Aerobic mesophilic treatment of potato industry wastewater
An evaluation of a laboratory-scale aerobic method for the treatment of potato-processing wastewater at 37°C was investigated. Composite samples were collected to establish batch variations. The wastewater was characterized for Chemical Oxygen Demand (COD), Permanganate Value (PV), Total Solids (...
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Academic Journals
2023
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| Online Access: | https://cris.library.msu.ac.zw//handle/11408/5605 https://academicjournals.org/journal/IJWREE/article-full-text-pdf/6DD1FF654165 |
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| author | Manhokwe S. Parawira W. Zvidzai C. |
| author2 | Midlands State University, Department of Food Science and Nutrition, P. Bag 9055, Gweru, Zimbabwe |
| author_facet | Midlands State University, Department of Food Science and Nutrition, P. Bag 9055, Gweru, Zimbabwe Manhokwe S. Parawira W. Zvidzai C. |
| author_sort | Manhokwe S. |
| collection | DSpace |
| description | An evaluation of a laboratory-scale aerobic method for the treatment of potato-processing wastewater
at 37°C was investigated. Composite samples were collected to establish batch variations. The
wastewater was characterized for Chemical Oxygen Demand (COD), Permanganate Value (PV), Total
Solids (TS), phosphates and pH over a period of 6 months. Wastewater with an average of 6.8 g COD/l,
high concentration of total solids (up to 6725 mg/l), and low pH was subjected to active sludge
treatment in a Continuously Stirred Tank Reactor (CSTR) with Organic Loading Rates (OLRs) gradually
increased from 3.4 to 12.1 g COD/litre/day. Stepwise increase in OLR reduced average COD reduction
from 86% at 3.4 g COD/litre/day to 76% at 12.1 g COD/litre/day. High rates of treatment efficiency (TE)
were recorded at low OLRs (<6.8 g COD/litre day) with a notable pH of the effluent increasing from 4 to
neutral values. TS reduction was achieved at 57% at HRT of 2 d. This study indicated that biological
methods can be used for treatment of potato-processing wastewater in order to reduce the organic load
and other pollutants acceptable levels for municipal discharge. |
| format | research article |
| id | ir-11408-5605 |
| institution | My University |
| language | English |
| publishDate | 2023 |
| publisher | Academic Journals |
| record_format | dspace |
| spelling | ir-11408-56052023-05-04T12:03:08Z Aerobic mesophilic treatment of potato industry wastewater Manhokwe S. Parawira W. Zvidzai C. Midlands State University, Department of Food Science and Nutrition, P. Bag 9055, Gweru, Zimbabwe Bindura University of Science Education, P. Bag 1020, Bindura, Zimbabwe. Chinhoyi University of Technology, Department of Biotechnology, P. Bag 7724, Chinhoyi, Zimbabwe. Potato wastewater Biotreatment Mesophilic Continuous stirred tank reactor (CSTR) Activated sludge. An evaluation of a laboratory-scale aerobic method for the treatment of potato-processing wastewater at 37°C was investigated. Composite samples were collected to establish batch variations. The wastewater was characterized for Chemical Oxygen Demand (COD), Permanganate Value (PV), Total Solids (TS), phosphates and pH over a period of 6 months. Wastewater with an average of 6.8 g COD/l, high concentration of total solids (up to 6725 mg/l), and low pH was subjected to active sludge treatment in a Continuously Stirred Tank Reactor (CSTR) with Organic Loading Rates (OLRs) gradually increased from 3.4 to 12.1 g COD/litre/day. Stepwise increase in OLR reduced average COD reduction from 86% at 3.4 g COD/litre/day to 76% at 12.1 g COD/litre/day. High rates of treatment efficiency (TE) were recorded at low OLRs (<6.8 g COD/litre day) with a notable pH of the effluent increasing from 4 to neutral values. TS reduction was achieved at 57% at HRT of 2 d. This study indicated that biological methods can be used for treatment of potato-processing wastewater in order to reduce the organic load and other pollutants acceptable levels for municipal discharge. 7 7 92 100 2023-05-04T12:03:07Z 2023-05-04T12:03:07Z 2015-07 research article https://cris.library.msu.ac.zw//handle/11408/5605 https://academicjournals.org/journal/IJWREE/article-full-text-pdf/6DD1FF654165 en International Journal of Water Resources and Environmental Engineering 2141-6613 open Academic Journals |
| spellingShingle | Potato wastewater Biotreatment Mesophilic Continuous stirred tank reactor (CSTR) Activated sludge. Manhokwe S. Parawira W. Zvidzai C. Aerobic mesophilic treatment of potato industry wastewater |
| title | Aerobic mesophilic treatment of potato industry wastewater |
| title_full | Aerobic mesophilic treatment of potato industry wastewater |
| title_fullStr | Aerobic mesophilic treatment of potato industry wastewater |
| title_full_unstemmed | Aerobic mesophilic treatment of potato industry wastewater |
| title_short | Aerobic mesophilic treatment of potato industry wastewater |
| title_sort | aerobic mesophilic treatment of potato industry wastewater |
| topic | Potato wastewater Biotreatment Mesophilic Continuous stirred tank reactor (CSTR) Activated sludge. |
| url | https://cris.library.msu.ac.zw//handle/11408/5605 https://academicjournals.org/journal/IJWREE/article-full-text-pdf/6DD1FF654165 |
| work_keys_str_mv | AT manhokwes aerobicmesophilictreatmentofpotatoindustrywastewater AT parawiraw aerobicmesophilictreatmentofpotatoindustrywastewater AT zvidzaic aerobicmesophilictreatmentofpotatoindustrywastewater |