Vertical flow constructed wetland sewage treatment device and system

A sewage treatment device and vertical flow wetland technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, anaerobic digestion treatment, etc., can solve the inability to achieve real-time adjustment and precise control of water level, and total nitrogen removal effect Limited, affecting the overall operation of the wetland system and other issues
CN112919637APending Publication Date: 2021-06-08XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Publication Date
2021-06-08

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Abstract

The invention relates to a vertical flow constructed wetland sewage treatment device and system. The vertical flow constructed wetland sewage treatment device comprises a vertical flow wetland unit and a water level adjusting unit, a filler matrix is arranged in the vertical flow wetland unit, a water distribution pipe is arranged above the filler matrix, and a water collecting pipe is arranged at the bottom of the filler matrix; a partition wall is arranged in the adjusting unit, a containing cavity is formed between the partition wall and the side wall of the vertical flow wetland unit, and one end of the water collecting pipe penetrates through the side wall of the vertical flow wetland pool and extends to the bottom of the containing cavity, so that sewage treated by the filler matrix flows into the containing cavity; an overflow structure for adjusting the highest liquid level of the vertical flow wetland is arranged on the partition wall, so that the highest liquid level of the vertical flow wetland is not smaller than the top surface of the filler matrix, or the highest liquid level of the vertical flow wetland is flush with the top surface of the saturated layer of the filler matrix. The highest liquid level in the filler matrix can be adjusted through the overflow structure, and a microbial nitrification-denitrification environment is created so that deep nitrogen removal of tail water is realized.
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Description

technical field

[0001] The disclosure relates to the technical field of sewage treatment, in particular to a vertical flow artificial wetland sewage treatment device and system. Background technique

[0002] As a collection and treatment unit of urban domestic sewage and industrial wastewater, sewage treatment plants have a significant effect on the reduction of organic matter, nitrogen, phosphorus and other pollutants in sewage. However, after upgrading and transformation, the effluent quality of most urban sewage treatment plants in my country is still much higher than the Class V standard of the "Environmental Quality Standards for Surface Water" (GB3838-2002), especially the total nitrogen (TN) is still at a high level. The direct discharge of tail water is still an important source of pollution to surrounding water bodies.

[0003] Constructed wetland is a sewage ecological treatment technology that has emerged in recent years. It can be used for deep purification of ta...

Claims

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