Experimental Study on Resource Utilization of Landfill Leachate Membrane Concentrate
Membrane concentrate is a kind of high-salt organic wastewater enriched with pollutants and heavy metals,and its treatment is difficult and costly.The curing and stabilization treatment technology for the treatment of membrane concentrate has the advantages of low cost,easy operation and no secondary pollution.In this study,the effects of different n(SiO2/Al2O3)in fly ash-slag-based cementitious materials on the compressive strength of a domestic waste landfill in Chengdu were explored,and three sets of curing ratios with fly ash,slag and steel slag as the main components were obtained.When the foaming agent content is 9％,the sample has good porosity,good sound absorption performance in the middle and low frequency bands,and has excellent fixation ability for heavy metal ions and pollutants.The three groups of porous sound absorbing materials formed a dense and good network structure,which could effectively solidify the membrane concentrate.
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