Category: Water analysis

BIOLOGICAL TREATMENT OF DIFFICULT WASTES

Toxicity
Things that can cause toxicity include many of the following:
     Metals: lead, antimony, copper, zinc, chromium, cadmium, nickel, manganese
(permanganate), sliver,
    Oxidizers: chlorine, chloramines, any of the group VII compounds in the
periodic table, permanganates, ozone, fluorine, iodine, peroxides, and
so on.
             All of these compounds are direct toxins, because they directly interfere
with the biological [....]

Read more
 

Food-to-Microorganism Ratio(F/M Ratio)

Food-to-Microorganism ratio (F/M ratio)

The food-to-microorganism ratio (F/M ratio) is a process control method/calculation based upon maintaining a specified balance between available food materials (BOD or COD) in the aeration tank influent and the aeration tank mixed liquor volatile suspended solids (MLVSS) concentration The chemical oxygen demand test is sometimes used, because the results are available in a relatively short [....]

Read more