Vegetative cover treatment method of long buring age buring field percolate

A treatment method and leachate technology, which is applied in the field of solid waste treatment and disposal, can solve the problems of good treatment effect, economic obstacles, and difficulty in meeting discharge standards, and achieve the effects of low investment cost, improved fertilizer retention characteristics, and low implementation cost

Active Publication Date: 2006-06-14
TONGJI UNIV
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the treatment of landfill leachate has been highly valued, and a wide range of landfill leachate treatment processes have been developed, these technologies still have serious defects in practical application: or the treatment cost is low but the treatment effect is low. , Especially poor adaptability to leachate of different filling ages, or good treatment effect but high treatment cost
The specific performance is as follows: 1) Although the biological (including aerobic and anaerobic) treatment methods with lower processing costs can effectively (COD, BOD) 5 removal rate > 80%) to treat landfill leachate with a short landfill operation period (less than 5 years) (also known as short-fill age leachate), but for landfill with a long landfill operation period (more than 5 years) Leachate (also known as long-filling leachate) has almost no treatment effect, see ('Review: Anaerobic treatment of municipal sanitary landfill leachates: the problem of refractory and toxic components'Alkalay D, Guerrero L, Lema J M et al .World Journal of Microbiology and Biotechnology 14 (3): 309-310, 1998); Not only that, even if the current most perfect biological treatment process is dealing with short-age leachate, the COD of the treated water is generally around 1000mg/L , it is difficult to meet the relevant national discharge standards, and there is still a greater threat to discharge in

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
  • Vegetative cover treatment method of long buring age buring field percolate
  • Vegetative cover treatment method of long buring age buring field percolate
  • Vegetative cover treatment method of long buring age buring field percolate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see figure 1 and 2 . To implement the present invention using the final coverage of the landfill, first arrange the vegetation-soil treatment facility of the present invention consisting of irrigation and water delivery facilities, vegetation and soil layers on the final coverage of the landfill. Since the final coverage of the landfill is gradually formed with the accumulation of the operation time of the landfill, the construction of corresponding facilities should also be carried out in stages. Considering the rationality of technology and economy, the first phase of construction can Final coverage greater than 10,000m 2 start at 10,000m 2 About the final coverage, the first phase of the expansion project can be implemented.

[0033] Specific construction steps and methods:

[0034] 1. Irrigation and water delivery facilities. Usually, when constructing the first-phase landfill final cover surface leachate vegetation-soil treatment facilities, the water quality...

Embodiment 2

[0042] see figure 1 and 3 . Implement the present invention according to the off-site layout scheme, the advantage is not limited by the landfill process, and can form enough vegetation-soil layers to handle all the leachate produced in the site for irrigation treatment at one time; but the disadvantage is that, Since the irrigation facilities are located outside the landfill, the irrigation seepage water is not isolated by the anti-seepage layer of the landfill. In order to protect the groundwater, a special anti-seepage layer must be installed under the irrigated soil layer.

[0043] From the perspective of saving investment and land occupation, this scheme can also be applied in combination with the vegetation-soil layer landfill coverage layout scheme, that is, first construct a certain area of ​​irrigation facilities outside the site to solve the problem of landfill operation in the initial stage. At the same time, with the increase of the final coverage area of ​​the s...

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
Depthaaaaaaaaaa
Widthaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The present invention relates to a domestic refuse landfill yard percolation liquor treatment method by utilizing vegetation system. Said method includes the following steps: firstly, constituting vegetation soil layer and irrigation water-conveying installation, then utilizing percolation liquor whose BOD5 mass volume concentration is less than 200 mg/L to make irrigation. Said invention also provides the concrete irrigation steps and measures. It is characterized by that it utilizes plant root system and microbial metabolism action in the soil layer to purify the percolation liquor. The removal rates of COD, ammonia nitrogen and total nitrogen are respectively up to 90%, 95% and 80%.

Description

technical field [0001] The invention relates to a leachate treatment process of a domestic garbage landfill, in particular to a treatment technology for biologically treating the effluent of the leachate with a long fill age or with a short fill age leachate having similar water quality characteristics. The invention belongs to the technical field of solid waste treatment and disposal. Background technique [0002] The main secondary pollution in the landfill disposal process of domestic waste is landfill leachate, which has the characteristics of high pollution load and variable water quality, see ('Present and Long-Term Composition of MSWlandfill leachate: A Review. 'Kjeldsen P, Barlaz M A, Rooker A P, et al.Critical Reviews in Environmental Science and Technology 32(4):297-336, 2002), there is a great threat to the environment around the landfill. Although the treatment of landfill leachate has been highly valued, and a wide range of landfill leac...

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): C02F3/32C02F3/34C02F103/06
Inventor 何品晶邵立明李国建瞿贤
Owner TONGJI UNIV
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