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Subsurface flow constructed wetland system capable of switching between series connection and parallel connection

A technology of artificial wetland system and subsurface wetland is applied in the field of combination mode of subsurface artificial wetland sewage treatment system, and achieves the effects of large improvement space, saving land occupation and investment, and strong purification ability.

Inactive Publication Date: 2021-08-06
POWERCHINA HUADONG ENG COPORATION LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Xi Beidou of the Chinese Academy of Environmental Sciences and others used a winter heat preservation device for constructed wetlands, which can realize the conversion of vertical subsurface flow and horizontal subsurface flow wetlands, and the conversion of the series-parallel relationship between wetland units is rarely involved.

Method used

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  • Subsurface flow constructed wetland system capable of switching between series connection and parallel connection
  • Subsurface flow constructed wetland system capable of switching between series connection and parallel connection
  • Subsurface flow constructed wetland system capable of switching between series connection and parallel connection

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Embodiment Construction

[0019] The subsurface flow artificial wetland system of the present invention is composed of a plurality of subsurface flow wetland units.

[0020] The subsurface flow wetland unit of the present invention adopts the horizontal flow or vertical flow mode, and the water distribution adopts pipes or gabions. The processing units in the wetland can be equipped with different fillers in layers. The fillers can be materials such as zeolite, gravel, limestone, steel slag, and activated carbon. It can be assembled separately or in combination, and there are ventilation pipes distributed in the vertical flow wetland.

[0021] One side of the water distribution channel of the wetland unit is connected to a water inlet pipe; the other side uses a gabion to distribute water to the subsurface wetland unit; the subsurface wetland flows out of the gabion on the other side to the wetland unit collection channel, and the other side of the collection channel is connected to an outlet pipe, and,...

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Abstract

The invention provides a subsurface flow constructed wetland system capable of switching between series connection and parallel connection. The system comprises a plurality of subsurface flow wetland units, and each subsurface flow wetland unit is provided with an independent water inlet system and an independent water outlet system; a controllable water inlet valve and a controllable water outlet valve are respectively arranged on the water inlet system and the water outlet system; connecting pipes are arranged between the subsurface flow wetland units with the upstream and downstream relationship as well as between the water outlet system of the upper-stage subsurface flow wetland unit and the water inlet system of the lower-stage subsurface flow wetland unit, and controllable communicating valves are arranged on the connecting pipes; and the water heads of the water inlet systems are higher than that of the connecting pipe, and the water head of the connecting pipe is higher than those of the water outlet systems. Through adjustment of the control valves, mutual conversion of series connection and parallel connection of the wetland purification units is carried out, the defect that the purification function of the wetland purification units cannot be fully played is overcome, and the operation mode of the wetland treatment units is flexibly selected according to the wetland inflow water quantity.

Description

technical field [0001] The invention relates to a sewage treatment device, in particular to a combination mode of an underflow artificial wetland sewage treatment system. Background technique [0002] Different from general sewage treatment constructed wetlands or tail water treatment constructed wetlands, the design boundary conditions of micro-polluted water purification wetlands in rivers are complex, and there are seasonal changes in influent water volume, water quality, and water temperature. In addition, due to the large amount of water in the river, the scale of the constructed wetland for purifying river water is also large. In order to avoid the short flow and stagnation of internal water flow caused by too large a wetland unit, the river water purification constructed wetland treatment unit generally adopts an overall parallel combination. Due to seasonal changes in water quality and water volume, in order to ensure the purification effect of wetlands, artificial w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCC02F3/32C02F2203/006
Inventor 宋凯宇章粟粲魏俊陈奋飞吕丰锦
Owner POWERCHINA HUADONG ENG COPORATION LTD
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