A water analysis, the flow in m³ per day, and the discharge standard you are held to. If it is an existing plant, add photographs and whatever drawings survive — the process on the drawing and the process actually running are often not the same, and that gap is usually where the problem is. Country and nearest port let us price freight properly.
That is most of what we do. Yanting was another contractor's CASS plant with a design flaw and a provincial inspection notice against it; Rugao was a tannery plant whose biology had been dead for a long time. We are not precious about whose name is on the drawings.
Conventional Fenton needs pH 3–4, so you dose acid on the way in and alkali on the way out, you carry a large ferrous dose, and you produce a lot of iron sludge to dispose of. Ours holds near pH 6 across two catalytic stages: no acid dosing, much less alkali, less sludge, and a safer plant for the operator. Where reagents are imported and expensive, that difference is the whole business case.
Yes — the cultures ship as a stable product with a shelf life, and we specify storage conditions and re-dosing intervals as part of the O&M plan. What matters more is that they are matched to your effluent: we select strains against your sample, which is why the bench test is not a formality.
Typically 20–45 working days for manufacture depending on scope and whether the works is containerised, plus 25–45 days sea freight to most African ports. A pure bio-augmentation and process-control job with no new equipment moves much faster, because the shipment is cultures and carriers rather than tanks.
FOB, CIF and DAP are all available and priced on the quotation. Payment is normally a deposit on order with the balance against shipping documents or an irrevocable L/C at sight; exact terms are agreed per contract.
Yes — we hold long-term operations contracts in China. Today that is two pharmaceutical effluent stations in the Suzhou Biopharmaceutical Industrial Park, just renewed for a further three years; earlier we ran municipal and tannery plants, including the 40,000 m³/day works in Tibet. For an African project the practical form is usually a local operating entity with local staff we train, supported remotely by our engineers, against an agreed performance standard. Tell us the site and the term you have in mind.
Two options. Remote: your contractor installs, then our engineer walks your technician through start-up and seeding over video, in English or French. Or our engineer travels to site — you cover visa, flights and accommodation, and the day rate is agreed in advance. On a biological start-up we generally recommend the second.
An incomplete enquiry is still worth sending — tell us the flow and what is failing, and we will tell you what we would do.