[Sludge Drying System For CETP Vapi]seip.urban-industrial.in/live/hrdpmp/hrdpmaster/... · Spray...
Transcript of [Sludge Drying System For CETP Vapi]seip.urban-industrial.in/live/hrdpmp/hrdpmaster/... · Spray...
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[Sludge Drying System For CETP Vapi]
PRESENTED BY
[Sachin Ramesh Dhake,DGM, CETP( Vapi ) ]
1 5 . 0 2 . 2 0 1 9 , N E W D E L H I
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Capacity :-
Activated Sludge Process (CETP) : 55 MLD (January-1997).
CMEE : 200 KLD (April – 2015).
Spray Dryer : 4 KL/hr (March – 2018).
CETP was designed and built by the National EnvironmentalEngineering and Research Institute (NEERI) in 1997.
Total Area of CETP is 72 Acres in which approx. 45% area coveredwith greenbelt. Total 521 industries are the member of CETP.
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2NATIONAL CONFERENCE ON
SUSTAINABLE AND ENVIRONMENT-FRIENDLY INDUSTRIAL PRODUCTION, NEW DELHI
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CETP-PROCESS FLOW CHART
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PRIMARY
CLARIFIERS
S.D.B Filtrate Pump
MAIN INLET
CHAMBER
LIME DOSING
COARSE SCREEN
CHAMBER
AUTO SCREEN
CHAMBER
GRIT CHAMBER
EQULISATION TANKS
FLASH MIXER &
FLOCCULATOR
PRIMARY CLARIFIERS
CMEE (200 KLD)
CONDENSATE
CONCENTRATE
AERATION TANKS
SECONDRY CLARIFIERS
FINAL OUTLET
SLUDGE THICNERS
DECANTERS
TIDAL ZONE OF RIVER
DAMAN GANGA
S.D.B Filtrate Pump
Wastewater from GIDC Estate
through under ground pipe line
Sludge Over Flow
Centrate
Cake
WAS
RAS
PROCESS FLOW DIAGRAM OF CETP
CMEE Effluent
storage tank
SPRAY DRYER
(4000 Kg/hr)
Powder/Salt
(to TSDF )
Bagging
Leachate
Sludge to
TSDF for
Land filling
Highly
Concentrated
Waste water
through Tankers
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CETP Sludge Generation
In let Suspended Solids :- 400 PPM
Out Let Suspended Solids :- 100 PPM
Quantity Flow :- 55 MLD
Primary SS on Dry basis :- 22 MT
Secondary SS on Dry Basis :- 11 MT
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Decanter Sludge Drying Trials:
Trial: To study the effect of sun drying on moisture contain ofDecanted Sludge. ( Project Initiative by VGEL Technical team.)
Protocol:
Decanted sludge from decanter has been sprayed in 1 – 1.5 ftlayer on PCC surface of Interim sludge storage – 1 on 09/11/2016.
Half of the sludge has been covered with transparent plastic shedwith exhaust fan facility on 13/11/2016.
The Initial moisture/Solid contain in sludge was analyzed.
Alternate day sludge layers are being manually cultivated tochange the drying surface.
Check moisture/solid contain of the sludge every four days.5CETP,VAPI3/4/2019
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RESULTS
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SS To Moisture Ratio in sludge
Location Ratio Quantity of Sludge In MT per Day
Primary sludge after Decantation
22:78 100
Secondary sludge after Decantation
18 : 82 61
Sludge after bagging stacking & leaching ( Primary +Secondary)
45:55 73
After Sun drying in 20-30 Day
80:20 33
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Monthly Humidity % of VapiSr. No Month Humidity (%) Sun Shine Hr Temp In °C
01 January 69 270 29
02 February 69 258 29
03 March 69 274 31
04 April 69 274 32
05 May 70 296 34
06 June 80 149 32
07 July 86 73 30
08 August 86 76 29
09 September 83 165 30
10 October 78 240 33
11 November 71 246 33
12 December 69 253 323/4/2019 CETP,VAPI 9
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Phase- I Project Construction of CC platform.
Area :- 9000 SQM.
Estimate :- 2.5 Cr
Status :- Completed.
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Lay out Drawing
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Existing Sludge Drying Bed
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Pay Back Calculation Capital Cost :- 230 las
Saving per month :- 12.25 Lacs
Payback period :- 18 month
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Conclusion Total Handling Of sludge per Day :- 130 MT -150MT
Area required with RCC platform :- 9000 SQM
Solid : Moisture Ratio After Sun Drying :- 80:20
Advantage :-
Transportation & Handling cost will be reduced.
Increasing life of TSDF site.
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Proposed project for sludge drying system.
Phase :-II
Construction of Green house shed with Auto turning device.
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Estimate for Phase project –II
Sr.
No.
Particular Cost In Cr.
01 Green house construction. 09 Nos. with
poly carbonate sheet.
9
02 Turning device & Equipment 4.5
03 Mechanize Feeding system 1.5
04 Floor heating system by solar energy 1.5
05 Storage shed of 1800 SQM 2.5
06 PLC & controlling system, exhaust &
Turning device
4.5
Total Estimated Cost Excluding taxes 23.5
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Schematic diagram of Solar Drying System
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Spin Flash Dryer
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Spin Flash Dryer Pilot Trial. Inlet Solid % = 20
Out let Solid % = 80
Drying time ( Contact Time ) = 1.5 hr.
Source of energy
Present by steam with boiler Exhaust.
Proposed energy = hot air by CETP sludge
Cost Evaluation is Under progress.
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Summary
Primary sludge having leaching properties up to 20 % solids concentration.
Secondary sludge having properties up to 18 % solid concentration.
Sun drying system is techno commercially feasible for CETP primary & Secondary sludge.
Suggested to CETP’s for effective sludge drying.
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Contact Details
Mobile No :- 9714004446
Email ID :- [email protected]
Web site :-htpp// www.vgelvapi.com
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