economical design of elevated solar evaporation … kandi manoharan.pdfiwma–iit-madras esep...
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Economical Design of Elevated Solar Evaporation Pan
(ESEP)By
Er. Suresh ManoharanExecutive Committee Member, IWMA
Er. Rajeswari JupalliDept. Of Civil Engg, IIT-Madras
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IWMA – IIT-Madras
Role of Solar Evaporation Pan (SEP)
Typical Process Route in Zero Liquid Discharge System
Industrial Effluent
Reverse Osmosis
Reject Management System
Solar Evaporation Pan
Pre-Treatment
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Role of Solar Evaporation Pan (SEP)
• SEP is an essential component in ZLDS.
• Though SEP can be avoided using ATFD / Jacket Reactor/ Pan Reactor, still State Pollution Control Boards insistfor a minimum capacity of SEP.
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IWMA – IIT-Madras
Evolution of SEP
Stage I
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Due to cracks in the bed, there is possibility for effluent seepinginto the ground.
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IWMA – IIT-Madras
Evolution of SEP
Stage IIUsage of HDPE Sheet
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During practical usage like scrapping of solid waste from SEP, HDPEsheets gets torn. The possibility of effluent leaking through cracksinto ground still remains.
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IWMA – IIT-Madras
Evolution of SEP
Stage IIIElevated Solar Evaporation Pan
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IWMA – IIT-Madras
Evolution of SEP
Stage IIIElevated Solar Evaporation Pan
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IWMA – IIT-Madras
Elevated Solar Evaporation Pan
Advantage:
• Any leakage in SEP due to cracks are easily identifiable.• Easy to arrest leakages compared to ground level SEP.
Disadvantage:
• Higher civil construction cost compared to traditionalSEP.• No direct Return-on-Investment (RoI).
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IWMA – IIT-Madras
Economical Design of ESEP
• Since this is a universal problem for all industries,IWMA conceived a project to solve this issue.
• In collaboration with IIT-Madras, decided to design avery economical solution for constructing ESEP.
• At the same time, confirming to civil standards.
Special thanks to: Prof. Devdas Menon,Dept. of Civil Engineering,IIT-Madras.
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IWMA – IIT-Madras
ESEP – Design Criteria
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Sl. No. Parameter Value
1. Seismic Zone of ESEP Zone III
2. Maximum Wind Velocity 150 mph
3. Grade of Concrete M40
4. Grade of Steel Fe500
5. Maximum Effluent Storage Depth 5 mm
Note: Design depth for effluent storage = 15 mm
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IWMA – IIT-Madras
ESEP – Design Configurations
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Decided to proceed with Option 2
Option 1 Option 2
Option 3 Option 4
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IWMA – IIT-Madras
ESEP – Finalized Design Configuration
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Plan view of structure
L
W
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IWMA – IIT-Madras
ESEP – Design Options
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Sl.No. Parameter Range No. ofOptions
1. Height (m) 1.2m to 2.7m(step of 0.3m)
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2. Width (m) 3.0m to 6.0m(step of 1.0m)
4
3. Length (m) 10m to 40m(step of 5m)
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4. Soil Bearing Capacity(KN/m2)
150KN/m2 to 350KN/m2(step of 50KN/m2)
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Total Options = 6 * 4 * 7 * 5 = 840 options
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IWMA – IIT-Madras
ESEP – Design Methodology
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2: Structural Design based on MATLAB R2012b Programming
A program is written in MATLAB which takescritical stress resultants and carries outstructural design, varying member sizes of 49combinations.
The output of the program is the set ofoptimum design parameters namely breadth(b), depth (d) and area of reinforcement (A) tobe used in the structural elements design.
1: Structural Analysis in SAP2000
A typical combinations of members sizes(for beam and column is proposed).Structural modeling for each combinationof the above three variables is done.
Critical stress resultants in the structuralelements is taken as output from the SAPanalysis.
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IWMA – IIT-Madras
ESEP – Design Analysis in SAP 2000
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Bending moment distribution – gravity loading
The analysis shown here is : H= 1.2, W= 3, L=10
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IWMA – IIT-Madras
ESEP – Design Analysis in SAP 2000
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The analysis shown here is : H= 1.2, W= 3, L=10
Shear force distribution – gravity loading
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IWMA – IIT-Madras
ESEP – Design Analysis in SAP 2000
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The analysis shown here is : H= 1.2, W= 3, L=10
Axial force distribution – gravity loading
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IWMA – IIT-Madras
ESEP – Design Analysis in SAP 2000
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The analysis shown here is : H= 1.2, W= 3, L=10
Deflected shape – gravity loading
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IWMA – IIT-Madras
ESEP – Design Output
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Sl.No. Parameter Unit Value
1. Effluent Storage Area Square Meter
2. Drying Capacity of ESEP Litres per Day
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IWMA – IIT-Madras
ESEP – Civil Design
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Element Size(mm)
Steel(kgs)
Concrete(m3)
Form Work (m2)
Column
Footing
Slab
Beam 1
Beam 2
Soil Excavation Volume m3
PCC Area m2
PCC Thickness 100 mm
Plastering (Outer) m2
Plastering (Inner) m2
Water Proofing Area m2
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IWMA – IIT-Madras
ESEP – Cost Calculation
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1. Steel Cost (per kg)2. Concrete Cost (per m3)3. Form Work Cost (per m2)4. Plastering Outer (per m2)5. Plastering Inner (per m2)6. Soil Excavation Cost (per m3)7. PCC Cost (per m2)8. Water Proofing (per m2)
Total cost for the ESEP construction will be provided.Also, cost per square meter of effluent holding area.
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IWMA – IIT-Madras
ESEP – Web Based Application
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Above details and calculations are available in the IWMAwebsite: www.iwma.in
1. Users choose the design options(Height, Width, Length, Soil Bearing Capacity)
2. Users choose the cost of civil components
Users are provided with all civil designs and total cost.
Note: Only members can access this section.
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IWMA – IIT-Madras 23
Thank You !
Any Questions ...
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IWMA – IIT-Madras
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IWMA – IIT-Madras
ESEP – IWMA_ESEP_D001
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Design Parameter
Height : 1.2 mWidth : 3.0 mLength : 10.0 mSoil Bearing Capacity : 150 KN/m2
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IWMA – IIT-Madras
ESEP – IWMA_ESEP_D001
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Costing Estimate
1. Steel Cost (per kg) : Rs.56/-2. Concrete Cost (per m3) : Rs.6,000/-3. Form Work Cost (per m2) : Rs.450/-4. Plastering Outer (per m2) : Rs.310/-5. Plastering Inner (per m2) : Rs.310/-6. Soil Excavation Cost (per m3) : Rs.350/-7. PCC Cost (per m2) : Rs.350/-
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IWMA – IIT-Madras
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