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the treatment system. Greater the energy, lesser the time and space required for
bringing the concentration of pollutants to desired level.
The water and wastewater treatment methods mainly contain unit operations and
unit processes. Methods that bring physical changes such as sedimentation, floatation, crystallization, and filtration are called unit operations. Unit processes involve
removal of pollutants by chemical reactions and/or biological processes.
Fig. 5.2 Stagnation of water or lower velocity in nature will settle solid particles
Fig. 5.3 Water-tolerant crops that flourish forming wetland due to presence of nutrient will reduce
concentration of nutrients, which have detrimental effect on other organisms
5 Water and Wastewater Treatment
the treatment system. Greater the energy, lesser the time and space required for
bringing the concentration of pollutants to desired level.
The water and wastewater treatment methods mainly contain unit operations and
unit processes. Methods that bring physical changes such as sedimentation, floatation, crystallization, and filtration are called unit operations. Unit processes involve
removal of pollutants by chemical reactions and/or biological processes.
Fig. 5.2 Stagnation of water or lower velocity in nature will settle solid particles
Fig. 5.3 Water-tolerant crops that flourish forming wetland due to presence of nutrient will reduce
concentration of nutrients, which have detrimental effect on other organisms
5 Water and Wastewater Treatment