involves adding oxidants to raw water in a process called preoxidation or primary disinfection. This phase of the water
oxidized to nitrate by digestion with peroxydisulfate. The nitrate ions react with 2,6-dimethylphenol in a solution of
oxidants or disinfectants to address these increased concerns. Other treatment objectives for these multiple oxidants
oxidant is not affected by toxic materials in the sample. Changes in the COD value between influent and effluent may
Because nitrites readily oxidize to nitrates, they are not often found in surface waters. When concentrations are
Reagents · Why Does Chlorine Measurement Matter? Chlorine (Cl2) is strong oxidizing agent and ideal disinfectant. Proper
can be used to determine when the desired free chlorine residual is reached. Free chlorine is also used to oxidize iron
· living or occurring only in the presence of oxygen · aerobic biological oxidation · any waste treatment process or other
usually present as ferrous iron (soluble form). When the ferrous iron reaches the surface it is oxidized by air to the ferric
contributing to the demand for replacing chlorination with chloramination. Also, because of reduced oxidizing power
in real-time through continuous measurement of ammonia load. Designed specifically for oxidation ditches and sequencing
used as a disinfectant but also serves as an oxidizing agent for taste and odour control, prevention of algal growths
