水质稳定指数的计算

水质稳定指数的计算1.饱和指数（L.S.I.）L.S.I.=pH-pHs>0结垢L.S.I.=pH-pHs=0不腐蚀不结垢L.S.I.=pH-pHs<0腐蚀其中pHs=（9.70+A+B）-（C+D）式中A——总溶解固体系数；B——温度系数；C——钙硬度系数；D——M-碱度系数。2.稳定指数（R.S.I.）R.S.I.=2pHs-pH<6结垢R.S.I.=2pHs-pH=6不结垢不腐蚀R.S.I.=2pHs-pH>6腐蚀3.结垢指数（P.S.I.）P.S.I.=2pHs-pHeq<6结垢P.S.I.=2pHs-pHeq=6稳定P.S.I.=2pHs-pHeq>6腐蚀其中pHeq=1.465lg[M-碱度]+4.54式中M-碱度——系统中水的总碱度（以碳酸钙计），mg/L。表1A、B、C、D系数换算表总溶解固体/（mg/L）A温度/℃B450.0702.60600.0822.54800.0942.491050.1062.441400.1182.391750.12102.342200.13152.212750.14202.093400.15251.984200.16301.885200.17351.796400.18401.718000.19451.6310000.20501.5512500.21551.4816500.22601.4022000.23651.3331000.24701.27≥4000≤130000.25801.16钙硬度或M-碱度（以CaCO3计）/（mg/L）C或者D钙硬度或M-碱度（以CaCO3计）/（mg/L）C或者D101.001202.08121.081302.11141.151402.15161.201502.18181.261602.20201.301702.23251.401802.26301.481902.28351.542002.30401.602502.40451.653002.48501.703502.54551.744002.60601.784502.65651.815002.70701.855502.74751.886002.78801.906502.81851.937002.85901.957502.88951.988002.901002.008502.931052.029002.9