Deep treatment process of landfill leachate

A landfill leachate and advanced treatment technology, applied in osmosis/dialysis water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc., can solve problems such as large investment cost, large amount of concentrated liquid, and secondary pollution , achieve the effect of low salt concentration, low price and prolong service life

Active Publication Date: 2011-06-08
BMEI
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention solves the secondary pollution caused by landfill leachate at home and abroad, especially middle-aged and aging landfill leachate, which cannot be discharged up to standard by biological treatment alone, and the use of other treatment methods has large investment costs, large volume of concentrated liquid and is difficult to handle. Difficulties, so it is very suitable for the renovation or new construction of landfill leachate treatment facilities

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
  • Deep treatment process of landfill leachate
  • Deep treatment process of landfill leachate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] See figure 1 Shown, landfill leachate treatment method of the present invention needs to carry out according to the following steps,

[0030] 1. The advanced treatment system is used to treat the secondary effluent after biochemical treatment. Biochemical treatment mainly refers to nitrification and denitrification reactions. The effluent water quality is: COD3 <35mg / l, TN<200mg / l, chroma<200.

[0031] 2. After the effluent of the biochemical tank is separated by sedimentation in the secondary sedimentation tank, the supernatant enters the coagulation sedimentation tank. A "pipeline mixer" is installed on the pipeline at the front end of the water inlet, and is connected to the pipeline through a flange or threaded connection. It is an efficient mixing device commonly used in various water treatment chemicals for water supply and drainage projects, and is easy to buy from the market. . Add the polymeric ferric sulfate agent into it, the dosage: the volume ratio of 15%...

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
diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a deep treatment process of landfill leachate. The effluent of landfill leachate subjected to biochemical treatment is used as influent. The process adopts a coagulative precipitation tank, an oxidation tank, an anaerobic biological filter and a membrane treatment device and comprises the following steps of: (1) removing partial organic matter through coagulative precipitation to reduce chroma; (2) further removing refractory and non-biochemical organic matter with an oxidizer formed by ozone, and the like and improving the biodegradability of the effluent; (3) removing SS (Suspended Solid), organic matter and nitrate in the leachate through an anaerobic filter; and (4) ensuring that the effluent stability of the whole system through a membrane separation technology reaches the emission standard and canbe recyclable. The process has the advantages of lower operation cost, stable effluent, less quantity of generated concentrated liquid, less salt content in theconcentrated liquid, and the like, and the process of biochemistry and materialization of the pretreatment, which is used before using the membrane method, can prolong the service life of the membrane.

Description

technical field [0001] The present invention relates to a process for advanced treatment of landfill leachate, a process for advanced treatment of landfill leachate that combines coagulation, oxidation, anaerobic biological method, and membrane method. This process is difficult to handle domestically. The landfill leachate has excellent effect and is suitable for a wide range of water quality, suitable for the renovation and new construction of landfill leachate treatment projects. Background technique [0002] Improper treatment of landfill leachate will cause serious secondary pollution to the groundwater and surface water around the landfill, which has attracted the attention of all countries in the world. The water quality of domestic landfill leachate varies greatly. Generally speaking, COD ranges from 5,000 to 60,000mg / L, of which BOD content accounts for 25%-50%. In addition, it contains nearly 30 kinds of aromatic hydrocarbons that are difficult to biodegrade, nearl...

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): C02F9/14C02F3/30C02F1/52C02F1/78C02F1/44
Inventor 钟红春朱柱民雷波曹占强周乔张成波史卓成杨路窦福水
Owner BMEI
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