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Icke kemiska metoder för sanering och rengöring

en litteraturstudie

Andersson, Britt-Marie (1993). Icke kemiska metoder för sanering och rengöring. Technical Report. Uppsala: (NL, NJ) > Dept. of Energy and Technology, Sveriges lantbruksuniversitet. Rapport - Sveriges lantbruksuniversitet, Institutionen för lantbruksteknik ; 170

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A growing consciousness of health hazards in using and handling chemical substances for commercial horticulture has created a need for non-chemical methods as a means of control and disinfestation. This report is a review of the use and experience of different non-chemical methods. Some new methods which are being developed are microwaves, gamma radiation and ionization. Old methods like the use of steam for disinfection have been improved. They are more energy-efficient and less time-consuming. The possibility of using microwave energy to disinfest growing substrate, both soil and artificial material, is being researched. It is a low-energy and less time-consuming method when it comes to sterilizing soil. Satisfactory results have been documented. The technology has yet to be developed to fit the needs of commercial horticulture. When artificial substrate, rockwool, was treated in a microwave oven it resulted in an unequal distribution of heat in the rockwool and there was a limited temperature range in moistened rockwool. Rockwoll treated with RF-waves was however sufficiently disinfected. The use of steam for sterilizing soil is a well-known method. A new system with negative pressure is beeing developed. This system is more efficient than drain-steaming and steam applied under a plastic cover. Recycled rockwool is satisfactorily sterilized in containers heated by steam in many countries including Holland. The advantage of preventing problems by maintaining highly hygienic standards must not be underestimated. Different methods of cleaning the equipment are available, e.g. steam chambers for cleaning equipment, pot trays, recycled pots etc as well as hot water baths for disinfection of pot trays. Continuous cleaning of greenhouse buildings, coverings and fixtures with high-pressure and hot water is another way to forestall problems. Even the tables should be cleaned with high-pressure when possible. Recirculated drain water and nutrients are a main source of infection. There are different methods to sterilizing the solution, e.g. UV-light, ultra filtration, heating or biological filters.

Authors/Creators:Andersson, Britt-Marie
Title:Icke kemiska metoder för sanering och rengöring
Subtitle:en litteraturstudie
Series Name/Journal:Rapport - Sveriges lantbruksuniversitet, Institutionen för lantbruksteknik
Year of publishing :1993
Number of Pages:55
Place of Publication:Uppsala
Publisher:Institutionen för lantbruksteknik, Sveriges lantbruksuniversitet
Publication Type:Report
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production
Keywords:soil disinfestation, soil sterilisation, microwave radiation, steam, steam chambers, hot water, high-pressure cleaning, non-chemical methods, recirculated drainwater
Permanent URL:
ID Code:3876
Department:(NL, NJ) > Dept. of Energy and Technology
Deposited By: Erica Lövgren
Deposited On:10 Jul 2009 00:00
Metadata Last Modified:02 Dec 2014 10:25

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