Secondly, in the current political environment, no one will take the initiative to admit the harm they have caused to this social environment. The production and treatment capacity of industrial solid waste will directly affect the promotion of officials and the development of enterprises. It goes without saying that they are all the emperor's new clothes.
Finally, to be fair to these government units and enterprises from a personal point of view, it is not that these people are dishonest, but that our country does not have some suitable methods to deal with solid waste at present. For example, zinc-containing secondary resources (HW23) include pyrometallurgical method and wet method. The recovery rate of pyrometallurgical rotary kiln is not ideal, and there is secondary pollution, which belongs to the situation of restricting new construction and gradually banning. The acid method in wet process has no economic treatment ability for zinc ash with complex components, and there are problems of limited production capacity, so general enterprises will not do it. At present, the reselling of zinc ash in the market is generally sold to pyrometallurgy, which still contributes to the smog. At present, the production technology of alkaline zinc developed by Professor Zhao Youcai of Tongji University has passed the pilot test in Changchun FAW. There is an ideal treatment method for zinc-containing secondary resources with complex components, but it has not been recognized by the solid waste treatment center of the Ministry of Environmental Protection. Once approved, it should be promoted to the market. With guidance technology, this resource can report data blatantly in the future, which is nothing more than the processing capacity of subsequent factories.
Personal opinion, don't spray if you don't like it, thank you!