1

Reuse of Treated Wastewater
Stefania Paris1, Franz Bischof 2, Hans G. Huber1
1

Hans Huber AG, Maschinen- und Anlagenbau, Industriepark Erasbach A1, D-92334 Berching (Email: info@huber.de)2

University of Applied Sciences, Department of Environmental Engineering, Kaiser-Wilhelm-Ring 23,
D-92224 Amberg, Germany (E-mail: f.bischof@h-amberg-weiden.de)1

Introduction

Even in the 21st century approximately 1.1 billion people on our planet still have no access to clean
drinking water and more than 2.6 billion people have to live without sanitary facilities (WHO/UNICEF,
2005). Estimations indicate that less than 10 % of the wastewater being produced on earth has beentreated prior to being discharged. Approximately 12,000 km³ wastewater are distributed in ourenvironment, which is comparably more than half the volume of the Baltic Sea (approx. 22,000 km³,
BMU).
Polluted drinking water and insufficient wastewater disposal are the causes for the majority of all
diseases occurring in emerging and developing countries. Up to 50 % of the worldwide stationary
treated diseases are gastro-intestinal infections, such as cholera, dysentery and typhus. According to
WHO and UNICEF (2005) up to 4,500 children per day die from diseases that are passed on throughpolluted water.
The inextricable link and mutual dependences between economic growth and prosperity, water supply
and wastewater disposal, poverty, epidemics and criminality induced the United Nations in theirplenary meeting in 2000 to define and resolve their Millennium Development Goals (MDGs), thederived aim of which is among others, by 2015, to halve the number of human beings without accessto clean drinking water and those without access to sanitary facilities. How ambitious this plan isshows a calculation according to which wastewater treatment plants for 900,000 people would have to
be built every working day (Cornel, 2004).
But the conventional sanitary concept and technologies developed and optimised in the richindustrialised countries in the course of decades are no sustainable solution to the problems in areas
with water shortage. The main reasons against the extensive application of conventional wastewater
treatment systems are their significant investment and operating costs, the high water consumption
for transport of faeces, urine and other wastes, and the elimination of valuable nutrients. Furthermore,
effluents from conventional wastewater treatment plants are discharged into water courses andtherefore not available for reuse.
The unstoppable population growth in many parts of the world, the necessity to use nutrients for
agricultural production of food and the intention to at least approximately achieve the MDGs make itimperative to pursue different and partly completely new strategies of wastewater disposal. According
to WHO (2006) ”the use of wastewater in agriculture can help communities to grow more food andmake use of precious water and nutrient resources. However it should be done safely to maximize
public health gains and environmental benefits”. In this connection, wastewater is recognised as“value water”. The epoch of mere wastewater disposal is drawing to its end and will be superseded by
the era of wastewater recycling with creation of value.
Also HUBER operates with this in mind and develops partly completely new approaches, which aretested with the respective countries and adapted to their specific local conditions. By using alternative
sanitary concepts and practising the reuse of water and valuable material contained within
wastewater also in their own office building HUBER is contributing to a substantial paradigm shift in
wastewater treatment.

- 249 -

2
2

New approaches

Approaches to alternative solutions reach from reuse of rainwater, irrigation with treated wastewater
up to the recovery of nutrients and their reuse for agricultural purposes. Especially the separate
treatment of the individual flows of domestic wastewater proves to be reasonable. Like it is common
practice in industries already, the critical wastewater flows are collected separately directly at source
and treated on site to provide for their reuse.
For example, the retention of urine from the main wastewater flow and its treatment (recovery of highconcentration nutrients and/or destruction of problematic substances) allow the design of small andeasy to operate treatment plants without the necessity for cost and energy intensive nitrification anddenitrification. In addition, the separate collection of urine reduces the micro pollution load on theaquatic environment.
The separation of the quantitatively biggest part of the wastewater, the greywater (effluent from hand
washbasins, dishwashers, washing machines, showers, bathtubs), and its treatment directly at sourceor close at source in semi-centralised units, which produces high quality service water, provides for a
multitude of water reuse options. The consideration and technical possibilities of decentralised energy
recovery from relatively warm shower and bathtub water are still in the initial stage. The advantage isthat the availability of the regenerative energy source is independent of the time of day, season or
region.
Even treatment of brown water alone (faeces and flush water) or faeces combined with bio-waste inhigh-performance anaerobic reactors seems to be reasonable in many countries since biogas is
produced in the treatment process. If the fermentation process takes place under thermophilic
conditions, this reduces the number of pathogenic germs and provides thus for direct reuse of thesource materials for agricultural applications.

3

Research in HUBER

The concepts and approaches described under chapter 2 are the focus of several research projects,
which the company is running at home and abroad in close cooperation with universities or on its
own. Special priority is given to the country-specific ecological and socio-economic requirements of
the local population when adapting the design of new developments and then realising them in theform of demonstration or pilot units. The goal is to increase the acceptance of new system solutions,and thus ultimately the export chances for the company's technologies, by means of knowhow
transfer and participatory processes in which representatives from the economic, scientific andpolitical sectors are involved.
In the following the projects with research character are presented which are under way at this stage.
They are partly supported financially by the State Ministry for Education and Research (BMBF) andpartly self-financed:-

Economical wastewater treatment (fine screening) for reuse of the water in agricultural
applications (co-financed by the BMBF). The goal of the project is mechanical water
treatment that produces irrigation water and at the same time recovers the nutrients nitrogenand phosphorus. The realisation of the project takes place in Algeria in close cooperation with
the GTZ and the University of Witten-Herdecke, Prof. Dr. Rudolph (see also chapter 3.1.).

-

Integrated wastewater and waste disposal systems for megacities with anaerobic
treatment for the provision of nutrient-rich water (co-financed by the BMBF). This projectis realised in Lima under the lead management of Prof. Jumar of the IFAK Institute (see also
chapter 3.2).

-

Decentralised underground treatment of heavily polluted precipitation runoffs fromspaces which are for traffic in urban agglomerations (self-financed). This filter system isinstalled at a highly frequented road in Munich and tested by the TU of Munich, Prof. Dr.
Horn.

-

Treatment of greywater with a reduced pollution load in order to produce service waterwith the aim of water reuse for irrigation and as toilet flush water (co-financed by the- 250 -

3
BMBF). This project aims at the Chinese market and is executed by the TU of Darmstadt,
Prof. Dr. Cornel.

3.1-

Production of nutrients and energy from separated individual wastewater flows bymeans of specific treatment of urine, biogas production from faeces and bio-waste,
and production of toilet flush water from greywater (co-financed by the BMBF). The
technical realisation takes place in Vietnam in cooperation with the University of Bonn, Dr.
Clemens.

-

Closing water and nutrient cycles on a regional scale through treatment of wastewaterand separated wastewater flows at source – HUBER ReUse concept with Recovery
Plant and ReUse Park (self-financed). The ReUse Park operated at the company’s
headquarters in Bavaria demonstrates water reuse options. The project proves thatwastewater that has been treated with HUBER technologies (Recovery Plant) can without
problems be used as agricultural irrigation water or even for pond management (see also
chapter 3.3.)

Economical wastewater treatment by means of fine screening
Example: Algeria

Algeria is presently undergoing a far-reaching political and economic transformation process, which
is characterised by a high migration into cities and rapid urbanisation. Especially in the northern partof the country the population pressure on the cities can be observed. Reduction of unemployment
and management of the water supply shortage and wastewater disposal problems are the greatchallenges the local municipality is faced with.
The management of the cities’ water resources is frequently inappropriate. Irrigation of parks withpotable water for example is common practise in the richer districts of Algiers. Vegetable gardens inslums, on the contrary, are irrigated with raw wastewater under totally uncontrolled conditions, which
both increases the environmental burden and leads to health problems.
By irrigating grasslands with partly treated raw wastewater from the sewer system the healthconditions in slums can be improved and the drinking water consumption reduced. Testing a simple
treatment system with mechanical solids separation, sedimentation and UV irradiation is the focus of
the BMBF research project “Decentralised reuse of raw wastewater for grassland development inarid areas” at Algiers. In cooperation with GZT and Prof. Dr. Rudolph (University of Witten/Herdecke,
Germany) HUBER takes part in the project by adapting the newly developed screening machine
HUBER PS Pipestrainer (Fig. 1).

Figure 1: Economical wastewater treatment by means of fine screening for Algier
The aim of the project is to realise a compact, easy to operate and affordable treatment plant for theextensive removal of undissolved pollutants from the raw wastewater and partly inactivation ofgerms, which allows to minimise the hygienic risks when handling treatment equipment. The partly- 251 -

4
treated, nutrient-rich wastewater is planned to be used in a demonstration project for irrigation of test
areas on the premises of the ENSH University in Algier (HUBER Report 2/2006).

3.2

Integrated wastewater and waste disposal systems for megacities withanaerobic treatment
Example: Lima

According to the United Nations’ prognosis, in 2030 approximately five billion people will live inmetropolitan areas. The rapid urbanisation process with its dramatic consequences concerns
especially large cities in emerging and developing countries. One example for this development is
Lima, the fast growing capital of Peru. On the outskirts of the eight million metropolis increasingly
uncontrolled settlement (Fig. 2) takes place with people living under critical conditions, such as lack ofwater and current, education and medical care.

Figure 2: Slum in Lima
The megacity’s growing hygienic, social and ecological problems are frequently too much of achallenge for the local governments. A remedy to the critical situation can in most cases only be
decentralised and specific measures. It is the goal to elaborate adapted strategies also in the field ofwater management, which aim at sustainable onsite recycling management through reuse of waterand nutrients.
Alternative systems for anaerobic treatment of suspended solids from wastewater and organic kitchen
wastes are presently tested within the scope of the BMBF research project “Lima – Megacity ofTomorrow” under the lead management of the Institute for Automation and Communication (IFAK).
Within this project HUBER plans to install in Lima, in cooperation with the Peruvian partners, a twostage biogas reactor which is to be operated under thermophilic conditions.
This anaerobic reactor is planned to be applied within the scope of an overall concept that is adapted
to the city’s specific situation for the integrated treatment of bio-waste and solids contained within
wastewater. The aim of the concept is the recovery of energy-rich biogas and safe fermentation
residues, which as a soil improver can be applied onto agricultural land. The experiences gathered in
the project will serve as the basis for the transfer of adapted technologies to other megacities withsimilar environmental problems (HUBER Report 2005/2006).

3.3

Closing regional water and nutrient cycles near to source
Example: Berching

The HUBER demonstration project, which has been run since January 2006 under the name of“HUBER Reuse Concept”, is considered to be an example of best management practice in the field of
wastewater treatment. Innovative sanitary systems with/without separation are applied at thecompany’s headquarters and different options of reuse of treated wastewater and the nutrientscontained are demonstrated. The goal is to get most of the value out of wastewater by applying- 252 -

5
specifically developed technologies, operated as Recovery Plants, i.e. to recover as many as possibleof the valuable materials – mainly water and nutrients – contained within the separated andunseparated wastewaters produced by the 200 employees and reuse the recovered materials in thecompany’s ReUse Park.
In the HUBER office building yellow water (undiluted urine) and brown water (faeces and toilet flush
water) are collected separately by means of waterless urinals and NoMix toilets, transported inseparate lines and stored separately. Also the greywater (dishwater and washing-up water) flows in a
separate line to the collection tank. Approximately half of the separated wastewater flows is mixed inorder to simulate conventional domestic wastewater. New HUBER technologies are available for the
specific treatment of the separated or partly combined wastewaters, which are operated with the aim
to provide hygienic service water and nutrients for agricultural applications (Fig. 3).

Recovery Plant and ReUse Park

Figure 3: Recovery Plant and ReUse Park at HUBER-

Membrane Bioreactor: The HUBER Membrane Bioreactor system provides for the specifictreatment of the total wastewater, greywater (and black water if required), and produces atthe same time a virtually germ-free effluent, which is reused as irrigation water or feeding of afish pond.

-

Precipitation, stripping and absorption: The combination of precipitation, stripping andabsorption in the new HUBER modules is suitable for treatment of undiluted urine. The aim of- 253 -

6
this process is the recovery of the nutrients phosphorus and nitrogen in the form of solid andliquid fertilisers for plant beds in the ReUse Park.

-

Anaerobic treatment technology: The HUBER anaerobic treatment system produces biogas
from faeces and bio-waste. Due to the high process temperatures an hygienic fermentation
residue are produced, which is used as a soil improver in the orchard.

The aim of the HUBER ReUse Concept is ultimately the sustainable recycling of local water andmaterial flows. The treated wastewaters and value materials contained are reused in the company’spark in order to grow vegetable food for human consumption. By using innovative sanitary concepts
and practising the reuse of water and valuable material contained within wastewater in their own
office building HUBER is contributing to a substantial paradigm shift in wastewater treatment.
Wastewater is no longer considered waste material but valuable raw material for recovery of service
water, nutrients and energy. Particularly semi-arid countries where also the availability of nutrients for
agricultural application is frequently limited will benefit from these new developments in the field of
wastewater treatment (HUBER brochure, 2006).

4

References

Brochure (2006): „HUBER ReUse Concept“, Research and Development, Hans Huber AG, Berching.
BMU: http://www.bmu.de/meeresumweltschutz/kurzinfo/doc/2926.php
Cornel, P. (2004): Wasserresourcen, Wasserbedarf und Möglichkeiten der Wiederverwendung,
Schriftenreihe WAR, Band 159.
HUBER Report 2/2006. Aktuelle Nachrichten für Kunden und Freunde des Hauses HUBER, Hans
Huber AG, Berching (in print).
HUBER Report 2005/2006. Aktuelle Nachrichten für Kunden und Freunde des Hauses HUBER, Hans
Huber AG, Berching.
WHO (2006): “Guidelines for the safe use of wastewater, excreta and greywater”, Volume 2. Wastewater use in agriculture.
WHO/UNICEF (2005): Water for Life – making it happen. WHO/UNICEF Joint Monitoring Programme
for Water Supply and Sanitation.

- 254 -

Hans G. Huber
Karl-Josef Huber
1967

Josef Huber
Master Coppersmith
1948

Hans Huber
Master Coppersmith
1908

Johann Huber
Master Coppersmith
1872

Johann Wöhr
Master Coppersmith
1834

Anton Schreiber
Master Coppersmith
1830

Johann Schreiber
Master Coppersmith
1786

Steel

Copper

Waste
Water

PotableWater

Breweries,
Distilleries

Dr. Stefania Paris
Research and Development
HANS HUBER AG, Berching

Wastewater

Reuse of Treated
Wastewater

10th Japanese German Workshop
Berlin, 10th October 2006

Tradition - Quality - Progress

Stainl. Steel- 255 Potable Water

Breweries, Distilleries

The Quality
Company Worldwide

Conclusions●

Â ServiceÂ Stainless steel

Â Decentralized treatment - reuseÂ Advanced treatment• Systems for sedimentation tanks• Membrane bioreactors• Filtration plantsÂ Sludge treatment• Screening• Thickening and dewatering• Drying and handlingÂ Mechanical treatment• Screenings / grit separation and treatment• Storm water treatment

Business Units and Products

Current research projects on reuse

Reuse of treated wastewater●●

Reasons for alternative solutions

Research and Development●●

Company profile●

Contents

- 256 -y Croatiay Denmarky Hungaryy Japany Koreay Lebanony Malaysia
y Macedoniay Mexicoy New Zealandy Netherlandsy Great Britainy Italyy Polandy Singapore

y Slovakia

y South Africa

y Spainy Swedeny Switzerland

y United Arab. Emirates

y USA

Around 2.6 billion people have to live without sanitary facilities

Approx. 4,500 children die each day of diseases caused by dirty
water

●

●

Most people will live in the mega cities

Wider agricultural areas will be needed for covering the increasedfood demand and so more water will be required●●(UN, 2005)

The world population will increase to 9 billions until 2050●

Tomorrow

About 1.1 billion people do not have access to clean drinking water●(WHO/UNICEF, 2005)

Approx. 6.5 billion people live nowadays on earthy Ukrainey Turkeyy Thailand

y Taiwany Sudany Slovenia

y Saudi Arabia

y Russiay Romaniay Portugal

●

Today

Actual Situation and Prognosis

y Chiley Francey Belgiumy Norwayy Chinay Brazily Australia

y Greecey Bulgaria

y Czech Republic

y Argentina

y Finlandy Austria

Representatives

Sales Offices

Subsidiaries

Headquarters and Production in Berching, Germany

Global Presence

Water Scarcity: less than 1,000 m3/(Ca⋅a)

Water Stress: 1,000 to 1,700 m3/(Ca⋅a)Freshwater Stress

Wastewater is asource of water,
nutrients and energy !

Our Target…
…Solutions for the Future !

Development of innovative technologies
Research on alternative solutions for reuse● Cooperation with the university●●

Research and Development

- 257 -Some figures:y USA
y Japany Italyy India

350 l/(Ca•d)319 l/(Ca•d)249 l/(Ca•d)
25 l/(Ca•d)For example Germany: 127 l/(Ca•d)

Water Consumption in Household

Water Reuse / Nutrient Reuse⇒ Alternative solutions are needed !

(ATV, 2004; bfai, 2005)…The use of wastewater in agriculture can help communities togrow more food and make use of precious water and nutrient
resources. However it should be done safely to maximize publichealth gains and environmental benefits…
(WHO Guidelines, 2006)(approx. 20%)(> 70%)(approx. 10%)HOUSEHOLD

Medicineso not present++ moderate present+
barely present+++ strong present

+

41 %

++

30 kg/(Ca*a)

COD

34 %

++

1,8 kg/(Ca*a)

K

10 %

3%

27,000Grey water

+++

+

12 %

54 %

50 %

87 %

500

Yellow waterBlack water

Grey water+++

0,75 kg/(Ca*a)P

Pathogenic
bacteria

4-5 kg/(Ca*a)42,000

Domestic
wastewaterN

Amount l/(Ca*a)Parameter

Domestic
wastewater

+

+++

47 %

12 %

40 %

10 %

50

FaecesYellow water

Brown water(Otterpohl, 2001)

o

o

0%

0%

0%

0%

14,000

Flushing
water

Domestic Wastewater Flows and Components

INDUSTRYAGRICULTURE

billion m3…Between 1990 and 2004, sanitation coverage in the developingworld increased from 35 to 50 per cent. This meant that 1.2 billion
people gained access to sanitation during this period. Another 300
million people should have been served, however, to keep the world
on track towards the 2015 target... (MDGs Report, 2006)

Increase of the worldwide water consumption

Halve, by 2015, the proportion of people without sustainable
access to safe drinking water and basic sanitation.

Water Consumption of Each Sector

Target (MDG: Johannesburg, 2002)

MDGs and Alternative Solutions

- 258 -Operation of lakes and ponds

Artificial ground water recharge●●

Effluent for
Reuse

55
85
80

130
100

Corn
Grassland

205

200

65

K2O
Ca
32
49
46

Ca
23
25
19

Pre-treatment with screening (HUBER Ro2)
Sedimentation pond
Storage and stabilization in deep reservoir

HUBER
Wedge Section
ScreenWastewater

Anaerobic Lagoons,
Oxidation Ponds,
Aerated Lagoons, etc.
Storage andStabilization in DeepReservoir ≥ 6 m

Min. Level (End of
Irrigation Season)

Max. Level (Beginningof Irrigation Season)(Usually by
Drip Irrigation)(modified according to Libhaber, 2004)⇒ CSB-reduction and hygienisation !

●

●

●

Treatment steps:

25

32

30

Ca

106

113

70

Ca

186

186

60

Ca

Semi-central treatment of greywater for production of service
water, Darmstadt and afterwards China
Onsite treatment of separated wastewater flows for closing thewater and nutrients loop, Berching and Vietnam●

Decentralized treatment of runoff from roadways for ground water
recharge, Munich
●

●

68

73

47

Ca

Integrated wastewater and waste disposal systems for mega cities
with thermophilic digestion of primary sludge and biowaste, Lima

Treatment of Separated Wastewater Flows●

Economic decentralized treatment of wastewater with finescreening for irrigation, Algeria

Treatment of Municipal Wastewater and Sludge
●

22

28

26

Ca

141

138

45

Ca

Black water(Bundesministerium für Land und Forstwirtschaft, 2005)

114

111

36

Ca

Yellow water

Required number of capita for the use ofWastewater* according to the guidelines for proper fertilization

P2O5

N
120

(kg/ha)Nutrient
requirement*

Wheat

Plant

Reuse of Water and Nutrients

Settlements- Flushing toilets- Washing laundry- Use as fire water- Use for air conditioning●

Current R&D Projects

Irrigation of parks●

Nutrient Requirement and Covering Possibility
Nutrient requirement of different plants and required amount (as capita) of different
wastewater flows for covering this nutrient requirement

Simple Treatment of Municipal Wastewater for Irrigation

Irrigation in agriculture

●

●

●

Removal of particulate substances
No elimination of nutrients● Disinfection

Goals of Wastewater Treatment

Agricultural Utilization

Real application for Jerusalem, Israel

Industrial processes●

Depending on water quality, the reuse of treated wastewater
is suitable for:

Reuse of Treated Wastewater for
Reduction of Freshwater Consumption

- 259 -Pre-treatment with fine screening (HUBER Pipestrainer)
Sedimentation
Disinfection with UV

LiquidIrrigation

Notüberlauf

Schlammfang
Schachtunterteil

Schachtring mit
Zykloneinsatz

Schachtring

ZulaufTragschicht

Einlaufelement
mit Grobfilter

Speicher/Ablaufleitung

Ablauf

Detailskizze haufwerksporige Rinne

Rinne

Cooperation with Prof. Horn, Technical University of Munich - Self financed

Trichter für
Schlammfang

Absaugrohr für
Schlamm

HUBER
Edelstahlfilter mit
variablen Füllungen

GehwegFahrbahn

Filtration through porous concrete
Sedimentation
Filtration through different materials (HUBER Hydro-Filt)⇒ Retention of heavy metals and PAHs!

●●●

Treatment steps:

Precipitation/Flocculation

Dosing Station

Screenings

HUBER
Microscreen

Storage

SurplusSludgeHUBER Membrane
Bio-Reactor

UVDisinfection

Cooperation with Prof. Cornel, Technical University of Darmstadt - Co-financed by the BMBF (50%)

Grey Water

HUBER
Sand Filter● Microscreening (HUBER RoDisc)● Sand filtration (HUBER ContiFlow)● Activated sludge with membrane filtration (HUBER MCB)

Comparison of different treatment combinations:

Outflow

Outflow

Fermentation
Residue for Soil
Conditioning

Outflow for Soil
Conditioning

Biogas for Energy andHeat Production

Reuse for Toilet Flushing

Aerobic
Treatment

Reuse for Artificial Ground Water Recharge

HUBER
Thermophilic
Biogas Reactor

Sedimentation

Semi-central Greywater Treatment, Darmstadt

Existing Sewer System

Irrigation ofGreen

Municipal Wastewater(after screen 6 mm)

Treatment of Runoff from Roadways, Munich

SludgeUV-Disinfection

Container

Cooperation with Prof. Jumar, IFAK - Co-financed by the BMBF (50%)

Screenings

LiquidSedimentation

Mechanical pre-treatment with screening
Sedimentation
Thermophilic digestion (HUBER Biogas Reactor)⇒ Reduction of organic substrate and hygienisation !

●

●

●

Cooperation with Prof. Rudolph, University of Witten/Herdecke - Co-financed by the BMBF (50%)

Wastewater

HUBER
Fine Screen⇒ Reduction of suspended solids and hygienisation !

●

●

●

Treatment steps:

Reuse of Biogas and Digested Sludge

Reuse for Irrigation of Green

Primary Sludge

Treatment steps:

Thermophilic Digestion of Sludge in Lima

Economic Treatment of Wastewater in Algeria

wash water- 260 -Unseparated wastewater
Grey, yellow and brown water

Utilization of treatedwastewater and nutrients--

Implementation of alternative
treatment technologies

Productionof food in the
ReUse Park

Recovery of waterand nutrients in the
Recovery Plant

Agri-Park

Agri-Park

Aqua-Park●

Aqua-Park

Irrigation of green with treated wastewater
Fertilization of crop fields and fruit trees withnutrients from wastewater●●

Feeding a fish pond with treated grey water
Operation of a fish pond with ground water(HUBER Brochure, 2006)●

HUBER ReUse Park

Own project - Self-financed⇒ Closing the material and water loop!

●●

Goal: to get most of the value out of wastewater !

An Example of “Good Management Practice”

y Rainwatery Grey, Yellow and
Brown Watery Unseparated
Wastewater

Closing the Loop

Recovery Plant

Wastewater:
Wastewater:a Source

Service water
Nutrients

Infiltration

ReUse
Park

Vegetable andanimal food- Recovery Plant and ReUse Park -HUBER ReUse Concept
Wastewater a Source for Water, Nutrients and Energy

HUBER ReUse Concept in Berching- 261 -Service water, nutrients and energy can begained from wastewater and its separated
flows

The quality request for treated wastewater
depend on the specific reuse option

A sustainable resource management
should be achieved through substitution of
fresh water and mineral fertilizer

The agricultural utilization of treatedwastewater is a reasonable practice forarid and semiarid regions

●

●

●

●

(Press release, DBU)

Hans G. Huber receives the highest endowed
European environmental award for outstandingachievements in global environmental protection
for his great commitment to developing and successfully promoting highquality, reliable technologies for fresh water and wastewater treatment,
especially also in emerging and developing countries.

The Deutsche Bundesstiftung Umwelt (DBU), oneof Europe's largest foundations that promotes
innovative and exemplary environmental projects,
awards the Deutschen Umweltpreis 2006 (German
Environmental Award 2006) to Hans G. Huber,
member of the board of directors of the Hans
Huber AG, for his innovative decentralised wastewater treatment technology.

German Environmental Award 2006
October 27, 2006

Wastewater is valuable resource!

The application of the right technology
enables to get most of the value out of
wastewater●

Conclusion

Thank you for your attention !

Research and Development of
Innovative Water Technologies

European Water
Partnership

European Academy of
Sciences and Arts

International Water
Association

Obligation of the water profession for our common future“Water Supply and Sanitation for All”

on

Conference Center, Berching - September 27-28, 2007

3rd International Huber Symposium

Wastewater - A Source !

HUBER Solutions – Technologies for Water !

- 262 -Environmental Protection Agency (EPA, 2004)
Guidelines for Water Reuse- mikrobiologische und physisch/chemische
Anforderungen

Food and Agriculture Organization (FAO, 1994)
Water Quality for Agriculture - Irrigation and Drainage Paper- physisch/chemische AnforderungenStaatliche, regionale bzw. lokale Vorschriften

●

●

●

Treatment of combined sewage with a chemical andmechanical system, prevention of water pollution in
BerlinCo-digestion of septic sludge and biowaste in semicentral plants, IWRM on Java

Specific treatment of yellow- and brown water at GTZ
building, alternative sanitary system in Eschborn

Wastewater treatment with the MBR process, artificial
groundwater recharge in the Jordan Valley

●

●

●

●

Further Projects Applied for Financing

World Health Organisation (WHO, 2006)
Guidelines for the safe use of wastewater, excreta andgreywater- Risikobewertung (DALY-Konzept)●

Standards und Vorschriften

●

●

●

Small compact filtration unit
Production of high quality outflow

Recovery of phosphorus and nitrogen in the form of fertilisers---

2-step anaerobic thermophilic reactor
Production of biogas and high quality fermentation residue

for faces and biowaste

Biogas Reactor (HUBER 2T-BioR)

2-step chemical-physical process-

for yellow water

Precipitation Reactor, Stripping&Absorption Column(HUBER NuRec and NitriRec)--

for wastewater, black and grey water

Membrane Bio-Reactor with HUBER MCBs

HUBER Technologies of the Recovery Plant

WHO (2006): “Guidelines for the safe use of wastewater, excreta andgreywater”, Volume 2. Wastewater use in agriculture.

Paris und Wilderer (2002): „Integrierte Wasser Ver- und Entsorgungskonzepte im internationalen Vergleich“, in: 35. Essener Tagung (M.
Dohman, ed.), Vol. 188, 45/1-15.

Otterpohl (2001): „Stand der Technik und Entwicklungen für den urbanen
Bereich“, in Berichte aus Wassergüte- und Abfallwirtschaft, TU München,Band 161.

Hans Huber AG (2006): Brochure „HUBER ReUse Concept“, Research andDevelopment, Berching.

DWA (2004): Brochure „Facts and Figures on the Subject of Water“,Publisher: DWA German Association for Water, Wastewater and Waste,
Hennef.

Cornel und Weber (2004): „Erzeugung von Bewässerungs-wasser durcheine chemisch physikalische Abwasserbehandlung“, 73. Darmstädter
Seminar, TU Darmstadt, Band 159.

References