Performance of micro-pressure double-cycle coupled membrane integrated bioreactor for the treatment of urban sewage
In: Environmental science and pollution research: ESPR, Band 31, Heft 10, S. 15525-15537
ISSN: 1614-7499
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In: Environmental science and pollution research: ESPR, Band 31, Heft 10, S. 15525-15537
ISSN: 1614-7499
In: BITE-D-22-00133
SSRN
In: Water and environment journal, Band 34, Heft S1, S. 742-752
ISSN: 1747-6593
AbstractLow temperature environment was one of the difficulties in sewage treatment. In this study, the removal efficiency of multistage AO process was analysed under different hydraulic residence time (12 h, 8 h and 6 h) and inlet flow distribution ratio(5 : 4 : 4, 3 : 2 : 1 and 25 : 15 : 6), the rules of pollutant migration and transformation were compared and analysed under different control parameters. The results show that enhanced nitrogen removal and optimised organics utilisation were obtained simultaneously in the feeding process with hydraulic retention time of 8 h as well as influent distribution ratio of 3 : 2 : 1. HRT and inlet flow distribution ratio affect nitrogen load and organic matter distribution in each stage of the multistage AO system, the removal efficiency of ammonia nitrogen in each stage of the system was more than 80% under optimal conditions, the total nitrogen removal rate was more than 80%, among which the synchronous nitrification and denitrification account for 29.50%.
In: JWPE-D-21-03522
SSRN