CEPIS/OPS- Pollution limits for discharge of tennery effluents into water bodies and sewers

SOUTH AFRICA Parameter	Surface	Sewer
pH Temperature ºC Suspended solids mg/l Settleable solids ml/l BOD5 mg 02/l COD mg/l	5.5-9.5 25 10	5.5-9.0 43 2000-4000 2000-5000
Sulphide mg S2-/l Chrome (lll) mg/l Chrome (IV) mg/l Chrome total mg/l	1 0.05 0.5	5-50
Chlorides mg/l Sulphates mg/l Ammonia mg N/l TNK mg N/l Oil/grease mh/l Phenols mg/l	10	500-1000 20-30 50-100
Solvents mg/l: Hydrocarbons mg/l Nitrogenous mg/l Chlorimated mg/l

SPAIN Parameter	Surface	Sewer
pH Temperature ºC Suspended solids mg/l Settleable solids ml/l BOD5 mg 02/l COD mg/l	5.5-9.5 30 80 40 160	5.5-9.5 30 300 300 500
Sulphide mg S2-/l Chrome (lll) mg/l Chrome (IV) mg/l Chrome total mg/l	1 0.2 2	2 0.5 4
Chlorides mg/l Sulphates mg/l Ammonia mg N/l TNK mg N/l Oil/grease mh/l Phenols mg/l	2000 2000 15 20 0.5	2000 2000 50 40 1
Solvents mg/l: Hydrocarbons mg/l Nitrogenous mg/l Chlorimated mg/l	2	6

SWITZERLAND Parameter	Surface	Sewer
pH Temperature ºC Suspended solids mg/l Settleable solids ml/l BOD5 mg 02/l COD mg/l	6.5-8.5 30 20 20	6.0-9.5 40
Sulphide mg S2-/l Chrome (lll) mg/l Chrome (IV) mg/l Chrome total mg/l	0.1 2 0.1 2	1 2 0.5 2
Chlorides mg/l Sulphates mg/l Ammonia mg N/l TNK mg N/l Oil/grease mh/l Phenols mg/l	200 20 5	300 5
Solvents mg/l: Hydrocarbons mg/l Nitrogenous mg/l Chlorimated mg/l	20 0.1	20 0.1