Supercharge Your Innovation With Domain-Expert AI Agents!

Method for improving constructed wetlands to treat heavy-metal wastewater

A technology of artificial wetlands and heavy metals, applied in the direction of special treatment targets, sustainable biological treatment, chemical instruments and methods, etc., can solve problems such as unsatisfactory effects and difficulty in ensuring long-term operation effects, and achieve unsatisfactory results, low cost, Avoid the effect of wetland clogging

Inactive Publication Date: 2017-09-05
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a small amount of humic acid can be applied to improve the treatment of chromium-containing wastewater in constructed wetlands, it is expected to solve the shortcomings of current constructed wetlands such as the unsatisfactory treatment of high-concentration chromium wastewater and the difficulty in ensuring long-term operation effects.

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
  • Method for improving constructed wetlands to treat heavy-metal wastewater
  • Method for improving constructed wetlands to treat heavy-metal wastewater
  • Method for improving constructed wetlands to treat heavy-metal wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Use PVC boards to form a waveform subsurface flow constructed wetland model. The constructed wetland length × width × height = 1.3m × 0.7m × 0.5m. The water intake area is 0.1m long and the plant area is 1.2m. Zone 2, Zone 2, Zone 3, Zone 6 and Zone 4, Zone 10, each zone is 0.4m long (see figure 1 ); there is a first partition 5 between Zone 2, Zone 2 and Zone 3, and Zone 6, and a second partition 9 between Zone 3, 6, and Zone 4, 10. The first partition 5 is not exposed to the water surface, and the second partition 9 is exposed Water surface: the second sampling point 4 and the first sampling point 3 are respectively located on the top and bottom of area 2, the third sampling point 7 is located at the lower part of area 6, and the fourth sampling point 11 is located at the upper water outlet of area 4; there is a water outlet pipe at the upper part of area 4 12. There is a vent pipe 13 in the lower part of Zone 4; Zone 1 and Zone 1 are all gravel; Zone 2, Zone 3, Zone ...

Embodiment 2

[0019] Use PVC boards to form a waveform subsurface flow constructed wetland model. The constructed wetland length × width × height = 1.3m × 0.7m × 0.5m. The water intake area is 1 area, 1 length is 0.1m, and the plant area is 1.2m. It is divided into 3 areas on average. That is, Zone 2, Zone 2, Zone 3, Zone 6 and Zone 4, Zone 10, each zone is 0.4m long (see figure 1 ); there is a first partition 5 between Zone 2, Zone 2 and Zone 3, and Zone 6, and a second partition 9 between Zone 3, 6, and Zone 4, 10. The first partition 5 is not exposed to the water surface, and the second partition 9 is exposed Water surface: the second sampling point 4 and the first sampling point 3 are respectively located on the top and bottom of area 2, the third sampling point 7 is located at the lower part of area 6, and the fourth sampling point 11 is located at the upper water outlet of area 4; there is a water outlet pipe at the upper part of area 4 12. There is a vent pipe 13 in the lower part of...

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 a method for improving constructed wetlands to treat heavy-metal wastewater. The method comprises the steps: (1) constructing constructed wetlands, wherein soil and gravel are utilized as substrates, the gravel is arranged on a lower layer, the soil is arranged on an upper layer, and a volume ratio of the gravel to the soil is 1 to 3; (2) applying humic acid into the soil of the constructed wetlands and evenly mixing the soil with the humic acid, wherein the application dosage of the humic acid is one thousandth to one hundredth of the mass of the soil; (3) the humic acid is black humic acid and has the property of dissolving into alkali and not dissolving into water and acid; (4) planting wetland plants into the soil of the constructed wetlands, then inputting tap water to the constructed wetlands until awater surface right submerges a soil surface; (5) beginning operating the constructed wetlands to treat wastewater containing heavy metal after the wetland plants grow for 30 days. The method disclosed by the invention has the advantages of low cost, convenience in operation, no secondary pollution and the like, and the defects that existing constructed wetlands have a non-ideal effect on treating higher-concentration chromium wastewater, a long-time operating effect is difficult to guarantee, and the like can be effectively overcome.

Description

technical field [0001] The invention relates to the field of heavy metal polluted wastewater treatment, in particular to a method for improving artificial wetland treatment of heavy metal wastewater. Background technique [0002] The problem of chromium pollution in water bodies in my country is very prominent. Constructed wetlands have been used to treat various chromium-containing wastewater and have been proved to be a promising technology for the treatment of chromium-containing wastewater. Although the use of existing constructed wetlands to treat chromium wastewater has good natural, social and economic benefits, it also has disadvantages such as large footprint, unsatisfactory treatment of high-concentration chromium wastewater, and difficulty in ensuring long-term operation effects. How to expand the capacity of chromium in constructed wetlands, to obtain higher treatment efficiency with limited space, and to maintain the long-term operation of constructed wetlands ...

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): C02F3/32C02F101/20C02F101/22
CPCC02F3/32C02F2101/20C02F2101/22C02F2303/14C02F2305/00Y02W10/10
Inventor 张杏锋张学洪高波
Owner GUILIN UNIVERSITY OF TECHNOLOGY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com