River wastewater treatment system and river wastewater treatment method

Abstract

The invention discloses a river wastewater treatment system. A chemical settlement method, a biological restoration method and a physical adsorption method are combined, so that the wastewater treatment performance is reliable, the operation is stable, the maintenance cost is low and the long-term operation effect is significant. A mixing area is formed in a settlement area, a flocculating agent is fully mixed with wastewater firstly and then enters a gentle settlement area and the wastewater can be fully settled under the action of the flocculating agent; an impermeable layer is paved on the bottom surface of the gentle settlement area and can prevent settled pollutants from permeating an underlying channel along with water to cause underwater pollution and secondary pollution; a plant slow settlement area is arranged between the settlement area and a purification area, and sediments from the settlement area are further slowly settled and effectively prevented from entering the purification area under the action of plants; the purification area is provided with two stages of purification area, and a riverway of the purification area is set into an S form, so that the standing time of wastewater in the purification area is effectively prolonged and the full and effective purification effect can be achieved.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a river sewage treatment system and its application. Background technique [0002] With the rapid development of my country's industrialization and urbanization, especially the rapid growth of the national economy for many years, life [0003] The output of sewage and industrial waste water is increasing day by day. In the current water pollution is becoming more and more serious, the rivers and lakes in many cities have been polluted, the ecological balance of the water body has been seriously damaged, the water volume of the water source area has shrunk, and the water quality and water shortage have become an important reason for the water source crisis. Implement cross-basin water transfer to solve the problem of water pollution. At the same time, water body restoration technology has emerged as the times require. Water body restoration technologies mainly include...

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Problems solved by technology

At the same time, water body restoration technology has emerged as the times require. Water body restoration technologies mainly include physical methods, chemical methods, and ecological treatment methods. Compared with physical and chemical methods, ecological treatment methods have low cost and less secondary pollution. However, ordinary The ecological treatment method has the following disadvantages in the specific application: (1) the natural settlement method is adopted, the settlement speed is slow and the effect is poor, and most of the pollutants cannot be fully settled, which will increase the burden for the subsequent purification treatment; (2) the bottom of the settlement area has no prevention (3) There is no facility to stop the sedimentation between the sedimentation area and the purification area, and the sedimentation is easy to enter the purification area with the water flow , which increases the burden on the subsequent purification treatment; (4) The treatment effect is poor, the operation is unstable, and the long-term operation effect is not significant

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