KENT RO WATER PURIFIER

1

CRITICAL

REVIEW

Presented By:-

LOKESH SAINI

DISCLAIMER

THIS REVIEW IS JUST THE

PART OF MY M-TECH COURSE. I AM

NOT INTENDED TO CHALLANGE THE

CONCEPTS AND PRINCIPLES OF

WORKING USED BY KENT RO

SYSTEM LTD.LOKESH SAINI

2

MODEL REVIEWED

M. NO. 11007

KENT GUARD MINERAL

RO WATER PURIFIER

Kent Instruction Hand

Book

3

FLOW DIAGRAM USED

Kent Instruction Hand

Book

4

RO Membrane

UV Unit

TDC Controller Bypass

Sediment Filter

Post C Filter

Ultra Filtration

Carbon filter

SALIENT FEATURES OF KENT GUARD

DOUBLE PURIFICATION BY RO+UV PROCESSES.

IN-BUILT TDS CONTROLLER THAT ALLOWS ADJUSTEMENT OF TDS LEVEL OF PURIFIED WATER.

SUITABLE FOR PURIFICATION OF BRAKISH/TAP WATER/MUNICIPAL CORPORATION WATER.

WALL MOUNTED DESIGN; BEST SUITED FOR INDIAN HOMES AND OFFICES.

FULLY AUTOMATIC OPERATION, COMPUTERISED.

FILTER CHANGE ALARM.

U.V FAIL ALARM.

Kent Instruction Hand

Book

5

TECNOLOGY USED 6

1.REVERSE OSMOSIS

Water pressure isapplied to the concentratedside, forces the process ofosmosis into reverse. It isalso known as hyperfiltration. Under enoughpressure, pure water is“squeezed” through themembrane of pore size0.0001µm fromconcentrated salt side todiluted side.

Kent Instruction Hand

Book

Contd….7

UV PROCESS

UV rays, has shorter wave length (higher energy)

than the visible light, penetrate into the micro-

organisms, are absorbed by the DNA of the pathogen

in the water. The DNA is altered in such a way that

pathogens cannot reproduce itself.

Kent Instruction Hand

Book

REVIEW8

COST WISE9

Capital cost - Rs 14890/- (Amazon.in)

Operational Cost- 1) Power Cost

•UV Power -11W

•Booster Pump Voltage – 24V DC

Total Power Consumption- 60 W

(Assuming 4Hrs daily run @15ltr/hr & Rs7/unit)

Power Charges for one Yr 7x60x365 = Rs153/Yr

1000

Cont.

Contd..10

Water production and distribution cost @Rs32/kl(As per PHED GoR)

For One Yr 60x365x32 = Rs700/Yr

1000

Maintenance Charges

UV Bulb @Rs 300/Year (amazon.in)

Booster Pump @Rs 1500/5Year or Rs300/Yr

Membrane and other cartage costs @4000/Yr

Annual Service Charge @ 3500/Yr

Total maintenance charge @Rs/Yr is Rs8100/Yr

11

If We take depreciation @10% i.e Rs1490 /Yr

Chargers of RO Purifier/Yr is

Rs1490+Rs153+Rs700+Rs8100=Rs10443

Total Water Produced 60x365=21900lt

Cost per lt is 10443/21990= 47 paisa per lt

Contd..

Quality wise12

It produces almost distilled water.

It removes all pathogens, viruses, cysts and

minerals( mono valent ions too).

IT IS DESEASE

FREE GOOD

DRINKING

WATER

DEMERITS OF KENT R.O.13

It requires electricity to operate, useless in areas where power is erratic.

High capital cost & maintenance cost.

Water rejection is high,40-70%. & Reject is highly salty.

It bypass some water before RO membrane to control theTDS level. This is useless if water is contaminated withharmful minerals like Arsanic, Lead, Hg or Cadmium.

Membrane removes almost all pathogens/viruses, no need ofUV disinfection.

If we consume this water for long time and then we use nonRO water , chances of getting ill.

It does not gives residual disinfectant effect.

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1. The ground water normally does not contains pathogens

and viruses, hence there is no need of UV disinfection

unit.

2. TDS controller can not maintain the desired level of useful

minerals(Ca & Mg). If these are added externally like in

Bisllary Brand bottled water, adds extra cost.3. It is not economical and wise activity to purify surface water.

It can not afford by common peoples.

4. It can be used only where surface water source is

available at long distance and ground water is not as per

standards.

5. It is advisable to filter small quantity of water with

arrangement of reject in the low level use.

AS PER IS:10500, DRINKING WATER PARAMETERS*JAIPUR CITY PARAMETERS

S.No. Characteristics Acceptable

Limit

Permissible

Limit

1 Turbidity, NTU 1(Within Limit)* 5

2 TDS,mg/lt 500(100-300)* 2000

3 Ca,mg/lt 75 200

4 Cl,mg/lt 250 1000

5 F, mg/lt 1(Within Limit)* 1.5

6 Mg, mg/lt 30 100

7 Nitrate, mg/lt 45(Higher)* No relaxation

8 Total hardness, mg/lt 200(Within Limit)* 600

9 Cd, mg/lt 0.003 No relaxation

10 Pb, mg/lt 0.01 No relaxation

11 Hg, mg/lt 0.001 No relaxation

12 As, mg/lt 0.01 0.05

15

‘0’

Coliform

16

IN JAIPUR

NO NEED

OF RO

PURIFIER

17

FIRST DECIDE THE SOURCE OF

WATER, ANALYS IT AND WHAT IS

THE QUALITY DESIRED?

STORE RAIN

WATER

FOR DRINKING

REFERENCES18

1. Kent Grand, Instruction Hand book, F:\Lnk_Chandresh_2015_BOX &

MANUALS\KENT\Manual\KENT Grand Manual_2015.

2. http:///www.achawater.com/RO-disadvantage-minerals-wastage.html.

3. www.safewater.org.

4. http://articles.economictimes.indiatimes.com/2011-10-31/news/3034224...

5. www.amazon.in