NATURAL WATER DEFERRIZATION BY DEEP AERATION METHOD

How does deep water rice solve its aeration problem.

In partially flooded deep water rice (Oryza sativa L. cv Habiganj Aman II), continuous air layers trapped between the hydrophobic, corrugated surface of the leaf blades and the surrounding water constitute the major path of aeration. The conduction of gases through the internal air spaces of the leaf is negligible compared to the conduction of gases through the external air layers. The total vo...

Measurements of natural uranium concentration in Caspian Sea and Persian Gulf water in by laser flourimetric method

  ABSTRACT   Background : Natural uranium exists in earth crust and seawater. The concentration of uranium might increase by human manipulation or geological changes. The aim of this study was to verify susceptibility of laser flourimetry method to determine the uranium concentration in Caspian Sea and Persian Gulf water.   Materials and Methods : Laser flourimetric method was used to determine...

DAIRY WASTE TREATMENT by aeration

Aeration and de-aeration at bottom aeration devices on spillways

Aeration devices are introduced along chute spillways and at bottom outlets to prevent cavitation damage in high velocity flows. Bottom aerators are characterised by large quantities of air entrained along the jet interfaces but also by a strong de-aeration process near the impact of the water jet with the spillway bottom. In this paper, the aeration and de-aeration occurring respectively in th...

Demonstration of Mass Transfer Using Aeration of Water

An experiment was developed using aeration of water for demonstrating the phenomenon of mass transfer. The demonstration was designed to provide both conceptual and practical insight of the mass transfer process. A bubble column fitted with a sieve tray was used to carry out the experiment. The air flow rate and hole size of the sieve tray were varied. Mass transfer coefficient was obtained fro...