The demand for sewage treatment is still 'urgent'

The overall water quality in our country is still not optimistic. In fact, it has been like this for a long time. Although great progress has been made in sewage treatment methods, there are still problems, and the demand for sewage treatment is still 'urgent'. how to say? In this article, let's make a simple understanding together! In fact, to put it simply, the process of industrialization has affected the quality of water resources. With the advancement of our urbanization and the continuous development of the economy and society, the self-purification capacity of the water body has been exceeded, so the discharge will seriously damage the natural water body. As a result, water quality-based water shortage has become an important concern in our country! Analyze water quality problems from a few days. 1. The current situation of surface water quality in our country is not ideal. Here is a brief understanding of the relevant data of surface water in 2019 and 2020. In 2019, among the 1,931 water quality sections monitored for surface water quality in my country, water quality sections from I to III accounted for 74.5%; while those inferior to category V accounted for 3.4%; There is an upward trend in the category section, and a downward trend in the inferior V category, which can be regarded as some progress, but there is still a sense of urgency in the governance needs by 2021! 2. Make a simple understanding of the overall water quality of the basin. In 2020, the proportion of sections with water quality I to III in the Yangtze River, Yellow River, Huaihe River and other basins is 87.4%, while the proportion of sections inferior to Category V is 0.2%. . The main pollutants are COD (chemical oxygen demand), permanganate index and so on. 3. Then there is the situation of groundwater, which is not optimistic on the whole. Compared with surface water, there is an obvious gap. Some indicators exceeding the standard include heavy metals (manganese, iron, etc.), total hardness, ammonia nitrogen, sodium, chloride, sulfate, etc. Therefore, in the face of this situation, we are still very urgent in terms of sewage treatment needs, and sewage treatment (including online monitoring of water quality) is an important part of it! In general, it is necessary to pay attention to solving water quality problems in a timely manner to ensure that water quality is beneficial to our health and social and economic development!
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