Adsorbent for municipal wastewater treatment
AssigneeCarbogenics LTD
InventorJan Mumme
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Abstract
There is described a particulate carbon adsorbent comprising 60 to 90% by wt carbon, wherein the particulate carbon adsorbent is a fibrous pyrolysis product of an organic fraction of waste screenings, and wherein the fibrous pyrolysis product predominantly comprises fibres having a diameter in the range about 10-40 μm and a length in the range about 50-500 μm. A method of manufacture is also described. The particulate carbon adsorbent is useful in of odour prevention in wastewater treatment and other wastewater processes.
Claims7
A method of manufacture of a particulate carbon adsorbent comprising 60 to 90% by wt. carbon, wherein the particulate carbon adsorbent is a fibrous pyrolysis product of an organic fraction of waste screenings, and wherein the fibrous pyrolysis product predominantly comprises fibers having a diameter in the range of about 10-40 μm and a length in the range of about 50-500 μm, the method comprising the steps of:
- (a) providing an organic fraction of screenings with a dry matter content of at least 50%;
- (b) pyrolysing the organic fraction of waste screenings of step (a) at a temperature in the range of 650° C. to 900° C. to obtain pyrolysed material;
- and
- (c) grinding the pyrolysed material of step (b).
Dependencies are inferred from the claim text.