TY JOUR TI RATIONALE OF VARIANT OF BIOLOGICAL WASTEWATER TREATMENT FOR THE CONDITIONS OF YAKUTIA KW water purification KW general scheme KW fertilizer production KW silt KW recommendation. JO INTERNATIONAL AGRICULTURAL JOURNAL AU Stepanova, D.I. AU Grigorieva, A.I. AU Grigorev, M.F. PY 2025 IS 8 PB Electronic science