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A method of using two-stage vertical subsurface flow constructed wetland to strengthen the treatment of wastewater containing ppcps

A constructed wetland and vertical subsurface flow technology, applied in chemical instruments and methods, multi-stage water treatment, biological water/sewage treatment, etc., can solve the problem of unsatisfactory treatment effect, low degradation rate of PPCPs, and low utilization rate of wetland plant waste. and other problems to achieve the effect of reducing energy consumption, reducing resistance, and improving utilization

Active Publication Date: 2021-10-12
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when traditional constructed wetlands are directly applied to treat wastewater containing PPCPs, the treatment effect is not ideal, the degradation rate of PPCPs is not high, and there is a problem of low utilization rate of wetland plant waste.

Method used

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  • A method of using two-stage vertical subsurface flow constructed wetland to strengthen the treatment of wastewater containing ppcps

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The method for intensively treating waste water containing PPCPs by adopting the two-stage vertical submerged flow constructed wetland in the present invention includes the following steps: the waste water containing PPCPs enters the first-stage reaction system from the water inlet pipe 5, and is evenly distributed by the first water distribution device 2 Flowing downward, the waste water passes through the sand matrix layer, iron ore packing layer 10 and gravel supporting layer of the primary reaction system in turn, and then enters the secondary reaction system through the connecting pipe 6 under the action of gravity flow, and enters the secondary reaction system The waste water flows downwards after being evenly distributed by the second water distribution device 4, and the waste water is discharged through the outlet pipe 7 after passing through the sand matrix layer, the iron-carbon filler layer 12 and the gravel support layer of the secondary reaction system succes...

Embodiment 2

[0027] The method for intensively treating waste water containing PPCPs by adopting the two-stage vertical submerged flow constructed wetland in the present invention includes the following steps: the waste water containing PPCPs enters the first-stage reaction system from the water inlet pipe 5, and is evenly distributed by the first water distribution device 2 Flowing downward, the waste water passes through the sand matrix layer, iron ore packing layer 10 and gravel supporting layer of the primary reaction system in turn, and then enters the secondary reaction system through the connecting pipe 6 under the action of gravity flow, and enters the secondary reaction system The waste water flows downwards after being evenly distributed by the second water distribution device 4, and the waste water is discharged through the outlet pipe 7 after passing through the sand matrix layer, the iron-carbon filler layer 12 and the gravel support layer of the secondary reaction system succes...

Embodiment 3

[0033] The method for intensively treating waste water containing PPCPs by adopting the two-stage vertical submerged flow constructed wetland in the present invention includes the following steps: the waste water containing PPCPs enters the first-stage reaction system from the water inlet pipe 5, and is evenly distributed by the first water distribution device 2 Flowing downward, the waste water passes through the sand matrix layer, iron ore packing layer 10 and gravel supporting layer of the primary reaction system in turn, and then enters the secondary reaction system through the connecting pipe 6 under the action of gravity flow, and enters the secondary reaction system The waste water flows downwards after being evenly distributed by the second water distribution device 4, and the waste water is discharged through the outlet pipe 7 after passing through the sand matrix layer, the iron-carbon filler layer 12 and the gravel support layer of the secondary reaction system succes...

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Abstract

The invention discloses a method for intensively treating wastewater containing PPCPs by adopting two-stage vertical submerged flow constructed wetlands, and belongs to the technical field of wastewater treatment. The method comprises the following steps: the waste water containing PPCPs enters the first-stage reaction system from the water inlet pipe, and is evenly distributed by the first water distribution device, and then flows downward, and the waste water passes through the sand matrix layer and the iron ore filler of the first-stage reaction system successively. layer and gravel supporting layer, under the action of gravity flow, enters the secondary reaction system through the connecting pipe, and the wastewater entering the secondary reaction system flows downward after being evenly distributed by the second water distribution device, and the wastewater passes through the secondary reaction system in turn. The sand matrix layer, iron-carbon filler layer and gravel support layer of the system are discharged through the outlet pipe. The method of the invention has a high degradation rate of PPCPs in wastewater, can greatly reduce the concentration of PPCPs in effluent, improve the effect of effluent, and can also improve the utilization rate of wetland plant waste.

Description

technical field [0001] The invention relates to a method for treating waste water containing PPCPs, in particular to a method for intensively treating waste water containing PPCPs by adopting a two-stage vertical underflow artificial wetland, and belongs to the technical field of waste water treatment. Background technique [0002] PPCPs is the abbreviation of pharmaceuticals and personal care products. It is a large class of pollutants widely present in the natural environment. This kind of pollutants can exist stably in nature and is difficult to biodegrade, and eventually cause harm through biological chain enrichment, and this While being removed, such pollutants are continuously introduced into the environment, also known as "pseudo-persistent" pollutants. Therefore, how to efficiently remove PPCPs in degraded water bodies is an urgent problem in environmental protection work. At present, chemical methods are generally used to treat PPCPs in water bodies. Although chem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F101/36
CPCC02F3/32C02F2101/363C02F2301/08
Inventor 周雪飞张亚雷陈家斌徐娇杨黎彬
Owner TONGJI UNIV