PSA Oxygen Generator Water Treatment: Improving Oxygen Supply for Water Systems

Many modern water-treatment methods involve the use of oxygen. It can aid in oxidation, dissolved oxygen augmentation, biological treatment, and water quality management. But there can be storage and handling problems with transporting cylinders or liquid oxygen. One method of doing this is to use a PSA oxygen generator water treatment system, which generates concentrated oxygen onsite from air.

What is PSA Oxygen Generator?

The PSA oxygen generator is a technology-based PSA that separates oxygen from the compressed air. Molecular sieve material selectively adsorbs the N, and the O-rich gas flows through it. There are two adsorption vessels which perform production and regeneration cycles alternately.

Continuous oxygen generation is possible with this process if the size and maintenance of the system are correct. Typically, Puroxi’s Oxygen Generator can generate about 90-95% Oxygen concentration depending on the model and the operating conditions.

In appropriate applications, PSA oxygen generator water treatment can offer an oxygen source that is not solely reliant upon delivered oxygen.

How Does PSA Oxygen Generation Work?

The process involves several steps:

• Ambient air enters the system.
• Air is compressed and filtered.
• Molecular sieves separate nitrogen from oxygen.
• Oxygen-rich gas is collected and regulated.
• The adsorption vessels alternate during regeneration.
• Concentrated oxygen moves toward the connected treatment system.

The PSA oxygen generator, therefore, can offer a continuous supply of oxygen when the generator, compressor, controls and equipment downstream are properly designed.

Benefits of On-Site Oxygen Generation

Oxygen supply may be advantageous to installations that use oxygen on a regular basis. PSA oxygen generator water treatment systems can help to minimize the need for delivered oxygen and ease oxygen storage requirements.

Potential advantages include:

• Continuous on-site oxygen production
• Reduced Cylinder Handling
• Scalable oxygen supply
• Automated operation
• Less dependence on delivered oxygen
• Suitable integration with properly designed water-treatment systems

Puroxi notes that on-site generation can be useful where oxygen is required regularly and the complete system is appropriately engineered.

Install Onsite PSA Oxygen Generation for Water Treatment Facility

Prior to installing onsite PSA oxygen generation for water treatment facility, evaluating oxygen demand, water volume, flow, existing equipment and treatment goals. The oxygen demand can differ greatly among wastewater, aquaculture, industrial process water and other uses.

A good assessment should contain:

• Required oxygen concentration
• Peak and average oxygen demand
• Water flow and turnover
• Existing pumps and piping
• Operating pressure
• Water chemistry
• Ambient temperature and installation conditions
• Required monitoring and controls

This evaluation can ensure that the oxygen generator for water treatment is synchronized with the whole treatment process.

Oxygen Transfer With Nano-Bubble Technology

The generation of oxygen is just one segment of the treatment process. Also, oxygen must efficiently transfer to the water. Puroxi Nano Bubble Nozzles can add oxygen to a high-pressure water flow, generating very small bubbles that have a large gas-to-water surface area.

With proper engineering, the use of PSA oxygen generation systems with nanobubble technology can form a dedicated oxygenation pathway.

The system can be represented as:

Ambient Air → PSA Oxygen Generator → Oxygen Line → Nano Bubble Nozzle → Water

With this method, the water treatment system of a PSA oxygen generator can be used in some cases where controlled oxygen delivery is required.

Applications for Water Treatment

An oxygen generator for water treatment can be used to benefit a number of applications if site conditions call for oxygenation or oxidation.

Potential applications include:

• Wastewater treatment

• Aquaculture and fish farming
• Lakes, ponds, and reservoirs
• Industrial process water
• Irrigation water
• Odor-management systems
• Dissolved-oxygen improvement
• Biological treatment support

Puroxi identifies certain water sources, such as wastewater, aquaculture, lakes, ponds, reservoirs, irrigation and industrial process water, as potential applications for its Oxygen Generator.

Install Onsite PSA Oxygen Generation for Water Treatment Facility Safely

If PSA oxygen generation is installed onsite for a water treatment facility, safety should be a major consideration. Bottled oxygen can create combustion hazards. So, equipment must be kept away from incompatible items, oils, grease, sparks, and flames.

Puroxi advises choosing an installation environment that is clean, dry, ventilated and temperature suitable. Use oxygen-compatible tubing, oxygen-compatible valves, fittings and downstream components as well. Proper personnel should follow the electrical, pressure system, fire safety and occupational codes that apply.

Choosing the Best Oxygen Generator

There are more factors to consider when selecting an oxygen generator for water treatment than just water volume. Oxygen demand, target dissolved oxygen, temperature, salinity, chemistry, circulation, pump flow, pressure, and treatment objectives can affect system design.

Puroxi takes these factors into consideration when recommending an appropriate configuration. This method, which is site-specific, can prevent the selection of equipment based on assumptions.

A full engineering review may also be performed to help plan the capacity of the generators, compressor needs, piping, controls, and oxygen transfers for facilities considering onsite PSA oxygen generation for water treatment facilities.

Puroxi Technologies for Oxygen-Based Treatment

Puroxi has technologies that could be combined in appropriate water-treatment applications.

• Puroxi Oxygen Generator

The PSA oxygen generator is a process that generates concentrated oxygen in the ambient air. It is intended to work with appropriate Puroxi water-treatment systems and can be used to supply oxygen continuously.

• Puroxi Nano Bubble Nozzles

These nozzles inject oxygen into a high-pressure water stream. The type they are selected depends on flow, pressure, gas delivery and application requirements.

• Puroxi Oxygen Booster

The Puroxi Oxygen Booster is a stand-alone controlled-dosing technology. It is used for water testing and application-specific design of the water treatment.

Together, these technologies demonstrate why PSA oxygen generator water treatment should be designed around the water and process rather than treated as a one-size-fits-all solution.

For customized oxygen-generation and water-treatment solutions, contact Puroxi today.