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

With our systems, it is usually possible to save over 50%, and in some cases even up to 100%, of the original water consumption and thus the water costs. Due to the strongly rising prices and low interest rates, many systems are now even so profitable that an investment pays for itself within a few years. Operator models are possible for larger systems.

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.

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Adiabatic building cooling

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

Pre-assembled complete systems

Our complete systems with AQUALOOP ultrafiltration membranes as well as biological and chemical purification offer the best technologies for producing reusable process water in the smallest of spaces. We offer our systems in nine different sizes in order to be able to present a suitable solution for every commonly required treatment volume. Find out more about the technology and design of our complete systems, which are suitable for recycling grey water and wastewater from small wastewater treatment plants.

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	♦	♦		♦

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

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.

Greywater recycling in social housing in France (Kopie 1)

AQUALOOP Greywater Recycling GW5400

Greywater recycling in social housing in France

AQUALOOP Greywater Recycling GW5400

Drinking water production from rainwater

AQUALOOP, PURAIN

Self-sufficient container house

AQUALOOP direct ultrafiltration

Potable water from rainwater at INTEWA

AQUALOOP, RAINMASTER, PURAIN

Michelle_and_Barack_Obama_Sports_Center_Los_Angeles.jpg

Michelle and Barack Obama Sports center uses greywater recycling

AQUALOOP, I-CONNECT, PURAIN

Marriott Hotel Moxy with greywater recycling & adiabatic cooling

AQUALOOP, I-CONNECT, PURAIN

Smart water recycling in a museum in Los Angeles

AQUALOOP, I-CONNECT, PURAIN

Adiabatic cooling & use of greywater in the Lumen Office Campus

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 in Bavaria

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 Cologne

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

Fields of application

Rainwater harvesting

Greywater recycling

Potable water production

Process water from small sewage treatment plants

Adiabatic building cooling

Pre-assembled complete systems

Purification stages in water treatment

I-CONNECT Monitoring

AQUALOOP installation kit

System components for water treatment

AQUALOOP growth bodies

AQUALOOP growth bodies

Fire water

Fire water

I-CONNECT stormwater management

I-CONNECT stormwater management

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

Greywater recycling in social housing in France (Kopie 1)

Greywater recycling in social housing in France

Drinking water production from rainwater

Self-sufficient container house

Potable water from rainwater at INTEWA

Michelle and Barack Obama Sports center uses greywater recycling

Marriott Hotel Moxy with greywater recycling & adiabatic cooling

Smart water recycling in a museum in Los Angeles

Adiabatic cooling & use of greywater in the Lumen Office Campus

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 in Bavaria

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

Cooling of machines with rainwater

Aachen city council building uses rainwater

Car wash with rainwater