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Performance Evaluation of Filter Cloth Washing Water Recycling at SOMAÏR, Niger
Research Journal of Ecology and Environmental Sciences
| Vol 6, Issue 1
Table 8. Main operational factorsaffecting the performance of the water recycling circuit
| Operational issue | Main cause | Effect on recycling performance | Recommended action |
| Fine particle bypass | A large proportion of suspended particles were smaller than the vibrating drainerscreen aperture (250 μm) | Increased transport of fine solids into Decanter 1 and accelerated sediment accumulation | Optimize screen aperture or introduce multi-stage screening to improve fine particle removal |
| Screen perforation/damage | Mechanical wear and deterioration of the vibrating drainer screening surface during operation | Reduced screening efficiency and increased passage of suspended solids to downstreamclarification units | Regular inspection, maintenance, and replacement ofdamaged screening surfaces |
| Vibrating system malfunction | Failure or unstable operation of the excitation mechanism | Poor separation efficiency and unstable solid–liquid separation performance | Strengthen preventive maintenance of vibrating components and monitorequipment condition |
| Sludge removal limitation | Insufficient removal of accumulatedsediments due to operational constraints | Reduction of effective settling volume in Decanter 1 and interruption of the recycling circuit | Improve sludge discharge management and establish periodic sediment monitoring |