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Plant-availability ...
Plant-availability of phosphorus removed from wastewater by different processes
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- Kvarnström, Elisabeth (författare)
- Luleå tekniska universitet
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(creator_code:org_t)
- Luleå : Luleå tekniska universitet, 2001
- Engelska 76 s.
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Serie: Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, 1402-1544 ; 2001:18
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- The objective of this thesis was to investigate the plant-availability of P removed from wastewater by different processes, with focus on agronomic aspects. Short-term P availability was assessed by greenhouse studies, utilizing four different filter substrates and a sludge-recovered iron phosphate. It was shown that the plant-P availability of these products was not significantly different from that obtained with a water-soluble P fertilizer. It was also found that dewatering method exerted on one FeCl3- precipitated sludge did not influence the plant-P availability. The long-term effects of sludge amendment to agricultural soil was assessed by P ion concentration in solution and P transfer from soil solid phase to solution for soil samples collected from a 19-year old field experiment. The relative plant-P availability (RPA) was found to be 60% for the sludge treatments, a value that was not significantly different from 100%.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
Nyckelord
- VA-teknik
- Urban Water Engineering
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