Composted Sludge

Wetland filter

Soil+10% peat

Tot-P

6650

2560

56

React P

94.8

1

<0.1

NO₃-N

59.3

0.5

<0.1

Kjeldahl-N

10,500

11,200

40

Tot-N

10,600

11,200

40

SO₄

1550

160

20

Ca

16,900

1410

130

Mg

3870

950

<50

K

6440

950

130

Fe

24,000

26,600

1400

Mg

312

968

<5

Zinc

254

81

<5

TOC

13.2

8

0.25

C/N

12

7

63

Fe/P

3.6

10.4

25