Industrial pre-treatment
Organic load being carried by powdered activated carbon, at a cost that rose with every increase in the feed.
reported annual saving on carbon dosing
01The plant
A petrochemical effluent works carrying part of its organic load on powdered activated carbon.
02Before
Every increase in the incoming organic load meant more carbon dosed, and carbon is a cost twice over — bought, and then disposed of in the sludge it leaves behind. The question put was whether the resident microbial community could be improved enough to carry that load biologically instead.
03Treatment
A blend selected for hydrocarbon degradation added to the system, with the carbon dose then reduced in steps as hydrocarbon removal improved, rather than cut at once.
Every result in this library was measured at an operating plant treating with one of the formulations SediLogic supplies, over the window stated above. It is a field result published as reported, not a controlled trial we ran.
04Outcome
The annual saving is itemised as $102,900 on carbon and $17,700 on the sludge disposal that carbon generates.
At the start
Powdered activated carbon dosed to hold effluent quality, with the dose rising as the load rose.
At the close
Carbon use down 54 per cent with effluent quality held, effluent suspended solids down 26 per cent, and effluent BOD below the permitted figure.
05Limits
The saving is arithmetic on a reduced purchase rather than a measured outcome, and how the 54 per cent was arrived at is not shown — no carbon dose is published at either end. No treatment window is given beyond the annual figure, and nothing is recorded about what the influent did across it. Nothing was left untreated and the works is not named. Reducing a chemical you were buying is a real result; it is not the same thing as a reduction in the material itself.
Only the volatile organic fraction of a sludge responds to any of this. Grit, sand, silt, mineral precipitates and plastics remain at any dose, here and everywhere else.
—What we would supply
Liquid is intended for industrial systems with metered or poured dosing. If the target is settled sludge in a holding basin, discuss a sinking solid and the appropriate application method.
Our written dose tables cover wastewater lagoons. Industrial streams vary considerably, so other applications need a separate review and dose instructions for the specific use.
—Read next
Industrial pre-treatment
Industrial90 days
reduction in extractable petroleum hydrocarbons
Oily sludge holding extractable petroleum hydrocarbons at a concentration that made disposal the only route available.
Industrial pre-treatment
MunicipalNot published
reduction in total petroleum hydrocarbons
Total petroleum hydrocarbons in a separator at more than two hundred times the discharge limit, with pumping the only route to compliance.
Industrial pre-treatment
IndustrialWeeks
ammonia removal
A nitrifying population that would not establish itself, leaving ammonia removal at less than a third of what the permit assumed.
Nitrifying organisms do not survive drying. No product in SediLogic's dry range addresses an ammonia or total-nitrogen permit, and this record is published as part of the field record rather than as an offer.
Your lagoon next
This result came from a different plant. Your sludge composition and operating conditions need their own assessment. Send us your lagoon details for a dosing review; do not use the quantity on this page as your application rate.
