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Containerised Reverse Osmosis Water Treatment Plant

Containerised Reverse Osmosis Water Treatment Plant

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Description

Packaged RO Plant with Pre-Treatment

All of our RO systems can be combined with the UF membrane pre-filtration to form a single-frame UF-RO system.

UF-RO systems have proven to work unattended and trouble-free in the most challenging conditions, meeting the permeate quality requirements of various applications where simple reverse osmosis and other filtration processes (Multimedia, GAC, and micron sediment filtration) required expensive and time-consuming maintenance.

The UF capabilities to eliminate microbiological contaminants reduce the risk of contaminant formation on the surface of RO membranes and ensure constant production of high-quality water to the client.

UF pre-filter extends the effective life and efficiency of the RO membranes, thus reducing the cost of operation.

Key features

  • Improved water quality
  • Low maintenance operation
  • Reduced operational costs
  • Space saving design
  • Quiet operation

Applications

High-production UF-RO systems are a reliable solution for efficient industries and agriculture.

Reverse osmosis (RO) is a filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane. 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.

That being said, it is vital to the preservation of the quality of your reverse osmosis membrane to pre-treat any materials that could harm reduce the effectiveness of the membrane itself. These materials may simply cause damage over time, or some may destroy a membrane outright.

Reverse Osmosis

Reverse Osmosis is most commonly known for its use in drinking water purification from seawater, removing the salt and other substances from the water molecules. This is the reverse of the normal osmosis process, in which the solvent naturally moves from an area of low solute concentration, through a membrane, to an area of high solute concentration. The movement of a pure solvent to equalize solute concentrations on each side of a membrane generates a pressure and this is the “osmotic pressure.” Applying an external pressure to reverse the natural flow of pure solvent, thus, is reverse osmosis.

The process is similar to membrane filtration. However, there are key differences between reverse osmosis and filtration. The predominant removal mechanism in membrane filtration is straining, or size exclusion, so the process can theoretically achieve perfect exclusion of particles regardless of operational parameters such as influent pressure and concentration. Reverse osmosis, however involves a diffusive mechanism so that separation efficiency is dependent on solute concentration, pressure and water flux rate.

Pre-treatment

Pre-treatment is important when working with RO and Nanofiltration (NF) membranes due to the nature of their spiral wound design. The material is engineered in such a fashion as to allow only one-way flow through the system. As such, the spiral wound design does not allow for back pulsing with water or air agitation to scour its surface and remove solids. Since accumulated material cannot be removed from the membrane surface systems, they are highly susceptible to fouling (loss of production capacity). Therefore, pre-treatment is a necessity for any RO or NF system.

Pre-treatment in SWRO systems has four major components:

  • Screening of solids: Solids within the water must be removed and the water treated to prevent fouling of the membranes by fine particle or biological growth, and reduce the risk of damage to high-pressure pump components.
  • Cartridge filtration: Generally, string-wound polypropylene filters are used to remove particles between 3 – 5 microns.
  • Dosing: Oxidizing biocides, such as chlorine, are added to kill bacteria, followed by bisulfide dosing to deactivate the chlorine, which can destroy a thin-film composite membrane. There are also bio-fouling inhibitors, which do not kill bacteria, but simply prevent them from growing slime on the membrane surface.
  • Pre-Filtration pH adjustment: If the pH, hardness and the alkalinity in the feed water result in a scaling tendency when they are concentrated in the reject stream, acid is dosed to maintain carbonates in their soluble carbonic acid form.

CO3-2  H3O = HCO3– H2O
HCO3– H3O = H2CO3  H2O

  • Carbonic acid cannot combine with calcium to form calcium carbonate scale. Calcium carbonate scaling tendency is estimated using the Langelier saturation index. Adding too much sulphuric acid to control carbonate scales may result in calcium sulphate, barium sulphate or strontium sulphate scale formation on the RO membrane.
  • Pre-filtration antiscalants: Scale inhibitors (also known as anti-scalants) prevent formation of all scales compared to acid, which can only prevent formation of calcium carbonate and calcium phosphate scales. In addition to inhibiting carbonate and phosphate scales, antiscalants inhibit sulphate and fluoride scales, disperse colloids and metal oxides, and specialty products can be to inhibit silica formation.

Aqua Filtration offers a wide range of pre-treatment such as:

  • Multi Media Filters
  • Ozonation Systems
  • Chemical dosing Systems
  • Pre UV Sterilizers
  • Automatic Water Softeners
  • Activated Carbon Filters
  • Ultrafiltration
  • Iron Removal Filters

 

Containerised Water Purification Plant

The stand-alone drinking water production at any spot in the world, no matter what is the quality of the incoming water. With 13 consecutive purification stages, this mobile solution represents all the processes performed at a drinking water plant, providing safe, soft, and healthy to drink water.

Any source of water
Fast production of clean drinking water from wells, open sources like lakes, rivers, ponds, and brackish water.

Instant deployment
13 stages of water treatment technologies are packed in the size of a standard 20 ft container that can be mounted as far as 20 meters high, 100 meters away from any available water source and launched immediately.

Over 10 years of operation
Robust and tamper-proof self-sufficient construction of the container protects the high-end equipment against the weather and other threats. It is ideal as a temporary or permanent solution for drinking or tap water supply.

Requires minimal maintenance
User-friendly plug-and-play installation with minimized maintenance costs. Operated without professional support. It can be equipped with a solar panel and satellite connection. Remote control through encrypted internet traffic allows the monitoring of all system indicators from anywhere in the world.

NO NEED FOR THE ONSITE HIGHLY QUALIFIED PERSONNEL

Imagine the strength and purification power of a large-scale reverse osmosis plant. That power can now be at the fingertips of anyone anywhere in the world, and requiring only the space of a forty-foot container. Aqua Filtration CRO Series Containerized Reverse Osmosis System is a self-contained, turnkey system that can function on-the-go or as a permanent water treatment plant, able to start pumping high-quality product in less than a day after arrival on-site. Our containerized reverse osmosis systems are made to order, meaning your system will be specifically tailored to your water treatment requirements, containing all the amenities your reverse osmosis system could possibly need.

Containerized reverse osmosis systems are the future in membrane water treatment. Capable of producing up to one million litres of water per day from a single forty foot container, with built-in pre-treatment and membrane cleaning, containerized systems are redefining the standards of water treatment plants worldwide.

Take the advantages of an industrial reverse osmosis system – high rejection of metals, minerals, and chemical contaminants, a high recovery rate, and sturdy built-to-last design – and make it portable, able to be transported anywhere in the world where potable water may be necessary. All these features can be yours in addition to a collection of benefits unique to containerized systems.

Each of our CRO series containerized reverse osmosis systems starts with a water need – your need, and goes from there. Aqua Filtration, we work directly with our clients from the ground up, keeping them involved with the construction and design of their containerized system every step of the way. The end product they receive is a completely unique system tailored to their needs and specifications. Some of the special features that can be installed in a containerized system include insulation and centralized heating and cooling, keeping your industrial reverse osmosis system safe from even the harshest elements. A water purification plant can be available anywhere you can ship a twenty or forty-foot container.

Call Aqua Filtration today to see how a CRO series containerized reverse osmosis system can revolutionize the way you provide potable water.

Containerized water treatment plants have many advantages over built-in plant room installations and have a plethora of special options available:

  • Plug and play unit
  • Mobile: useful for construction sites
  • Small foot print
  • Centralized atmospheric controls available
  • Training and servicing guidelines included
  • Easy transportation
  • Limited civil work (only container foundation)
  • Reinforced diamond-plate flooring available
  • Self-contained pre-treatment and cleaning available
  • Quick installation
  • Turnkey delivery: piping, cables, air conditioning
  • Insulation and weather protection available
  • Overall less expensive than a permanent structure

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