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Method for processing town sewage using composite vertical current artificial marshland and apparatus thereof

A technology for constructed wetlands and domestic sewage, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of large water head loss, can not be used, affect the denitrification efficiency, etc., to achieve nitrification capacity and Enhanced denitrification capacity, large resistance, and good filtration effect

Active Publication Date: 2009-03-18
SOUTH CHINA AGRI UNIV
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Problems solved by technology

[0005] The disadvantages are: (1) Downstream-Upstream and Downstream-Downstream have a large head loss; (2) When the water level difference between the pretreatment pool and the downstream pool does not meet the requirements, the Downstream-upstream and downstream-downstream composite systems cannot be used; (3) In the two composite systems, the first pool is artificially arranged to undertake nitrification, and the second pool undertakes denitrification, so that in the downstream -In the upstream composite system, the denitrification of the second pond lacks carbon sources, which affects the nitrogen removal efficiency of the entire system

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  • Method for processing town sewage using composite vertical current artificial marshland and apparatus thereof
  • Method for processing town sewage using composite vertical current artificial marshland and apparatus thereof
  • Method for processing town sewage using composite vertical current artificial marshland and apparatus thereof

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Embodiment Construction

[0032] In this example, the composite vertical flow artificial wetland is used to treat urban domestic sewage, and the process flow is as follows figure 1As shown, the urban domestic sewage is lifted by the pump room into the primary sedimentation tank to remove sand and suspended particulate matter in the sewage, and then enters the first-level vertical upward flow artificial wetland, where the sewage seeps vertically upwards and passes through the first-level vertical upward flow artificial wetland Most of the pollutants in urban domestic sewage are removed through the filtration interception and adsorption of the filler and filter cloth layer and the uptake of plant roots. Then, using the drop between the two vertical upflow artificial wetlands, the first vertical upflow artificial wetland The effluent from the wetland pool enters the second-stage vertical upflow constructed wetland, and the sewage treatment process of the second-stage vertical upflow constructed wetland is ...

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Abstract

This invention discloses a method and a device for the treatment of urban domestic sewage by composite vertical current constructed wetlands. The method connects two levels of vertical upstream current constructed wetlands in series for the treatment of urban domestic sewage; firstly, the urban domestic sewage enters a primary sedimentation tank, and enters a level I vertical upstream current constructed wetland and a level II vertical upstream current constructed wetland in sequence after pre-sedimentation; the ultimate effluent can be used for agricultural irrigation or be discharged into rivers. The invention, which connects the two levels vertical upstream currents in series for the treatment of urban domestic sewage, are characterized by powerful detergency, strong nitrification and denitrification capacity, little water potential loss and low energy-consumption requirement; accordingly, the required falls of water between the pretreatment tank and the level I constructed wetland and between the two levels of constructed wetlands are small. The method of the invention can utilize the composite vertical upstream currents to efficiently improve the resistance to the external temperature impact and keep satisfactory effect of removing contaminants in winter. The device is simple in structure, which is helpful for large-scale promotion.

Description

technical field [0001] The invention relates to a domestic sewage treatment method and a device thereof, in particular to a method and a device for treating urban domestic sewage by using a composite vertical flow constructed wetland. Background technique [0002] At present, the treatment methods of composite vertical flow constructed wetlands for urban domestic sewage are mainly the composite system of downflow and upflow and the composite system of downflow and downflow. [0003] Composite system of downflow and upflow: It is composed of a downflow pool and an upflow pool. There is a partition wall between the two pools, and the bottom is connected. The height of the bed is 50-60cm. In the center of the surface of the descending pool is a perforated water distribution pipe with small holes drilled in the lower half, so that the water inflow can be evenly distributed to the surface of the wetland. The water in the upward pool, the upward pool uses the "H" type pipeline co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 崔理华余志敏朱夕珍刘蜀治朱文玲
Owner SOUTH CHINA AGRI UNIV
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