when we started - ocw.un-ihe.org file0 0 0 20% urin 0 m3 l 190 150 340 20% urin 9 m3 l 4 4 8 90%...

Cycles in the ecological development of Valley View ” University, Accra, Ghana. Gunther Geller & Seth Laryea. 33rd WEDC Conference, Accra, Ghana

Cycles in the ecological development of ValleyVi ewUniversity(VVU), Accra, Ghana

Valley View University , University of Hohenheim , Bauhaus-University Weimar, Palutec , Berger -Biotechn ik,

Ecological Engineering Society (IÖV): BMBF-Project


When we started :• No water-line, no well• No rainwater collection and usage

• Campus in the starting phase• Biggest private university• Reliable partners• Quick decisions• Sense for ecology


2001: water del ivered byVVU-truck


Aim• Ecological cycles within a holistic and

sustainable concept of- Town planning- Mass flow management- Quality management


• Holistic Concept- Architecture, townplanning- Flow of matter, energy, information

• Sustainable function of VVU- Deep understanding heart & soul:

Commitment- Qualification: Training, courses, study- Acceptance, public relation- Adapted structure of VVU


New Ecological Masterpla n:Structure in space / Town planning

Bauhaus-Universität Weimar


Nahrungsmittel RW m3kg

m3

RW 975 m3 / 975 m3 RW 0 m3 / 1032 m3 Urin 79 m3Regenwasser Nahrungsmittel

gesammelt TW 472 m3 TW 2.224 m3 SW 0 m3 Fläche m2 kgm3 Küche GW 374 m3 L

27 % GW 2.606 m3RW 519 m3 RW 0 m3

m3 M F Pers. Nutzung WC M F Pers. Nutzung WC Nährstoffe450 350 800 20% Urin 70 m3 L 50 34 84 80% Urin 0 m3 U Nährstoffbedarf

N 272 kg N -303 kgBedarf TW-Bedarf 440 m3 SW 426 m3 B TW-Bedarf 89 m3 SW 1.502 m3 U N 575 kg

Nahrungsmittel NW-Bedarf 487 m3 NW-Bedarf 2.135 m3 P 40 kg P 115 kg P -75 kg Nahrungsmittelkg RW-Speicher 100 m3 GW 55 m3 U Speicher 0 m3 GW 743 m3 U K 345 kg kg

Nutzung 9,2 Monate/Jahr Nutzung 11,8 Monate/Jahr K 207 kg K -138 kgW-spar- und Sep-toiletten, wl. Urinale Standardtoiletten

Nährstoffe Nährstoffe

N 193 kg N 151 kg

P 29 kg P 24 kg SW 1.210 m3 SW 1.210 m3

K 101 kg K 101 kgNährstoffe

Nkg

RW 0 m3 / 474 m3 RW 65 m3 / 521 m3 RW 0 m3 / 174 m3

Trinkwasser TW 0 m3 TW 180 m3 TW 80 m3berechnet P

m3 kgdiffuse Abnehmer RW 0 m3 RW 0 m3 RW 0 m3

m3 M F Pers. Nutzung WC M F Pers. Nutzung WC M F Pers. Nutzung WC0 0 0 20% Urin 0 m3 L 190 150 340 20% Urin 9 m3 L 4 4 8 90% Urin 0 m3 U

gesamt Km3 TW-Bedarf 0 m3 SW 0 m3 U TW-Bedarf 0 m3 SW 256 m3 B TW-Bedarf 55 m3 SW 82 m3 V kg

NW-Bedarf 0 m3 NW-Bedarf 245 m3 NW-Bedarf 25 m3RW-Speicher 0 m3 GW 0 m3 V Speicher 45 m3 GW 0 m3 U RW-Speicher 0 m3 GW 0 m3 U

Oyibi max. Nutzung 9,1 Monate/Jahr Nutzung 9,9 Monate/Jahr Nutzung 8,4 Monate/Jahrm3 W-spar- und Sep-toiletten, wl. Urinale W-spar- und Sep-toiletten, wl. Urinale Wasserspartoiletten

Nährstoffe Nährstoffe Nährstoffe

N 0 kg N 57 kg N 11 kg

P 0 kg P 7 kg P 2 kg

K 0 kg K 22 kg K 7 kg

RW 0 m3 / 521 m3 RW 0 m3 / 1032 m3 RW 417 m3 / 417 m3

TW 2.175 m3 TW 2.000 m3 TW 4.818 m3 Studentinnen gesamt 433Bewohnerinnen 252keine Bewohnerinnen 181

RW 0 m3 RW 0 m3 RW 0 m3M F Pers. Nutzung WC M F Pers. Nutzung WC M F Pers. Nutzung WC Studenten gesamt 795

151 0 151 60% Urin 0 m3 U 125 0 125 60% Urin 0 m3 U 0 252 252 60% Urin 0 m3 U Bewohner 276keine Bewohner 519

TW-Bedarf 0 m3 SW 588 m3 B TW-Bedarf 0 m3 SW 695 m3 B TW-Bedarf 0 m3 SW 2.330 m3 UNW-Bedarf 2.175 m3 NW-Bedarf 2.000 m3 NW-Bedarf 5.235 m3 Summe Studenten 1.228RW-Speicher 0 m3 GW 1.612 m3 U RW-Speicher 0 m3 GW 1.334 m3 U RW-Speicher 100 m3 GW 2.231 m3 LNutzung 9,1 Monate/Jahr Nutzung 9,1 Monate/Jahr Nutzung 9,1 Monate/Jahr Wohnhäuser 92reduzierte Standardtoiletten reduzierte Standardtoiletten Standardtoiletten Beschäftigte 80

Nährstoffe Nährstoffe Nährstoffegesamt Bewohner 620

N 146 kg N 145 kg N 292 kg gesamt keine Bewohner 780

P 24 kg P 23 kg P 46 kg gesamt 1.400

K 109 kg K 99 kg K 200 kg

Nutzung:Regenwasser Regenwasser Nährstoffe Landwirtschaft (L)Dachflächen Gesamtareal N P K Biogasanlage (B)

m3 m3 486 kg 76 kg 326 kg Vorort-Nutzung (V)32 % % Ungenutzt (U)

52.358

61.240

51.300

9.053

21.000

11.947

Staff Houses

130.000

ABFLUSS

nutzbar

-8.882 0

Landwirtschaft

Stoffstrombilanz VVU Accra 1.400 Personen

5.147

Dezember 2006

778.423

Guesthouses

0

Biogas plant

0

0

ungenutzt

ABFLUSS449

Men´s Dormitory

Personen 2006

Men´s Dormitory (Nortey) Women´s Dormitory

679.23687,3

Administration BuildingFaculty Building (A. Clark)

ZUFLUSS98.248

1.388

Cafeteria + Sanitary Blockmax. möglich

RegenwasserGesamtareal


m3

m3

Final Stage5.000 Persons

70%

Rainwater from roofs

Greywater

18.438 m3

m3

35.800

4.722

13%

46%

42%

12.315 m3

VVU

buildings

INPUT USAGE

21.384 m3

to roofs:

collected part:

Rainto agric area

98.248 m3

5.605 m3

691 m3

kg188.126

food

Urine

Blackwater

18.339 kg

Need for drinking water

Need for usage water

9.069 m3

Blackwater

7.671 m3m3

Greywater

7.883667.860 m3

Drinking water

RW roof area

EFFLUENT Not used

food

other users

28.124 m3

8.358

Rain water

778.423 m3

RW whole campus

whole campus

36.482 m3

Rainwater

26.964 m3Scenario with

Watersaving toiletsSeparating toiletswaterless urinalals

watersaving-fittingsgreywater collection

RegenwassernutzungBiogas plants

Mass-balance of flows for 5.000 people


Conclusi on for water (5.000 People ):• Drinking water: high demand for supply• Demand can´t be fulfilled• Usage water: some areas need concern• Greywater: delivery to agric possible• Rainwater: storing!• Usage water: saving• Concerning cycles + townplanning


RW 417 m3 / 417 m3

TW 6.928 m3

RW 0 m3M F Pers. Nutzung WC0 252 252 90% Urin 0 m3 U

TW-Bedarf 907 m3 SW 3.972 m3 UNW-Bedarf 6.439 m3RW-Speicher 100 m3 GW 3.014 m3 VNutzung 9,5 Monate/JahrStandardtoiletten

Nährstoffe

N 998 kg

P 135 kg

K 447 kg

Women´s Dormitory


RW 474 m3 / 474 m3

TW 87 m3

RW 309 m3M F Pers. Nutzung WC

125 200 325 25% Urin 30 m3 L

TW-Bedarf 85 m3 SW 160 m3 UNW-Bedarf 167 m3RW-Speicher 40 m3 GW 85 m3 VNutzung 9,5 Monate/JahrW-spar- und Sep-toiletten, wl. Urinale

Nährstoffe

N 220 kg

P 30 kg

K 74 kg

Faculty Building (A. Clark)



New Sanitary Block• Design• Maintenance• Acceptance

New Eco -Buildings


Urine-collection+transport

• Urine-tanks• Water-meters• Urine-transporter

Transport & Re- use


Greywater and Urine

• Paw-Paw-Plantation• Bananas• Avocados

Re-use


Faculty building An drew Clark

• Rainwater-Collection• Urin-Collection• Water-saving toilets & urinals

New Eco -Buildings


First training and introduction October 2003: Old and new toilets

Training & Information


QM: Acceptance of sanitar y products

- High with farmers in VVU´s surrounding (MA-interviews)- transportation + application by workers of VVU: no problems(University of Hohenheim)


Warmwater bySolarplant Dec2005:

QM: Student- exchange Ghana - D


Opening Circle

QM: VVU-Retreat February 2007: Heart & Spirit


Ecocafe-Groups



Appreciative Inquiry Step 4: Measures towards the Eco-Uni VVU



All Participants assembled



www .ioev .de: Projects

Valle yView : the first ec o-unive rsity o f Africa

when we started - ocw.un-ihe.org file0 0 0 20% urin 0 m3 l 190 150 340 20% urin 9 m3 l 4 4 8 90%...

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