A composite shallow superposition plant growth module and its application

A plant growth, shallow layer technology, applied in the direction of climate change adaptation, sustainable biological treatment, biological water/sewage treatment, etc. Simple, high-efficiency processing

Active Publication Date: 2017-06-20
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a technical means of sewage treatment, constructed wetlands not only have good sewage treatment effects, but also have the advantages of less investment, simple process, low operating costs, and convenient management. However, there are also some shortcomings that restrict development: traditional artificial wetlands Wetland covers a large area and has a long hydraulic retention time

Method used

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  • A composite shallow superposition plant growth module and its application
  • A composite shallow superposition plant growth module and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a composite shallow superimposed plant growth module for sewage treatment artificial wetlands is divided into three layers on the vertical direction of the module with partitions 2. The partitions 2 are PVC boards, which are the first layer and the second layer respectively. The four sides of the module are fixed by pillars 1, which are made of relatively hard UPVC pipes, and the pillars 1 are surrounded by nylon mesh 3 with low resistance. Wetland plants are planted on each layer of the module; planted on the first layer of the module Watercress, watercress, water spinach and other self-floating plants 4; the second layer is planted with rushes, calamus and other aquatic plants with stable roots and long rhizomes 5, the plants pass through the side nets, and the roots are fixed on the partitions of the second layer The third layer is planted with reeds and other aquatic plants with well-developed oxygen-secreting capacity 6, the plants pass t...

Embodiment 2

[0025] Basically consistent with embodiment 1, the difference is that watercress and other self-floating plants 4 are planted on the first layer of the module; aquatic plants 5 with long root systems such as calamus are planted on the second layer; clapboard 2 adopts glass fiber reinforced plastics; COD Mn The removal rate of 77%, TP removal rate of 72%, TN removal rate of 89%.

Embodiment 3

[0027] Basically consistent with embodiment 1, the difference is that self-floating plants 4 such as water spinach are planted on the first layer of the module; the second layer is planted with roots such as cattails and other aquatic plants with stable roots and longer rhizomes 5; COD Mn The removal rate of 79%, TP removal rate of 73%, TN removal rate of 93%.

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Abstract

The invention discloses a composite shallow-layer superimposed plant growth module used for sewage treatment artificial wetlands, which is divided into three layers on the vertical direction of the module by partition boards, which are respectively the first layer, the second layer and the third layer; the module The four sides are fixed with pillars, and the pillars are surrounded by nets. Wetland plants are planted on each layer of the module; self-floating plants are planted on the first layer; aquatic plants with stable roots and long stems are planted on the second layer, and the plants pass through the side nets The root system is fixed on the partition of the second layer; the third layer is planted with aquatic plants with developed root system and strong oxygen-secreting capacity, and the plants pass through the side net, and the root system is fixed on the partition of the third layer. The invention also discloses the application of the module in sewage treatment. The three-layer wetland plants in the module of the invention rationally utilize the physical characteristics and living habits of different plants, and greatly improve the sewage treatment effect of the plants in the module. The invention can greatly save land and is suitable for purifying large-flow surface water.

Description

technical field [0001] The invention belongs to the technical field of constructed wetlands, water body ecological restoration and sewage treatment, and in particular relates to a composite shallow-layer superimposed plant growth module for sewage treatment constructed wetlands and an application thereof. Background technique [0002] Constructed wetlands are artificially constructed and regulated wetland systems that treat sewage through an optimized combination of physical, chemical and biological actions in the ecosystem. Constructed wetlands are generally composed of artificial substrates and aquatic plants growing on them, forming a substrate-plant-microbe ecosystem. When sewage passes through the system, pollutants and nutrients are absorbed, transformed or decomposed by the system, thereby purifying the water body. [0003] Constructed wetlands purify sewage mainly through three aspects: plant absorption, microbial decomposition and matrix adsorption, among which pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
CPCY02A40/22Y02W10/10
Inventor 宋海亮耿冰杨小丽
Owner SOUTHEAST UNIV
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