Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for processing membrane filtration concentrated solution of middle and late landfill leachate

A technology for landfill leachate and treatment methods, which is applied in the field of treatment of mid-late stage nanofiltration membrane concentrates and reverse osmosis membrane concentrates in landfills, achieving the effects of reducing load, facilitating subsequent biochemical treatment, and reducing the degree of conjugation

Inactive Publication Date: 2010-07-07
KUNMING UNIV OF SCI & TECH
View PDF1 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, coagulation / flocculation-H 2 o 2 Research and application report of enhanced micro-electrolysis combination method for treating middle and late landfill leachate membrane filtration concentrate

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In the specific implementation manner, the processing object of embodiment 1, embodiment 2 and embodiment 3 is the nanofiltration concentrated liquid of landfill landfill late stage landfill leachate, and the age of landfill is 8 years, and the water quality index is: chromaticity 7850 times, UV 254 59.32cm -1 , COD 6500mg / L, TOC 2365mg / L, BOD 5 The / COD value is 0.03; the treatment object of embodiment 4, embodiment 5 and embodiment 6 is the reverse osmosis concentrated solution of landfill landfill in the middle and late stage of B, the landfill age is 5 years, and the water quality index is: chromaticity 4600 times , UV 254 32.5cm -1 , COD4400mg / L, TOC 1450mg / L, BOD 5 The / COD value is 0.08. .

[0018] (1) Example 1: A landfill has a landfill age of 8 years and is a typical late-stage landfill. The pH value of the concentrated solution is 7.5. In the present embodiment, the pH value of the concentrated solution is adjusted to 4 with acid, the mixer is turned o...

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
clearance rateaaaaaaaaaa
clearance rateaaaaaaaaaa
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for processing membrane filtration concentrated solution of middle and late leachate in a refuse landfill and belongs to the technical field of the environment protection. The method comprises the following steps: adjusting a pH value of the membrane filtration concentrated solution to between 4 and 6.5; adding polymeric aluminium salt or a composite coagulating / flocculating agent the main component of which is polymeric aluminium salt into the adjusted membrane filtration concentrated solution, wherein the adding amount of Al2O3 serving as the polymeric aluminium salt or the composite coagulating / flocculating agent is between 50 and 1,000 mg / L; stirring the mixture for 0.5 to 5 minutes at a speed of between 100 and 280 revolutions per minute, and stirring the obtained product for 3 to 30 minutes at a speed of between 20 and 100 revolutions per minute; after the membrane filtration concentrated solution reacts with the polymeric aluminium salt or the composite coagulating / flocculating agent, carrying out solid-liquid separation; putting clear solution in an iron-carbon bed with a mass ratio of iron to carbon of 1 to 4, wherein the aeration rate is between 100 and 250 cubic meter air per cubic meter water per hour; carrying out micro-electrolysis reaction for 10 to 30 minutes; then adding H2O2 the mass concentration of which is 30 percent to strength micro-electrolysis reaction, wherein the adding amount of H2O2 is between 0.05 and 0.5 L per cubic meter water and the reaction time is between 0.5 and 3 hours; and adjusting the pH of the effluent to between 7.5 and 9.0 to obtain the processed effluent after the solid and the liquid are separated. The method has the advantages of simple operation, relatively lower operation cost, better processing effect and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to the treatment of the membrane concentrate produced after the landfill leachate is treated with "biochemical method + membrane method advanced treatment", in particular to the mid-late stage nanofiltration membrane concentrate of the garbage landfill And the treatment of reverse osmosis membrane concentrate. Background technique [0002] Sanitary landfill is currently the most important treatment and disposal method for domestic waste in my country, and it is also the main treatment method in most foreign countries. The actual treatment technologies for landfill leachate are: ① treatment technology combining biological and physical and chemical methods; ② biochemical method + membrane filtration as the main treatment technology; ③ leachate backfilling landfill method. However, the most effective treatment method for landfill leachate is "biochemical method + membra...

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): C02F9/08C02F1/72C02F1/461C02F1/52
Inventor 徐晓军黄进刚朱丽云安正阳赵宾宁平
Owner KUNMING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com