At present, with the constantly increasing of solid waste volume, it has become more difficult to thoroughly dispose waste. The traditional waste disposal methods include landfill, incineration and compost. However, as the requirements of sustainable development and recycling economy increase, these traditional waste treatment methods have exposed many disadvantages. For example, landfill usually can occupy much precious land, which can not only cause waste of utilization materials but also has led to serious environmental pollution; incineration is the fastest method to dispose wast, but it can cause secondary pollution, and there are a number of harmful components generating during burning process, which harm to people’ health. For all the time, every country has been specialized in researching waste separation technology. Beston Group, as one of the best solid waste management equipment manufacturers, has invented the comprehensive solid waste separation machine, which can realize the resourcing, harmlessness, rationalization of waste disposal. In addition, Beston waste recycling plant has lower investment, but higher economic profits.
Solid waste sorting technology
Beston waste sorting machine has adopted foreign advanced technology, and the machine has been equipped with the major sorting devices: roller screening machine and comprehensive winnowing machine. These two parts can be said the core of the machine. According the different sizes of wastes, our machine has been installed accordingly different devices. For example, the large size wastes will be directly picked out by manual sorting platform from the beginning, such as, furniture, house appliances, large wood branch, etc. Roller screening machine with many small holes can divided the waste mixtures into two different parts: the one part can be composted directly; the other part will be further processed by the comprehensive winning machine. This device can make sure 90% solid waste can be recycled, which has greatly increased the sorting efficiency.
As for the comprehensive winning machine, it mainly utilizes the density variation of solid waste, and the particle swarm will generate the looseness of the structure, migration and hierarchy under the function of gravity, power and mechanical force during the movement. Of cause, in addition to gravity, the winning machine also has used the wind power, the principle of wind power is similar with gravity. It mainly uses the air flow as medium. Under the function of air flower, the light wastes will be blown to other flow line, while the heavy materials will drop directly. In this way, it can separate waste mixture into three parts: heavy materials, such as earth and stone, metal, small size bricks, etc; secondary heavy materials, such as waste paper, waste rubber, waste shoes, waste textile materials, etc; combustible materials, such as wood, light waste plastic, etc. All of these end products have wide applications, and most parts can be further processed. For example, the organic materials can be composed directly or made into biogas; light waste plastic and waste rubber can be processed into fuel oil and carbon black by waste pyrolysis plant; earth and stone can be made into bricks to be used as construction materials.
According the the different countries, there are several factors need to be considered. Firstly, the technology; secondly, economy and finance condition; thirdly, environmental condition; fourthly, law and policy condition; finally, the local physical condition.
Waste sorting machine can replace the traditional solid waste disposal methods to thoroughly waste recycling. What’s more, it can realize green production, which has met the standard of sustainable development.