转炉除尘废水回用过程中的水质稳定研究

Study of water stability in the recycling process of dust-removing wastewater

针对转炉除尘废水高pH、高硬度的水质特点,通过两种实验方法,选取复合配方的水质稳定剂,同时模拟废水的循环使用过程检验水质稳定剂的阻垢效果。结果表明,在高pH、高硬度的水质条件下,所选复合配方水质稳定剂有良好的阻垢性能;对于生产中所用的除尘废水,在高pH条件下,若Ca2+质量浓度<800mg L,所选阻垢剂可将结垢率控制在5%以下。

The dustremoving effluent is characteristic of high hardness and high pH. According to this, some compound waterstabilizer are chosen to research on the scale inhibition capacity. The recycling process of dust removing is simulated and the scale inhibition effect is tested. Results show that compound waterstabilizer has superior scale inhibition capacity. Under the conditions of high pH, if the concentration of Ca2+ doesn't exceed 800 mg/L, the scale inhibitor chosen can control the scale rate at less than 5%.