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Anwer, Morshed, 2008. Irrigation water disinfestations. SLU, Horticulture, Alnarp. Alnarp: SLU, Horticulture



Irrigation with untreated or low quality water often disperses many infectious diseases. In Sweden, 90 to 99.9% reduction of microorganisms in the water can be achieved by waste water treatment but potential risk of high number of sewage, substantial loads of pathogens could still remain. The main objective of this work was to observe the irrigation water quality at Norrvidinge gård located in Kävlinge community, Scania. Advanced oxidation technology (AOT, Wallenius Water AB, Stockholm, Sweden) was employed in the irrigation pipeline and three disinfestation treatments named as 'stationary- AOT', 'mobile- AOT' and 'combined- AOT' was used for water disinfestations. Water samples were taken for investigation at ten occasions during the season 2007. Presence of elevated numbers of heterotrophic organisms was common phenomenon in the water samples. The hygienic quality of the investigated water was good. Coliform bacteria and Escherichia coli loads were found very low in the samples comparing to the World Health Organization (WHO) standard for irrigation water or German standard for irrigation water (DIN 1965). Advanced oxidation Technology (AOT) was found effective for the reduction of microbial loads and placement of the AOT-device within the pipeline system was essential. Investigated organic compounds (total organic carbon, TOC; chemical oxygen demand, COD; total nitrogen, TN and total phosphate, TP) and inorganic compounds (ammonium-nitrogen, NH4-N; nitrate-nitrogen, NO3-N; phosphorus, P; and sulphur, S) did not seem to be affected by the disinfestation treatments. The amount of the organic compounds in the sample water was much lower compared to the standard value. Measurements of the electrical conductivity and pH confirm the non-saline character of the irrigated water.

Main title:Irrigation water disinfestations
Authors:Anwer, Morshed
Supervisor:Alsanius, Beatrix
Series:Master project in the Horticultural Science Programme
Volume/Sequential designation:2008:6
Year of Publication:2008
Level and depth descriptor:Other
Student's programme affiliation:LY003 Horticultural Science Programme 300 HEC
Supervising department:(NL, NJ) > Horticulture
Keywords:advanced oxidation technology (AOT), heterotrophic, coliform, Escherichia coli, disinfestations, total organic carbon (TOC), chemical oxygen demand (COD), total nitrogen (N) total phosphate (TP)
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Subject. Use of subject categories until 2023-04-30.:Irrigation
Faculties > Faculty of Landscape Planning, Horticulture and Agricultural Science (until 2013)
Deposited On:24 Oct 2017 07:33
Metadata Last Modified:25 Oct 2017 04:00

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