Water treatment and reuse

The treatment and reuse of water has now become a top priority worldwide. In many countries, water scarcity is so great and natural sources so depleted or polluted that it is no longer possible to do it without water treatment systems. For environmental reasons alone, water recycling is now absolutely essential for new construction as well as retrofit and even municipal projects worldwide.

Our water sources include rainwater or surface water, well water, effluent water from small wastewater treatment plants or greywater. Depending on the degree of contamination and treatment technology, different water qualities can be achieved. It can be used to irrigate plants and be fed into the household as process or drinking water. We specialize in decentralized and semi-decentralized systems for all climatic conditions. For over 25 years and in well over 30,000 systems, our customers are now recycling water worldwide, saving several million m³ of water annually. We develop, produce and supply a huge range of products from simple rainwater harvesting for the garden to complex treatment systems for greywater or potable water supply. The systems are used at:

Domestic houses
Apartment houses
Hotels
Office buildings
Production plants
Public buildings
Schools
Quarters

Die Abbildung zeigt verschiedene AQUALOOP Systeme: AL-W48560, AL-GW32400, AL-GW18000, AL-GW5400, AL-GW3600 und AL-GW600. Die Systeme sind als schwarze Tanks dargestellt, die teilweise geöffnet sind, um ihre innere Ausstattung zu zeigen. Das Bild hebt die Vielfalt und Funktionalität dieser Systeme hervor.

Ready-to-connect complete systems – simple, fast, and safe

Our ready-to-connect AQUALOOP complete systems include all the necessary treatment technology, including treatment and clear water storage tanks. This significantly minimizes planning, delivery, and installation time. Simply select the appropriate size from our extensive range of standardized systems. The systems are optimized for low transport costs and minimal installation space. Adaptations to your specific site conditions are possible.

Greywater Recycling
Drinking water from rainwater, groundwater
Surface water Process and cooling water
Effluent water from wastewater treatment plants

Fields of application

Rainwater harvesting

With rainwater, a productive source is available in many areas of the world, providing you with free water of excellent quality.

Learn more about rainwater harvesting for commerce

Learn more about rainwater harvesting for single-family homes

Greywater recycling

In greywater recycling, daily, low-polluted water from showers, hand-washing sinks and the washing machine is treated and reused.

Learn more about greywater recycling for commerce

Learn more about greywater recycling for single-family homes

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Potable water production

The quality of rainwater is often so good that it can be made drinkable with just a few treatment steps.

Process water from small sewage treatment plants

The discharge water from a small sewage treatment plant can be treated into process water and used for toilet flushing or garden irrigation.

Adiabate_Kühlung_Mann-schwitzt_klein.jpg

Adiabatic building cooling

Use rainwater to save 80% energy for building cooling and costs for water softeners.

Purification stages in water treatment

In the field of water treatment, different filters and filter stages can be used to create different quality levels in the water. These range from process water to potable water.

Source	Use	Filter method
Source	Use	PURAIN / PLURAFIT	AQUALOOP membrane	UV filtration	Activated carbon
Rainwater	Potable water	♦	♦	♦	♦
	Irrigation	♦
	Adiabatic cooling	♦	♦
Greywater	Process water	♦	♦		♦
Effluent water of a small sewage treatment plant	Irrigation	♦	♦	♦	♦
	Process water	♦	♦		♦

Auf dem Bildschirm ist eine Softwareoberfläche zu sehen, die Informationen zum Recycling von Grauwasser anzeigt. Es sind Diagramme und technische Daten zu einem Recyclingprozess dargestellt, einschließlich Bezeichner und Parameter zur Überwachung des Systems.

I-CONNECT Monitoring

With I-CONNECT, consisting of a control unit and a web application, you can easily monitor, control and configure your water treatment systems yourself.

Secure plug & play internet access without router settings
Remote access to the systems via web portal or app
Transmission of fault and status messages via push and email
Clear system visualization
Automatic logging and storage of selected parameter data.
Optimization of system operation through data evaluation
Online update of the control unit software possible

I-CONNECT

AQUALOOP installation kit

The AQUALOOP installation kit comprises a package of components for biodegradation and ultrafiltration, which can be used to create various modular systems for water treatment and reuse.

Bioreactor technology for pre-treatment of organically contaminated water
sterilization and crystal-clear water with unique ultrafiltration with hollow fibre membrane technology
Modular design for any system size
minimal maintenance thanks to integrated backwash technology
Optimum price-performance ratio

More about the AQUALOOP installation kit

INTEWA_DRAINMAX-Wasserspeicher-RWN-Betriebswasser-Ansicht.jpg

DRAINMAX storage systems

With our food-safe EPDM membrane made from a single piece, the DRAINMAX tunnel system can be turned into completely watertight water storage tanks with a capacity of up to 120 m³. Larger systems can be easily connected or welded on site.

Sedimentation, filtration, and separation series
Watertightness with EPDM membranes made from a single piece up to 120 m³
Food-safe EPDM material, free of harmful substances
Can be connected as required, many system sizes available
Lowest transport costs thanks to stackability on pallets
Extremely quick to install
Load capacity (60 t) DIBt certified DRAINMAX
Optimal price-performance ratio

zum Wasserspeicher System

System components for water treatment

Project support from A to Z

There are many aspects to consider when planning and implementing a construction project. In a short time, you have to make many decisions that affect the entire construction phase. We accompany you through all phases, from planning to execution of your project.

Concept development and price calculation for the preliminary planning
Dimensioning with Rainplaner Software
Compilation of tender texts
Creation of CAD system drawings
Support of the executing companies
Commissioning Service
Monitoring of the systems

References with water treatment

In the field of water treatment and reuse, we have already been able to implement a number of small and large projects. On average, we have been able to save more than 50% of water consumption.

AQUALOOP Greywater Recycling in Denver

Eine Hand hält ein Glas, während aus einem Wasserhahn frisches Wasser in das Glas fließt. Der Hintergrund zeigt eine Spüle. Das Bild vermittelt den Moment des Wasserfüllens.

From rain to drinking water in a single-family home

Ein mehrstöckiges Gebäude in leuchtenden Farben (Rot, Gelb) wird in einem städtischen Gebiet errichtet. Um das Gebäude herum sind Baustellen und zahlreiche kleine Häuser zu sehen. Im Hintergrund sind weitere städtische Strukturen und Parkplätze sichtbar.

Social housing project utilises rainwater infiltration

Das Bild zeigt ein modernes, fünfstöckiges Gebäude mit einer hellen Fassade und vielen Fenstern. Auf dem Dach sind Solarpanels installiert. Vor dem Gebäude befindet sich ein geebneter Weg, gesäumt von kleinen Bäumen und einem grünen Rasenbereich.

Greywater treatment in a dormitory in Berlin

Ein modernes, vierstöckiges Mehrfamilienhaus mit weißen Wänden und vielen großen Fenstern. Jeder Balkon ist mit Pflanzen dekoriert. Um das Gebäude herum befinden sich gepflegte Grünflächen und Bäume, die eine einladende Atmosphäre schaffen.

Greywater treatment in multi-generational house, Hamburg

AQUALOOP Greywater Recycling GW300

Grey water system at university in Denver

Greywater recycling in indoor swimming pool

AQUALOOP Greywater Recycling GW5400

Greywater recycling in social housing in France

AQUALOOP Greywater Recycling GW5400

Drinking water production from rainwater in Croatia

AQUALOOP, PURAIN

Self-sufficient container house

AQUALOOP direct ultrafiltration

Potable water from rainwater at INTEWA

AQUALOOP, RAINMASTER, PURAIN

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Michelle & Barack Obama Sports center uses greywater

AQUALOOP, I-CONNECT, PURAIN

Hotel with graywater recycling & adiabatic cooling in LA

AQUALOOP, I-CONNECT, PURAIN

Smart water recycling in a museum in Los Angeles

AQUALOOP, I-CONNECT, PURAIN

Adiabatic cooling & use of greywater in office building

AQUALOOP, I-CONNECT, PURAIN

School in LA uses water reuse

AQUALOOP, PURAIN

Rainwater harvesting in supermarket

PURAIN

Guest house uses greywater recycling incl. UV treatment

AQUALOOP, PROFI

Greywater recycling in school in Poland

AQUALOOP, PURAIN

Sustainable drinking water from rainwater harvesting

AQUALOOP, RAINMASTER

Smart greywater harvesting in the Black Forest

AQUALOOP, PROFI

Campsite Gerhardhof relies on sustainable use of grey water

AQUALOOP, PURAIN, I-CONNECT

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Ecological greywater harvesting in the French embassy

AQUALOOP

AQUALOOP system in the veterans' home

Greywater recycling

Design building only uses rainwater

Potable water from rainwater, PURAIN

Onsite water treatment of greywater & rainwater

Greywater recycling, rainwater harvesting, AQUALOOP

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Use of rainwater for a grammar school

PURAIN, RWZ

Eataly in Los Angeles stages grey water

Greywater recycling, AQUALOOP, PURAIN

Single-family eco-house in the Ardennes

Drinking water from wells and rainwater, AQUALOOP

Rainwater harvesting in Singapur

Rainwater harvesting, AQUALOOP, RAINMASTER

Rainwater treatment for livestock watering

AQUALOOP, PURAIN, RAINMASTER

Drinking water for a Tiny House

Drinking water from rainwater, AQUALOOP, PURAIN

Weekend house in the Black Forest

Drinking water from rainwater AQUALOOP

Tiny House in the USA

Potable water from rainwater, AQUALOOP

Grey water recycling for 32 residential units

AQUALOOP, RAINMASTER, PURAIN

Rainwater harvesting in Oxford

RAINMASTER

Rainwater utilisation in Belgium

RAINMASTER, PURAIN

Belgian new building uses rainwater

RAINMASTER, PURAIN

Large scale greywater system in Sacramento

Greywater recycling AQUALOOP

McDonald's branch opts for rainwater

Rainwater harvesting, stormwater attenuation, RAINMASTER, PURAIN

Cooling of machines with rainwater

Rainwater harvesting, RAINMASTER

Aachen city council building uses rainwater

RAINMASTER

Car wash with rainwater

Rainwater harvesting, RAINMASTER

Retirement home uses rainwater

RAINMASTER

Stream water supplies single family house

Surface water treatment, AQUALOOP, RAINMASTER

Potable rainwater system for Gulf State Park

PURAIN

AQUALOOP use in Munich

Greywater recycling, AQUALOOP, RAINMASTER, PURAIN

Greywater recycling in Botswana

AQUALOOP, PURAIN

Use of rainwater in a kindergarden

RAINMASTER

Independence through rain- & grey water

Greywater recycling & rainwater harvesting, AQUALOOP, PURAIN

Simple & inexpensive: The best home water source

Greywater recycling & rainwater harvesting, AQUALOOP, RAINMASTER, PURAIN

Ecologically built house in Christchurch

Greywater recycling & rainwater harvesting, AQUALOOP, RAINMASTER, PURAIN

AQUALOOP use in Olomouc

Greywater recycling & rainwater harvesting, AQUALOOP, RAINMASTER

Greywater use in South Africa

Greywater recycling, AQUALOOP

School for environmental technology

Greywater recycling & rainwater harvesting, AQUALOOP, RAINMASTER

Hotel Galant uses AQUALOOP

Greywater recycling & rainwater harvesting, AQUALOOP

Dormitory uses grey water recycling

AQUALOOP, PURAIN

Residential building in Tehran uses grey water recycling

AQUALOOP, PURAIN

AQUALOOP use for a single family house

Greywater recycling

Use of grey water in Prague

Greywater recycling, AQUALOOP

Family from Auckland counts on grey water

AQUALOOP, RAINMASTER

Test facility testing institute PIA Aachen

Greywater recycling, AQUALOOP

Centre of the Christian Brothers

Grey water recycling, AQUALOOP

Adiabatic cooling in the archdiocese of Siegburg

AQUALOOP, RAINMASTER, PURAIN

Adiabatic cooling in a technology centre

AQUALOOP, PURAIN, RWZ

Drinking water from Lake Kandawgyi

Surface water treatment, AQUALOOP

Water treatment at the Hlang River

Surface water treatment, AQUALOOP

Collected roof water from factory

Rainwater harvesting, RAINMASTER

Saving drinking water in South Africa

Rainwater harvesting, RAINMASTER, PURAIN

Robin Hood's headquarters uses rainwater

RAINMASTER

Water optimization in office buildings

Rainwater harvesting, RAINMASTER, PURAIN

Single family house uses rainwater

RAINMASTER

Use of grey water in New Zealand

AQUALOOP

Rainwater harvesting in Wales

RAINMASTER

Upgrading old buildings with rainwater utilisation

RAINMASTER, PURAIN

Resource-efficient supply in Luxembourg

Rainwater harvesting, RAINMASTER, PURAIN

Pundles Farm uses rainwater

RAINMASTER

House in Queenstown uses station wagon

Grey water recycling & rainwater utilisation, AQUALOOP

Fire fighters on austerity course with rainwater

Rainwater harvesting, RAINMASTER

Polish campsite uses AQUALOOP

Surface water treatment

AQUALOOP Tap as relief operation in India

Surface, rain & river water treatment

AQUALOOP MEM field system

AQUALOOP

INTEWA partner from Belgium installs products themselves

Drinking water from rainwater, AQUALOOP

Rainwater harvesting in South Africa's Mediterranean climate

RAINMASTER, PURAIN

Dimensioning of INTEWA products

Planning sheets for different applications

Rainplaner software

Planning tools

With our knowledge portal, we offer you a wide range of information on the topics of rainwater management and water reuse.

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Commercial

Domestic

Further information

Infiltration

Attenuation

Further information

Main products

Further products

Downloads

INTEWA headquarters

Further information

Water treatment and reuse

Ready-to-connect complete systems – simple, fast, and safe

Fields of application

Rainwater harvesting

Greywater recycling

Potable water production

Process water from small sewage treatment plants

Adiabatic building cooling

Purification stages in water treatment

I-CONNECT Monitoring

AQUALOOP installation kit

DRAINMAX storage systems

System components for water treatment

AQUALOOP growth bodies

AQUALOOP growth bodies

AQUALOOP-Direct

AQUALOOP-Direct

I-CONNECT greywater recycling

I-CONNECT greywater recycling

AQUALOOP prefilter

AQUALOOP prefilter

AQUALOOP blower

AQUALOOP blower

AQUALOOP membranes

AQUALOOP membranes

AQUALOOP membrane station

AQUALOOP membrane station

Project support from A to Z

References with water treatment

AQUALOOP Greywater Recycling in Denver

From rain to drinking water in a single-family home

Social housing project utilises rainwater infiltration

Greywater treatment in a dormitory in Berlin

Greywater treatment in multi-generational house, Hamburg

Grey water system at university in Denver

Greywater recycling in indoor swimming pool

Greywater recycling in social housing in France

Drinking water production from rainwater in Croatia

Self-sufficient container house

Potable water from rainwater at INTEWA

Michelle & Barack Obama Sports center uses greywater

Hotel with graywater recycling & adiabatic cooling in LA

Smart water recycling in a museum in Los Angeles

Adiabatic cooling & use of greywater in office building

School in LA uses water reuse

Rainwater harvesting in supermarket

Guest house uses greywater recycling incl. UV treatment

Greywater recycling in school in Poland

Sustainable drinking water from rainwater harvesting

Smart greywater harvesting in the Black Forest

Campsite Gerhardhof relies on sustainable use of grey water

Ecological greywater harvesting in the French embassy

AQUALOOP system in the veterans' home

Design building only uses rainwater

Onsite water treatment of greywater & rainwater

Use of rainwater for a grammar school

Eataly in Los Angeles stages grey water

Single-family eco-house in the Ardennes

Rainwater harvesting in Singapur

Rainwater treatment for livestock watering

Drinking water for a Tiny House

Weekend house in the Black Forest

Tiny House in the USA

Grey water recycling for 32 residential units

Rainwater harvesting in Oxford

Rainwater utilisation in Belgium

Belgian new building uses rainwater

Large scale greywater system in Sacramento

McDonald's branch opts for rainwater