Borehole Water Supply : Automatic Filtration System

Synergy Boreholes and Systems Ltd. now offer a compact, self cleaning filter, suitable for installation in domestic households.

The Problem

Sometimes, natural borehole water contains sediment, this can be for example chalk particles or fine sand which filters into the borehole. Although such sediment is almost always harmless to health, it can make the water look unclear, it can rapidly block up conventional cartridge or candle filters, causing inconvenience and increasing running costs for replacement units. It can also cause long term sedimentation problems in plumbing systems.

The Solution

Synergy have now introduced a new automatic backwash filter system which radically reduces the need to frequently replace filter cartridges or candles. These units can be mounted either horizontally or vertically. The unit utilises an electronic timer which can be set to automatically purge the filter at the intervals you desire (see below). A drain outlet is required to allow disposal of the sediment removed. 

The Benefits / How it Works

This system will increase the period between filter services, i.e filter replacement by up to three years.

With the ‘backwash’ method of cleaning, water is rapidly forced downwards, taking any filtered debris with it. At the same time, a valve at the bottom of the filter housing is opened, allowing this water and debris to pass through it as waste. The backwash process takes only a few seconds without the need to dismantle the filter housing or interrupt the water supply. Synergy offers a variety of filter grades – from  20 micron mesh size, through to 200 micron - allowing customers to select the most appropriate filter for their needs.

Supply sources requiring filtration

                  ● Borehole supplies
                  ● Rainwater recycling
                  ● Grey water recycling 

Main usage aspects

                  ● Protection from particle corrosion
                  ● Bacteria control by particulate removal
                  ● Protection from system erosion
                  ● Filtration prior to UV disinfection
                  ● Filtration to protect other water treatment plant
                  ● Large capacity replaceable cartridge filter
                  ● Continuous filtered water feed during backwash cycle
                  ● Models available for horizontal or vertical pipework installation
                  ● Timer controlled fully automatic exhaust/backwash system  

                       ● Backwash intervals 10 minutes to 100 days
                       ● Backwash impulses 5 to 15 impulses
                       ● Impulse intervals 20 seconds

Operating Parameters

                  ● Standard element size - 50 micron
                  ● Optional element micron sizes - 20, 50, 100, 200 micron
                  ● Flow rates 1-16 litres/sec
                  ● Operating pressure - 1.0 -16.0 bar
                  ● Pressure drop - 0.2 bar at given flow rate

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