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Our WAU3 – COMBINED PRETREATMENT UNIT is a “state of the art” combined unit of waste water

pretreatment, designed to fulfill three functions at the same time (filtration, sand removal and grease

removal) into a single, convenient and reliable stainless steel machine.

The same machine is also available in two function version called WAU2 – COMBINED PRETREATMENT UNIT

with filtration and sand removal or degreaser and sand removal only.

The filtration on the WAU system is normally performed by a CFC-T SCREW SCREEN COMPACTOR WITH TANK

but, in case of special needs, the system can be supplied with a GTR-T, with a SSW, With a SMC or with a


The work of the WAU begins when the flow of waste water leads to the tank of the filtration area: inside the

tank, the water is filtered and the sands of greater size are immediately removed.

The wastewater, after this first pass, enters within the sedimentation tank where the finer solids settles to

the bottom, and without a propeller shaft of horizontal transport (located along the bottom of the hopper)

conveys the sand towards the extraction zone. In this area the inclined auger said "extractor" transports the

sand out of the tub.

The screw can be provided with or without shaft, it depending on the type of material to be treated.

The WAU may, as described previously, be equipped with a grease trap system.

This system works in two phases:

The first phase begins once the blower (optional), through pipe with nozzles placed into the tank, enters in

action by separating the oily particles from those of sand.

While the sand a separate turn decays on the bottom of the tank the oily part, it rises towards the surface of

the tub.

The second phase is instead performed from cart degreaser with scraper, which, along the entire length of

the tank, removes the oily substances placed on the water surface and finally download into dedicated



OMCB – MICRO COMBINED PRETREATMENT UNIT is a combined compact machine for filtration and sand

removal and it represent the most efficient and cheapest solution for small wastewater flowrate (until 10


This solution, even if small, has the same strength and extraordinary ease of maintenance of all other

FLUITECO machines, while maintaining the highest performance.

The operation is entirely similar to the WAU2: the incoming water is filtered through a filtrococlea type CF/S

to then go into the settling tank where the internal baffle system allows an efficient separation of sand that

is collected on the bottom of the bath and expelled by manual or solenoid valve.


Combined pretreatment stations SERIES are specifically designed to treat flows up to30 m3/h. These

solutions feature the same robustness and remarkable maintenance simplicity characteristic of FLUITECO


The performance quality remains unchanged: screenings capture ratio of 70%, grit removal efficiency up to

90% for grain size>200microns, and an FOG removal efficiency of no less than85%.

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