STP851

    Disposal of Oil-Containing Sludges on Farmlands

    Published: Jan 1984


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    Abstract

    The response of soils and plants to oil-containing sludges was studied by pot, small plot, and field experiments. The objective was to develop a simple method of farmland disposal without detrimental effects on the environment.

    Dewatered sludge from a petroleum storage plant, in combination with nitrogen fertilizer, was found most suited to farmland disposal. The sludge was applied to sandy soil at rates from 3 to 8 g oil per kilogram of soil, and during a single growing season (six months) 60 to 90% of the oil was decomposed. No oil was detected below a 60-cm depth. Some physical properties of the soil, particularly the texture and water-retaining capacity, were improved. The plants were analyzed for protein, phosphate, and potassium oxide and found to have suffered no detriment and no loss in crop yield. The method of disposal by conventional agrotechnical operations proved environmentally safe and economically superior to other alternatives.

    Keywords:

    petroleum refineries, liquid hydrocarbons, oil-containing sludges, fertilizers, agriculture, soil texture, groundwater, water budget, biological activity, bacteria, fungi, yeast mould, nitrogen-binding bacteria, actinomyces, azobacter, oil-decomposing bacteria, fertility, indicator plant, maize, hybar, sunflower, quality analysis, environmental protection, hazardous wastes, industrial wastes


    Author Information:

    Mucsy, G
    Civil engineer and senior research engineer, and chemist-biologist and research associate, Research Centre for Water Resources Development, Budapest,

    Kránicz-Pap, E
    Civil engineer, agricultural engineer, and senior research engineer, Keszthely University of Agriculture, Mosonmagyaróvár,

    Urbányi, G
    Civil engineer and senior research engineer, and chemist-biologist and research associate, Research Centre for Water Resources Development, Budapest,


    Paper ID: STP32699S

    Committee/Subcommittee: D34.02

    DOI: 10.1520/STP32699S


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