Applications of Ozone in Industrial Manufacturing

As a specialized manufacturer, we produce industrial-grade ozone for integration across diverse downstream sectors demanding precise oxidation, sterilization, and process optimization. Our focus remains on established, regulatory-compliant applications where ozone provides proven performance in manufacturing environments.

1. Potable Water Treatment Facilities

Municipal and private water treatment operators utilize ozone for advanced purification, targeting the oxidation of organic and inorganic contaminants while delivering significant microbial inactivation. Operators dose ozone directly into raw water streams before final filtration, optimizing performance for cryptosporidium, giardia, and emerging micropollutant removal. The process enhances water taste, odor, and safety without introducing residual by-products commonly associated with chlorine-based systems, meeting stringent regulatory frameworks for potable applications.

Industry compliance standards

• U.S. EPA National Primary Drinking Water Regulations (NPDWR)
• EU Drinking Water Directive 2020/2184
• ANSI/AWWA Standard C653
• WHO Guidelines for Drinking-water Quality

Typical usage ratio

• 1.0–5.0 mg/L, adjusted per contaminant profile, water temperature, and required log reduction value for pathogens

Downstream process integration

• Injected before rapid sand filters and downstream activated carbon polishing; ozone contact reactors ensure defined contact time, followed by degassing and filtration

Final product types

• Treated potable water distributed to municipal and industrial consumers

2. Wastewater Reuse & Industrial Effluent Treatment

Industrial and municipal wastewater facilities implement ozone at advanced treatment stages to break down recalcitrant organic molecules, reduce color, eliminate pharmaceuticals, and disinfect effluents prior to discharge or water reuse. Ozone’s non-selective oxidation supports stringent compliance with surface water discharge limits, particularly in zero liquid discharge (ZLD) and water recycling projects, ensuring reduced ecological impact and regulatory alignment for critical industries.

Industry compliance standards

• U.S. EPA Clean Water Act NPDES Permitting
• EU Urban Wastewater Treatment Directive 91/271/EEC
• ISO 24512:2007 (Drinking water and wastewater services — Guidelines)
• China GB 8978 Integrated Wastewater Discharge Standard

Typical usage ratio

• 2.0–15.0 mg/L depending on influent chemical oxygen demand (COD), total organic carbon (TOC), and disinfection requirements

Downstream process integration

• Integrated as a post-secondary or tertiary step, typically after biological treatment and prior to final clarifiers or membrane filtration modules

Final product types

• Treated water for reuse in industrial make-up water, irrigation supply, or compliant surface water discharge

3. Pharmaceutical and API Manufacturing

Pharmaceutical producers incorporate ozone in controlled cleanroom protocols to decontaminate production areas and vessels, as well as for oxidative synthesis steps in select API and intermediate formulations. Ozone achieves microbial log reductions exceeding traditional chemical agents, aligning with GMP sterilization protocols while eliminating risks of chemical residues, making it especially suited for lines requiring high purity and strict risk management.

Industry compliance standards

• US FDA Title 21 CFR Part 211 (GMP for Finished Pharmaceuticals)
• EU GMP Volume 4
• Japanese PMDA GMP for APIs
• ICH Q7 Good Manufacturing Practice Guidance for Active Pharmaceutical Ingredients

Typical usage ratio

• 0.5–4.0 mg/L for cleanroom and equipment sterilization; up to 10.0 mg/L in batch oxidative steps, determined by precursor load and process time requirements

Downstream process integration

• Introduced via ozone gas generators piped to enclosed spaces, reactors, and CIP (clean-in-place) systems in final cleaning or process oxidation workflows

Final product types

• GMP-compliant APIs and intermediates; sterile pharmaceutical manufacturing environments

4. Food and Beverage Processing

Food processing plants employ ozone as a direct-contact sanitizing agent for produce, surface hygiene, and process water applications, maximizing microbial suppression without chemical residues. Processors substitute ozone for chlorine-based disinfectants to maintain food safety, address allergen cross-contamination, and comply with increasingly restrictive standards on residual sanitizers while protecting product organoleptic quality.

Industry compliance standards

• US FDA 21 CFR §173.368 (Ozone as GRAS for food contact)
• Codex Alimentarius General Principles of Food Hygiene (CXC 1-1969)
• EU Regulation (EC) No 852/2004 on the hygiene of foodstuffs
• ISO 22000:2018 Food Safety Management Systems

Typical usage ratio

• 0.1–2.0 mg/L for produce wash water and surface treatment, tailored by target microbe spectrum and contact time

Downstream process integration

• Applied through inline dissolved ozone dosing units in wash tanks, spray conveyors, or automated CIP skids prior to rinsing and primary packing

Final product types

• Packaged ready-to-eat produce, minimally processed fruits and vegetables, treated food production water, sanitized food contact surfaces

5. Pulp and Paper Bleaching

Pulp manufacturing integrates ozone as an elemental chlorine-free (ECF) bleaching agent for delignification, color removal, and overall pulp brightness improvement. By replacing or supplementing chlorine dioxide, ozone application reduces organically bound chlorine compounds in effluent, allowing mills to meet progressing environmental discharge mandates while producing high-brightness pulps for specialty grades.

Industry compliance standards

• ISO 14001:2015 Environmental Management Systems
• BAT Reference Document for the Production of Pulp, Paper and Board (EU BREF Pulp & Paper)
• US EPA Cluster Rules for Pulp and Paper Mills
• CEPI Guidelines for Sustainable Paper Production

Typical usage ratio

• 0.5–1.5% ozone on dry pulp weight, modulated by initial lignin content and final brightness targets

Downstream process integration

• Injected into high-consistency pulp slurry within specialized ozone reactors after oxygen delignification and before alkaline extraction stages

Final product types

• Bleached market pulp, fine writing paper, tissue, board grades emphasizing environmental compliance

6. Semiconductor and Electronic Component Manufacturing

Manufacturers in the semiconductor industry rely on high-purity ozone for wafer cleaning, surface activation, and resist residue removal at various post-etch and pre-deposition stages. Ozone’s oxidative properties allow sub-micron contamination and organic film removal without ionic contamination risk, a prerequisite for advanced node fabrication and yield preservation in cleanroom operations.

Industry compliance standards

• SEMI F57-0312 (Specification for Polymer Materials and Components Used in Ultrapure Water and Liquid Chemical Distribution Systems)
• ISO 14644-1 Cleanroom Classification
• IEC 61340-5-1 Electrostatics Standards
• RoHS Directive 2011/65/EU (indirectly applicable for final device compliance)

Typical usage ratio

• 100–300 ppm gaseous ozone for wet bench wafer cleaning; up to 10 ppm dissolved ozone in ultrapure rinse water applications

Downstream process integration

• Deployed in oxidation tanks, vapor phase reactors, and inline wet cleaning segments of front-end-of-line (FEOL) and back-end-of-line (BEOL) manufacturing flows

Final product types

• Processed semiconductor wafers, photomask substrates, MEMS components, discrete microelectronic devices