A staged filtration and disinfection train that turns raw coastal seawater into clean, biosecure, life-safe water for research tanks, aquaria and species cultivation — sediment, plankton, larvae and pathogens removed without harming the stock.
Coastal seawater carries suspended sediment, plankton blooms, larvae, fine colloids and a constant pathogen load — and its quality swings with tides, storms and seasons. Feeding it untreated to a research tank risks turbidity that starves seagrass of light, fouling that blocks downstream plant, and disease that wipes out stock. Reynolds & Bauhm designs the staged pre-treatment train that protects both the organisms and the equipment: coarse-to-fine filtration to strip solids and biology, disinfection for biosecurity, and the controls to hold output quality steady as the raw water changes.
Each stage protects the next — we include only the stages your raw water and species require.
| # | Stage | Typical rating | Removes / purpose |
|---|---|---|---|
| 1 | Coarse screening | 1–3 mm | Weed, debris, larger organisms at the intake |
| 2 | Media / sand filtration | down to ~20 µm | Sediment, turbidity, much of the plankton |
| 3 | Fine bag / cartridge | 10 µm → 1 µm | Fine sediment, larvae, cyst-stage parasites |
| 4 | UV disinfection | 40–100+ mJ/cm² | Bacteria, viruses, parasites (biosecurity) |
| 5 | Ozone (optional) | contact + residual destruct | Colour, fine organics, disinfection |
| 6 | Temperature trim | titanium HX | Set-point conditioning before the tanks |
Pressure sand or multimedia filters carry the turbidity load with automatic backwash. We size bed area, media grading and backwash so the filter recovers fully — even after a storm or algal bloom spikes the raw solids.
Bag or cartridge polishing to 10–1 µm removes the larvae and fine particles that sand filters pass — the stage that makes water suitable for larval rearing and seagrass clarity.
UV (and optional ozone) gives biosecurity between sea and tank. Critically, any oxidant residual is fully managed/de-gassed before water reaches living stock — disinfection that never becomes toxicity.
UV SystemsTurbidity, flow and pressure instrumentation with automatic backwash and dosing keeps treated-water quality steady as tides and weather move the raw seawater around.
Non-metallic and duplex wetted parts, dead-leg-free pipework and clean-in-place provisions keep the train itself from becoming a fouling or contamination source.
Biofouling ControlWhere larval rearing or analytical work demands it, we add 1 µm / sub-micron polishing, activated carbon for trace organics, or RO for make-up and salinity control.
Tell us your intake, raw-water quality and what the water feeds — we’ll design the filtration and disinfection train, sized for the worst-case sea conditions and your species’ tolerance.
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