研究了加硫化氨用氨水调节pH值的方法处理钼酸铵生产中的酸性废水。在合适的条件下,废水中重金属铜、铅、锌、铁90%以上被沉淀后除去,98%以上的钼共沉淀进入渣中;沉淀渣再用氨水溶解,84 59%的钼转化为钼酸铵溶液,而渣中的铁、铜、铅基本不溶,锌有部分进入钼酸铵溶液中,此溶液可直接返回钼酸铵的主流程中;经沉淀处理后的酸性废水,再经处理除去碱金属离子后,可结晶生产硝酸铵。 Ammonia sulfidation with ammonium sulfide to adjust the pH value of the treatment of ammonium acid production of acidic wastewater. Under appropriate conditions, more than 90% of the heavy metals copper, lead, zinc and iron in the wastewater are precipitated and removed, and over 98% of the coprecipitates are co-precipitated into the slag; the precipitated slag is then dissolved in ammonia water and 84 59% of the molybdenum is converted to molybdenum Ammonium acid solution, and the slag in the iron, copper, lead basically insoluble, zinc part of the solution into the ammonium molybdate, the solution can be directly returned to the main flow of ammonium molybdate; after the sedimentation of acid wastewater, and then treated After removing the alkali metal ions, ammonium nitrate can be crystallized.