AOP Advanced Oxidation Water Purification System: Comprehensive Guide to Hydroxyl Radical Deep Purification Technology

I. Product R&D Background and Core Definition

With economic and social development, water pollution has become increasingly complex. The presence of environmental hormones, trace harmful chemicals, and persistent pollutants in water bodies continues to rise. Traditional single-stage water treatment processes (physical filtration, chemical dosing, biological degradation) have significant limitations and struggle to fully degrade trace, recalcitrant contaminants. Moreover, single disinfection technologies using ozone, UV, hydrogen peroxide, or chlorine suffer from limited oxidation capacity, selectivity issues, and constrained purification efficacy, failing to meet stringent water purification standards and environmental discharge requirements.

Leveraging mature water treatment technologies domestically and internationally, we integrate core innovations including UV nanophotocatalysis, ozone oxidation, advanced oxidation processes (AOP), high-efficiency air-water mixing, constant-temperature refrigeration, and intelligent control to develop the next-generation AOP water purification system. AOP refers to Advanced Oxidation Processes—a water treatment method centered on hydroxyl radicals (·OH) as the primary oxidant. It overcomes limitations of traditional methods, enabling comprehensive pollutant removal. The treated water meets current national standards and supports diverse application scenarios.

II. Core Technical Principles

The device leverages multi-technology coupling to precisely generate highly active hydroxyl radicals, utilizing their superior properties for water purification. The process consists of two core steps:

1 Strongly generates hydroxyl radicals

Leveraging mature, advanced oxidation technology, our system features a dual-band medium-pressure UV reactor with 185nm + 254nm wavelengths. Unlike traditional single-band low-pressure UV units: the 185nm band directly photolyzes oxygen to generate ozone and catalyze hydroxyl radicals, while the 254nm band continuously cleaves ozone to produce additional hydroxyl radicals. This synergistic dual-band approach significantly boosts radical yield. Additionally, a custom high-intensity UV source excites nano-catalytic materials, working in tandem with dielectric barrier discharge ozone generation, Venturi jet efficient mixing systems, and a temperature-controlled cooling unit. Under this optimized reaction environment, the system continuously generates abundant, highly active hydroxyl radicals, providing the stable, powerful core drive required for deep oxidation purification.

2: Complete oxidative degradation of pollutants

Hydroxyl radicals possess strong oxidizing power, rapidly destroying bacterial and viral cell membranes and microbial tissue. They non-selectively decompose various water pollutants, effectively degrading harmful substances such as organic compounds, sulfides, phosphates, COD, and BOD into carbon dioxide and water. This reduces pollutant residues at the source and mitigates secondary growth issues.

Core Characteristics of Hydroxyl Radicals

• Strong oxidizing, highly reactive, electrophilicEffectively decomposes bacteria, viruses, and organic compounds; reduces TOC and COD in water.
• Non-selective: Degrades all microorganisms, organic pollutants, and toxic/harmful substances with no untreated areas.
• Fast responseWater flows through the device to complete oxidation and purification, achieving high treatment efficiency.

III. Overall Device Construction and Core Advantages

This all-in-one, highly integrated device combines seven core modules: multi-band medium-pressure UV photocatalytic system, dielectric barrier discharge oxygen/ozone generation system, temperature-controlled cooling system, internal circulation system, Venturi jet mixing system, and intelligent monitoring and control system. It requires no complex infrastructure—simply connect power and water inlet/outlet pipes to start operation.

Key Advantages

• Easy to install, compact footprintModular integrated design with a compact structure; requires no large server room and is suitable for both retrofitting existing water treatment systems and new projects.
• High ozone output concentration with stable operation: Equipped with a dedicated oxygen generation and cooling system, it remains largely unaffected by external temperature or weather conditions. Ozone concentration reaches 120mg/L or higher.
• Efficient air-water mixing with high utilization ratesUses micron-level microbubble cutting technology to enhance ozone solubility, increasing ozone utilization efficiency by over 15%.
• Excellent photocatalytic performanceHigh-intensity custom UV combined with nano-efficient catalytic technology rapidly generates abundant hydroxyl radicals to efficiently oxidize and decompose stubborn organic pollutants.
• High-efficiency response, stable compliance.Water passes through the equipment for advanced oxidation treatment. The effluent COD meets Class I sewage discharge standards and high-grade requirements for recycled water use.
• No secondary pollution; effective cost reductionPollutants break down into harmless carbon dioxide and water without requiring chemical additives. In settings like swimming pools, this can reduce chlorine usage by 30%–70%.
• Energy-efficient and cost-effective operationsThe core medium-pressure UV lamp has a standard lifespan of 8000-10000 hours. With an average daily operation of 10 hours, it should be replaced every 2-3 years.
• Multi-functional integration with broad compatibility: Capable of sterilization and algaecide action, scale and rust removal, water decolorization, odor elimination, COD/BOD degradation, and water passivation for corrosion protection.
• Smart, controllable, and labor-saving: Supports customizable IoT smart control systems, integrates with automation systems, and enables one-click startup, fully automated operation, and remote monitoring.

IV. Industry-Wide Application Scenarios and Exclusive Advantages

1 Drinking Water / Secondary Water Supply Industry

• Efficient sterilization effectively eliminates bacteria, viruses, and microorganisms in water, including stubborn colonies like Legionella.
• Custom high-efficiency UV system to remove residual chlorine, optimize water taste, and deliver crystal-clear, sweet-tasting water.
• Effectively prevents secondary contamination during tap water distribution and storage, ensuring safe drinking water quality.
• No chemical additives. Eliminates residue contamination and extends the service life of water supply pipes and equipment.
• Low-power energy-efficient design, fully automatic operation, easy installation and transport. Ideal for secondary water supply systems in residential complexes, industrial parks, and office buildings.

2 — Pool, Hot Tub & Water Park Industry

• Adapts to all scenarios, including standard pools, hot springs, splash pads, infant pools, and water parks. Especially suited for high-standard family-friendly water play areas and premium commercial pools.
• Scientific equipment selection tailored to diverse operating conditions: Customize the model based on pool volume, water circulation cycle, average daily foot traffic, raw water organic content, and disinfection requirements.
• Purely physical oxidation purification with no chemical additives. Avoids the irritation and harm to skin, eyes, and respiratory system caused by traditional chlorine disinfection.
• Effectively reduces water replenishment and equipment backwash frequency, achieving up to 50% water savings while keeping operating costs under control.
• Delivers superior sterilization and purification efficiency compared to conventional single-function disinfection units, resulting in higher water purity while optimizing the venue's air quality.
• Easy to install: Position the unit after the sand filter and before the heater; it can be connected in series or parallel with the main circulation line.
• Easy maintenance: Simply clean the quartz sleeve every 3-6 months, replace the intake filter regularly, and change the UV lamp on schedule.

3 River, Surface Water, and Landscape Water Treatment Industry

• One-stop solution for disinfection, algae control, water decolorization, odor removal, and purification. Efficiently degrades COD, BOD, and other pollutants in water bodies.
• Improve water quality issues such as eutrophication, blackening, and foul odors to help restore aquatic ecosystems.
• Fast purification with excellent treatment results; effectively addresses black and odorous water and eutrophication issues.
• Flexible adaptation to operating conditions: Given the high variability in organic content and abundant impurities typical of surface water and landscape water sources, ensure sufficient treatment capacity is reserved during equipment selection.

4 Aquaculture Industry

• Efficiently disinfects and sterilizes, eliminates algae, removes water pollutants, purifies aquaculture environments, and reduces the incidence of aquatic diseases.
• Optimize dissolved oxygen levels to boost water aeration and activate mineral nutrients, enabling higher stocking densities and increased aquaculture productivity.
• Reduce disease incidence in aquaculture, minimize drug use, improve product quality and yield, and achieve sustainable eco-friendly farming.
• Targeted selection and adaptation: For high-density aquaculture or ponds with heavy external water pollution, upgrade to the high-spec model.

5 Industrial circulating cooling water industry

• Replaces traditional chemical dosing, offering scale prevention/removal, corrosion inhibition, disinfection, and turbidity reduction.
• Effectively increase the cycle water concentration ratio, save more than 50% of water, and reduce equipment corrosion rates.
• Reduce maintenance costs for heat exchangers and piping; save energy and water; comply with environmental emission standards.
• Adaptable to industrial circulating water systems across chemical, pharmaceutical, food, and manufacturing sectors.

V. Summary of Core Product Competitiveness

Unlike traditional single-process water treatment units (physical, chemical, or biological), AOP advanced oxidation systems address key limitations such as poor selectivity, incomplete purification, secondary pollution risks, high O&M costs, and inconsistent performance. Leveraging multi-technology integration, non-selective hydroxyl radical oxidation, zero chemical dosing, low energy consumption, smart operation, and multifunctional design, these systems meet diverse needs including water quality improvement, regulatory compliance, energy efficiency, equipment lifespan extension, and multi-scenario deployment—making them a highly effective solution for advanced water purification today.