bangalore_water_supply_sewerage_oct_09

8/7/2019 Bangalore_Water_Supply_Sewerage_Oct_09

1/20

TCE

Vol.5 - No.1 October 2009 Quarterly Journal of Consulting Engineers LimitedTCE

Engineeing ee w

Bangalore Water Supply & Sewerage Project II

For BWSSB


2/20

2TCE WORLD OCTOBER 2009 Engineering a better tomorrow

Editorial

VisionTo be an internationally respected engineering

consultant offering comprehensive solutions

It is nice to be back. The subject of this Issue is simple, but special.

Water is life on our planet. Yet water is probably the strangest thing we have. Water carries a mastercontroversial truth. It is plenty on the earth; still it is scarce. In reality, our planet is not earth; it is

water. Our planet is water planet. Three fourths of earth surface is covered with water. But, most

of that water is saline. Saline water is not useful to us. Of the fresh water, bulk is in glaciers and

ice. That too is not available to us. Only 0.01 per cent of the total water of the planet is accessible

for consumption. In India too, water is plenty, but scarce. India has 14 major rivers, 55 minor rivers

and several hundred small rivers. Water is still scarce. That is how water is the most important and

a scarce resource for us.

TCE has been working on water projects for three decades. The projects are about the various aspects

of water: water supply and distribution projects, potable water projects, wastewater treatment

projects, geological and hydro geological studies, leak detection projects etc. TCE has engineered

waste water treatment facilities in major cities of India: Ahmedabad, Bangalore, Mumbai, New Delhi

and Chennai.

One major water and sewerage project that TCE is working at present is for Bangalore Water Supply

and Sewerage Board; Stage IV, Phase II Project. TCE worked on the Stage IV, Phase I also.

This issue of TCE WORLD covers papers on the various aspects of the BWSSB Phase II project. It is

indeed an important infrastructure project for the IT City of India. The subjects covered are: Water

Demand & Supply Management for Bangalore City, Ground Level Reservoirs, Procurement under Japan

International Cooperation Agency Funds, Reduction in Unaccounted-for Water & Leakage Control,

Sewer Lining, Surge Protection and Water Treatment Plant Process Options.

Trust our readers will fnd these articles interesting. TCE is proud to present this issue to the readers.

TCE WORLD issue is delayed, but it feels great to be back.

Happy Reading


3/20


4/20


Water Demand & Supply Management For Bangalore City

The water supply of Bangalore City is not matching the fast growing water

demand. There are various reasons for this situation. Bangalore Water supply

and Sewerage Board (BWSSB) is embarking on a programme to reduced leakagefor conservation of water. The author discusses the issue and then suggests the

various possible solutions.

Deepak Kumar Mallick

te we ppy f bnge ciy i

n ing e f gwing we

dend. te dend pjein w

e we defii wi gw. bnge

Devepen aiy (bDa) i e Pnningaiy f bnge mepin ae.

bDa pepe e cpeenive

Devepen Pn (cDP) f bnge

mepin e. bDa nw en p

eviin f cDP.

Demand

We dend een egized in

e fwing:

Domestic demand

Non-domestic demand, comprising

Other Allowances

Fire demand

Allowance for Leakage

lege e iniied g

yei pge. bWssb i

eing pn pge ve

the Core Area in about the next five years

ede e ege epe ii.

Supply

We f e cvey We sppysee sge I, II, III, IV Pe-I nd IV

Pe-2 i g in e iy. We f

cjg Wew n e avy

rive i nveyed e ween p

f e iy. afe e ipeenin f

Pe-2 pje, we qniy f 1348

md n e de vie f e iy.

Demand Vs Supply

bWssb i ne ee e dend f

Continued on page 14

Mobile Tanked and Pump Approach

Metering Illegal Consumption

Metering Error

Supply Management

sppy ngeen i eqied inee

the supply of water from existing as well a

enive e ee ige dend

nd n eqie diiin f we

te ppy n e ineed y fwing

ed.

e we iy (800 q). hweve bWssb

w ppying we ny e e e

(225 q) nd e djne e (76

q. ) i 2008. sine e peen we

de ege i 37%, e defii i e n e pjeed ve.

Demand Management

Dend ngeen invve ee

pe e effiien e f we.

cnevin n fe fe ppy-

piy need; i n e ipeened n

e ppy we e dend ide; nd

i n ni f epy nd penen

ee. Dend ngeen ni

f 2 p.

1. miniizin f we e

2. miniizin f We le

Minimization o Water Uses

t iniize e we de

iiizin, e pi wne i

required. Fix leaking taps, Pipes etc.,

iediey nd e egy f e

y ei wne.

Minimization o Water Losses

miniizin f we i e edinin uFW (nned-f we). a peen

uFW i 37% in bnge. redin

f uFW i dne y dividing e

diiin new in e ydi

ied e .

afe eiing e Dma e uFW

edin n e dne. se ed f

eing ege e enined ew:-

Minimum Night Flow (MNF) Approach


5/20


Wee ied wi nien

ndiin e ipn in e deign

nd pein f pping in f we

ppy ye. te peen dy i ed

n ce We tniin sye ft.k. hi bnge ciy nde cvey

sge IV, Pe-II Pje. unde i pje

e pped Pping min (2700

diee nd 18 e ine) wi

nvey 500 md eed we f We

Treatment Plant at T.K. Halli to six (6)

ning eevi in bnge iy.

te pp effiieny geney ede

igy fe e pp i in pein

f few ye. t e p 6%

extra flow is considered for each pump. So

e fw nideed f niennyi e 530 mlD f n ndiin

nd 615 mlD f spei ndiin.

Cause o Waterhammer & Protection

Devices

Wee in e pping in i

geney ed y ee f: sing

f pp, vve pein nd ipping

f pp de pwe fie. t e

extent possible, it is necessary to design

ge n eqipen ei

nien e pevened. uing nien

de, ne n y diffeen vve peing

peed, pipe ize, nd pp n

ee if e nien effe n e ned

epe eve. If nien nn

e pevened, peifi devie n

nien y e needed. se ed

f nien pevenin inde w

pening nd ing f vve, ppe ppn, we pipeine veiy e.

Choice o Surge Protection

te e ed f wee pein

f pping in wi depend n e

ydi nd pyi eii f e

ye. ai ce, one wy ge n,

ai ine nd e vve e ed e

n ge pein devie in

pping in. reen devepen in i

e gge viiiy f e enive

devie ie ani-sge Vve, V

bee c ai cin Vve e. In

ddiin ai ce nd one-wy sge

tn ee ype f eeny deveped ge

pein devie n e ed diffeen

ee f pping in ede ig

nien pee nd negive pee.

Design Criteria

te ge pein ye e deigned

to control the maximum and minimum

pee wiin peified ii fwing

e nien even. te fwing deign

iei e dped f eing e

nien pee fe pwe fie

pumps: (a) The maximum pressure should

e e n 1.5 ie e wing pee

nd () te ini pee in e

pipeine i eied ne id e

pei pee.

Computer Program/Sotware Useor Transient Analysis

te nyi een ied wi

hydi tnien mdeing sfwe

hammEr. te pg idenifie

magnitudes and locations of maximum

nd ini nien pee nd fw

ng e eng f e pipeine nde

nien ndiin.

Transient Cases & Transient Analysis

bdy e fwing e e nideed

f nyi nde n nd eegeny

peing ndiin: () Pp s-p

() Pp ipping / Pwe fie pp

anye e ied f ine

power failure to six (6) working pumps

wi i e n peing ndiin

hweve, e evin f ge pee

nd deqy f ge peive devie i

eed f seven (7) pp wing

nd ipping e. seven (7) pp y

e peed ding eegeny ndiin

o f ee pping ee dei

nyi f ne e-t.k. hi hi i

discussed here. The maximum and minimum

nien pee f diffeen nien

e nyed e peened in e te-1

Selection of Surge Protection Devices for Cauvery Stage IV,Phase II Clear Water Pumping Main

Waterhammer, or surge, in the pumping main results in severe damage to

the pipeline. A reliable surge-protection system must be in place before the

occurrence of uncontrolled emergency conditions; e.g., pump tripping due

to power failure, etc.

The authors describe how the proposed Cauvery Stage IV, Phase II pumping

mains are considered for surge analysis and adequate protection devices are

proposed. The pumping system is three-stage with three different stretches.

The transient models for the three pumping stretches are prepared and

analysed.G. N. Virupaksha Arnab Kr Mondal

te pped e we niin ye wi pping ee, pping in, Pping ed nd pping fw e fwing

Pumping Reaches Pumping Stations Pumping Heads Pumping Flow at Normal

Condition (6W +4S)

Pumping Flow at Special

Condition (7W + 3S)

t.k. hi hi (44 ) t.k. hi 135 500 580

hi tgni (20 ) hi 143 500 580

tgni bnge ciy (50 ) tgni 135 500 580


6/20


Table-1: Maximum and Minimum Transient Pressures Head

Case

without protection device with protection device

Head at Entire Network (m) Head at d/s of Pumps (m) Head at Entire Network (m) Head at d/s of Pumps (m)

Max Min Max Min Max Min Max Min

Pwe fie 7

wing pp238.6 -10 238.5 22.7 156.4 0 156.4 80.6

Pumping Station Air Chambers as a surge Protection Device One-way Surge ank as a Protection Device

Graphical representation of max and min

pee ed i wn in ve fige.

Parametric Studies

te deign f e ge pein ye

i iy n ieive pe evve

deqe nd eni pein

ye n e nien pee

effeivey. F e ee pping

ee pei die een ied

wi inii i ve in ai ce, e

diffeeni ifie ing in e

nneing ine e i e nd ize

f ne wy ge n.

Conclusions

bed n e wee nyi, e

fwing e e j nin:

Power failure to seven (7) working

pp iney i e

ii e f nien pin f

view.

All the three pumping reaches are

jeed evee pei

pee ve nidee eng.

A combined protection system of air

e, ne-wy ge n nd

i vve i enviged f pipeine

f t.k. hi hi e. ai

e ne wi i vve e

pped f pipeine f hi

tgni nd tgni eevi

wiin bnge iy.

Surge protect ion dev ices are

nideed f ii ndiin (7

pp pein)

Air valves at several locations along

e niin in wi

endy ge peive devie.

Max & Min ransient head without Protection Device Max & Min ransient head with Protection Device

Sl No Reach Surge Protective device

1 t k hi hi 9 Ne i e (e 100 3) nd

one wy sge tn (21 Diee nd 4

eig) J.k. Dddi.

2 hi tgni 8 Ne i e (e 100 3)

3 tgni bnge ciy 8 Ne i e (e 100 3

ooo


7/20


f e iin. te vi ype f

ining e given ew:

1. Pye lining

2. PVc lining

3. rl lining

Sewer Rehabilitation / Replacement

bnge i ng e fe gwing

iie in ai nd i ne f Indi pidy

deveping den n ene. tewe ppy nd wewe ye

wiin e niip ii e nde e

ngeen f bnge We sppy

nd sewege bd (bWssb).

ang e jeive f e pje,

e fwing e j wk e

ipeened:

Augment the water supply by

500 d nd ipveen in

niin nd diiin ye

ede e we ekge nd

nned-f we (uFW)

Augment the sewerage system for

e gened we ppy. ti

inde deign f new nk ewe

ye, eiiin/epeen f

existing sewers and sewage pumping

in, e.

Bangalore Sewerage System

te ewege ye f bnge w

deveped in e 1920 wi w

nfined e en eviy ppede in e e f e d iy. I w

gradually expanded to the adjacent areas.

te eeed pipe ei f ewe i rcc

f NP3 . F fe ineing e ife

nd in eine, i i pped

pvide inen ining e n ewe

in e pge.

Induced Corrosion in Sewers

hydgen spide (h2s) inded

Sewer rehabilitation / replacement requires expertise

because the sewer lines are buried. The lates

technologies are adopted for this work. Sewer

damage in most cases is due to the corrosionof pipes due to H2S. Sewer lining increases the

resistance of the pipes to this attack and increases

the life of the sewers.

The authors describe how sewer lining is done, the

lining types and the inspection methods used on the

BWSSB Project and a recommendation of the liningD. M. Mandalia Deepak Kumar Mallick Mohammed Junaid

in i n ie in ewe in pi

ie. ofen e deign ife-pn i

nidey eded, nd in e e, ne id f. te in iigin

ee vee e in in

ewe i in pipe e ein

ydgen pide k. tee e

eve ype f in ein pipe

nd e diin pipe i e

Gzed sne-we pipe. bedide ee

e ny e ein ed pipe

as uPVC, GRP, HDPE etc. The existing

bnge sewege sye e

gzed newe (viified y) pipe

f ize p nd inding 300 nd

rcc pipe f NP2/NP3 f gediee.

te pipe nd jin ei d e:

1. ceiy e nd in

resistant to wastewater and external

ggeive i nd gnd we

2. ceiy e nd ineny

in ein h2s nd

industrial discharges and externally

in ein ggeive i

nd gnd we

3. rein iigi k

4. Ipeee nd ffiieny in

ein

teefe e pipe ve e ineny

lined to avoid exposure to the sulphide

envinen. ced cii teeviin

(cctV) inpein e dne efe

ining knw e e nd e ne


8/20


4. hDPE lining

5. mEtachEm Pin

6. hig ain lining

7. Pene

8. uvie (uV) lining

P y e i y p e

ee i deived

f e ein f n

iyne pnen

nd ynei ein end

pnen. Pye

peive eei

ing ve niqe

ppeie ike wepf,

e.

PVc ine ni f

nin pi pfied ip wi

is spirally wound into the existing

deeied pipe. te pi

widening ke pe eween w

ne.

r i f-e piy wnd

PVc ine ee e

inegiy, eiiiy nd effiieny f ging

ewe, gviy pipeine nd ve widiee f 800 1,500.

r ni f inge, nin

ip f PVc, wi i pgeivey wnd

into the existing pipeline by a winding

machine. No excavation is required.

hDPE ining pvide n effeive iing

ie gin e nee in

f e nee e, ewe pipe,

nne, ne, e. hDPE ining

system is a continuous, extruded and

gene pi ee ene

of flexible Polyethylene that is especiallycompounded to provide maximum

eine gin ei k. hDPE

ining ened nee pein f

ve 100 ye.

me-e i n niive pin

wi pe pipe f in nd

i vie in 701, 701a, 701r, 702, 703,

704, 709, 711, 715, 716 in e ke.

hig-in een i pid-dening

cement made by fusing a mixture of

bauxite and limestone in an electric

fne in y kin, 1,500

1,600 c. hig-in een gin

ig ppin f i ie eng

wiin 24 nd ig eine

ei k. hig in een

een ed ine e inei f rcc

pipe inended f ewge npin

Pene i 100% id pyene

ing f ng e pein f

nee in ieed, p nd ied

envinen gin in, in

nd ip. te pd vie in

e ke e Pene386/9000

Pene 386h/12000, e.

uV ining i new dvned, N-dig

ewe epi pe nw vie f

Dyn-rd, e eegeny din episevie cpny. te ye i deigned

pvide f epi f ewe pipe nd

i peed f inin. te ine, wi

i ipegned wi ein, i ed qiky

y ing uV ig in.

Project Recommendation

F e ten-eni nyi, rcc

pipe wi in peive ei

viz. hig ain ceen ining (900

di pipe) e fnd eniynd nd eni. F e bWssP-I

Pje pye / ig-in ining

nd PVc ining e eended. b

ype f ining e dped f diffeen

diee f pipe

ooo

Safety First and Always20 million accident-free, safe man-hours

Major Facilities of the Park

y Engg. biding (6)

y Gene sevie biding (12)

y uiiy biding (3)

y cen spine (330 ng & 30 ig)

y twe (130 ig)

y liy, adii, tining cene

y Ge he, c he, api tee

y mieve ping, Gf gnd

y aifii e e

CS echno Park -ChennaiSingle, Integrated & Largest Facility in South Asia


9/20


bnge ciy i f deveping

n diniive, indi, de,

ei nd edin ene. In

egniin f i ipne, nyinin pnie ve ifed ei

pe ffie ee.

te we ye wiin e d mniip

ii efe 2005, wi d 100 wd, i

nde e ngeen f bnge We

sppy nd sewege bd (bWssb).

te we ye f e ciy mniip

cni (cmc) ve eeny eged

wi e bnge mng Pie

(bmP) nd fed e b bnge

mng Pie (bbmP).

tee f ve eed in n inee ine ppy e f bWssb nd in ddiin

we dend. ove e ye, bWssb

pie ep gen e we ppy

e iy, ding 1974, 1982, 1993 nd

2003. si e bWssb i n e ee

e dend. Fe, bWssb fed

n eding e unned-F We

(uFW). In i nnein, bWssb, nde

W7 cn f cWss (cvey We

sppy see), sge IV, Pe I Pje

(fnded y JbIc) ipeened pi

pje eween 2003 nd 2006.Fige 1

w e w ndeen ding epi pje. ti pje eed in

e edin f uFW, f 64% 38%.

Wi e e f e pi pje, bWssb

i pnning ndee Diiin

sye Ipveen nd uFW redin

Pge in we diiin ye

f bnge iy. ti pped pje

wi e ipeened wi n f Jpn

Inenin cpein ageny (JIca).

Proposed UFW Reduction Plans

te uFW redin & cn nd

Diiin sye Ipveen Pje

wi ve e f 305 k2,piing e ce ae f e iy de

f 100 wd (221.32 k2), gee wi

djen e ide e ce ae (84

Km2). This area is divided into six contracts

indied in Fige-2. tee n

D1, D2 nd D2 wi e ipeened in

b-1 nd e eining ee D1, D1

nd D2 wi e ipeened in b-2.

te pe f e pje i divided in f

pnen:

Part-I: Preparing Work, Testing &

Repairs Carry out topographical survey and

pde bWssb

GIs ed

U n d e r t a k e

n e w

deing

Measure the initial

eve f uFW.

R e d u c e U F W

eve 16% y

ying e

dee in nd

epi w

Replace corroded

eing evie

nnein wi

new mDPE evie

pipe w nd

fiing

I d e n t i f y a n d

epe in

Prepare DMA Files and DMA operation

nd inenne n

Part-II: Pipeline Rehabilitation

Strengthening o Network Assess pipeline replacement and/o

ening w

Replace/clean pipe line works

Clean and line the existing pipe line

with cement mortar/epoxy spray lining

Part-III: Maintenance

Regularly monitor the performance o

e Dma (fw, pee, ppy

, ege nd uFW eve, e.)

Identify when remedial action needed

Undertake leakage surveys as necessary

e nd epi e

K..Veerabhadra Swamy K.Vigneswar Rao

Reduction in Unaccounted - For WaterAnd Leakage Control

Unaccounted-For Water (UFW) is a loss. Prevention of UFW is a vital issue

in Water Industry. UFW is the difference between the total quantity of

water entering the distribution system and the total quantity consumed

In a number of cities of the developing world, more than 40% of thetreated water is lost before reaching the consumer. The reduction of UFW

is a crucial step to improving the financial soundness of water utilities

and to save scarce water resources.

The authors describes the pilot project of BWSSB covering about 20 sq

km in the core area during 2003-06 and the plans to extended in the

remaining part of Bangalore.

Figure 1- Physical Woks during Pilot Project

Continued on page 12


10/20


TCE Celebrat

Delhi : 07 February 2009

Mumbai : 29 January 2009

Bangalore : 31 January 2009

Welcome, Mr. Gupta

Te more, the merrier

Sweet voices

Good tastes: Good times

Beautiul eorts

Best pictures are really the painters themselves


11/20


nnual Day 2009

Kolkata : 29 February 2009

Pune : 14 February 2009

Jamshedpur : 03 March 2009

Employees perorming

Employees showing the other skills

asty part o the Days

On way to a nice time

Wonderul kids

Dancing a good oday


12/20


Re-measure leakage and UFW until

eve eded eqied ve

Update DMA Files as necessary

Part-IV: Training

Training of BWSSB Staff in all activitiesied wi e Pge

Project Details

a 130 2 e piing cen,

We nd s p f e ce ae

w en p nde e uFW redin

nd Diiin sye Ipveen

Pge nde b-1. te eining

e f 175 2 e piing

s-E, E nd N p f e

ce ae wi e en nde b-2. te

gene infin f e Pje e i

in te 1.

Methodology to Reduce UFW

te edgy i e Dii mee ae

ed. ti ed ni f dividing

e diiin new in e,

ydiy ied e ed Dii

mee ae (Dma). Infw nd fw

e ndie f Dma e e eeed.

uFW i e diffeene eween e

qniy f we eneing e diiin

ye nd e qniy ned.

te pnen f e uFW e divided

in w gp:

1) Pyi e: lege f eevi,

n in nd diiin ye

2) Nn-pyi e: tee inde:

Consumer meter errors

Non-functional consumer meters

Illegal use of water

Un-metered connections

Administrative errors

Pyi e e eed ing e Ne

Nig Fw (NNF) ed wee nin

we ppy ngeen n e de.

te ege i eved f e fw

eeen en e Dma ppy

fw ee wen e dend in e Dmai ini. ti wi geney e

eween 01.00 nd 04.00 .

In Dma wee i i n pie ppy

we f 24 , n enive pp

ne ed i dped. In i

ed, ein f e in e

epiy ied f e e f e

new nd we i pped. te ee

f fw ding i eing i ee f

e in i ein.

te nn-pyi e in e ye e

eed y ying e nevey in wi e infin n ype

f ee, nn-fnin ee, dged

ee, n-eeed nnein e e

eed. a pe ne ee e

eed f e y. te e f e

ne vey nd e ee eing give

e ee f nn-pyi e.

Pipel ine Rehabi l i tat ion and

Strengthening o Network

te pipeine eiiin i geney ed

n e in nd inepein f e

ii pe d nd pin,in vey, pipe ping e,

peized new deing, pee

nd fw vey nd ege vey.

Identifed works

an een een de f e

iey eqieen f e devepen

f e Dma nde e n pge

f Diiin Ipveen, redin

in uFW nd lege cn. tee

pp e ed n dy f vie

GIs infin wi bWssb, pe

new nyi nd nideing e

experience of the pilot project.

Maintenance and Training

te opein nd minenne (o&mpeid f e Dma wi n

e geed ge eve f uFW

een eed. te de f e o&m

peid wi eefe e diffeen f e

Dma. Ding e inenne pe

e pje, e n wi inin

e uFW eve e ge eve. Wen

e ege in e Dma inee, e

n wi d e e deein vey

nd epi e e, ing e

uFW eve e ge eve.

te cn deive ffiien ining

bWssb ff e bd ff i e

pn nd ndee uFW edin nd

control. The training is a mix of on-the-job

ining nd ining.

Benefts o UFW Project

Increase in revenue

Longer supply hours

Internal valve operations within the

Dma e iniized

Increased pressure in the network

ene ee evie Capital works expenditure can be

defeed

Avoiding pollutants from surrounding

e geing in e ye

Use of latest technologies for UFW

edin ipve o&m ye.

Reduction in the incidence of failed

we diiin e

ooo

Figure 2- Proposed Contract Packages

Table 1: General Inormation o the Project Area

Parameters

Batch - 1 Batch - 2

Contract

D1a

Contract

D2a

Contract

D2b

Contract

D2c

Contract

D1b

Contract

D1c

Pin

veed

cen We s s-

E

E N

ae (2) 20.55 57.52 52.04 34.39 64.24 70.89

Ppin

(2036)

568648 1349579 917978 743213 1675199 1798877

cnnein 47641 132236 105696 44927 64429 79411

Continued from page 9


13/20


Structural Design of Ground LevelReservoirs In Bangalore City

A ground level reservoir is a storage tank constructed within a city for water

supply. It stores water for supply to the city, by Trunk Mains. Reinforced

Cement Concrete (RCC) Ground Level Reservoirs (GLRs) are extensively

used by Municipalities and water supply boards, for drinking water storage

and distribution in cities.

The authors discuss the structural design of RCC ground level reservoirs

proposed for Bangalore Water Supply and Sewerage Project II (BWSSP-II)

Mudassar A Wasta R Rathina Giridhar

Gnd leve reevi (Glr) e ed

piy en f ge f dining

we in iie. te Glr e pefeed

wee e gegpy i we

f e eevi wi fw y gviy e e deigned e. te Glr n

e ned e ge ve f

we. tey eqie we pping ed

n f eeved eevi. reevi e

eeni ee e n in nn

e ed f die diiin. t

te bnge We sppy nd sewege

bd (bWssb) e e we ppy nd

ewge dip need f bnge iy. a

peen e we dend ineed

nd ene i Pje i en p. Pe II

f sge IV w pped ee gwingdend nd i nde ipeenin.

te sge IV Pe II pje wi ppy

500 mlD f pe we e iy f

bnge.

I i pped n 6 Gnd leve

reevi nd e iy ving piie

nging f 9 ml 50 ml, nde Pe

II pje.

Existing BWSSB Reservoirs

Of the existing BWSSB reservoirs in

bnge iy, 10 e ged e n 60

years and provide 19% of existing water

ge f e iy. se d eevi e

nw f evie.

Design Options

a pin f nieve w eng

eevi, i eevi nd fded

pe w eevi w ied . te

dvnge nd didvnge in e

nin nd o & m f ee eevi

e ied in e te 1.

Shape Consideration

bed n e dy ied ding

sge-IV Pe-I pje; inge yinde

i deign i fnd e eni f

eevi e n 9 ml piy. hweve

de yinde w pen deign i

more expensive than the rectangular design.

te eng deign i eni f

eevi ving e n 9 ml piy

Local experience indicates that a dome

f e diffiie f inenne

nd epi. I i eended e

eng deign e dped f e

eevi.

Table 1: Comparison O Reservoirs O Dierent Shapes

Rectangular reservoir Circular reservoir Folde d plat e wall

reservoir

advngend

didvnge

E a s y t ode e

eevi pe

nd pe.

Simple Structural

d e i i n g n d

cnin

C o n s t r u c t i o nn e e d i e d

wnip.

D i f f i c u l t t o

inin qiy

n

Dead space may

e eed in e

ie y.

Re inforcement ngeen

nd een f

nin jin

eqie i ed

wnip.

advnge

nd

didvnge

in o & m

With soil / gravel

/y ie ve,

e effe

e eevi ne eded.

Least maintenance

Easy Repairs

D o m e r o o f

need peidi

i n pe i n f

ing. Repair difficult.

Special treatment

peven e

effe

Square dome roof

need peidi

i n p e i n

f i n g .unein. life

W i th the r m a l

e f f e e

eevi n e

eded.


14/20


Design Storage Depth

Deign we dep i e dep eween

ig we eve nd w we eve in e

eevi. a w eevi need ge

e f given piy, nd in deep

eevi i i e diffi eep we

igne, ine depie einfeen,

ee e e ignifin fin.

Cover to Reservoir

te in de diy epee

nge i ne f e j f ffeing

n deeiin f e eevi. te

effeive ee gin i i i

gve / y ie ve e enie

eevi e.

General Design Requirements

te fwing deign ndd wee

dped wie deigning Glr:

1. te eevi deign i ed n Indinsndd cde f pie (Is 3370,

Is 456, Is 875, Is 1893) Inenin

de f aWWa [nd bs f we

eining e e efeed.

2. Deign depeiin peid f e

eevi i e 50 ye ini,

3. F ng e diiy f e

and maximizing of water tightness,

ini ine f w nd

e en 250 nd 200

epeivey

4. te eevi ve w e

fiie inenne wi

diffiy in ppy f we.

System Design Requirements

a. Ine nd oe angeen te

f e pipe feeding we

e eevi i ep 10 ve e

maximum water level.

b. reevi e: te dep f fing iep ini f 1 ew e

gnd nde n i ndiin.

c. ae nd Veniin: rcc ie

e ned, ne f e e

wi n eny f ve.

D. Dinge: t e vef w

ndiin, epe e e

ned ng e w f e

eevi.

Conclusion

a diin n deign f pped rcc

Gnd leve reevi in bnge iy

is carried out. Observations on existing

eevi ve ed ny ipveen

in e deign iei f e pped

eevi wi epe pe, ize, ve

ei f nin, y, gene

ngeen, deign, veniin

nd e pee.

ooo

Storing rain water runoff in lakes for

ee

Rainwater harvesting for borewell

eg ing nd gnd we

eging

Recycling of waste water

Tertiar y treated waste water for

Indi e

Storing Rain Water Runo in Lakesor Reuse

Rainwater Harvesting in urban areas

i e pe f eing, fieing

nd ing f inwe, wi f n

e fp (ee ie f) nd

in e pi f e e. rinwe

veing n e dped in ee

ed. tee e; eging fewe ne e e, eging

f gnd we e nd ein

f inwe f ee. tee i

ffiien inwe peni vie

in bnge iy.

Most of the lakes in Bangalore are

envineny deeiing nd

e ge piie ve een

eded ee f iing nd id

we nd gge dping. tee

i n inenne f n nd nd

piwy. se pe e need/

vefwed ewge we i fwing

e e diey. s e fwing

eiiin w e dne.

De-silting and De-weeding

Strengthening of tank bunds and

piwy e

No access to the public near to the

e

No sewage water should be allowed

wi ppe een

Recycling o Waste Water

bnge iy i ving we deveped

ewege ye in e e e. a ewe dend i ig, e we we

genein i ig. In bnge iy 13

STPs exist and under BWSSB-Phase-II project

ne 9 stP e pped, wee e

locations are adjacent to the existing STPs.

te dei e given ew. ree f we

water is a good option, but an expensive

pin. afe ef pein f i

pje ddiin 135 mlD f we wi e

vie f e iy.

Tertiary Treated Waste Water orIndustrial Use

Indi dend in bnge iy i

approximately 10% of the total demand

s f e ye 2021 e indi dend

e e 215.54 mlD. I i pie

e eiy eed we f indi

ppe. bWssb i eny ppying

eiy eed we f indi nn

dei e.

Public Awareness

Pi d ge nwedge e

ve f we nd e nevin

we. I i bWssb Gvenen dy

ede pepe n ie e we

nd e vi ed dped f

we nevin. rinwe veing

n e de py f e ed nd Gvenen d give e

idy f i.

Conclusions

bWssb Gvenen f kn

e e neey in ve e

we pe in e iy. bWssb d

find e enive nd eni wy

ee e we iy f e iy.

ooo

Continued from page 4


15/20


Options for Water Treatment Plant Processes

Bangalore is ranked as the sixth largest city

in Indi nd i ne f e fe gwing

epin iie in Indi. reeny,

e Gvenen f kn eged 8

un l bdie nd 110 vige wie ewie bnge mng

Pie (bmP) nd fed b bnge

mng Pie (bbmP). adingy

bnge We sppy nd sewege

bd (bWssb) evie e ineed f

300 q 800 q. te pjeed

ppin f e e e nd peipee in 2011 i 7.6 iin nd in ye 2021

is 9.7 million. The existing supply to the City

i 959 mlD, given in te 1.

Water Treatment Plant - BWSSB

Project II

te rw we qiy nideed f

e we een pn (WtP) pedeign i ed n e e f e w

we nyi ined f p ye. ti

i given in te 2.

A number of treatment process alternatives are being used worldwide

to meet the desired goals of quality of the treated water supplied to

consumers. Selection of the process depends on the various factors,

the most important being the raw water quality and the treated water.

The authors describe the various treatment alternatives along with the

pros and cons, considered on the BWSSB Project II.

P L Kshirsagar Yatish

Table-1Present Supply Design Capacity O Existing Water Treatment Plant

Sr. No Source WTP Location Design Capacity in

Mld

Year of

Commissioning

1 avi riveheg

149 1896 g 1933/64tippgnd hi

2 cvey rive

t k hi cvey ge - I 135 1974

t k hi cvey ge - II 135 1982

t k hi cvey ge - III 270 1994-95

t k hi cvey ge IV, Pe I 270 2002

t We sppy 959

Table 2Raw Water Quality Criteria For Process Design

Raw Water Parameter Units of measurement Design value

tidiy Ntu 100 max, Less than 20 NTU 95% of the time.

ph ph ni 7.0 in* 9.0 max*

ainiy g/ cco3 30 in 200 max

t dne g/ cco3 30 in 160 maxt dived id g/ 70 in 350 max

Eei ndiviy mhos/cm 100 in 500 max

ci g/ 5 in 40 max

In g/ 0.3 in 1.0 max

mgnei g/ 3 in 28 max

t cif mPN pe 100 2000 max

tepee c 19 min 36 max 26 mean

t spended sid g/ 400 max, Less than 60 mg/l 95% of the time.

* min- Minimum, max- Maximum


16/20


Table 3

Treated Water Quality Criteria

spe lin Pefne reqieen

seed We tidiy e n 5 Ntu f 90% f ie

cined fie tidiy: le n 1 Ntu f 100% f e ie; e n 0.5 Ntu 95%ie f e ie

a: le n 0.03 g/ 95% f e ie, nd n e n 0.2 g/ ny ie.

ph: 7.0 8.5

c: le n 5 ni P/c e

In: le n 0.1 g/

Fie f individ fie tidiy: a ve

a: le n 0.03 g/

cewe eevi e Fe cif 0/100 l (Ni)

t cif 0/100 l (Ni)

Treated Water Quality

te eed we qiy eqieen e

peified ee e eendin fthe expert committee constituted by the

Gvenen f Indi, in e mn n

We sppy nd teen (my 1999 -

tid Ediin). bed n i ndd, e

eed we qiy iei e peified in

te 3 ew. tee ndd ve een

fwed f e deign f WtP t k hi.

Water Treatment Process

teen ni pee wee idenified

ed n e eview f fnining f

the existing treatment plant(s), the rawwe d nd e eqied pefne

pee. F e pped ge IV

pe II WtP t.k hi, five pin wee

died f e WtP.

1. cnvenin Pe wi hig re

Inined Pe cifie/Inined e

cifie

2. cnvenin F b sdge (F)

bne cifie Pe

3. Dived ai fin (DaF)

4. bed Fin/ mi nd/

Pi edi pe nd

5. lw Pee mene Pe

E enive w eved nd

ped wi ne ne f iiiy

f ipeenin p f e cvey

sge IV, Pe II Pje. te evin

w ed n e infw viiiy

f 600 mlD nd ne f iei ie;

w we qiy, eed we qiy,

iiiy f deign nd ipeenin

in bnge, pein nd inenne

ie, viiiy f pe nd f

ipeening.

Discussion

te dy f e eie wed

e pi f ene fiin

w 16 % ige n e nvenin

een pn wi P engy.

hweve, e f eed we

e end f 30 ye ife ye i we n

e nvenin pn. te piy

dive in e ige i epeen

f ene evey 7 ye. a e

membrane life is extended beyond 10 years

ee wi ee pe

wi e nvenin een pn ife

ye .

te pi f die fiin pn i

pe wi f nvenin

pn wi e pe ee. te

ig diffeene eween e o&m

eween e die fiin pe nd

nvenin pee i eeniy de

e f e ei in die fiin

pn.

bed n e ni pe engy

evin i i eviden e nvenineen engie need we pi

inveen n e ni pee

dived i fin, ene

fiin nd ed fin. F e

ve 30 ye ife ye f nvenin

een pe wi f DaF we

ene fiin pe, e

pee e ny giny ige in

e f pe-mlD f eed we.

ooo

Existing Water reatment Plant at .K.Halli Cascade Aerator Pulsator Clarifer


17/20


Procurement underJapan International Cooperation Agency Funds

Jpn Inenin cpein ageny

(JIca) eqie e peen f gd

nd evie in pje nde i fnding i

dne in dne wi i Gideine

f Peen nde JIca oDa ln.tee gideine gven e einip

eween e JIca nd e bwe w i

d e peen f e pje. N

pviin f e Gideine e en

eing ny ig igin eween

e JIca nd ny id py. te ig nd

igin f e bwe vi--vi e

idde e gvened pe e idding

den wi e ied y e bwe,

in dne wi e Gideine.

Prequalifcation o the Bidders

te JIca nide in e,

Inenin cpei ive bidding

(Icb) i e e ed f ifying

e eqieen. teefe e JIca

ny eqie e bwe d e

peen g Icb, in dne

wi e pede deied in P II f

e Gideine.

F w nd evie e ped

nde e n geeen nd e pge

nde Icb, e peqifiin f idde i

ndy. te peqifiin den

f i Pje wee peped in dnewi e JIca pe den. te

peqifiin f e idde i e

pe e pede in e spe

peqifiin den.

Use o FIDIC General Conditions oContract

FIDIc ( Inenin Fede in f

cning Enginee) pied f

f Gene cndiin f cn, wi

e fi nd eqie. FIDIc ndd

f e egnized y e nin

indy nd ve een eed f n

extensive period in many jurisdictions over

e wd. meve, pe e gideinef e fnding geny, e FIDIc f e

e ed.

te fwing f f FIDIc cndiin f

e cn wee dped f fin

f id den:

(1) F ie e n: cndiin f

cn f cnin f biding

nd Engineeing w deigned y e

Epye - Fi ediin 1999 (new ed

)

(2) F p deign, n ndney n: cndiin f

cn f Pn nd Deign, bid

f Eei nd meni Pn

nd f biding nd Engineeing

w deigned y e cn- Fi

ediin 1999 (new yew )

te en f nideing e 1999

ediin i ey e e e nd

e ne ve j pi f e

ndiin. tee e weny pe f

in e nd ne e

in e pe. te Gene cndiine ndd inin f pi

n pviin. Wie e Pi

cndiin f e n e e e

f peifi difiin e Gene

cndiin wi e pped i

pi n.

te FIDIc f f e cn f Pn

nd Deign bid i iny ve W

cn p f e cn. Wie

in e pje i w ped inge

n Deign id we pee

nd inin d e wded inge

cn, piize e -dinin

qiy nd pefne.

a f e, w-envepe

pede w dped. unde i

idding pede, e idde i

iney, e teni pp nd

e Pie pp, in w epe eed

envepe. t fiie i iin, e

den wee fw:

(1) Ve 1: Gene eqieen

- Inviin f bid, Inin

bidde, P I Gene cndiin

P II Pi cndiin

cn, e;(2) Ve 2: speifiin (F tney

cn - Epye eqieen

ti inded: teni speifiin

F f teni Pp, teni

sede

(3) Ve 3 : Pie pp - Pied bi

f Qniie, e Pie sede

nd F f Pie Pp

(4) Ve 4 : Dwing

Iniiy ny e teni Pp wee e

pened. teni Pp f e iddewi e n niy epnive

wee ejeed. If neey, ifiin

f e teni Pp wee g

n nge in e pie ne

e id, ffeed peied. a e end

f e evin f teni Pp

nd fe eeiving e ppv f JIca

ee idde wee deeined eing

qified end e id pening f e

Pie Pp.

Japan International Cooperation Agency (JICA) which funded the BWSSB (II) Project

requires that the procurement of goods and services in its-funded project is done

in accordance with its Guidelines for Procurement under JICA ODA Loans. The

JICA considers that in most cases, International Competitive Bidding (ICB) is the

best method.

The author describes the procurement process of the BWSSB (II) Project

Anil Joshi


18/20


Bid Evaluation

() te ppe f id evin i

pe id wi nf

e eni peifiin nd e

epnive e idding den

n e i f ei eved .

() bid evin e nien wi

e e nd ndiin in e idding

documents. To the extent practicable,factors other than price are expressed

in ney e pe iei peified

in e idding den, given

eive weig in dne wi e

evin pviin in e idding

den.

Award o Contract

Deied ep n e evin nd

pin f id wi en n wi

deeinin f e we eved idw ed wee peped. te n i

e wded e idde we id i

deeined e e we eved id

Wen jin vene i wded cn

pne e jiny nd evey

responsible for the execution of the whole

cn. teefe i w n epe

divide e n nd w e

ee f e fi epey e

n f divided pin.

ooo

Biology meets EngineeringOpportunities and Implications

a sein n e ee f e inein f Engineeing wi bigy w ed,

jiny y tcE nd Vigini te, usa, n 07 m 2009, in mi. 25 piipn

nd 10 inviee f vi ffie

ended. te Vie Peiden f

oe & Inenin affi, D

Jn E Dey, Pfe nd hed,

Engineeing siene & meni, D

Iw k Pi nd aie Pfe,

Engineeing siene & meni, D

m a see f Vigini te

nded e sein. In ddiin

e peenin y e Vigini

te pfe, e piipn

wee invved in vey ineeing te Wiing aignen, Diin nd

Peenin. F e gve ei peenin.

te nep f e bigy eeing Engineeing i ny pee nd e in bigy peen en nd wy f

Engineeing. E.g. n ee gw n ee, i give fe, wee we in e fi. t i n ro pe in ee. te

eve f d n ge we. Wy? te nwe wi yied ny engineeing ppiin f n need; ie e wind ied

f veie.

Dr Ishwar K Puri, Dr Mark A Stremler and Dr John EDooley listening to the presentations

A very animated discussionollowed the presentations

Nano t e c hno lo g y Semi nar

tcE cning Enginee liied, mi nd Vigini te, usa jiny gnized sein n Nnengy-oppniie nd Ipiin n 17 & 18 oe, 2008 in mi. te Ing sein w ed n 17 o 2008nd w we ended y digniie f vi t nd nn-t cpnie nd pfe f Vigini te. tediingied geing w ddeed y tcE cin, m. sy Gp nd cEo & mD m. a P m.

te sein n 18 o 2008 w ended y 26 enginee f vi diipine nd ffie f tcE nd eig piipnf e t nd nn-t pnie nd Vigini te ani. tee wee peenin y e Vigini te pfe.a, e piipn wee invved in ce sdy diin nd peenin.

Mr. Syamal Gupta Mr. A P Mull


19/20


The Town Hall Meetings were started in 2007 to convey to all employees frst hand regarding the past, present

perormance o the company and uture scenarios or more specifcally the targets, achievements, goals and

expectations o the organization. The Meeting provides a platorm to increase the interaction and thus the

mutual understanding o all on common issues. The Meetings are conducted at locations where a signifcant

number o employees rom the design ofce and the adjacent construction sites can attend and participate

The frst Town Hall Meeting (THM) this year, i.e. fnancial year 2008-2009, was organized in January 2008 and

subsequently at six other locations. THM is also a orum where suggestions are invited rom the audience and

discussions take place between a panel o senior managers and the audience.

The THM is where the Company addresses the aspirations o the stakeholders. The THMs have been greatly

welcomed by the employees at all the locations.

Town Hall Meetings

General audienceManagers panel seated on dais Interaction rom audience

His Excellency the President of Zambia, Mr. Bwezani Rupiah Banda, visited

Kariba North Bank Extension Hydro Power Project Site for the inauguration

eeny, n 06 m 2009. Pje mnge m. G l k (ene) i

ie e Peiden ppeiin wd.

Maharashtra Governor His Excellency Shri S C Jamir (second from right)

peening e ceifie f mei m. J P hn, n 26 sep 2008.

snding ng ide m. hn e m. b m Ni nd D. bi Pe(extreme left).

tcE g innvin in pn deign nd engineeing f e

nfe f Diied Fy aid. te new deign, e pi-inenive,

i envinen-fiendy nd n e in ving in enegy nd we.

In egniin, Indin cei cni wded ceifie of mei F

Excellence In Chemical Plant Design and Engineering for 2007 to TCE

cning Enginee liied, mi.


20/20

REG. NO. MAHENG/2003/10412

TCE-QSTP-LLC

TCEs Subsidiary at the Technology Park, Doha, Qatar

tcE eied i idiy pny in Q,ney: tcE QstP-llc, Q siene & tengyPark, Free Zone. TCE will carry out major applied researchnd devepen eed enegy, we, eiiene, devepen f new fwe, deingiviie, eein nd e p f univeiy eedee w eed nnengy, enining, eni ining, e.

te QstP w ffiiy inged n 16 m 2009 yhi higne sei hd in kif a-tni nd

he higne sei mz in Ne a-mined. tcE i e ny Indin pny ng eleading Global companies like Shell, Exxonmobil, GE, Virgin Health, Total, Voda Phone, EADS, Shell,cnPiip, Q Pee, e. w e pne in e QstP.

tcE QstP-llc i n e eeing gp f cpe Innvin ndEnepeneip Pg (cIEP).

TCE is already executing assignments, including Specialists Services ine e f eei engineeing Dd r lffn, f cncing sewe Pje-II f Q Pee, deign f vejeed pee nd nd ndiin, f a udeid,Pge 4E, f V ld. D, Q, seein f Pje teing sie QstP, sewge teen nd Dip Pn f new wnip;ney bw ciy, eing deveped y bw re Ee cpnyn e i f D.

bangalore_water_supply_sewerage_oct_09

Documents