摘要
某公司三元前驱体生产废水主要来自萃取系统和合成系统,其中合成系统产生的硫酸钠废水碱度较高,几乎不含重金属及有机物;萃取系统的废水则成分较为复杂,含有Ni^(2+)、Mn^(2+)、Zn^(2+)、F^(-)、Cl^(-)等杂质离子和有机成分。原料液中的杂质、有机成分以及pH值对蒸发结晶过程产生较大影响。因此,某公司的蒸发结晶前处理工艺采用去除有机物、重金属和调节pH值的措施处理原料液。通过分析蒸发结晶前处理工艺中除有机物工序、除重金属工艺和pH值调节工序存在的问题,针对性地提出了优化建议。
The process effluent of a ternary precursor manufacturer mainly comes from its extraction system and synthesis system:the sodium sulfate effluent from the synthesis system has high alkalinity,and contains almost no heavy metals or organics;the extraction effluent is more complex,containing impurity organics and ions,including Ni^(2+),Mn^(2+),Zn^(2+),F^(-),Cl^(-).The impurities,organics,and pH value of the feed solution have a considerable effect on the evaporative crystallization process.Therefore,in the pre-evaporative crystallization treatment process,a series of unit operations were conducted by the manufacturer to remove the organics,heavy metals,and regulate the pH value of the feed solution.The issues in these unit operations were analyzed and suggestions for optimizing the process were made accordingly.
出处
《有色冶金节能》
2021年第4期58-61,共4页
Energy Saving of Nonferrous Metallurgy
关键词
三元前驱体
废水
蒸发结晶前处理
硫酸钠
除重金属
除有机物
结晶生长
共沉淀法
ternary precursor
effluent
pre-evaporative crystallization treatment
sodium sulfate
heavy metals removal
organics removal
crystal growth
co-precipitation
