Effects of Ultrasound on Must Hospital Composite Wastewaters.

Abstract

This research examined the effect sonic and ultrasonic sound waves had; (1) in an ozone reactor during the oxidation of synthetic MUST Hospital Composite ultrafiltration (UF) and reverse osmosis (RO) permeates using low volumetric gas flow rates (i.e., volume of gas per minute per volume of liquid (VVM)) of 0.1, 0.2, and 0.4 VVM, (2) on the mass transfer of oxygen into solution at the above VVM's, and (3) on the air-stripping of UF permeates at 45 C. Kinetic mathematical models were derived to express the rate of COD and TOC destruction as a function of ozone concentration, VVM and organic concentration. These models can be used for design and scale-up of similar ozone-sound reactors. Insonation was found to increase system overall oxygen mass transfer coefficients in the range of 1% to 36% over the no sound condition. Improvements in air-stripping rates of organics in UF permeates were noted when sound waves were employed over previously reported plain air-stripping experiments.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1977
Accession Number
ADA055723

Entities

People

  • Raymond A. Sierka

Organizations

  • University of Arizona

Tags

Communities of Interest

  • Biomedical
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Air
  • Chemical Synthesis
  • Chemistry
  • Dermatologic Agents
  • Flow
  • Flow Rate
  • Gas Flow
  • Mass Transfer
  • Mathematical Models
  • Measurement
  • Osmosis
  • Oxidation
  • Reverse Osmosis
  • Sound Waves
  • Ultrasounds
  • Waves

Fields of Study

  • Environmental science

Readers

  • Combustion science or combustion engineering.
  • Environmental Engineering