Polymer Usage Reduction

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Are you looking to reduce your polymer usage?

Do you need to add Alkalinity to your wastewater system?

Did you know that your alkali addition can affect polymer usage?

Magnesium Hydroxide role in Polymer reduction

When Magnesium Hydroxide is added to a wastewater stream it’s most obvious benefit is to increase the pH and Alkalinity through the controlled release of hydroxide (OH).  Less obvious are the coagulation benefits provided by the divalent Magnesium cation (Mg2+).

The higher the charge (valence) on any ion, the higher the charge density of that ion.  An increase in charge density makes it more like a magnet,  giving the ion a strong ability to draw negative charged particles towards it.  This attraction between positive and negative ions is what leads to enhanced coagulation.

The effect of increasing charge density is shown with the decreasing sizes of the sodium (Na+), magnesium(Mg2+) and aluminum (Al3+) ions.  Due to it’s large size and low charge, the sodium ion (Na+) does not possess coagulation properties.  Alternatively, the aluminum ion (Al3+) has a high charge density making it very usefully as a coagulant, in such products as alum and poly aluminum chloride.

The charge density of the magnesium ion (Mg2+) is between that of Na+ and Al3+, resulting in many wastewater applications that show coagulation benefits.  In such instances, the customers enjoy both cost savings from replacement of caustic soda, as well as a reduction in polymer usage in solids dewatering.

 

 

ALKA-Mag+ for improving your polymer usage rates

ALKA-Mag+ (60% Mg(OH)2) has a higher neutralizing value per pound than any other alkaline additive.  This translates into a 40% reduction in chemical usage when compared with caustic soda, while being significantly safer for operators to handle and more nutritive for the microorganisms being maintained – making it the most cost-effective option.

* In 2022, AMALGAM-60 was renamed ALKA-Mag+, improved stability, flowability, and reactivity from IER & Calix’s synergy.

Find out more

Key Benefits

Reduced polymer usage, making for lower cost sludge disposal
Stabilized pH throughout the wastewater treatment system
Magnesium is a macronutrient, the core element in chlorophyll that makes everything green – while sodium is a salinity hazard
Non-hazardous for employees to handle, corrosion free, spill is not reportable

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