Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation

Child Classifications

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• C05F 17/05 Treatments involving invertebrates, e.g. worms, flies or maggots
• C05F 17/10 Addition or removal of substances other than water or air to or from the material during the treatment (for activating or stimulating the treatment C05F17/20)
• C05F 17/20 using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment (use of invertebrates C05F17/05)
• C05F 17/30 using irradiation, e.g. solar or nuclear radiation; using electric or magnetic fields
• C05F 17/40 Treatment of liquids or slurries
• C05F 17/50 Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
• C05F 17/60 Heating or cooling during the treatment
• C05F 17/70 Controlling the treatment in response to process parameters
• C05F 17/80 Separation, elimination or disposal of harmful substances during the treatment
• C05F 17/90 Apparatus therefor