INVESTIGATION OF THE POTENTIAL EXPLOITATION OF THE AQUIFER UNDERLYING THE AREA OF THE ARISTOTLE UNIVERSITY OF THESSALONIKI

Transcription

1 INVESTIGATION OF THE POTENTIAL EXPLOITATION OF THE AQUIFER UNDERLYING THE AREA OF THE ARISTOTLE UNIVERSITY OF THESSALONIKI Lazaridou Ou. Nanou P. Styliadou St. Theodossiou N.

2 Contents Study area Positions and number of pumping stations Problems caused by overflow and existing measures Quality analyses Conclusions Proposals 2

3 Study Area Aristotle University of Thessaloniki 3

4 Study Area Sketch of 1914 showing the streams at the eastern part of the city Picture of 1900 showing the Saranta Ekklisies stream which is the main source of the ground water aquifer

5 Positions and number of pumping stations Faculty of Engineering (4 pumping stations) School of Dentistry (1 pumping station) AHEPA Hospital (3 pumping stations) Faculty of Sciences (5 pumping stations) Faculty of Philosophy (2 pumping stations) School of Veterinary Medicine (2 pumping stations) Central Library of AUTh (4 pumping stations) 5

6 Positions of pumping stations Faculty of Engineering 6

7 Characteristic pictures of pumping stations Faculty of engineering 7

8 Position and characteristic picture of pumping station School of Dentistry 8

9 Positions of pumping stations AHEPA Hospital 9

10 Characteristic pictures of pumping stations AHEPA Hospital 10

11 Positions of pumping stations Faculty of Sciences 11

12 Characteristic pictures of pumping stations Faculty of Sciences 12

13 Positions of pumping stations Faculty of Philosophy 13

14 Characteristic pictures of pumping stations Faculty of Philosophy 14

15 Positions of pumping stations School of Veterinary Medicine 15

16 Characteristic pictures of pumping stations School of Veterinary Medicine 16

17 Positions of pumping stations Central Library of AUTh 17

18 Characteristic pictures of pumping stations Central Library of AUTh 18

19 Campus lake

20 Characteristic pictures of problems in basements due to high ground water level School of Dentistry Department of Architecture Faculty of Sciences 20

21 Measures taken to minimize damage caused by overflow Central Library Faculty of Sciences Faculty of Engineering 21

22 Water Level 4 series of measurements (2 in winter and 2 in summer season) Pumping stations: Aluminium leveling 5m staff Calculation of the water level according to: o data from a given site map o the distance between the manhole rim and the water surface Piezometers: Data provided by ATTIKO METRO A.E. 22

23 Positions of piezometers placed by the construction company ATTIKO METRO A.E. SINTRIVANI Borehole PANEPISTIMIO Borehole ATTIKO METRO S.A. 23

24 Lab Tests Turbidity (0,8-13,76 NTU/FNU) ph (7,25-7,92) Alkalinity Conductivity (111,4-458,5 mg/l) (0,666-1,035 ds/m) Salinity (0,1-0,3 ) Chlorine (55-71 mg/l Cl - ) Hardness (8,09 9,3 mg/l CaCo 3 ) TDS ( mg/l TDS) 24

25 Lab Tests Nitrate (<0,5 25,77 mg/l NO 3- ) Ammonium (0,01 2,03 mg/l NH 4+ -N) Phosphate (<0,01 1,16 mg/l PO 4 ) 25

26 Lab Tests Toxicity (5 15 %) Heavy metals (Fe <0,10 mg/l, Cu <0,05 mg/l, Cr<0,005 mg/l) Microbiological analysis 26

27 Conclusions Observations (1) The water level is lower than expected due to the operation of the pumps in the: basements of the university buildings and two boreholes constructed by ATTIKO METRO A.E. Satisfactory quantity of water throughout the year Seasonal variation: Pumping stations: around 0.07m Piezometers: m affected by the construction process 27

28 Conclusions Observations (2) Pumping stations overflow results in multiple moisture problems at the university s facilities Quality meets the requirements set by the legal framework concerning the use of water in terms of irrigation Exclude the use of the water from the AHEPA Hospital pumping station 28

29 Proposals for the use of water Irrigation of the University divided in two sub-areas 29

30 Planted grounds in the Western sub-area Planted grounds area: 70 acres Water sources: Faculty of Philosophy School of Veterinary Medicine Faculty of Sciences Central Library Water collection at the existing lake Capacity increase required METRO Sintrivani Station borehole Faculty of Philosophy pumping station 30

31 Planted grounds in the Eastern sub-area Planted grounds area: 11,14 acres Water sources: School of Dentistry Faculty of Engineering Reservoir Construction of a water reservoir at the northeastern corner of the campus or Collection of the water at the well/pumping station Π2 METRO Panepistimio Station borehole well/pumping station Π2 31

32 Proposals for the use of water Creation of esplanade Proposal of Thessaloniki Re-Urban project m wide Crossing the campus Low cost Aesthetical improvement -urban.pdf 32

33 Thank you for your attention! 33