As my country's existing waste management enters a critical stage, the harmless and resource-oriented treatment of aged waste has become a key issue in the environmental protection industry. Zhengzhou Zhongcheng Environmental Protection Equipment Co., Ltd., with years of experience in solid waste treatment, has developed and produced aged waste screening equipment. Leveraging its strong professionalism, leading technological advantages, and rich practical experience, this equipment has become a core solution to the challenges of aged waste treatment. It is widely used in landfill remediation projects across the country, contributing to the construction of "zero-waste cities" and achieving a dual improvement in environmental and economic benefits.

The professionalism of Zhongcheng's aged waste screening equipment is primarily reflected in its precise understanding and targeted design of the characteristics of aged waste. Aged waste has a complex composition, high water and mud content, is prone to entanglement, contains many large debris, and its material properties vary significantly due to different landfill ages. Traditional screening equipment is prone to problems such as clogging, low screening efficiency, and rapid component wear. Zhongcheng's team, addressing this pain point and adhering to the requirements of "T/CAMIE 20—2024 Technical Specification for Resource Utilization Equipment for Stock Waste Sorting," has developed a specialized screening system adaptable to various types of aged waste. From equipment structure and process design to control system, its professional standards are evident across the board.

Regarding core technology expertise, Zhongcheng adopts advanced design concepts from Europe. The core equipment, the disc screen, features a patented Tri-D triangular arc disc design, a unique split-type detachable disc structure, and a spiral disc distribution. This facilitates online replacement of worn discs, reducing maintenance costs, and uses rotational vibration to move the waste, achieving precise sorting based on material size and weight, completely solving the problem of incomplete screening in traditional equipment. Simultaneously, the equipment employs variable frequency drive control, dynamically adjusting processing parameters according to material composition to adapt to aged waste with different moisture contents and degrees of decomposition, ensuring high screening efficiency far exceeding industry standards.

The systematic professionalism of the process design is another core highlight of Zhongcheng equipment. Zhongcheng's waste screening equipment is not merely a collection of individual pieces of equipment, but a complete system solution encompassing the entire process from feeding, pretreatment, screening, to fine sorting. The pretreatment stage features a heavy-duty plate feeder that uniformly and controllably conveys large pieces of material, protecting subsequent equipment. A powerful shredder breaks down large pieces of waste and tangled materials, ensuring they meet the requirements for subsequent screening. A multi-stage screening system, combining disc screens and drum screens, achieves coarse, medium, and fine grading, separating materials into coarse, medium, and fine humus, laying the foundation for subsequent resource utilization. Furthermore, the system integrates intelligent magnetic separation, eddy current separation, and multi-stage air separation modules, enabling precise recovery of ferrous metals, non-ferrous metals, and light combustibles, maximizing resource recovery.

Regarding quality and compliance, Zhongcheng equipment strictly adheres to industry standards. Key components are manufactured using high-strength, wear-resistant materials, undergo rigorous quality testing, and boast a long service life and extremely low failure rate. Meanwhile, the equipment adopts a fully enclosed/semi-enclosed design, equipped with a spray and dust removal system, keeping dust concentration within an extremely low range and operating noise within a reasonable range, complying with GB 12348 "Emission Standard for Environmental Noise at the Boundary of Industrial Enterprises" and GB 16297 "Integrated Emission Standard for Air Pollutants," completely solving the dust, odor, and noise pollution problems of traditional screening processes and meeting environmental compliance requirements.

Compared to traditional screening equipment and similar products, Zhongcheng's aged waste screening equipment has particularly prominent core advantages, which are mainly reflected in four aspects: high efficiency and energy saving, flexible adaptation, intelligent convenience, and high resource utilization rate.

The high efficiency and energy saving advantages are significant, greatly reducing operating costs. Zhongcheng disc screens have a considerable processing capacity, with production line capacity covering a wide range, far exceeding that of traditional drum screens of the same volume. The screening efficiency is also significantly better than drum screens, enabling rapid screening and processing of large quantities of aged waste, shortening project timelines. Meanwhile, the equipment features an optimized power design, resulting in low power consumption and energy efficiency. Combined with specially designed wear-resistant sprockets and a chain-linked structure, it boasts extremely high operational stability, reducing downtime for maintenance. Compared to traditional equipment, energy consumption is significantly lower, maintenance costs are substantially reduced, and long-term operation can save users substantial operating expenses.

Strong flexibility and adaptability meet diverse scenario needs. Zhongcheng equipment adopts a modular design, allowing for flexible configuration of module quantity and process flow based on customer site conditions, processing scale, material characteristics, and resource recovery requirements. It can be used to build fixed production lines or provide skid-mounted mobile equipment that can be directly installed on waste piles without complex infrastructure construction. It is suitable for treating aged waste of varying landfill ages across multiple regions nationwide. Furthermore, the screen aperture size can be flexibly customized to meet specific needs, allowing for adjustment of screening accuracy. It is perfectly applicable to the treatment of various solid wastes, including aged waste, construction waste, and household waste, demonstrating exceptional versatility.

Intelligent and convenient operation reduces reliance on manual labor. The equipment is equipped with a PLC central control system, enabling fully automated operation of the entire production line. It can monitor key parameters such as equipment operating status, output, and energy consumption in real time. Operation is simple, requiring only 1-2 people to complete the entire process, significantly reducing labor costs. Simultaneously, the system has a dynamic adaptive adjustment function, which can monitor changes in material composition in real time and automatically adjust sorting thresholds such as air pressure and magnetic force intensity, reducing manual intervention and ensuring stable screening accuracy and efficiency. A cleaning device is installed inside the screen to effectively prevent screen hole clogging, further improving the convenience and stability of equipment operation.

High resource utilization rate, turning waste into treasure. Through precise screening and multi-module collaboration, Zhongcheng equipment can effectively separate humus, metals, lightweight combustibles, and inorganic aggregates from aged waste, achieving an extremely high resource utilization rate. The sorted humus has a low plasticity, making it suitable for urban greening and mine restoration, and meets the CJ/T 340 standard for "Green Planting Soil". The recovered ferrous and non-ferrous metals have purity exceeding industry standards and can be directly recycled. Lightweight combustibles can be made into RDF (Recycled Dioxide Facility) fuel with considerable calorific value, achieving energy recovery. Inorganic aggregates can be used for brick making and municipal road construction, truly transforming aged waste from an "environmentally negative asset" to an "ecologically positive asset".

The widespread implementation of practical cases further confirms the professionalism and advantages of Zhongcheng's aged waste screening equipment. Currently, Zhongcheng equipment has been implemented in numerous projects across many provinces and cities nationwide, covering key projects such as aged landfill waste screening in Shijiazhuang, Hebei; aged municipal solid waste treatment in Heze, Shandong; and landfill remediation in Nanchang, Jiangxi. One project in Central China, with a large annual processing capacity of existing waste, successfully separated a large amount of humus for urban greening and recovered a considerable amount of metals, achieving a win-win situation for environmental governance and economic benefits. Customer feedback indicates that the equipment operates stably and achieves excellent screening results, effectively addressing many pain points of traditional equipment and becoming the preferred choice for treating aged waste.

Zhongcheng's aged waste screening equipment demonstrates strong professionalism through precise feature adaptation, systematic process design, and strict quality compliance. With its core advantages of high efficiency and energy saving, flexible adaptation, intelligent convenience, and high resource utilization rate, it breaks through the limitations of traditional screening equipment, providing reliable equipment support for the harmless treatment and resource utilization of aged waste. In the future, Zhongcheng will continue to deepen technological innovation, optimize equipment performance, contribute to the high-quality development of my country's environmental protection cause, and promote the construction of a circular economy system.