Numerous aerator comparison tests show that paddle wheel aerators have the highest oxygen transfer per kWh. The easy-to-understand reason for this is that paddle wheel aerators create a directed flow and distribute the enriched water in the body of water. The renewed aeration of pond water that has just been aerated, as is unavoidable with some other types of aerators, is excluded. PWA paddle wheel aerators are in use in thousands of fish farms and shrimp farms around the world. In Europe, these devices are mostly used in fish farms and larger bodies of water (lakes, ponds).Advantages:- effective oxygen enrichment (O2)- degassing (CO2) with high fish stock- flow generation and distribution of the enriched water in the body of water- uncloggable- excellent price/performance ratio- maintenance and repair (if necessary) on site- very long service life (10 years of continuous operation and longer have been reported)Due to the intensive flow generation, these devices are only conditional suitable for small or medium-sized ponds. Even for the smallest devices with 0.49 kW (P2), the body of water should not be smaller than 500 m². If the water is too small or too shallow, there is a risk of embankments being flushed out and sludge being stirred up. The devices are only conditionally suitable for winter use.It is delivered as a kit with assembly instructions. Please note that devices with three-phase motors must be commissioned by a specialist. It is strongly recommended to only operate the device in connectionwith an appropriate motor protection. Please note that operating the device without a motor protection switch will void the motor warranty.
The Enviro ET300 air pump helps to increase the amount of oxygen in the water. Providing a clean, oil-free air source it is exceptionally quiet in operation, as low as 35dB even when running continuously. The ET300 is easy to service with a competitively priced service kit and is also supported by our two year warranty. With its weatherproof, robust construction it makes an ideal wastewater pump.
Max Flow: 300 Litres per minute
Max Pressure: 0.20 bar
Weight: 18.0 kilograms
Dimensions (L x W x H): 348.5 x 230.5 x 219mm
Connector Size: 26mm
Power: 275W
Charles Austen ET series air pumps offer a robust, compact, and weatherproof design whilst also being energy efficient with their green drive technology. The energy proficient motors ensure low power consumption, the ET series is supplied with a brass barbed connector and an L shaped elbow.
Charles Austen have created this air pump to provide the best oxygenation for your pond or hydroponic system whilst being economical. The ET Series flow rate is 150 litres per minute or 9000 litres an hour and is a compact air pump (256 x 200 x 222mm) and are supplied with 5 metres of power cable.
The Dryden Aqua Air Diffuser is a semi-flexible, high-efficiency fine bubble air diffuser available in 9 different lengths, depending on the air through-put required . It provides oxygen transfer rates of up to 5kg/kw, 10m3/h of air and 1 kg of O2/h. Its semi-flexible construction with its own internal ballast will stay on the bottom of tank or pond without the need to be anchored to the floor.
The Dryden Aqua Air Diffuser combines excellent performance with cost effectiveness for aeration, oxidation and biological treatment.
Dryden Aqua Air Diffuser Key Features
Semi-flexible, tubular construction
Self weighted
Available in 9 lengths from 0.3 – 3m.
Air handling capacity from 1 – 10m3/hr
Less than 0.2 Bar (3 psi) pressure differential
Oxygen transfer efficiency up to 5 kg/kwhr
Resistant to calcification
Easy to clean and maintain
Robust and long-lasting (typical lifespan is 5 – 10 yrs)
Built in non-return valve
Stainless steel and plastic construction
Can be used with Air, N2, CO2
Oxygen Transfer Performance
Surface aerators waste a huge amount of kinetic energy throwing the water into the air, transfer coefficient is 1 kg to 2 kg of oxygen per kW. Membrane diffusers are more efficient at 2 kg to 3 kg of oxygen per kW. The Dryden Aqua diffuser at over 5 kg is therefore the most efficient fine bubble diffuser available and is ideal for retrofit applications as a simple drop in product for tanks and ponds in Aquaculture and Waste Water Treatment.
Numerous aerator comparison tests show that paddle wheel aerators have the highest oxygen transfer per kWh. The easy-to-understand reason for this is that paddle wheel aerators create a directed flow and distribute the enriched water in the body of water. The renewed aeration of pond water that has just been aerated, as is unavoidable with some other types of aerators, is excluded. PWA paddle wheel aerators are in use in thousands of fish farms and shrimp farms around the world. In Europe, these devices are mostly used in fish farms and larger bodies of water (lakes, ponds).Advantages:- effective oxygen enrichment (O2)- degassing (CO2) with high fish stock- flow generation and distribution of the enriched water in the body of water- uncloggable- excellent price/performance ratio- maintenance and repair (if necessary) on site- very long service life (10 years of continuous operation and longer have been reported)Due to the intensive flow generation, these devices are only conditional suitable for small or medium-sized ponds. Even for the smallest devices with 0.49 kW (P2), the body of water should not be smaller than 500 m². If the water is too small or too shallow, there is a risk of embankments being flushed out and sludge being stirred up. The devices are only conditionally suitable for winter use.It is delivered as a kit with assembly instructions. Please note that devices with three-phase motors must be commissioned by a specialist. It is strongly recommended to only operate the device in connectionwith an appropriate motor protection. Please note that operating the device without a motor protection switch will void the motor warranty.
Numerous aerator comparison tests show that paddle wheel aerators have the highest oxygen transfer per kWh. The easy-to-understand reason for this is that paddle wheel aerators create a directed flow and distribute the enriched water in the body of water. The renewed aeration of pond water that has just been aerated, as is unavoidable with some other types of aerators, is excluded. PWA paddle wheel aerators are in use in thousands of fish farms and shrimp farms around the world. In Europe, these devices are mostly used in fish farms and larger bodies of water (lakes, ponds).Advantages:- effective oxygen enrichment (O2)- degassing (CO2) with high fish stock- flow generation and distribution of the enriched water in the body of water- uncloggable- excellent price/performance ratio- maintenance and repair (if necessary) on site- very long service life (10 years of continuous operation and longer have been reported)Due to the intensive flow generation, these devices are only conditional suitable for small or medium-sized ponds. Even for the smallest devices with 0.49 kW (P2), the body of water should not be smaller than 500 m². If the water is too small or too shallow, there is a risk of embankments being flushed out and sludge being stirred up. The devices are only conditionally suitable for winter use.It is delivered as a kit with assembly instructions. Please note that devices with three-phase motors must be commissioned by a specialist. It is strongly recommended to only operate the device in connectionwith an appropriate motor protection. Please note that operating the device without a motor protection switch will void the motor warranty.
