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

An ecological restoration method of urban rivers and lakes based on the new restoration model of "mud first and water later"

A restoration mode and ecological restoration technology, applied in the field of environmental engineering, can solve the problems of long restoration time of the ecosystem at the bottom of the river and the inability to quickly improve the urban black and odorous river, so as to improve the water quality of rivers and lakes, reduce the load of endogenous pollution, and improve the The effect of water environment quality

Active Publication Date: 2022-08-05
PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is still an urgent need for an in-situ restoration of river sludge and a micro-ecological reconstruction method to solve the problems that the existing technology cannot quickly improve the water quality of black and odorous rivers in cities and the long recovery time of the ecosystem at the bottom of the river

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
  • An ecological restoration method of urban rivers and lakes based on the new restoration model of "mud first and water later"
  • An ecological restoration method of urban rivers and lakes based on the new restoration model of "mud first and water later"
  • An ecological restoration method of urban rivers and lakes based on the new restoration model of "mud first and water later"

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The present embodiment is the in-situ bio-enhanced treatment technology of polluted bottom sludge under anaerobic environment is as follows:

[0059] The experimental river A in a city in southern my country has been in the state of black and odorous water for a long time. The depth of local sediment reaches 20cm, the odor is obvious, the aquatic fish is scarce, and the surrounding residents react strongly. Using the SedCaN material of the present invention to carry out in-situ sediment treatment and water quality improvement, the main implementation steps are as follows:

[0060] (1) Stable hydraulic conditions. The application of SedCaN particles has two requirements on the hydraulic conditions of rivers and lakes. One is to limit the water flow conditions of the river, and to control the erosion of the surface sediment by the water flow, so as to provide conditions for the stable decontamination effect of SedCaN particles, and to ensure the treatment efficiency of se...

Embodiment 2

[0069] This embodiment is an in-situ contaminated sediment restoration technology in the mode of "mud first, then water", and the details are as follows.

[0070] The experimental river channel B in a city in southern my country is a "dead end gushing" adjacent to the old city and the vegetable market. The length is about 600m, the average gushing width is about 6m, and the average water depth is 1.1m. Due to the direct discharge of domestic sewage and a small amount of industrial wastewater into the river, the sediment is thick and the water ecosystem is seriously damaged. This example adopts the water ecological restoration method of "mud first, then water". First, the SedCaN material is used to quickly remove the oxygen-consuming substances in the mud-water interface of the river in an anaerobic environment; The equipment uses the surface sediment and water body of channel B to orientate the indigenous functional microbial flora, and continuously spread aerobic microorganis...

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

No PUM Login to View More

Abstract

The invention discloses an urban river and lake water ecological restoration method based on a new restoration mode of "mud first and then water", which is used for in-situ restoration of urban river and lake bottom mud and micro-ecological reconstruction. The carbon, nitrogen, and sulfur pollutants in the oxygen sediment are simultaneously reduced, and then based on the domestication and dispersal of microorganisms, the structure of the microbial community in the sediment is regulated in situ to realize the construction of an aerobic microbial ecosystem. The in-situ treatment mode and method for river and lake pollution provided by the present invention have the advantages of low energy consumption, low cost, higher efficiency, more comprehensiveness and safety, and can realize the in-situ construction of a healthy water body-sediment ecosystem and the synergistic reduction of pollutants. Governance goals. In 15 days, 95% of the oxygen-consuming pollution such as sulfide in the sediment can be removed, basically eliminating the black odor of the sediment, solving the technical bottleneck that the aerobic process is difficult to quickly restore the natural environment of the polluted sediment, and shortening the construction period by more than 30 days. The solution can save more than 40‑50% of the cost.

Description

technical field [0001] The present invention relates to the technical field of environmental engineering, in particular to an urban river and lake pollution control method based on the new restoration mode of "mud first, then water", which is used for treating black and odorous bottom mud in river courses, purifying water quality and reconstructing microbial ecosystem. Background technique [0002] At present, there is a widespread problem of sediment pollution in urban rivers and lakes. The organic matter, nitrogen, sulfur and other substances released by heavily polluted sediment will seriously damage the urban water ecological environment. Considering that some pollutants exceeding the carrying capacity of rivers and lakes still enter urban rivers after reaching the standard treatment, at the same time, a large amount of non-point source solid wastes flow into urban rivers with rainwater runoff, and some pollutants are eventually stored through sedimentation and particulat...

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 Patents(China)
IPC IPC(8): C02F11/04C02F11/02C02F3/34C02F3/02C02F101/16C02F101/30
CPCC02F11/04C02F11/02C02F3/348C02F3/02C02F2103/007C02F2303/06C02F2303/02C02F2101/163C02F2203/006C02F2209/22C02F2101/30C02F2209/38C02F2305/06C02F2209/14C02F2101/16Y02W10/10
Inventor 陈文龙罗欢杨旭楠李宁陈军李丽
Owner PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com