Seperate System Vs Combined System
1) In seperate system rainwater is kept seperate form sewage while in combined system rain and sewage passes from a single set of pipe.
2) The storm/natural water is not polluted in seperate system while it gets polluted in combined system.
3) The storm water can be discharged into river without treatment while it should be treated before mixing into the river.
4) The sewers are small in size while sewers are large in diameters in combined system.
5) The cleaning of sewers is hard in separete system due to small size while it is easy to clean the sewares due to large diameters.
6) The maintainance cost is high in seperate system while it is reasonable in combined system.
7) Loads on treatment untis becomes less in seperate system while the load on treatment units are high in combined system.
8) Seperate system requires two sets of sewers ends which might be costly while in combined system one set of sewers is required which is economical.
9) *** Self cleaning velocity is not easily achieved in seperate system while it is achieved easily in combined system.
10) Over flow problem in seperate system is reduced while in monsoon season the combined sewers may overflow and puts danger to the public health.
11) ***Seperate system is economical if pumping is required to lift the sewage while it is uneconomical if pumping is required to lift the sewage.
1) In seperate system rainwater is kept seperate form sewage while in combined system rain and sewage passes from a single set of pipe.
2) The storm/natural water is not polluted in seperate system while it gets polluted in combined system.
3) The storm water can be discharged into river without treatment while it should be treated before mixing into the river.
4) The sewers are small in size while sewers are large in diameters in combined system.
5) The cleaning of sewers is hard in separete system due to small size while it is easy to clean the sewares due to large diameters.
6) The maintainance cost is high in seperate system while it is reasonable in combined system.
7) Loads on treatment untis becomes less in seperate system while the load on treatment units are high in combined system.
8) Seperate system requires two sets of sewers ends which might be costly while in combined system one set of sewers is required which is economical.
9) *** Self cleaning velocity is not easily achieved in seperate system while it is achieved easily in combined system.
10) Over flow problem in seperate system is reduced while in monsoon season the combined sewers may overflow and puts danger to the public health.
11) ***Seperate system is economical if pumping is required to lift the sewage while it is uneconomical if pumping is required to lift the sewage.
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