Diffuser (sewage)

About: Diffuser (sewage) is a research topic. Over the lifetime, 6487 publications have been published within this topic receiving 40404 citations.

Liquid aeration apparatus and wastewater treatment method

Abstract: A liquid aeration apparatus includes a vessel having sidewalls, a closed bottom end and, a liquid outlet being provided at or near the upper end. The sidewalls define a cross-sectional interior open area with a vertical depth. An air diffuser is positioned within the interior open area of the vessel . A liquid intake conduit is positioned with an inlet end located at or near the upper end of the vessel and an outlet located near the bottom end of the vessel.

Mixing Zone Analysis for Coastal Wastewater Discharge

Abstract: A case study of the conceptual design and mixing zone analysis for an ocean outfall to discharge a dense wastewater is summarized. The recommended diffuser consists of upwardly inclined nozzles that discharge the effluent as high-velocity jets resulting in high dilution. Mixing by oceanic diffusion increases the dilution further as the wastefield is transported to the edge of the mixing zone. Local currents are highly variable, resulting in intermittent transport of the wastefield to any location. This is analyzed by computing the spatial variation of the “visitation frequency,” and the minimum and harmonic average dilutions of the wastefield. The visitation frequency decreases quickly and the average dilution increases rapidly with distance from the diffuser, indicating that any environmental effects of the discharge will be confined to a small area. Maximum and average values of chemical concentration at the mixing zone boundary were computed to assess compliance with acute and chronic water quality cri...

Method and Apparatus for Quantification of Optical Properties of Superficial Volumes Using Small Source-to-Detector Separations

Abstract: A probe for obtaining quantitative optical properties and chromophore concentrations of tissue components in tissue in-vivo at superficial depths and at source-detector separations of 5 mm or less includes a source fiber providing light to expose the tissue, a diffuser layer into which light from the source fiber is directed and then from the diffuser layer to and/or into the tissue, and a detector fiber arranged relative to the diffuser layer for detecting backscattered and/or reflected light returned from the tissue without transmission through the diffuser layer.