Clean drinking water through sustainable use of natural resources
Clean drinking water is one of the most important resources for life on earth. In view of increasing water scarcity,
growing population figures and the consequences of climate change, the sustainable use and treatment of water is becoming
more and more important. One promising option for relieving the burden on conventional water supply systems is the use of
rainwater. Rainwater falls in sufficient quantities in many regions and is relatively clean compared to other water sources. With suitable technology, it can be collected, filtered and treated so that it can be used as drinking water.
A water treatment system that converts germ-free rainwater, surface water and well water into hygienically safe drinking water is therefore an innovative solution, especially for regions with limited access to fresh water. Depending on the inlet water quality, the treated water reaches drinking water quality and can be used for various applications.
Flexible solutions for clean water wherever it is needed
PureWater stands for innovative water treatment at the highest level. Rainwater, surface water or well water is treated using multi-stage filtration and disinfection to produce hygienically safe drinking water. This creates sustainable, reliable solutions for households, businesses and regions where a centralised water supply is not available or only available to a limited extent.
- Rural regions without a centralised water supply
Ideal for remote areas where there is no connection to the public water network. - Developing countries / disaster areas
Fast and flexible supply solutions in the event of water shortages or emergency situations. - Sustainable buildings and eco-settlements
Deployment in so-called "green" buildings to achieve water self-sufficiency. - Agriculture / horticulture
Treatment of rainwater for safe irrigation or household use. - Islands or coastal regions with access to salt water
Rainwater offers a simple alternative to energy-intensive seawater desalination.
Special features of our water treatment system for rainwater
- Multi-stage cleaning:
The system usually consists of several stages (e.g. sedimentation, filtration, activated carbon filter, UV disinfection) to remove dirt, bacteria and pollutants. - Adaptable to location and requirements:
Systems can be adapted in size and technology to different geographical and climatic conditions as well as to water requirements. - Sustainable use of natural resources:
Rainwater as a source means that no groundwater or tap water needs to be extracted. - Combinable with smart technologies:
Modern systems are often equipped with sensors and controls that automate the cleaning process and monitor the water quality.
Innovative filtration technology for clean, reusable and resource-saving rainwater
- Drinking water from rainwater
With PureWater-direct ultrafiltration, rainwater collected from roofs is turned into valuable drinking water. - Water from small wastewater treatment plants
With PureWater-direct, the run-off water from small wastewater treatment plants can be cleaned and disinfected and used, for example, as process water for toilets. - Drinking water from surface water
Surface waters such as lakes, streams and rivers can be treated for numerous other uses with PureWater-direct technology. - Groundwater with iron and manganese
The iron and manganese often contained in groundwater can be oxidised directly with the PureWater technology using atmospheric oxygen in the filtration tank at a suitable pH value. - Adiabatic cooling
Save 80% energy for cooling buildings and costs for water softening systems with rainwater. - Laundry and washing machine water
PureWater is suitable for treating washing machine water. - Recycling of water for aquariums and fish farming
PureWater is suitable for the treatment of water for aquariums and fish farming.
Find out more about our water treatment solutions in the ‘Sustainable Water Technology’ catalogue:
FAQ
The size of a rainwater tank basically depends on three factors:
- Local rainfall
- Angeschlossene Regenauffangfläche
- Regenwasser-Bedarf
An underground tank is ideal for storing rainwater, as the soil protects the tank from light and heat. The temperature of water from the underground tank is only 6 to 8 °C all year round. Due to the darkness and temperature, no algae or microorganisms can form. This ensures constant water quality. Even with an above-ground rainwater tank, it is important to ensure that it is as impermeable to light as possible. To prevent the water from heating up too much, it should be placed away from light.
In principle, building regulations are state law - drinking water supply and wastewater disposal are subject to local self-administration. We can therefore only make general statements on construction and commissioning here. Ultimately, you must enquire with the local building authority and your water authority as to which specific regulations are relevant for you. If you use rainwater in the house (e.g. for
toilets and washing machines), you must apply to the water supplier for partial exemption from the water supply.
Earth and cellar tanks must be equipped with an overflow through which the water can overflow into the sewerage system or an infiltration system. When connecting to the sewerage system, the overflow should be above the backflow level of the sewerage system. If necessary, a backflow flap should be installed. Above-ground tanks should always be connected with a downpipe filter. This stops the inflow of water when the rainwater tank is full and the water flows through the downpipe into the sewer.
Many underground tanks, in conjunction with a cast iron or concrete cover, can be driven over by car or lorry. There are therefore almost no limits to the design of the surfaces above them.
