ZHANG Ling-ling,LIU Li-zao,ZHANG Yu-ping,et al.Purification Efficiencies of Aquaculture Water by Enhanced Floating Treatment Wetlands under Different Aeration Conditions[J].China Water & Wastewater,2020,36(17 17):69-74.
Purification Efficiencies of Aquaculture Water by Enhanced Floating Treatment Wetlands under Different Aeration Conditions
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
17 17
Page:
69-74
Column:
Date of publication:
2020-09-01
- Abstract:
- Purification efficiencies of enhanced floating treatment wetlands (EFTWs) on aquaculture water and the nitrogen composition of the effluent under different aeration conditions were studied. When aeration intensity and time were 1 L/min and 3 hours per day, the removal efficiencies of TN, COD and TP in aquaculture water were the highest, which were 73.9%, 81.7% and 54.9%, respectively. The absence of aeration resulted in a higher concentration of?NH4+-N in the effluent of the system, and?NO3--N would accumulate when the aeration time was 4 or 8 hours per day. Therefore, purification efficiency and composition of nitrogen in the effluent were comprehensively considered, and purification efficiency of EFTWs with three-dimensional elastic packing was the best when aerobic intensity and time were 1 L/min and 3 hours per day.
Last Update:
2020-09-01