Process for treating liquids wastes possessing a strong acidity
OwnerPhilippe Pichatinventor
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Abstract
Waste material having a pH not exceeding 2, and which have previously caused a serious disposal problem, are converted into stable, solid, useful, non-polluting products by first mixing the waste material with fly ash using about 30 to 260 parts of weight of ash for 100 parts of waste material, then neutralizing the resultant mixture using lime or calcium carbonate containing materials, next adding a calcium containing binder such as lime or Portland cement, and then solidifying the resultant mixture.
Claims9
A process for treating liquid wastes diluted in water and possessing strong acidity (pH 2) to obtain stable solid materials that are non-polluting and resistant to water leaching, the process comprising the steps of:
- first, mixing the wastes with coal fly ash to form a pasty mass;
- then, neutralizing the pasty mass to neutral pH;
- and
- finally, adding a lime-containing substance to obtain a treated product.
Dependencies are inferred from the claim text.