Pulse Electric Field Side-Stream Water Processor for Legionella & Algae Control and Corrosion Passivation in Cooling Towers

• High-Efficiency Bypass Logic Achieves comprehensive water quality control by treating only 2%–5% of the total system flow.
• Pulse Electric Field Technology Utilizes overlaid pulse low-voltage electric fields to physically alter water molecular structures without chemicals.
• Legionella & Algae Control Effectively eradicates harmful bacteria, including Legionella, and suppresses algae growth through advanced oxidative species.
• Corrosion Passivation Promotes the formation of a dense Fe₃O₄ protective film on pipe walls to prevent electrochemical corrosion.
• Suspended Solids Removal Integrated filtration and automatic blowdown system significantly reduce water turbidity.

In modern industrial cooling and HVAC systems, maintaining water quality is paramount to system longevity and thermal efficiency. The ArkFlow Side-Stream Water Processor represents the next generation of water treatment technology, evolving from traditional full-flow systems. Designed specifically for bypass installation, this unit effectively manages scaling, corrosion, and biological fouling by processing a small fraction (2%–5%) of the circulating water, making it an ideal choice for large-scale systems where full-flow treatment is impractical or energy-intensive.

The ArkFlow system operates on the principle of a superimposed pulse low-voltage electric field. When water passes through the treatment chamber, the electrical energy reduces the aggregation of water molecules, increasing their dipole moment and surface tension.

1. Active Descaling & Anti-Scaling: Under the influence of the electric field, the processor generates a massive amount of “micro-crystals.” These crystals act as preferential nuclei for scale-forming ions (Ca²⁺, Mg²⁺). Instead of forming hard, stubborn calcite scale on heat exchange surfaces, these ions form loose, suspendable aragonite crystals. These non-adherent particles are then easily captured by the integrated filtration unit and discharged through the automatic blowdown valve.
2. Advanced Sterilization & Legionella Eradication: Safety in cooling towers is often compromised by Legionella and organic slime. The ArkFlow processor electrolyzes water to produce highly reactive oxygen species (ROS), including hydroxyl radicals (OH⁻), ozone (O₂), and hydrogen peroxide (H₂O₂). These substances possess powerful oxidizing properties that penetrate microbial cell walls, destroying their DNA and metabolic pathways. This process provides a chemical-free environment that is lethal to bacteria and algae.
3. Pipe Passivation & Corrosion Protection: Corrosion is the “silent killer” of industrial piping. By activating dissolved oxygen and generating controlled oxidative species, the ArkFlow processor encourages the formation of a stabilized Magnetic Oxide (Fe₃O₄) layer on the metal surfaces. This passivation film acts as a physical and electrochemical barrier, isolating the pipe wall from the corrosive water environment and significantly extending the equipment’s service life.

Unlike full-process units that require massive housing and high pressure drops, the side-stream approach allows for:

• Reduced Footprint: Smaller equipment size fits easily into existing pump rooms.
• Continuous Operation: Maintenance can be performed on the bypass line without shutting down the entire circulating system.
• Optimized Flow Dynamics: Minimal impact on the main system’s hydraulic balance.