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- Feel you are paying too much for your alkali?
- Looking at a safer alternative to caustic soda for pH control in your nitrification process?
- Want a greener alkaline additive for your wastewater treatment?
More alkalinity than caustic soda
When an alkaline compound dissolves in water it produces hydroxide ions, OH– . These ions are responsible for the alkalinity of the solution.
Because Magnesium Hydroxide Mg(OH)2 provides two hydroxides for alkalinity compared to one with NaOH caustic soda (Sodium Hydroxide), the usage rate for Mg(OH)2 is much less than that required for NaOH.
Lower cost-per-pound ≠ cheaper
While ALKA-Mag+ is typically more expensive than 50% NaOH on a “price per unit” basis, it is significantly less expensive in use – because every 1.0 lb of 50% NaOH can be replaced by 0.6 lbs of 60% Mg(OH)2 to provide the same number of moles of hydroxide (OH–) for pH neutralization.
ALKA-Mag+ as a safer, greener and more cost effective caustic soda alternative
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.
Enquire nowSafer and greener means more savings
ALKA-Mag+ is non-hazardous and non-corrosive, which makes it easier and safer to handle, making it a perfect caustic soda replacement. Spill is not reportable.
Because magnesium is a macronutrient – it is the core element of chlorophyll (makes everything green!) – it is also beneficial to the environment while sodium is a salinity hazard.
Magnesium also has coagulation properties that sodium does not. This can result in reduced sludge volume and reduced sludge hauling fees.
CAUSTIC (SODIUM HYDROXIDE) IS STRONGLY IRRITATING AND CORROSIVE. IT CAN CAUSE SEVERE BURNS AND PERMANENT DAMAGE TO SKIN TISSUE ⇒
Key Benefits of magnesium hydroxide
Attractive cost savings
Eliminate odor complaints
Safe and non-hazardous
Optimise your budget
Corrosion free
Turnkey solutions
Watch and learn
ALKA-Mag+ Mg(OH)2: alternative to caustic soda for wastewater treatment – with Birch Bay Water & Sewer
ALKA-Mag+ provides a highly reactive source of magnesium hydroxide (Mg(OH)2) for use in chemical processing, water treatment, and wastewater treatment applications. ALKA-Mag+ offers a safe, non-hazardous means of effective acid neutralization, coagulation, H2S and heavy metals removal in wastewater and process streams. Every 1.0 lb of 50% NaOH can be replaced with 0.60 lbs of 60% Mg(OH)2 to provide the same number of moles of hydroxide (OH-). This 40% reduction in daily usage rate translates into a dramatic cost savings !
Customer Stories
November 10, 2020 \ ACTI-Mag \ Improving the Sustainability of Water Treatment \ Food & Beverage
Caustic soda replacement at a fruit processing plant
A food processing plant in the Pacific Northwest that manufactures fruit products was generating acidic wastewater and looking for a
September 11, 2020 \ ACTI-Mag \ Improving the Sustainability of Water Treatment \ Food & Beverage
Converting from caustic to magnesium hydroxide 
Spokane County Regional Water Reclamation Facility, operated by Jacobs, processes 8 million gallons per day (mgd) of wastewater collected from
October 07, 2020 \ ACTI-Mag \ Improving the Sustainability of Water Treatment \ Food & Beverage
Replacing caustic soda with magnesium hydroxide for metal ion precipitation
A microelectronics manufacturer in the Pacific Northwest was using a complex system of chemical additions in order to effectively remove
High quality products | Proactive customer service
We take pride in providing high-quality products, technical credibility in the applications of water, process water, and wastewater treatment, dedicated delivery specialists and equipment, and proactive on-site technical service.
Manage your wastewater without compromising your people, your operations or the earth.
- Alkalinity & pH control
- Biogas management
- Caustic replacement
- Hydrogen sulfide sequestration
- Odor & corrosion control
- Phosphorous removal
- Polymer usage reduction
- Sludge compaction
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Latest news
June 09, 2021
AMALGAM Mg(OH)2: alternative to caustic soda for wastewater treatment – with Birch Bay Water & Sewer
A safe and cost-effective alternative to the use of sodium hydroxide [caustic soda, NaOH] for wastewater alkalinity and pH adjustment
June 09, 2021
Magnesium Hydroxide’s Role in Sludge Compaction
Trying to determine how to improve wastewater sludge dewatering and compaction can be a very complicated process. The root cause
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IER News Issue 9 – December 2022
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Properties of Magnesium Hydroxide for Wastewater Treatment – Collection System
Once sewage enters the wastewater collection system, its chemical properties can change depending on numerous factors, the most dominant being
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