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DVF Filter process_for product pieceUntreated water enters via the inlet which is located at the top of the vessel and is passed through the patented DVF vortex generator. This pipe has a dual outlet configuration inside the vessel which generates a double vortex. This allows for the solids to be suspended above the filter bed. This leaves the water being cleaned free to pass through the specially constructed media bed with less resistance whilst giving the filter bed longer life before backwashing is needed. The filter bed is constructed of 4 different grades of Active Glass media of which the coarse layer is used at the bottom, followed by 2 additional layers of support media and the special blend top layer. The cleaning process is achieved by backwashing the media.

Backwashing the filter bed is achieved by either a set time or, if backwashing is needed sooner, a pressure differential gauge which senses the Delta P when it reaches the pre-set value. Once this has been triggered either by time or pressure differential, then the self-cleaning process begins. The inlet valve shuts followed by the process water out valve.

The backwash valve then opens followed by the drain valve. This forces the water being used for backwashing up through the nozzles at the bottom of the vessel, through the filter bed which lifts the solids from the top layer of the media.

Once lifted off the bed it is discharged through the drain which is located at the top of the vessel. When the backwash is finished at a pre-determined time, the valves shut in reverse and filter process is resumed.

An AC controller allows for the backwash timings to be altered to suit the specific site requirements. It also allows for pumps to be added to the system to aid with process and/or backwash flow. There is also a manual backwash facility which will work in conjunction with the set time and differential pressure settings for the filters.

The self-cleaning cycle is initiated as a result of any of the following:

Receiving a signal from the pressure differential gauge
Time interval parameter set at the controller
Manual start
Remote access

Amiad Water Systems UK Ltd

The DVF Series from Amiad Water Systems UK is a range of efficient, effective and reliable high efficiency filters which produce a supply of clean water that is virtually free of solids and has a reduced bacterial count. Manufactured in the UK.

Amiad Water Systems UK Ltd is based in Swansea, Wales and is a subsidiary of Amiad Water Systems Ltd, a leading global producer of water treatment and filtration solutions,
The company provides premier filtration expertise for commercial, industrial, manufacturing and municipal water systems throughout the UK.

Amiad is constantly striving to improve wastewater treatment and filtration and to this end provides a broad product range of filters that are not only the best technically but also commercially and that are environmentally acceptable.

Energy reduction is not generally the first consideration for installing water filtration. However, the company has developed technology to give filtration down to 1.0 micron on water-based systems. This can result in big energy gains of up to 30 per cent, giving a return on investment of less than 12 months.

The Amiad DVF automatic filter has been engineered in the UK as a proven solution to all the problems effecting other high efficiency media filters that are or were available on the market. The DVF Series is an extremely simple but highly effective range of technology that filter down to 1.0 micron to produce a supply of clean water that is virtually free of solids and has a reduced bacterial count. It is also drinking water approved so the system can be incorporated in the most sensitive applications with the confidence of excellent performance. The DVF Series of filters are ideal for Municipal Water, Industrial Water, Irrigation, Oil & Gas and closed loop heating systems.

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