ENVIRONMENTAL FINAL GOVERNING STANDARDS ITALY

ITALY - 4 Wastewater
Table 4.1.2-a. Required Systems in the Tuscany Region for the Treatment of Domestic and
Urban Wastewater Generated by Installations Less Than 2,000 IE and Discharging to Fresh
Water
Quality of Fresh Water Normal
Good
or
very
good
Normal
Good
or
very
good
Normal
Good
or
very
good
Inhabitant Equivalents (IE) < 100 101 to 500 501 to 2000
Treatment systems A B C D E F
Septic tank (two-stage, three stage or Imhoff)
and sub-irrigation and drainage (2)
X X
Septic tank (two-stage, three stage or Imhoff)
and draining trench
X
Septic tank (two-stage, three stage or Imhoff)
and sub-surface phytopurification with
horizontal flow (HF)
X X X X
Septic tank (two-stage, three stage or Imhoff)
and sub-surface phytopurification with vertical
flow (VF)
X X X X X
Septic tank (two-stage, three stage or Imhoff)
and pond or series of ponds (1)
X X X X
Pond (optional) and phytopurification with free
water surface (FWS) (1)
X X X X
Septic tank (two-stage, three stage or Imhoff)
and combined phytopurification (HF/VF/FWS)
(1)
Septic tank (two-stage, three stage or Imhoff)
and combined phytopurification (HF/VF/FWS)
and sand filter (1)
Anaerobic pond and combined phytopurification
(HF/VF/FWS) (1)
X X X
X X X
X X X X
Septic tank (two-stage, three stage or Imhoff)
and intermittent sand filter
X X X
Three-stage septic tank and pond (1) X
Septic tank (two-stage, three stage or Imhoff)
and percolating filter or activated sludge or
biodisc filter
X X
Septic tank (two-stage, three stage or Imhoff)
and prolonged venting system
X
Primary treatment and OX-ANOX system X
Sequence batch reactor (SBR) X
Clariflocculation X X
Biological plant and phytopurification X
Alternate cycles process
Notes:
X
(1) The use of ponds or lagoons shall be approved. All permits shall be obtained through the Italian Base
Commander.
(2) The sub-irrigation in the shallow subsoil is considered a treatment device carrying out oxidation and
digestion of the wastewater and therefore is not considered a device for discharge to soil.
September 2012 Italy FGS 4-31
Revision 0