treatment processes with the aim of reducing capital and operational expenses.

Key words

deferrization , demanganization , decarbonization , nonchemical underground water treatment , nonchemical method , catalytic filtering media

DOI 10.35776/VST.2022.08.02
UDC 628.161

FESENKO L. N., Ignatenko S. I., Fedotov R. V., Shchukin S. A., Kaberskaia Dar’ia, Paukova Dar’ia

The technology of two-stage purification of water with high concentration of iron and manganese

Summary

The results of laboratory studies and field tests of iron removal combined with the demanganation of underground water at the local treatment facilities of the Makhin farm in the Rostov Region are presented. The effect of iron removal and demanganation of underground water in the process flow scheme with artificial aeration, oxidation and subsequent one- and two-stage filtration has been established. The injection points and optimal doses of potassium permanganate and coagulant in the two-stage filtration scheme were determined. A process flow scheme of iron removal combined with the demanganation of underground water with iron content from 10 to 15 mg/dm³ and manganese concentration up to 3.2 mg/dm³ is proposed.

Key words

deferrization , demanganization , nonchemical underground water treatment , local water treatment facilities , two-stage filtration