At D&F Services we provide a wide array of coagulants and flocculents, referred to as DFLOC. We use these chemicals to remove suspended organic colloidal particles in drinking water, wastewater and process water treatment.
Coagulants work by sweep coagulation and/or charge neutralization. Destabilization of particulate matter, natural organic and organic color removal occurs during sweep coagulation. Charge neutralization requires lower doses resulting in lower sludge accumulation and less alkalinity depletion and potentially lower cost.
DFLOC coagulants offer a variety of charged densities that neutralize the negative colloidal particles over a broad pH range. These coagulants can easily destabilize particles in suspension and accelerate FLOC formation. They are typically used as the primary coagulant in municipal and industrial water treatment.
DFLOC flocculents or polymers are “weighting agents”. They can be anionic (negative charge), cationic (positive charge) or non-ionic (neutral). The goal is to drop the FLOC before it hits the filters for turbidity control.
D&F Services has both:
- DFLOC (PAC and ACH)
D&F Services offers one of the broadest lines of polyaluminum chloride and polyaluminum chlorosulfate (PACl/PACS) product lines.. Our product line allows for a more customized solution in a vast range of treatment conditions. These products are well known for enhanced cold water performance as well as quick, strong floc formation and their use commonly results in lower chemical solids formation and less alkali demand when compared to more traditional inorganic coagulants.
Aluminum Chlorohydrate (ACH) is used widely in a variety of industries to meet multiple application goals. Conversion to ACH from a traditional inorganic coagulant typically results in much less alkali demand along with lower chemical solids formation.
- Ferric Chloride and Ferric Sulfate
Ferric Chloride is used in many different municipal and industrial water treatment applications. This traditional iron salt is applied in multiple wastewater treatment operations, such as phosphorus removal, hydrogen sulfide control, sludge thickening, conditioning and dewatering agent, and chemically enhanced clarification. Ferric chloride is also utilized as a primary coagulant in drinking water treatment.
Ferric Sulfate are used in many different municipal and industrial applications. In water and wastewater treatment operations, ferric salts are used as coagulants or flocculants for water clarification, odor control to minimize hydrogen sulfide release, for phosphorus removal, and as a sludge thickening, conditioning and dewatering agent.
- Aluminum Sulfate (Alum)
Aluminum Sulphate (Alum) is used in the water and wastewater treatment. It is inexpensive and effective for a broad range of treatment problems because it can function as a coagulant, flocculant, precipitant and emulsion breaker. As a coagulant and flocculant, alum removes turbidity, total organic carbon (TOC) which can be disinfection byproduct precursors, suspended solids and colloidal color, reduces biochemical oxygen demand (BOD) and clarifies potable, process and wastewater.
- Polymers (DADMAC, EPI, Emulsions)
D&F Services offers anionic, nonionic, and cationic flocculants in dry powder, liquid emulsion, and liquid solution forms that are derived from different methods of polymerization.
- Dry Powders: Monomers are polymerized in a gel form. The gel obtained is then ground and dried. The main advantage of these products is the 100% activity.
- Liquid Emulsions: Monomers are emulsified in a solvent and then polymerized. At the end of polymerization, a surfactant is added (also called invertor or breaker) that makes the emulsion polymer readily dilutable in water. The main advantages of these products are their liquid form (ease of use) and increased performance on certain substrates due to their possible variations in specific molecular structure.
- Liquid Solutions: Monomers are polymerized at low concentration in aqueous solution. The main advantage with these products is the simplicity of use.
D& F Services provides jar testing to assist with chemical selection, turbidity reduction and TOC removal. Contact us for in plant assistance.
