Dispersible sinking solid
Sedivore Puck
The same duty as the spike in a smaller unit. Pucks are supplied in sizes from roughly 14 g to 170 g and selected against the dose, so a programme can be spread across a cell in many placements rather than concentrated in a few, and can be met without rounding well past it.
01Why this format
Accumulated organic bottom sludge
The two solids answer different halves of the same problem. A spike is chosen for penetration — mass carries it down through depth. A puck is chosen for distribution, and for arithmetic: a smaller unit spreads further across the bed, reaches the margins and the corners a heavier solid does not, can be applied from the bank by hand, and lets a calculated dose be met closely instead of overshot by a whole large unit. Neither is an upgrade on the other, and on most lagoons the honest answer is a combination.
It works at the sludge interface, and it suits a shallower blanket, or one spread across a wide area.
02Specifications
What is published, and what is not.
Each figure below is taken from a product document. Where the documents publish no value, the row says so rather than carrying an estimate: a number that later moves is worse than a stated blank, because an operator may have sized an order around it.
- Pack size
- Dispersible solid; unit sizes from approximately 14 g to 170 g, selected against the dose
- Pack price
- Not publishedNo pack price is published for this format. It is quoted on review rather than from a list.
- Dose rate
- Sized by weight to your lagoon on the same basis as Sedivore Spike, then supplied in whichever unit size meets that weight most closely. The dosing planner returns the weight; the unit size and count are set in the reviewed quote.Sized by weight rather than by unit count, because the unit size is chosen to fit the dose rather than the other way round.
- Storage
- Store dry and cool, away from direct sunlight; keep the container tightly closed.
03When not to buy this
When this product is the wrong answer.
- The blanket sits under real depth. Mass is what carries a solid down, and the spike is the article for that; a lighter unit is the wrong choice for a deep cell.
- The accumulation is largely grit, sand, silt or mineral precipitate, in which case no dose of anything biological will move the number.
- The lagoon is poorly mixed and has not had its aeration assessed. Mixing is complementary to biological treatment, not a substitute for it, and treating around a mixing problem wastes the order.
- Full capacity is needed on a fixed date. Biological treatment is seasonal and gradual; a deadline that cannot move is a dredging problem.
The dosing planner screens for all three and will say so rather than routing you to a quotation.
04Microbiology
What the organisms actually do to the material.
The mechanism is enzymatic hydrolysis. Bacillus species secrete enzymes into their surroundings that break large organic molecules into fragments small enough to be taken up and metabolised. The organisms are not consuming sludge directly; they are releasing the tools that take it apart.
| Enzyme | Acts on | What that is, in a lagoon |
|---|---|---|
| Protease | Proteins and peptides | The protein fraction of settled influent solids and of dead biomass. |
| Lipase | Fats, oils and greases | FOG, which floats and consolidates rather than settling out on its own. |
| Amylase | Starches and complex carbohydrates | Carbohydrate load, typically heaviest on food-processing influent. |
| Cellulase | Cellulose | Plant fibre and paper, which is a large share of a municipal blanket. |
Why Bacillus, and why a dry format costs nothing
Bacillus is the single most important bacterial source of exactly these enzymes, proteases in particular. It also forms endospores — a dormant state that survives drying, heat and time essentially intact, then germinates on contact with water and food. For this job the organisms that do the work are precisely the ones that dry best, which is why the two lead formats are dry and why that costs nothing biologically. Nitrifying organisms are the opposite case: they do not survive drying at all, which is why no dry product can address an ammonia permit.
What the published work supports
Mixtures of protease, cellulase and lipase reduce total suspended solids by 30 to 50 per cent and improve settling, with protease and cellulase together outperforming either alone. One controlled study reported 33 per cent volatile suspended solids reduction.
These figures are the mechanism, not a claim about this product: the peer-reviewed enzyme and hydrolysis work they rest on is collected in the scientific literature.
05Microbiological specification
The figures, and what each one is measured against.
Figures published in the product documents are shown here. Where the documents publish no numerical value, the row says so rather than carrying an estimate.
- Viable count at manufacture
- Not publishedNo viable count is published for this product.
- Guaranteed count at end of shelf life
- Not publishedNo guaranteed viable count at the end of the stated shelf life is published for this product.
- Strains in the blend
- Not publishedNo strain count is published for this product.
- Operating temperature range
- Not publishedNo numerical operating temperature range is published for this product.
- Operating pH range
- Not publishedNo numerical operating pH range is published for this product.
- Biosafety level
- Not publishedNo Biosafety Level designation is published for this product.
- Shelf life
- Not publishedNo shelf life is published for this product.