Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon
Conventional wastewater treatment processes require extensive energy inputs for their operations. Biologically enhanced primary treatment (BEPT) is a promising technology to capture incoming organics that may be utilized to produce biogas and potentially hydrogen with further downstream processing....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/14/23/3825 |
| _version_ | 1797462073431556096 |
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| author | Muhammad Rizwan Azhar Paul Nolan Keith Cadee Mehdi Khiadani |
| author_facet | Muhammad Rizwan Azhar Paul Nolan Keith Cadee Mehdi Khiadani |
| author_sort | Muhammad Rizwan Azhar |
| collection | DOAJ |
| description | Conventional wastewater treatment processes require extensive energy inputs for their operations. Biologically enhanced primary treatment (BEPT) is a promising technology to capture incoming organics that may be utilized to produce biogas and potentially hydrogen with further downstream processing. This study involved a biologically enhanced primary treatment (BEPT) of raw wastewater at bench and pilot-scale using activated sludge (AS) addition and dissolved air flotation (DAF) using raw wastewater at a municipal wastewater facility in Western Australia with average chemical oxygen demand of ~800 mg/L. The results of pilot-scale testing showed an improved removal performance for total chemical oxygen demand (COD-T), soluble chemical oxygen demand (COD-S), and total suspended solids (TSS) compared to conventional primary treatment (PT). Specifically, average COD-T, COD-S and TSS removals for BEPT were 33.3%, 13.5% and 45%, respectively which was 10%, 100% and 6% higher than PT. Moreover, the sludge produced from BEPT had a high solids content of 4.8 g/L, which might not need further thickening prior to anaerobic digestion. It is important to note that no chemicals were used during BEPT testing, which makes the process very cost-effective. |
| first_indexed | 2024-03-09T17:28:20Z |
| format | Article |
| id | doaj.art-c8f3fbb31d0f4af591dda3ff0a3ba83e |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T17:28:20Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-c8f3fbb31d0f4af591dda3ff0a3ba83e2023-11-24T12:31:47ZengMDPI AGWater2073-44412022-11-011423382510.3390/w14233825Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture CarbonMuhammad Rizwan Azhar0Paul Nolan1Keith Cadee2Mehdi Khiadani3School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6025, AustraliaWater Corporation, 629 Newcastle Street, Leederville, WA 6007, AustraliaWater Corporation, 629 Newcastle Street, Leederville, WA 6007, AustraliaSchool of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6025, AustraliaConventional wastewater treatment processes require extensive energy inputs for their operations. Biologically enhanced primary treatment (BEPT) is a promising technology to capture incoming organics that may be utilized to produce biogas and potentially hydrogen with further downstream processing. This study involved a biologically enhanced primary treatment (BEPT) of raw wastewater at bench and pilot-scale using activated sludge (AS) addition and dissolved air flotation (DAF) using raw wastewater at a municipal wastewater facility in Western Australia with average chemical oxygen demand of ~800 mg/L. The results of pilot-scale testing showed an improved removal performance for total chemical oxygen demand (COD-T), soluble chemical oxygen demand (COD-S), and total suspended solids (TSS) compared to conventional primary treatment (PT). Specifically, average COD-T, COD-S and TSS removals for BEPT were 33.3%, 13.5% and 45%, respectively which was 10%, 100% and 6% higher than PT. Moreover, the sludge produced from BEPT had a high solids content of 4.8 g/L, which might not need further thickening prior to anaerobic digestion. It is important to note that no chemicals were used during BEPT testing, which makes the process very cost-effective.https://www.mdpi.com/2073-4441/14/23/3825chemical oxygen demanddissolved air flotationpilot scaleenhanced primary treatmentwastewater |
| spellingShingle | Muhammad Rizwan Azhar Paul Nolan Keith Cadee Mehdi Khiadani Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon Water chemical oxygen demand dissolved air flotation pilot scale enhanced primary treatment wastewater |
| title | Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon |
| title_full | Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon |
| title_fullStr | Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon |
| title_full_unstemmed | Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon |
| title_short | Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon |
| title_sort | chemical free biologically enhanced primary treatment of raw wastewater for improved capture carbon |
| topic | chemical oxygen demand dissolved air flotation pilot scale enhanced primary treatment wastewater |
| url | https://www.mdpi.com/2073-4441/14/23/3825 |
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