Biological wastewater treatment

Biological wastewater treatment is a group of methods to free water from biological and chemical pollution.

The active littoral zone

The littoral zone of a lake is the shallow part, where water plants and a great variety of small animals and microbes are living. It is biological active, that is, it has a cleaning effect upon the water. Even pharmaceutic substances are digested. However, the cleaning capacity is limited.

Such a lake can be an important part of the waste water treatment in a Martian settlement.

A perfect reply! Thanks for taking the trboule.