Sample name

C_d value (ppm)

C_d classification

Remarks

Plant 1

19.983

Highly contaminated

Before treated

Plant 2

11.170

Highly contaminated

Before treated

Plant 3

9.239

Highly contaminated

Before treated

Plant 4

16.759

Highly contaminated

Before treated

Plant 5

5.773

Highly contaminated

Before treated

Cannel water 6

5.509

Highly contaminated

Discharge water

ETP treatment water

0.757

Low contaminated

After treated