Oxygène dissous — le KPI qui compte toujours
Espèces froides OD ≥ 8 mg/L ; RAS chaud 5–7 mg/L ; crevette 4–5 mg/L.
Pilier · Eau, Oxygène, Filtration
Qualité d'eau, oxygène et filtration
La gestion de la qualité de l'eau est le principal déterminant opérationnel de productivité aquacole — l'oxygène dissous, le TAN, le CO₂, le pH et les MES contrôlent la biologie de chaque bac ou étang.
Filtration mécanique : tambour, disque, bead ?
Les tambours dominent au-delà de 100 m³/h avec mailles 60–90 µm.
Biofiltration : dimensionner la nitrification
MBBR à 500–800 m²/m³ est le standard RAS.
Stripping du CO₂ et contrôle du pH
Tours garnies ou cascades ramènent le CO₂ de 15+ à < 8 mg/L.
Désinfection : UV, ozone, ou les deux
L'UV tue sans résidu ; l'ozone oxyde les organiques. Les RAS bancables combinent les deux.
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FAQ
Buyer-first · Supplier-neutral
One RFQ. Multiple project-matched suppliers. Zero cost to buyers.
Short answer
What do buyers need to know about Water Quality Oxygen Filtration?
Water Quality Oxygen Filtration affects both project cost and project risk, so it belongs in the specification stage rather than the purchasing stage. This page sets out what commercial buyers assess, what typically drives cost and lead time, and which questions to put to suppliers before signing. You can turn any of it into a confidential RFQ in a few minutes.
- Who it is for:
- Investors, operators and project developers specifying commercial systems
- Cost drivers:
- Capacity, water source, energy price, permitting and logistics
- Next step:
- Turn the requirement into a confidential RFQ
- Cost to buyers:
- No fee charged to the buyer
Before you request quotes
Equipment scope
What equipment does a commercial aquaculture project actually need?
A grow-out project typically needs holding infrastructure (tanks, ponds or cages), water movement (pumps, piping, valves), aeration or oxygenation, water treatment appropriate to the system, feeding equipment, grading and handling gear, monitoring and alarms, and backup power. RAS adds mechanical filtration, biofiltration, degassing, disinfection and tighter process control. Hatchery and processing scopes are specified separately.
Which equipment should be specified before requesting quotes?
Specify the items whose sizing changes everything downstream: design biomass and stocking density, water exchange or recirculation rate, oxygen demand at peak temperature, and installed pumping head. With those four fixed, suppliers can quote aeration, filtration, pumps and power on the same basis. FishMatch calculators produce these figures and attach them to the RFQ.
Can equipment be sourced in stages?
Yes, and phased procurement is common. The usual sequence is water supply and holding infrastructure, then aeration and treatment, then automation and monitoring, then processing and cold chain. Staging works when interfaces and capacity headroom are defined at the start; otherwise later phases force replacement rather than addition.