Pengelolaan Air Limbah :

Water Waste Management / Pengelolaan Air Limbah :

Water waste management is the field of handling waste water to make it suitable to either be recycled into a water system or to be disposed of in an environmentally-conscious manner. This is one of the larger problems facing most major cities in the modern world, with overflow causing severe pollution problems and increasing population densities stretching existing infrastructure to the breaking point. Both mechanical and biological processes are used to manage waste water to get rid of undesirable particulate matter and to eliminate any potentially harmful pathogens.
One of the major fields in water waste management is that of sewage treatment. This covers domestic sewage, commercial runoff, environmental runoff, and more. Households produce sewage as waste from their toilets, showers, sinks, and baths, which is generally either pumped into a leech field on the premises, or else sent into a central sewage system. Industrial wastewater can be particularly dangerous, often with harmful pollutants added to the water and introduced into the sewage system. In some regions, this wastewater is specially regulated, and may require a special facility to process.

(http://www.wisegeek.org/what-is-water-waste-management.htm)