ChemEng^R Organic Coagulants and Flocculants
Polymers are synthetic polyelectrolytes that function as coagulants and/or flocculants. They carry a cationic, nonionic, or anionic charge. The type of charge, charge density, and molecular weight determine the applicability of each polymer to a specific wastewater problem. The effective dosage required for any application is determined through jar testing.

ChemEng^R Inorganic Coagulants
Aluminum and iron salts are the most widely used inorganic coagulants. These include alum (aluminum sulfate), sodium aluminate, poly basic aluminum salts of sulfate or chloride, ferric sulfate, ferrous sulfate, ferric chloride, and poly basic iron salts.

Our poly-metal salts are produced by reacting iron and aluminum salts with various bases. Numerous versions with varying degrees of neutralization are available. The resulting products are polyhydroxides containing aluminum ions and a variable multivalent charge. Since it is the products of hydrolysis that cause charge neutralization, poly-metal salts demonstrate enhanced performance compared to simple metal salts or aluminate.

ChemEng^R Specialized Organic Coagulants
The 5100 series of organic coagulants designed for hard-to-treat industrial waters. They work by self-precipitation and/or charge neutralization, producing a lower sludge volume compared to inorganic coagulants, because they do not entrap as much water.

Organic coagulants can outperform conventional polymers  when treating water contaminated with a variety of oils or colloidal material,

They can provide many benefits including:

• Outstanding oil/water separation
• Lower sludge volume
• Reduced sludge handling/costs
• More tolerant of pH variations

These materials are typically low molecular weight, high charge cationic coagulants that perform well on a wide variety of industrial wastes.  

 ChemEng^R Metal Precipitants
To help meet stricter effluent requirements, Amelin offers a family of metals removal products.

 The use of organic precipitants in conjunction with coagulant and flocculant technology is effectively removes a wide range of various metals (Cu, Ni, Zn, Cr, Ag, Pb, Cd, Hg).  The method is characterized as a three-step approach involving the following:

1. Producing insoluble metal compounds using organic precipitants
2. Coagulating these precipitates for more effective removal rates
3. Flocculating the fine particles to promote rapid and complete settling