Organic Coagulants

Coagulants destabilize the colloidal system by neutralizing forces of various nature that ensure its stability.

Coagulation was previously performed using inorganic coagulants, such as aluminum sulfate and ferric chloride (before the advent of synthetic organic polymers in the 1960s). At first, polymer coagulants were used as an additive to inorganic coagulants for more intensive flake formation. Today, polymer coagulants are used as basic coagulants, completely or partially replacing inorganic coagulants.

Coagulants of the polymer type proved to be more economical in a wide range of processes, including sedimentation, flotation and filtration. For these processes, polymer coagulants have proven their ability to stably ensure the quality of purified water that meets the established standards, with optimum reliability, efficiency and economy.

Organic Coagulants FLOQUAT™ series

A series of polymeric coagulants FLOQUAT™ provides:

  • High cationic charge necessary to destabilize negatively charged colloidal particles and ensure rapid flocculation

  • the relatively low molecular weight and viscosity necessary to ensure a good distribution of the polymer in the treated water and cationic charges around the colloidal particles

Advanteges

Coagulants of polymeric type in comparison with inorganic coagulants have the following advantages:

  • Provide the same or better result at significantly lower doses up to 10 times

  • Work in a wide range of pH and alkalinity

  • Don’t change pH of purified water

  • Don’t afraid of chlorination

  • Don’t add dissolved metals (i.e., aluminum or iron) to the purified water.

  • Increase the rate of separation of the liquid and solid phases

  • Increase the service life of direct filtration filters

  • Remove unicellular algae

  • Minimize the volume of precipitate formed

  • Form an easier dewatered sludge

  • Reduce the cost of processing and removal of sediment

  • More convenient to prepare and use

SNF Floerger is a leading manufacturer of two main types of organic cationic coagulants:

  • POLYAMINES

  • POLYDADMAC

FLOQUAT™ FL series

Our quaternary polyamines are produced by condensation reaction of primary or secondary amines on epichlorohydrin. By controlling the sequence of monomer addition to the reactor, we can vary the molecular weight in the range of 10,000 to 1,000,000.

The specific cationic charge and binding capacity of these coagulants is determined precisely by the action of amines. Polyamines differ from other polyelectrolytes in that their cationic charge is located on the main molecular chain.

Basic properties:

  • Molecular weight from 10 000 to 1 000 000.

  • Liquid form, the concentration of 40 to 50%.

  • Location of the cation charge on the main circuit.

  • The viscosity of a 50% solution is from 40 to 20,000 cPs.

  • Resistance to chlorination.

  • Compatibility when mixed with inorganic coagulants.

  • Exceptional storage stability.

  • Possibility of using undiluted or in solution.

Technical data:
Water soluble cationic polymers in liquid form The FLOQUAT ™ series

Polymer FL 28 P1 FL 28 P2 FL 28 P3 FL 17 FL 28 P4 FL 18-40
Сharge continuity Very high Very high Very high Very high Very high Very high
Density 1,12 – 1,16 1,10 – 1,16 1,14 – 1,18 1,12 – 1,16 1,10 – 1,16 1,12 – 1,16
Approx. Brookfield viscosity (cPs) 100 – 200 200 – 400 300 – 500 600 – 1000 1000 – 4000 1300 – 2200
pH 5,5 – 8,0 4,0 – 7,0 2,5 – 3,5 4,0 – 7,0 4,0 – 5,0 4,0 – 7,0
Active substance concentration (%) 48 – 51 48 – 51 48 – 51 48 – 51 48 – 51 38 – 41
Stability (months) 24 24 24 24 24 24
Storage temperature (°C) 0 – 50 0 – 50 0 – 50 0 – 50 0 – 50 0 – 50
Freezing point (°C)) -3 -3 -3 -3 -3 -3

Packing:

plastic braided bottle 25 kg / plastic barrel 225 kg / container 1100 kg / other containers on request.

All these data are provided for information only. They can not be regarded as a specification and do not guarantee the use or any dependence on existing patents.

PolyDADMAC

FLOQUAT™ FL  45 series

PolyDADMAC coagulants (diallyldimethylammonium chloride) are synthesized from allyl chloride and dimethylamine. The reactivity of the allyl radical in DADMAC during polymerization limits the molecular weight of the polymer.

Basic properties:

  • Molecular weight from 10 000 to 1 000 000.

  • In powder or liquid form with a concentration of 20 to 40%.

  • Cation charges are located on the secondary circuit.

  • The viscosity of a 40% solution in a liquid form is 40 to 20,000 cPs.

  • Resistance to chlorination.

  • Compatibility when mixed with inorganic coagulants.

  • Exceptional storage stability.

  • Possibility of using undiluted or in solution.

Technical data:
Soluble in water cationic polymers in liquid form.

Polymer FL 45 DL FL 45 FL 45 VHM FL 45 CLV FL 45 C
Сharge continuity Very high Very high Very high Very high Very high
Density 1,02 – 1,06 1,02 – 1,06 1,02 – 1,06 1,08 – 1,09 1,08 – 1,09
Approx. Brookfield viscosity (cPs) 50 – 100 200 – 400 600 – 900 1000 – 3000 8000 – 13000
pH 4,0 – 7,0 4,0 – 7,0 5,0 – 7,0 4,0 – 7,0 5,0 – 7,0
Active substance concentration (%) 19 – 21 19 – 21 19 – 21 39 – 41 39 – 41
Stability (months) 24 24 24 24 24
Storage temperature (°C) 0 – 50 0 – 50 0 – 50 0 – 50 0 – 50
Freezing point (°C)) -3 -3 -3 -3 -3

Packing:

plastic braided bottle 25 kg / plastic barrel 210 kg / container 1100 kg (FL 45 VHM, CLV, C) / container 1050 kg (FL 45 DL, FL 45) / other containers on request.

All these data are provided for information only. They can not be regarded as a specification and do not guarantee the use or any dependence on existing patents.

Discover The Future

Reliable, professional partner on the market of industrial chemistry

Contact Us