Drum filter Sansai

How does a drum filter work ?

The filter consists mainly of a tank in which is housed a rotating drum: this drum is coated with a 120 micron (0.12 mm) filter membrane on its periphery.

The dirty water from the tank is directed into the drum and, to leave the filter, the water must pass through the filter membrane.

The water from the basin, which is freed from the particles, leaves the filter and is directed towards the biological filtration.

As the dirty water passes through the drum, the particles are deposited by obstructing the small holes in the membrane, which gradually clogs.

The passage of the water is braked, which causes a difference in level between the downstream and the upstream of the sieve.

At this time, the detection system starts a cleaning cycle of the drum. At this moment, the drum rotates very slowly and the nozzles arranged on the upper part (outside of the drum) project jets of water onto the filter membrane: under the pressure of the water, the smallest dirt is expelled Filter membrane.

These dirt are recovered in a gutter and directed to the sewer. The upstream / downstream water level is restored to the next cycle.

This cleaning is minimalist: it only intervenes when necessary.

Advantages

They are numerous and the first is obvious: good filtration is based on the principle of removing as quickly as possible a maximum of particles and extracting them from the water of the basin so that they can no longer harm.

A "normal" filter can only retain what it can ... and the waste it retains degrades in water. With a drum, this is not the case, biological filtration is less stressed, which in many cases allows to reduce its volume.

Second big advantage: provided you have a reasonable UV power, the water is clear all year round. Without problems!

Third advantage: finished cleaning the grid prefilter or brushes, a drum filter is self-cleaning. Let's be honest, this filter still requires a minimum of attention because it is a machine, so some minor interventions are to be expected, but absolutely nothing binding.

Finally, each brand, each model has its peculiarities: it is up to you to determine the exact type of filter you need.

Pumping or gravity, Stainless or polypropylene, with or without biological filter? These are the first criteria of choice but the most important is its size. Remember that a filter is never too large: the rinsing frequency will be comfortable (3 to 4 rinses per hour in summer for ten per day in winter).

On the other hand, a filter too small will consume more water because it will have to rinse more often. We are at your disposal to guide you in your choice.

The highlights of this model

> Basic model with simplified regulation

> UV lamp with immersion 40 Watt Amalgam included.

> Price among the most affordable market.

> Choice of model: gravity or pumping mode.

Characteristics

Drum filter Sansai

Characteristics

Option

Pressure pump