REVERSE OSMOSIS PLANT

Project Description

RO Plant Description:

A reverse osmosis plant is a manufacturing plant, where water is purified and desalinated by forcing water through a membrane, typically known as a reverse osmosis process. Water produced by plant RO may be used for several purposes like desalination, wastewater treatment, and the reclamation of dissolved minerals.

An average drinking water RO plant system requires six KW hours of electricity to desalinate one cubic meter of water. Reverse osmosis water plants requires a variety of pre-treatment techniques including softening, DE chlorination, and anti-scale treatment. Following pre-treatment, high levels of pressure send water through a semi-permeable membrane, which holds all contaminants except water.

Working Principle of Reverse Osmosis Plants:

RO Plant or Reverse Osmosis Systems is working by using a high-pressure pump to increase the pressure on the salt side of the RO and force the water across the semipermeable RO membrane, leaving almost all of the dissolved salts left in the reject stream. This concludes the ro plant working principle.

Reverse Osmosis Plant

RO System Design:

We are an established manufacturer of reverse osmosis plants. And, To enhance the efficiency and life of the Reverse Osmosis plant, effective pretreatment of the feed water is required. Selection of the right pretreatment will maximize efficiency and membrane life by reducing:

  • Fouling
  • Scaling
  • Membrane Degradation

RO plant design is consisting of:

Determining pretreatment requirement of Reverse Osmosis Plant:

If the feed water has traces of heavy metals, it is highly recommended to dose some chlorine to change the dissolved heavy metals to physical form, the media filter will filter most of it in a ro water purifier plant.

Reverse Osmosis Plant Selection of membrane:

Membrane elements are an important part of RO plants. The proteins (mostly polyamide) that makeup membrane elements vary depending on the ending clarity and intake water seawater or brackish water etc.

Reverse Osmosis System Configuration:

The conventionally following configuration is applied for the effective working of RO plant:

  • Pre-Chlorination Dosing System
  • Raw Water Storage Tank
  •  Feed Water Pump
  •  Multi-Layer or Media Filter
  • Activated Carbon Filter
  • Automatic Water Softener
  • Antiscalant Chemical Dosing System
  • Product Water Storage Tank
  • Post-Chlorination Dosing System
  • Product Water Pump (Re-pressurization)
  • Product Water UV Sterilize
RO Plants

Advantages of RO Plant

  • Better tasting water and food
    RO has the ability to remove 95 to 99% of total dissolved solids (TDS) in drinking water and improve the odor, appearance, and overall taste of water.
  • Health benefits
    Reverse Osmosis (RO) water filtration has proven to be most effective when it comes to removing impurities from water in an efficient and cost-effective manner.
  • Simple maintenance
    While some water filtration and purification systems are difficult to manage and time-consuming to maintain, RO systems are quite easy.

Industrial Applications of Water Purifying Plants:

Weak Caustic lye, around 5-6 Be (40 - 50 gpl), is collected in a storage tank from the impregnation and washing chamber. The suspended particles, fluff, and other debris are then filtered in a filtration unit. The feed to CRP then runs through a series of preheaters, which use flash vapour from the condensate flashes to preheat the wash liquor, resulting in little steam loss while heating the wash liquor to its boiling point. The liquor in the tubes comes into touch with the steam in heater 1's shell side and begins to boil. The vapour liquor combination enters the flash vessel via a tangential entry, where the vapors separate and enter the 2nd stage shell.

The lower pressure developed with the help of a water ring vacuum pump causes the boiling in the successive effect. The boiling point of the liquor is reduced as a result of the decreasing pressure, and it begins to boil. Due to the pressure differential, the concentrated liquor enters the second heater and comes into indirect touch with the produced vapour, and the process is repeated. A product pump removes the concentrated product from the last step. This is then either stored or purified using a Concentrated Lye purification technique.

The vapour generated at the final stage of the caustic recovery system / caustic soda recovery plant must be condensed. Either hot water or an adiabatic evaporator system is used to accomplish this. Water at room temperature is passed through tubes of an exchanger in a hot water system, where it becomes hot due to vapour. Because this hot water is uncontaminated, it can be safely used in the process or boiler as needed.

The effluent is transported through the exchanger and sprayed in an Adiabatic Evaporator in some circumstances where the hot water created cannot be properly used. Waste heat is lost in the form of vapour, resulting in lower effective steam usage. Also gone is the annoyance of too much hot water.

How RO Plant has replaced DEMINERALISATION PLANTS, DM PLANTS (RESIN BASED):

DM water can be produced by multiple stages of passage through ion exchange resins and zeolites till there is virtually nothing other than water left. This purified water may be used for boiler feed water in power stations but not for drinking but is a very expensive process for town water supplies.

RO water is produced by a single pass of filtered water through an RO membrane. Due to leaks and slight imperfections, the membranes can contain up to about 1500 parts per million (0.15%) of assorted dissolved substances. That would be acceptable for drinking. RO plant requires power to run pressure pumps and fairly frequent replacement of membranes so is expensive but not as expensive as distillation or the full DM process. Moreover, as reverse osmosis plant exporters, we are proud of the high quality, robust design, long lifespan, fracture toughness, and damage tolerance of our products. The reverse osmosis water purification plant price depends on the requirement of clients, and the where it will be used. Also, as suppliers, we make sure that our customers receive items that meet their expectations and uphold the highest standards of quality.

RO Recovery:

RO recovery rate is influenced by the quality of the feed. The contaminants are generally inorganic salts and organics which

  •  raise the Osmotic Pressure
  •  foul the system’s membrane

The fewer TDS you have, the less applied pressure is required in order to push the water through the pores of the RO membranes. That is the reason BWRO can achieve up to 70-97% recovery (especially with new system configurations) and SWRO is limited to 35-45%.

SEAWATER DESALINATION WITH REVERSE OSMOSIS PLANT:

All Reverse Osmosis plants are basically Desalination Plants but desalination is being referred to sea water normally. As sea water has very high TDS requires very high pressure to force sea water through membranes which are different then brackish water membranes.

Multiple Effect Distillation (MED) for seawater by Multi Effect Evaporator Manufacturer:

As sea water desalination plants by multi effect evaporator manufacturer requires very high pressure pumps in short energy consumption is very high in sea water reverse osmosis systems forced to research for alternative of reverse osmosis plants for seawater desalination found Multiple Effect Distillation very cost effective in terms of energy consumption but fixed capital investment is bit higher. In many cases Multiple Effect Distillation(MED) would be associated with Thermal Vapour Compression ( MED TVC), or Mechanical Vapour Compression (MED MVC). And, Waterman Engineers Australia reverse osmosis plant price is the most competitive in the industry.

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