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Pressure Filters »

Filtration is commonly the mechanical or physical operation which is used for the separation of solids from fluids (liquids or gases) by interposing a medium through which only the fluid can pass. Oversize solids in the fluid are retained, but the separation is not complete; solids will be contaminated with some fluid and filtrate will contain fine particles (depending on the pore size and filter thickness).

Filtration is also used to describe some biological processes, especially in water treatment and sewage treatment in which undesirable constituents are removed by absorption into a biological film grown on or in the filter medium as in slow sand filtration.to greatly reduce the amount of waste water produced from normal backwash operations.





Granular Activated Carbon Contactors »

Carbon column absorption is commonly used for the tertiary treatment of municipal and industrial wastewater. GAC is mainly used to adsorb small quantities of colour and odour due to soluble organics.

Activated Carbon adsorption occurs to the internal walls of pores in carbon particles produced by thermal activation. Activated Carbon has multiple usage and specialty carbon are used for various specific usage.




Softening »

We offer custom-built water softeners for small commercial units to large industrial applications. Our softeners are equipped with premium grades of Ion Exchange resin to ensure a trouble free operation for a long period.



Ultrafiltration »

UF membrane systems use advanced hollow fiber membranes technologies operated in the outside-in or inside-out direction of flow. UF being a physical barrier of 0.02 µ ranges ensure complete removal of almost all kind of suspended impurities including bacteria and viruses (log 6 and log 4 removal respectively) and thus find its major application in producing the potable water, in effluent or sewage recycle systems as standalone system or as pre-treatment to reverse osmosis system.

UF systems can be operated either in dead end mode or cross flow mode. Membranes can be backwashed on a regular interval to remove foulants on the membrane surface. Chemicals are also used to ensure complete removal of these foulants almost on regular basis. Backwash feature and low pressure filtration makes them practically viable for various applications to fight with water scarcity.

Since the membrane pore sizes is very small and falls in 0.02 µ range, fouling due to deposition of organic and inorganic compounds on the membrane may occur if the system is not properly designed and operated. Therefore, automated backwashing and chemical flushing processes are utilised to maintain the rate of membrane fouling within acceptable limits.

Chemical cleaning is also employed on a regular interval once a maximum trans-membrane pressure has been reached. Typical cleaning agents utilized are Acid, Caustic and Hypo solutions.

Some speciality chemicals are also employed sometimes for much effective cleaning.UF systems are low pressure membrane systems and typically remove suspended and colloidal impurities from the waste water while passing all dissolved material.


Common Applications
  • Drinking water filtration
  • Sewage / Industrial Wastewater Recovery
  • RO Pre-treatment

Reverse Osmosis »

Reverse osmosis (RO) purifies water using semipermeable membrane. Though the pore of RO membranes are 0.0001µ which is of the smallest pore size available currently, however, this membrane-technology is not a filtration technology. In RO, an applied pressure is used to overcome osmotic pressure. RO can remove many types of molecules and ions from solutions and is used in both industrial processes and in producing potable water.

The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. To be "selective," this membrane should not allow large molecules or ions through the pores (holes), but should allow smaller components of the solution (such as the solvent) to pass freely.

In the normal osmosis process, the solvent naturally moves from an area of low solute concentration, through a membrane, to an area of high solute concentration. In reverse osmosis, the movement of solvent is reversed by applying an external pressure to reverse the natural flow of pure solvent.

The process is similar to other membrane technology applications. However, there are key differences between reverse osmosis and filtration The predominant particle removal mechanism in membrane filtration is due to physical barrier, so the process can theoretically achieve perfect removal of particles.

The filtration is not dependent on operational parameters such as influent pressure and concentration while reverse osmosis involves a diffusive mechanism so that separation efficiency is dependent on solute concentration, pressure, and water flux rate. Reverse osmosis is most commonly known for its use in drinking water purification from brackish water, seawater. It also removes the salt from water effluent and makes it suitable for various process usages.


Common Applications
  • Surface Water Treatment
  • Industrial Process Separations
  • Boiler Feed Water
  • Cooling Tower Makeup
  • IIndustrial Wastewater Treatment
  • Municipal Drinking Water
  • High Purity Pre-treatment

Membrane Bioreactor Systems »

Membrane bioreactors (MBR) are the next innovation of waste water treatment processes where combination of activated sludge process and Membrane technology utilised to produce high quality water which is fit for many low end usages.

Activated sludge treatment has the disadvantage of using sedimentation in the secondary clarifier to separate the biomass from the purified waste water. In MBR, secondary purification is replaced by a highly efficient and reliable membrane based biomass separation process requiring a much smaller footprint.

Ultrafiltration membrane with unsurpassed separating capacity and flow performance, the membrane module offers an efficient, reliable, cost effective and future oriented solution with a significantly higher purification rate and a solid-free discharge, which can be perfectly recycled either for low end usages or as feed flow in process water preparation.

Since the MBR process uses Ultrafiltration membranes for bio mass removal, hence, an extremely high effluent quality is ensured, which also meets hygienic requirements.



Swimming Pools »

We provide complete solutions for swimming pool requirements


Equipments
  • Filters
  • Pumps
  • Basin Fittings : Inlet, Drain, Vacuum Points
  • Underwater Lights : Halogen, LED
  • Pool Surrounding Equipment : Ladders & Gratings
  • Maintenance Equipments : Suction Sweeper, Hose, Handle, Leefnet,    Brushes, pH &Chlorine Test Kit
  • Pool Heating Equipment : Heat Chill Pump, Inline Heater, Solar System
  • Pool Covers : Isothermals
  • Automatic Pool Cleaners
  • Disinfection System : Dosing Pumps, UV Systems, Ozonaters

SPA »

  • Steam
  • Sona
  • Jacuzzi
  • Whirlpool
  • Chill Shower


Ready Made Pools »

  • GRP tile finish pools
  • Galvanised panel
  • PVC lining Pools
  • Stainless Steel Pools


Fountains »

  • Cascade Jets,
  • Foam Jets
  • Clear Jets
  • Tulip Jets
  • Interactive Water Features, Laminar, Choreoswitches
  • Fire Systems (water with fire, fire only)
  • CHEMICAL Treatment

Adurna
B-607, Naveen,Plot 13, Sector 5,
Dwarka,New Delhi -110075

 

+91 11 45701387
+91 99103 09389
info@adurna.in

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