Aeration & Oxygenation systems
Environmental & sustainable water treatment |
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| The Dryden Aqua fine bubble air diffusers is perhaps one of the most efficient and versatile diffusers for all forms of aeration, ranging from thermal Destratification of lakes and reservoirs to effluent treatment in activated sludge plants and landfill leachate. Our diffuser is unique because of its very high oxygen transfer efficiency, ease of maintenance and installation. Our semi flexible diffuser range in size from 0.3m to 5m in length, they have their own internal ballast and can be used in tanks or lagoons. The diffusers do not need to be anchored to the base of the tank and they can be easily removed from cleaning or maintenance while the tanks is full of water or the blowers running. Installation usually involves an air ring main around the perimeter of the the tank / lagoon, saddle clamps are fitted to the air ring main and 1/2" hose connected to the saddle and the diffuser is connected to the other end of the hose. The diffuser is then simple dropped or thrown into the lagoon. Installation could not be simpler, and maintenance is very easy, you simply pull on the hose to recover the diffuser. |
Specification
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| Lakes, Ponds & Reservoirs | ||
 | Diffused aeration is the ideal means of preventing thermal stratification and high surface water temperatures in lakes, and reservoirs. Aeration and mixing of the water can dramatically improve water quality with only a small amount of energy input. The key is to mix the water column and prevent both thermal and chemical stratification of the water. This in turn stabilizes the ecosystem and prevents excessive blooms of algae and zooplankton. | |
| Landfill Leachate | ||
 | Dryden Aqua fine bubble air diffusers area ideal for the treatment of activated sludge treatment of landfill leachate in either tanks or lagoons. Indeed the Dryden Aqua product is the standard diffuser used for this application in the UK. Our air diffusers have their own internal ballast, so there is no need to anchor the diffusers to the base of the tank. Simply fit an air distribution ring main around the perimeter of the tank or lagoon, connect 1/2" flexible hose onto the air ring main and a diffuser on the end of the hose, then simple drop the diffuser into the tank. Cleaning and maintenance is also very simple, simple pull of the hose the lift the diffuser our of the water, give it a quick wash with a low pressure hose of water or a brush, and then drop back into the tank. One diffuser code 6.2.10 and 10 cubm/hr of air with oxidise 10 kg of COD / BOD per day. |
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| Sewage effluent | ||
 | Sizing of an Aeration system for sewage effluent treatment 1 x diffusers 6.2.10 is required for every 50 to 100 pe (population equivalent) and will provide 10kg to 20kg of oxygen per day . Air flow per diffusers 6.2.10 = 10 cubm/hr. A population of 10,000 people therefore requires 100 diffusers, or flow of 1000 cubm/hr and 2 x 22kw air blowers. | |
| Farm Slurry | ||
 | Using Dryden Aqua diffusers, one of our 3m long diffusers code 6.2.10 rated at 9 to 10 cubm/hr of air, will provide sufficient oxygen and mixing of a slurry tank, receiving the effluent from 5 to 10 cows, depending upon how the farm is operated. The treatment system will remove 90% of the free ammonium nitrogen, and bio-reduce approx 80% of the organic matter to give a very consistent high quality fertiliser. The treated waste water, may be filtered through a screen to remove docken seed. or through an AFM filter to remove virtually all of the solids. | Farm waste slurry treatment |
| aquaculture | ||
 | We have been manufacturing air diffusers for 25 years, for fish transportation, cage aeration systems and tank or raceway systems. In freshwater systems, one diffusers 6.2.10 and 10 cubm/hr of air will support 1000 kg of fish below 15 deg C, at higher temperatures you will need two diffusers. Our diffusers have their own internal ballast so you do not need to anchor them down to the base of a tank. All you do is connect a hose and drop them in to the tank. The diffusers produce a very fine bubble, and in marine systems the bubble is even smaller, such that for Tiger shrimp lagoons, one diffuser will support 1000 kg of shrimps. |
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