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

Classification Context

Section:

CHEMISTRY; METALLURGY

Class:

FERTILISERS; MANUFACTURE THEREOF

Subclass:

ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES , , e.g. FERTILISERS FROM WASTE OR REFUSE

Child Classifications

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• C05F 17/05 Treatments involving invertebrates, e.g. worms, flies or maggots
• C05F 17/1 Addition or removal of substances other than water or air to or from the material during the treatment
• C05F 17/2 using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
• C05F 17/3 using irradiation, e.g. solar or nuclear radiation; using electric or magnetic fields
• C05F 17/4 Treatment of liquids or slurries
• C05F 17/5 Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
• C05F 17/6 Heating or cooling during the treatment
• C05F 17/7 Controlling the treatment in response to process parameters
• C05F 17/8 Separation, elimination or disposal of harmful substances during the treatment
• C05F 17/9 Apparatus therefor