T/SZFAA 12-2024 Active

Main technical content: Biogas sludge is an important source of environmental pollution. The main substances that harm the environment and crops in biogas sludge are: large-molecule water-soluble organic matter, of which the carbon is represented by MDOC; and harmful gases such as methane, hydrogen sulfide, and ammonia produced by anaerobic fermentation. At the same time, biogas sludge can be decomposed into high-quality biogas sludge fertilizer, whose carbon is represented by AOC and measured by carbon. Biogas sludge fertilizer is highly hygienic and safe, and can be used on any crops, widely applicable to field cultivation and facility agriculture, and can also be used in aquaculture and saline-alkali land improvement. Therefore, the development of biogas sludge fertilizer not only can achieve zero discharge of agricultural waste, but also can greatly improve the quality of agricultural products. To standardize the production and use of biogas sludge fertilizer, this standard sets out the safety indicators for the harmlessness of biogas sludge fertilizer, as well as organic carbon nutrients, physical and chemical indicators, etc. Producers shall label the grade of organic carbon nutrients and inorganic nutrients according to this standard as the basis for pricing and usage, which is conducive to the full reuse of biogas sludge nutrients.