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Publications

NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.

2007

Abstract

It is generally recommended that solutions for the treatment of wastewater and toilet waste is based on a detailed knowledge of the local physical and natural conditions as well as socio-economical factors and socio-cultural factors. Based on experience from previous comparable projects the following components are recommended: " The systems should be build as large as possible based on local natural/financial resources " Infiltration systems are preferred if local soil is usable and local water resources are protected " A combination with pre-treatment, compact filtering and extensive filtering in wetlands or peat filters Based on experience from previous comparable projects the following components might also be recommended given a local acceptance: " Urine separating toilets without water/low water consumption " Separate collection of urine in tanks to be stored and reused or safely disposed off " Toilet solid waste to be stored in separate tanks and co-treated with other organic waste fractions " Separate treatment of greywater and urine in extensive infiltration or filter systems These systems makes it possible to a safe, odour free and recycling waste and wastewater treatment without creating unacceptable loads on the environment or risks to human health. Infiltration systems depend on local soils and previous use of ground water.

To document

Abstract

Twelve fertilizer/biostimulant products or product families were compared with mineral fertilizer in three two-year trials on USGA greens and sand-based football fields in southern Norway. Within each trial, all treatments were received the same amount of total nitrogen per year. Substitution of some of the mineral fertilizer with Gro-Power® improved turfgrass quality in one trial. Otherwise, the organic fertilizers and biostimulants producted results that were equal to or inferior to the control treatment. In conclusion, fertilization of sand-based golf greens and football fields ought to be based on light and frequent applications of mineral fertilizer throughout the growing season. Organic fertilizers and biostimulants can, at best, be supplements to such a fertilizer program.

To document

Abstract

This paper presents the potential of composting oil wet drill cuttings as a drilling waste disposal option. The potential is substantiated by results from several laboratory and field experiments. Artificially oil wetted drill cuttings were prepared by adding commonly used base oils from Norwegian offshore operations to a representative clay. Degradation of the hydrocarbon components in the oily wet cuttings by vermicomposting was successfully accomplished. The composts were beneficially used as part of growing media for landscape plants; ryegrass, coniferous, and deciduous trees, and the fertilization effect was compared with commercial NPK fertilizers. The plant growth studies showed that the composts produced by treating artificial oily drill cuttings by vermicomposting had considerable fertilizing effect on ryegrass and trees.