What are the environmental pollution problems around us in today's world?

Since I want to say it's right next to me, well, I study water treatment, so let's talk about water pollution first.

First, let's talk about the water we drink. Drinking water and drinking water problems are mainly the protection of water sources. At present, static agriculture has strict requirements on the access of chemical fertilizers and pesticides, the development of aquaculture and the discharge of pollutants. However, the law enforcement needs to be strengthened, and the drinking water in China is required to be above Class III water. Many cities use polluted rivers (Huaihe River, Yangtze River, etc.). There is no separate drinking water source. There are also eutrophic lakes (such as Taihu Lake next to Wuxi), which are threatened by water shortage due to pollution incidents (such as the Taihu Lake bloom incident last year and the Songhua River pollution incident). Drinking water in foreign countries is generally the standard of Class I water, and it is generally direct drinking water, that is, water that can be drunk directly without boiling. Only a few high-end residential areas in China have relevant equipment to provide direct drinking water. Then tap water treatment has two pollution problems. One is that PAC (polyaluminum chloride) is generally used for coagulation and precipitation. The existing research shows that aluminum salt can cause Alzheimer's disease, but the cost of substitute products is too high, so it will not be used in China. The other is that chlorine used for disinfection will react with humic acid in water to generate carcinogens, which is a helpless move and involves the water quality of water sources.

Secondly, the water we use every day, such as bathing, washing clothes, washing vegetables and flushing toilets. These are domestic sewage. Generally speaking, the daily water consumption per person in a city is 150L/ day, and a city still produces a lot of sewage. How to deal with so much sewage is directly in front of us. If the total treatment capacity of a city's sewage treatment plant can't reach the amount of sewage generated by the city, where will the sewage go? This is why Shanghainese drink the foot-washing water from Kunming, so if people in economically developed areas don't want to drink foot-washing water, you can help your upstream cities to treat sewage. Even the existing sewage treatment plants in this city still have many problems, such as whether they are running at full capacity, whether they are running normally and so on. People don't pay attention to it, funds are not in place, and scientific and technological support can't keep up. Many sewage treatment plants are in semi-normal working condition, not to mention so many small cities without sewage treatment plants. There is also the problem of saving water. If each person saves 10L of water every day, how much can a city's sewage be reduced?

What's more, many things we use are accompanied by a lot of pollutants in the production process, such as notebooks, which will produce a lot of pollutants in the paper making process, especially those small paper mills, which are directly smuggled and discharged into the water we usually drink. Why are the notebooks produced by large paper-making enterprises relatively expensive, and part of the cost is on the investment of environmental protection equipment, not to mention the difference in quality? When we buy cheap books, we are actually conniving at those small paper mills endangering our lives. When we buy good books, part of the extra money we spend is contributing to the environment. It's just that those small factories disappear, and the harm to the environment is reduced, and the price of things will still come down. It also includes clothing, and there are many pollutions in the production process, such as printing and dyeing wastewater, chemical wastewater (many clothes are made of chemical fiber now) and electroplating wastewater of electronic products. . . . Many, many, many links will produce a lot of pollution. Our concern is to reduce unnecessary waste while supporting large environmental protection enterprises (through ISO 14000).

Let's talk about other pollution, air pollution, and fuel combustion, coal stoves, heating chimneys, automobile exhaust have a lot to do. . . . What we can do is to support some energy-saving policies of the country, improve the Euro V emission standards and reduce the use of public transport by private cars. Everyone said a lot.

Noise pollution, first of all, traffic noise, planes flying overhead. . . You live on the side of the road, and it's hard at night. After all, the function of the noise shield is limited, and loud noise in public places will make others upset, and so on.

The pollution of solid waste is obvious. Garbage is produced in large quantities every day, and it is also very troublesome to deal with it. Some cities want to learn from foreign practices and carry out classified collection. The difference between people's support and action always makes related equipment a decoration, which is a quality problem.

Other pollution is far from us, so let's talk about it. As for my personal opinion, I hope that the environmental protection courses offered to primary school students now will make the next generation truly aware of these problems and strictly implement them. Quality problems and people's problems are the basis to solve everything. Harmonious society, people-oriented, hehe!

If you want to know about the environmental problems in Shandong, you can go to the website of www.sdein.gov.cn, Shandong Environmental Protection Bureau, and look at the annual bulletin under the column of environmental bulletin. My personal opinion is still above, because the environmental problems in the whole country are the same thing. It's just a little China, and it's more messy than others.