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Water Filters – Siata Duplex

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Water Filters – Siata Duplex Range


Water Filters – Siata Duplex

The Siata Water Filter Units are suitable for commercial, industrial and residential applications. All of our systems are either Time Clock or meter controlled.

We supply Simplex, Duplex, Triplex and bespoke water filter systems.

Siata Duplex systems are designed to produce a continuous and uninterrupted supply of filtered water 24/7. These systems have a twin tank that work alternately so that there can always be one tank in service. These systems are particularly useful for industrial or commercial applications.

Siata Duplex Water Softener Information

Siata Duplex Water Filters

Our Siata Duplex systems are available in flow rates from 1.2-29.3 M3. Siata systems are favoured because of their simplicity. They are straightforward to install and very user friendly. All replacement parts and spares are easy to find and are all available online at Industrial Water Equipment. 

All of our Siata Duplex water filtering units comprise of :

2 x vessel and riser tube + filled with selected media (size dependant on your water flow)

1 x Fleck valve (either time clock or meter controlled)

All Siata Duplex systems are available with time clock or meter control valves.

Time clock systems are simple but effective but if water is required 24/7 they are best used with a duplex system. These systems are the less expensive option and are very simple to run with the only downside being that they can be quite wasteful with water and with salt when used with water softening. This is because the system doesn’t necessarily regenerate when the media is exhausted but at a preselected time. With a duplex system, once one column goes into regeneration, the second column will then come into service.

Meter control systems keep wastage of water, salt and media to a minimum. They allow you to select when the regeneration process should take place according to the vessel size, media within the vessel and permeate flow. By using a meter controlled system, you can be assured that when the regeneration takes place, its because the media has bee exhausted and when using a duplex system, the second column can take over the filtration process to the system will stay in service providing filtered water 24/7.

Our systems, weather time clock or meter controlled, Simplex or duplex are available filled with any of the following medias.

Activated Carbon

This hugely porous black powder like substance is most commonly used for the removal of colour taste and odour from your water. It does however have a much larger potential to remove a vast range of chemicals and other contaminants and impurities through a process known as adsorption. Activated carbon comes from a range of different origin, each has their own characteristics making them best suited to certain applications. Origins of activated carbon include – Bone Char, coconut shell, wood peat and petroleum based residue. Each have bean heat treated which dramatically increases the internal surface area thus increasing the ability of adsorption. Activated is regularly used within water treatment as a pre-treatment for a more refined water treatment solution such as reverse osmosis. Activated is particularly favoured for pre-treatment before reverse osmosis as it is highly effective at the removal of chlorine which is known to chemically attack the reverse osmosis membranes.

Multimedia Filtration

Multimedia Filtration (MMF)  this is an all in one four stage filter that is capable of removing most suspended solids and contaminants down to as low as 5 microns with the assistance of a coagulant. Without a coagulant, this filter is more than reducing the turbidity to a range of 10-20 microns. These systems are commonly used as a pre-treatment to a more water treatment system. The four layers within the MMF consist of :

Media 1 is made up from gravel and is placed at the bottom as it is the heaviest and largest particle this layer is also used as a support layer.

Media 2 is a 2mm filter sand/ garnet and is placed directly underneath the finer layer of sand.

Media 3 is a fine filter sand/ garnet and is placed directly underneath the anthracite.

Media 4 consists of Anthracite (coal) and although it is the largest particle, it is also the lightest and it therefore placed on top

The media within the filter is arranged in this way to ensure larger particles are removed at the beginning allowing for finer particles to pass through and be removed by the following layers of media.

Filox R

Filox R Is primarily made up of Manganese dioxide (80%) is is most commonly used to remove Iron, hydrogen, manganese and sulphide. Because of the high content of manganese dioxide, Filox R far exceeds the removal of these substances than similar products available on the market. Filox R is capable of removing the following substances down to these levels:

Manganese – 3.0ppm

Iron – 15.0ppm

Hydrogen Sulphide – 7.0ppm

To increase these levels further, there are additional treatments that can be used to enhance the performance of Filox R such as oxidising agents, Chemical Regeneration and tannin removal.

pH Correction

The perfect pH for water is 7. When water is sourced from mains supply it is usually somewhere between 6.5 – 9.5. Drinking water that is slightly alkaline or acidic is fine. We eat foods and drink that are both acidic and alkaline every day. Problems may occur however when this marginally acidic or alkaline water is being used for a production line. It may have an effect on the product which can be a huge problem, particularly when consistency is key. A pH that sits outside the ideal range can also be corrosive on internal pipework, boilers and water treatment equipment therefore ensuring the pH is correct is usually considered an essential. To correct the pH, we use Limestone. Limestone is formed from calcium and manganese salts which naturally brings the pH of a fluid to a neutral 7. The limestone dissolves quickly into the water therefore the media within the vessels will require regular top-ups. Limestone is non hazardous and easy to handle making it a favourable option for most applications.

Nitrate Removal

Similar to water softening, nitrate removal works using an ion exchange resin but the resin used for nitrate removal is a different polymer resin that is specifically target to attract sulphates and nitrates and replaces them with chloride ions. Nitrates within your water supply can occur when you water source is from borehole or a natural spring whereby nitrates have leached into the water from fertilizers used on nearby farmland. Nitrates in your water can be a major health hazard. They are known to cause a condition called Methemoglobinemia which can effect the elderly, children and those who’s immune system has been compromised. For infants under 6 months, the condition can even be fatal.