SINOKLE Core Catalytic Technology Breaks the Cost Barrier in Landfill Leachate Treatment

Landfill leachate is a high-strength, hard-to-degrade organic wastewater. With COD concentrations reaching tens of thousands of mg/L and carrying large amounts of toxic and hazardous substances, it is difficult and expensive to treat and has become an urgent problem for the environmental protection industry. With the new Standard for Leachate Treatment of Domestic Waste Landfill (CJJ/T 150-2023) now in force, requirements for full-volume treatment and compliant discharge are increasingly strict. The cost weaknesses of conventional processes are more evident than ever, and the industry urgently needs efficient, economical and innovative solutions.

With over a decade of dedication to the environmental field, SINOKLE Technology Co., Ltd. - a national high-tech enterprise focused on the R&D and industrial application of wastewater treatment technology - has independently developed heterogeneous catalytic ozonation technology backed by more than a dozen core technologies at internationally advanced levels. With outstanding whole-life-cycle cost control, it provides efficient, economical and eco-friendly integrated services for landfill leachate treatment.

To address the industry's pain points in landfill leachate treatment, the company's independently developed heterogeneous catalytic ozonation technology - through dual innovation in catalyst preparation and process integration - breaks the high-cost, high-pollution, low-efficiency dilemma of conventional processes. It delivers multiple benefits: lower cost, energy savings, less waste and reduced labour. As a highly competitive core technology in the industry, it has been applied steadily in numerous landfill and incineration plant projects across China, proving the company's strength with real results.

Unlike the passive compromises of conventional treatment technologies, SINOKLE's heterogeneous catalytic ozonation technology is oriented around low whole-life-cycle cost and full-process compliant discharge. Its cost advantages stem from core breakthroughs in catalyst preparation, process optimisation and system O&M, each supported by precise data and benchmark cases. It effectively compresses customers' environmental investment and maximises project economics. These advantages are concentrated in five dimensions:

1. Chemical and energy costs greatly reduced, with spending strictly controlled at the source

SINOKLE's heterogeneous catalytic ozonation technology eliminates the cumbersome practice of adding auxiliary chemicals such as Fe2+ salts and H2O2, using ozone alone as the core treatment agent and cutting the multiple costs of chemical procurement, dosing and subsequent handling at the source. The company's proprietary composite catalyst is made from low-cost silicon-aluminium materials such as natural clay and kaolin; compared with conventional molecular sieve carriers, carrier cost drops by more than 40%. Combined with the EDUR high-efficiency dissolved-air system, ozone utilisation rises from 60%-75% for conventional ozonation to over 99.98%, hydroxyl radical generation doubles, ozone dosing is only 1/8-1/4 of conventional processes, and the ratio of ozone dose to COD degradation is optimised to 0.5-1.2 - greatly reducing the energy and consumable losses of ozone generation.

Meanwhile, system operating efficiency keeps improving: power consumption is only 0.2-0.3 kWh per tonne of water. For a plant treating 10,000 t/d at an industrial electricity price of CNY 0.6/kWh, annual electricity savings reach CNY 730,000-1,095,000. In a benchmark landfill project in Zhejiang treating 800 t/d of leachate, SINOKLE's technology cut the chemical- and energy-related cost per tonne from CNY 28 under conventional processes to CNY 14-19.6, saving CNY 2.736-4.8384 million a year - an immediate, fully documented reduction.

2. Controllable equipment and consumable costs, reducing long-term O&M losses

As the core of the technology, catalyst stability directly determines consumable costs. SINOKLE uses atomic layer deposition to modify the catalyst surface, greatly improving its anti-fouling performance: the attrition rate is no more than 0.3% and service life exceeds 5 years, far beyond the industry average of 2-3 years. The catalyst can also be regenerated by backwashing (backwash interval extended to 720 hours, with very low activator consumption) and reused. Even at end of life, more than 90% of the metal components in the spent catalyst can be recovered, achieving resource recycling and further compressing the dual costs of consumable replacement and disposal.

On the equipment side, drawing on strong design and manufacturing capability, SINOKLE adopts a skid-mounted, modular integrated design. The structure is compact and simple and requires no complex auxiliary structures, cutting equipment manufacturing and installation costs by 30%-40% compared with conventional processes. Built from special anti-corrosion materials, the equipment readily adapts to the complex water quality of landfill leachate with no obvious corrosion. Annual maintenance cost is only 30% of that of conventional systems and maintenance frequency is 70% lower, greatly reducing downtime losses and repair spending and easing the long-term O&M burden on customers.

3. Secondary pollution disposal costs eliminated, avoiding hidden environmental spending

Conventional landfill leachate treatment generally carries a heavy secondary pollution burden: Fenton oxidation produces 10%-15% iron sludge hazardous waste, and membrane treatment produces 15%-30% concentrate hazardous waste, with concentrate disposal alone costing as much as CNY 280/t - plus compliance risk that is hard to quantify. SINOKLE's heterogeneous catalytic ozonation technology achieves full-volume landfill leachate treatment with genuinely zero hazardous waste and zero concentrate discharge. Scum production is minimal (no more than 0.1 kg per tonne of water, with negligible disposal cost), so there is no spending on hazardous waste transport, incineration or solidification - fully avoiding these hidden costs and helping customers meet both compliance and cost-control goals.

The technology can reduce hazardous waste generation by more than 90%. In a comparable wastewater project in Xinjiang (8,000 t/d), hazardous waste disposal alone saves over CNY 1 million a year. After adopting SINOKLE's technology, a landfill project in Zhejiang eliminated concentrate disposal problems entirely and saved more than CNY 3 million a year - resolving the pain and burden of secondary pollution disposal and delivering both environmental and economic returns.

4. Optimised O&M and infrastructure costs, improving project operating efficiency

With years of dedication to environmental equipment R&D and system integration, SINOKLE focuses on practicality and convenience. The technology is equipped with AI monitoring or DCS/PLC control systems that precisely adjust ozone dosing and reaction parameters in real time, support remote monitoring and intelligent fault diagnosis, and genuinely enable unattended fully automatic operation. Manual intervention drops by more than 70% and labour costs by more than 60%, substantially reducing staffing and improving project operating efficiency.

The skid-mounted design occupies only 1/3 of the footprint of conventional processes, and in some scenarios as little as 1/10, greatly reducing site rental and civil construction costs. It is especially suited to retrofit projects at existing landfills and incineration plants, requiring no additional land and further compressing upfront and long-term operating costs. In addition, the high degree of integration, backed by SINOKLE's well-established supply chain and professional engineering delivery capability, shortens installation time by 30% versus the industry average, enabling rapid commissioning and returns, reducing idle upfront costs and letting customers realise economic benefits sooner.

5. Short payback period and significant long-term returns

Compared with conventional processes (4-6 years payback for membrane treatment, 3-5 years for Fenton oxidation), SINOKLE's heterogeneous catalytic ozonation technology achieves a payback period of only 2-3 years thanks to full-process cost optimisation, with stable and controllable operating costs and no additional spending from later consumable price rises or process upgrades - making it the preferred choice for customers investing in environmental projects.

Benchmark cases prove the value: a landfill project in Zhejiang with a total investment of CNY 8 million and 800 t/d of leachate treatment cut its treatment cost per tonne from CNY 80 to below CNY 40 after adopting SINOKLE's technology, saving about CNY 11.68 million a year with a payback period of just 2.2 years, while effluent COD fell from 1,500 mg/L to below 200 mg/L for stable compliant discharge. A leachate project in Shenzhen with a total investment of CNY 12 million improved operating stability by 300%, cut long-term operating costs by 60% versus membrane treatment, reduced cost per tonne from CNY 120 to CNY 48 and saved about CNY 17.52 million a year with a 2.5-year payback - genuinely delivering both environmental and economic returns and demonstrating the reliability and cost-effectiveness of SINOKLE's technology through real cases.

As a national high-tech enterprise, SINOKLE has always taken technological innovation as its core driver, breaking the cost dilemma of conventional landfill leachate treatment through the whole-life-cycle cost advantages of heterogeneous catalytic ozonation technology. Looking ahead, SINOKLE will continue to focus on refractory industrial wastewater, iterating and optimising its technologies and solutions. Backed by more than a dozen core technologies and a well-established engineering delivery capability, it will provide more customers with efficient, economical and eco-friendly water treatment services, support the building of a zero-waste city and drive cost reduction and efficiency gains across the environmental protection industry.