MIL-HDBK-1005/9A
Table 8
Estimated Maximum 30-Day Average for Lime and Sulfide
Final Average Concentrations (mg/L)
Lime ppt.
Lime ppt.
Sulfide ppt.
Followed By
Followed By
Followed By
Metal
Sedimentation
Filtration
Filtration
Antimony, Sb
0.8 to 1.5
0.4 to 0.8
Arsenic, As
0.5 to 1.0
0.5 to 1.0
0.05 to 0.1
Beryllium, Be
0.1 to 0.5
0.01 to 0.1
Cadmium, Cd
0.1 to 0.5
0.05 to 0.1
0.01 to 0.1
Copper, Cu+2
0.05 to 1.0
0.4 to 0.7
0.05 to 0.5
Chromium, Cr+3
0.0 to 0.5
0.05 to 0.5
Lead, Pb
0.3 to 1.6
0.05 to 0.6
0.05 to 0.4
Mercury, Hg+2
0.01 to 0.05
Nickel, Ni
0.2 to 1.5
0.1 to 0.5
0.05 to 0.5
Silver, Ag
0.4 to 0.8
0.2 to 0.4
0.05 to 0.2
Selenium, Se
0.2 to 1.0
0.1 to 0.5
Thallium, Ti
0.2 to 1.0
0.1 to 0.5
Zinc, Zn
0.5 to 1.5
0.4 to 1.2
0.02 to 1.2
1
EPA 600/2-82-001c, Treatability Manual, Vol. III.
(1) Chlorine oxidation. Use chlorine gas or
liquid (depending on dosage rate) with caustic or hypochlorite
solution only for oxidation of cyanide (see Table 7 for
operational conditions).
oxidation of cyanide at alkaline pH (8.5 to 10) in presence of
trace concentration of copper catalyst. Use for oxidation of
phenols at acidic pH (3 to 4) in presence of trace concentration
of metal (Fe, Al, or Cu) catalyst. Since the intermediate
reaction product (hydroquinone) is adsorbed and consumes
adsorbent capacity that may be required for heavy metal removal,
avoid incomplete oxidation of phenols if treatment is followed
by granular-activated carbon.
for oxidation of hydrogen sulfide, mercaptans, and phenols.
Retention times should be determined by bench or pilot scale
testing and are typically 1 to 3 hours.
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