100 kld sewage treatment plant case study report

1. Results Of New 100 KLD - MAR (Multi stage Aerobic Bio Reactor)
Type STP at Rane (Madras) Ltd. – Velachery, Ch – 42.
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293

2. 1. Small foot print Area
Old STP - 5000 Sq.ft
New STP - 450 Sq.ft
5000
5000
SMALL FOOT PRINT AREA
89% Space
saving
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
450
0
1000
2000
3000
4000
AreainSq.ft
Old STP New STP

3. 2 .Lower Operating Power Requirement
Old STP New STP
Power per year 2.82Lacs unit 0.784Lacs unit
Cost per year Rs :9.87Lacs Rs :2.74Lacs
Power Per Year(Lacs)Cost / Year(Lacs) 72% Energy
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
2.82
0.784
0
0.5
1
1.5
2
2.5
3
Unit/Year(InLacs)
Old STP New STP
Power Per Year(Lacs)
9.87
2.74
0
5
10
Cost/Year(In
Lacs)
Old STP New STP
Cost / Year(Lacs) 72% Energy
saving

4. 3. Satisfied the Authorities of TNPCB
Parameter
Required
by
TNPCB
Rane
Sewage Old STP
New
STP
PH 6.9 - 8.5 6.9 6.9 7.2
BOD (mg/L) < 30 410 30 Nil
COD (mg/L) < 100 1650 300 5
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
COD (mg/L) < 100 1650 300 5
TSS (mg/L) < 30 420 50 3
Oil & Grease
(mg/L) < 20 58 25 3
Colour (Hazen
Units)
< 25
Clear Black/Grey Not clear
< 5
Clear
Odour Nil Bad Odour Bad Odour Nil
Turbitity (NTU) < 10 80 50 < 5

5. 100
50
60
70
80
90
100
Satisfied the Authorities of TNPCB
Amazing
Result
3. Satisfied the Authorities of TNPCB
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
30
1
5
50
3
15
3
0
10
20
30
40
50
60
mg/L
BOD(mg/L) COD(mg/L) TSS(mg/L) Oil &
Grease(mg/L)
ParametersOld STP New STP

6. 4. Simplicity in Operation and Maintenance
There is no Moving parts in the New STP. So easy to
operate and maintain under widely fluctuating conditions
Easy to install and Dismantle
Easy to move any where
Enable easy operation – Even by unskilled operator
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
Enable easy operation – Even by unskilled operator

7. 5 . No Disposal Problem
The NEW STP system produces very low sludge
Old STP : 16.42 Ton / Year
New STP : 0.182 Ton / Year
No Disposal Problem
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
16.42
0.182
0
5
10
15
20
No.OfTons
Old STP New STP
Very Good
Digests

8. 6 . Capex Savings
Conventional Plant - Old STP - 20%
MAR (Multistage Aerobic Bio Reactor) – New STP - 80%
80%
80%
Capex Savings
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
20%
0%
10%
20%
30%
40%
50%
60%
70%
80%
%
Conventional
STP
MAR type STP

9. 7. Why New MAR type STP?
Activated Sludge Process Multi Stage aerobic Bio Reactor
Large Size Reactor size is small & compact
Suspended growth of bacteria process Attached growth of bacteria process
Close monitoring required Monitoring not required
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
Close monitoring required Monitoring not required
High Maintenance & Skilled labour
required
Low Maintenance & Simple Operation
Efficiency is Maximum 65% only,
Further treatment required
Treatment efficiency is 99%
Widely popular & Old techniques Most advanced technology
Odour & Colour Removal not
Guaranteed
No Odour & Clear treated water

10. 7. Why New MAR type STP?
65%
90%
99% 99% 100%
70%
80%
90%
100%
Comparison Between Conventional & MAR type
STPs
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
50% 50%
30%
20%
30%
40%
50%
60%
70%
Efficiency Odour
Removal
Treated
water clearity
Maintenance
Cost
ParametersConventional STP Mar Type STP

11. 8. Features of NEW STP
1. Odorless Operation with self Regulating system.
2. Non – Clogging design, better oxygen transfer efficiency.
3. Simple to operate with low maintenance.
4. Attached growth process – No sludge recycle and no monitoring.
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293
4. Attached growth process – No sludge recycle and no monitoring.
5. High Bio –Film surface area; compact plant with high loading rates.
6. Removes E-Coli (Coli form).

12. 8. Money Saving ALL THOUGH
In terms of initial investment, operating &
maintenance cost, energy & Space Saving.
Chola Aqua Technologies, No:34, St. Mary’s Road, Mandaveli, Chennai – 600 028. Mbl. 9444303293