WST (Waste Solutions Technology) water-based garbage classification device
In the opinion of the inventor of the WST water-based garbage classification device, "garbage is also a treasure, it depends on how you use it."
Solving the problem of garbage classification
It is understood that the WST system mainly uses the water specific gravity method to control the depth and flow rate of water flow, etc., and classify light, heavy, large, small, soft, hard, etc. Dry and wet domestic waste are automatically classified according to specific gravity. If we hand over 20 tons of municipal solid waste to a WST water-type waste sorting device, the device can completely subdivide the waste in one hour. It can separate common waste such as cans, plastic bottles, Plastic bags, foam lunch boxes, etc. are divided into one category, shoes, old clothes, etc. are divided into another category. Even waste batteries, bricks, wood blocks and other debris can be clearly separated.
Garbage classification is the first step in garbage recycling, and trash cans refuse to be "one-size-fits-all." Using the words "recyclable garbage" and "non-recyclable garbage" to remind people to sort their garbage is the first step. , after that, more detailed sorting will be carried out at sanitation stations or recycling outlets, and the whole process is time-consuming and labor-intensive.
It is understood that this manual method is currently used internationally and domestically to classify garbage.
An environmental protection expert said that due to the diversity and complexity of the components of modern domestic waste, the classification and processing of municipal waste is a global problem.
At present, urban domestic waste is all-encompassing, especially every household will produce garbage containing food waste, and kitchen waste is a substance with high moisture content and oil pollution. After these garbage are collected and compressed by garbage compression stations or compressed garbage trucks, the moisture and oil in the kitchen waste will be dispersed in large quantities, turning many other dry garbage into substances containing moisture and other ingredients, making it difficult to classify or classify the garbage. The only way to restore it is to landfill or incinerate it, and landfill and incineration have the risk of causing secondary pollution.
Yang Zhiwei, chairman of Yangtze Electromechanical, said in an interview with this reporter that the WST device can process 500 tons of domestic waste every day. After careful classification, more than 80% of the materials can be classified separately as resources. Processing or recycling greatly improves the efficiency of direct waste recycling.
Yang Zhiwei also emphasized that the WST garbage sorting device can not only help turn waste into treasure, but is also environmentally friendly. The water used in the device can be recycled without being discharged. There is no residual residue during the treatment process and there is no secondary waste. pollute.
In 2003, the WST moisture and waste classification device passed the scientific and technological appraisal by the Jiangsu Provincial Department of Science and Technology, obtained the appraisal certificate, and was rated as a new technology that "fills the market gap and leads the world".
It is reported that this technology has obtained invention patent rights in the United States, the European Union, Australia and other countries, and obtained the world patent priority (PCT) in 2004.