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

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...

Images