XIAZheng-qi,ZHANMei-li,LIUZan-xian,et al.Full Quantitation Disposal Practice of Landfill Leachate Concentrate in Xiaojianxi, Qingdao[J].China Water & Wastewater,2024,40(10):126-131.
Full Quantitation Disposal Practice of Landfill Leachate Concentrate in Xiaojianxi, Qingdao
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第10期
Page:
126-131
Column:
Date of publication:
2024-05-17
- Keywords:
- leachate concentrate; deep flocculation; evaporating crystallization; full quantitation disposal
- Abstract:
- The concentrate is the residual liquid generated from landfill leachate treatment process, which is the key to the full quantitation disposal of landfill leachate. Aiming at the problems of unstable pretreatment, equipment scaling, large amount of evaporation concentrate, and non-crystallization of drying system in Qingdao Xiaojianxi concentrate treatment project during operation, the deep flocculation and chemical softening pretreatment process is used to ensure the stable operation of the follow-up MVR evaporation and drying system. Thus the leachate concentrate treatment capacity is significantly improved, the concentration yield is reduced, the continuous stable operation cycle is increased, and the crystallization reduction ability of the drying system is restored. It shows that the full quantitation disposal of leachate concentrate can be achieved by adopting the process of deep flocculation, chemical softening, silicon carbide film, MVR evaporation, drying reduction, and coordinated incineration.
Last Update:
2024-05-17