Trommel screen waste separation equipment: The Key Equipment to Solve Solid Waste Treatment Challenges
Release time：2025 / 11 / 04 15:56:24 Author：Guoxin Machinery
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Driven by both the "dual carbon" goals and the construction of "zero-waste cities", solid waste treatment has upgraded from "harmless treatment" to "resource recycling". If construction waste and domestic waste are treated through traditional landfilling and incineration methods, not only will there be severe resource waste, but secondary pollution will also be easily caused. As a "sorting tool" at the front end of solid waste treatment, trommel screen waste separation equipment is opening up channels for resource circulation with its precise separation capability, becoming the core support for the industry's transformation.
I. From "Mixed Treatment" to "Precise Sorting": How Does the Equipment Address Industry Pain Points?
In traditional solid waste treatment, mixed waste often directly enters subsequent processes, resulting in a recycling rate of renewable resources of less than 20% and increased treatment costs due to excessive impurities. The emergence of trommel screen waste separation equipment has fundamentally changed this situation, with its core logic being to achieve "classified placement" of waste through "physical sorting".
The core structure of the equipment is designed around "efficient separation":
- The drive system adopts a combination of a motor and a reducer, which can adjust the drum rotation speed according to the characteristics of the waste. This avoids incomplete sorting caused by excessively high rotation speed or low efficiency due to excessively low speed.
- The main drum body is installed at an inclined angle, controlled between 5° and 10°. This design not only uses gravity to assist the flow of materials but also ensures that materials have sufficient residence time inside the drum.
- The screen mesh is customized according to treatment needs: for construction waste sorting, mesh apertures of 10-50mm are commonly used; for domestic waste sorting, 5-20mm apertures are mostly adopted; in some special scenarios, multi-layer screen meshes are also used to achieve multi-stage sorting.
In actual operation:After mixed waste enters the drum through the feed hopper, it continuously flips and rolls as the drum rotates. During this process, materials with a particle size smaller than the screen mesh aperture fall through the screen into the receiving hopper below, becoming "useful resources" that can be recycled or reused; materials with a particle size larger than the screen mesh aperture are discharged from the end of the drum and enter subsequent crushing or harmless treatment processes.
This "dynamic sorting" mode effectively solves the clogging problem of traditional vibrating screens when handling viscous waste, and can stably process kitchen waste with a humidity exceeding 30% and construction waste mixed with soil.
II. Three Core Advantages: Why It Becomes the "Preferred Equipment" for Solid Waste Treatment?
In solid waste treatment scenarios, trommel screen waste separation equipment has achieved rapid popularization due to its comprehensive advantages in efficiency, adaptability, and environmental protection—advantages that distinguish it from other sorting equipment.
1. Efficient and Stable Treatment Capability
Compared with vibrating screens (which have a processing capacity of 20-50 tons per hour), a medium-sized drum screening equipment can achieve a single-machine processing capacity of 50-150 tons per hour, with a failure rate of less than 3% during continuous operation. Data from a construction waste treatment plant shows that after introducing this equipment:
- The purity of recycled aggregates increased from 75% to 92%.
- The yield rate of subsequent brick-making increased by 18%.
These improvements have significantly reduced resource waste.
2. Wide Scenario Adaptability
Whether it is the separation of plastics, paper, and inorganic substances in municipal domestic waste, the sorting of concrete blocks, bricks, and wood chips in construction waste, or even the classification of slag and gangue in industrial solid waste, the equipment can achieve adaptation by adjusting the screen mesh aperture and drum rotation speed. In the field of lithium battery recycling, some enterprises have also realized the preliminary separation of battery pole pieces and casings by customizing stainless steel screen meshes, laying a foundation for subsequent refined recycling.
3. Low-Consumption and Environmentally Friendly Operation Characteristics
- The equipment adopts a sealed design, with dust emissions during screening of less than 10mg/m³, meeting national air pollutant discharge standards.
- The motor power is mostly between 11-30kW, and compared with other sorting equipment with the same processing capacity, its energy consumption is reduced by approximately 25%.
After a domestic waste incineration plant introduced this equipment, by separating non-combustible inorganic substances in advance, the thermal efficiency of the incinerator increased by 12%, reducing coal consumption by about 800 tons annually.
III. Technological Iteration and Market Trends: How Will the Equipment Develop in the Future?
With the increasing demand for refined solid waste treatment, trommel screen waste separation equipment is constantly being upgraded, and technological innovation has become the core driving force for the industry's development.
Currently, intelligent upgrading has become the mainstream direction. Some enterprises have launched "intelligent drum screening equipment", which can monitor material flow and humidity in real time through sensors, and automatically adjust the drum rotation speed and screen vibration frequency to achieve "adaptive sorting". Data from a project shows that the sorting accuracy of intelligent models is 15% higher than that of traditional models, and the frequency of manual intervention is reduced by 60%, significantly improving operational efficiency.
Material innovation is also promoting the improvement of equipment performance:
- Traditional screen meshes are mostly made of ordinary steel, with a service life of about 6-12 months. However, screen meshes made of wear-resistant alloys and polyurethane materials can extend the service life to 24-36 months, while reducing the wear of materials on the screen mesh and lowering replacement costs.
- In industrial solid waste treatment scenarios with strong corrosion, drum bodies made of stainless steel and glass fiber reinforced plastic (FRP) have solved the problem of easy corrosion of the equipment, expanding its application scope.
From the perspective of market trends, the demand for equipment is shifting from "single sorting" to "integrated solutions". More and more enterprises have begun to provide combined equipment of "drum screening + crushing + magnetic separation", realizing one-stop treatment of waste including "sorting - crushing - resource recycling".
Data shows that in 2024, the market size of drum screening equipment in China reached 14.73 billion yuan, of which integrated solutions accounted for 38%. It is expected that this proportion will exceed 45% in 2025, becoming the main driving force for market growth.
Against the backdrop of accelerated construction of "zero-waste cities", trommel screen waste separation equipment is not only the "key equipment" for solid waste treatment but also a "bridge" driving the circular utilization of resources. In the future, with continuous technological upgrading, it will play a role in more segmented scenarios, providing stronger support for achieving the goals of solid waste reduction, recycling, and harmless treatment.
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