Water Treatment Chemical Suppliers in Namibia

They do different jobs and often work together. Aluminium sulphate is the standard primary coagulant for potable clarification and works best around pH 6–7.5; ferric chloride handles wider pH swings and is favoured for effluent and phosphate removal; and polyelectrolyte/polyacrylamide is a flocculant aid dosed in tiny amounts to bind pin-floc into fast-settling floc. Run jar tests on your actual raw water — Namibian dam water after rains behaves very differently from borehole water — and we can supply small trial quantities of each before you commit to plant volumes.

Sodium hypochlorite 11–11.5% is the liquid workhorse for municipal dosing pumps — simple to handle but it loses strength in heat and sunlight, which matters in Namibia. Liquid chlorine (Cl2 gas in cylinders) is the most economical at large plant scale but demands trained operators and proper gas infrastructure. SDIC granules and tablets are stabilised, transportable chlorine ideal for remote sites, boreholes and emergency disinfection — a lodge in the Kunene can hold a year of SDIC where hypo would have faded by month three.

Hard borehole water is the default across the Namibian interior — calcium and magnesium levels that scale kettles, geysers, boilers and irrigation lines. Sodium hexametaphosphate and our packaged Swachem Water Softener sequester hardness before it deposits; EDTA handles specific chelation needs in process water; and for existing scale, our Scale Remover (in the acids range) dissolves what has already formed. For a lodge or farm, softening the geyser and boiler feed alone usually pays for itself in element replacements.

Both are catalogue-listed. Granular activated carbon (GAC) packs into filter vessels for continuous removal of taste, odour, colour and organics — the standard polish after chlorination or on borehole supplies with musty character. Powder activated carbon (PAC) is dosed into the works when a problem arrives — an algae bloom taste event on dam water, for instance — and settles out with the floc. Plants near Windhoek’s surface dams typically hold PAC for summer events and run GAC year-round.