金昌冶炼厂废水处理工艺探讨

Di scussion on Jinchang Smelter's waste water treatment technology

探讨了石灰—硫酸亚铁—晶种循环处理含重金属离子废水的工艺流程。一段中和槽ｐＨ值控制为８、Ｆｅ／Ａｓ值为１５；二段氧化槽ｐＨ值控制在９３左右、Ｆｅ／Ａｓ值为２０，中和槽ｐＨ值控制在１１、晶种回流比为２０％～３０％，处理后的废水中重金属离子、砷、氟、悬浮物含量及ｐＨ值均低于固定排放标准。

Limeferrous sulphateinoculating crystal process for treating waste water containing heavy metal ions is discussed in which the first stage neutralization tank was operated at pH*$8 and Fe/As 15, the second stage oxidation tank at pH 93 and Fe/As 10 and the second stage neutralization tank at pH 11 and with 20%30% of reflux ratio of inoculating crystal The content of heavy metal ions, As, F and suspended solid and pH of treated waste water are all up to national standard