SUN Ai-hua,CHEN Bo,LIU Shen.Treatment of Leachate from Waste Incineration Plant by a Combined Process of IOC, A/O, and UF/NF/RO[J].China Water & Wastewater,2021,37(16 16):112-118.
Treatment of Leachate from Waste Incineration Plant by a Combined Process of IOC, A/O, and UF/NF/RO
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
16 16
Page:
112-118
Column:
Date of publication:
2021-08-17
- Keywords:
- leachate; anaerobic reactor; ultrafiltration; nanofiltration; reverse osmosis
- Abstract:
- In a certain domestic waste incineration power plant in Changzhou, the collected urban domestic wastes are fermented and decomposed to improve the calorific value, during which leachate containing high concentration of organic matter is produced. The leachate was treated by a combined process of inner and outer cycling anaerobic reactor (IOC), A/O, and UF/NF/RO with designed treatment capacity of 300 m3/d, and the effluent quality follows the standard of supplementary water quality for open type circulating cooling water system in The Reuse of Urban Recycling Water—Water Quality Standard for Industrial Uses(GB/T 19923-2005). The self-developed IOC can better adapt to the treatment of high concentration leachate through the combination of inner and outer circulation systems. The MBR system constituted with the external tubular UF and the biological treatment A/O system can remove organics and total nitrogen well. Then the MBR effluent is treated by nanofiltration and reverse osmosis to better ensure that the final effluent quality can better meet the standard requirements. It is found that the removal rates of COD, NH3-N, TN and TP are 99.99%, 99.98%, 99.24% and 99.98%, respectively, and the corresponding effluent values are 4.6, 0.24, 12.4 and 0.014 mg/L, respectively. These results are superior to the standard of the open type circulating cooling water quality, thereby the effluent can be reused for supplementary.
Last Update:
2021-08-17