废干电池浸出的试验研究

以锌碳电池和碱性锌锰电池为实验对象，通过固体废物浸出毒性试验，探讨废电池在不同破坏程度、不同pH值和不同浸取级数条件下的浸出规律。试验发现，锌碳电池中Pb、Cd、zn、Mn浸出浓度相对较高，碱性锌锰电池中Cu、As、Hg浸出浓度较高。对于锌碳电池，中性浸取剂和酸性浸聚剂影响不大，而对于碱性锌锰电池，酸性浸取剂条件下浸浓度反而较低。锌碳电池和碱性锌锰电池都是在完全破坏条件下浸出浓度高。在实际中，电池外壳腐蚀是一个缓慢的过程。

Leaching Test of Spent Dry Battery

The leaching rules of heavy metals from Zinc-C and alkaline Zinc-Mn dry battery have been studied at different pH-values, destruction levels and leaching grades. It was found that the leaching concentrations of Pb, Cd, Zn, Mn were higher in Zinc-C dry battery, while those of Cu, As, Hg were higher in alkaline Zinc-Mn dry battery. The leaching concentration for Zinc-C dry battery did not obviously change when shift from acid to neutral conditions, but for alkaline Zinc-Mn dry battery, it was lower under acidic condition than neutral condition. The leaching concentration was higher for both under completely destructed conditions than partly destructed ones.