Technological process for building local water ecosystem

The invention relates to the technical field of sewage disposal, and particularly relates to a technological process for building a local water ecosystem, wherein the technological process is applied to an urban aqueduct or a polluted water region of a tributary channel. The technological process investigates pollutant sources relative to water ecology at first, distinguishes the main pollutant sources, and achieves the precondition of sewage interception. After the emissions of industrial pollution such as chemical pollution, nuclear pollution and the like are solved, a pre-reservoir water area is arranged to convert and absorb befouled water, the destructiveness of befouled water on the water ecology is reduced, and water that is processed and then reaches safety standards is discharged to rivers and lakes. In four stages of beginning, deploitation, broadening and maintenance for water ecological restoration, corresponding measures are taken respectively according to situations such as water quality, water