ISSN 1119-4618
 

Original Research 


Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent

Nurudeen Samuel LAWAL, Hezekiah Oluwole ADEYEMI , Collins Neku NWAOKOCHA, Adedotun Temitope ADEGOKE, Samson Abayomi OLASOJU, Dolapo David OJO.

Abstract
Adequacy of quality freshwater and wastewater management are the major challenges facing aquaculture industries globally. This study presents a preliminary work aimed at assessing the performance of laboratory-scaled heterogeneous constructed wetlands (HCWs) cells with stratified layers of different filling for treating aquaculture wastewater. The frustum shaped plastic HCWs were planted with Cinnamon fern (Osmunda cinnamomea L.) and operated at the pre-setup stage for about three weeks. The effluents were recirculated twice at hydraulic retention times (HRTs) of 24, 48 and 72 hrs and analyzed for turbidity, pH, total phosphorus (TP), TSS, COD, BOD5 and total ammonia nitrogen (TAN). Ranges of reduction efficiencies obtained were: Turbidity (44.4 to 80.3%), TSS (-12.8 to 36.6%), COD (8.7 to 31.2%), BOD5 (3.7 to 31.6%), TP (33.3 to 58.1%) and TAN (-3.7 to 92.6%). The pH was reduced from 7.9 to a slightly alkaline value of 7.2. There were strong correlations in the treatment pattern due to the cell configurations. A significant effect (p<0.05) was also recorded for all the parameters. The configuration of cell 1 at HRT of 72 hours had the most significant (p<0.05) effect on most pollutants except for TAN where cell 2 recorded the highest reduction efficiency (92.6%) at HRT of 24 hrs. With the cells constrained to operate at the pre-setup stage, most pollutants exceeded local and international discharge limits. However, if adequately optimized and extended, the system could serve as a guide for developing large-scale systems for treating wastewater from polyethylene-lined aquaculture ponds.

Key words: Hydraulic retention times; Aquaculture; Constructed wetlands; Wastewater; Cinnamon fern


 
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How to Cite this Article
Pubmed Style

LAWAL NS, HOA, NWAOKOCHA CN, ADEGOKE AT, OLASOJU SA, OJO DD, . Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent. JPAS. 2021; 21(2): 304-313. doi:10.5455/sf.4968


Web Style

LAWAL NS, HOA, NWAOKOCHA CN, ADEGOKE AT, OLASOJU SA, OJO DD, . Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent. http://www.atbuscienceforum.com/?mno=4968 [Access: August 11, 2021]. doi:10.5455/sf.4968


AMA (American Medical Association) Style

LAWAL NS, HOA, NWAOKOCHA CN, ADEGOKE AT, OLASOJU SA, OJO DD, . Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent. JPAS. 2021; 21(2): 304-313. doi:10.5455/sf.4968



Vancouver/ICMJE Style

LAWAL NS, HOA, NWAOKOCHA CN, ADEGOKE AT, OLASOJU SA, OJO DD, . Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent. JPAS. (2021), [cited August 11, 2021]; 21(2): 304-313. doi:10.5455/sf.4968



Harvard Style

LAWAL, N. S., , H. O. A., NWAOKOCHA, C. N., ADEGOKE, A. T., OLASOJU, S. A., OJO, D. D. & (2021) Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent. JPAS, 21 (2), 304-313. doi:10.5455/sf.4968



Turabian Style

LAWAL, Nurudeen Samuel, Hezekiah Oluwole ADEYEMI, Collins Neku NWAOKOCHA, Adedotun Temitope ADEGOKE, Samson Abayomi OLASOJU, Dolapo David OJO, and . 2021. Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent. Science Forum (Journal of Pure and Applied Sciences), 21 (2), 304-313. doi:10.5455/sf.4968



Chicago Style

LAWAL, Nurudeen Samuel, Hezekiah Oluwole ADEYEMI, Collins Neku NWAOKOCHA, Adedotun Temitope ADEGOKE, Samson Abayomi OLASOJU, Dolapo David OJO, and . "Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent." Science Forum (Journal of Pure and Applied Sciences) 21 (2021), 304-313. doi:10.5455/sf.4968



MLA (The Modern Language Association) Style

LAWAL, Nurudeen Samuel, Hezekiah Oluwole ADEYEMI, Collins Neku NWAOKOCHA, Adedotun Temitope ADEGOKE, Samson Abayomi OLASOJU, Dolapo David OJO, and . "Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent." Science Forum (Journal of Pure and Applied Sciences) 21.2 (2021), 304-313. Print. doi:10.5455/sf.4968



APA (American Psychological Association) Style

LAWAL, N. S., , H. O. A., NWAOKOCHA, C. N., ADEGOKE, A. T., OLASOJU, S. A., OJO, D. D. & (2021) Preliminary Assessment of Vertical-flow Heterogeneous Media Constructed Wetland Cells for Treating Aquaculture Effluent. Science Forum (Journal of Pure and Applied Sciences), 21 (2), 304-313. doi:10.5455/sf.4968