Bachev, Hrabrin; Ivanov, Bodjidar - 2021
The issue of utilization of sludge from wastewater treatment in agriculture is an important socio-economic and … fertilizer in agriculture. It is becoming a topical issue along with the growing interest in effective “transformation of wastes … the effects, factors and efficiencies of sludge use in agriculture. Despite their relevance, in-depth studies of the …