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PROJECT PROFILE SERIES #47

Seawater Reverse Osmosis Plant for India’s First

4,000 MW Ultra Mega Power Projec t

The Fac ility  

India’s first Ultra Mega Power Project (UMPP) atMundra in Coastal Gujarat, a 4,000 MW coal fired

plant, is owned by Coastal Gujarat Power Limited

(CGPL), a Ta ta Power group c ompany. Ta ta Pow er is

India's largest private sector power utility with an

insta lled ge neration c ap ac ity of o ver 2,300 MW. The

CG PL UMPP, aw arde d on a 20 yea r BOO T basis, will

be India’s first private sector power project using

supercritical boiler technology; and is expected to

be the most energy efficient p lant in India.

CGPL will draw seawater from the Mundra coast for

various utilities and for their main boiler. Aquatech

has been awarded the contract for executing the4,622 GPM (25,200 m3 / day) (p erme ate ) capac ity

Seawate r Reverse Osmosis Plant (SWRO) on EPC

Basis. Aquatech is honored and very proud to be

associated with the First UMPP going on stream in

the c ountry.

Aqua tech International Corporation One Four Coins Drive; Canonsburg, PA 15317

T: 724-746-5300 F: 724-746-5359 aic @aq uate c h.co m w ww.aqua tec h.co m

The Cha llengeThe c ha lleng e fo r Aqua tec h is 40% pe rme ate

rec ove ry o n d iffic ult feed wa ter, with Tota l Dissolved

Solids (TDS) conte nt varying from 42,000 mg/ l toThe SolutionOne of the larger desalination projects to come up

in Ind ia in rec ent yea rs, the Aqua tec h p lant, utilizing

SWRO tec hno logy, will prod uc e 25.2 MLD o

desalinated water for various end user applications

A part of desalinated water will further be treated

through a BWRO system to produce 660 GPM (3,600

m3 / day) of perme ate for using in the up stream

mixed beds demineralization plant for boiler feed

application.

The Aq ua tec h SWRO syste m c onsists of a 2 x 6,16

GPM (2 x 1,400 m3 / hr) p retrea tm ent p lan

comprising of Lamella Clarifiers followed by two

sta ge filtrat ion using Dua l Med ia a nd Pressure Sand

Filters. The SWRO system c onsists of four streams o

SWRO banks followe d by tw o banks of BWRO.

Aquatec h also has a ma ndate to c arry out the O&M

for a p eriod of Three years a fter com missioning o

the CGPL projec t.

46,000 mg/l and a maximum feed wate

temperature of 950F (350C). This ha s however no

deterred Aquatech from committing stringen

trea ted water qua lity o f less tha n 450 mg / l TDS level

a t the out let o f SWRO a nd 5-7 mg / l TDS levels a t the

outlet of Brac kish Wate r Reverse Osmosis System

(BWRO).

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 FEED SEA WATER ANALYSIS

PROJECT PROFILE SERIES #47

PROCESS FLOW DIAGRAM

Feed Seawa ter Ana lysis

Parame ters Units Max. Values

Co lor - Co lorless

Suspended Solids mg/ l 1,000

Sod ium as Na mg / l 14,490

Ca lcium as Ca mg / l 1,990

Ma gne sium as Mg mg / l 510

Tota l hardness as Ca CO 3 mg/l 7,100

Turb idity NTU 170

Chlorides as Cl mg / l 23,500

Sulpha tes as Ca CO 3 mg/l 4,475

Bica rbo nates as Ca CO 3 mg/l 990

Potassium mg / l NIL

TDS mg/ l 46,000

Iron as Fe mg/ l NIL

COD mg / l 170

BOD mg / l 50

Co lloida l Silica as Ca CO 3 mg/l NIL

Silica Rea c tive as Ca CO 3 mg/l 3

Od or - Od orlessTOC mg / l 2

pH - 7.8

Temperature Deg C 34

Treated Wate r Qua lity

Provided the e quipme nt is op erated as per the

instructions issued by Aq uatec h the averag e wa ter

quality w ill not exceed the follow ing limits:

Permea te Wate r Com po sition after First Pass RO

pH: 5.5 – 6.5Tota l Suspe nde d: Below ded uc ta b le Limit

Tota l Dissolve d : Less than 500 ppm

(When fe ed TDS is 46,000 pp m

Less tha n 450 pp m

(When fe ed TDS is 42,000 pp m

Perme ate Wate r Com position a fter Sec ond Pass RO

pH: 5.0 – 6.0

Tota l Dissolve d: Less than 7 ppm

(When fe ed TDS for 1st Pass R

is 46,000 pp m)Less than 5 ppm

(When fe ed TDS for 1st Pass R

is 42,000 pp m) 

PROCESS FLOW DIAGRAM