In addition to treatment of routine domestic sewage from airport zone, Capital airport sewage treatment Plant still treats airline fecal sewage.

The vacuum sewage discharge system was utilized to collect fecal sewage in the design of toilet in the spot Viewing Fish at Green Pool of Tingtao Scenic Area of East Lake.

Regarding to the high concentrations of nitrogen, phosphorus and organic matters in fecal sewage, the productive research on treatment of fecal sewage by biological/chemical process was performed.