水质对臭氧缓蚀作用的影响研究

Study on the affect of water quality on the corrosion inhibition of aqueous ozone

系统地研究了硬度、碱度、pH值、温度、Cl-、SO42 -、CODCr、悬浮物和TDS(总溶解固体 )对臭氧缓蚀作用的影响。结果表明 ,臭氧具有良好的缓蚀作用 ,其缓蚀作用与水质密切相关 ;硬度对臭氧的缓蚀作用影响较大 ,在硬度为 2 0 0～ 30 0mg/L时 ,臭氧对碳钢表现出良好的缓蚀作用 ;温度、Cl-、SO42 -。

The affect of water quality on corrosion inhibition of aqueous ozone has been investigated systematically. The water quality indexes investigated includes hardness, alkalinity, pH, temperature, Cl -, SO 4 2- ,COD Cr , SS and TDS. The experiments show that good corrosion inhibition can be achieved and the water quality has great effect on corrosion inhibition ratio in aqueous ozone. The affect of hardness is much greater and aqueous ozone shows much better effect on corrosion inhibition while the hardness is 200～300 mg/L. The ratio of corrosion inhibition decreases while the temperature of the solution goes up and/or the concentrations of SS, SO 4 2- ,Cl - and TDS increase.