Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water. The goal of this process is to produce water fit for a specific purpose. Most water is disinfected for human consumption (drinking water) but water purification may also be designed for a variety of other purposes, including meeting the requirements of medical, pharmacological, chemical and industrial applications.
Waste Water Treatment Plants
In general the methods used include physical processes such as filtration, sedimentation, and distillation, biological processes such as slow sand filters or biologically active carbon, chemical processes such as flocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light.
The purification process of water may reduce the concentration of particulate matter including suspended particles, parasites, bacteria, algae, viruses, fungi; and a range of dissolved and particulate material derived from the surfaces that water may have made contact with after falling as rain.
The standards for drinking water quality are typically set by governments or by international standards. These standards will typically set minimum and maximum concentrations of contaminants for the use that is to be made of the water.
It is not possible to tell whether water is of an appropriate quality by visual examination. Simple procedures such as boiling or the use of a household activated carbon filter are not sufficient for treating all the possible contaminants that may be present in water from an unknown source. Even natural spring water – considered safe for all practical purposes in the 19th century – must now be tested before determining what kind of treatment, if any, is needed. Chemical and microbiological analysis, while expensive, are the only way to obtain the information necessary for deciding on the appropriate method of purification.
- Aerators, Flash Mixers, Flocculators Clarifier
- Parallel Plate separator, Tube Settler, HRSCC
- Clariflocculator Sand Filtration
- Dual Media Filters
- Activated Carbon filters, Ultra Filtration Mill Scale Filtration
- Side Stream Filter, Softener
- Chemical Dosing System
- DM plant
- RO unit
- Ultra Filtration
- Condensate Polishing
- Backwash/DM Water treatment
- Cooling Tower/Boiler Blow down
- Moving Media Bioreactor, MBR systems, Sewage Recycle Plant
- API/Tilted Plate Interceptor (TPI)