Accession Number : ADA301432

Title :   Hydrogen Sulfide Generation in Shipboard Oily-Water Waste. Part 3. Ship Factors,

Corporate Author : DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)

Personal Author(s) : Hodgeman, Daryl K. ; Fletcher, Lyn E. ; Upsher, F. J.

PDF Url : ADA301432

Report Date : APR 1995

Pagination or Media Count : 44

Abstract : The chemical and microbiological composition of bilge-water in ships of the Royal Australian Navy has been investigated in relation to the formation of hydrogen sulfide by sulfate-reducing bacteria. Sulfate-reducing bacteria were found in most ships in populations up to 800,000 per mL. Sulfate in the wastes is provided by sea-water. Sea-water constitutes up to 60% (median 20%) of the wastes analysed. Evidence for generation of hydrogen sulfide in the ships was found directly as sulfide or indirectly as depressed sulfate concentrations. The low levels of sulfide found in bilge-water from machinery spaces suggested the ventilation systems were effectively removing the gas from the working area. The effect of storage of the wastes under conditions which simulated the oily- water holding tanks of ships were also investigated. Some wastes were found to produce large quantities of hydrogen sulfide on storage. The wastes that failed to produce hydrogen sulfide were investigated to identify any specific nutritional deficiencies. Some organic substances present in bilge-water, such as lactate or biodegradable cleaning agents, and phosphate strongly influenced the generation of hydrogen sulfide in stored oily-water wastes. jg p.3

Descriptors :   *SHIPS, *WASTE WATER, *SHIPBOARD, *OIL WASTES, *HYDROGEN SULFIDE, BACTERIA, NAVY, VENTILATION, CHEMICAL COMPOSITION, ORGANIC MATERIALS, LOW LEVEL, MACHINES, CLEANING COMPOUNDS, STORAGE, SULFATES, AUSTRALIA, SULFIDES, MICROBIOLOGY, PHOSPHATES, LACTATES, BIODETERIORATION, REDUCTION(CHEMISTRY).

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Marine Engineering
      Solid Wastes Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE