Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Denitrification treatment device for modularized vertical subsurface flow constructed wetland

A technology of artificial wetland and vertical subsurface flow, applied in the direction of biological treatment devices, sustainable biological treatment, biological water/sewage treatment, etc., can solve problems such as hypoxia, porosity reduction, low maintenance requirements, etc., to improve reoxygenation and detoxification Nitrogen capacity, reducing difficulty and cost, and reducing the effect of construction difficulty

Inactive Publication Date: 2016-12-07
TONGJI UNIV
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, vertical subsurface flow wetlands should have a better oxygenation effect in theory, but due to the long-term operation of the wetland, the wetland internal matrix infiltration area increases, the porosity decreases, and a good aerobic environment cannot be created.
At the same time, the emergence of wetland blockage will further hinder the air exchange inside and outside the wetland, causing internal hypoxia and affecting the removal of organic matter and ammonia nitrogen.
Therefore, such common problems make it difficult to increase the pollution load of constructed wetlands, relatively increase the requirements for operation and maintenance, and limit the application
At present, the problem of eutrophication in rivers and lakes is prominent, and the state has put forward requirements for the total nitrogen index of sewage treatment. How to achieve a total nitrogen treatment rate of more than 50% in primary wetlands has become an urgent need in the application of vertical subsurface flow constructed wetlands. solved problem
In this regard, it is necessary to propose a technology that requires low maintenance while improving fundamental problems such as wetland blockage, insufficient oxygen supply, and low nitrogen removal efficiency.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Denitrification treatment device for modularized vertical subsurface flow constructed wetland
  • Denitrification treatment device for modularized vertical subsurface flow constructed wetland
  • Denitrification treatment device for modularized vertical subsurface flow constructed wetland

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A modular vertical subsurface flow artificial wetland denitrification treatment device treats distributed rural domestic sewage, the service object is three households, and the treated water volume Q3 -Nfigure 1shown. The bottom layer of the wetland is the saturated water catchment area 5, and the matrix in the saturated water catchment area 5 is melon seeds, with a height of 300mm; Place the melon seed slices, the particle size is 10mm. The upper layer of the basic module 4 is laid with a plant water distribution module layer composed of the plant water distribution module 3. Three perforated rubber hoses 6 are arranged in the plant water distribution module layer. They are made of natural rubber, and one end is connected to the water inlet pipe 1, and a pipe clamp is used Connect the hose to the hard tube and seal the other end. In order to ensure the uniformity of water distribution, a time-controlled switch is set on the water inlet pipe 1. The time-controlled swit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
compressive strengthaaaaaaaaaa
particle diameteraaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of environmental protection and particularly relates to a denitrification treatment device for a modularized vertical subsurface flow constructed wetland. According to the denitrification treatment device for the modularized vertical subsurface flow constructed wetland, a conventional constructed wetland is divided into different functional areas, such as a plant water distribution area, a reoxygenation area and an anoxic area. The division of these functional areas is performed through plenty of small modules, so as to facilitate construction, facilitate surface matrix replacement, facilitate aeration of a wetland system, improve wetland processing capacity and better facilitate follow-up maintenance of the wetland.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a modular vertical underflow artificial wetland denitrification treatment device. Background technique [0002] Constructed Wetlands is a sewage treatment technology developed in the late 1970s, which emerged in the United States, Australia, the Netherlands, Denmark, the United Kingdom and other countries. Its characteristics are: good effluent quality, strong organic matter and ammonia nitrogen treatment capacity, convenient operation and maintenance, simple management, low investment and operating costs. According to relevant data, the investment and operating costs of constructed wetlands only account for 50% to 80% of traditional secondary biochemical treatment technologies. Therefore, it is more suitable for small and medium-sized towns and villages with less funds, energy shortages and technical talents. [0003] However, some problems have gr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F101/16
CPCC02F3/32C02F2101/16C02F2203/006Y02W10/10
Inventor 李怀正徐祖信陈珂莉吴俊
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products