Waste Management

We hope to achieve the vision of zero waste through source classification, process waste reduction, recycling and reuse, and incineration and landfill. Industrial waste cleared in 2022 totaled 1,343,556 tons, in which general industrial waste accounted for 1,342,943 tons and hazardous waste accounted for 613 tons. There were no severe leakages of waste in 2022.

Overview of waste management over the years

Of the general industrial waste, 96% (1,289,482 tons) was reused, including reusing sandblasting waste in cement products and reusing waste wood as fuel, 2% (27,983 tons) was incinerated, 1% (13,146 tons) was landfilled, and 1% (12,332 tons) was treated using other methods (e.g., physical treatment and thermal treatment). Of the hazardous waste, 74% (452 tons) was incinerated, 17% (10 tons) was treated overseas, and 25% (151 tons) was treated using other methods (e.g., solidification and chemical treatment).

Historical Waste Discharge Monitoring Indicator

The volume of waste cleared per unit of product was 43.08 kg/ton in 2022, an increase of 2.33 kg/ton compared with last year. The volume of waste generated due to periodic and annual maintenance increased 126,000 compared with 2021, resulting in the increase in volume of waste cleared per unit of product. The volume of waste incinerated and buried per unit of product was 1.33 kg/ton, down 0.12 kg/ton compared with last year. Efforts are directed in recycling for waste reduction, in order to reduce the volume of waste incinerated and buried.