How to deal with used household appliances and what are the common solutions?
Waste household appliances contain a large number of toxic, harmful and dangerous substances, mainly including lead, cadmium, mercury, hexavalent chromium, aluminum, brominated flame retardants, Freon, PVC plastics, etc. Several major harmful substances and their hazards in waste household appliances are listed in Table 1-1. In addition to this, household appliances also contain other heavy metals and halogen chemicals such as zinc, silver, zirconium, nickel, etc. If used household appliances are discarded at will or disposed of improperly, they will become “environmental killers” that harm the human living environment, polluting soil, water sources, air, animals and plants, and are harmful to human health. There are currently two main methods for disposing of used household appliances on the market:
One is to dismantle and subdivide large pieces of garbage through manual disassembly, which can be divided into wood, metal (mainly mattress springs), sponge, fabric and leather. Leather and fabric that cannot be recycled are usually After being crushed and burned, the wood and sponge can be packaged and transported for sale, while the metal is sent directly to the scrap steel processing plant for sale. The disadvantages of this method are high labor costs and low disassembly efficiency. The advantages are relatively clean disassembly and high resource utilization.
The other method is to use a household appliance shredder to crush all the materials uniformly, then separate the metals through magnetic separation, and all the remaining materials are transported out for incineration. The advantages of this method are capacity reduction, fast processing speed, and high efficiency. The disadvantage is low resource utilization. So is there a better way that can not only save labor but also achieve higher resource utilization? The answer is yes.
The third way is to connect multiple home appliance shredders in series, that is, to build a home appliance waste production line disposal system to be as small as possible, and then use a sorting machine to separate sponges, fabrics, wood, and metal. and fabrics can be separated by another sorting machine, and wood and metal can be separated by a magnetic separator. In this way, we can get four recyclable materials, which not only achieves mechanized and fully automatic disposal, but also reduces labor costs. , and improved the processing speed and processing volume, achieving an improvement in resource utilization.
