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Production of plant growth medium from sewage sludge comprises mixing sludge with mineral material and carbon source and composting mixture
Production of plant growth medium from sewage sludge comprises mixing sludge with mineral material and carbon source and composting mixture
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机译:由污水污泥生产植物生长培养基包括将污泥与矿物材料和碳源混合,并形成堆肥混合物
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摘要
Treatment of sewage sludge comprises mixing the sludge with a mineral material and a carbon source and maintaining the mixture in an aerated state, with a solids content of up to 80 %, to produce a plant growth medium containing simple humic substances resulting from aerobic digestion of organic matter in the sludge. The mineral material is added in an amount sufficient to reduce or prevent fermentation of the organic matter and the carbon source is added in an amount giving a carbon/nitrogen ratio above 8.5.
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