Question

what we mean by a composite sewage flow ?

Answer 1

Hope it helps.

The term "sewage flow" generally used for the wasterwater flow generated by communitiy. Waterwater derived from dwelling, sanitary waste which may includes floating debris( such as woods and rags etc), pathogens (desease causing micro- organisum), refuge( all waste generated in form of solid liquid and semi solid), sullage (generated from kitchen, bathroom and hosuehold utilities) etc.

  We take sewages in consideration which are domestic wastewater or municipa wastewater. Now "composite sewage flow" is wastewater flow which may consist of domestic, industrial waste and strom water.

Industrial waste carries toxic gases and substances which get mix with sewage and in similar way run off water i.e. strom water may carry surrounding's gas and acid rain.