ABSTRACT In a gap between two concentric cylinders, we discover that the small heavy particle settling velocity (Vs) is greater than its associated terminal (Vt) in featureless turbulence generated by counter-rotating inner and outer cylinders simultaneously. The peak enhancement of Vs occurs at St × (Vt/u′) ∼ 1, where u′ are, respectively, r.m.s. fluctuation Stokes number defined as ratio resp...

In this study, the ability of aerobic biogranulation process to remove organic matter, total nitrogen, and phosphorous from wastewater was investigated. The effect matter load on quality produced biogranules settling velocity generated biomass also Four different scenarios were studied in sequential batch bioreactors (SBR) identify best operating conditions. experimental setup consisted four co...

We develop and investigate an advection–diffusion-settling model of deep-sea mining collector plumes, building on the analysis midwater plumes in Part 1. In case deposition plays a predominant role controlling mass sediment suspension, thus setting extent plume. first discuss competition between settling, which leads to deposition, vertical turbulent diffusion, stretches plume vertically reduce...

Chitosan, a deacetylated derivative of chitin, is a biodegradable cationic polymer. Chitosan can be a potential substitute for aluminum salts and synthetic polyelectrolytes in water treatment because it can: (1) avoid the health effects from residual aluminum (III) and synthetic polymers; (2) produce biodegradable sludge; and (3) reuse the crab shell. Chitosan can be modified with various pretr...

Abstract. Natural particles are frequently applied in drinking water treatment processes fixed bed reactors, fluidised and sedimentation to clarify concentrate solids. When settle, it has been found that, terms of hydraulics, natural behave differently when compared perfectly round spheres. To estimate the terminal settling velocity single solid a liquid system, comprehensive collection equatio...