How to deal with household waste combustion slag

The treatment of household waste has always been an important aspect of environmental protection, and burning waste is currently one of the treatment methods. However, the slag generated after burning garbage has brought new problems to the environment. So, how to deal with the combustion slag of household waste? Next, this article will provide you with a detailed introduction.

1、 Composition of slag

slag refers to the unburned part and residue after combustion when burning garbage. After testing, the composition of the slag mainly includes inorganic and organic substances. Among them, inorganic substances are mainly metal elements and inorganic salts, while organic substances include organic compounds such as alkanes and Aromatic hydrocarbon.

2、 Treatment method of slag

1. Landfill

Landfill is currently one of the main methods for treating slag. After preliminary treatment, the slag can be directly buried in the landfill. The advantage of landfilling is that it can occupy less land resources, but the slag after landfilling will gradually decay over time, producing harmful gases and liquids, causing pollution to the environment.

2. Curing treatment

solidification treatment is the chemical reaction of slag to form solid block like substances. The solidified slag will not decay over time and can effectively reduce environmental pollution. However, solidification treatment requires the use of a large amount of chemical agents, causing secondary pollution to the environment.

3. Resource utilization

Resource utilization refers to the recycling and utilization of useful substances in slag. The metal elements in the slag can be recovered and utilized through magnetic separation, flotation, and other methods, while organic substances can be treated through biodegradation and other methods. Resource utilization can minimize environmental pollution and also achieve resource reuse.

3、 Treatment process of slag

The treatment process of slag mainly includes several stages, including preliminary treatment of slag, landfill of slag, solidification treatment, and resource utilization.

1. Preliminary treatment of slag

The preliminary treatment of slag is to break the large blocks of material in the slag for subsequent treatment. The preliminary treatment can be carried out by mechanical crushing or other methods.

2. Landfill of slag

The landfill of slag is to bury the preliminarily treated slag in a landfill. Before landfilling, slag needs to be classified, recyclable substances need to be recycled, and non recyclable substances need to be landfilled.

3. Solidification treatment of slag

The solidification treatment of slag is the chemical reaction of slag to form solid block like substances. Solidification treatment can be carried out using methods such as cement solidification.

4. Resource utilization of slag

The resource utilization of slag refers to the recycling and utilization of useful substances in the slag. Recycling can be carried out through methods such as magnetic separation and flotation.

4、 Precautions for slag treatment

1. Classification processing

When processing slag, it is necessary to classify the slag, recycle recyclable substances, and landfill non recyclable substances.

2. Environmental protection treatment

When dealing with slag, it is necessary to adopt environmentally friendly treatment methods to minimize environmental pollution as much as possible.

3. Strengthen supervision

In the process of slag treatment, it is necessary to strengthen supervision to ensure the legality and safety of the treatment process.

In short, the treatment of household waste combustion slag is an important part of environmental protection issues. When dealing with slag, measures such as classification treatment, environmental protection treatment, and strengthened supervision need to be adopted to minimize environmental pollution. At the same time, it is also necessary to strengthen the research and development of slag treatment technology to achieve the resource utilization of slag.