Constituents
|
Permissible Limits
| |
---|---|---|
BOD
|
300 ppm
| |
Chlorine demand
|
15 ppm
| |
Settleable solids
|
20 ml/l
| |
Suspended solids
|
300 ppm
| |
Ammonia nitrogen
|
30 ppm
|
Parts Per Million
|
Substance
| |
---|---|---|
10.0
|
Aluminum sulfate
| |
0.1
|
Arsenic as AS
| |
2.0
|
Barium
| |
1.0
|
Boron as B
| |
0.2
|
Cadmium as Cd
| |
0.1
|
Chromium (hexavalent)
| |
0.5
|
Chromium (total)
| |
1.0
|
Copper as Cu
| |
2.0
|
Cyanide as CN
| |
10.0
|
Ether soluble matter
| |
5.0
|
Iron as Fe
| |
1.0
|
Lead as Pb
| |
0.01
|
Mercury as Hg
| |
1.0
|
Nickel as Ni
| |
0.005
|
Phenols
| |
0.2
|
Silver as Ag
| |
0.02
|
Selenium
| |
50
|
Total nitrogen
| |
5000
|
Total solids
| |
3.0
|
Zinc as Zn
| |
100
|
Oil, grease or fat
|