Exact matches only
Search in title
Search in content
Search in posts
Search in pages
Filter by Categories
{ "homeurl": "http://www.industrialwaterequipment.co.uk/", "resultstype": "vertical", "resultsposition": "hover", "itemscount": 4, "imagewidth": 70, "imageheight": 70, "resultitemheight": "70px", "showauthor": 0, "showdate": 0, "showdescription": 1, "charcount": 3, "noresultstext": "No results!", "didyoumeantext": "Did you mean:", "defaultImage": "http://www.industrialwaterequipment.co.uk/wp-content/plugins/ajax-search-lite/img/default.jpg", "highlight": 0, "highlightwholewords": 0, "scrollToResults": 0, "resultareaclickable": 1, "defaultsearchtext": "", "autocomplete": { "enabled" : 1, "lang" : "en" }, "triggerontype": 1, "triggeronclick": 1, "redirectonclick": 0, "trigger_on_facet_change": 0, "settingsimagepos": "right", "hresultanimation": "fx-none", "vresultanimation": "fx-none", "hresulthidedesc": "1", "prescontainerheight": "400px", "pshowsubtitle": "0", "pshowdesc": "1", "closeOnDocClick": 1, "iifNoImage": "description", "iiRows": 2, "iitemsWidth": 200, "iitemsHeight": 200, "iishowOverlay": 1, "iiblurOverlay": 1, "iihideContent": 1, "iianimation": "1", "analytics": 1, "analyticsString": "ajax_search-{asl_term}" }
Contact Phone Number and Email Address


Your are here : Home > Products & Systems > Water Filters

Quick Selection Header

IWE UV Water Filters

SS Range

Sita Range

Rack Range

SE Range

AM Range

DS Range

SMP Range

IWE Seawater Range

Cintropur UV Water Filters

S-Line UV Water Filters

CS Range

Weedeco UV Water Filters

Weedeco Range

Trojan UV Water Filters

Trojan Range

Residential UV Water Filters

Single Tap

Small Cottage

Small House

Average Family Home

Large Family Home

Light Commercial

Stainless Steel Housings

  • Single Cartridge – Max 10 Bar
  • Single Cartridge – Max 20 Bar
  • Multi Cartridge – Max 10 Bar

For 10 Inch Plastic Housings

Polypropylene Bag Filters

Nylon Mesh Bag Filters

For 20 Inch Plastic Housings

Polypropylene Bag Filters

Nylon Mesh Bag Filters

For Stainless Steel Bag Filters

Water Filters Range


Industrial Water Equipment Ltd manufacture, install, service and repair all types of Water Filters and Water Filtration equipment from the worlds leading brands including Fleck and Siata in both Simplex and Duplex forms.

We also provide, via our technical team a fully bespoke Water Filter design program where we will design and build the optimum Water Filters to suit your needs maximising efficiency and cost. We also offer a wide range of Water Filters Spares available to buy online.

All our Water Filter products are included in our Best Price Guarantee Program ensuring that you get the best deal available.



More Information

What is a Fleck Simplex Activated Carbon Filter?

A Fleck Simplex Activated Carbon Filter is a water filter used to remove contaminants from water that cause a negative impact on the taste, colour and odour of incoming water. Activated carbon is a very porous substance and is usually made from coconut husks, coal or bone that have been intensively treated with steam and with the absence of oxygen. Once this treatment has taken place, the result is a very porous substance. Activated carbon is capable of absorbing thousands of different chemicals and harmful microorganisms. Just one pound of activated carbon has a surface area of about 125 acres.

How does activated carbon work?

Carbon has been used as a means of filtration for hundreds and even thousands of years. Activated carbon works by adsorption. The carbon attracts the solute contaminants and holds them to their porous surface. Due to their pores and their massive surface area, activated carbon is one of the best natural man made material available for adsorption. One all of the pores within the carbine have been filled, the carbon is then exhausted. There is no way to ‘regenerate’ the carbon rendering it no longer effective and requiring replacement.

The process of removing contaminants from water using activated carbon is not one that can be rushed. There needs a low permeate form for this process to be effective.

The permeate water passes over and through the carbon and negatively charged ions of the contaminants are then drawn to the top of the activated carbon.

How does an Activated carbon filter work?

A carbon filter works in a very similar way to a regular filtration system, the main difference being that the filter media is activated carbon instead of resin. Another obvious differences is that the rinse cycle of an activated carbon filter is a 3 stage process a rather that the 5 stage process of a traditional water filter. There is obviously no brine tank and no requirement for brine draw or regeneration process for the resin. Instead a rinse cycle is used to agitate the carbon and clean away any contaminants it has previously removed from permeate flow and send it to drain. The volume of permeate and the contaminants prevalent within your permeate will determine the regularity of the regeneration cycle.

The three-stage rinse cycle of an activated carbon filter comprises of –

  1. Backwash
  2. Slow Rinse
  3. Fast Rinse

What is adsorption and how is it different to absorption?

People are often confused by absorption and adsorption. They are similar actions and work in similar ways; they do however have fundamental differences.

The dictionary term for absorption is – “The process by which one thing absorbs or is absorbed by another”.

If you were to spill a glass of water, you would clear up the spillage using a tissue or kitchen towel. This is because these objects are absorbent. They attract the water in its entirety and suck it up through the kitchen towel until it reached the point of saturation.

The dictionary term for adsorption is – “ (of a solid) hold (molecules of a gas or liquid or solute) as a thin film on the outside surface or on internal surfaces within the material”

If you were to clear us that same spillage of water and you were to use a sheet of writing paper, the paper would become wet on it surface. It would take on some but not all of the water. If the water were to have a colorant added to it such as a dye or cordial, the paper, if left long enough would take on some of the coloured pigment, leaving the water behind.

This phenomenon is known as adsorption and works the same with carbon. If a piece of carbon were placed in a jar with a dyed solution, the carbon would attract the dye pigments sticking them to its surface and leaving the water behind.

Does it matter which type of Activated carbon I choose?

There are several types of carbon available for filtration and they all have different origins. Some originate from bone, coconut shell, wood, peat and petroleum based residue. These substances are most commonly used as during the activation process or applied steam, their internal surface area increases dramatically and is accessible to vapour and fluid making it ideal for adsorption to take place.

All different types carbon work using the same basic principle of adsorption. They all contain micropores, mesopores and macro pores but again, this all depends on the originating raw material.

Because of their individualised characteristics, some carbons do work better at adsorbing specific substances so this should be considered when determining what substance you are hoping to remove.

Coconut shell has pores that are predominantly microporus in range (95%). This raw material is particularly useful for the adsorption of objects of a small molecular weight or applications involving a low concentration of contaminants.

In contrast to this, wood and peat based carbons have pores in the meso/macrorore range making it particularly good at adsorbing objects with a larger molecular weight or applications involving a high concentration of contaminants. An ideal function for this type of carbon is for the process of decolorisation.

A carbon that would place directly between the above two would be a coal-based carbon.

What will activated carbon remove from my water?

An activated carbon filter is ideal for the removal of chlorine, unwanted taste and odours, organics, unwanted colorants, ozone and metals.

Most UK regions dose their mains water with chlorine to disinfect and eliminate harmful microorganisms. Chlorine dosing also prevents water being contaminated through its journey through miles of underground plumbing systems. Regionally, chlorine levels vary between 0.1 – 0.5 ppm. This variation can create inconsistencies with a production line and in situations when consistency is key, a water filter is highly recommended. Chlorine is also considered as a strong oxidant and is not good for RO membranes and softener resins. Because of this, carbon filtration is ideal for use as a pre treatment before RO or water softening.

What Chemicals will activated carbon remove?

Activated carbon can remove hundreds of different chemicals from permeate but this is at varying levels –

A carbon filter can remove the following chemicals Very Effectively

2 4-D, Deisopropyltatrazine, Linuron, Alachlor, Desethylatrazine, Malathion, Aldrin, Demeton-O, MCPA, Anthracene, Di-n-butylphthalate, Mecoprop, Atrazine, 1,2-Dichlorobenzene, Metazachlor, Azinphos-ethyl, 1,3-Dichlorobenzene, 2-Methyl benzenamine, Bentazone, 1,4-Dichlorobenzene, Methyl naphthalene, Biphenil, 2,4-Dichlorocresol, 2-Methylbutane, 2,2-Bipyridine, 2,5-Dichlorophenol, Monuron, Bis(2-Ethylhexyl)Phthalate, 3,6-Dichlorophenol, Napthalene, Bromacil, 2,4-Dichlorophenoxy, Nitrobenzene, Bromodichloromethane, Dieldrin, m-Nitrophenol, p-Bromophenol, Diethylphthalate, o-Nitrophenol, Butylbenzene, 2,4-Dinitrocresol, p-Nitrophenol, Calcium Hypochloryte, 2,4-Dinitrotoluene, Ozone, Carbofuran, 2,6-Dinitrotoluene, Parathion, Chlorine, Diuron, Pentachlorophenol, Chlorine dioxide, Endosulfan, Propazine, Chlorobenzene, Endrin, Simazine, 4-Chloro-2-nitrotoluene, Ethylbenzene, Terbutryn, 2-Chlorophenol, Hezachlorobenzene, Tetrachloroethylene, Chlorotoluene, Hezachlorobutadiene, Triclopyr, Chrysene, Hexane, 1,3,5-Trimethylbenzene, m-Cresol, Isodrin, m-Xylene, Cyanazine, Isooctane, o-Xylene, Cyclohexane, Isoproturon, p-Xylene, DDT, Lindane, 2,4-Xylenol

A carbon filter can remove the following chemicals Effectively –

Aniline, Dibromo-3-chloropropane, 1-Pentanol, Benzene, Dibromochloromethane, Phenol, Benzyl alcohol, 1,1-Dichloroethylene, Phenylalanine, Benzoic acid, cis-1,2- Dichloroethylene, o-Phthalic acid, Bis(2-chloroethyl) ether, trans-1,2- Dichloroethylene, Styrene, Bromodichloromethane, 1,2-Dichloropropane, 1,1,2,2-Tetrachloroethane, Bromoform, Ethylene, Toluene, Carbon tetrachloride, Hydroquinone, 1,1,1-Trichloroethane, 1-Chloropropane, Methyl Isobutyl Ketone, Trichloroethylene, Chlorotoluron, 4-Methylbenzenamine, Vinyl acetate

A carbon filter has a moderate chance of removing the following chemicals –

Acetic acid, Dimethoate, Methionine, Acrylamide, Ethyl acetate, Methyl-tert-butyl ether, Chloroethane, Ethyl ether, Methyl ethyl ketone, Chloroform, Freon 11, Pyridine, 1,1-Dichloroethane, Freon 113, 1,1,2-Trichloroethane, 1,2-Dichloroethane, Freon 12, Vinyl chloride, 1,3-Dichloropropene, Glyphosate, Dikegulac, Imazypur

What can’t an activated carbon filter remove?

A carbon filter is unlikely to remove the following chemicals –

Acetone, Methylene chloride, Acetonitrile, 1-Propanol, Acrylonitrile, Propionitrile. Dimethylformaldehyde, Propylene, 1,4-Dioxane, Tetrahydrofuran, Isopropyl alcohol, Urea, Methyl chloride

All water purification methods have their limitations, the key is to establish what is present in your water supply and what contaminants require removal before deciding upon your purification method. Quite often, multiple systems are required in order for you to achieve the water quality you are looking for. A carbon filter is unable to remove microbial contaminants such as viruses and bacteria, hard water minerals such as calcium and magnesium, and fluoride or nitrate.

Who needs a carbon water filter?

Industries that often use a carbon water filter are –

  • Food and beverage production
  • Aerospace
  • Borehole
  • Pretreatments before Reverse Osmosis
  • Polishing for treated effluent
  • Pretreatment before water softening
  • Ground water purification

Does activate carbon have a shelf life?

 No. As long as the activated carbon is kept dry and out of the way of any contaminants which it may adsorb, it can be stored indefinitely. To maintain the shelf life of the carbon, you also need to be sure that the protective packaging is not compromised in any way and to also be mindful of possible rodent attacks.

Where can i buy an activated carbon filter and any consumables?

 Industrial Water Equipment stock the best quality activated carbon filters and their parts and consumables that are available on the market. Activated carbon filtration systems can be found here :

Fleck Simplex Carbon Filter

Fleck Duplex Carbon Filter

Siata Simplex Carbon Filter

Siata Duplex Carbon Filter

Industrial Water Equipment supply only the best quality activated carbon and it can be found here : Activated Carbon

What is a Birm?

Birm is a black granular mineral that is regularly used for the filtering of devolved Ion and manganese. It is also capable of removing hydrogen sulphide, arsenic and radium. Brim works using either gravity or pressure fed systems.

Within Birm filtration, the brim acts as an insoluble catalyst that enhances the reaction between devolved oxygen and the compounds, which it is designed to remove, ion and manganese.

Within natural ground water, ion is usually un filterable due to excess carbon dioxide. By using Birm, we are able to enhance the oxidation process of the ion from Fe++ to Fe +++ thus producing ferric hydroxide. When Ferric hydroxide precipitates, it then allows the ion to be absorbed by the Birm making the ion filterable. To increase oxygen levels, an air compressor is added to create an air injection into the water supply.

How do you clean Birm?

Effective cleaning of birm is conducted by backwashing the media. Birm is not consumed during the filtration process and after cleaning; it is restored back to its original state. Birm is a particularly economical and resourceful filtration method.

What are the advantages to using Birm?

Birm is particularly long-lasting. With correct and proper cleaning, it can last up to 5 years and because the filtration process doesn’t erode or consume the birm in any way, it doesn’t loose its mass and wont require top-ups.

Chemicals are not required to aid filtration, which not only makes it an n economical option; it also prevents the need to hazardous chemicals to be stored on site. Birm is not a labour intensive media as backwashing is the only process required for cleaning.

Birm works effectively at high temperatures and can also be run at a high permeate flow rate and still produce excellent results.

What are the disadvantages of using Birm?

Birm is Ph sensitive. For ion removal, it is required that the Ph of the permeate flow is no less than 6.8. You can add several different compounds/ chemicals to the permeate before birm filtration to correct the ph such as Clack Corosex, Calcite or soda ash. All of these will increase the Ph and allow for effective birm filtration.

If you require removal of manganese, the Ph of the permeate flow should range between 8.0-9.0.

It is required that there is no oil or hydrogen sulphide within the permeate flow for effective ion removal.

It is required that the organic matter within the permeate flow does not exceed 4-5ppm.

Chlorine reduces the effectiveness of Birm significantly. If chlorine is present within the permeate flow, removal of both ion and manganese will be ineffective.

What industry is Birm commonly used?

Birm is commonly used as a pre treatment within industry. Industries likely to use birm are – pulp mills, paper mills, tanneries, textile plants, dye houses and laundries to name a few. The reasons for such industries using birm is to avoid any stains, streaks, spotting and off colours being found on the manufactured product caused by the presence of ion and manganese.

What flow rate is required for Birm?

Birm is capable of operating effectively at fluctuating or very high flow rates. Ideal flow rates are between 3.5-5 gpm/sq.ft.

Effective back washing should be set at between 10-12gpm/sq.ft.

How much Birm is required?

It is worth noting when filling tank that the birm will expand between 20-40% when going through the back washing cycle. If you keep this rule in mind when filling the tank, the ideal amount of birm is up to 60% of the tank.

What is a Filox R filter?

Filox R is a trademark name for a substance that is used as a filter media. Filox R is made up of 80% manganese dioxide. Its unique formation allows for an enhanced performance, superior oxidation and filtration capacity. The performance of Filox R out performed Greensand and Brim.

What is Filox R used to remove?

Primarily, Filox R is used to remove Ion, hydrogen sulfide and manganese. Filox R is particularly effective at removing manganese due to its high levels of manganese dioxide (75-85%) significantly out performing other manganese removal systems that contain significantly less – Greensand -3% and Birm 1%.

What should I consider before installing a Filox R filter 

The first thing to be aware of is that a little bit goes a long way. It is also important to know that contaminants and minerals present within your permeate water has a substantial effect on how the Filox R performs. It is essential that you test your permeate prior to ordering and designing your water treatment system. Filox R is capable of removing the following contaminants without any other chemical interventions.

Manganese – 3.0ppm

Ion – 15.0ppm

Hydrogen Sulfide – 7.0ppm

If higher levels of removal are required, Filox R can be paired with additional treatments such a an oxidising agent, chemical regeneration or tannin removal.

How long will a Filox R filter last?

As with any filter, it is essential that it is properly maintained and serviced regularly to ensure all filtration media and the filters moving parts remain is a good working condition. IWE offers great servicing packages or serving on an ad hoc basis. More information regarding servicing can be found under equipment servicing. With this in mind, a properly maintained water filter can last indefinitely and Filox R, with correct maintenance will last between 5-10 years.

How do I correctly maintain Filox R?

It is essential for the successful removal of contaminants that Filox R is maintained correctly and the main contributing factor to this is ensuring regular backwashes. Backwashing Filox R will agitate the bed releasing the contaminants and allowing them to be washed away to drain. Filox R is quite a heavy media so therefore requires a good flow to successfully break through and wash the bed. If the bed is not successfully backwashed, it will quickly become fouled and the system will no longer be effective.

How often should I back wash my system?

The answer to this question depends on your incoming flow rate and the chemical characteristics of you water. Because Filox R is particularly effective, it loads up significantly more that other forms of media. Because of this, daily backwashing is recommended to ensure optimal performance.

What if I require a more robust removal of Manganese, Ion and hydrogen sulphide?

Additional treatments are available to enhance the performance of Filox R. These treatments include using oxidisers and chemical regeneration. By introducing oxidising agents such as oxygen, chlorine, ozone, hydrogen peroxide and potassium permanganate, the Filox R will become super oxidised allowing it to perform better. Adding such agents will not have any kind of negative impact on the performance quality or the lifespan of Filox R, if anything, it will improve the performance significantly and also the lifespan.

Will I require any other finishing treatments after using Filox R?

This all depends on the chemical make up of the permeate flow before using Filox R. To discuss this further, its best to talk to one of our water treatment technicians in order to establish what system will meet your exact requirements. The types of media that are commonly used in conjunction with Filox R are Tannin removal media, mixed bed resin, or a carbon filter.

Is Filox R tolerant to chlorine?

Yes. Unlike many other filter medias, Filox R copes perfectly with chlorine. In fact, it actually helps the performance significantly helping to keep it clean and helps with the oxidation of sulphide and iron.

Are there any downsides to Filox R?

Despite Filox R far exceeding the performance of comparable medias, There are rseveral downsides to using the product that buyers may need to be aware of.

Firstly, Filox R is very dense and therefore very heavy. This is quite problematic when it comes to shipping as the cost can soon mount up.

Filox R is rather a lot more expensive than comparable filter medias. Almost three times the price of Birm

The filter housing may also have to be made more robust to accommodate the powerful backwash required. This may also prove to be more costly that other comparable medias.

What is MMF?

Multi media filtration is a collection of different filtration methods combined into a single unit. This single unit is placed before the RO to ensure any contaminants that are likely to scale, foul or chemically attack the membranes are removed before being processed.

The multi media filter is constructed of four filter layers (media’s).

Media 1 consists of 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 consists of a 2mm filter sand/ garnet and is placed directly underneath the finer layer of sand.

Media 3 consists of 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.

The main reason that a MMF is often used as a pretreatment for RO is because collectively, the three layers of media act as a filter allowing a longer run time between backwashes and a more thorough and robust filtration cycle.

What is the best application for a multi media filter (MMF)?

MMF is often used as a pre treatment for Reverse Osmosis equipment and water softeners. Passing permeate through a MMF removes the larger particles and corrosive contaminants such as chlorine from the permeate, protecting softener resins from fouling and preventing clogging of membranes.

The main purpose for a MMF is to reduce the level of suspended solids from water (also known as reducing turbidity. suspended solids usually consist of particles such as clay, silt, grit, algae, organics and other microorganisms.

What can a MMF remove?

A well-maintained Multi-media system can remove particulates up to 12-20 microns. This can be extended up to 5-10 microns when a coagulant is applied. A coagulant forces the contaminants to clog together forming larger particles thus making them easier to be trapped within the filter media and removed.

A MMF is recommended when the silt density index (SDI) is above 3 and the turbidity of the inlet water source is higher than 0.2 Nephelometric Turbidity Units (NTU). Although there are no official guidelines, it is recommended that these measures should not be exceeded when used in conjunction with reverse osmosis equipment to ensure the RO membranes remain in a good condition without any scaling or fouling.

Does a MMF require any maintenance?

Industrial Water Equipment offers robust servicing packages to suit every need. We are also happy to come and service your equipment on an ad hoc basis. Details for such services can be found under equipment servicing

It is recommended that a MMF is serviced at least twice a year to ensure the MMF remains in a good condition. As the purpose of a MMF is to remove particulate or turbidity from the water, eventually over time the MMF will become clogged with these particulates. To determine if a clean out is required, check the PSI of the permeate flow. If the pressure differential has dropped 10psi or the turbidity of the permeate increases by 10% then it is likely that the unit will require cleaning. This cleaning process is carried out in the form of backwashing. It is worth noting that a pressure drop is anticipated across even a clean bed, this usually ranges between 3-7 psi so this natural pressure drop needs to be taken into consideration before initiating a backwash.

What is backwashing and how does it work?

Backwashing is performed by reversing the flow of permeate. This process agitated the whole bed releasing the trapped suspended solids and allowing them to be washed away to drain. Once this process has been perfumed, the MMF will be left regenerated. The only that remains in place is the supporting gravel layer. The gravel is too heavy to be moved by the backwashing process and it also helps to distribute the water evenly across the bed allowing for a full and encompassing clean out.

What flow rate is required for a MMF?

The ideal flow for a MMF is between 3-7 gallons per square foot. It is important that the permeate has time to gain proper contact with the media in order for it to perform its job efficiently. A flow rate that is too high in pressure could prevent the contaminants within the permeate from adhering to the media. It could also cause the already attached contaminants to become dislodged and come out through the outlet rendering the unit insufficient.

How long will a MMF last?

The answer to this question entirely depends on how the MMF is maintained. This included regular servicing and regular backwashing to ensure the media remains in a good working order. With this in mind, a MMF that is looked after properly and receives regular servicing can last up to five years or more before it requires a replacement.

What is a Nitrate removal system?

A nitrate removal system comprises of a vessel, resin beads, a pump and a brine tank. The unit works to remove nitrates that may naturally be occurring in water. The system also attracts sulphates due to the chemical likeness.

What are nitrates?

Nitrates are colourless, odourless and tasteless. Despite this, having nitrates present within you water supply can be particularly problematic. Particularly in industry use. The only way to detect is nitrates are in your water supply is to have you water professionally analysed. Industrial Water Equipment provide a water sampling service and details of which can be found here :

IWE Water Analysis

Nitrates in drinking water in a domestic setting can also be very problematic, not least for infants under six months old. Infants should not consume nitrates in their water/ formula feed as this can lead to a serious condition known as Methaemoglobinemia or blue baby syndrome. This is a serious condition that restricts oxygen flow through the babes hears and leaves extremity limbs a blue colour.

Nitrates are commonly found when there are farms locally that use fertilisers. Water may be contaminated when it is supplied from a private borehole.

What effects do nitrates have?

As mentioned above, nitrates in a domestic setting can cause the very serious condition, Methaemoglobinemia in babies where consumed water is particularly rich in nitrates. Nitrates are also particularly harmful to pregnant women and those whose immune system is compromised.

Within industry, there is another set of problems caused by the presence of nitrates. Nitrates can discolour foodstuffs. This can have a detrimental effect on a production line.

Nitrates can also be very harmful to animals. Farms which source their water from wells or boreholes can be particularly susceptible to high nitrate levels.

How does a nitrate removal system work?

A nitrate removal system works much the same way as a water softener. With nitrate removal, a different polymer ion exchange resin us used that is targeted at removing nitrates and sulphates replacing them with chloride ions. Once the bed is exhausted, the system kicks into a regen cycle.

What happens during the regen cycle?

During a regen cycle, there will no longer be any feed water coming through the unit. There will be approximately two hours where the system will be off-line. If required bypass valve can be fitted to ensure that when the system is in regen, there is still access to un treated water. During regen, the unit will be going through three phases :

Back wash – During a backwash cycle, water is flushed through the system in reverse up through the resin bed. This agitates the resin and separates it allowing for the subsequent phases to be most effective.

Brine cycle – Once the resin has been flushed and agitated by reverse water flow, the system then fills the main vessel, submerging the resin bed with a brine solution drawn from the brine tank. During this process, the resin releases the previously captured nitrates and sulphate and replaces it with sodium ions. The calcium and magnesium ions are then washed away and sent to waste along with any other waste brine solution leaving the resin bed regenerated and like new, and recharging the resin.

Rinse cycle – This phase involves the system being flushed with water to remove any remaining brine solution. Once this process is complete, the system is ready to get back online.

Which type of valve should I use?

This all depends on your intended usage and your daily routine. Much like water softening, a basic time controller is perfectly surfactant for a regulated flow. The system will regen at a pre-determined time regardless of whether or not the resin has been exhausted. Regen times are usually pre selected at 2am as this is deemed the time you are less likely to require water usage although this can be changed should you require.

If you require a more precise regen method and are concerned about salt wastage, a meter controlled system may be more suitable. These systems are usually more expensive but will be able to ensure that the system is only regenerated once the resin had been exhausted. These systems are particularly useful when used in duplex, as when the first column goes into regen, the second column will be put into service.

Does a nitrate removal system require maintenance?

It is recommended that your nitrate removal system is serviced at least twice a year to ensure that the unit and the media remain in a good working order. IWE provides several service packages and servicing on an ad hoc basis. More information regarding servicing can be found under equipment servicing


What is pH and what pH should my water be?

pH – or Potential of Hydrogen is a term used to determine the acidity or alkalinity of a liquid substance.

The Ph scale ranges between 0 – 14. 0 = Acid and 14 = Alkaline. A natural pH is 7. Pure water has a pH of 7.

From 0 – 14, each stage goes down in acidity and up in alkalinity considerably. A pH of 7 is 10x more acidic than a pH of 6 and a pH of 5 is 100x more acidic than a pH of 7. Because of this, when determining and/ or correcting the pH of your water, the slightest increment or decline by even 0.1 can greatly effect the quality of your water and depending on your application, could cost you dearly. A pH correction filter will help you to regulate your water and will protect you from corrosion of pipework, staining of appliances and undesired taste of the water.

Why might I need a pH filter?

pH water filters are commonly used in industry. Particularly where there is a lot of water treatment equipment or water appliances such as boiler houses. A pH correction system would be required when water is supplied from a borehole or natural spring at the pH of the water is usually lower than 7. A pH filter would be used to protect the pipework, equipment and tanks from premature corrosion. Acidic water eats away at metals and will eventually cause holes to form. If you have copper pipes, copper within the water will be elevated and this can cause adverse effects on your health.

In a domestic setting, a pH filter will reduce the green staining that can occur around taps and your bath and basin.

How will the pH filter work?

The unit will be fitted as close to the source of the water supply as possible to ensure that the untreated water has as little opportunity as possible to be exposed to your water pipes or equipment. Permeate water will pass through the unit and through the pH correction media. Once the water has passed through the media, it will then pass back through the main water line.

The desired flow rate is approximately 5 gallons per minute. This flow rate allows for the permeate to be in contact with the filter media long enough to ensure the water is effectively neutralised.

The pH correction media comprises of crushed and processed limestone. The compound used and recommended by IWE is Magnadol (otherwise known as Magnesium Carbonate). The Magnadol dissolves into the water before passing through a filter, the natural alkalinity of the Magnadol will re mineralise the water and raise the pH to a safe and desired pH of 7. Because there is a high calcium level prevalent within Magnadol, there will be an increased water hardness by approximately 50ppm

Periodically, the pH neutralising filter will backwash, which alters the way in which water circulates through the water filter. The water within the backwash cycle flows in from the inlet straight down the centre riser tube, up through the Magnadol bed and away from the control valve to drain. The next phase in a pH neutralising filter regeneration cycle is rinse. The water in a rinse cycle of the pH neutralising filtration system passes just as it does in service, down through the composite pressure vessel and Magnadol filter media and up via the centre riser tube through the neutralising filter control valve and finally, to drain. The pH neutralising filter then returns to its normal service position.

Do pH correction systems require cleaning?

There are two types of heads available for pH correction units. The first and most simple unit is a non-backwash head. This head allows the water to come in, pass through the media and then to flow out as remineralised water. This system is effective and is the cheaper of the two options. the downside to a non-backwash head is that the Magnadol ( magnesium carbonate) can become compacted and clogged and form itself into a solid block. This is because a constant water flow will find its natural channels through the magneto and because there is no reverse agitation the media will be like able to remain loose and absorbent.

The second head available for a pH correction unit is a backwashing head. This system is slightly more sophisticated and the more expensive of the two but the back washing feature will ensure the magnadol is regularly cleaned and agitated, prolonging the life of the magnadol and ensuring the system is working as effectively and efficiently as possible.

Will the pH correction system require any maintenance?

As with any water treatment equipment, it is essential that it is serviced by a water treatment engineer at least one a year to ensure the system remains fully functional and the components remain in good working order. Industrial Water Equipment offer a competitive service package and also offer one off servicing where required.

How often does the Magnadol (magnesium carbonate) require replacement?

This does really depend on your rate of permeate flow and your usage and the acidity of the water. Accurate details regarding sizing of required equipment can be established by calling Industrial Water Equipment and speaking to a water treatment technician on – 01629 55839