Slag treatment technology after Incineration

Slag treatment technology after Incineration

Incineration is a common waste treatment method, which can effectively reduce the volume and weight of waste, and can also generate energy. However, the slag generated during the incineration process is a problem that cannot be ignored. The slag contains a large amount of heavy metals and harmful substances, and if not properly treated, it will cause serious pollution to the environment. This article will introduce the slag treatment technology after Incineration to help readers understand how to deal with this problem.

1、 Source and composition of slag

Slag refers to the solid waste formed by the melting of inorganic substances in Incineration under high temperature during garbage incineration. The main components of slag include oxides, silicates, metal oxides, heavy metals, etc. Among them, heavy metals are one of the most critical components in slag, as they have high toxicity and bioaccumulation, and their harm to the environment and human health cannot be ignored.

2、 Treatment technology of slag

1. Slag solidification treatment technology

The slag solidification treatment technology is to reduce the harm to the environment by adding solidification agents to the harmful substances in the slag to form solid blocks. At present, commonly used curing agents include cement, silicate, lime, etc. The solidified slag can be used in fields such as road laying and building material manufacturing.

2. Slag resource utilization technology

The slag contains a large amount of metal elements and inorganic substances. If it can be effectively recovered and utilized, it will have a positive impact on the environment and economy. At present, commonly used slag resource utilization technologies include slag brick manufacturing, slag cement manufacturing, and slag landfill coverage.

3. Slag hazardous waste treatment technology

Due to the large amount of heavy metals and harmful substances contained in the slag, if not properly handled, it will cause serious harm to the environment and human health. Therefore, slag is classified as hazardous waste and requires special treatment. At present, commonly used slag hazardous waste treatment technologies include chemical stabilization, physical stabilization, biological stabilization, etc.

3、 Selection of slag treatment technology

When selecting slag treatment technology, it is necessary to comprehensively consider factors such as the composition, properties, yield, and use of the slag after treatment. If the heavy metal content in the slag is high, chemical stabilization technology can be used for treatment; If the production of slag is large, resource utilization technologies such as slag brick manufacturing or slag cement manufacturing can be considered; If the slag contains a large amount of organic matter, biological stabilization technology can be used for treatment.

In short, the slag treatment technology after Incineration is a very important problem, which requires us to make more efforts to solve. By adopting appropriate treatment technologies, the harm of slag to the environment and human health can be minimized, and the resource utilization of slag can also be achieved, making positive contributions to the environment and economy.

Slag treatment technology after Incineration