Classification of Planning Effluent Water Quality
and Typical Wastewater Treatment Process
Additional Treatment Planning Final Effuluent
Water Quality
(mg/l)
Typical Wastewater
Treatment Process
Rapid
 Filtration
Addition of
Coagulant to
 Reactor
Addition of
 Organic
Matter to
Reactor
BOD
mg/l
T-N
mg/l
T-P
mg/l
Conventional Activated
Sludge Process
- - - 10-15 - -
O - - 10 or below - -
Anaerobic-Oxic Activated Sludge Process - - - 10-5 - 3 or below
O - 10 or below - 1-3
O O - 10 or below - 1 or below
Anaerobic-Anoxic-Oxic
Process
- - - 10-15 (20 or below) (10 or below)
O - - 10 or below (10-20) (1-3)
O - O 10 or below 10-20 (1-3)
O O - 10 or below (10-20) 1or below
O O O 10 or below 10 or below [0.5-1 or
 0.5 or below
]
Recycled Nitrification / Denitrification Process - - - 10-15 20 or below -
O - - 10 or below 10-20 -
- O - 10-15 20 or below 3 or below
O - O 10 or below 10 or below -
O O - 10 or below 10-20 1-3
O O O 10 or below 10 or below [1-3 or 0.5-1]
[ Note]
():There is a caes that standard is not set up
[ ]:One of standards is chosen 
O:Additional Treatment is appied
Other evaluated treatment methods which treat the wastewater nearly equal to or cleaner than the typical
wastewater treatment method shown in the table can be also adopted.