This document discusses CAMUS-SBT technology for wastewater recycling. CAMUS-SBT uses soil-based treatment to treat sewage and industrial wastewater with minimal mechanical equipment. It has higher removal rates of pollutants like BOD, COD, and fecal coliform than conventional wastewater treatment technologies. CAMUS-SBT plants have been installed across India for municipal, industrial, and other applications ranging in size from 3 KLD to 3 MLD.

1. CAMUS-SBT for Waste Water Recycling
Sharan K K
Vision Earthcare (SINE, IIT Bombay)
M.Tech: IIT Bombay (Chem. Engg.)
www.visionearthcare.com
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2. •Movie: India Innovates by GoI
•Water Scenario
•CAMUS-SBT Technology
•Quality Parameters for Water Reuse
•Installations of CAMUS-SBT?
•Q&A
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Overview of Presentation

3. Govt of India: India Innovates
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4. Water Scenario
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Within a decade India will be highly stressed for water
Entire India and desert regions of West Asia & Africa will be on the same boat. By 2025,
India will have less than 1000 m3/capita year – water scarcity
Source : WBCSD report – Water Facts & Trends, 2005

5. CAMUS-SBT Applications
•Sewage Recycling
–Black from Toilets
–Grey from Washing Activities
•Industrial Waste Water Treatment
–Agro Industries:
–Distilleries
–Steel
–Pharmaceuticals
•Swimming Water Treatment
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6. Conventional Technology
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Conventional sewage treatment plants have multiple mechanical equipment
that are critical to proper functioning. Failure of one component has cascading
effects on the process

7. CAMUS-SBT vs Conventional
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TS in large municipal units. Smaller systems the RWT is suitably redesigned.
CAMUS-SBT for Recycling Water
Conventional System for Disposal

8. CAMUS-SBT
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Chandrashekar S, Shankar HS: Bio-Remediation of Waste Water Streams using SBT: AICHE 2009
CAMUS-SBT is designed with minimal mechanical equipment

9. CSBT Process Chemistry
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10. Technology Comparison
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11. CAMUS-SBT vs Conventional
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#
Item/Parameter
Unit
ASP
MBBR
SBR
MBR
CAMUS-SBT
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Overall HRT
Hrs.
12 to 14
8 to 12
14 to 16
12 to 14
3 to4
2
BOD Removal
%
85-95
85-95
90-95
95-98
95-98
3
COD Removal
%
80-90
80-90
88-96
95-99
95-99
4
TSS Removal
%
85-90
85-95
90-96
98-99
98-99
5
Fecal Coliform Removal
log Unit
upto3<4
upto2<4
upto2<4
upto6<7
upto7<8

12. CAMUS-SBT Features
CAMUS SBT Features
 No external aeration
Low power consumption
No bio-sludge formation
Efficient removal of pollution
Garden like ambience
One time media installation
Long life
Unskilled personnel sufficient to operation
Designs for below roads, in traffic islands, boundary wall
Works even in Fluctuating power and waste water load.
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13. Prefab Unit 3 KLD
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14. Factory 10 KLD
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15. Process Reuse 35 KLD
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16. Airport 120 KLD
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17. Housing Colony 650 KLD
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18. Golf Course 1MLD
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19. BMC 3MLD Plant
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20. Typical Treated Results
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21. BMC Worli Results
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22. CAMUS SBT plant details
•Project: Herohalli Lake, BBMP
•Design Capacity -1.4 MLD
•Area Used - 1650 Sq.M.
•Project Cost - INR. 3 crores
•Power Consumption 125 Units /day.
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23. BBMP 1.4 MLD
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24. BBMP Test Results
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25. Questions?
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26. OXYGEN TRANSFER
•Oxygen Transfer in soil media based on literature values of k= kL.a.*E*C* = 10**(-4)m /s 3600s/hr* 20 sqm/cum*6 g/cum= 43.2 g/cum.hr
–kL = 4e-3 m/hr (quiescent liquid) 1
–a = 120 sqm/cu.m (a=6/Dp) (Dp = 10mm particles)
–C* = 6.5g/cu.m
–Max calculated Oxygen mass transfer = 15.6 g/cu.m.hr
•Actual Oxygen transfer
–V = 2500 cum
–F = 100 cum/hr
–COD in = 344 mg/L
–COD out = 16 mg/L
–Oxygen consumed = 32 kg/hr
–Actual oxygen supplied = 13.0 g/cu.m .hr
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1: Caron et al, (1998) J Geochem Expl, v64, p111

27. UNIQUE FEATURES
•Near saturation DO ( 6 mg/L at 28 C)
– no greenhouse methane gas emission
•Significant reduction in Hardness achieved implying biological hardness removal so great commercial value
– Ca2+ + CO2 + H2O = CaCO3 + 2H+
–Rock + 2H+ = soil + Na+/K+ goes into solution
•Soil production for various uses via chemical weathering;
–benefits to urban greening
•Reusable water with high DO
–Commercial fisheries
•No mechanical oxygen supply
–Low energy
–Reliability
•Evergreen ambience
•Energy of waste which otherwise cause sanitation problems harnessed for value addition
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28. New Initiatives
•Containment in Gabion structure
•New Low Pressure Distributor for near uniform space use
•Catalyst for oxygen transfer Fe3+ oxide to Fe2+ oxide
•Fe3+ + organics = Fe3+.organic complex
•Fe3+.organic complex = Fe2+ + oxidized organics (CO2)
•Fe2+ + Oxygen = Fe3+
•Media for higher holdup
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Kinectics of Redox Reactions: Stumm and Morgan (1996) Aquatic Chemistry, John Wiley