Rotating cylindrical filtration displays significantly reduced plugging of filter pores and build-up of a cake layer, but the number and range of parameters that can be adjusted complicates the design of these devices. Twelve individual parameters were investigated experimentally by measuring the build-up of particles on the rotating cylindrical filter after a fixed time of operation. The build...

For solid–liquid separation, filter meshes are still used across large areas today, as they offer a cost-effective alternative, for example, compared to membranes. However, particle interaction leads continuous blocking of the pores, which lowers flow rate mesh and reduces its lifetime. This can be remedied by aids. In precoat filtration, these provide an already fully formed cake on fabric, ac...

One major challenge in utilization of ultrafiltration (UF) membrane for wastewater treatment is its inevitable tendency biofouling (from biomolecules to microorganisms). To overcome this challenge, nanostructured cellulose membranes with hydrophilic surface and high porosity (∼80% without pressurization) was demonstrated study. The consisted a lyocell microfiber scaffold infused nanofibers (CNF...

Membrane fouling in membrane bioreactors (MBR) is caused by cake formation on the surface, mainly attributed to suspended solids, and also by surface adsorption connected with pore blocking, attributed to soluble components of activated sludge. In this study, long-term experiments were carried out in sub-critical conditions with frequent backwashing, and the nature of fouling was investigated. ...

The present study shows a method to recover lead metal from wastewater of wet scrubber in secondary lead smelter. The wastewater is loaded with 42,000 ppm of insoluble lead compounds (TSP) submicron in diameter. The technical background benefits the use of cationic polyfloc solution to flocculate these colloidal solids before press filtration. The polymer solution is injected in the wastewater ...

This study aims to investigate the potential of nanoparticle retention of ultrafi ltration (UF) multichannel hollow fiber membrane. Filtration experiments of fl uorescent silica nanoparticles (NPs) (10 and 100 nm) and CdTe quantum dots (1.5 nm) suspensions were carried out under diff erent operating conditions to analyze the retention rate (RT), the fouling zone and the...

The current study analyses the performance of deep sand filtration of greywater from an office building and the performance of a combined physicochemical process comprising of coagulation, sedimentation and filtration. Raw greywater quality exhibited very high variability with average turbidity of 35 NTU, and TSS, COD(t), and BOD of 45, 240, 75 mg/l respectively. The stand-alone filter removed ...

Dehydration is a critical step in many food processes. In this paper, we propose an original strategy, based on experiments and modelling, to evaluate the performance of compression dewatering cassava help design equipment. The various grated roots was experimentally studied through 42 filtration–consolidation cell pressure range 4–21 bar. evaluated terms moisture content limit kinetics. Each e...