Table 6: Values of parameters that determine the way of using sewage sludge [11].

Number ParameterType of reuse
Reuse in agriculture and agricultural land reclamationReuse for nonagricultural land reclamationReuse for the cultivation of plants destined for compost production; reuse for the cultivation of plants which are not destined for consumption and fodder production

1Cadmium Cd [mg × kg−1 DM]202550
2Copper Cu [mg × kg−1 DM]100012002000
3Nickel Ni [mg × kg−1 DM]300400500
4Lead Pb [mg × kg−1 DM]75010001500
5Zinc Zn [mg × kg−1 DM]250035005000
6Mercury Hg [mg × kg−1 DM]162025
7Chromium Cr [mg × kg−1 DM]500 10002500
8Number of Salmonella [cfu × 100 g−1]0u*u
9ATT [egg × kg−1 DM]0≤300≤300

*Undefined.