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MEMBRANE CLEANING COST EFFECTIVE SOLUTION

Kimberlite Chemicals India Private Limited

Kimberlite Chemicals

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Over view of the Presentation

Kimberlite an introduction of production &

R&D Lab

Types of Membrane fouling

Basic chemistry of membrane fouling

General Membrane Cleaning procedures

Kimberlite cleaning solution

Advantages


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Vision

With the vision to be a

leading, globalspecialty chemicals

company in the world



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Mission

We satisfy our customers by delivering

results through quality chemical products

and services. Our desire to grow drives ourpassion to win in the marketplace. With a

unified, economical operating structure, we

will remain competitive across specialty

Chemicals business and in every geographic

region.



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Values

We act with integrity and honesty.

We focus on customer .

We drive innovation and results by

understanding the market and its opportunities. We are committed to the values of responsibility,

sustainability and transparency.

We create safe and health-conscious work

environments, require compliance and embraceenvironmental stewardship.



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Company overview

Established in 1997

Operations in 3 countries

India,

Singapore and

UAE

More than 500 Clients in 18 Countries

Australia, New Zealand, Spain, Chile, Argentina, SouthAfrica, Turkey, Kuwait, Malaysia, Mauritius, Kenya,

Bangladesh, Thailand, Singapore, Oman, Bahrain,

Philippines, UAE and India



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Head quarters : Bangalore, INDIA



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Production Unit


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Manufacturing & R&D facility at Malur, Karnataka,INDIA


Liquid Products 16 tons per Shift

Powder Products 6 tons per shift

PRODUCTION CAPACITY


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Laboratory for Q.C and R & D

Q.C and R&D facility at Malur, Karnataka,INDIA



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Ware HouseKimberlite Chemicals


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Industries we serve with our Specialties

Water /waste water treatmentReverse Osmosis / Desalination

Sugar

Paint / Coatings / Dyes & Inks

Biocides / preservatives

Construction

Mining

Leather



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Base Line Products

Acrylic Dispersing Polymer

-Acrylic Homo Polymers

- Acrylic Co-polymers

-Acrylic Ter Polymers

Non Oxidising Biocides

-Di thio Carbamate Based

-Quaternary Ammonium

-Isothiozoline based

-DBNPA Based



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Main Line of ProductsFormulations

Membrane Treatment and Cleaning Chemicals

CoolingWater Treatment

Boiler Water TreatmentSugar Process

De-foamers

MiningPaint Additives

Construction Chemicals



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Quality

ISO 9001-2008 Certification from TUV

ANSI /NSF 60 certification for Membrane Antiscalants

from UL )Underwriters Laboratories) , USA

Non-toxicology certification from National Toxicology

Center, Pune INDIA. For Sugar Process Products

Membrane Manufacturers Approval Saehan

Membranes, Korea



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Membrane Treatment Products

1. Antiscalants

2. Cleaners

3. Biocides

4. De-chlorination

5. Coagulants & Floculants


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LAB FACILITY AT AWRTC


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LAB FACILITY AT AWRTC


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Membrane fouling

Accumulation of certain constituents in the feed water on thesurface of the membrane or in membrane matrix.

Membrane fouling is a complicated phenomenon andtypically results from multiple causes.

Electrostatic interactions occur among functional groups ofmembranes, fouling materials and water, primarily throughdissociation which strongly depend on the pH, ionic strength,and concentrations of multivalent cations in the solution

Hydrophobic/ hydrophilic interactions are functions ofstructure similarities between membranes and foulingmaterials


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Type of Membrane Fouling

Generally recognized by four categories &

mechanism of fouling.

inorganic fouling/scaling,

particle/colloids fouling,

microbial fouling,

organic fouling.


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Inorganic Fouling/Scaling

accumulation of inorganic precipitates such as metal

hydroxides, and scales on membrane surface or

within pore structure.


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Inorganic Fouling/Scaling

RO and NF membranes reject inorganic species.

Those species form a concentrated layer in the

vicinity of membrane-liquid interface - aPhenomenon referred to

concentration polarization.


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Particulate/colloid Fouling

Algae, bacteria, and certain natural organic matters

fall into the size range of particle and colloids.


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Particulate/colloid Fouling

In most cases, particles and colloids do not

really foul the membrane because the flux

decline caused by their accumulation on themembrane surface is largely reversible by

hydraulic cleaning measures such as backwash

and air scrubbing.


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Microbial/Biological Fouling

formation of bio films on membrane surfaces. Once bacteria

attach to the membrane, they start to multiple and produce

extra cellular polymeric substances (EPS) to form a viscous,

slimy, hydrated gel.Kimberlite Chemicals

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Organic Fouling

Organic fouling because of relatively high natural organicmatters (NOM) in source water.

For source water high in NOM, organic fouling is believed to bethe most significant factor contributed to flux decline


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Organic Fouling

Surface Waters:Natural Organic Matter (NOM)

Mostly humic substances

Complex, poorly defined anionic macromolecules

Wastewaters:Effluent Organic Matter (EfOM)

Soluble microbial products (polysaccharides, proteins)

Other organic matter


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Membrane fouling


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Membrane fouling


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Effects of Operating Strategies on

Membrane Fouling

Type of fouling Effects of Operating Strategy

Hydraulic

Cleaning

Feed

Chlorination

Feed

Acidification

Chemical

Cleaning

Inorganic

_ _ ++ ++Particulate ++ _ _ ++Microbial + ++ +* ++

Organic _ + _ ++

Note: - No effects or have negative effects.

+ Some positive effects, ++ Positive effects

* in conjunction of feed chlorination.Kimberlite Chemicals

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Membrane Fouling

Membrane fouling and cleaning is to

understand interactions

a) between fouling materials and membrane,

b) between cleaning chemicals and fouling

materials,

c) between cleaning chemicals and membrane,

d) among the fouling materials.


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Functionalized Colloidal Probe

Surface charge of membrane media isthe results of ionization of particularfunctional groups existed on themembrane surface (e.g., carboxyl andamine).

Ionization of a functional group &surface charge of a particularmembrane depends on pH.

On the other hand, colloids, particles,and dissolved organic matters typicallycarry negative charges at the pH ofnatural water.

Therefore, there is a tendency ofelectrostatic repulsion betweenmembranes and those constituents.


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Foulant Interactions in Membrane Filtration


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Organic Fouling

Organic Foulants: Humics

Model structure of humic acid


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Effect of Divalent Cations on RO

Humic Acid Fouling: Mg2+ vs. Ca2+


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Bridging Effect of Ca2+


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Effect of Divalent Cations on

Fouling: Other Divalent Cations


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Conceptual Model of Membrane

Fouling and CleaningFor membrane fouling dominated by the adsorption of natural organic

matter, and dominated by microbial causes to a less extent, the fouling and

cleaning can be illustrated by a simple conceptual model as


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Membrane fouling causes

Calcium carbonate scale Sulphate scale of Calcium, barium and strontium

Metal oxides (iron, manganese, copper, nickel,

aluminium, etc

Polymerized silica scale

Inorganic colloidal deposits

Natural organic colloidal deposits

Biological deposits


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Effect of non maintenance

Deposits will form on the membrane surface

Deposits become harder and tough to clean

RO membrane efficiency will come down drastically

Pressure drop across the membrane

Reduction of out put flow

Membrane life reduction


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Advantage of our cleaning solution

Rapid and efficient membrane cleaning

High flux and output levels

Minimal discharge of cleaning liquids Low consumption of water needed for membrane

cleaning operations (low foaming formulation)

Surfactant based formulation will lower the surface

tension loosening of the scale


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General protocol for cleaning

1. Acidic soak/circulation at temp.50-55 deg.C for 10

15 minutes. This will help to loosen any of the iron

and calcium scale present on the membrane, then

purge with water2. Alkaline solution soak for another 10 15 minutes to

loosen the organic scales

3. Subjecting the membrane with high velocity low

foaming alkaline solution for 10 15 minutes to

flush out the loosened scale


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Kimberlite product

(Tacelene Chem 8209)A product with a combination of

Alkali, Complexing agent,surfactant,etc


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Product Specification and test results

Name of the product Tacelene Chem 8209

Analytical report no. SKPL 0911002 / dt. 12/11/09

Batch No 002

Mfg. Date 11/11/09

Product Test ReportDescription Result Specification

Appearance Fine powder Fine powder

Colour off white White to off white

pH (1% solution withwater)

12.7 12.00 13.00

Solubility in water Completely

soluble

Completely

soluble in water


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Pilot Study on Membranes


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Tacelene Chem 8209

Permea e Reject % Recovery Feed Permeate %Reduction Permeate Reject % Recovery Feed Permeate %Reduction

001 2 min 65 600 9.8 1220 430 65 92 600 13.3 1220 380 69

5 min 65 600 9.8 1220 430 65 108 600 15.3 1220 320 74

10 min 65 600 9.8 1220 430 65 155 600 20.5 1220 210 83

15 min 65 600 9.8 1220 430 65 180 600 23.1 1220 185 85

20 min 65 600 9.8 1220 430 65 202 600 25.2 1220 140 89

Permeate Reject % Recovery Feed Permeate %Reduction Permeate Reject % Recovery Feed Permeate %Reduction

002 2 min 60 600 9.1 1220 480 61 65 600 9.8 1220 435 64

5 min 60 600 9.1 1220 480 61 92 600 13.3 1220 387 68

10 min 60 600 9.1 1220 480 61 126 600 17.4 1220 305 75

15 min 60 600 9.1 1220 480 61 165 600 21.6 1220 215 82

20 min 60 600 9.1 1220 480 61 198 600 24.8 1220 122 90

Permeate Reject % Recovery Feed Permeate %Reduction Permeate Reject % Recovery Feed Permeate %Reduction003 2 min 56 600 8.5 1220 455 63 68 600 10.2 1220 405 67

5 min 56 600 8.5 1220 455 63 100 600 14.3 1220 364 70

10 min 56 600 8.5 1220 455 63 138 600 18.7 1220 298 76

15 min 56 600 8.5 1220 455 63 175 600 22.6 1220 205 83

20 min 56 600 8.5 1220 455 63 210 600 25.9 1220 152 88

R.O

Membrane #

Time of

treatment

Before cleaning After cleaning (2.5% inDM water)

Flow rate (ml/min) TDS mg/l Flow r ate (ml/min) TDS mg/l

Pilot study of the cleaning powder

R.OMembrane # Time oftreatment

Before cleaning After cleaning (2.5% inDM water)

Flow rate (ml/min) TDS mg/l Flow r ate (ml/min) TDS mg/l

After cleaning (2.5% inDM water)

Flow rate (ml/min) TDS mg/lR.O

Membrane #

Time of

treatmentFlow rate (ml/min) TDS mg/l

Before cleaning


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Documents

Kimberlite_160310