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Presented By:
LOKESH SAINI
MTech. II'nd Year
Environment Engineering
Student ID 2015PCE5271
Guided By:
Prof. A. B. Gupta
Department of Civil
MNIT, Jaipur
Performance Study of Community based Reverse Osmosis
Plants for drinking water
A
Thesis Presentation In partial fulfillment of the Requirements
for the Degree Of Master of Technology
DEPARTMENT OF CIVIL ENGINEERING
MALAVIYA NATIONAL INSTITUTE OF TECHNOLOGY JAIPUR
JLN Marg, JAIPUR-302017 (RAJASTHAN), INDIA
1/16
Scope of Work
I’st Half of Project Work•8 Plants of Capacity 1000l/hr located in Jaipur.
•4” membranes, 4”x40”
II’nd Half of Project Work
•8(Jaipur-1000l/hr) + 13(Barmer >1000 & 3000l/hr)
•8” membranes, 8”x40” are used in 3000l/hr
2/16
Raw
Waste0
1000
2000
3000
4000
5000
6000
Raw
Filter
Waste
Avg. Parameters at Kalwara
Raw
Waste0
500
1000
1500
2000
2500
3000
3500
4000
Raw
Filter
Waste
Avg. Parameters at Vidhani
•Results: At Vidhani
•TDS removal 94.5% (‘η’ range-94.0% to 94.8%)
•Divalent ion & Hardness(Ca &Mg), removal=95%
• (Cl¯), removal =91 %
•F¯,NOз¯ removal=98%
Results: At Kalwara
•TDS removal 93.88%(‘η’ range-93% to 94%)
•Divalent ion & Hardness(Ca &Mg), removal=95%
• (Cl¯), removal=92%
•F¯,NOз¯ removal=98%
mg
/lt
mg
/lt
Flash Back
3/16
0
1000
2000
3000
4000
5000
Ju
n-1
6
Ju
l-1
6
Au
g-1
6
Sep
-16
Oct-
16
Vidhani Raw
Vidhani Filter
Vidhani ROC
0
1000
2000
3000
4000
5000
6000
7000
Ju
n-1
6
Ju
l-1
6
Au
g-1
6
Sep
-16
Oct-
16
Kalwara Raw
Kalwara Filter
Kalwara ROC
Results: At Vidhani
•There is effect of monsoon on G.W quality.
•Avg. Salt Rejection=94.5%
•ROC salt is higher by 90.7% to feed water
TDS vs time at Vidhani
TDS vs time at Kalwara
Results: At Kalwara
•There is effect of monsoon on G.W. quality
•Avg. Salt Rejection=92.2%
•ROC salt is higher by 36.6% to feed water
** Salt concentration in GW increased
because operator discharged ROC into an
abandoned tube well in the campus itself.
**m
g/lt
mg
/lt
DrawlDisposal
TD
ST
DS
Flash Back
4/16
Trend line for CIP* cycle
16.05.15 to 19.05.1619.05.16 to contd….
Results •In consequent CIPcycle KWh/Kl reducedby 12%(approx.)•Due to fouling SPCincrease by 12.9%.•P1 and P2 are due toweather effect (rainyand winter season).•D1 & D2 are due tohigh weathertemperature.
Fig- Trend of KWh/Kl (SPC) with time at Vidhani
Secondary Data for CIP Cycle-1
Primary Data for CIP Cycle-2
CIP*=clean in place
2
2.2
2.4
2.6
2.8
3
3.2
3.4
Jul-16 Aug-16 Sep-16 Oct-16 Feb-17 Mar-17 Apr-17 May-17
Jul-15 Aug-15 Sep-15 Oct-15 Feb-16 Mar-16 Apr-16 May-16
SP
C
Time
D2
P1
P2
D1
D2
P1
P2
D1
μ 2 = 2.32
σ2 = 0.18
‘SPC’ min-2.0max-2.56
μ1 = 2.52
σ1 = 0.339
‘SPC’ min-2.03max-3.18
5/16
Case Study Barmer•Introduction330 RO units, Capacity 1000 &3000lt/hr
capacity are installed by Cairns India in
Barmer under CSR.
TDS varies between 1500-10000mg/lt.
•Objective
Performance study & collection of data for community size RO
Units.
•Methodology
Collected water samples of 13 plants from Barmer, Dhorimanna,
Pachpadra, Baytu & Shiv blocks.
Questionnaire Survey.
Collected their data e.g. log book, their testing reports,
cleaning manual & photographs (Secondary data).
Collected Noise Data.6/16
1/3
7/16
2/3
8/16
3/3
9/16
Observations•Oversize plants, capacity underutilized.
•Plants are well maintained & dry pits
are made for brine.
•Use of antiscalant has effectively
delayed fouling.
•Records are not uniformly and regularly
maintained.
•Good water dispensing mechanism.
Conclusion
•Wastage of money for oversize.
•Canal water is to be supplied by PHED,
So no need of RO.
•Training to operator and supervisory
staff is required.
•KPI (Key performance indicator) of
plant is to be regularly monitored to
judge the health of plant.10/16
11/16
Life Cycle ROC & chemical discharge generation (30yrs life)
•Assumption:- 60% recovery in Jaipur based Plants and 50 % recovery in Barmer Plants
12/16
Life Cycle Solid waste generation (30yrs life)
13/16
Typical assessment of emissions in Kg in life cycle
(Lior 2017), (RALUY et al. 2006)
Results & Discussion
•Ground water quality improves during rainy season due to recharging.
• “%” Rejection of multivalent ions is more comparative to mono-valent
ions.
•F ‾ ion removal is good due to sufficient Ca & Mg Hardness is available
in GW, which binds with F ‾.
•SPC is inversely proportional to ambient temperature.
•After each chemical wash of membrane, about1.5-1.75% reduction in
salt rejection due to increase in pore size of membrane is observed.
38% reduction in RO reject flow outlet just after the wash.
13% reduction in SPC after each chemical wash
Membrane pores converting towards nano filtration sizes.
•SPC(G.W. Withdrawl >2.5KWH/kl) & SPC(Plant operational > 2.5(TDS-
2000mg/l) to 3.2 KWH/kl(TDS-4000mg/l).
•Noise level is 74dB(A) (1000l/m³ at 1m) & 84dB(A) (3000l/m³ at 1m).
14/16
Offshoots for future work of Project
1. Developing relation between SPC vs TDS of feed.
2. Fouling Characterization.
3. Cleaning Customization.
4. Optimization of antiscalant use.
5. Utilization of high ambient temperature for feed
water.
6. Solid waste disposal mechanism.
7. Life cycle cost assessment.8. Life cycle impact assessment.
15/16
16/16
Acknowledgement
1. Mr. Ashok Tambi, Assistant Manager, M/S Bosh India Ltd, Jaipur (Vidhani Plant,
Jaipur).
2. Mr. Bharat Jain, Director, M/S Dowec India Ltd, Bangalore (Kalwara Plant,
Jaipur)
3. Mr. Shaswat Kulshrestra, M/S Cairens India, Barmer
4. Mr Sitaram, Operator, Vidhani Plant.
5. Mr Rakesh, Operator, Kalwara Plant.
6. Mr Sadique Ansari, Technician, PHE Lab, MNIT, Jaipur
Thanks