Our Technology

Fine bubbles is a technology that has been operating since 1923. During recent years, due to new developments, diffusers have reached a  high quality of performance including the construction and membrane materials. Today, more and more companies are upgrading their plants with diffusers as opposed to mechanical aeration systems that consume more energy and have high maintenance costs. 

Fine bubbles aeration is the most efficient and cost effective way to supply oxygen to the biological process of the waste water treatment. However, until now, the installation of a fine bubble aeration system has been limited to treatment facilities with a concrete basin. The sole solution for lagoons lacking a leveled concrete floor has been floating mechanical surface aerators. The employment of floating mechanical surface aerators has many disadvantages: high energy consumption, high maintenance costs, odor and splashing problems and electrical parts in the water.

Mapal has developed an innovative fine bubbles aeration system using floating diffusers that avoids the drawbacks of mechanical surface aerators and can be employed in municipal and industrial treatment facilities without a concrete basin . Mapal's aeration system offers tailor-made solutions to meet customer requirments. The system brings the aeration system to lagoons and reactors where it is not possible to drain for installation and this is the main difference between our floating aeration system to standard fine bubble aeration.

Mapal's CNM units offer the advantages of fine bubble diffusion through an easily inserted able carrier which requires no electrical power to the unit itself. 

Tubular membrane diffusers are used on the bottom of each unit, which are costum manufactured to reach the lowest possible depth of the lagoon in order to increase the oxygen transfer.

Our system has independant withdrawable units, each one fed from its own disconnecting volve which sit on a manifold. Each unit can be moved or removed according to the clients requirments. The units air flow rate varies from 40m3/hr. and up to 500 m3/hr per unit. 

We can use any material of construction to suit the type of waste water, for example: SS316, SS304, PE, PP, etc....

Our working range of water level is up to six meters deep, which is the standard level for reactors due to the fact that the maximum oxygen transfer in waste water is at this level (we do have solutions for deeper basins). 


We purchase our diffusers from leading manufacturers from around the world and independentaly produce the other parts of the aeration units.


Mixing and sludge digesting can be done with either fine bubble diffusers or coarse bubble diffusers. When required, Mapal can supply floating coarse bubble aeration (using the same floats as the fine bubbles).

Read more about Our technology >>