TY JOUR TI Methods for urban wastewater sludge treatment KW sediment KW municipal wastewater KW dewatering KW disposal KW elimination KW environmental safety KW economic efficiency JO Proceedings of Petersburg Transport University AU Kapinos, O.G. AU Tvardovskaya, N.V. PY 2026 IS 23 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"