Domestic waste slag treatment

Domestic waste slag treatment

The treatment of household waste and slag is an important aspect of modern urban environmental protection work. With the acceleration of urbanization, the amount of garbage continues to increase, and garbage disposal has become one of the difficulties in urban management. However, household waste slag is a relatively difficult type of waste in waste treatment. This article will introduce the treatment methods of household waste slag, hoping to be helpful to everyone.

1、 Definition of household waste slag

Domestic waste slag refers to the solid matter left after incineration due to the large amount of inorganic substances and other difficult to burn substances in the Incineration process. The main components of the slag are aluminum oxide, silicon oxide, Calcium oxide, magnesium oxide and other inorganic substances. The color of the slag is generally black or gray, with irregular shape and high hardness.

2、 Treatment methods for household waste slag

1. Composting treatment method

The composting method involves composting household waste slag with other organic substances. This method can effectively reduce the volume of slag and make it become Organic fertilizer. The specific operation steps are as follows:

(1) Mix household waste slag with other organic substances in a ratio of 1:3.

(2) Composting the mixed material usually takes 3-6 months to stack.

(3) After the composting treatment is completed, the compost materials are screened to remove large pieces of slag to obtain fine slag particles and Organic fertilizer.

2. Cement solidification method

The cement solidification method is to mix household waste slag with cement to form a new solid material. This method can effectively reduce the volume of slag and transform it into a new building material. The specific operation steps are as follows:

(1) Mix household waste slag with cement in a certain ratio, usually 1:4.

(2) Stir the mixed substance until it is thoroughly mixed.

(3) Pour the mixed material into the mold and compact it into shape.

(4) Curing the formed solid material usually takes 7-14 days.

3. Slag landfill method

The slag landfill method involves directly burying household waste slag underground. This method has high requirements for landfills and requires good anti-seepage measures. The specific operation steps are as follows:

(1) Transport household waste slag to the landfill site.

(2) Lay a layer of anti-seepage material, such as geomembrane, on the landfill site.

(3) When pouring household waste slag into the landfill, it is generally necessary to control the landfill height to avoid excessive height.

(4) After the landfill is completed, it is necessary to carry out soil covering treatment to make the surface of the landfill flat.

3、 Summary

The treatment of household waste and slag is an important aspect of urban environmental protection work. Domestic waste and slag can be effectively treated through methods such as composting, cement solidification, and slag landfill. When dealing with household waste and slag, it is necessary to pay attention to environmental requirements to avoid pollution to the environment.

Domestic waste slag treatment