DM Plant
Quality Satisfactions
Right Water Systems Present Few Category of Water Treatment Plant:-
We install entire (Fully Automatic as well as Semi-Automatic) on Turnkey basis.
1. ETP Plant Manufacture (Effluent Treatment Plant)
2. STP Plant Manufacture (Sewage Treatment Plant)
3. UF Plant Manufacture (Ultra Filtration Plant)
4. RO Plant Manufacture (Reverse Osmosis Plant)
5. ZLD Plant Manufacture (Zero Liquid Discharge Plant)
6. DM Plant Manufacturer (Demineralization Plant)
7. Swimming Pool Filtration System Manufacture
8. Package Drinking Water Plant Manufacture
9. Water Filtration Plant Manufacture
10. Softener Plant Manufacture
Water Treatment Chemicals (all Category of Water Treatment Chemicals)
All systems spares part available here any time
Demineralization is the process of removing mineral salts from Water by using the ion exchange process.
Principle
To separate the dissolved salt in raw water, the demineralization plant uses a chemical method in which demineralization plant’s function is to remove only dissolved salt using an ion exchange method,
Cation exchange resins will release Hydrogen (H+) ions or other positively charged ions in exchange for impurity cations present in the water.
Anion exchange resins will release hydroxyl (OH-) ions or other negatively charged ions in exchange for impurity anions present in the Water.
Demineralised Water is Water completely free (or almost) of dissolved minerals as a result of one of the following processes:
• Distillation
• Deionization
• Membrane Filtration (RO)
• Nano Filtration)
• Electrodialysis
• Or other technologies.
Demineralized Water also known as Deionized Water, Water that has had its mineral ions removed Mineral ions such as cations of sodium, calcium, iron, copper, etc. and anions such as chloride, Sulphate, nitrate, etc. are common ions present in Water. Deionization is a physical process which uses specially-manufactured ion exchange resins which provides ion exchange site for the replacement of the mineral salts in Water with Water forming H+ and OH- ions. Because the majority of Water impurities are dissolved salts, deionization produces a high purity Water hat is generally similar to distilled Water, and this process is quick and without scale buildup. De-mineralization technology is the proven process for treatment of Water. A DM Water System produces mineral free Water by operating on the principles of ion exchange, Degasification, and polishing. Demineralized Water System finds wide application in the field of pharmaceutical, steam, power, process, and cooling tower etc.
Process
In the context of Water purification, ion-exchange is a rapid and reversible process in which impurity ions present in the Water are replaced by ions released by an ion-exchange resin. The impurity ions are taken up by the resin, which must be periodically regenerated to restore it to the original ionic form. (An ion is an atom or group of atoms with an electric charge. Positively-charged ions are called cations and are usually metals; negatively-charged ions are called anions and are usually non-metals).
Process
In the context of Water purification, ion-exchange is a rapid and reversible process in which impurity ions present in the Water are
replaced by ions released by an ion-exchange resin. The impurity ions are taken up by the resin, which must be periodically regenerated to restore it to the original ionic form. (An ion is an atom or group of atoms with an electric charge. Positively-charged ions are called
cations and are usually metals; negatively-charged ions are called anions and are usually non-metals). The following ions are widely found in raw Waters:
Cations
Calcium (Ca2+)
Magnesium (Mg2+)
Sodium (Na+)
Potassium (K+)
Anions
Chloride ( Cl-)
Bicarbonate (HCO3-)
Nitrate (NO3-)
Carbonate (CO32-)
Important Notes:
| DM Plants works better for TDS in the range of 100 ppm to 600 ppm | |
| Vessels MOC | MSRL/S.S./FRP/poly glass/equivalent. |
| Vessels Make | Right Water Systems TM /Pentair / Equivalent |
| Feed Pump | Horizontal, Centrifugal/ Vertical |
| Resin Make | Thermax /Ion Exchange /Equivalent |
| Skid | S.S./MS |
| Typically DM plants produce TDS < 30 ppm at outlet, depending upon the raw water TDS. | |
| For TDS < 5 ppm- One needs to consider Mixed Bed (MB) unit after DM plant | |
Ion Exchange Resins
There are two basic types of resin – cation-exchange and anionexchange resins. Cation exchange resins will release Hydrogen (H+) ions or other positively charged ions in exchange for impurity cations present in the Water. Anion exchange resins will release hydroxyl (OH-) ions or other negatively charged ions in exchange for impurity anions present in the Water.The application of ion-exchange to Water treatment and
purification. There are three ways in which ion-exchange
technology can be used in Water treatment and purification:
First, cation-exchange resins alone can be employed to soften Water by Base Exchange; secondly, anion-exchange resins alone can be used for organic scavenging or nitrate removal; and thirdly, combinations of cation-exchange and anion-exchange resins can be used to remove virtually all the ionic impurities present in the feed Water, a process known as deionization. Water deionizer’s purification process results in Water of exceptionally high quality
Deionization
For many laboratory and industrial applications, high-purity Water which is essentially free from ionic contaminants is required. Water of this quality can be produced by deionization. The two most common types of deionization are:
• Two-bed deionization
• Mixed-bed deionization
Two-bed deionization
The two-bed deionizer consists of two vessels – one containing a cation exchange resin in the hydrogen (H+) form and the other containing an anion resin in the hydroxyl (OH-) form. Water flows through the cation
column, whereupon all the cations are exchanged for hydrogen ions. To keep the Water electrically balanced, for every monovalent cation, e.g. Na+, one hydrogen ion is exchanged, and for every divalent cation, e.g. Ca2+, or Mg2+, two hydrogen ions are exchanged. The same principle applies when considering anion exchange. The de-cat ionized Water then flows through the anion column. This time, all the negatively charged ions are exchanged for hydroxide ions which then combine with the hydrogen ions to form Water (H2O).
All types Valve
Right Water Systems Our wide range of multiport valves are designed for various filtration/softening applications. They provide excellent performance with a simple customer-friendly operation. A simple turn of the handle performs multiple functions like filtration, backwash, rinse, brine suction and brine rinse. These valves are also aesthetically designed to give an excellent appearance to the final system. The innovative new generation models offer a convenient and unique inlet and outlet in the same line feature for filters and softeners.Features
• Capacity- 1000 LPH to 2,50,000 LPH • Fabricated MS/SS/FRP Vessel • Front facing type filters and softeners • Sky facing type filters and softeners • Top mount/Side mount/Centre Mounted filter and softener • New Generation with inlet & outlet in the same line for filters and softenersMaterial of Construction | Engineering Thermoplastic |
Maximum Flow Rate | As System required |
Valve Connection to Vessel | As System required/BSP Adaptors provided |
Riser Pipe Size | As System required |
Inlet, Outlet, Drain Connections | As System required |
Regeneration Suction Tubing | As System required |
Ejector Type | In-built |
Injector Ratio | As System required |
Injector Suction Rate | As System required |
Maximum Operating Pressure | 4 Kg/cm2 |
Minimum Pressure for Uniform Suction | 2.5 Kg/cm2 |
Accessories | Top and bottom disc type strainer, Suction tubing and foot valve for softeners only |
PERATING PROCEDURE:
Ensure prior to start up – First time after every maintenance:
- Ensure that Activated carbon filter, Cation, Anion, Mix bed, Vessel is filled with specified and required quantity resin.
- Ensure that the all valves are in operation.
- Check that all piping work is carried as per its piping drawing given in manufacturer’s manual.
- Ensure that there is no water leakage.
- Ensure that the DM plant feed water pump gives rated flow and Pressure required for DM plant. Test the water inlet quality. It should be as per specification given in design data. Ensure raw water feed pressure at the inlet is not less than 2.2-3 kg/cm2
Starting Procedure / Instruction of DM Plant
Open the GIDC raw water inlet valve leading to the suction line of
the DM plant feed water pump.
Switch ON the DM plant feed water pump.
Slowly open the pump discharge valve leading to the inlet valve of
The DM plant.
Open the Cation inlet valve V1.
Open the Anion inlet valve V5 and rinse outlet valve V7
Adjust V7 to get specified rinse flow to drain.
Open valve V12 to allow some flow through the conductivity cell.
Switch ON the conductivity meter to ‘CALIBRATE’
If the needle on meter indicates exactly 40, move to ‘READ’
position
Acid Rinse:
Adjust valve V3 to maintain specified flow for the specified time.
At the end of this specified period, it is advisable to take a sample
from valve V10 and test it for pH with the help of pH strip.
If the result of the test is satisfactory, close valves V10 and V3.
Stopping Procedure / Instruction of DM Plant
Switch OFF the conductivity meter.
Switch OFF the DM water feed pump.
Close the Anion outlet valve V6.
Close the Anion inlet valve V5.
Close the Cation inlet valve V1.
Close the GIDC inlet raw water valve.
Acid Injection:
Prepare the stipulated quantity of acid + dematerialized water
Solution by stirring in the measuring tank.
Open the main raw water inlet valve V1, acid ejector power water
valve V3.
Open the acid outlet valve V10.
Open the acid ejector suction valve V4.
Adjust V3 to maintain the specified flow to drain, such that the
acid
The measuring tank is emptied in the specified time, leaving only a
dead
Level of 25 mm in the tank.
Now close valve V4.
Soda Injection:
Prepare the stipulated quantity of caustic soda + dematerialized
water solution by stirring in the measuring tank.
Open the main raw water inlet valve V1, caustic ejector power
water valve V8.
Open the caustic outlet valve V11.
Open the caustic ejector suction valve V4.
Adjust V8 to maintain the specified flow to drain, such that the
acid
measuring tank is emptied in the specified time, leaving only a
dead
level of 25 mm in the tank.
Now close valve V9.
Soda Rinse:
Adjust valve V3 to maintain specified flow for the specified time of 30 min.. At the end of this specified period, close valves V8 and V11.Stopping Procedure / Instruction of DM Plant
Switch OFF the conductivity meter.
Switch OFF the DM water feed pump.
Close the Anion outlet valve V6.
Close the Anion inlet valve V5.
Close the Cation inlet valve V1.
Close the GIDC inlet raw water valve.
Acid Injection:
Prepare the stipulated quantity of acid + dematerialized water
Solution by stirring in the measuring tank.
Open the main raw water inlet valve V1, acid ejector power water
valve V3.
Open the acid outlet valve V10.
Open the acid ejector suction valve V4.
Adjust V3 to maintain the specified flow to drain, such that the
acid
The measuring tank is emptied in the specified time, leaving only a
dead
Level of 25 mm in the tank.
Now close valve V4.
Final Rinse:
Open valve Anion inlet valve V5 and final rinse outlet valve V7.
After @ 20 minutes, open conductivity cell isolation valve V12
Switch ON the conductivity tester. Reading must be below 30
uS/cm.
Close final rinse outlet valve V7.
Open Anion outlet valve V6 to send DM water to service.
After 30 to 40 minutes we can get an acceptable level of
conductivity
Ensure prior to start-up of Mixed Bed Unit – Only first time:
Ensure that mixed bed vessel is filled with specified and required
quantity resin.
Ensure that the all valves are in operation.
Check that all piping work is carried as per the piping drawing
given in manufacturer’s manual.
Ensure that there is no water leakage.
Ensure the specified flow rate.
Test the water inlet quality. It should be as per specification given
in design data.
Chemical Required For Regeneration (Cation & Anion)
HCL for Cation-100% (4.40 Kg. / Regeneration) 80gm/Ltr. Resin
NaOH for Anion- 100% (3.85 Kg. / Regeneration) 70gm/Ltr. Resin
Chemical Required For Regeneration (MB)
HCL for Cation-100% (0.80 Kg. / Regeneration) 80gm/Ltr. Resin
NaOH for Anion- 100% (1.00 Kg. / Regeneration) 70gm/Ltr. Resin