Improvement of Phosphorus Removal from Wastewater Through Fermentation of Low-Concentrated Wastewater Sludge and Increased Production of Volatile Fatty Acids
This article presents the results of a two-stage study: the first stage involved assessing the dependence of the increase or decrease in the concentration of volatile fatty acids (VFAs) on external factors and then assessing the relationship between the VFA concentration in the supernatant after fer...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-10-01
|
| Series: | Limnological Review |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2300-7575/24/4/28 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846103924633763840 |
|---|---|
| author | Elena Gogina Nikolay Makisha Igor Gulshin Anna Reshetova |
| author_facet | Elena Gogina Nikolay Makisha Igor Gulshin Anna Reshetova |
| author_sort | Elena Gogina |
| collection | DOAJ |
| description | This article presents the results of a two-stage study: the first stage involved assessing the dependence of the increase or decrease in the concentration of volatile fatty acids (VFAs) on external factors and then assessing the relationship between the VFA concentration in the supernatant after fermentation and the processing characteristics (temperature, mixing mode, alkalinity, pH, nitrogen and phosphorus content). The greatest increase in VFAs (content up to 285 mg/L in the supernatant) was achieved at a temperature in the range of 28 to 38 °C with constant mixing of the sludge. Based on the results of the second stage, a conclusion was made on the efficiency of using a particular substrate depending on the concentration of phosphorus phosphates in the incoming wastewater. The study results showed that 7.54 mg/L of phosphorus can be removed with a given probability (for activated sludge, raw sludge and wastewater). It is recommended to compensate for the excess of this concentration by dosing the acetic acid solution at a rate of 3800 meq/L of VFA per 1 mg/L of phosphorus phosphates. The literature does not contain any results of parallel studies of the operation of a controlled bioreactor with artificial external feeding and acidified VFA. The results of the study can be applied in planning sludge acidification systems in the technological scheme of wastewater treatment and sludge processing. |
| format | Article |
| id | doaj-art-4abf8c08a8ef477eb7bd26e5dc6cd307 |
| institution | Kabale University |
| issn | 2300-7575 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Limnological Review |
| spelling | doaj-art-4abf8c08a8ef477eb7bd26e5dc6cd3072024-12-27T14:36:23ZengMDPI AGLimnological Review2300-75752024-10-0124449150510.3390/limnolrev24040028Improvement of Phosphorus Removal from Wastewater Through Fermentation of Low-Concentrated Wastewater Sludge and Increased Production of Volatile Fatty AcidsElena Gogina0Nikolay Makisha1Igor Gulshin2Anna Reshetova3Laboratory of Water Purification and Wastewater Treatment, Research Institute of Building Physics, Russian Academy of Architecture and Construction Sciences, 21, Lokomotivny Drive, 127238 Moscow, RussiaResearch and Education Centre “Water Supply and Wastewater Treatment”, Moscow State University of Civil Engineering, 26, Yaroslaskoye Highway, 129337 Moscow, RussiaResearch and Education Centre “Water Supply and Wastewater Treatment”, Moscow State University of Civil Engineering, 26, Yaroslaskoye Highway, 129337 Moscow, RussiaLaboratory of Water Purification and Wastewater Treatment, Research Institute of Building Physics, Russian Academy of Architecture and Construction Sciences, 21, Lokomotivny Drive, 127238 Moscow, RussiaThis article presents the results of a two-stage study: the first stage involved assessing the dependence of the increase or decrease in the concentration of volatile fatty acids (VFAs) on external factors and then assessing the relationship between the VFA concentration in the supernatant after fermentation and the processing characteristics (temperature, mixing mode, alkalinity, pH, nitrogen and phosphorus content). The greatest increase in VFAs (content up to 285 mg/L in the supernatant) was achieved at a temperature in the range of 28 to 38 °C with constant mixing of the sludge. Based on the results of the second stage, a conclusion was made on the efficiency of using a particular substrate depending on the concentration of phosphorus phosphates in the incoming wastewater. The study results showed that 7.54 mg/L of phosphorus can be removed with a given probability (for activated sludge, raw sludge and wastewater). It is recommended to compensate for the excess of this concentration by dosing the acetic acid solution at a rate of 3800 meq/L of VFA per 1 mg/L of phosphorus phosphates. The literature does not contain any results of parallel studies of the operation of a controlled bioreactor with artificial external feeding and acidified VFA. The results of the study can be applied in planning sludge acidification systems in the technological scheme of wastewater treatment and sludge processing.https://www.mdpi.com/2300-7575/24/4/28wastewater treatmentphosphorus removalprefermentationeasily oxidizable organic mattervolatile fatty acids |
| spellingShingle | Elena Gogina Nikolay Makisha Igor Gulshin Anna Reshetova Improvement of Phosphorus Removal from Wastewater Through Fermentation of Low-Concentrated Wastewater Sludge and Increased Production of Volatile Fatty Acids Limnological Review wastewater treatment phosphorus removal prefermentation easily oxidizable organic matter volatile fatty acids |
| title | Improvement of Phosphorus Removal from Wastewater Through Fermentation of Low-Concentrated Wastewater Sludge and Increased Production of Volatile Fatty Acids |
| title_full | Improvement of Phosphorus Removal from Wastewater Through Fermentation of Low-Concentrated Wastewater Sludge and Increased Production of Volatile Fatty Acids |
| title_fullStr | Improvement of Phosphorus Removal from Wastewater Through Fermentation of Low-Concentrated Wastewater Sludge and Increased Production of Volatile Fatty Acids |
| title_full_unstemmed | Improvement of Phosphorus Removal from Wastewater Through Fermentation of Low-Concentrated Wastewater Sludge and Increased Production of Volatile Fatty Acids |
| title_short | Improvement of Phosphorus Removal from Wastewater Through Fermentation of Low-Concentrated Wastewater Sludge and Increased Production of Volatile Fatty Acids |
| title_sort | improvement of phosphorus removal from wastewater through fermentation of low concentrated wastewater sludge and increased production of volatile fatty acids |
| topic | wastewater treatment phosphorus removal prefermentation easily oxidizable organic matter volatile fatty acids |
| url | https://www.mdpi.com/2300-7575/24/4/28 |
| work_keys_str_mv | AT elenagogina improvementofphosphorusremovalfromwastewaterthroughfermentationoflowconcentratedwastewatersludgeandincreasedproductionofvolatilefattyacids AT nikolaymakisha improvementofphosphorusremovalfromwastewaterthroughfermentationoflowconcentratedwastewatersludgeandincreasedproductionofvolatilefattyacids AT igorgulshin improvementofphosphorusremovalfromwastewaterthroughfermentationoflowconcentratedwastewatersludgeandincreasedproductionofvolatilefattyacids AT annareshetova improvementofphosphorusremovalfromwastewaterthroughfermentationoflowconcentratedwastewatersludgeandincreasedproductionofvolatilefattyacids |