Ion Exchange

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Ion Exchange
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newterra offers a full range ion exchange water treatment technologies to remove inorganic dissolved solids and prevent scaling. Our expertise in these proven approaches allows us to create comprehensive water treatment solutions for efficient steam generation.

The first and last word for industrial water treatment solutions.

Water Softening  

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Treatment Targets:

Hardness
newterra incorporates ion exchange treatment technologies in our process water treatment systems to remove hardness – scale-forming calcium and magnesium ions – and replace them with soluble sodium ions. Hardness is detrimental to plumbing, valves and downstream equipment. It can also foul RO membranes and cause scaling in boilers, resulting in thermal efficiency losses. Using synthetic strong acid cation resin and coarse gravel, our softening equipment provides continuous hardness removal and low levels of dissolved iron.
Feed water enters the vessel and is evenly distributed over a bed of cation exchange resin. As it flows down through the bed, the resin exchanges ions of sodium for calcium and magnesium. The softened water enters the distributor system at the bottom of the vessel and travels upward via the center riser tube where it is then piped out of the vessel. When throughput capacity of the system is exhausted, it must taken off line for about 90 minutes to restructure the resin bed to its original form and capacity. This regeneration process involves four distinct phases: backwash, salt brine addition, slow rinse and fast rinse.

Advantages

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Provides effective continuous removal of water hardness and low levels of dissolved iron
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Can be automatically regenerated based on manual, time or metered flow demand initiated
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Efficient internal designs provide a typical 10 PSI pressure drop across tank when clean
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Self adjusting backwash flow control
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Minimum energy and maintenance requirements 
Ion Exchange Brochure
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Stand alone tanks or modular skid mounted (pre-piped & pre-wired) options
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Clear backwash drain line for visual inspection (PVC plumbing only)

Condensate Polishing (Sodium or Amine Cycle)

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Treatment Targets:

Hardness, Iron/Copper Oxides
Using synthetic, high temperature-rated, strong acid cation resin, newterra's condensate polishing treatment removes both hardness – scale-forming calcium and magnesium – and iron/copper oxides, replacing them with soluble sodium ions. Plumbing, valves and downstream equipment are all vulnerable to hardness and iron/copper oxides, which can also cause scaling in boilers, resulting in thermal efficiency losses.
The process for condensate polishing is virtually identical to that of softening. Feed water enters the vessel and is evenly distributed over a bed of high temperature-rated, strong acid cation resin. As it flows down through the bed, the resin exchanges ions of sodium for calcium and magnesium and iron/copper oxides. The polished water enters the distributor system at the bottom of the vessel and is piped up and out of the vessel. When throughput capacity of the system is exhausted, it must taken off line for about 90 minutes to be cleaned and regenerated to restore the bed to its original form and capacity. The process involves four distinct phases: backwash, salt brine addition, slow rinse and fast rinse.

Advantages

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Provides effective removal of water hardness in boiler condensate
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Provides effective removal of iron/ copper oxides in boiler condensate
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Can be automatically regenerated based on manual, time or metered flow demand initiated
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Efficient internal designs provide a typical 10 PSI pressure drop across tank when clean
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Minimum energy and maintenance requirements
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Stand alone tanks or modular skid mounted (pre-piped & pre-wired) options
Connect with us today about all your water treatment needs.

Dealkalizing

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Treatment Targets:

Alkalinity
Dealkalization is a critical step in the treatment of boiler feedwater. Our ion exchange systems are designed to remove to 90% alkalinity – a step that improves boiler efficiency by increasing concentration, thus reducing energy wasting blowdown. Equally important, it inhibits the release of corrosion causing CO2 caused by the boiler breakdown of bicarbonate alkalinity.
Dealkalization is a critical step in the treatment of boiler feedwater. Our ion exchange systems are designed to remove to 90% alkalinity – a step that improves boiler efficiency by increasing concentration, thus reducing energy wasting blowdown. Equally important, it inhibits the release of corrosion causing CO2 caused by the boiler breakdown of bicarbonate alkalinity.
The process begins when softened feed water enters the vessel through an inlet valve and is sprayed out over a bed of strong base anion resin media. It flows down through the bed where the resin exchanges ions of chloride for bicarbonate, carbonate, nitrate, phosphate and sulfate. The dealkalized water enters the distributor system at the bottom of the vessel from which it is piped up and out of the vessel. When throughput capacity of the system is exhausted, the unit must be taken off line and regenerated.

There are four distinct phases to the regeneration process: backwash, salt brine addition, slow rinse and fast rinse. This process, which takes about 90 minutes, is designed to restructure the resin bed to its original form and capacity. A small amount of caustic soda is added during the salt brine phase to obtain 90% alkalinity removal.  

Advantages

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Provides effective, continuous alkalinity removal
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Can be automatically regenerated based on manual, time or metered flow demand initiated
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Efficient internal designs provide a typical 10 PSI pressure drop across tank when clean
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Self adjusting backwash flow control
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Clear backwash drain line for visual inspection (PVC plumbing only)
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Minimum energy and maintenance requirements
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Stand alone tanks or modular skid mounted (pre-piped & pre-wired) options
Connect with us today about all your water treatment needs.

Demineralization (Twin Bed)

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Treatment Targets:

Cations, Anions
Twin bed demineralization removes cations and anions. newterra uses this treatment to reduce these dissolved solids to very levels, which helps prevent scaling and under scale corrosion in process loops. Scaling and fouling of boiler tubes also compromises heat transfer and efficiency.

The twin vessels of this demineralization process are plumbed in series. Depending on feed water quality, the first vessel contains either a strong or weak acid cation resin that removes nearly all cations. It's followed by a vessel that contains either strong or weak base anion resin that removes nearly all anions. Feed water enters the first vessel and is distributed over the media. The water then flows down through the bed where the resin continues to exchange ions of Hydrogen (H+) ions for cations, followed by Hydroxyl (OH -) ions for anions in the second unit. The highly efficient process removes nearly all dissolved solids, leaving the treated water with very close to neutral pH.  

When throughput capacity of the system is exhausted, or conductivity rises above a target value, the units must be taken off line and regenerated. There are four distinct phases: backwash, acid addition for the cation vessel and caustic addition for the anion vessel, followed by a slow rinse and fast rinse. This process is designed to restore the resin beds to their original form and capacity and takes the system offline for approximately 240 minutes.  

Advantages

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Provides very low total dissolved solids
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Can be automatically regenerated based on manual, time, metered flow or conductivity
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Efficient internal designs provide a typical 10 PSI pressure drop across tank when clean
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Minimum energy and maintenance requirements
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Stand alone tanks or modular skid mounted (pre-piped & pre-wired) options

Demineralization (Mixed Bed)

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Treatment Targets:

Cations, Anions
Mixed bed demineralization removes all cations and anions. In some industrial processes, these total dissolved solids (TDS) are considered contaminants that must be removed. TDS will scale and foul boiler tubes which inhibit heat transfer and reduce efficiency. 

Mixed bed demineralization contains two resins; strong acid cation and strong base anion. These are homogeneously mixed in one vessel. Feed water enters the vessel and is distributed over the media. The water then flows down through the bed where the resin continues to exchange ions of Hydrogen (H+) ions for cations, followed by caustic (OH -) ions for anions simultaneously. The result is a highly efficient process removes all dissolved solidswith very close to neutral pH. The purified water enters the distributor system at the bottom of the vessel and travels upward via the center riser tube, where it is piped out of the vessel.

When throughput capacity of the system is exhausted, the unit must be taken off line and regenerated. 
 
The individual resin components are separated by backwashing. The density difference between the two resins allows the strong acid cation resin to remain on the bottom, while the strong base anion resin remains on the top. Using respective regenerate, acid and caustic, each resin is then regenerated separately. After regeneration, the resins are remixed using air. This process is designed to restore the resin bed to its original form and capacity and takes the system offline for approximately 240 minutes.

Advantages

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Provides extremely low total dissolved solids
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Effluent service water is near neutral pH
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Can be automatically regenerated based on time, metered flow or conductivity
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Stand alone tanks or modular skid mounted (pre-piped & pre-wired) options
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Efficient internal designs provide a low pressure drop across tank when clean
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Minimum energy and maintenance requirements
Connect with us today about all your water treatment needs.