Sludge Regeneration: The Complete Process of Municipal Sludge to Organic Fertilizer Production
What is Sludge-Based Organic Fertilizer? Sludge-based organic fertilizer refers to an organic soil conditioner made from dewatered sludge produced by municipal wastewater treatment plants through processes such as heavy metal stabilization, aerobic fermentation, and deep composting. Sludge contains abundant organic matter (30% to 50%), nitrogen and phosphorus nutrients (2% to 4% nitrogen, 1% to 2% phosphorus pentoxide), and trace elements necessary for plant growth. However, untreated sludge contains pathogens, parasite eggs, and potential heavy metal risks, and must be rendered harmless and stabilized through a standardized fermentation process.
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