TFNTFC

Nanomaterial

B-va

lue

A-value

Higher Rejection Membrane

Lower Energy Membrane

Jw=A(∆P-∆π)Js=B∆C

LG SW 400 SR 400 (37) 6,000 (22.7) 99.7 99.85 93 28 or 34

LG SW 440 SR 440 (41) 6,600 (25.0) 99.7 99.85 93 28

LG SW 400 GR 400 (37) 7,500 (28.4) 99.7 99.85 93 28 or 34

LG SW 440 GR 440 (41) 8,250 (31.2) 99.7 99.85 93 28

LG SW 400 R 400 (37) 9,000 (34.0) 99.7 99.85 93 28 or 34

LG SW 440 R 440 (41) 9,900 (37.0) 99.7 99.85 93 28

LG SW 400 ES 400 (37) 13,700 (52.0) 99.6 99.80 89 34

LG SW 440 ES 440 (41) 15,070 (57.0) 99.6 99.80 89 28

10

• A dedicated PV for the qualification program• Minimum of one (1) year of operation if initial flux is acceptable• Specific Flux above 0.085 gfd/psi• Maintain 55% Recovery• Monitor Permeate Water Quality• One (1) standard CIP and one (1) aggressive CIP

RO Membrane Qualification ProgramOperating Parameters and Cleaning In Place

Parameter Standard Cleaning Aggressive Cleaning

Solution(1) 2% (wt./wt.) STP(2)

0.2% (wt./wt.) DDBS(3)3% (wt./wt.) STP(2)

0.3% (wt./wt.) DDBS(3)

Cycling 30 min. circulate and 60 min soak (repeat three times)

30 min. circulate and 60 min soak (repeat three times)

Flow rate 38 – 39 gpm (8.6 – 8.9 m3/hr) 38 – 39 gpm (8.6 – 8.9 m3/hr)pH 11.0 ± 0.5 12.0 ± 0.5

Temperature 90 – 100 °F (32.2 – 37.8 °C) 90 – 100 °F (32.2 – 37.8 °C)(4)

(1). Solutions made up using RO product water(2). Sodium tripolyphosphate LD light density (or equivalent) (3). Sodium dodecylbenzene sulfonic acid (or equivalent)(4). LG had requested the Client to perform the aggressive CIP at ambient temperature (28-30 °C) when cleaning with pH 12.

0.04

0.08

0.12

0.16

0.2

gfd/

psi

Specific Flux

LG CIPNon-TFN CIPFull scale CIPFull Scale = Hydranautics ESPA2-LD, Non-TFN: PA BWRO with 34 mil spacer

Full Scale Stage 1

Non-TFN

LG BW 400 ES

Target Specific Flux > 0.085 gfd/psi

0.0%

0.5%

1.0%

1.5%

2.0%

Mar-16 Apr-16 Jun-16 Aug-16 Oct-16 Dec-16 Feb-17 Apr-17 Jun-17

%

Operating Date

Normalized Salt Passage

LG CIPNon-TFN CIPFull Scale CIP

Based on Average Feed Cond. ±1,700 µS/cm, Target Salt Passage < 3.5%

LG BW 400 ES

Full Scale Stage 1Non-TFN

Membrane PerformanceLG BW 400 ES Targeted Permeate Organic Carbon

0

0.05

0.1

0.15

0.2

6/20/16 8/30/16 9/16/16 3/13/17 3/16/17 3/27/17 3/27/17(2nd

Sampling)

7/27/17 8/17/17

ppm

Sampling DateFeed TOC = 5 – 10 ppmTarget Permeate TOC < 0.5 ppmMDL (Method Detection Limit) = 0.0331 ppm

Standard CIP on 3/15/17

Aggressive CIP on 8/1/17

< MDL < MDL< MDL < MDL < MDL

Membrane PerformanceLG BW 400 ES Targeted Permeate Total Nitrogen

0

0.5

1

1.5

2

6/20/16 8/30/16 9/16/16 3/13/17 3/16/17 3/27/17 3/27/17 (2ndSampling)

7/27/17 8/17/17

ppm

Sampling Date

Permeate Total Nitrogen TKN nitrite + nitrate

Feed TN = 11 – 16 ppmTarget Permeate TN < 5.0 ppm

Standard CIP on 3/15/17

Aggressive CIP on 8/1/17

Silicon Valley Advanced Water

Purification Center

El Segundo

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0 4 8 12

TOC

*, pp

m

Ozone Dose, ppm

Hydranautics CPA5-LDDow BW30XFRLE400-34Hydranautics ESPA2Lanxess B400FR ASDLG BW400AFRToray TM620D-400

10111213141516

0 1000 2000 3000 4000 5000 6000

gfd

Run Time, hours

System Flux

25.1

20.2

10.9

0

15

30

Comp A Comp B LG BW AFR

nN

Break Tank

CIP Tank

CFHPP 1

HPP 2

Booster/ CIP Pump

Train 1

Train 2

Back

to F

eed

Tank

From Feed Tank

Chemical Dosing

Control Panel / HMI

Local PC Remote PC

Wi-Fi