The study noted that FC density in stored effluents dropped from 5.182 log10 CFU/100 mL to below 2 log10 CFU/100 mL after 28 days and the treated sewage met WHO guidelines.
As the temperature of the reactor effluent sharply dropped from the 60°C optimum inside the reactor to 4°C in the effluent collector, all effluent measurements were interpreted as a product of the cellulose-adherent sessile population inside the reactor.
Phase III commenced when the effluent DO level dropped to ~ 1 mg/L to prevent the system from entering denitrification and sulfate reduction conditions.
However, the steady-state PCE concentration in the effluent did not drop at the same rate as mass removal.
"These effluent discharge results exceed the maximum allowable effluent quality parameters permitted under Part E, Item 3 of the Water Licence".
In the beginning of all the pH experiments, the effluent pH increased dramatically and then dropped and approached lower values.
After the treatment by RO unit, the effluent conductivity, turbidity, and total dissolved solid dropped to below 69.2 μS cm− 1, 0.06 NTU, and 53.5 mg L− 1, respectively.
These concentrations dropped by about half in the column effluent.
Oyanedel-Craver et al. used colloidal-silver-impregnated ceramic filters for point-of-use water treatment and determined silver concentrations in the effluent water; the values were initially >0.1 mg/L but dropped below this value after continuous operation [ 27].
