Standard for disposal of domestic Incineration slag

With the acceleration of urbanization, the problem of household waste is becoming increasingly prominent. In order to effectively treat household waste, many cities have started using incinerators for treatment. The slag treatment of incinerators is a crucial process that directly affects environmental pollution and resource utilization. Therefore, it is very necessary to formulate the standard for treatment of domestic Incineration slag.

1、 Classification of domestic Incineration slag

The domestic Incineration slag is mainly divided into two categories: bottom slag and fly ash. Bottom slag refers to the slag at the bottom of the incinerator, mainly composed of non combustible substances and ash after combustion. Fly ash refers to the solid particles contained in the flue gas inside the incinerator, mainly composed of burned ash and incompletely burned organic matter.

2、 Treatment method of domestic Incineration slag

1. Bottom slag treatment

Bottom slag is the main slag in incinerators, and there are several main treatment methods:

(1) Landfill: Directly fill the bottom slag in a landfill. This method is simple and economical, but it can cause pollution to the environment.

(2) Recycling: Recycling the recyclable substances in the bottom slag. For example, the metal in the bottom slag can be recycled and reused.

(3) Solidification: Solidify the bottom slag to reduce its impact on the environment. The curing material can be cement, gypsum, etc.

2. Fly ash treatment

Fly ash is another type of slag in incinerators, and the main treatment methods are as follows:

(1) Wet treatment: Mix fly ash with water to form a slurry like substance, and then carry out landfill or solidification treatment.

(2) Dry treatment: Dry the fly ash and then landfill or solidify it.

3、 Standard for disposal of domestic Incineration slag

In order to standardize the treatment of domestic Incineration slag, China has formulated corresponding standards. At present, the domestic Incineration slag treatment standards in China mainly include the following aspects:

(1) Heavy metal content in slag: Specify the content of heavy metal elements in the slag to ensure that the slag will not cause pollution to the environment.

(2) Volume stability of slag: specifies the volume stability of slag to ensure that it does not undergo volume changes in the landfill site.

(3) Chemical properties of slag: specify the chemical properties of slag to ensure that it does not cause harm to the environment and human health during recycling and utilization.

4、 Conclusion

Treatment of domestic Incineration slag is a very important link, and corresponding standards need to be formulated to standardize the treatment process. The treatment methods for bottom slag and fly ash have their own advantages and disadvantages, and they need to be selected according to the actual situation. At the same time, the standard of Incineration slag treatment also needs to be constantly improved and updated to adapt to the changing environment and social needs.