Underflow landscape green land system with concentric structure for deeply disposing small-scale distributed domestic sewage

A domestic sewage and advanced treatment technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve complex structure, poor treatment effect of constructed wetland system, and serious secondary pollution and other problems, to achieve the effect of uniform water distribution, less maintenance and management workload, and prevent clogging

Inactive Publication Date: 2011-03-23
JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to solve the problems of poor treatment effect, complex structure and serious secondary pollution in the artificial wetland system in the process of small-scale decentralized domestic sewage advanced treatment in rural areas or small towns, and to provide a met...

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
  • Underflow landscape green land system with concentric structure for deeply disposing small-scale distributed domestic sewage
  • Underflow landscape green land system with concentric structure for deeply disposing small-scale distributed domestic sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 The landscape greenbelt treatment system shown. The system dimensions are: outer ellipse a=16.0m, b=12.0m, inner ellipse a=3.0m, b=1.0m; outer ellipse height 1.0m, inner ellipse height 2.0m, buried depth 1.0m The thickness ratio of sandy soil, fine limestone or dolomite to rough limestone or dolomite is 1.5:1:0.8; the system is continuously watered, and the vegetation mainly includes Ophiopogon japonicus, canna, nandina, etc., planted at even intervals.

[0017] The results of engineering practice show that the main technical indicators of a concentric circular landscape green space system for advanced treatment of small-scale domestic sewage:

[0018] Treated water volume: 60m 3 / d;

[0019] Area: 160m 2 ;

[0020] Construction cost: 800 yuan / m 3 waste water;

[0021] Operating costs: basically no operating costs.

[0022] The treatment target water quality is a rural distributed domestic sewage, and the pretreatment is a combination of aerobic...

Embodiment 2

[0024] Others are the same as implementation example 1, the treated water quality is small-scale domestic sewage in a small town, and the treated water volume is 100m 3 / d, pretreatment is anaerobic (septic tank) treatment, and after the present invention is processed, effect is as follows: influent COD is 125.5mg / L, and TN is 44.4mg / L, and TP is 3.2mg / L, and BOD5 is 45.5mg / L. After the treatment of the present invention, the effluent COD is 65.8mg / L, TN is 15.8mg / L, TP is 1.5mg / L, and BOD5 is 15.0mg / L.

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 underflow landscape green land system with a concentric structure (concentric circle, concentric ellipse, concentric square, concentric polygon, and the like) for deeply disposing small-scale distributed domestic sewage. The system consists of four to six concentric partition walls, an inner waterproof mortar or a waterproof concrete; the height of the wall is declined from inside to outside along with the hydraulic gradient; rough large lime stone or dolomite particles, thin lime stone or dolomite particles and sand-containing soil are sequentially filled between the partition walls from bottom to top; a water distribution pipe is embedded in the partition wall; the system operation adopts the circulation manner of upstream-downstream-upstream to distribute water; a water inlet pipe and the water distribution pipe are embedded in a filling layer; green plant is grown on the soil; an outer circle is provided with an ecological catchment channel in which natural biological fillers such as cobblestones and dimension stones are arranged; emergent aquatic plants can be planted; yielding water in the outer circle landscape green land is in water-dropping aeration when entering the ecological catchment channel; and the quality of the yielding water can be improved through further biological contact and oxidation. The subsequent blockage of the landscape green land is prevented just by regularly cleaning the first-level filler filter bed with the least area. By using the system to process small-scale domestic sewage, the invention has the advantages of even water distribution, good treatment effect, low operation cost, stable operation, attractiveness, low maintenance load, no secondary pollution, and the like. The invention is suitable for promotion and application in disposing distributed domestic sewage in countryside, small towns and residential communities.

Description

technical field [0001] The present invention relates to the technical field of sewage treatment, specifically, refers to a concentric structure (concentric circle, concentric ellipse, concentric square, concentric polygon, etc.) applied to the advanced treatment of small-scale decentralized domestic sewage in rural areas or small towns. Greenfield treatment process. Background technique [0002] Since the 1980s, constructed wetland sewage treatment technology has been widely used in the fields of sewage treatment and surface water pollution control due to its advantages of low investment, low operation and maintenance costs, low energy consumption, and beautiful appearance. At present, typical constructed wetlands are mainly composed of soil, gravel and plants, and are mostly used for advanced treatment of sewage. Although the use of constructed wetlands to treat sewage has shown great advantages, its purification efficiency for sewage is still affected by factors such as 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): C02F3/32C02F3/30
CPCY02W10/10
Inventor 喻学敏张龙白永刚许明梁志冉李爱民吴伟黄洁慧林乔乔
Owner JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap