Indu Raj AssociatesWater engineering since 1986+91-9953289588Get an estimate
Reverse osmosis plant assembled and tested before dispatch

What we build, and what each system is for

Six kinds of water system, described in plain terms. Which one a site needs depends on what is in the water, what the water is for, how much space there is and who will run it. We test before we recommend.

Packaged sewage treatment plant landscaped into a residential campus
Packaged sewage treatment plant landscaped into a residential campus

1.5 KLD to 2 MLD

Sewage treatment

Waste water treated on site and returned for flushing, gardens and cooling.

Built above ground or below it. Where there is no plot to spare, the tanks go underground and the space above stays usable. Treated water is reused on site rather than discharged, which is usually where the plant pays for itself.

Where it is used

  • Residential and office campuses
  • Institutional and defence establishments
  • Hotels, clubs and hospitals
  • Townships and group housing
At a glance
Capacity1.5 KLD to 2 MLD
ConstructionRCC, modular, or underground FRP tanks
Treated water used forFlushing, horticulture, cooling make-up, washing
OperationAutomatic, with remote monitoring available

25 LPH to 100+ m³/day

Reverse osmosis

Hard, saline or high-TDS water made fit to drink or to run a process on.

Sized against a laboratory analysis of your water, never from a catalogue. The reject stream is recovered for flushing and gardens wherever the site allows it.

Where it is used

  • Campus and canteen drinking water
  • Process and boiler feed water
  • Borewell supplies high in salts
  • Pharmaceutical and food production
At a glance
Capacity25 LPH to 100+ m³/day
RemovesDissolved salts, hardness, nitrate, fluoride, heavy metals
Pre-treatmentFiltration, carbon and softening as the water requires
Reject waterRecovered for flushing and horticulture where possible
Commercial reverse osmosis plant with stainless pre-filtration
Commercial reverse osmosis plant with stainless pre-filtration
Puretron 50 LPH de-ionization water purifier, floor-standing cabinet
Puretron 50 LPH de-ionization water purifier, floor-standing cabinet

50 LPH to 16 KLD

Electronic purifiers

Drinking water that keeps its minerals and wastes far less than a standard plant.

Where the supply is only moderately salty, this recovers far more of the water than a conventional plant and leaves useful minerals in rather than stripping everything out. No membranes to replace and no dosing chemicals.

Where it is used

  • Offices and institutional buildings
  • Canteens and hostel messes
  • Sites under water recovery norms
  • Moderately salty municipal supplies
At a glance
Capacity50 LPH, 250 LPH, 500 LPH, and 6 to 16 KLD
Water recovered75 to 90 per cent of what goes in
Suited toSupplies up to 1,500 ppm dissolved solids
ConsumablesNo membranes, no dosing chemicals

Point of use to plant scale

Filtration and softening

Turbidity, iron, chlorine and hardness taken out before they cost you equipment.

Hard water scales pipework, chokes heat exchangers and quietly raises fuel bills. This is the least glamorous part of a water system and the part that most often decides what the rest of it costs to run.

Where it is used

  • Protecting boilers and cooling towers
  • Stored water in tanks and sumps
  • Iron staining from borewells
  • Pre-treatment ahead of other plant
At a glance
FiltrationTurbidity, suspended solids, iron and chlorine
SofteningHardness removed by ion exchange, regenerated automatically
DemineralisationFor process and boiler duty
VesselsFRP or steel, manual or automatic operation
FRP pressure vessels for filtration and softening duty
FRP pressure vessels for filtration and softening duty
Ultrafiltration membrane skid in service
Ultrafiltration membrane skid in service

Building to municipal scale

Disinfection

Water kept safe from the plant all the way to the tap, without stored chemicals.

Treatment protects the water at the plant. Disinfection keeps it protected through the tanks and the pipework, which is where most contamination actually happens. Systems are available that need no chemical deliveries at all.

Where it is used

  • Campus drinking water networks
  • Stored water in tanks and reservoirs
  • Sites that cannot store chlorine
  • Existing systems needing a retrofit
At a glance
MethodsUltraviolet, ultrafiltration, and inline electrochemical
ProtectionCarried through storage and the distribution network
Chemical-free optionsNo chlorine gas, hypochlorite or salt stored on site
FittingRetrofits into existing pipework

Single pump to full plant room

Pumping and boosting

Pressure where it is needed, from the pump room to the top floor.

Pumps, motors, boosting sets and the electrical work that drives them, plus the swimming pool systems most contractors hand to someone else.

Where it is used

  • Hydro-pneumatic boosting systems
  • Pump rooms and motor control
  • Swimming pool circulation
  • Water supply and drainage networks
At a glance
BoostingHydro-pneumatic systems sized to the building
Pump roomsPumps, motors, panels and pipework
Swimming poolsCirculation, filtration and maintenance
ElectricalMotor control and starter panels, tested before handover
Treatment plant room with pumping, dosing and control equipment
Treatment plant room with pumping, dosing and control equipment

Choosing

How the right system gets chosen

Start with the water

A laboratory analysis decides the technology. Anything specified before that test is guesswork.

Then the end use

Drinking water, boiler feed, cooling and flushing are four different specifications. Over-treating costs money forever.

Then space and load

Footprint and access decide what can be built. Peak demand decides whether it will hold up.

Then who runs it

We match the system to the attention it will realistically get after handover.

Treatment plant room with dosing, filtration and control equipment

Send us a water analysis and we will size the system.

If you do not have one, we will arrange the test. Either way you get a written recommendation with the system, the capacity and the reasoning behind it.