SINOKLE Municipal-Wastewater Dedicated Heterogeneous Ozone Catalyst: Comprehensive Evaluation and Engineering Applications

As a specialized, innovation-driven high-tech environmental enterprise, Shenzhen SINOKLE Technology has long focused on industrial and municipal advanced-oxidation wastewater treatment. Addressing the industry needs of municipal WWTP biochemical tail-water upgrading, emerging micropollutant removal, deodorization and decolorization, and reclaimed-water reuse,it independently developed a municipal-wastewater dedicated heterogeneous ozone catalyst. The product integrates four proprietary core technologies suited to municipal water quality — a multi-metal catalytic formula, high-porosity microporous monolithic shaping, atomic-deposition super-hydrophilic anti-scaling modification, and staged precise temperature-controlled sintering — with outstanding anti-scaling and anti-colloid-fouling performance.It can be paired with the company'sCDFUswirl dissolved-air flotation (CDFU),CDOFand integrated ozone-oxidation equipment for complete use, building a full process chain of 'front-end filtration pre-treatment + ozone catalytic deep oxidation,' specifically suited to municipal-WWTP secondary biochemical tail-water upgrading, surface-water Class IV transformation, reclaimed-water reuse, and combined-sewer-overflow treatment. It is the preferred catalytic medium for municipal ozone deep oxidation.

Product catalytic mechanism and core performance indicators

(I) Catalytic mechanism

The municipal-wastewater dedicated heterogeneous ozone catalyst uses a porous inorganic composite substrate, shaped by staged temperature-controlled monolithic sintering, with an internally connected multi-level micropore structure (specific surface area >250 m²/g) and abundant dual-acidic active sites on the surface. It loads manganese, iron, and copper composite transition-metal active components; some models can be doped with precious metal as needed. The multi-component synergy greatly lowers ozone-decomposition activation energy, rapidly catalyzing ozone cleavage to generate abundant hydroxyl radicals (·OH); oxidation efficiency is 2–5× that of ordinary ozone oxidation alone.

For residual humic substances, trace pharmaceuticals, endocrine disruptors, and disinfection-byproduct precursors in municipal biochemical tail water, ·OH non-selectively cleaves organic bonds, mineralizing stubborn organics into CO₂ and water; it simultaneously achieves decolorization, deodorization, and odor-substance degradation, lowering UV254 and improving effluent biodegradability while easing the load on downstream BAC and membrane systems. The carrier's atomic-deposition super-hydrophilic modified layer effectively suppresses municipal-water calcium/magnesium scaling, colloid, and microbial-slime attachment and pore clogging; active components are high-temperature anchored with no metal-ion leaching, avoiding water secondary pollution.

(II) Key technical indicators

Eight core product advantages of the municipal-wastewater dedicated heterogeneous ozone catalyst

Suited to municipal low-concentration micropollutants, high ozone-utilization efficiency
The multi-metal synergistic catalytic system is optimized for municipal tail water's low-COD, trace-refractory-pollutant conditions; ozone decomposition utilization stays above 97%. At equal effluent standards it effectively lowers ozone dosing, reduces ozone-unit capacity, and cuts the plant's per-tonne power consumption; it excels at removing humic substances, geosmin, MIB odorants, and trace pharmaceutical residues, delivering simultaneous decolorization and deodorization.

Anti-scaling, anti-colloid adhesion, suited to municipal calcium/magnesium hard water
Using atomic-deposition super-hydrophilic surface modification, it suppresses municipal-water calcium/magnesium salt scaling, microbial extracellular polymer, and colloidal-slime adhesion — solving the industry pain of catalysts easily scaling and clogging pores with rapid activity decay in municipal wastewater. Active components are high-temperature sintered and anchored with no leaching, never causing effluent heavy-metal exceedance, safeguarding reclaimed-water safety.

Excellent mechanical strength, ultra-low wear loss
Particles are monolithically high-temperature sintered with single-granule compressive strength ≥100 N; under frequent gas-water backwash and high-flow hydraulic scouring they resist fragmentation and pulverization; annual wear is kept within 0.3%. Under municipal plants' high-flow continuous operation, catalyst replenishment is low, cutting medium O&M procurement cost.

Anti-microbial fouling, suited to plants' year-round uninterrupted operation
A special micropore structure plus hydrophilic modified surface makes it hard for microbes to grow and form biofilm inside pores, reducing biological-slime clogging; no frequent shutdown to dismantle and clean the catalytic reactor — fully matching large municipal WWTPs' 24 h uninterrupted, high-flow continuous production mode.

Long service life, simple regeneration, low hazardous-waste output
Under normal municipal conditions service life exceeds 5 years, higher than ordinary commercial catalytic media. When surface scaling or organic adsorption saturation occurs, acid wash + water wash regenerates catalytic performance, extending the overall replacement cycle and reducing spent-catalyst hazardous-waste volume and disposal cost — outstanding full-life-cycle O&M economy.

Broad-spectrum pollutant degradation, both deep upgrading and reclaimed-water pre-treatment
Abundant dual-acidic active sites efficiently oxidize and decompose humic acid, trace pharmaceuticals, endocrine disruptors, disinfection-byproduct precursors, and odor-causing substances. It can serve both for biochemical tail-water deep treatment to reach Grade 1-A or approximate Class IV, and as reclaimed-water reuse pre-treatment, reducing organic pollution on downstream biological activated carbon, ultrafiltration, and reverse-osmosis membranes and extending membrane and media life.

Strong package-equipment compatibility, linkable with SINOKLE pre-treatment process
It can be paired with the company'sCDFUswirl dissolved-air flotation (CDFU) and filtration units for coordinated use; front-end pre-treatment removes suspended solids and minor scum, preventing impurities from covering catalyst active sites; the rear municipal dedicated heterogeneous ozone catalytic unit deeply degrades dissolved trace organics, one-stop solving municipal tail-water COD, color, and odor exceedances.

Green, low-carbon operation, low chemical dosing, low secondary pollution
The whole ozone catalytic flow needs no large dosing of flocculation or decolorization chemicals; chemical-sludge output is greatly reduced. The carrier is stable with no heavy-metal leaching; ozone tail gas can be recovered and recycled or catalytically decomposed before discharge, with no odor escape — meeting municipal plants' green low-carbon operation requirements.

Multi-industry deployment scenarios and engineering-case results

(I) Large municipal WWTP biochemical tail water upgraded to approximate Class IV

Project overview:A prefecture-level municipal WWTP, capacity 50,000 m³/d, secondary biochemical effluent COD 55–80 mg/L, color 40–60-fold, with obvious earthy odor, required effluent to meet surface-water approximate Class IV (COD≤30 mg/L) as river ecological replenishment.

Operating parameters:Ozone dosing 10 mg/L, catalyst fill/dose 5 g/L, hydraulic retention 20 min

Treatment results:Catalytic oxidation unit COD removal 48%, effluent COD stably ≤28 mg/L, color reduced within 10-fold, geosmin and other odorants removed 93%; effluent meets approximate Class IV and can directly serve as river ecological replenishment; downstream BAC filter load is significantly reduced.

(II) Municipal wastewater reclaimed-water reuse deep treatment

Project overview:An industrial-park supporting municipal WWTP, secondary biochemical effluent COD 60–95 mg/L, needed treatment as industrial circulating cooling make-up, requiring effluent COD≤40 mg/L.

Operating parameters:Ozone dosing 7 mg/L, catalyst dose 4 g/L, hydraulic retention 15 min

Treatment results:Catalytic unit COD removal 46%, effluent COD stably within 35 mg/L, UV254 greatly reduced, effectively slowing downstream UF membrane organic fouling; membrane chemical-cleaning cycle doubled; reclaimed water stably reused in the circulating cooling system.

(III) Combined-sewer overflow (CSO) emergency wastewater treatment

Project overview:Urban combined-sewer network overflow, with large rainy-season quality fluctuation, COD 90–160 mg/L, high suspended solids and high color, needing rapid emergency deep treatment and discharge.

Operating parameters:Ozone dosing 15 mg/L, catalyst dose 6 g/L, hydraulic retention 25 min

Treatment results:COD removal 44%, color removal 94%, rapidlydecomposing humic substances and organic pollutants in overflow wastewater, reducing its impact on receiving water bodies and adapting to short-term large fluctuations in flow and quality.

(IV) Other general extended application fields

Upgrade of small/medium urban WWTPs:solve non-compliant biochemical effluent COD and color, stabilize Grade 1-A discharge;

Park comprehensive municipal wastewater:treat municipal comprehensive tail water mixed with minor industrial wastewater, removing trace refractory pollutants;

Circulating-water make-up pre-treatment:degrade organic slime-forming substances, reducing bactericide and scale-inhibitor dosing;

WWTP deodorization coupling process:synergistically degrade waterborne odorants, reducing the source of plant malodor;

Large centralized rural domestic sewage:deep treatment for landscape reuse and farmland irrigation.

SINOKLE packaged process scheme advantages

1. Municipal WWTP biochemical tail-water approximate-Class-IV upgrading process

Filtration pre-treatment +CDOFozone catalytic oxidation (charged with municipal dedicated heterogeneous ozone catalyst) + biological activated carbon (BAC). Front-end filtration removes SS, protecting the catalyst from suspended-solid pollution; the ozone catalytic unit efficiently removes trace refractory organics, color, and odor; rear BAC further mineralizes small-molecule intermediates, stably reaching approximate Class IV — suited to new and large WWTP retrofit projects.

2. Simplified skid-mounted reclaimed-water reuse process

CDFUSwirl-air-flotation filtration + municipal dedicated heterogeneous ozone catalyst catalytic oxidation system
Skid-mounted modular integration, small footprint, suited to old-plant retrofit and capacity expansion; ozone catalysis as membrane-system front-end pre-treatment reduces membrane fouling, simplifies the flow, and meets industrial-reuse and green-irrigation water requirements.

3. General core advantages of the package process

Modular skid, on-line construction without shutdown:Equipment is factory prefabricated, assembled, and commissioned; on-site only pipeline and electrical connections are needed to start. Retrofit construction needs no full plant shutdown, avoiding the environmental risk and economic loss of stoppage, reducing civil structures and saving capital investment.

Fully automatic intelligent closed-loop control:The whole system carries online COD, UV254, pH, ozone concentration, flow, and pressure instruments; feed distribution, catalytic reaction, gas-water backwash, and tail-gas ozone decomposition are fully auto-regulated, supporting remote cloud monitoring and suiting municipal plants' automated O&M with less on-site attendance.

Fully enclosed pressurized safe operation:Wastewater, ozone, and volatile exhaust all flow within enclosed chambers and pipelines; ozone tail gas is decomposed centrally with no leakage and no odor, fully meeting municipal WWTP safety-production and environmental-control norms.

Summary of comprehensive economic and environmental value

1. Environmental value

Active components are high-temperature anchored and cured; the whole operation leaches no heavy-metal ions, safeguarding reclaimed-water and ecological-replenishment water quality and preventing secondary pollution;

efficiently mineralizes municipal tail-water humic substances, trace pharmaceuticals, and odorants; effluent COD, color, and odor stably meet standards, supporting river ecological replenishment and reclaimed-water reuse as water-resource goals;

reduces flocculation and decolorization agent dosing; chemical-sludge output is cut, easing sludge-disposal environmental pressure;

ozone tail gas can be recovered and recycled or catalytically decomposed before discharge, with no ozone or odor escaping the plant.

2. Economic value

Efficient ozone catalytic decomposition cuts ozone-system energy consumption by over 35% at equal treatment effect, saving the plant's per-tonne water-treatment electricity long-term;

catalyst service life exceeds 5 years and is renewable; medium procurement and replacement frequency is greatly reduced;

skid-integrated mode cuts civil investment; on-line retrofitting avoids plant shutdown risk;

annual wear rate ≤0.3%, low medium loss, small daily replenishment; reduces downstream BAC and UF membrane cleaning/replacement frequency, giving better full-life-cycle O&M cost than ordinary ozone catalysts.

3. Engineering delivery assurance

The municipal-wastewater dedicated heterogeneous ozone catalyst, paired withCDOFozone-oxidation package equipment, has completed long-term industrial validation at multiple domestic municipal WWTPs and park reclaimed-water projects, with stable, low-failure equipment operation. SINOKLE has a complete technical-service team covering R&D, process design, on-site commissioning, and catalyst regeneration/maintenance, providing one-stop support — water testing, customized process schemes, equipment installation, and on-site O&M. Holding high-tech enterprise, specialized-innovation, multiple ozone-catalysis invention patents, and complete ISO three-system qualifications, it offers reliable assurance for municipal project delivery.

Conclusion

SINOKLE's municipal-wastewater dedicated heterogeneous ozone catalyst, relying on four core innovations — multi-metal synergistic catalytic system, atomic-deposition anti-scaling super-hydrophilic modification, high-specific-surface anti-clog micropore structure, and high water-shock-resistance stable carrier — specifically solves the industry pain points of traditional ozone catalysts in municipal tail-water conditions: easy scaling, easy biological-slime clogging, low efficiency on trace pollutants, and high ozone energy consumption.The product can be deeply linked with SINOKLE's proprietaryCDFUflotation,CDOFand ozone-oxidation package equipment to build an integrated deep-oxidation governance system suited to municipal WWTP biochemical tail-water upgrading, surface-water approximate-Class-IV transformation, reclaimed-water reuse, and combined-sewer-overflow treatment; it balances pollutant-removal effect, per-tonne energy, O&M input, construction delivery, and safety/environment, and is an efficient, stable dedicated catalytic-medium solution for the upgrading of urban WWTPs and water-resource recycling.