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Plant

Prominent & Leading Manufacturer from Noida, we offer RO Plant, DM Plant and Electrochlorination Plant.

RO Plant
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RO Plant

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The liquid has tendency to flow from low concentration to high concentration through a semi permeable membrane, in the Osmosis Process. In reverse osmosis the direction of flow is reversed by increasing the pressure at high concentration liquid side than the low concentration side, which results in the reversed flow of the liquid from high concentration to low concentration, through a semi permeable membrane, leaving behind dissolved minerals.

The above semi permeable membrane for reverse osmosis application consists of a polymeric material, which is several thousand Angstroms thick, thin film.

There are two major groups of polymeric materials, which can be used to produce satisfactory reverse osmosis membranes: cellulose acetate (CA) and polyamide (PA). The performance of membrane elements in reverse osmosis systems is affected by the feed water composition, temperature, pressure and permeate recovery ratio.

The feed water, depending on its source, may contain suspended solids and dissolved matter, in varying concentrations. Suspended solids may consist of inorganic particles, colloids and biological debris such as microorganisms and algae. Dissolved matter may consist of highly soluble salts, such as chlorides, and sparingly soluble salts, such as carbonates, sulfates, sulfates, and silica. During the RO process, suspended particales may settle on the membrane surface, thus blocking feed channels and increasing friction losses (pressure drop across the system Sparingly soluble salts may also precipitate from the concentrate stream, create scale on the membrane surface, and result in lower water permeability trough the RO membranes. Threrefore, the feed water pretreatment, to improve its quality to the level, which would result in reliable operation of the RO membranes is must. The common indicators of suspended particles used in the RO industry are turbidity and Silt Density Index (SDI) The maximum limits for turbidity are 1 NTU and SDI of 4. In the continuous operation of an RO system with feed water, the average values of turbidly and SDI in the feed water should not exceed 0.5 NTU and 2.5 SDI units, respectively. The indicators of saturation levels of sparingly soluble salts in the concentrate stream are the Langley Saturation Index (LSI) and saturation rations. Negative values of LSI indicate the possibility of calcium carbonate precipitation. The saturation ratio is the ratio of the product of the actual concentration of the ions in the concentrate stream to the theoretical solubilitys of the salts at a give conditions of temperature and ionic strength. These ratios are applicable mainly to sparingly soluble sulfates of calcium, Barium and Strontium. Silica could also be a potential scale forming constituent.

Advantages

• The most economical &efficient method of dissolved solids removal.
• Easy to startup and uses very little space on solids in feed water.
• Can handle fluctuations of total dissolved solids removal.
• Easy availability of spares and service.
• Short delivery periods.

Applications

• Hygienic drinking water hotels ,restaurants, hospitals and residences.
• Mineral water plants.
• High purity water for hospital for use in dialysis units.
• As a retrofit to demineralisations plants in industries to reduc regeneration chemicals.

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DM Plant
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DM Plant

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A Typical two-bed DM Plant consists of two MS Rubber lined Pressure vessels connected in series along with its internal fittings. The first unit consists of high capacity strongly acidic cation exchange resin, which converts positive ions of salt and replaces them with hydrogen ions to form respective acids, which are absorbed in next vessel by strongly basic anion exchange resin. The water obtained by this process shows conductivity less than 20 µ S / cm at 25 Deg C and total dissolved solids less than 10 ppm. Further high purity water can be achieved by Mixed Bed Deionisers, which are designed to produce high purity treated water. They can be used as polishing units after two bed DM Plant to obtain high purity water. Mixed Bed Deionisers are single column units, filled with strongly acidic cation and strongly basic anion exchange resins mixed together.

There are four distinct stages in the operation of Deionisers

• Service
• Backwashing
• Regeneration
• Rinse/Remix

Service
In the Service cycle the water enters the vessel and passes through the Resin bed of the respective exchanger.

Backwashing
After the resins are exhausted, the bed is backwashed. Backwashing is carried out by a uniform upward flow of water through the resin bed. The backwash step expands the resin bed releasing any entrapped particulate matter & removes the channeling in the resin column if occurred during the service cycle.

Regenration
When the ion exchange resins loose all the exchangeable ions, they require regeneration to restore them back to hydrogen or hydroxyl form depending upon whether they are cation or anion resins. To achieve this 4 - 5% concentrated solution of Hydrochloric acid is used for cation resin and a 4% - 5% concentrated solution of caustic soda for anion resin.

Rince/Exchange
The final stage of regeneration is to rinse the resins of excess regenerant.

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Electrochlorination Plant
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The processes involved in electrochlorination are actually rather simple. The main idea involved is the desalination of water to produce a chlorinated solution. This happens when saltwater is inserted into electrolyzer cells. The first step is removing the solid excess from the saltwater. Next, as the saltwater runs it is streamed through a channel of decreasing thickness. One side of the channel is  cathode, the other is an anode. As the water flows through the anode/cathode channel, a low voltage DC currents applied. When this happens, the electrolysis is triggered and sodium hypochloride is instantly produced as well as hydrogen gas (H2). The hydrogen rich sodium hypochlorite then travels to a tank that removes the hydrogen gas. The dehydrogenization mechanism varies from device to device but the process is generally the same. After hydrogen has been removed from the solution, it is stored in a tank as the finished product.No chemicals other than ordinary salt, or sodium chloride (NaCl), are used throughout the entirety of the process. Although the actual chemical processes involved are complex, they can be simply represented by the following equation:
NaCl + H2O + ENERGY → NaOCl + H2
In words this reads, energy is added to sodium chloride (table salt) in water, resulting in sodium hypochlorite and hydrogen gas.

Products
The product of this process, sodium hypochlorite, contains 0.7% to 1% chlorine. Anything below the concentration of 1% chlorine is considered a non-hazardous chemical although still a very effective disinfectant. In addition, the sodium hypochlorite produced is in the range of 6-7.5. This means that the chemical is relatively neutral in regards to acidity or baseness. Also, at that  pHRage, the sodium hypochlorite is extremely stable and the electrochlorination extremely effective.

Applications

Disinfection

  • Drinking Water
  • Food and Beverage
  • Waste Water Treatment
  • Recreational Water
  • Hospitals
  • Hotels
  • General Sanitation

  • Bio Fouling Control & Algae Prevention

  • Ballast Water
  • Sea Water Intake
  • Fire Water
  • Desalination
  • Off Shore Oil Platforms
  • Cooling Water
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