Appendix
97
Chlorine
3
Trivalent chromium
2
Chrome hexa valent
0,1
Chromates
2
Copper
1
Cobalt
2
Cyanide
0,1
Diochemical oxygen demand (BOD5)
500
Chemical oxygen demand (COD)
1000
Etain
0,1
Iron
1
Fluorides
10
Total hydrocarbons
10
Suspended matter
6à0
Magnesium
300
Mercury
0,01
Nickel
2
Nitrites
0,1
Total phosphorus
50
Phenol
1
Lead
0,5
Sulphides
1
Sulphates
400
Zinc and compounds
2
Temprerature ≤ 30
pH : Between : 5,5 and 8,5