Wastewater means the after use form of clean water in factories, facilities, houses, residential buildings and more…It is simply called dirty water, which can be toxic wastewater in some industries.
There are two types of wastewater. Industrial wastewater and sewage wastewater (also called domestic wastewater)
Sewage wastewater is used water in toilets, showers, sinks in residential places and facilities in cities
Industrial water is the used water turning into wastewater during process of production of any material and product
Municipal wastewater is the sum of industrial wastewater and sewage wastewater going inside city sewers which is treated in municipal wastewater treatment plants.
Sludge is the solid and semi solid materials or waste inside wastewater which is separated from wastewater by tools called screens in wastewater treatment plants