摘要：In order to prevent and control water contamination, China has formulated many policies and laws, such as the Water Pollution Prevention and Control L 阅读全文

摘要：The prevention and control of water contamination should adhere to the principles of giving priority to prevention, protection, combination of prevent 阅读全文

摘要：Causes of water contamination：First, sea surface intrusion and backflow in coastal cities. The key reason leading to the intrusion of saltwater lake i 阅读全文