Hectron automatic filters for lake and river water filtration
Lake and river water which may be used for industrial, recreational or other purposes very often needs to be filtered. Their suspended solids content is variable and may not be compatible with the expected downstream quality. The use of filtration solutions is therefore essential to remove these particles from the water. Hectron offers the possibility with its AG range of automatic filters to do this in an automated, reliable, maintenance-free way and with an outstanding level of performance.
Why filter river or lake water?
There may be many reasons for filtering lake or river water. Firstly, much of this water is used very often for industrial purposes. It is not uncommon for factories to pump water from a river or lake to supply an ancillary water distribution system within the factory.
This water can be used for various purposes such as cooling, washing or lubricating certain moving parts. In many cases, the presence of particles of various sizes can for example:
damage piping and the entire water distribution system in the plant
damage machinery related to the manufacturing process
prevent the lubrication system from being effective
In all these cases, it is absolutely necessary for the plant to set up an upstream filtration system that can be adapted to the load of particles present in the water and the degree of protection expected.
Some rivers or, more often, lakes are also developed as bathing areas. Although some particles in the water do not present a major hazard to users, filtration is often carried out for aesthetic purposes. Indeed, bathers are often reluctant to immerse themselves in highly contaminated water. They prefer water that looks much clearer.
In order to improve the appearance of water used for bathing, filtration is necessary to remove the largest and most numerous suspended particles.
How can this filtration be carried out?
Many methods or techniques exist to filter river or lake water. All have advantages and disadvantages. But more and more sites are looking for filtration that does not require human handling or too much maintenance. These are both costly and time consuming in terms of downstream processes.
Automatic filter filtration is therefore a solution that is very applicable to suspended solids in lake or river water. It is very relevant to eliminate the numerous suspended solids which have very variable sizes and natures.
Filtration is thus a very good solution for all suspended matter that is scattered (or few in number) but rather small in size. It is often one of the most effective and fastest techniques in this case.
Which Hectron automatic filters can be used for filtration in wastewater treatment plants?
The qualities of these filters are numerous, but we can distinguish 3 main strong points:
Fully automated operation without human intervention.
No consumables to buy and replace.
Very low filtration thresholds to obtain the removal of small particles.
Hectron has a very wide range of filtration thresholds in the AG range: it covers thresholds starting at 0.5-1 microns and going up to 500 microns.
The system has a suction ramp: it only operates when there is a pressure difference between upstream and downstream. This means that there is no unnecessary cleaning and water consumption is low.
There are 4 models in the AG range: AG 100, AG 200, AG 300 and AG 400.
They are all made with a stainless steel casing that can withstand a maximum pressure of 5 bar.
The models offered differ in their respective capacities and flow rates.
The maximum flow rate for the AG automatic filter models is listed below:
AG 100: 8 m3/h.
AG 200: 45 m3/h.
AG 300: 120 m3/h.
AG 400: 340 m3/h.
The inlets and outlets of the different filters are also different in type and diameter:
AG 100: 1'' female thread
AG 200: 2" female thread, 3" male thread and DN80 flanges
AG 300: 3" male thread and flanges in DN100 and DN150
AG 400: DN100, DN150, DN200 and DN250 flanges
The system on which the entire AG range of Hectron automatic filters is based is innovative. This process allows for optimal cleaning when necessary while reducing operating time and water consumption.
The cleaning ramp is only activated when a pressure difference between the upstream and downstream pressure is measured by a pressure switch. The cleaning is therefore only triggered when necessary and in a fully automated manner. The filtering is then carried out via a cylindrical sieve over which the suction ramp passes in a complete rotation. This allows backwashing to be carried out, focusing on the openings of the ramp.
Finally, the models in the AG range are all equipped with automatic controls and are delivered ready for operation immediately after connection.
Then the suction ramp comes into action. The ramp passes over the entire surface of the sieve.
The material is discharged via a solenoid valve that opens during the cleaning process, and is then directed away from the filter.