| 摘要 |
This invention relates to the decontamination of liquors from cleansing processes from the cleansing of animal hair, and fleeces sheared from wool producing animals, generally known in the art as "scour" liquors. Such animal hair and fleeces is often heavily contamined with dust, faeces and residual traces of organic compounds from pesticides. Fleece will also contain large quantities of lanolin and wool greases. Preferably the method for decontaminating scour liquor comprises the steps of adding lime to the liquor, allowing the lime to react with the carbonate and bicarbonates in the liquor, adding an acid metal salt to the liquor to reduce the pH of the liquor, allowing the metal to precipitate as insoluble hydroxide to cause the solids in the liquor to coagulate and flocculate, and removing the coagulated solids from the liquor. In a preferred embodiment the method includes the steps of selecting the lime to comprise Calcium Hydroxide (Hydrated Lime), preferably supplied in the form of a slurry. |
