麻豆精品国产精华液好用吗,国产永久免费高清在线观看,日本大片电影,97视频热人人精品免费

Industrial waste refers to the solid waste discharged by the factory during the production process. Such as cutting debris, grinding debris, waste sand, etc. in the machinery industry, activated carbon residue and silicates in the food industry, waste fabrics and leather produced by the clothing industry. At present, the annual production of general industrial solid waste in China has exceeded 1.5 billion tons, of which resource utilization accounts for only a small part, and most of the industrial solid waste is dumped and discarded, buried or stored for future treatment. Due to the complex and diverse composition of industrial waste, high value-added materials, low value-added materials and completely worthless impurities mixed together, resulting in high value-added garbage and higher disposal costs, how to efficiently separate these materials with different added value from industrial waste has become a major difficulty in resource disposal.