SINOKLE Precious-Metal Ozone Catalyst KLE-HEC-200-A20: Comprehensive Evaluation and Engineering Applications

As a specialized, innovation-driven high-tech environmental enterprise, Shenzhen SINOKLE Technology has for years focused on advanced oxidation of industrial wastewater and oil-water separation,the independently developed KLE-HEC-200-A20 is the company's self-developed precious-metal-loaded heterogeneous ozone catalyst. It integrates four proprietary technologies — multi-transition-metal + precious-metal composite catalysis, high-specific-surface-area microporous shaping, atomic-deposition hydrophilic modification, and an anti-chlorine-poisoning protective layer — and is developed specifically for advanced treatment of biochemical tail water with COD<200 mg/L, reclaimed-water reuse, and low-concentration, highly toxic, refractory wastewater.

The product can be packaged withCDFUswirl dissolved-air flotation (CDFU),CDOFand integrated ozone-oxidation equipment to build a complete process chain of 'front-end physical impurity-removal pre-treatment + precious-metal ozone catalytic deep oxidation,' solving industry shortcomings such as low degradation efficiency of conventional catalysts on low-concentration organics, easy clogging, chlorine-ion-induced activity decay, and insufficient ozone utilization. It is a high-performance catalytic medium for end-of-line upgrading and water-resource recycling in industries such as chemicals, petrochemicals, landfill leachate, pharmaceuticals, and dyeing.

Catalytic mechanism and core technical parameters

(I) Catalytic mechanism

A porous inorganic carrier is prepared by staged temperature-controlled sintering + atomic-deposition precious-metal loading; the carrier has a specific surface area >250 m²/g and builds synergistic active sites of transition and precious metals on its surface, paired with a CeO₂ anti-chloride-passivation protective layer. The precious metal greatly lowers the activation energy for ozone decomposition, rapidly catalyzing ozone to generate strongly oxidizing hydroxyl radicals (·OH); oxidation efficiency is 2–5× that of ordinary silica-alumina catalysts. It efficiently cleaves the macromolecular bonds of trace antibiotics, halohydrocarbons, dyes, and humic substances, directly mineralizing them into CO₂ and H₂O while improving wastewater B/C biodegradability. A surface super-hydrophilic modified film blocks suspended solids, colloids, and oil, preventing micropore clogging; the cerium-based protective layer suppresses chloride ions from occupying active sites, adapting to long-term stable operation under high-chloride, high-salinity conditions.

(II) Core performance indicators

Seven core product advantages

Precious-metal synergistic catalysis, outstanding advantage on low-concentration pollutants
For trace refractory organics in biochemical effluent, at equal ozone dosing the COD removal rate improves 30%–50%, ozone utilization stays above 98%, ozone dosing can be reduced 30%–60%, lowering ozone-unit capacity and long-term power consumption — perfectly suited to end-of-line deep purification where COD<200 mg/L.

Ultra-high specific-surface-area microporous structure: higher reaction efficiency, smaller footprint
Breaking 250 m²/g in specific surface area, the internally connected micropores greatly improve gas-liquid-solid three-phase contact efficiency; hydraulic retention can be shortened to 20–35 min, reducing reactor tank volume and saving civil-construction investment.

Atomic-deposition hydrophilic modification: anti-fouling, anti-clogging, long-cycle, maintenance-free
A stable hydrophilic isolation layer forms on the particle surface, making it hard for suspended solids, emulsified oil, and colloids to attach and clog pores; it suits refineries' and pharmaceutical plants' 24-hour uninterrupted production, greatly reducing shutdown-cleaning frequency and O&M labor.

Anti-chloride-ion poisoning, suitable for high-salinity, high-chloride chemical wastewater
The carrier is coated with a CeO₂ protective layer that suppresses chloride ions from passivating precious-metal active sites; over half a year of continuous operation on high-chloride wastewater, catalytic activity decay was only 7%, far better than the >30% decay of ordinary media.

High mechanical strength, extremely low wear: controllable medium O&M cost
Gradient high-temperature sintering shaping yields a dense particle structure that resists pulverization under gas-water backwash and high-velocity scouring; annual wear rate ≤0.3%, with very little annual medium replenishment, reducing hazardous-waste generation and medium procurement spend.

Long life, renewable: excellent full-life-cycle economy
Service life exceeds 5 years under standard conditions; after activity decay, simple acid washing restores catalytic performance, extending the overall replacement cycle. Although single procurement cost is higher than economy catalysts, the combined cost of ozone energy, medium loss, and hazardous-waste disposal is lower, giving clear medium-to-long-term project cost-performance.

High compatibility with package equipment, paired with SINOKLE integrated pre-treatment process
Can be directly charged intoCDOFozone-oxidation equipment; the front end pairs withCDFUswirl-air flotation to remove trace floating oil and suspended solids, preventing impurities from covering precious-metal active sites. The whole process needs no large dosing of flocculation or decolorization agents; chemical-sludge output drops over 70%, with no heavy-metal secondary pollution.

Main application industries and engineering-case results

(I) Landfill leachate biochemical tail-water deep treatment

Project overview:After two-stage biochemical treatment, landfill leachate had COD 150–190 mg/L and high color, with residual humic substances, failing discharge standards.

Operating parameters:Ozone dosing 100 mg/L, catalyst dosing 5 g/L, retention 30 min

Treatment results:COD removal 68%, effluent COD ≤60 mg/L, color reduced within 5-fold; membrane-system load eased and NF/RO membrane life extended, achieving compliant discharge and partial reclaimed-water reuse.

(II) Pharmaceutical API biochemical tail-water upgrading

Project overview:A pharmaceutical company's A/O biochemical effluent had COD 160–190 mg/L with residual trace bacteriostatic antibiotics and very poor biodegradability.

Operating parameters:Ozone dosing 120 mg/L, catalyst dosing 6 g/L, retention 35 min

Treatment results:Trace-antibiotic removal 96%, effluent COD stably <60 mg/L, B/C raised from 0.12 to 0.36; effluent reusable for workshop equipment washing.

(III) Petrochemical refining biochemical effluent reclaimed-water reuse

Project overview:After flotation + biochemical treatment, a heavy-oil power plant's combined wastewater had COD 140 mg/L with trace colloids and dissolved oil, failing circulating-cooling-water reuse standards.

Operating parameters:Ozone dosing 80 ppm, catalyst dosing 4 g/L, retention 25 min

Treatment results:Effluent COD <50 mg/L, color <10-fold, fully meeting industrial circulating-water reuse indicators and greatly cutting the plant's fresh-water intake cost.

(IV) General application fields

Dyeing/leather:deep decolorization of biochemical tail water, cutting decolorization agents and sludge hazardous waste;

Fine chemicals/coking:decomposing trace halohydrocarbons and PAHs, eliminating effluent biological toxicity;

Power/metallurgy circulating water:degrading organic slime, reducing bactericide and scale-inhibitor dosing;

VOC absorption waste liquid:oxidatively decomposing organic volatiles, enabling waste-liquid recycling or compliant discharge.

Advantages of the packaged process scheme

1. Standardized biochemical tail-water upgrading process

CDFUSwirl dissolved-air flotation (CDFU, removes suspended solids and trace floating oil) +CDOFozone catalytic oxidation (charged with KLE-HEC-200-A20), skid-mounted and modularly prefabricated; on-site only pipeline and electrical connections are needed. Retrofitting existing wastewater stations requires no production stoppage, avoiding output loss and shortening project delivery.

2. Integrated reclaimed-water reuse process

Two-stageCDFUpre-treatment + precious-metal ozone catalytic unit + sand-filter deep filtration, paired with a fully automatic intelligent control system that monitors COD, ozone concentration, flow, and pressure online and auto-adjusts ozone dosing, gas-water backwash, and slag discharge, supporting remote monitoring with no on-site attendant required.

3. General advantages of the package system

Fully enclosed, pressurized operation: wastewater and ozone-reaction exhaust flow enclosed throughout; tail gas is catalytically decomposed centrally, with no odor leakage, meeting chemical-park safety-production norms;

Low capital investment: skid equipment replaces large civil structures, greatly reducing construction cost;

Harmless tail-gas treatment: residual ozone is decomposed centrally, with no secondary exhaust pollution.

Environmental and comprehensive economic value

(I) Environmental value

The precious-metal composite carrier is highly stable; operation releases no heavy-metal or precious-metal ions, causing no water secondary pollution;

deep mineralization of persistent toxic organics stably guarantees effluent COD and color compliance, supporting enterprises' near-zero-discharge and reclaimed-water-reuse green production;

greatly reduces flocculation and decolorization agent dosing; chemical-sludge hazardous-waste output drops markedly, easing enterprises' hazardous-waste-disposal pressure;

ozone tail gas is paired with a decomposition unit, with no ozone exhaust emission and a clean plant work environment.

(II) Economic value

Ozone utilization ≥98%; at equal effluent standards, ozone equipment consumes less power, saving electricity long-term;

catalyst life exceeds 5 years and is renewable; medium-replacement frequency is low, keeping annual medium amortization controllable;

skid equipment saves civil investment; on-line retrofitting avoids shutdown losses; reclaimed-water reuse cuts fresh-water intake and discharge-fee spending, generating ongoing water-saving returns;

ultra-low wear and anti-clogging features reduce equipment-cleaning and medium-replenishment labor and consumables, giving clear full-life-cycle O&M cost advantage.

(III) Engineering delivery assurance

The packaged process has completed long-term industrial validation across landfill, pharmaceutical, petrochemical, and fine-chemical industries, with stable equipment operation and no large-scale deactivation or pulverization failures. SINOKLE fields a professional technical-service team providing one-stop services — water testing, process customization, equipment installation and commissioning, catalyst regeneration, and after-sales O&M. The company holds high-tech enterprise, specialized-innovation, ISO three-system, and multiple invention-patent qualifications, ensuring reliable project delivery.

Conclusion

The KLE-HEC-200-A20 precious-metal ozone catalyst, leveraging core patented technologies of precious-metal synergistic catalysis, ultra-high specific surface area, super-hydrophilic anti-fouling, and anti-chlorine-ion poisoning, specifically solves the pain points of low-concentration biochemical tail-water treatment.The product is deeply linked with SINOKLE's proprietary oil-water separation package equipment, forming an integrated advanced-oxidation solution suited to end-of-line upgrading, reclaimed-water reuse, and low-concentration high-toxic waste-liquid purification.

The product balances treatment effect, operating energy, O&M cost, construction convenience, and safe eco-friendly production — an optimal high-performance precious-metal catalytic medium for deep oxidation of refractory industrial wastewater with COD<200 mg/L, widely applicable to environmental projects such as wastewater-station upgrading, park reclaimed-water reuse, and compliant chemical-tail-water discharge.