Water Treatment Plant

DEMINERALIZATION PLANT

Ion exchange technology is used to remove salts (cations and anions) from the water Soluble chemical compounds, when dissolved in water, become ionized; that is their molecules dissociate into positively and negatively charged components called ions. Consider common table salt, sodium chloride. In its solid form, this compound consists of one sodium atom (Na) and one chlorine atom (Cl) tightly coupled together (NaCl). When dissolved in water, however, the compound splits into two ions, Na and Cl.

Ion Exchange
A process in which Contaminant ions are exchanged from water is called ion exchange. This process occurs in ion exchange resin Initially, resin is loaded with hydrogen (H ) ion for cations and hydroxide (OH-) ion for anions. As water passes through the resin, the contaminant ions in the water displace the loaded ions from the sites on the resin. This is because the resin has a greater affinity for the contaminant ions. Affinity for most resins is based loosely on ionic size and charge

Regeneration
Over a period of time most of the cation resin gets converted into Ca, Mg, Na form and it has no Hydrogen Ions (H ) to replace Ca, Mg, Na ions and the anion resin gets converted into Cl, SO4, SiO2 form and it has no Hydroxyl Ions (OH-) to replace Cl, SO4, SiO2 ions.. This is called the resin exhaustion or end of service cycle. The exhausted resin has to be brought back into Hydrogen (H ) Hydroxyl (OH-) form to continue the process and use it again and again. 
The procedure of converting exhausted resin into Hydrogen (H ) Hydroxyl (OH-) form is called regeneration

Separate Bed DM Systems
Ion exchange occurs across at least two different columns. The first is a cation column, which is filled with resin loaded with positive hydrogen ions (H ). As water passes through this column, the positively charged impurities in the water are exchanged for the hydrogen ions
A similar exchange takes place in the second column, the anion column. This column is filled with resin loaded with negative hydroxide ions (OH-). As the now cation-free water from the cation column passes through, any negatively charged contaminants are removed from the water and replaced by hydroxide ions from the resin. The water now has a neutral pH. hydroxide [OH-] and hydrogen [H ] ions exchanged in the columns combine, forming water [H2O)

Mixed Bed Systems 
In a Mixed Bed System water is purified by removing all ions in one pass through an ion exchange bed. The bed consists of cation and anion resins in mixed condition, so that ions are actually removed in the same two step ion exchange process. All the traces of Cations and Anions of the dissolved solids and silica in the water are replaced by Hydrogen ion (H) and Hydroxyl Ion (OH-) respectively. We get very high purity demineralized water at the outlet of the MB.

WATER SOFTENER

Raw Water is termed “Hard Water” when it contains dissolved salts of Calcium & Magnesium. Temporary alkaline or carbonates of calcium & magnesium, Permanent non alkaline or noncarbonated hardness is caused by dissolved chlorides, sulphates or nitrates of calcium & magnesium, Softener removes hardness in water. 

Process 

The softening process consists of passing raw water containing hardness through a bed of cation resin in sodium form. The hardness ions Ca & Mg are taken up by resin and in exchange sodium ions are relinquished from the resin. Raw water will continue to get softened till the resin gets exhausted. Bringing back the resin to it original form is called regeneration. Softener resin is regenerated by sodium chloride (NaCl) of 10 -15% Concentration. 

Requirement for Designing Softener: Hardness of Water, Flow Rate/Hour, Single Charge Softening. 
WE OFFER ALL RANGES OF WATER SOFTNER
Note.  :-  Inlet  Water  should  be  colourless  free  from  turbidity, oil, grease, Organic  Matter.
Treated   water  quality  depends  on  Raw  Water  Analysis.  
(   FRP  Vessels  &  MPV  can  also  be  used  for  Filter  &  DM  Plants     ) 

PRESSURE SAND FILTER 
We offer durable pressure sand filters that are used for the removal of suspended solids & turbidity. The pressure sand filter is extremely robust method of removing suspended solids from water. The filtration medium comprised of multiple layer of sand having different size & specific gravity. As per the needs of customers, we can offer sand filters in various sizes and material apart from hand operated or fully automatically, Filter is used for separating water suspended solid for better operation of filter, suspended solid should be coagulated. The advantages of pressure filter are high speed of filtration, less space, low charge and prevent heat loss after the warm or hot lime process.   

pressure filters, which may be vertical or horizontal, have cylindrical steel shells and dished heads. The flow in pressure filters is downward. Usually sand or anthracite is the filter medium in a bed consisting of either one or two grades of sand or anthracite. A gravel bed supports the filter medium, prevents fine sand or anthracite from passing into the under drain system and distributes backwash water.   

The water, which should be filtered, enters over the top of filter and pass from its bed then they collected at the bottom of filter. The suspended matter is strained out of the water and held in the voids between the filtering granules. The accumulation load of suspended matter in the bed causes an increasing loss of pressure during the filter run. When this loss reaches a predetermined limit, the filter is backwashed upward, discharging the suspended load out to the sewer. 

ACTIVATED CARBON FILTERS 
 Activated carbon filters are used for removing free chlorine, phenol, taste and odour as well as reduction COD/ BOD. The specially designed filters are made from FRP closed vessel fitted with multi port valves and are operated under pressure. The water is passed through the under bed media & granular activated carbon layer. These filters have a back flushing arrangement, which easily flushes away the deposited impurity at carbon granules. 

Activated carbon filter, for removal of free chlorine, phenol, taste and odour as well as reduction COD / BOD.    
Granular Activated Carbon is a well establishing & proven technology for the removal of taste, odours and gases from water.
It is extremely effective in the removal of many Volatile Organic Compounds (VOC) and other Petroleum-based contaminants.

The Ultra Safe Filters use Granular Activated Carbon, manufactured from hard coconut shell having Iodine content of 900-1000 ppm, whose extraordinary molecular structure adsorbs much more molecules of contaminant molecules that adhere to its surface, through absorption and adsorption.

Special Features

• Filtration Plants are available in different models, for different applications such as 
  Sand Filter, Activated Carbon Filter, Sand cum Carbon Filter & Iron Removal Filter.
• The materials of construction are MS/SS304/SS316/MSRL/FRP.
• Flow rate Capacity: 1,000 LPH to 1, 00,000 LPH.
• Unique pipeline design in SS filters involves no welded joints.
• Backwashing facility for cleaning the system.
• Low-maintenance and operating costs.

REVERSE OSMOSIS PLANT
The Numatik Engineers Pvt. Ltd. desalination unit uses the reverse osmosis process to remove dissolved solids from brackish or saline water. The process is continuous and requires no regeneration chemicals. The unit is factory tested and easy to install and operate. Treated water quality is continuously monitored by a Total dissolved Salt indicator.

Reverse Osmosis System
Exploding population, industrial effluents, and reckless deforestation have depleted natural sources of pure water. Dependence on erratic monsoons to replenish these sources has proved extremely inadequate & expensive. Good management of existing water resources and untapped sources, along with recovery and recycling of Industrial effluents & municipal waste water, seem absolutely essential for the future of mankind. 

Conventional Methods
Forced by the demand for more and better quality water, conventional methods of Water Treatment are becoming more expensive and inefficient, more so if the input water is brackish. 

Ultra Safe Solution
Numatik introduces the most reliable and economical alternative Ultra Safe Reverse Osmosis System in technical tie-up with renowned manufacturers of Reverse Osmosis system in the world. 

Principle of Reverse Osmosis 
Reverse Osmosis system uses semi-permeable spiral wound membrane to separate and remove dissolved solids, organics, pyrogens, submicron colloidal matter and bacteria from water. Feed water is delivered under high pressure through permeators, where water permeates through the minute pores of the membrane and is delivered as purified product water.

Removal of Impurities
Impurities in the water are concentrated in the reject stream and flushed to drain. 

Output Range
The system is available in a wide range of models for treating water quality of varying Total Dissolved Solids (TDS) with different flow rates. 

Purity Standards Maintained 
Maximum purity is attained by reducing

a) 95% - 99% of the TDS
b) 99% of the organics (including pyrogens) and bacteria. 

Advantages

• Hygienic drinking water for domestic use.
• Reduces the cost of de-ionized water for boiler-feed and process.
• Ultra pure water for Electronic Industries.
• To meet specific requirements in process industries
• Cooling Tower blow down water recovery.
• To remove fluorides from water, thus controlling fluorosis (a crippling disease).
• Conversion of brackish/sea water into potable water.

Useful for Industries such as Food, Beverages, Pharmaceutical, 
Micro-Electronic, Aquaculture, Hospitals, Hotels, Mineral Water etc.

MIXED BED PLANT  

Mixed bed demineralizer plant embodies a single column unit in which strong cation & strong anion resins are intimately mixed together. Water passing through the column comes repeatedly in contact with these resins and is thus in effect subjected almost infinite number of demineralizing stages. Demineral water of extreme purity is produced - Purity that can not be produced by any other commercial method.
 Mixed bed resins are regenerated with acid and alkali but the ion exchange resin must be separated before this can be done.

1.1 Quality of water 
A typical quality of mixed bed treated water is as follows 
Conductivity at 25OC   <1 micro siemens /cm
Silica max                      0.05 ppm as CaCO3
Total electrolyte             < 0.5. mg/ litre 
Total hardness                Nil
pH                                  6.8 ---7.2

Feed water Quality 
Raw water or feed water to Mix bed must be free from turbidity & organic matter, Heavy metals, free chlorine and oil.  The minimum inlet pressure required is 2 kg /cm2. If raw water is being directly fed as feed water to mixed bed then the raw water TDS should not be more than 50 ppm.

We offer a comprehensive range of spares for water treatment plants that is procured from reliable manufacturers. These are in conformance with industrial standards and are tested for quality before being supplied to our clients. Our entire range of Spares for Water Treatment Plants is used for purifying purposes. The quality range includes FRP Vessel, Multiport Valve and Filter Media like Sand & Carbon. These are known for durability and longer service ability.

MULTIPORT VALVES

VARIOUS SIZES

 20 NB, 25 NB, 40 NB, & 50 NB VALVES ( FLOW RATES UP TO 10,000 LPH ) ARE AVAILABLE  EX - STOCK

Vessel

• FRP VESSELS ( VARIOUS SIZES UP TO 1000 LTRS ARE AVAILABLE EX - STOCK  ) 
• MULTIPORT VALVES,
• ION EXCHANGE RESINS 
• FILTER MEDIA
• ACTIVATED CARBON,
• CONDUCTIVITY / TDS METERS ETC

Water treatment plants are designed based on latest coast effective ion exchange technique of counter current regeneration. The units consist of corrosion free pressure vessels internally connected in series. The column containing Caption absorbing exchanger and other column charged with an anion absorbing exchanger. The water flow through the bed of a Cation exchanger then the bed of an anion exchanger. Thus the systems remove dissolved chemical impurity and salts from water to a specified degree.

After using total exchange capacity of systems Cation and anion regeneration must be carried out. The Cation exchanger is regenerated with an acid and anion exchange resin is regenerated with an alkali solution. These Demineralize offer a practical range of capacities and flow rates necessary to serve wide variety of applications.

Specification of Water Softening Plant

We design and manufacture very efficient water softeners that are effective in reducing the hardness of the water. They help in producing zero  hardness soft water by highly acidic cation exchanger, which removes calcium and magnesium ions from the water. We design a series of softeners that have counter current regeneration with up flow rate and co-current regeneration with down flow rate. These are capable of operating for longer periods at low costs and are suitable for medium scale industries and other commercial industries. 

Application

• Boiler & Cooling water feed.
• Process water for chemical & textile.
• Hospital/Hostels/Homes/Commercial & institutional waterpower plants/Ice plant

We are offering our clients with RO Plant, R.O. Membranes, which are precision engineered keeping in mind the client’s requirements. Our range of RO Plant and R.O. Membranes is extensively used in standard and difficult custom system applications across the world for reverse osmosis system. These are provided to our clients in customized specifications at highly competitive prices. We offer this range of product in various types such as GE osmotic R.O. Membrane 4040 and 8040.