Method of extracting humic acids from rubbish percolation liquid membrane process concentrated liquid

A technology of landfill leachate and concentrate, which is applied in the field of humic acid extraction, can solve the problems of large power consumption and energy waste, and achieve the effects of avoiding energy waste, saving energy, and realizing resource utilization

Inactive Publication Date: 2007-03-07
TSINGHUA UNIV
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Problems solved by technology

[0009] Aiming at the problems of large power consumption and serious energy waste in the technology of extracting humic acid from leachate membrane treatment concentrate, the present invention provides a method for extracting humic acid from landfill leachate membrane treatment concentrate

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  • Method of extracting humic acids from rubbish percolation liquid membrane process concentrated liquid

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Embodiment Construction

[0019] The method for extracting humic acid from leachate membrane treatment concentrate of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] The present invention combines the characteristics of the high operating pressure of the original leachate membrane treatment system, and connects the humic acid resource recovery membrane separation system based on the membrane module directly through the discharge pipe of the concentrate, and if necessary, through a pressure reducing valve, so as to make full use of the original leachate The operating pressure of the membrane treatment system allows the humic acid in the leachate membrane concentrate to be extracted.

[0021] As shown in Figure 1, the leachate is divided into two parts after being treated by the first set of membrane treatment system (nanofiltration or reverse osmosis): one part is the treated effluent, and the other part is the membrane concentrate, which is r...

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Abstract

The invention discloses a humic acid extracting method from condensate of rubbish percolation film, which comprises the following steps: connecting the first group of film disposing system and second group of film separating system through pipe; pumping rubbish percolation liquid in the first group of film disposing system; injecting condensate with pressure in the second group of film separating system to obtain the humic acid.

Description

technical field [0001] The invention relates to a method for extracting humic acid from landfill leachate membrane treatment concentrate. Background technique [0002] Leachate is a major problem facing landfill sites worldwide. As the landfill time increases, the BOD / COD ratio gradually decreases, and it has become a recognized fact that leachate is becoming more and more difficult to treat. In recent years, many researches and practices at home and abroad have proved that biological treatment can achieve high-efficiency denitrification, but the control index of organic pollutants is usually difficult to achieve. The residual COD of leachate after biological treatment is generally between 300 and 1500 mg / L. Further research shows that almost all the organic matter in biological treatment effluent is humic acid, which is extremely difficult to degrade, which is the main reason for the difficult treatment of leachate. [0003] With the increasingly stringent environmental p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08H5/00C08H99/00
Inventor 聂永丰岳东北许玉东诸毅苗豪梅
Owner TSINGHUA UNIV
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