XIEYa-wei,LIUHao-dong,FANCheng-yue,et al.Leachate Membrane Concentrate Treatment Based on Disinfectant Preparation Targets[J].China Water & Wastewater,2024,40(13):7-13.
Leachate Membrane Concentrate Treatment Based on Disinfectant Preparation Targets
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第13期
Page:
7-13
Column:
Date of publication:
2024-07-01
- Keywords:
- waste leachate; membrane concentrate; coagulation and precipitation; nanofiltration; electrolysis; disinfectant
- Abstract:
- The leachate membrane concentrate from a domestic waste incineration plant, which is produced by the nanofiltration/reverse osmosis process, is a kind of wastewater containing high concentration of non-biodegradable organic matter, complex salts, and heavy metals. Considering the high salinity of the membrane concentrate, particularly the elevated concentration of chloride ions, we conducted a study on producing chlorine-containing disinfectant through the integrated process of “coagulation and precipitation + nanofiltration+ electrolysis”. The results showed that 70%-80% of the membrane concentrate could be recovered by the combined process and prepared into a disinfectant containing 0.40% effective chlorine. The removal rates of COD and total hardness (expressed in terms of CaCO3) were 99.35% and 78.43%, respectively. This process can facilitate the recycling of membrane concentrate and the disinfectant can be utilized for treating the open circulating cooling water in the plant.
Last Update:
2024-07-01