Delhi 12 November 2010-Östen Ekengren

Water and agriculture

Irrigated Agriculture "Water saving options in irrigation , looking for efficient techniques, irrigation management and adopted cropping practices"

WSSTP-publication sept 2010.

www.wsstp.eu

Delhi 12 November 2010-Östen Ekengren

Priority

Irrigation; technology and irrigation management, improved cropping practices

Water reuse;linking technologies and legal framework,(full water pricing) determination of required water quality for different agriculturalpurposes, fostering the reuse of urban effluents in water scarce regions.

Delhi 12 November 2010-Östen Ekengren

Priority

Nutrients and pesticide management; measures to reduce inputs and to address leakage and run-offthrough hydromorphology or agricultural practices, while tapping the potential of nutrients resource from urban water schemes such as biosolids

Delhi 12 November 2010-Östen Ekengren

Ditch dams and ditch filters – can theyreduce the eutrophication problem?

Sam Ekstrand

Foto: Sam Ekstrand

Stockholm 2 September 2010- Ditch filters

Ditch dams and ditch filters

Stockholm 2 September 2010- Ditch filters

Lime cassette

Delhi 12 November 2010-Östen Ekengren

Filter wells:

Installation and function

Delhi 12 November 2010-Östen Ekengren

The potential of ditch dams and lime cassettes

Potentially 80-100% reduction of dissolved Phosphorus (mainlyPhosphates), which is the main part of the bio-available fraction.

10-30 % reduction of particulate Phosphorus

The sediment of the dam can be removed and re-used

The used filter material can potentially be spread on the fields.

Requires no additional land area.

Applicable for a large part of the arable land in the Baltic Sea States.

Simple and cheap mitigative action

Delhi 12 November 2010-Östen Ekengren

Delhi 12 November 2010-Östen Ekengren

Thank you for your attention!