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Why is incineration bottom ash sorting necessary in waste-to-energy plants?

Author: Release time: 2025-10-16 11:40:48 View number: 77

In the rapid development of domestic waste incineration power generation industry today, incineration bottom ash sorting has changed from "optional" to "mandatory". This is not only a mandatory requirement of environmental protection policy, but also a strategic choice for waste-to-energy plants to realize sustainable development and enhance economic efficiency. In this paper, we will analyze the four core reasons why waste power plants must incinerate the bottom ash sorting.

First, the rigid requirements of environmental compliance

With the increasingly stringent national environmental policy, the treatment of solid waste has put forward higher requirements:

  • "Waste-free city" construction requirements to minimize the amount of landfills

  • Domestic Waste Incineration Pollution Control Standards" and other regulations on the incineration of bottom ash treatment put forward clear requirements

  • Solid waste "zero landfill" has become the industry development trend

Unsorted incineration bottom ash directly to landfill, not only occupy a lot of land resources, there are heavy metal leaching and other environmental risks. Through the sorting process, the incineration of bottom ash slag resource utilization rate of nearly 100%, the tailings to GB/T25032-2010 building materials standards, fully meet the environmental requirements.

Second, the continuous source of economic benefits

Incineration bottom ash slag sorting for waste-to-energy plants to open up new channels of profitability:

  • Metal recovery gains: each ton of slag can be recovered in a large number of metals, including higher value of copper, aluminum, stainless steel, etc.

  • Fast return on investment: Mature sorting programs typically pay for themselves in 10-18 months.

  • Ongoing cash flow: Metal sales provide a stable, ongoing source of additional revenue for the plant.

For example, for a project with a processing capacity of 1,000 tons/day, the annual metal revenue can reach tens of millions of yuan, which significantly improves the overall profitability of the power plant.

Social Responsibility of Resource Recycling

As an urban environmental infrastructure, waste-to-energy power plants shoulder the important mission of resource recycling:

  • Saving of metal resources: the recovered metal can reduce mineral mining and save natural resources.

  • Substitution of raw materials for building materials: the tailings after sorting can replace natural sand and gravel, protecting mountains and rivers.

  • Demonstration of circular economy: realizing the closed-loop model of "resources - products - renewable resources".

This not only enhances the social image of the enterprise, but also conforms to the strategic direction of national green development.

Inherent demand for operation optimization

Incineration bottom ash sorting can also bring multiple benefits to the power plant operation level:

  • Reduce disposal costs: resource utilization to avoid high landfill costs

  • Improve system stability: professional incineration bottom ash treatment can reduce the burden on the subsequent system

  • Intelligent upgrading: modern sorting system with PLC automated control improves operational efficiency.

Mature technology, worry-free implementation

After years of development, incineration bottom ash sorting technology has become very mature. Professional companies represented by IbaSorting can provide:

  • Customized solutions from 200 t/d to 2000 t/d

  • Crushing, screening, gravity separation, magnetic separation, eddy current sorting and other full process equipment

  • One-stop service for design, manufacturing, installation and commissioning

  • Successful cases in Jiangsu, Guangdong, Vietnam, etc.

Incineration bottom ash sorting is no longer a choice question of "whether to do it", but a must-answer question of "how to do it better". It is not only an inevitable requirement for waste-to-energy plants to respond to environmental protection regulation, but also an important measure to improve economic efficiency, fulfill social responsibility and optimize operation and management.

Act now to seize the first opportunity for resource utilization!
If you are considering an incineration bottom ash sorting project, please contact our professional team for a customized solution and ROI analysis.

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