The sewage treatment of Putian Water Group is managed by the local water affairs bureau. When treating sewage, chemical reactions can be used to treat or recover dissolved or colloidal substances in sewage, which are mostly used in industrial wastewater, such as coagulation, neutralization, redox, ion exchange and so on. Although the chemical treatment method is effective, it is expensive, and it is often used in the effluent after biochemical treatment to improve the effluent quality. Formerly known as the Water Conservancy Bureau, the Water Affairs Bureau is the water administrative department of the government, which is mainly responsible for the construction management of water conservancy projects, flood control and drought relief, and water resources management. , and is responsible for the development, utilization, conservation, protection and management of water resources in the management area.