SSI is a leading manufacture of a variety of retrievable aeration systems. We design for safety and reliability while we envision not only proper day to day operation, grids are designed to plant themselves on the floor without dancing about, but for simple retrieval without damage to the diffusers or grid.
When grids are placed in close proximity to one another, a single or dual guide rail can ensure that the grid can be returned to its proper location after lifting out. Guide rails can also help the grid resist horizontal movement when exposed to channel velocity from mixers or high velocity flows. In most cases, we try to avoid hose feeds in favor of rigid stainless pipe in order to improve long term reliability of the system, though where we must use hoses we flange the ends.
Systems are available for disc or tube diffusers, and in any of our advanced membrane options.
Aeration systems in small or narrow tanks can often be designed in a winch liftable configuration. It is convenient for the operator because he need not drain the basin to inspect or service the diffusers, and he does not require an overhead crane.
In larger plants, or where wastewater is aggressive and diffusers may require frequent maintenance, a larger crane liftable aeration system comprised of multiple retrievable grids may make sense. Such systems can equal fixed grid systems in terms of efficiency.
Where retrievable grids need to be installed in close proximity to each other, or where channel velocity from a mixer is an issue in keeping the grid planted in one location on the tank floor, a single or dual guide rail system can be used and can be manufactured (pictured to the right). All our systems can be manufactured with either tube or disc diffusers. Air may be fed either from the side of the basins, or from floating pipes on the surface.