A modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plants
In the pursuit of a treatment approach that is both cost-effective and environmental-friendly, the applicability of microscreen (MS) techniques coupled with a primary sedimentation tank (PST) as a physical advanced primary treatment (APT) to enhance the removal of particulate organic carbon (POC) fr...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2024-02-01
|
| Series: | Water Science and Technology |
| Subjects: | |
| Online Access: | http://wst.iwaponline.com/content/89/4/1094 |
| _version_ | 1797200752576299008 |
|---|---|
| author | Behnam Askari Lasaki Peter Maurer Harald Schönberger |
| author_facet | Behnam Askari Lasaki Peter Maurer Harald Schönberger |
| author_sort | Behnam Askari Lasaki |
| collection | DOAJ |
| description | In the pursuit of a treatment approach that is both cost-effective and environmental-friendly, the applicability of microscreen (MS) techniques coupled with a primary sedimentation tank (PST) as a physical advanced primary treatment (APT) to enhance the removal of particulate organic carbon (POC) from municipal wastewater was investigated. A pilot unit, including a modified MS, adjustable to different meshes (including 20 and 15 μm) was operated continuously downstream to the PST at the Büsnau wastewater treatment plant in Stuttgart, Germany, and monitored for more than half a year. A strategy involving time-dependent backwashing and recirculation of MS permeate was employed to remove as much POC as possible from primarily treated wastewater, thereby extending the application of the MS. The optimal configuration, PST + 15-μm MS, achieved maximum removal efficiencies of 90% for turbidity, 90% for total suspended solids (TSS), and 80% for total chemical oxygen demand (TCOD). These results are significant, as comparable removal levels for these parameters were conventionally achieved using less eco-friendly methods such as physiochemical APT, including coagulation–flocculation with iron or aluminum salts followed by microscreening or sedimentation. However, this study's findings ascertained that solo physical APT applications could produce equivalent effluent quality with a much smaller footprint while keeping the advanced primary treated wastewater suitable for biological treatment.
HIGHLIGHTS
Applied APT demonstrated exceptional wastewater constituents removal efficiencies up to 90%.;
APT achieved equivalent effluent quality with a substantially smaller environmental footprint, contributing to the advancement of sustainable water treatment practices.;
The APT was shown to be integratable into existing wastewater treatment processes while preserving the effluent quality for subsequent treatment stages.; |
| first_indexed | 2024-04-24T07:36:39Z |
| format | Article |
| id | doaj.art-c1a9fa5a7794484faff46f5db9f7617f |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-24T07:36:39Z |
| publishDate | 2024-02-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-c1a9fa5a7794484faff46f5db9f7617f2024-04-20T05:54:35ZengIWA PublishingWater Science and Technology0273-12231996-97322024-02-018941094110510.2166/wst.2024.044044A modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plantsBehnam Askari Lasaki0Peter Maurer1Harald Schönberger2 Institute for Sanitary Engineering, Water Quality and Solid Waste Management (ISWA), University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany Institute for Sanitary Engineering, Water Quality and Solid Waste Management (ISWA), University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany Institute for Sanitary Engineering, Water Quality and Solid Waste Management (ISWA), University of Stuttgart, Bandtäle 2, 70569 Stuttgart, Germany In the pursuit of a treatment approach that is both cost-effective and environmental-friendly, the applicability of microscreen (MS) techniques coupled with a primary sedimentation tank (PST) as a physical advanced primary treatment (APT) to enhance the removal of particulate organic carbon (POC) from municipal wastewater was investigated. A pilot unit, including a modified MS, adjustable to different meshes (including 20 and 15 μm) was operated continuously downstream to the PST at the Büsnau wastewater treatment plant in Stuttgart, Germany, and monitored for more than half a year. A strategy involving time-dependent backwashing and recirculation of MS permeate was employed to remove as much POC as possible from primarily treated wastewater, thereby extending the application of the MS. The optimal configuration, PST + 15-μm MS, achieved maximum removal efficiencies of 90% for turbidity, 90% for total suspended solids (TSS), and 80% for total chemical oxygen demand (TCOD). These results are significant, as comparable removal levels for these parameters were conventionally achieved using less eco-friendly methods such as physiochemical APT, including coagulation–flocculation with iron or aluminum salts followed by microscreening or sedimentation. However, this study's findings ascertained that solo physical APT applications could produce equivalent effluent quality with a much smaller footprint while keeping the advanced primary treated wastewater suitable for biological treatment. HIGHLIGHTS Applied APT demonstrated exceptional wastewater constituents removal efficiencies up to 90%.; APT achieved equivalent effluent quality with a substantially smaller environmental footprint, contributing to the advancement of sustainable water treatment practices.; The APT was shown to be integratable into existing wastewater treatment processes while preserving the effluent quality for subsequent treatment stages.;http://wst.iwaponline.com/content/89/4/1094advanced primary treatmentcodmicroscreeningparticulate organic carbonsettlingtss |
| spellingShingle | Behnam Askari Lasaki Peter Maurer Harald Schönberger A modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plants Water Science and Technology advanced primary treatment cod microscreening particulate organic carbon settling tss |
| title | A modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plants |
| title_full | A modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plants |
| title_fullStr | A modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plants |
| title_full_unstemmed | A modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plants |
| title_short | A modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plants |
| title_sort | modified integrated physical advanced primary treatment to enhance particulate organic carbon removal in municipal wastewater treatment plants |
| topic | advanced primary treatment cod microscreening particulate organic carbon settling tss |
| url | http://wst.iwaponline.com/content/89/4/1094 |
| work_keys_str_mv | AT behnamaskarilasaki amodifiedintegratedphysicaladvancedprimarytreatmenttoenhanceparticulateorganiccarbonremovalinmunicipalwastewatertreatmentplants AT petermaurer amodifiedintegratedphysicaladvancedprimarytreatmenttoenhanceparticulateorganiccarbonremovalinmunicipalwastewatertreatmentplants AT haraldschonberger amodifiedintegratedphysicaladvancedprimarytreatmenttoenhanceparticulateorganiccarbonremovalinmunicipalwastewatertreatmentplants AT behnamaskarilasaki modifiedintegratedphysicaladvancedprimarytreatmenttoenhanceparticulateorganiccarbonremovalinmunicipalwastewatertreatmentplants AT petermaurer modifiedintegratedphysicaladvancedprimarytreatmenttoenhanceparticulateorganiccarbonremovalinmunicipalwastewatertreatmentplants AT haraldschonberger modifiedintegratedphysicaladvancedprimarytreatmenttoenhanceparticulateorganiccarbonremovalinmunicipalwastewatertreatmentplants |