Supercharge Your Innovation With Domain-Expert AI Agents!

Efficient subsurface flow constructed wetland system and sewage treatment method thereof

A constructed wetland system and wetland technology, which is applied in the field of high-efficiency subsurface flow constructed wetland systems, can solve the problems that the effluent indicators cannot meet the design standards, shorten the operating life of constructed wetlands, and poorly operate wetlands in winter, so as to improve the biochemical properties of wastewater, Prevention of short-circuit flow and dead water zone, the same effect of pollution load

Pending Publication Date: 2020-05-08
岭南水务集团有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The water flow state of the constructed wetland system is an important factor to maintain the normal operation of the system and make the system fully exert its purification effect. However, after clogging occurs, the permeability coefficient of the matrix will drop sharply, and the water passing capacity will also decrease accordingly. A large amount of sewage will be introduced into the wetland system. It directly accumulates on the surface of the wetland, and the long-term accumulation of water will cause odor, cause the breeding of mosquitoes and flies, and deteriorate the operating environment; the water also prevents the diffusion of oxygen into the substrate layer, thereby reducing the removal effect of pollutants (especially organic matter and ammonia nitrogen), making the effluent The index does not meet the design standard, and at the same time shortens the operating life of the constructed wetland
[0006] Constructed wetlands generally occupy a large area, low hydraulic load, and poor operating effect in winter. The patented technology developed in this invention is mainly to solve the problems of large occupied area, poor adjustment ability, easy blockage, and poor operating effect of wetlands in winter.

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
  • Efficient subsurface flow constructed wetland system and sewage treatment method thereof
  • Efficient subsurface flow constructed wetland system and sewage treatment method thereof
  • Efficient subsurface flow constructed wetland system and sewage treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, a high-efficiency subsurface flow constructed wetland system includes a multifunctional combination pool 1 and a wetland unit 3. The sewage first intercepts suspended solids and floating impurities in the multifunctional combination pool, and hydrolyzes and acidifies the water body; then in the wetland unit Filtration and biodegradation, the drip irrigation system 6 is used to distribute water evenly, and the membrane guide system 7 is used to discharge silt to purify the water body.

[0038] The multi-functional combination pool is divided into upper and lower two-layer structure. The upper layer structure is a grid pool 4 with two grids, one grid is a mechanical grid, and the other is an artificial grid, which intercepts suspended solids and floating impurities; the lower structure is a hydrolysis acidification adjustment tank. Pool 5, the effluent of the upper grid pool flows to the bottom of the hydrolysis acidification pool by gravity thr...

Embodiment 2

[0046] Such as figure 2 , 3 As shown, polyethylene geotextile layer, first coarse sand layer, first gravel layer, steel wire mesh layer, second gravel layer, second coarse sand layer, and planting soil layer are successively laid in the wetland unit from bottom to top.

[0047] Wherein, the polyethylene geotextile layer is laid with a polyethylene plastic film with a thickness of 0.5mm, and the geotextile with a liner density of 500g / m2 on both sides; the thickness of the first coarse sand layer is 100mm, and the thickness of the first gravel layer The thickness of the second gravel layer is 500mm, and the particle size of the gravel is φ100~150mm; the aperture of the steel wire mesh layer is 10*10mm, and the diameter of the steel wire is 0.6mm; the thick bottom of the second gravel layer is 200mm, and the particle size of the gravel is φ10-15mm; The thickness of the second coarse sand layer is 200mm; the thickness of the planting soil layer is 200mm, and the planting soil l...

Embodiment 3

[0057] In the early stage of constructed wetland operation, the fine clay particles in the filler and many silted SS together form a dense impermeable layer, and the extracellular polymer continuously condenses and adsorbs suspended or colloidal substrates of different particle sizes, thereby forming a large particle size The floc-like accumulations cause the accumulation of organic matter and inorganic matter, and block the pores of the filler. It is necessary to timely export the aging and falling off biofilm system, and regularly remove the sediment, intercepted matter and peeling generated during the operation of the wetland from the outlet pipe in the sump. The biofilm discharges the wetland unit to ensure the smooth flow of water in the wetland. When the film guide device is activated, close the valve on the outlet pipe of the artificial wetland sump, so that the filling in the wetland is in a state of full water infiltration, and use hydraulic infiltration for 24 hours t...

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
Thicknessaaaaaaaaaa
Densityaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides an efficient subsurface flow constructed wetland system which comprises a multifunctional combined pool and a wetland unit; suspended matters and floating impurities of sewage are intercepted in the multifunctional combined pool, and hydrolytic acidification is carried out on a water body; filtering and biodegrading are carried out in the wetland unit, water is uniformly distributed by adopting a drip irrigation system, silt is discharged by adopting a film guide system, and the water body is purified. The constructed wetland system disclosed by the invention can adapt to the characteristic of domestic sewage discharge of villages and towns for sewage purification treatment, and is an efficient subsurface flow constructed wetland treatment system suitable for villages and towns with the treatment scale not higher than 500 m<3> / d.

Description

technical field [0001] The invention relates to the technical field of high-efficiency subsurface flow constructed wetlands, in particular to a high-efficiency subsurface flow constructed wetland system for sewage treatment in villages and towns. Background technique [0002] Village and town domestic sewage has the characteristics of scattered discharge sources, weak environmental awareness of the people, insufficient facilities and economic conditions, large regional differences, large time-varying village sewage, and difficulties in the operation of biochemical processes. There is a lack of in-depth and systematic research on the treatment of village and town sewage. Therefore, it is of great theoretical and practical significance to develop and promote village sewage treatment systems that adapt to the characteristics and economic strength of our country's villages and towns. [0003] Constructed wetland is a sewage treatment technology developed in the late 1970s. Its c...

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
IPC IPC(8): C02F9/14C02F3/32C02F3/34C02F101/16
CPCC02F9/00C02F3/32C02F3/34C02F2209/06C02F2209/14C02F2209/08C02F2209/16C02F2209/18C02F2209/22C02F2209/10C02F2101/16C02F2303/14
Inventor 秦红科佟镇李好波于田田
Owner 岭南水务集团有限公司
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