Water samples were collected from a private concrete pond in Ijiba layout, off Ada Road, Akure, Ondo State, Nigeria. Microbiological analyses were carried out on the water samples using standard methods. Mud water was subjected to purification by Cladophora sp. isolated from the pond water. The physiochemical analyses of the mud water before and after purification were carried out using standard methods. The algae species isolated and identified from the pond water were Oscillatoria sp., Chlorella vulgaris, Spirogyra sp., Euglena sp., Cladophora sp. and Oedogonium sp., Scenesdesmus quadricauda, Ankistrodesmus falcatus, Cyclotella meneghiana, Cylindrocytis sp. Coccomyxa sp. and Chlamydomonas sp. The bacteria isolated and identified from the pond water were Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Proteus sp., Enterobacter sp., Klebisiella sp. while Fungi isolated were Aspergillus fumigatus, A. flavus, Fusarium sp. and Geotrichum sp. The biological oxygen demand (BOD) and chemical oxygen demand (COD) values of the mud water were observed before purification as 61.50 ±0.12e mg/l and 45.63± 0.09d mg/l respectively. The pH of the water was observed to be 7.62, the conductivity was 240 uS/cm, alkalinity was 332.00mg/ml, turbidity was 14.47NTU and hardness was 166.00mg/ml. After purification, the COD and BOD of the mud water was observed to reduce to 3.50 mg/l and 1.23mg/l respectively. The pH of the water increased to 8.07, while the turbidity and hardness reduced significantly to 0.72NTU and 126.0mg/l respectively. The physicochemical properties of the mud water after purification and in particular, the reduction in the values of BOD, COD and increase in pH of the mud water clearly indicates that Cladophora sp. was involved in the purification process.
Keywords: Algae, Mud water, Purification, Pond water, Cladophora sp.,
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