Sunday, 8 July 2018

Partially Separate Sewer System And Their Advantages & Disadvantages

In this system two sets of sewers are laid. A portion of storm water is allowed to enter in the sewers carrying sewage and the remaining storm water flows through separate set of sewer. Thus, the load on the treatment plant is controlled and kept within the capacity of the treatment plant.

Advantages of Partially Separate System 


Following are the advantages of partially separate system:
1) It combines the advantages of both the combined system and separate system .
2) The entry of storm water prevents the silting of sewer .
3) The sewers are of reasonable size .
4) The problem of disposing storm water from houses is simplified .

Disadvantages of Partially Separate System


Following are the disadvantages of partially separate system:
1) The velocity of flow is low in dry weather .

2) There are possibilities of over flow .
3) The entry of storm water in sewer may increase the load on pumping and treatment unit .
4) If the diversion of storm water is not done at proper time, then it may create unnecessary troubles.