Nutrients Enrichment and Process Repercussions in Hybrid Microfiltration Osmotic Membrane Bioreactor: A Guideline for Forward Osmosis Development Based on Lab-Scale Experience

摘要: The effects of reverse salt diffusion through a forward osmosis membrane were studied in microfiltration osmotic bioreactor. reactor was used to treat and simultaneously concentrate nutrients from wastewater. system operated at different draw solution concentrations, leading varying salinity conditions. A relatively low, yet stable flux observed regardless increasing conductivities 10 50 mS cm−1. substantial increase sludge conductivity 5.7 19.8 cm−1 during the operation. Batch transmembrane pressure-step experiments showed decline filtration properties with buildup due deflocculation associated release protein carbohydrate fractions extracellular polymeric substances. Mathematical simulations that accumulation total dissolved solids could mainly be attributed salts rather than by enrichment incoming when membrane’s permeability high water low. Ideally, below 0.010 L m−2 h−1 effective above 0.13 bar−1 are crucial ensure enhanced nutrient reduce pressure, microbial inactivation, fouling.