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The Coagulant and Flocculant for alternative. Present to Provincial Waterworks Authority By Behn Meyer Techno-Chemical. Behn Meyer Group Since 1840. Group History Behn Meyer today Behn Meyer Thailand Behn Meyer Chemical (T) Co., Ltd. Behn Meyer Techno-Chemicals (T) Co., Ltd.

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The Coagulant and Flocculant for alternative

Present to

Provincial Waterworks Authority

By

Behn Meyer Techno-Chemical


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Behn Meyer GroupSince 1840

  • Group History

  • Behn Meyer today

  • Behn Meyer Thailand

  • Behn Meyer Chemical (T) Co., Ltd.

  • Behn Meyer Techno-Chemicals (T) Co., Ltd.


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1. Group History

  • Milestones

    • 1840 founded as Behn Meyer & Co. in Singapore

    • 1857 foundation of Arnold Otto Meyer in Hamburg

    • 1914 Singapore, Malaya, Indonesia, China, Phillipines,

    • 1955 re-incorporated in Singapore as Behn Meyer & Co. (Pte.) Ltd.

    • 2001 Arnold Otto Meyer re-named Behn Meyer (D) Holding AG &Co

  • Milestones Behn Meyer Thailand

    • 1907 founded under the name of Behn Meyer & Co.

    • 1978 foundation of Behn Meyer Engineering Co., Ltd.

    • 1982 foundation of Behn Meyer & Co. (T) Ltd.

    • 2002 foundation of Behn Meyer Chemical (T) Co. Ltd.

    • 2007 BME re-named Behn Meyer Techno-chemicals (T)


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The focus of the group today is on the supply and distribution of specialty products, representing worldclass manufacturers or from its own production.

2. Behn Meyer today


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2. Behn Meyer today distribution of specialty products, representing worldclass manufacturers or from its own production.

The group‘s business lines can be categorized into three main groups:

Chemical Agricare Trading

  • Countries

    • Singapore

    • Malaysia

    • Thailand

    • Indonesia

    • Vietnam

  • Myanmar

  • Cambodia

  • Germany

  • The Netherlands


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3. Behn Meyer Thailand distribution of specialty products, representing worldclass manufacturers or from its own production.


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  • The new alternative coagulant distribution of specialty products, representing worldclass manufacturers or from its own production. for water treatment

    Aluminum Chlorohydrate

    By

    Gulbrandsen Technologies,Inc

    Clinton,NJ 08809 USA


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What Are Coagulants ? distribution of specialty products, representing worldclass manufacturers or from its own production.

Coagulants are chemicals, typically salts of iron or aluminum, that cause suspended solids in water to agglomerate into larger particles which can then be removed by physical separation methods.


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TRADITIONAL distribution of specialty products, representing worldclass manufacturers or from its own production.

Aluminum Sulfate (alum)

Aluminum Chloride

Ferric Sulfate

Ferric Chloride

LAST 15-20 YEARS

Polyaluminum Salts

Chlorides

Chlorosulfates

Silica Sulfates

ACH

Polymer Blends

Common Coagulants


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Typical coagulants distribution of specialty products, representing worldclass manufacturers or from its own production.


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Aluminum Chlorohydrate distribution of specialty products, representing worldclass manufacturers or from its own production.

  • ACH is a highly conc.Solution of polyaluminum hydroxychloride by having a highest Al conc. ( 23% Al2O3 )

  • The basicity of ACH at 83% is also the highest available for any polyaluminum based solution.


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Aluminum Chlorohydrate distribution of specialty products, representing worldclass manufacturers or from its own production.

  • The highly polymerized species in ACH have much higher cationic charge than Aluminum in standard salt.

  • ACH can offer both higher level of performance and lower dosages.


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PAC / ACH Basicity distribution of specialty products, representing worldclass manufacturers or from its own production.

  • The polymeric aluminum species present are determined by the degree of neutralization, which is usually reported as BASICITY:

    % Basicity= [OH] / (3 x [Al]) x 100

  • BASICITY (polymerization) is increased by replacing chloride ions with hydroxyl ions during manufacturing.


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Why PACl or ACH? distribution of specialty products, representing worldclass manufacturers or from its own production.

  • The primary functional benefit of PACl’s / ACH vs traditional coagulants like Alum is the higher charge on the aluminum.


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Objective of Coagulant distribution of specialty products, representing worldclass manufacturers or from its own production.

“ The Goal of using Coagulants in Water Treatment is the removal of Suspended Solids and soluble and insoluble organic material.”


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Suspended Solid distribution of specialty products, representing worldclass manufacturers or from its own production.

Suspended Solids are stable in solution due to small size / low density and negative surface charge.


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Effects of Solids distribution of specialty products, representing worldclass manufacturers or from its own production.

Potable Water

  • Turbidity

  • Taste & Odor

  • Cryptosporidium and Giardia

    Waste Water

  • TSS - Total Suspended Solids

  • Corrosion (Erosive and biological)

  • Insoluble BOD

  • Insoluble Phosphorus


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TOC distribution of specialty products, representing worldclass manufacturers or from its own production.

  • Organic acids; humic acid, fluvic acid, etc.


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Surface Charge distribution of specialty products, representing worldclass manufacturers or from its own production.

Negative Surface charges on particles help stabilize them in aqueous solution.

The higher the charge to surface area ratio, the more stable the particle


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Particle Size Matters distribution of specialty products, representing worldclass manufacturers or from its own production.

Particle Classification mm mm/s

Gravel 1.0 100

Coarse Sand 0.4 42

Sand 0.1 8.0

Fine Sand 0.02 0.62

Silt 0.004 0.025


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What are the Benefit of the Polymerization in PAC / ACH? distribution of specialty products, representing worldclass manufacturers or from its own production.

  • Increasing polymerization means Higher Cationic charge.

  • The aluminum maintains its charge in water longer and over a wider range of conditions.


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1: Benefit of Higher Charge distribution of specialty products, representing worldclass manufacturers or from its own production.

  • Higher Charge means more effective Charge Neutralization:

    Schultz -Hardy Rule:

    C = k / Z6

    C = Concentration, Z = Charge, k = constant


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Schultz-Hardy Rule Predictions distribution of specialty products, representing worldclass manufacturers or from its own production.


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Shultz-Hardy Rule distribution of specialty products, representing worldclass manufacturers or from its own production.


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Schultz-Hardy Theory distribution of specialty products, representing worldclass manufacturers or from its own production. vs. Real Life Application

  • Real Life: Other factors effect the charge neutralization mechanism; pH, Temperature, Hydrolysis

  • The bottom line is that the higher charge on the aluminum in PACl or ACH allows it to coagulate more solids with a lower dose than a simple aluminum or iron salt.


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2: Benefit of Longer Lasting Charge distribution of specialty products, representing worldclass manufacturers or from its own production.

The aluminum chloride complex stays soluble longer than an aluminum sulfate ion


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Steps in the Coagulation Process - Simple Metal Salts distribution of specialty products, representing worldclass manufacturers or from its own production.

  • Charge Neutralization - Positive Charge on Coagulant eliminates negative charge on particles - Minimal impactdue to time factor: 10-4 seconds

  • Coagulant forms hydroxide which has a larger physical structure.

  • Mixing causes particles to collide and they begin to agglomerate.


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How Do Traditional Coagulants Work? distribution of specialty products, representing worldclass manufacturers or from its own production.

When simple Aluminum (or Iron) salts are added to water, they produce a positively charged ion:

Al2(SO4)3 >>>>>> 2 Al3+ + 3 SO42-

The positive charge can destabilize the negative surface charge on suspended particles.


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How Do Traditional distribution of specialty products, representing worldclass manufacturers or from its own production. Coagulants remove TOC?

Alum, for example, must be added until the pH falls into the range where the aluminum ion is soluble (< 5) and then removes the organic acid through charge neutralization.

Ferric chloride sometimes operates at pH < 4.

The problem is that the pH must be brought back up.


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Coagulation with PAC/ACH distribution of specialty products, representing worldclass manufacturers or from its own production.

  • The charge neutralization with simple aluminum or iron coagulants happens very rapidly; 10-4 seconds.

  • The Charge neutralization with PAC/ACH occurs over a much larger time frame – giving more time for the higher charge to destabilize the particles


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Polyaluminum Coagulants distribution of specialty products, representing worldclass manufacturers or from its own production.

  • The complex structure of Polyaluminum Chlorides are stable in water in the pH range where aluminum typically forms aluminum hydroxide.

  • The charge on the complex is then available for direct interaction with the surface charges on the particles.

  • The structure of the complex remains as part of the floc, forming a smaller but denser floc than aluminum hydroxide.


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Steps in the Coagulation Process - Polyaluminum Products distribution of specialty products, representing worldclass manufacturers or from its own production.

  • Charge Neutralization - Positive Charge on Polyaluminum Complex eliminates negative charge on particles - Primary mechanism for reaction

  • Polyaluminum Complex is bonded to the particle which helps to build floc mass though continued agglomeration

  • Mixing causes particles to collide and they begin to agglomerate.


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Why ACH works more Effectively distribution of specialty products, representing worldclass manufacturers or from its own production.

  • More of the higher charge actually goes to charge neutralization. This means less is required to remove solids.

  • Also, in the case of TOC, a large drop in pH is not required because the aluminum stays soluble long enough to destabilize the organic acids.


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Key Benefits of Polyaluminum Coagulants distribution of specialty products, representing worldclass manufacturers or from its own production.

  • LOWER DOSE - Higher Charge on Aluminum means less is needed.

  • Typical reductions in aluminum dose are

    • 30 - 60% for potable water, Higher for waste waters

  • SLUDGE REDUCTION - Lower dosage translate to less sludge, Polyaluminum sludges are easier to dewater.

  • LESS pH ADJUSTMENT REQUIRED - pH is impacted less than with traditional coagulants

  • BETTER PERFORMANCE - Higher removal rates and wider working pH range


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The new organic coagulant and flocculant distribution of specialty products, representing worldclass manufacturers or from its own production.

TANFLOC


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TANFLOC distribution of specialty products, representing worldclass manufacturers or from its own production. VEGETABLE COAGULANT / FLOCCULANT


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TANFLOC distribution of specialty products, representing worldclass manufacturers or from its own production.

Renewable resources  Forest

Without change the water characteristics

Patented product and manufacturing process


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TANAC S.A. distribution of specialty products, representing worldclass manufacturers or from its own production.

  • Base on South part of Brazil, since 1948 of producing vegetable tannin extract

  • From 260 sq.kmof land, 60 million renewable trees, the company export to 70 countries, in total 30,000 tons of Tannin extract and 500,000 tons of woodchip per year.


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ENVIRONMENTAL CARE distribution of specialty products, representing worldclass manufacturers or from its own production.

No effluent discharge

Scrubbers in the Chaminees with close loop/cycle

Filtration / separation of ash

Spent bark fuels the boiler (energy conservation)

Excess residues : ash + spent bark = organic fertilizer


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TANNIN distribution of specialty products, representing worldclass manufacturers or from its own production.


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TANNIN distribution of specialty products, representing worldclass manufacturers or from its own production.

Hoverth ( 1981) gave one of the most satisfactory definitions of tannin :

“Any phenolic compound of sufficiently high molecular weight containing sufficiently hydroxyls and other suitable group ( i.e. carboxyl ) to form effectively strong complexes with protein and other macromolecules under the particular environmental condition being studies “

Tannin can complex with Proteins, Starch, Cellulose, and Minerals.


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TANNIN distribution of specialty products, representing worldclass manufacturers or from its own production.


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TANFLOC distribution of specialty products, representing worldclass manufacturers or from its own production.

Characteristics

Organic Cationic Vegetable Polymer

Non toxic, Low molecular weight

Easy solution

Biodegradable

Consumed on the sludge

Does not change the pH

Act on a wide pH range


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TANFLOC distribution of specialty products, representing worldclass manufacturers or from its own production.

Characteristics

  • In colloidal systems, Tanfloc neutralises charges, unstabilizing them, producing flocculant and causing their sedimentation

  • Tanfloc chelates matellic ions dissolved in the water thus helping to reduce he medium’s degree of conductivity


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TANFLOC distribution of specialty products, representing worldclass manufacturers or from its own production.

Tanfloc can be used as the primary coagulant or as an auxiliary flocculation agent , being compatible with most of products sold on the market for this purpose


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TANFLOC distribution of specialty products, representing worldclass manufacturers or from its own production.

Quaternary ammonium tannate monomer


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TANFLOC distribution of specialty products, representing worldclass manufacturers or from its own production.

Quaternary ammonium tannate polymerized


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R distribution of specialty products, representing worldclass manufacturers or from its own production.

+

NH

2

CH

O

2

++

Fe

O

HO

O

TANFLOC

Chelating characteristic


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+ distribution of specialty products, representing worldclass manufacturers or from its own production.

NH

2

CH

O

2

Me

O

HO

O

TANFLOC

Chelating characteristic

R


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TANFLOC- Flocs Form distribution of specialty products, representing worldclass manufacturers or from its own production.

An irregular form , presenting a larger surface area than other flocculants with round flocs. This enable more efficient clarification with minor turbidity in final treated water


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TANFLOC - Sedimentation distribution of specialty products, representing worldclass manufacturers or from its own production.

  • Up to the floc size proportionally, small flocs result slower but more efficient clarification and obtained when dosage is too low.

  • Large floc always faster rate but clarifiction is not always satisfactory because of reduced surface area contact.

  • Formation of medium size flocs provides the optimum rate of sedimentation and clarification efficiency


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TANFLOC - Sludge distribution of specialty products, representing worldclass manufacturers or from its own production.

The sludge generate from water treatment with TANFLOC is organicand is notof environmental concern like Aluminum based flocculants. TANFLOC sludge can therefore be used as an agricultural organic compost.


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TANFLOC - Chlorinating distribution of specialty products, representing worldclass manufacturers or from its own production.

  • Base on organic product of vegetable origin, the use of chlorine should be restricted to the final stage of water treatment after sedimentation.

  • In contact with Chlorine will reduce its efficiency and result of formation of undesirable chlorination by- products


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TANFLOC - Main Fields: distribution of specialty products, representing worldclass manufacturers or from its own production.

Waste water:

Petrochemicals

Metalurgical

Mining

Foods

Pulp and paper

Drinking water


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TANFLOC distribution of specialty products, representing worldclass manufacturers or from its own production.


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TANFLOC distribution of specialty products, representing worldclass manufacturers or from its own production.


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ENVIRONMENTAL CARE ISO 14001 distribution of specialty products, representing worldclass manufacturers or from its own production.


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Behn Meyer Techno-Chemicals(T) Co.,ltd distribution of specialty products, representing worldclass manufacturers or from its own production. .189 Moo 6 Bangkok-Chonburi( New highway)Rd. Tabyao, Ladkrabang, Bangkok , THAILAND 10520tel. 0 2327 9800fax 0 2360 6076

THANK YOU


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