2, environmental protection laws, regulations and ordinances: such as environmental protection law in the sewage charging system, three simultaneous system. Also know where these laws are used.
3, some of the policies of environmental protection: such as what is called ecological civilization, the total reduction of major pollutants, the first census of pollutants, etc., on the environmental protection departments at all levels of the website to see what there are some of the dynamics of environmental protection and so on.
4, environmental standards. For example, environmental monitoring will involve a lot of standards, environmental quality standards, pollutant emission standards, there are basic standards for pollutant monitoring (national standards), to COD, BOD and ammonia nitrogen, these three things to get familiar with.
5, understand some of the actual work of environmental protection. For example, sewage treatment plants, China's current common methods, domestic sewage and industrial sewage in the method of what is the difference between the sewage treatment capacity to how much to match the sludge pressure drying equipment, sewage treatment and sludge between the proportion of the relationship. And so on