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Wastewater treatment system based on constructed wetlands

A sewage treatment system and artificial wetland technology, applied in water/sewage treatment, biological water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as difficult to eliminate heavy metal pollution, reduce the workload of sewage treatment system, etc., to achieve The effect of preventing bending, increasing the service life, and increasing the inflow of sewage

Active Publication Date: 2017-01-25
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects or deficiencies in the prior art, the present invention innovatively proposes a sewage treatment system based on constructed wetlands, which strengthens the nitrogen and phosphorus removal efficiency of the constructed wetland sewage treatment process, and solves the problem of the traditional constructed wetland sewage treatment process. It is difficult to eliminate the problem of heavy metal pollution, and at the same time, it reduces the workload of post-maintenance of the sewage treatment system

Method used

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  • Wastewater treatment system based on constructed wetlands
  • Wastewater treatment system based on constructed wetlands
  • Wastewater treatment system based on constructed wetlands

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] as attached Figure 6 As shown, the bottom of the wetland box is provided with a water inlet pipe 8 for injecting sewage into the wetland box, and one end of the water inlet pipe 8 is fixedly connected with a seepage pipe 9, and the seepage pipe 9 is laid on the bottom of the wetland box in a serpentine shape. At the bottom, the seepage pipe 9 is drilled with small holes 14 at intervals of 40cm-50cm, which increases the laying amount of the seepage pipe 9 at the bottom of the wetland box body and the inflow of sewage.

Embodiment 2

[0039] as attached Figure 7 and 8 As shown, the wetland cabinet can be set as a drawer-type sealed cabinet, and a plurality of drawer layers 20 with placement cavities are arranged in the wetland cabinet, and the number of drawer layers 20 is set to at least six, and each drawer layer 20 can be placed separately Different filter substrates for purifying sewage, multiple drawer layers 20 are respectively placed with large bluestone 2, small gravel 3, fine sand 4, modified zeolite 5, nanocomposite material 6, and soil layer 7 from top to bottom; wetland The inside of the cabinet is equipped with slide rails, and the drawer layer is provided with a pulley 21 that slides in conjunction with the slide rails for pulling out or pushing the drawer layer 20. Using a drawer-type wetland cabinet, each filter matrix can be placed separately , to avoid the mixing of various filter substrates, which is beneficial to the later maintenance of the wetland box and reduces the difficulty of la...

Embodiment 3

[0042] as attached Figure 9 and 10 As shown, a deflector 27 is provided at the middle and lower part of the wetland cabinet, and the deflector 27 divides the wetland cabinet into a water inlet chamber 28 and a filter chamber 30 from bottom to top. The water inlet pipe; a variety of filter substrates are laid in the filter cavity, and the multi-layer filter matrix in the filter cavity is laid with large pieces of bluestone, small gravel, fine sand, modified zeolite, nanocomposite materials and soil layers in sequence from bottom to top; The top of the wetland box is provided with an outlet pipe for discharging the treated water from bottom to top through a variety of filter media from the wetland box and collecting it; The guide hole 29 of the filter chamber 30.

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Abstract

The invention discloses a wastewater treatment system based on constructed wetlands. The wastewater treatment system based on constructed wetlands comprises wetland plants, a sealed wetland tank and a water inlet pipe, wherein multiple filtration matrixes are laid in the sealed wetland tank; wastewater flows through each layer of filtration matrixes in the wetland tank so as to be purified; the water inlet pipe is used for injecting the wastewater into the wetland tank; a water seepage mechanism which is communicated with the water inlet pipe and is used for conveying the wastewater into each layer of filtration matrixes in the wetland tank in sequence is arranged at the bottom of the wetland tank; and a water outlet pipe, through which water obtained after treating wastewater which flows through the filtration matrixes at the bottom layer in sequence, permeates through and is filtered to the filtration matrixes on the top layer flows out of the wetland tank, is arranged on the top of the wetland tank. The wastewater treatment system based on constructed wetlands has the beneficial effects that the nitrogen and phosphorous removal efficiency of a constructed wetland wastewater treatment technology is intensified, the problem that the traditional constructed wetland wastewater treatment technology is less likely to eliminate heavy metal pollution is solved, and meanwhile, the workload of later period maintenance of the wastewater treatment system is reduced.

Description

technical field [0001] The invention relates to the technical field of artificial wetland sewage purification and treatment systems, in particular to a sewage treatment system based on artificial wetlands. Background technique [0002] Constructed wetland is a ground similar to swampland that is artificially constructed and operated under control. Sewage and sludge are distributed to the artificially constructed wetland in a controlled manner. When sewage and sludge flow in a certain direction, they are mainly used It is a technology for treating sewage and sludge through the triple synergy of physics, chemistry and biology of soil, artificial medium, plants and microorganisms. Its mechanism of action includes adsorption, retention, filtration, redox, precipitation, microbial decomposition, transformation, plant shading, residue accumulation, transpiration of water and nutrient absorption, and the action of various animals. Constructed wetland is a controllable wetland syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/20
CPCC02F1/001C02F1/281C02F3/32C02F9/00C02F2101/105C02F2101/16C02F2101/20C02F2301/08C02F2305/08C02F2305/10
Inventor 崔育倩魏玉西谢文霞杨瑞霞曾倩
Owner QINGDAO UNIV
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