Artificial wetland treatment system for diversion and purification of river at lake inlet in northern area

Abstract

The invention, aiming at the defects of a conventional artificial wetland technology for a riverway, provides a combined artificial wetland treatment system capable of being used for the riverway at a lake inlet in a low-temperature northern area. The system comprises a damming water region, a water draining region and a combined artificial wetland system. Wetland can be used in the northern area all the year round, and the problem that the wetland cannot be used in winter in the northern area due to low air temperature is solved.

Description

technical field [0001] The invention belongs to the technical field of artificial wetland treatment, and in particular relates to an artificial wetland treatment system suitable for diversion and purification of rivers entering lakes in northern regions. Background technique [0002] In recent years, with the rapid development of my country's national economy, environmental pollution and its associated problems have become increasingly apparent. The survey shows that the pollution of all kinds of rivers in the country is becoming more and more serious. By the end of the 20th century, more than half of the river sections have water quality of IV, V or even worse than V, which seriously aggravates the shortage of water resources in my country and restricts the sustainable development of the economy. People's lives and health constitute a great hazard. [0003] For the treatment of polluted rivers, sediment dredging is an effective method to directly remove endogenous polluti...

AI Technical Summary

Problems solved by technology

[0015]Disadvantages of existing constructed wetland systems:

[0016]1) Due to the blocking effect of wetland plants, river constructed wetlands cannot solve the contradiction between flood discharge and purification treatment operation, and wetland plants affect flood discharge during flood periods;

[0017]2) After a period of operation, wetlands generally have blockage problems, which reduces their purification efficiency;

[0018]3) Plants in northern wetlands die, rot and decompose in winter, causing secondary pollution and affecting water quality;

[0019]4) The investment of manpower and material resources is relatively large, and the management cost is relatively high

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