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Sewerage Treatment Plant (STP)
Upflow Anaerobic Flush Blanket Model
(UAFB )
Dr Shyam Ashtekar
SMBT Medical College Nashik
...
The STP Model
A B
C
A: screening and grit removal, B: primary & secondary sedimentation,
C: sludge separation and water tr...
The STP plant
• The STP aims to reduce
BOD from 300+ to <30
before water is
discharged into river or
farms
• The sludge is...
Screening for solid waste
• Sewage is 95%
water, with
human and
other waste
including
plastic bags,
sanitary pads,
grit et...
Solid waste separated
• This is
what
should not
be thrown
into toilets
and
sewers..but
we do!
2/16/2016 5
Grit Chamber
• Removal
of sand
grit etc.
2/16/2016 6
Primary Sedimentation (8hrs)
• To settle
sludge
(organic
solid waste)
• The blue
pipes collect
methane gas
going to
power
...
Aeration to help bacterial oxidation of
sludge
• The
aerobic
bacteria
need
air/O2 to
oxidize the
sludge
2/16/2016 8
Secondary Sedimentation (6hrs)
• This finally
separates
sludge and
water and
bacterial
digestion is
still
happening
• Slud...
Sludge drying beds
• Sludge
makes a
good
manure
for
agriculture
2/16/2016 10
Liquid chlorine for disinfecting water
before discharge
2/16/2016 11
2/16/2016 12
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Sewerage Treatment Plant (stp) 2016

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This is a modern STP plant at Nashik Maharashtra. This introductory presentation is meant for medical and other students, organised by PSM/ComMed depts.

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Sewerage Treatment Plant (stp) 2016

  1. 1. Sewerage Treatment Plant (STP) Upflow Anaerobic Flush Blanket Model (UAFB ) Dr Shyam Ashtekar SMBT Medical College Nashik Jan 2016 2/16/2016 1
  2. 2. The STP Model A B C A: screening and grit removal, B: primary & secondary sedimentation, C: sludge separation and water treatment 2/16/2016 2
  3. 3. The STP plant • The STP aims to reduce BOD from 300+ to <30 before water is discharged into river or farms • The sludge is oxidized and dried to make manure. • Methane generated in digestion runs the power plant for this STP. 2/16/2016 3
  4. 4. Screening for solid waste • Sewage is 95% water, with human and other waste including plastic bags, sanitary pads, grit etc • The first job is to separate the solid waste by screening 2/16/2016 4
  5. 5. Solid waste separated • This is what should not be thrown into toilets and sewers..but we do! 2/16/2016 5
  6. 6. Grit Chamber • Removal of sand grit etc. 2/16/2016 6
  7. 7. Primary Sedimentation (8hrs) • To settle sludge (organic solid waste) • The blue pipes collect methane gas going to power generation 2/16/2016 7
  8. 8. Aeration to help bacterial oxidation of sludge • The aerobic bacteria need air/O2 to oxidize the sludge 2/16/2016 8
  9. 9. Secondary Sedimentation (6hrs) • This finally separates sludge and water and bacterial digestion is still happening • Sludge is taken off to sludge drying beds from below. 2/16/2016 9
  10. 10. Sludge drying beds • Sludge makes a good manure for agriculture 2/16/2016 10
  11. 11. Liquid chlorine for disinfecting water before discharge 2/16/2016 11
  12. 12. 2/16/2016 12
  • DHARANIDHARSAHOO

    Nov. 18, 2019
  • HarshBittu

    Jan. 5, 2019
  • shibinM1

    Dec. 8, 2017
  • AmritMinhas4

    Oct. 16, 2017
  • sheebaapoorva

    Jan. 2, 2017

This is a modern STP plant at Nashik Maharashtra. This introductory presentation is meant for medical and other students, organised by PSM/ComMed depts.

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