First, the diversity of forms. Through statistical analysis of water pollution emergencies in the past five years, it is found that the pollutants are diverse and the forms of water pollution incidents are also diverse. For example, the more common pollutants are industrial wastewater, chemical raw materials, and underwater plants; the more common forms of water pollution are water pollution caused by industrial wastewater discharge, leakage and pollution of water bodies during the transportation of industrial raw materials, and the plants in the water are greatly involved Waters infected. Because water resources can flow, flow fast, and cross-infection, there are many forms of water pollution emergencies.
Second, the suddenness that happened. Since it is called an emergency, it naturally occurs without warning. Neither experts nor precise equipment can accurately predict the time, place, cause, and impact of water pollution. At the same time, China still lacks effective Emergency legal system. Because of ignorance and uncontrollability, mass panic is fierce and may lead to more serious social unrest. Although science and technology are constantly developing, and the state's preventive measures against sudden water pollution are gradually improving, as small as a clump of seaweed or as large as a ton of industrial wastewater discharged may cause water pollution emergencies. Suddenness is therefore a prominent feature that cannot be ignored.
Third, the regularity of occurrence. By observing and summarizing water pollution emergencies in the past five years, it is recognized that there is a certain regularity. The more developed the economy, the more water pollution emergencies. This may be because the more developed the economy, the higher the degree of industrialization, the faster the urbanization process, the discharge of sewage and wastewater, and the transportation of industrial raw materials. Cause water pollution emergencies. Water pollution emergencies are an inevitable result of not paying attention to or covering up in the early stage. Looking at the statistical table, many pollutants are similar and pollution incidents are similar. If you can summarize the emergency disposal experience in time and respond to it in time, I believe that many similar types Events can be prevented from expanding or even happening.
Fourth, the arduousness of handling. At the beginning of the incident, our emergency measures were difficult to be accurate and perfect, and even some local governments were not eager to cover up the problem. With the uncontrollable pollution factors, the impact of water pollution is more serious, and subsequent disposal will be more difficult. There are many people in our country, and the customs and customs in different regions are different. The process of disposal is likely to result in economic constraints, local government exclusion, and non-cooperation by the enterprises being processed. In addition, the lack of professional emergency personnel will also increase the difficulty in handling water pollution emergencies.
Fifth, the severity of the harm. Water has fluidity. Pollutants will quickly diffuse in the water, and it is easy to produce chemical or physical reactions with substances in the water to generate new pollutants. It is even more likely to exacerbate the harm caused by raw water pollution emergencies. The restoration after the ecology is destroyed is not achieved overnight. Both the ecological restoration of the Yellow River and the cleanup of the Yangtze River are a long process that requires long-term investment of human and material resources. The harm of water pollution is not only a drinking water crisis, but also a waste of natural resources, a disrespect for nature, and irresponsibility for future generations.