https://padlet.com/alianahmudin/u4eynfsq9t0zev2l By nurul alia bt nahmudin en-us 2020-08-18 04:06:10 UTC 2020-10-27 05:08:47 UTC hello@padlet.com alianahmudin https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864415729 Collection of Sewage :
●A system of sewer pipes (sewers) collects
sewage and takes it for treatment or disposal.
●sewerage system has not been
provided, sewage may be collected from
homes by pipes into septic tanks or cesspits,
where it may be treated or collected
in vehicles and taken for treatment or disposal.

]]> 2020-10-27 04:56:14 UTC https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864415729 alianahmudin https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864421598  Sewerage system :
●Sewerage system, network of pipes, pumps,
and force mains for the collection of
wastewater, or sewage, from a community.
●domestic and industrial sewers
and storm sewers.
●sewerage systems types:-
• 1. Separate System
• 2. Partially Separated System
• 3. Combined System

]]> 2020-10-27 04:59:31 UTC https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864421598 alianahmudin https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864429770 1. Separate Sewerage System :
 ●The separated system is suitable when separate 
outlet for storm water is available and the 
topography is such that storm water can be 
disposed of in natural 
●Advantages of Separate System:
• The load on treatment plant is less as only
sewage is carried to the plant.
• The size of sewer is small, thus economical
• When pumping is required, the system proves
to be economical.
• Natural/storm water is not unnecessarily
polluted by sewage.
●Disadvantages of Separate System:
• Cleaning of sewer is difficult due to their small
size.
• The self cleansing velocity is not easily obtained.
• The storm sewers come in operation in rainy
season only. They may be chocked in dry season
by garbage.
• Maintenance cost is high.
• Sewage sewers are provided below storm sewer
which causes greater depth and pumping at waste
water treatment plant (WWTP).

]]> 2020-10-27 05:04:20 UTC https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864429770 alianahmudin https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864433559 2. Partially Separate Sewerage System
●This system is the compromise between
separate and combine system taking the
advantages of both systems.
●Advantages of Partially Separate 
Sewerage System
• It combines the good features of both systems.
• The silting is avoided due to entry of storm
water.
• The storm water from houses is easily
disposed off.
• The sewers are of reasonable size.
●Disadvantages of Partially Separate 
Sewerage System
• A very small fraction of bad features of
combined system are there in partially
separated system]]> 2020-10-27 05:06:30 UTC https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864433559 alianahmudin https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864436736 3. Combined Sewerage System
● In this system the sewage and storm water are
carried combine in only one set of sewers to
the waste water treatment Plant (WWTP)
before disposal.
●Advantages of Combined Sewerage 
System:
• Easy cleaning because of larger diameter.
• Reasonable maintenance cost.
• Strength of sewage is reduced due to dilution
of sewage by storm water.
• This system requires only one set of sewer
making it economical.
●Disadvantages of Combined 
Sewerage System
• In storm season sewer may overflow and the
sewer may damage causing serious health risks
• The combine sewer gets silted and becomes foul
in dry days
• Load on treatment plant is more because storm
water is also carried there
• The storm water gets polluted unnecessarily
• The system becomes uneconomical when
pumping is needed]]> 2020-10-27 05:08:25 UTC https://padlet.com/alianahmudin/u4eynfsq9t0zev2l/wish/864436736