01
INLET & PRETREATMENT
Check incoming water quality and determine whether suspended solids, chlorine or other substances need to be removed before the resin stage.
INDUSTRIAL WATER TREATMENT • HIGH-PURITY WATER
DEMINERALIZATION
PLANT
High-purity water solutions for industrial applications.
Shivsu Watec DM plants use ion-exchange technology to remove dissolved mineral ions from water. Each configuration is selected around incoming water quality, required capacity and the purity needed for the intended process.
DissolvedIon Removal
High-PurityWater Solutions
CapacityMatched to Demand
Ion-ExchangeTechnology
ION EXCHANGE
RESIN VESSEL
RESIN VESSEL
REGENERATION
Ca²⁺ • Na⁺Dissolved cations
Cl⁻ • SO₄²⁻Dissolved anions
DEMINERALIZATION TECHNOLOGY
01 / UNDERSTANDING DM PLANTS
What Is a DM Plant?
A demineralization plant lowers the dissolved mineral content of water using ion-exchange resins.
DISSOLVED MINERALSCATIONS + ANIONS
Mineral ions in waterCan affect processes that require low-mineral or high-purity water.
Water can contain dissolved minerals and salts such as calcium, magnesium, sodium, chlorides and sulphates. In applications that require low mineral content, these ions may need to be removed before the water is used.
A conventional DM plant passes water through cation and anion exchange resins. The configuration and any additional polishing stages depend on incoming water quality and the purity required for the intended application.
Reduce dissolved mineral ions
Remove a broad range of positively and negatively charged ions.
Support high-purity applications
Select the treatment arrangement around the quality needed by the process.
Configure for site requirements
Match plant design to source-water quality and required treated-water flow.
02 / THE TREATMENT PROCESS
How Does a DM Plant Work?
Ion-exchange stages remove dissolved cations and anions. Pretreatment and additional polishing can be included when the raw water or application requires them.
02
CATION EXCHANGE
Cation resin removes positively charged ions, including calcium, magnesium and sodium.
03
ANION EXCHANGE
Anion resin removes negatively charged ions, including chlorides and sulphates.
04
TREATED WATER
Collect treated water after the required treatment stages and check whether it meets the application's water-quality requirements.
05
RESIN REGENERATION
When the resins reach their operating capacity, regenerate them with suitable chemicals to restore ion-removal performance.
i
System note — The need for pretreatment, polishing and regeneration depends on incoming water quality, resin capacity, operating conditions and the target water quality.
03 / WHERE IT IS USED
DM Plant Applications
Many industries use demineralization plants where water with very low mineral content is required. The final system configuration should be selected for the specific process and its water-quality targets.
01
Boiler feed water
Provide low-mineral water where boiler feed requirements call for demineralization.
02
Chemical industries
Support industrial processes that require controlled mineral content.
03
Textile industries
Supply treated water for textile operations with defined water-quality needs.
04
Power plants
Support water requirements for power-generation processes.
05
Laboratories and research
Help meet low-mineral water requirements for laboratory applications.
06
Pharmaceutical industries
Configure treatment around the water-quality requirements of the intended process.
07
Electronics and manufacturing
Provide water with reduced dissolved ions for suitable production processes.
08
Industrial process water
Select treatment stages based on source water and required purity.
04 / SYSTEM SELECTION
Designed Around Your Water Quality
DM plant sizing depends on both the water entering the system and the quality required at the outlet. Capacity, peak demand and resin regeneration also influence the design.
Water analysis Process-specific design Regeneration planning
01
Incoming water analysis
Identify the dissolved-ion profile and determine whether pretreatment is needed.
02
Required flow and daily demand
Account for water consumption, operating hours and peak flow requirements.
03
Target conductivity and purity
Set the treated-water quality according to the intended application.
04
Resin capacity and regeneration
Consider resin operating capacity and the requirements for chemical regeneration.
05
Additional treatment stages
Include polishing or other treatment when the application needs a higher level of purity.
05 / THE SHIVSU WATEC APPROACH
Find a Suitable DM Plant for Your Process
Shivsu Watec helps evaluate demineralization options around incoming water quality, flow requirements and the purity needed by the application.
Application-led assessment
Consider raw water analysis, intended use and required treated-water quality.
Capacity and flow planning
Account for daily consumption, peak flow and operating conditions.
Industrial application focus
Evaluate the water requirements of boilers, manufacturing and other industrial processes.
Regeneration considerations
Include resin capacity and regeneration needs as part of the system selection.
06 / FAQ
Frequently Asked Questions
Answers about DM plant operation, water quality, capacity and regeneration.
HIGH-PURITYWATERDM PLANT GUIDE
A water softener mainly removes calcium and magnesium ions that cause hardness. A DM plant removes a wider range of dissolved cations and anions, reducing the overall mineral content of the water.
A conventional DM plant removes dissolved ions, but it does not disinfect water or remove bacteria as its primary function. If microbiological control is required, additional filtration or disinfection can be added.
Capacity depends on incoming water quality, water consumption, operating hours, peak demand and the level of purity needed. A water analysis helps determine a suitable plant design.
There is no single schedule for every system. Regeneration depends on incoming water quality, resin capacity, water consumption and operating conditions. Monitoring treated-water quality helps determine when regeneration is needed.
Yes. Some applications need a higher level of purity, so additional treatment or polishing systems can be included when required by the application.
07 / START YOUR PROJECT
DISCUSS YOUR REQUIREMENT Get the Right DM Plant for Your Industry
Plan your high-purity water system with Shivsu Watec.
Share your raw water analysis, required flow rate and intended application. These details help assess a demineralization configuration suited to your water-quality requirements.