solution finder

solution finder

Further Resources: Water Purification

Bank Filtration

The contents of this factsheet are results of the Indo-European Project NaWaTech- “Natural Water Systems and Treatment Technologies to cope with Water Shortages in Urbanised Areas in India”, co-financed by the EC and the DST – India.
Subscribe to Further Resources: Water Purification
  • Hardware
  • Software

Further Resources: Water Purification

SODIS

When microbially polluted water is exposed to solar light in transparent PET bottles, bacteria, virus and some parasites are inactivated by the solar…
View Factsheet

UV-tubes

The bactericidal effect of concentrated ultraviolet (UV) light is used in many areas and in many set-ups. For drinking water treatment, simple,…
View Factsheet

WATA®

Chlorination, which means adding active chlorine (sodium hypochlorite) to water, is the most common method used for disinfecting of drinking water.…
View Factsheet

Biosand Filter

The biosand filter (BSF) is a simple household water treatment device, which is an innovation on traditional slow sand filters specifically designed…
View Factsheet

Chlorination

Water disinfection by chlorination was massively introduced in the early twentieth century. It set off a technological revolution in water treatment…
View Factsheet

Colloidal Silver Filter

Colloidal Silver Filters (CSF) are simple household water treatment devices based on a physical treatment, which does not require energy supply. CSFs…
View Factsheet

Household Water Treatment and Safe Storage (HWTS)

Lack of improved access to safe drinking water together inadequate sanitation and hygiene are the overwhelming contributors to the 1.8 million annual…
View Factsheet

Boiling

Boiling drinking water with fuel is the oldest and most commonly practiced household water treatment method. According to WHO, water needs to be…
View Factsheet

Ceramic Candle Filter

Ceramic candle filters are simple devices made out of clay and used to filter drinking water in order to removes turbidity, suspended materials and…
View Factsheet

Sedimentation

Sedimentation is recommended as simple pre-treatment of water prior to application of other purification treatments such as filtration and…
View Factsheet

Straining and Filtration

Straining is a very simple method of filtration. In this process, water is poured through a piece of cloth, which removes some of the suspended silt…
View Factsheet

Solar Pasteurisation

Contrary to belief, it is not necessary to boil certain water to make it safe to drink. Heating water to 65°C (149°F) for 6 minutes, or to a higher…
View Factsheet

Water Quality Testing

In many parts of the world, water is not safe enough to drink. There are basic qualitative observations that quickly determine if water is not safe…
View Factsheet

Advanced Oxidation Processes

Hazardous organic waste, widely spread in water by industrial, military and domestic sources, is an emerging issue. Advanced Oxidation Processes (…
View Factsheet

Advanced Filters

Advanced point-of-use filter systems of various designs, costs and effectiveness are today readily available all over the world. While these systems…
View Factsheet

Treatment Plant Set-up

Centralised drinking water treatment plants treat large amounts of water from many households in one single spot and consequently most often require…
View Factsheet

Slow Sand Filtration

Slow sand filtration is a type of centralised or semi-centralised water purification system. A well-designed and properly maintained slow sand filter…
View Factsheet

Rapid Sand Filtration

Rapid sand filtration is a purely physical drinking water purification method. Rapid sand filters (RSF) provide rapid and efficient removal of…
View Factsheet

Sedimentation (centralised)

Sedimentation is a simple, physical pre-treatment of water prior to application of other purification treatments such as filtration and disinfection…
View Factsheet

Adsorption (Activated Carbon)

Activated carbon filtration is a commonly used technology based on the adsorption of contaminants onto the surface of a filter. This method is…
View Factsheet

Membrane Filtration

Membranes are thin and porous sheets of material able to separate contaminants from water when a driving force is applied. Once considered a viable…
View Factsheet

Coagulation-Flocculation

Coagulation-flocculation is a chemical water treatment technique typically applied prior to sedimentation and filtration (e.g. rapid sand filtration…
View Factsheet

Ion Exchange

Ion exchange is a water treatment method where one or more undesirable ionic contaminants are removed from water by exchange with another non-…
View Factsheet

Arsenic Oxidation

Coming soon...
View Factsheet

Chlorination (centralised)

As an effective yet inexpensive disinfectant, chlorination is the most commonly used disinfection method in drinking water treatment plants all over…
View Factsheet

Ozonation

Ozonation (also referred to as ozonisation) is a chemical water treatment technique based on the infusion of ozone into water. Ozone is a gas…
View Factsheet

H2O2

Hydrogen peroxide (H2O2), a colourless water-like liquid, is one of the most versatile, reliable and environmentally friendly oxidising agents. The…
View Factsheet

Desalination

The chemical process of changing seawater into potable or fresh water is called desalination. Thermal distillation and membrane processes are the two…
View Factsheet

Arsenic Removal Technologies

View Factsheet

Safe Storage

The health implications of inadequate water and sanitation services include an estimated 4 billion cases of diarrhoea and 1.9 million deaths each…
View Factsheet

Bank Filtration

Bank filtration (BF) is a drinking water pre-treatment step, where river water is induced to percolate in subsurface passage through a river bed and…
View Factsheet