废水处理中脱除铬的步骤

The steps of chromium removal in wastewater treatment

简要介绍了铬的形态和特性,并对废水处理中脱除铬所采用的材料方法及步骤进行了详细阐述,指出采用NaHSO3减小pH值,使在中性条件下难溶的Cr3+进一步沉淀,为通过pH和ORP传感器的反应进行自动控制提供了可行性。

This paper briefly introduced the forms and characteristics of chromium,and elaborated in detail the used materials,methods and steps of chromium removal in wastewater treatment,refered to the use of NaHSO 3 to decrease pH,made the indissolvable Cr3 ＋ion further precipitation under the neutral condition,provided feasibility for the automatic control of pH and ORP sensor reaction.