University of Khartoum

Guneid Sugar Wastewater Treatment by Biological Method

Guneid Sugar Wastewater Treatment by Biological Method

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Title: Guneid Sugar Wastewater Treatment by Biological Method
Author: Mohamed, Mohamed Mahmoud Twfeg
Abstract: This study aimed to treat alguneid sugar factory industrial wastewater flowing in the Blue Nile by operating a bench scale experimental unit and utilizing the obtained data to design stabilization pond unit to treat alguneid sugar factory wastewater, and then find out the positives and negatives effects on neighboring living populations. Secondary data were collected through review of factory reports, records and previous studies relevant to this study. A sample of factory wastewater was used to operate a bench scale simulation model of ponds composed of three small basins, anaerobic, facultative and aerobic ponds respectively, this setup was necessary in order to understand how the biological treatment process works First basin was 17 cm high and with an average surface area of 31 cm2 , volume of basin 527 cm3 . The second basin was 7 cm high and with an average surface area 30.5 cm2 , volume of basin 213.5 cm3. The third basin was 5 cm high and with an average surface area 29 cm2 , volume of basin 145 cm3. Retention time was 13 days in anaerobic basin , 21 days in the facultative basin and 10 days in the aerobic basin. Samples were collected after each stage. After conducting tests the results from the three basins proved the success of the treatment unit. Wastewater pollution decreased to the permissible limits. Chemical oxygen demand (COD) decreased from 9600 mg/L to 274.65 mg/L , biochemical oxygen demand(BOD) decreased from 3650 mg/L to 30.75 mg/L , total suspended solids(TSS) decreased from 300 mg/L to 40 mg/L and the total organic nitrogen fluctuated up and down until settled at 2.91 mg/L. After that the obtained data and results were used to design full scale treatment plant. Observed negative effects were odors and breeding of flies and insects during and after treatment in the model. The study recommends the need for detailed design of the plant to work efficiently and try to avoid the negative effects, and find appropriate ways to dispose of sludge formed during the treatment process.
URI: http://khartoumspace.uofk.edu/handle/123456789/20295
Date: 2016-04-11


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