2024-05-24 45
The existing sewage treatment processes have problems such as high investment costs, high operating costs, high sludge production, unsatisfactory effluent discharge standards, and low regeneration and
2024-05-24 28
At present, the rapid development of the economy and excessive exploitation of land and forests can cause damage to the natural habitats of animals and plants, threaten the survival of wildlife, plant
2024-05-24 23
In recent years, with the rapid development of highways, railways, urban light rail, subways, and industry entering the machine age, it has brought great convenience to people's travel and improv
2024-05-24 29
The factors that harm the respiratory organs during the production process mainly include two categories: productive dust and productive chemical toxins. Any one or more concentrations of these two fa