| 摘要 |
<p>A purification process for the removal of contaminants from raw or waste waters by combined biological-chemical degradation of such contaminants comprises adding a finely divided mineral or mixture of minerals to the active micro-organisms kept in the reaction system and contacting the incoming waste waters with the formed active sludge. The added mineral or minerals which are essentially insoluble in water and non toxic to the microorganisms increase the density of the formed active sludge. Through dissociation of the mineral, the ions assist in precipitating ionic species present in the processed waste water and in controlling the pH therein. The yield of the simultaneously occuring biochemical and chemical reactions is thereby enhanced. Apparatus is disclosed in which the process may be conducted.</p> |
