PeroxEgen™ On-Site H₂O₂/PAA Water Treatment System

Highlights:

• Provides an on-site H₂O₂ source for water treatment and cleanser generation
  
• Is a turn-key, modular system that scales to meet application requirements
  
• Allows feeding of redialy available, GRAS feedstock to generator for PAA production
  
• Enables combining H₂O₂ with a UV or ozone system for advanced oxidation treatment capabilities

Problem Addressed
Chlorine gas is being replaced as the primary oxidizing biocide and oxidant in many industries. The hazards of handling and storing chlorine gas and concerns about the harmful effects of chlorinated organic byproducts to people and the environment is compelling the shift to a safer, more environmentally friendly alternative.

Hydrogen peroxide (H₂O₂) is a well-known oxidizing biocide and oxidant that is effective in many water treatment applications and is environmentally benign; only water and oxygen are byproducts. Using H₂O₂ in advanced oxidation processes that combine ultraviolet (UV), ozone or transition metal activation of H₂O₂ to form the very powerful,
but short-lived hydroxyl radical are increasingly used in many water treatment applications.

Combining hydrogen peroxide with a readily available, generally regarded as safe (GRAS) feedstock forms the very effective biocide and sanitizing mixture of parectici acid (PAA). Foods and surfaces treated with this mixture are effectively disinfected without producing or leaving any harmful residuals.

Current Approach
Most of the H₂O₂ produced today is made via the anthraquinone process (a two-step catalytic chemical process) at large-scale, centralized plants. H₂O₂ is then shipped to customers in concentrations ranging from 35-70%. Residual organics resulting from this manufacturing process are always present in anthraquinone produced H₂O₂. Also, phosphanate-based stabilizers are normally added to keep the H₂O₂ stable.

Eltron’s Strategy
Eltron has developed PeroxEgen™, a turn-key, mobile electrolytic technology that generates H₂O₂ — and optionally PAA — on-site for a variety of water treatment, advanced oxidation and cleansing applications. PeroxEgen requires only water, air, and electricity as consumables for water treatment and allows pH to be controlled for a variety of applications. PeroxEgen can be operated in flow-through mode for direct treatment at low H₂O₂ concentrations. Unlike bulk catalytic production methods, Eltron's electrolytic process operates over a wide temperature range.

Eltron's PeroxEgen technology provides a different method for H₂O₂ and PAA delivery at the point of use, eliminating distribution costs and the hazards associated with handling and storage. Water treatment costs, H₂O₂ and PAA concentrations and production rates are dictated by the particular application and process conditions. The advantages of PeroxEgen include:

• On-site, turn key operation
• Scalable
• Varying H₂O₂ and PAA concentrations
• Integrates with UV, ozone in advanced oxidation processes
• Lower materials, operation and maintenance costs
  
• Minimizes transport, handling, storage, hazards and regulatory compliance issues
  
• Green technology; no chemical or organic residuals
  
• Minimal carbon footprint relevant to transportation
  
• Only system utilities are water, air and electricity
  
• Operates at up to 60°C, pH 0-14