Water Treatment Development Process

In ancient times, humans at that time did not have advanced water treatment technology. In order to reduce the water transmission of diseases, they used simple grid interception and natural sedimentation methods for water treatment. Later, after years of observation and summarization, they also discovered a method to filter out fine suspended matter with sand, and then appeared pharmaceutical coagulation pretreatment. With the continuous progress of human civilization, the garbage produced by humans and the wanton destruction of the environment have led to serious pollution of water resources. When various infectious diseases spread through water, causing many people to get sick or die, people discovered how important water treatment is. It is also true that people gradually began to study water treatment technology.
Since the end of the 19th century, industrial technology has been greatly developed, and the generation of industrial sewage has doubled year by year. Moreover, the rivers and lakes of the industrial powerhouse at that time were also seriously polluted, gradually becoming social nuisances. Typical examples include the near-death of fish in the Thames River in the United Kingdom, the mass death of organisms in the Mississippi River in the United States, and the pollution of Minamata Bay in Kumamoto Prefecture, Japan, which caused bone pain in nearby residents. It has been found that simple chemical and physical methods are difficult to deal with these sewages, and it is impatient to develop new water treatment technologies. Scientists from all over the world have started to study water treatment methods. The earliest was sewage aeration test, then biofilm method, then artificial biological treatment method, and now targeted high-tech such as ion exchange method and electrochemical method. .
In the 1990s, with the idea of sustainable development, many countries also began to use the method of system engineering. Taking economic development and environmental protection into consideration, water treatment is not just about treating the already formed sewage, but controlling it from the source. Due to the rapid economic development in recent decades, people found that the traditional water supply treatment process has been difficult to meet the water demand of the society, so they began to apply biotechnology to the water supply process. Not only that, but with the emergence of the water resource crisis, the process of sewage reuse has become a point of concern. In order to improve water quality and improve the current environment, sewage treatment technologies such as land irrigation and oxidation ponds based on ecological principles have also been developed.