Here,
we will consider the reasons why such treatment is needed, the nature
of the materials which are removed from wastewaters and explore
the processes that accomplish that removal. We will consider wastewater
treatment in cities, in small communities, at individual homes and
even aboard the international space station.
Domestic and industrial wastes are treated before being discharged
to rivers and lakes to guarantee safe recreation and to protect
the wildlife that call those environments home. While modern
technology offers remarkable capabilities to accomplish these goals,
the introduction of new and different pollutants and the cost of
treating to required levels is a challenge for the wastewater treatment
industry.
