0
07/29/13 1
Sewage Treatment and DisposalSewage Treatment and Disposal
Economical Way-outEconomical Way-out
Dinkar Saxena &...
07/29/13 2
AWWTAWWT
New Action PlanNew Action Plan ….….
 Development of self sustainable wastewater
treatment & disposal ...
07/29/13 3
WaterWater
It's vital for all of
us. We depend on its
good quality-and
quantity-for drinking,
recreation, use i...
07/29/13 4
Ground water is for ever...!Ground water is for ever...!
 A beautiful Day
Dream…!
 Ground Realty is …
Ground ...
07/29/13 5
An Alarming NegativeAn Alarming Negative TrendTrend
In 1985 Water Table in Kalma Nagar
Area was 50 fts
In 200...
07/29/13 6
Yes Need of Hour is…Yes Need of Hour is…
WATERSHED
MANAGEMENT
07/29/13 7
Action taken for…Action taken for…
• Minimization of wastewater by training and awareness.
• Zero discharge sew...
07/29/13 8
METHODOLOGY FOR TREATMENTMETHODOLOGY FOR TREATMENT
•Separation of rainwater runoff from sewage gray water.
•Ana...
07/29/13 9
FAMILIES + CAFETERIA WASTE
Grey water =
Bathroom
+kitchen
+washing etc
Night Soil
Transportation to treatment
p...
07/29/13 10
Paved and un paved area
Collection drain
Grit chamber Trash racks
Cropland
Schematic diagram of Rain Water Tre...
07/29/13 11
Generation
points
of sewage
Collection of
sewage
Up flow
anaerobic
digester
Aeration tank
/ trickling filter
T...
07/29/13 12
Storage for treated
water
‘O’ level
Generation of wastewater
BOD 300 mgl, 50 Kld
Collection &
settling pit 5 K...
07/29/13 13
Landscaping as tertiary treatmentLandscaping as tertiary treatment
07/29/13 14
Cost of TreatmentCost of Treatment
 Anaerobic Process shell out energy in terms of
Methane.
 Secondary or po...
07/29/13 15
Anaerobic
Waste Water Treatment
(AWWT)
General Introduction
07/29/13 16
Sustainable Environmental Concepts
• Appropriate low-cost technologies
• Integrated biological methods
• Reuse...
07/29/13 17
Sustainable Environmental Protection
• Prevention of waste production
• No dilution of high strength wastes
• ...
07/29/13 18
Resource Conservation
• Wastewater treatment for water
recovery
• Valorization of (semi) solid residues
– prod...
07/29/13 19
Criteria for WWT selection
• Satisfactory treatment efficiency towards:
COD/BOD,suspended solids, N, P, etc.
•...
07/29/13 20
Technologies
• Bio-technological processes
– Anaerobic treatment, core
technology
– (Micro) aerobic post treat...
07/29/13 21
WHY ANAEROBIC TREATMENT ?
AEROBIC process has Heat loss
Sludge, 30-60 kg
Influent 100 kg COD + Aeration +(100 ...
07/29/13 22
Benefits of Anaerobic (pre -)treatment
• Low production of stabilised (!) sludge
• Very low nutrient requireme...
07/29/13 23
• Anaerobic organisms are quite susceptible for a large
number of compounds
• AWWT in principle is a pre-treat...
07/29/13 24
Few Completed Projects…Few Completed Projects…
 District Jail Agra., 1000 + inmates
 Vimal Apartments., 54 F...
07/29/13 25
Bhawna EstateBhawna Estate
KATCHA RAS TA
S.T.P.
10'[3.05]
5' [1.52]
07/29/13 26
A Live experience….A Live experience….
Plant at district Jail Agra
07/29/13 27
A talk with Superintendent Jail Agra…A talk with Superintendent Jail Agra…
Mr. S.P. Yadav Crops at Jail Compou...
07/29/13 28
Team/ResourcesTeam/Resources
Dinkar Saxena,
M. Sc., M.I.E., M.I.P.H.E.,P.G.D.M., C. Eng., Chartered Engineer,
...
07/29/13 29
Thanks for …
…kind attention.
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Transcript of "Sewage treatment disposal.7423610"

  1. 1. 07/29/13 1 Sewage Treatment and DisposalSewage Treatment and Disposal Economical Way-outEconomical Way-out Dinkar Saxena & Rajeev Parwar ““AWWT”AWWT” New Action PlanNew Action Plan
  2. 2. 07/29/13 2 AWWTAWWT New Action PlanNew Action Plan ….….  Development of self sustainable wastewater treatment & disposal system for remote & unsewered locations for small habitats.  Must comply all norms of E P Act yet energy efficient economical solution to wastewater discharge system.  When ground water levels are decreasing rapidly why to waste any drop of WATER – need of hour. …A step For Sustainable Solution
  3. 3. 07/29/13 3 WaterWater It's vital for all of us. We depend on its good quality-and quantity-for drinking, recreation, use in industry and growing crops. It also is vital to sustaining the natural systems on and under the earth's surface ….
  4. 4. 07/29/13 4 Ground water is for ever...!Ground water is for ever...!  A beautiful Day Dream…!  Ground Realty is … Ground water is receding By every passing year.  Declining Rate of Ground Water in some Parts of Agra as monitored by Piezometer
  5. 5. 07/29/13 5 An Alarming NegativeAn Alarming Negative TrendTrend In 1985 Water Table in Kalma Nagar Area was 50 fts In 2004 water Table in same area is Nearly 225 ft. A whooping decline on Average of 9 Ft. per year.
  6. 6. 07/29/13 6 Yes Need of Hour is…Yes Need of Hour is… WATERSHED MANAGEMENT
  7. 7. 07/29/13 7 Action taken for…Action taken for… • Minimization of wastewater by training and awareness. • Zero discharge sewage treatment systems. • Water recycling. • Zero discharge Industries. • Drip irrigation. • Prevention of over drafting the ground water • Sustain development and preservation of Natural Water Resources • Increase in catchments area as much as possible for Water Harvesting • Flood Management ……..are Components of Watershed Management.
  8. 8. 07/29/13 8 METHODOLOGY FOR TREATMENTMETHODOLOGY FOR TREATMENT •Separation of rainwater runoff from sewage gray water. •Anaerobic digester based sewage treatment plant for wastewater. •Disposal of treated wastewater on cropland for irrigation. •Draining of rainwater runoff in to low-lying cropland fields. •Plugging all points of water escape on outer periphery of jail, by contour bunds.. Making an exit plan for draining excessive rainfall, to nearby Municipal drain.
  9. 9. 07/29/13 9 FAMILIES + CAFETERIA WASTE Grey water = Bathroom +kitchen +washing etc Night Soil Transportation to treatment plant (sewage lines + drains) Equalization tank with HRT of 6Hrs. Bar screensGrit chamber grit Floating material UASB Reactor 39 ft hydraulic depth Polishing pond 12 hrs HRT Sub surface soaking trenches with sand piling if required and Evapotranspiration system rainwater RWH
  10. 10. 07/29/13 10 Paved and un paved area Collection drain Grit chamber Trash racks Cropland Schematic diagram of Rain Water Treatment and disposal (Harvesting process).
  11. 11. 07/29/13 11 Generation points of sewage Collection of sewage Up flow anaerobic digester Aeration tank / trickling filter Treated water to cropland Flow sheet of wastewater treatment and disposal process
  12. 12. 07/29/13 12 Storage for treated water ‘O’ level Generation of wastewater BOD 300 mgl, 50 Kld Collection & settling pit 5 Kl Attached growth media Attached growth media Hrt 5 hrs BOD removal 70% +3 3 ½’ BOD removal 95 ~ 99 % Pump 1.5 KL / Hr SCHEMATIC OF ENERGY EFFICIENT Sewage treatment system (STP)ATTACHED GROWTH ANAEROBIC DIGESTER - 3INCHES ATTACHED GROWTH BIO TOWER
  13. 13. 07/29/13 13 Landscaping as tertiary treatmentLandscaping as tertiary treatment
  14. 14. 07/29/13 14 Cost of TreatmentCost of Treatment  Anaerobic Process shell out energy in terms of Methane.  Secondary or polishing Stage uses natural oxidation which brings out cost of chemical energy requirement.  Average of Construction for Eco systems are nearly Rs. 5.00 per Lt. Per day.  Running Cost is as low as Rs. 0.10 per capita load. FOR MORE INFO... Manual on sewerage and sewage treatment ( Second Edition) ( CPHEEO) Ministry of Urban Development, The Govt. Of India.
  15. 15. 07/29/13 15 Anaerobic Waste Water Treatment (AWWT) General Introduction
  16. 16. 07/29/13 16 Sustainable Environmental Concepts • Appropriate low-cost technologies • Integrated biological methods • Reuse of valuable compounds • Stimulation of urban agriculture • Development towards ‘zero emission’ production Require: Bio-methanation of waste (waters)
  17. 17. 07/29/13 17 Sustainable Environmental Protection • Prevention of waste production • No dilution of high strength wastes • Treatment at the site • Low or no usage of chemicals & fossil fuels for treatment • Low treatment costs (land, capital & operational) • High efficiency • Applicable at any scale • Robust and plain technologies • Acceptable for local population / industries
  18. 18. 07/29/13 18 Resource Conservation • Wastewater treatment for water recovery • Valorization of (semi) solid residues – production of soil conditioners • Bio-methanation of organic wastes • Recovery of nutrients and elements from waste streams: N, P, S, heavy metals
  19. 19. 07/29/13 19 Criteria for WWT selection • Satisfactory treatment efficiency towards: COD/BOD,suspended solids, N, P, etc. • Robust technology: high stability towards power cut, peak loads, toxicants, etc. • Flexible with respect to future amendments (extensions, improvement) • Simple in operation maintenance and control • Limited number of treatment steps • Absence of disposal problems (e.g. sludge) • No malodour nuisance • Availability of local experience • Designed for (by) product recovery
  20. 20. 07/29/13 20 Technologies • Bio-technological processes – Anaerobic treatment, core technology – (Micro) aerobic post treatment • Complementary physico-chemical processes, If necessary
  21. 21. 07/29/13 21 WHY ANAEROBIC TREATMENT ? AEROBIC process has Heat loss Sludge, 30-60 kg Influent 100 kg COD + Aeration +(100 kWh) =Effluent, 2-10 kg COD ANAEROBIC Sludge, 5 kg Influent 100 kg COD= Effluent, 10-20 kg COD + Biogas 35 m3 (285 kWh) Net Energy gain
  22. 22. 07/29/13 22 Benefits of Anaerobic (pre -)treatment • Low production of stabilised (!) sludge • Very low nutrient requirements • Little if any energy requirement • Production of biogas • Reduction of green house gas emissions • Very high loading rates (up to 35 kg COD.m-3.day -1) • Plain technology • Relatively simple in operation and maintenance • Anaerobic sludge can be stored unfed ®campaign industries • Start up with granular sludge in 1 week If Used as Pre Treatment…
  23. 23. 07/29/13 23 • Anaerobic organisms are quite susceptible for a large number of compounds • AWWT in principle is a pre-treatment to reduce the load on Aerobic treatment • Sometimes malodor nuisance may occur • Sometimes little experience available in operation and design ““Drawbacks” of Anaerobic treatmentDrawbacks” of Anaerobic treatment
  24. 24. 07/29/13 24 Few Completed Projects…Few Completed Projects…  District Jail Agra., 1000 + inmates  Vimal Apartments., 54 Flats  Vimal Vatika 230 Residential houses  Bhawna Estate 75 Families  Vinayak Vihar 82 Residential Houses  Dawar Footwear Company 650 Employee  Virola International 1400 Users. Project Under construction…  TDI City. Agra 1150 Houses  TDI Mall Agra 1500 Footfall  Pushpanjali Baikunth, 125 Acres Layout  Pushpanjali Orchid, Agra. 127 Acers  P P Town 350 Housed And cottages  Etc….
  25. 25. 07/29/13 25 Bhawna EstateBhawna Estate KATCHA RAS TA S.T.P. 10'[3.05] 5' [1.52]
  26. 26. 07/29/13 26 A Live experience….A Live experience…. Plant at district Jail Agra
  27. 27. 07/29/13 27 A talk with Superintendent Jail Agra…A talk with Superintendent Jail Agra… Mr. S.P. Yadav Crops at Jail Compound
  28. 28. 07/29/13 28 Team/ResourcesTeam/Resources Dinkar Saxena, M. Sc., M.I.E., M.I.P.H.E.,P.G.D.M., C. Eng., Chartered Engineer, accredited Lead Auditor, SAI (USA), Environment Auditor (EIMA, U.K.) Rajeev Parwar M.E. ( Construction Technology & Management) , M.I.E., M.I.P.H.E.,F.I.V., C. Eng., Chartered Engineer Support staff Mohd. Tarique. Diploma in Architecture. Skilled Supervisors Civil Construction 2 Electrical 1 Plumbing 3 Equipment Complete Tools for on the spot monitoring Environment Parameter. Support & Outside Services Long term Contract With S.G.S. Ltd., Gurgoan, Haryana, For Environment Impact Assessment.
  29. 29. 07/29/13 29 Thanks for … …kind attention.
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