21 Greywater Recycling: Field Experience
W. Neubrand 1 , J. Heiser 2 , A. Schindler 3 , M. Treberspurg 4 , w. Hotbauer S ,
H. Czaya 6
IBWT AG, 5310 Mondsee, Austria E-mail: wolfgang.neubrand@aqua.co.at
Tel: +43- 6232-7722-1753 Fax: +43-6232-7722-17lO
2BWT AG, 53lO Mondsee, Austria. E-mail: juergen.heiserCWbwt.at
Tel: +43-6232-5011-1228 Fax: +43-6232-5011-1229.
3BWT AG, 1230 Vienna, Austria E-mail: alfred.schindlercmchcllo.at
Tel: +43-1-6989898. Fax: +43-1-6989898-11.
4Treberspurg & Partner Ziviltechniker Ges.m.b.H, Penzinger Str. 58, A-1140
Vienna, Austria E-mail: technisches.buero.hofbaucrCWnctway.at
Tel: +43-1-894-3191 Fax: +43-1-894-3191-15
SIngenieurbiiro Dipl.-Ing. Wilhelm Hofbauer, Penzinger Str. 58, 1140 Vienna,
Austria E-mail: technisches.buero.hofbaucr@nctway.at Tel: +43-1-894-31-91
Fax: +43 -1- 894-3191-15.
6Vienna Oko-Systems, Dr. Neumann Gasse 7, 1230 Vienna, Austria.
E-mail: Vienna.oekosystemscmchello.at . Tel: +43-1-865-5575
Fax: +43-1-865-5575.
Abstract
Currently, domestic sewerage systems are mainly based on collection of
wastewater and centralized end-of-pipe treatment. As with integrated water
treatment and recycling processes in industry on-site treatment schemes are
becoming more popular. Greywater is the low contaminated fraction of domestic
wastewater and thus offers the highest potential for water recycling. Major
concerns of authorities and consumers are microbiological contamination and
smell and odor of recycled water. The use of greywater for toilet flush has been
demonstrated in two installations in Austria. The water-recycling process is based
on a combination of membrane separation (nanofiltration) and disinfection (UV,
chlorination). Even the very strict requirements of local authorities could be met
after startup and optimization period. Long-term monitoring of the system is in
progress. Greywater recycling for toilet flush is an efficient tool for reduction of
overall water consumption in the domestic sector especially for medium- to largescale housing units. This will also help to preserve natural water resources.
H. Rubin / P. NachtnebellJ. Fuerst! U. Shamir
Preserving the Quality of Our Water Resources
© Springer-Verlag Berlin Heidelberg 2002
W. Neubrand 1 , J. Heiser 2 , A. Schindler 3 , M. Treberspurg 4 , w. Hotbauer S ,
H. Czaya 6
IBWT AG, 5310 Mondsee, Austria E-mail: wolfgang.neubrand@aqua.co.at
Tel: +43- 6232-7722-1753 Fax: +43-6232-7722-17lO
2BWT AG, 53lO Mondsee, Austria. E-mail: juergen.heiserCWbwt.at
Tel: +43-6232-5011-1228 Fax: +43-6232-5011-1229.
3BWT AG, 1230 Vienna, Austria E-mail: alfred.schindlercmchcllo.at
Tel: +43-1-6989898. Fax: +43-1-6989898-11.
4Treberspurg & Partner Ziviltechniker Ges.m.b.H, Penzinger Str. 58, A-1140
Vienna, Austria E-mail: technisches.buero.hofbaucrCWnctway.at
Tel: +43-1-894-3191 Fax: +43-1-894-3191-15
SIngenieurbiiro Dipl.-Ing. Wilhelm Hofbauer, Penzinger Str. 58, 1140 Vienna,
Austria E-mail: technisches.buero.hofbaucr@nctway.at Tel: +43-1-894-31-91
Fax: +43 -1- 894-3191-15.
6Vienna Oko-Systems, Dr. Neumann Gasse 7, 1230 Vienna, Austria.
E-mail: Vienna.oekosystemscmchello.at . Tel: +43-1-865-5575
Fax: +43-1-865-5575.
Abstract
Currently, domestic sewerage systems are mainly based on collection of
wastewater and centralized end-of-pipe treatment. As with integrated water
treatment and recycling processes in industry on-site treatment schemes are
becoming more popular. Greywater is the low contaminated fraction of domestic
wastewater and thus offers the highest potential for water recycling. Major
concerns of authorities and consumers are microbiological contamination and
smell and odor of recycled water. The use of greywater for toilet flush has been
demonstrated in two installations in Austria. The water-recycling process is based
on a combination of membrane separation (nanofiltration) and disinfection (UV,
chlorination). Even the very strict requirements of local authorities could be met
after startup and optimization period. Long-term monitoring of the system is in
progress. Greywater recycling for toilet flush is an efficient tool for reduction of
overall water consumption in the domestic sector especially for medium- to largescale housing units. This will also help to preserve natural water resources.
H. Rubin / P. NachtnebellJ. Fuerst! U. Shamir
Preserving the Quality of Our Water Resources
© Springer-Verlag Berlin Heidelberg 2002