| 摘要 |
<p>In a process for treating waste waters contg. V, W and/or Mo, esp. waste waters produced in the mfr. of V, W or Mo the V, W and/or Mo are ppted. in the form of Fe vanadate, tungstate and/or molybdate with Fe cpds. Almost 100% useful materials are recovered. Decantation before filtering is eliminated. The treated waters only neutral salts which can be removed or subjected to a reverse osmosis treatment to give a concentrate which car be evaporated economically. The pure water obtd. can be recycled.</p> |
