水质指标5类

Ⅰ类Ⅱ类Ⅲ类Ⅳ类Ⅳ类PH6~9EC(us/cm)DO(mg/L)≥7.56532SS(mg/L)COD(mg/L)≤2461015NH3-N(mg/L)≤0.150.51.01.52.0NO3-N(m