Stations

Chemical parameter (mg/L)         

COD

BOD5

BF

T iron

Y1

5760

900

6.4

21.8

0.03

12

0.7

22

0.5

Y2

34,000

1700

20

1.3

0.006

8.9

0.1

500

3.1

Y3

3700

800

4.6

21

0.9

17.2

13.2

30

6.2

Y4

13,800

1000

13.8

350

1.4

14.9

47.7

230

1.5

Y5

4030

750

5.4

0.9

0.012

12

1

36

0.13

Y6

37,900

8000

4.7

3

0.51

34.4

0.6

1.5

2.4

Y7

580

180

3.2

1.7

0.5

8.5

0.5

700

0.5

Y8

51,300

1500

34.2

14.2

0.6

8.27

62.5

2300

36.9

Y9

9170

1100

8.3

112

0.8

12.5

48.2

3.4

2.4

Y10

15

11.25

1.3

1.1

0.026

7.41

0.6

1.5

0.3

K11

3800

850

4.5

12.1

0.3

75.8

22.8

90

5.5

K12

7340

1000

7.3

11.2

1.33

6.11

0.4

16

1.2

K13

5510

1500

3.7

20

0.003

54

5.7

1.5

0.6

P14

8320

700

11.9

11

0.05

10.8

0.5

1.5

1.8

P15

3400

800

4.3

4

0.04

15

0.1

1.5

0.015

P16

119

42

2.8

0.024

0.003

1.4

2.28

1.5

0.015

A17

2690

280

9.6

0.002

0.06

21.7

0.9

1.5

12

VG*

500

150

50

-

-

-

-

5