Najihah Abdul Rashid
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Preferred name
Najihah Abdul Rashid
Official Name
Najihah Abdul , Rashid
Alternative Name
Rashid, Najihah Abdul
Rashid, N. A.
Rashid, N.
Main Affiliation
Scopus Author ID
57203142293
Researcher ID
HVA-6875-2023

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Effect of Cycling Time Strategy on the Treatment of Industrial Latex Wastewater with Granular Sludge

2020-07-09 , Najihah Abdul Rashid , Abdul Latif Abdul Rani , Omar M.F. , Abdullah M.A.H.

Effects of cycling time on the performance of granular sludge in sequencing batch reactors (SBR) were evaluated. Two reactors, reactor 1 (R1) and reactor 2 (R2) was introduced to industrial wastewater with varying chemical oxygen demand (COD) loadings from as low as 0.01 to 0.28 kgCOD/m3/d. However granules in R1 utilizes cycling time of 24 hours whilst R2 utilizes cycling time of 4 hours. The overall performance for both reactors were excellent, where COD removal efficiency was kept at about 78 % to 98 % removal. Although higher COD removal was observed for both reactors, granulation did not occur in R1 when applying cycling time of 24 hours. In contrast to R2, decrement of cycling time to 4 hours promotes the growth of dense and structured sludge granules.

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Aerobic granules cultivated using industrial rubber wastewater: Effect of size distribution and Performance of granules.

2020-12-18 , Najihah Abdul Rashid , Abdul Rani A.L. , Omar M.F. , Abdullah M.A.H.

Sequential batch reactors (SBR) have been successfully developed granular sludge using industrial rubber wastewater on a cylindrical shaped SBR. SBR was introduced to industrial wastewater with varying chemical oxygen demand (COD) loadings from as low as 0.01 to 0.28 kgCOD/m3/d. First phase of experiment utilized 24 hours cycle time whilst second phase of experiment utilized 4 hours cycle time. Granules were successfully developed at the second phase (4 hours) of experiment. Fortunately, the overall performance for both cycles were excellent. COD removal efficiency throughout the experiment was kept at about 78 % to 98 %. Although higher COD removal was observed for both cycle, granulation did not occur in the first phase (24 hours). Decrement of cycling time to 4 hours promotes the growth of dense and structured sludge granules.

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