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  • Mae'r tîm @PrifysgolBangor a @PrifysgolAbertawe yn bwriadu cynnal rhagor o waith gyda'r sector morol Cymru mewn project newydd SEACAMS2.

Can Swansea Docks sustain marine life?

SEACAMS contact: Christian Lønborg

Water Quality Assessment: Swansea Docks

The objective of this study was to determine the water quality within Swansea Docks. Field sampling took place in the period May-November 2011. Salinity and temperature profiles were recorded and water samples were collected at two depths at four different stations for the analyses of dissolved oxygen, dissolved nutrients, suspended organic carbon, nitrogen and chlorophyll a. These measurements give an indication of how much marine life the Docks could sustain.

The use of Xylit-fibre for coastal water purification

It is widely recognised that the reduction of nutrients (mainly nitrogen (N) and phosphorus (P)) is necessary to improve the ecological quality of coastal waters. One of the largest sources of nutrients to coastal waters is human wastewaters. Hence in order to reach a good ecological quality of coastal waters, we need a more efficient removal of nutrients from waste water. One suggested method for nutrient absorption is the use of Xylit-fibres. But this material is still untested, so in order for SALIX to sell this product for water purification they need to obtain data on the chemical and physical properties of Xylit-fibres and its efficiency as a nutrient absorber.

The collaborative R&D project contained a laboratory study where the chemical and physical properties of the Xylit-fibres were determined. In the laboratory the nutrient absorption of Xylit-fibre rolls was assessed and compared with two other materials (fresh wood fibres and coir fibre), using water in mesocosms tanks.