ENVIRONMENTAL FINAL GOVERNING STANDARDS ITALY

ITALY - 4 Wastewater
Table 4.10. Applicable limits of the Reclaimed Wastewater Treatment System
Chemical –
Physical
parameters (13)
Parameter Unit
Applicable limit
for irrigation
and civil uses (10)
Applicable limit
for industrial
uses (9)
pH mg/L 6 – 9.5 (11) 5.5 – 9.5
Temperature °C --
(1)
SAR mg/L 10
Coarse material mg/L Absent Absent
TSS mg/L 10 80 (2)
BOD5 (as O2) mg/L 20 40 (2)
COD (as O2) mg/L 100 160 (2)
Total Phosphorus
(as P)
mgP/L 2 (12) 10
Total Nitrogen (as N) mgN/L 15 (12) 10
Ammonium Nitrogen mg 2
(as NH4)
NH4/L
(11) 15
Electric conductivity uS/cm 3,000 --
Al mg/L 1 (11) 1
As mg/L 0.02 0.5
Ba mg/L 10 20
Be mg/L 0.1 --
B mg/L 1 2
Cd mg/L 0.005 0.02
Co mg/L 0.05 --
Total Cr mg/L 0.1 2
Cr VI mg/L 0.005 0.2
Fe mg/L 2 (11) 2
Mn mg/L 0.2 (11) 2
Hg mg/L 0.001 0.005
Ni mg/L 0.2 2
Pb mg/L 0.1 0.2
Cu mg/L 1 0.1
Se mg/L 0.01 0.03
Sn mg/L 3 10
Tl mg/L 0.001 --
V mg/L 0.1 --
Zn mg/L 0.5 0.5
Total Cyanides (as Cn) mg/L 0.05 0.5
Sulfide
(as H2S)
mg/L 0.5 1
Sulfite (as SO3) mg/L 0.5 1
Sulfate
(as SO4)
mg/L 500 (11) 1,000 (3)
Free Active Chlorine mg/L 0.2 0.2
Chlorides mgCl/L 250 (11) 1,200 (3)
Fluorides mgF/L 1.5 6
September 2012 Italy FGS 4-44
Revision 0