Septage effluent treatment using floating constructed wetland with Spirodela polyrhiza: Response of biochar addition in the support matrix
Amendments and modifications in conventional methods are continuously required to make wastewater treatment cost-effective, easy to handle, and eco-friendly. Given that, the present study aimed to investigate the efficacy of duckweed (Spirodela polyrhiza)-based multilayer floating constructed wetlan...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-12-01
|
| Series: | Nature-Based Solutions |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S277241152200012X |
| _version_ | 1811178648443551744 |
|---|---|
| author | Preeti Parihar Naveen Chand Surindra Suthar |
| author_facet | Preeti Parihar Naveen Chand Surindra Suthar |
| author_sort | Preeti Parihar |
| collection | DOAJ |
| description | Amendments and modifications in conventional methods are continuously required to make wastewater treatment cost-effective, easy to handle, and eco-friendly. Given that, the present study aimed to investigate the efficacy of duckweed (Spirodela polyrhiza)-based multilayer floating constructed wetland (CW) with wood biochar (BC), as carbon stock in the support matrix for treatment of septage effluent. For that four different setups: S+BC+DW (sand + BC + duckweed), S+BC (sand + BC); S (sand); DW (duckweed) were prepared using PVC plastic columns (30 cm length × 11 cm Ø) filled with support matrix and changes in effluent parameters i.e., biochemical oxygen demand (BOD), chemical oxygen demand (COD), total nitrogen (TN), ammonium N (NH4+-N), nitrate (NO3-N), phosphate (PO4−3), and sulphate (SO4−2) were monitored after each 24 h interval for 168 hr HRT. The maximum reduction in PO4−3, TN, NH4 +-N, BOD, COD, SO4−2 and NO3-N load was found to be 68.43 %, 64.29 %; 66.41 %, 81.87 %, 58.02 %, 60.48 %, and 64.45%, respectively in S+BC+DW setup. The performance of the studied CW setups was in the order: S+BC+DW> S+BC > S > DW. Phytoremediation assisted by BC-meditated adsorption and chemical oxidation could be the major mechanisms for septage effluent treatment in different CW setups. The results of the study could be beneficial for developing nature-based-low-cost septage treatment setups for rural areas under the decentralized wastewater treatment tools. |
| first_indexed | 2024-04-11T06:22:01Z |
| format | Article |
| id | doaj.art-9fa9fd4aa8f44b069b9924bdd92894d2 |
| institution | Directory Open Access Journal |
| issn | 2772-4115 |
| language | English |
| last_indexed | 2024-04-11T06:22:01Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nature-Based Solutions |
| spelling | doaj.art-9fa9fd4aa8f44b069b9924bdd92894d22022-12-22T04:40:32ZengElsevierNature-Based Solutions2772-41152022-12-012100020Septage effluent treatment using floating constructed wetland with Spirodela polyrhiza: Response of biochar addition in the support matrixPreeti Parihar0Naveen Chand1Surindra Suthar2School of Environment & Natural Resources, Doon University, Dehradun, 248001, Uttarakhand, IndiaEnvironmental Engineering Research Group, National Institute of Technology Delhi, New Delhi, 110040, IndiaSchool of Environment & Natural Resources, Doon University, Dehradun, 248001, Uttarakhand, India; Corresponding author.Amendments and modifications in conventional methods are continuously required to make wastewater treatment cost-effective, easy to handle, and eco-friendly. Given that, the present study aimed to investigate the efficacy of duckweed (Spirodela polyrhiza)-based multilayer floating constructed wetland (CW) with wood biochar (BC), as carbon stock in the support matrix for treatment of septage effluent. For that four different setups: S+BC+DW (sand + BC + duckweed), S+BC (sand + BC); S (sand); DW (duckweed) were prepared using PVC plastic columns (30 cm length × 11 cm Ø) filled with support matrix and changes in effluent parameters i.e., biochemical oxygen demand (BOD), chemical oxygen demand (COD), total nitrogen (TN), ammonium N (NH4+-N), nitrate (NO3-N), phosphate (PO4−3), and sulphate (SO4−2) were monitored after each 24 h interval for 168 hr HRT. The maximum reduction in PO4−3, TN, NH4 +-N, BOD, COD, SO4−2 and NO3-N load was found to be 68.43 %, 64.29 %; 66.41 %, 81.87 %, 58.02 %, 60.48 %, and 64.45%, respectively in S+BC+DW setup. The performance of the studied CW setups was in the order: S+BC+DW> S+BC > S > DW. Phytoremediation assisted by BC-meditated adsorption and chemical oxidation could be the major mechanisms for septage effluent treatment in different CW setups. The results of the study could be beneficial for developing nature-based-low-cost septage treatment setups for rural areas under the decentralized wastewater treatment tools.http://www.sciencedirect.com/science/article/pii/S277241152200012XBiocharPhytoremediation, Sand filtrationConstructed wetlandsCOD |
| spellingShingle | Preeti Parihar Naveen Chand Surindra Suthar Septage effluent treatment using floating constructed wetland with Spirodela polyrhiza: Response of biochar addition in the support matrix Nature-Based Solutions Biochar Phytoremediation, Sand filtration Constructed wetlands COD |
| title | Septage effluent treatment using floating constructed wetland with Spirodela polyrhiza: Response of biochar addition in the support matrix |
| title_full | Septage effluent treatment using floating constructed wetland with Spirodela polyrhiza: Response of biochar addition in the support matrix |
| title_fullStr | Septage effluent treatment using floating constructed wetland with Spirodela polyrhiza: Response of biochar addition in the support matrix |
| title_full_unstemmed | Septage effluent treatment using floating constructed wetland with Spirodela polyrhiza: Response of biochar addition in the support matrix |
| title_short | Septage effluent treatment using floating constructed wetland with Spirodela polyrhiza: Response of biochar addition in the support matrix |
| title_sort | septage effluent treatment using floating constructed wetland with spirodela polyrhiza response of biochar addition in the support matrix |
| topic | Biochar Phytoremediation, Sand filtration Constructed wetlands COD |
| url | http://www.sciencedirect.com/science/article/pii/S277241152200012X |
| work_keys_str_mv | AT preetiparihar septageeffluenttreatmentusingfloatingconstructedwetlandwithspirodelapolyrhizaresponseofbiocharadditioninthesupportmatrix AT naveenchand septageeffluenttreatmentusingfloatingconstructedwetlandwithspirodelapolyrhizaresponseofbiocharadditioninthesupportmatrix AT surindrasuthar septageeffluenttreatmentusingfloatingconstructedwetlandwithspirodelapolyrhizaresponseofbiocharadditioninthesupportmatrix |