Wastewater lagoons
Dry solids and nutrient load in stored manure, studied under a federal grant rather than a sales programme.
reduction in organic nitrogen dry solids
01The plant
An anaerobic hog manure lagoon at a Nebraskan swine operation.
02Before
The lagoon's contents are land-applied as fertiliser, so the question was not clarity but what the solids were carrying. The study was funded by a grant to a county groundwater education group and ran for twelve weeks.
03Treatment
Dosed monthly across twelve weeks, at a quantity set per animal.
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.
04Sizing
Per head of livestock rather than per unit of volume — the loading on a manure lagoon is set by the herd, not by the lagoon's dimensions.
05Method
Dry solids in the manure recorded through the twelve weeks, with a nutrient panel at the close.
06Outcome
The group's conclusion was that the treated manure made a better fertiliser because the nutrients were bound organically and more available to a crop.
At the start
Organic nitrogen carried in the dry solids, with the mineral fraction alongside it.
At the close
62 per cent less organic nitrogen in the dry solids, and reductions across the mineral panel — phosphorus 86.7 per cent, calcium 82.9, zinc 87.9, magnesium 93.6, iron 98.
07Limits
The mineral reductions are the part to read carefully. Bioaugmentation does not remove calcium, zinc, magnesium or iron — those elements do not biodegrade — so what changed is how they are bound and distributed in the material sampled, not how much of them the lagoon contains. Nothing was left untreated, no laboratory is named, and this is an agricultural duty SediLogic does not sell into.
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
This is the duty SediLogic supplies and sizes. Which article depends on where the material sits: Sedivore Spike is the denser solid and carries down through depth to an established blanket, Sedivore Puck is a smaller unit that spreads a calculated dose across the bed, and SediLogic Maintain is a soluble pouch for load carried in the water column — with Sedivore Polar for that same duty where the water runs cold enough to stall a standard blend.
A quantity for your own lagoon comes from the dosing planner, sized against your dimensions and loading from the manufacturer's written dose method. It does not come from the figure on this page, which was set for a lagoon that is not yours.
—Read next
Wastewater lagoons
Municipal24 weeks
of accumulated solids digested
Just over five feet of accumulated solids in the primary aerated lagoon, assessed at 2,365 dry tons. The plant wanted a route that did not involve dredging.
Wastewater lagoons
MunicipalFive months, May to October
reduction in solids volume overall
Accumulated solids across two lagoon cells, against a specification calling for a 50 per cent reduction. The treatment window was bounded by water temperature, which has to stay above roughly 55°F for the organisms to work at all.
Wastewater lagoons
Municipal3 months
of organic solids digested
Decades of loading had taken the lagoon to a measured 20.5 per cent solids, with a dredging quotation in hand and no budget line to meet it.
Your lagoon next
A different plant, a different loading and a different sludge. What decides your result is how much of your own accumulation is organic and treatable, and whether the dose is sized against the lagoon in front of us rather than read off this page. Tell us the dimensions and we will size it.
