Ceramic industry is a high energy consumption, high pollution and resource dependent industry. China's ceramic products account for more than 50% of the world's total, and the export volume accounts for 20% of the world's total. The problems such as high resource consumption, high energy consumption and heavy environmental pollution have not been solved for a long time. The traditional treatment of "three wastes" is a breakthrough for ceramic enterprises to promote energy conservation and carbon reduction and the construction of ecological civilization.
1. Waste gas treatment is complicated
One is the process waste gas dominated by dust produced in the processing process; The other is the high-temperature gas produced by various cave furnaces when firing ceramics. These gases will produce harmful gases such as carbon monoxide and sulfur dioxide. Not only the dust has high dispersion, fine particles, but also the emission is large, which is not easy to be cleaned.
2. Waste residue
Solid and liquid wastes discharged or discarded in the process of human production and life. The waste residue formed in the process of ceramic industry production is also the waste generated in the processes of molding, drying, glazing, handling, calcination and so on. Waste residue is not hazardous waste and will not affect people's health. Therefore, many ceramic enterprises deal with waste residue in different ways. Many people choose to landfill or dump in the process of disposal; Secondly, many ceramic enterprises choose to reduce emissions; Nowadays, some enterprises recycle waste residue and produce glazed tiles, permeable tiles and other products through technological upgrading.
3. Large wastewater discharge
Ceramic wastewater mainly contains harmful pollutants such as lead, cadmium, zinc, iron and suspended particles of chemical raw materials. Some enterprises do not treat the wastewater thoroughly, resulting in certain pollution to the environment. Many enterprises have adopted the method of wastewater sedimentation tank to conduct centralized sedimentation treatment of sewage, and put the treated sewage into the production process for recycling. This method has the characteristics of high efficiency, speed and environmental protection, and can also effectively deal with the problem of wastewater discharge.