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Investigation into the Novel Microalgae Membrane Bioreactor with Internal Circulating Fluidized Bed for Marine Aquaculture Wastewater Treatment

1
Marine College, Shandong University, Weihai 264209, China
2
State Key Laboratory of Urban Water Resources and Water Environment, School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264200, China
*
Authors to whom correspondence should be addressed.
Membranes 2020, 10(11), 353; https://doi.org/10.3390/membranes10110353
Received: 25 October 2020 / Revised: 13 November 2020 / Accepted: 17 November 2020 / Published: 18 November 2020
(This article belongs to the Special Issue Advanced Membrane Processes in Water Treatment)
A microalgae membrane bioreactor (MMBR) with internal circulating fluidized bed (ICFB) was constructed at room temperature to study the removal efficiency of marine aquaculture wastewater pollutants and continuously monitor the biomass of microalgae. Within 40 days of operation, the removal efficiency of NO3–N and NH4+–N in the ICFB-MMBR reached 52% and 85%, respectively, and the removal amount of total nitrogen (TN) reached 16.2 mg/(L·d). In addition, the reactor demonstrated a strong phosphorus removal capacity. The removal efficiency of PO43−–P reached 80%. With the strengthening of internal circulation, the microalgae could be distributed evenly and enriched quickly. The maximum growth rate and biomass concentration reached 60 mg/(L·d) and 1.4 g/L, respectively. The harvesting of microalgae did not significantly affect the nitrogen and phosphorus removal efficiency of ICFB-MMBR. The membrane fouling of the reactor was investigated by monitoring transmembrane pressure difference (TMP). Overall, the membrane fouling cycle of ICFB-MMBR system was more than 40 days. View Full-Text
Keywords: microalgae; membrane bioreactor; internal circulating fluidized bed; marine aquaculture wastewater; nitrogen and phosphorus removal microalgae; membrane bioreactor; internal circulating fluidized bed; marine aquaculture wastewater; nitrogen and phosphorus removal
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MDPI and ACS Style

Ding, Y.; Guo, Z.; Mei, J.; Liang, Z.; Li, Z.; Hou, X. Investigation into the Novel Microalgae Membrane Bioreactor with Internal Circulating Fluidized Bed for Marine Aquaculture Wastewater Treatment. Membranes 2020, 10, 353. https://doi.org/10.3390/membranes10110353

AMA Style

Ding Y, Guo Z, Mei J, Liang Z, Li Z, Hou X. Investigation into the Novel Microalgae Membrane Bioreactor with Internal Circulating Fluidized Bed for Marine Aquaculture Wastewater Treatment. Membranes. 2020; 10(11):353. https://doi.org/10.3390/membranes10110353

Chicago/Turabian Style

Ding, Yi, Zhansheng Guo, Junxue Mei, Zhenlin Liang, Zhipeng Li, and Xuguang Hou. 2020. "Investigation into the Novel Microalgae Membrane Bioreactor with Internal Circulating Fluidized Bed for Marine Aquaculture Wastewater Treatment" Membranes 10, no. 11: 353. https://doi.org/10.3390/membranes10110353

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