Phosphorus Inputs to Surface Waters: Challenges in Meeting the Water Quality Criteria of the EU Water Framework Directive
Excess phosphorus (P) in surface waters is a major water quality concern because of its implication in aquatic eutrophication. Phosphorus inputs to surface waters arise from a variety of point and non-point sources. Point sourced-P inputs to waters have considerably decreased in recent years, at least partly driven by regulatory requirements, e.g. the EU Water Framework Directive. Treated wastewaters are a significant source of P inputs to receiving water-bodies. Research shows a considerable reduction in P arising from this source in recent years, and further reductions are expected in future, as interest in P recovery from wastewaters grows with time. Diffuse-P inputs from agricultural drainage are more difficult to control. This is largely the legacy of excess P use in farming systems; the surplus P has resulted in considerable increases in soil-P build up in intensive farming systems. Without addressing this underlying cause, it is difficult to see how P inputs from the agriculture sector can be mitigated. It is not difficult to reduce P inputs in arable farming systems but it can be challenging in livestock farming enterprises where often far too much of manure/slurry is generated than can be sensibly utilised for crop production.
HOODA Peter S. MILLIER Helen K.G.R
Kingston University London, School of Geography, Geology and the Environment, Kingston upon Thames KT1 2EE, UK Westminster Water Science, School of Life Sciences, University of Westminster, London W1W 6UW, UK
国际会议
2011 International Symposium on Environmental Science and Technology(2011 环境科学与技术国际会议 2011 ISEST)
广东东莞
英文
515-524
2011-06-01（万方平台首次上网日期，不代表论文的发表时间）