Managed Aquifer Recharge: Welcome

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ISMAR9 Mexico City June 2016. Welcome to the website of the International Association of Hydrogeologists Commission on Managing Aquifer Recharge ...
12/11/2013

Objectives Practical criteria in the design and maintenance of MAR wells and boreholes in order to minimize clogging impacts, obtained from three different operative sites in Spain

FERNÁNDEZ ESCALANTE, Enrique Tragsa I+D+i

1. Study on the biggest impact that affects MAR facilities: clogging 2. Clogging characterization for three MAR areas in Spain (down-hole techniques, sampling and analysis) 3. Improvements to be applied to wells and bores designs and water pre-treatment criteria 4. Proposal for practical interventions at hoc (cleaning and maintenance operations ) in order to reduce the clogging genesis and to increase the effectiveness of the facilities

Spanish vowel IAH MAR-WG

MAR-NET member Moncloa Campus teacher

Materials and methods

Clogging sampler

• Down-hole bores inspection equipment (ROTV)

• Tragsatec´s specific pipe scraping clogging sampler • Collect clogging and water samples at any specific depth • Patented: http://www.oepm.es/pdf/ES/0000/000/02/15 /68/ES-2156821_B1.pdf (ES 2 156 821 B1).

• Clogging sampler

• Laboratory for chemical analysis

Clogging overview video

Guadiana Basin MAR facilities 2-Daimiel National Park (8 wells)

1-Guadiana Channel (25 wells)

1

12/11/2013

1- Guadiana Channel

Example for a generic Guadiana Channel MAR well

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• Tertiary mudstone aquifer • 25 well-bores about 60-100 m depth along a channel starting at Peñarroya dam • Irrigation use

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Total Dissolved Solids (Parts Per Million)

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Chloride (Cl)

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Piper-Hill-Langelier hydrograms for CHG control network & MAR water. CANAL WELL 13 O2 12.4

Na 21.98 SiO2 5.26

K Ca 1.98 108.06 EC(mS/cm) pH 0.746 8.11

Mg 18.24 NO 2 0.34

Cl 34.19 B 0.1

HCO 3 2 43.07 + NH 4