| 摘要 |
A method for treating liquid wastes containing photoresist polymers and heavy metals is disclosed. The method includes adding to the liquid wastes an aqueous solution of water soluble FE+3 and Al+3 salts at a pH in the range of from about 0.1 to 1.0, and a water soluble salt of Mg+2 or Ca+2. The ratio of the amount of the Fe+3 and Al+3 to the amount of the Mg+2 or Ca+2 is in the range of from 2 to 3 moles to 1 to 3 moles. A precipitate containing the heavy metals and photoresist polymers is formed.
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