Aeration is the most important activity in any aerobic biological treatment system used for sewage and wastewater/effluent. The efficiency of activated sludge system depends primarily on the effective transfer of oxygen from air to water. Surface and floating mechanical aerators have been the standard equipment used so far. Efficient units like rigid tube and membrane diffusers are now available, which operate at higher sote. With energy costs going high and approximately 75% of the total power in any treatment plant is consumed by the aeration system. Thus it is all the more necessary to install energy efficient products. Ultrapure technology and appliances india ltd, company offers the semi flexible air diffusers manufactured by dryden aqua, scotland. These are amongst the most robust arid versatile, fine bubble diffusers available commercially. They are more effective in giving a greater mixing action and aeration efficiency. The diffusers are semi flexible by design, and have their own ballast and will stay at the bottom of the tank without any requirement to secure/anchor them to the bottom. In general, the advantages of dryden aqua air diffusers are as follows:
- semi flexible-very versatile-can take any shape; high sote;
- has its own ballast, hence lower system installed cost;
- 100% access to all components in the system;
- making it easy to install and maintain, without the need to de-water the tank; and
- can be supplied with built-in non return facility.
It is available in 32 mm dia and varied length, from 1 meter up to 15 meters. This gives the advantage of flexible layout of diffusers inside the tank.
