Authors: V.N. Shtepa, S.Yu. Kireev, A.V. Kozyr, A.B. Shikunets

Title of the article: Combined electrochemical technology for processing organic wastes from local treatment plants into a component of organic fertilizer

Year: 2026, Issue: 3, Pages: 57-68

Branch of knowledge: 2.6.10. Organic matter technology

Index UDK: 628.356.4:631.825.2:621.647.2

DOI: 10.26730/1999-4125-2026-3-57-68

Abstract: The relevance of processing organic wastes from local treatment plants (LTP) is due to growing ecological risks, high disposal costs, and insufficient implementation of their potential for reuse as a resource, particularly as a component of organic fertilizers. The aim of this research is a comprehensive evaluation of the effectiveness of various technologies for processing a mixture of flotation sludge and excess sludge from a dairy processing plant from the perspective of practical applicability at industrial facilities. The study experimentally compared four methods: electrochemical treatment (electrolysis), addition of a high-molecular biologically active compound (HMBAC), application of ferrate oxidant, and a combined method (HMBAC + electrolysis). Effectiveness was assessed based on organoleptic (odor on a 5-point scale PND F 12.16.1-10), physical (sedimentation rate, supernatant water turbidity), and microbiological indicators (total microbial count, coliform bacteria). The combined method—introduction of HMBAC at a concentration of 0.05 ml/l followed by electrolysis (180 s, 20 A)—provided the best comprehensive result: odor reduction to 2 points, supernatant water turbidity to 3.3 NTU, and pathogenic microflora reduction to 4.1·10² CFU/ml with complete elimination of coliform bacteria. A modular technological scheme for LTP waste processing has been proposed, allowing not only to reduce their hazard class but also to transform them into a marketable product—a component of organic fertilizer. This technology opens prospects for implementing circular economy principles at food industry enterprises, reduces operating costs, and creates additional economic value. The research results have practical significance for developing and scaling modular installations for organic waste processing. Further work involves developing regulatory documentation and conducting field trials of the obtained product in the agricultural sector.

Key words: organic wastes local treatment plants electrochemical treatment high-molecular biologically active compound ferrate organic fertilizer soil-ground circular economy

Receiving date: 19.01.2026

Approval date: 15.06.2026

Publication date: 27.08.2026

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