Wastewater Treatment Products

Using the right type and amount of chemicals are key to a safe, efficient, and sustainable wastewater treatment process. At Aquasan, we help ensure you get the chemistry right to treat impaired water for safe discharge. We help address common issues such as organics, suspended solids, heavy metals, and odors.


We help settle out solids from your wastewater with three main products: polymers, coagulants, and commodities.


There are multiple benefits to achieving the right
chemistry with your wastewater products:
  • Optimize chemistry to meet your local discharge requirements
  • Meet industry-specific contaminants discharge limits
  • Reduce the amount of sludge produced
  • Reduce the amount of chemicals used
  • Reduce the amount of transportation required to get that chemistry on the site
  • Reduce your environmental footprint
  • Reduce your costs


In wastewater treatment, coagulation flocculation involves the addition of compounds that promote the agglomeration of fine particles into larger floc so that they can be more easily separated from the water.


Our technical representatives help clients find the most cost effective and sustainable solutions. Here’s a real world example to put this into perspective.

Case 1

A wastewater treatment manager from a cheese processing plant called Aquasan to optimize dosages and methodology of treatment. The plant is a combination of Physico-chemical treatment followed by a biological treatment. Upon preliminary assessment, it was noticed that the system was showing signs of chemical overdose.


Through a series of jar-testing on the client sites, it was determined that the system did have room for chemistry optimization and redesign. Through a change in coagulant and as well as in charge density and molecular weight for the polymer, jar-tests yielded a possible reduction of 50% in chemical consumption.Aquasan’s team led a plant trial to verify and optimize the proposed solution. A plant trial allows us to verify that the economy in chemicals can be transferred onto the client’s equipment without negatively impacting the quality of discharged water. 


An overall reduction of 60% of chemical consumption was achieved. This also led to : 

  • A reduction of chemical manipulation for operators. 
  • A reduction from weekly deliveries to monthly deliveries. 
  • Reduction of sludge production by more than 50%
  • 43% in cost savings. 
  • Reduction of environmental footprint with choice of chemistry, delivery frequency and sludge production
  • Increase in the stability of treatment. 
  • Decrease in loading pressure on the biological system. 
  • Decrease in load pressure on the dosing equipment.
  • After a year of optimization, overall yearly chemical expenditure was reduced by 66%.

Case 2

A design engineer from an equipment manufacturer who had received the mandate to install a DAF (Dissolved air flotation unit) for a municipal pre-treatment plant mainly treating slaughterhouse effluent called on us to estimate the coagulant consumption of the future plant without us having any wastewater at our disposal to carry out tests. We established this by calculating the dosages of the imposed coagulant (ferric sulphate) according to the theory (chemical reduction of Phosphorus with iron salt).


Once the plant was built, unfortunately the consultant did not take into account our recommendations for adding an alkaline product such as caustic soda to compensate for the decrease in pH resulting from the addition of ferric sulfate (coagulant). Adaptation of the chemical solution according to the design of the plant by recommending another coagulant, an already pre-hydrolyzed aluminum-based coagulant which had the advantage of consuming very little alkalinity compared to the ferric sulfate initially planned. This coagulant had little effect on the pH of the treated water (slight acidification).


The chosen chemical solution allowed both:

  • to comply with sewer discharge standards (pH, Phosphorus, Oils and Fats, Chemical Oxygen Demand)
  • reduce the quantity and number of chemicals needed
  • to be safer for operators since this aluminum-based coagulant is not considered hazardous (unlike ferric sulphate and caustic soda)
  • to respect the client's budget since the recommended chemical solution was less expensive than that initially planned (ferric sulphate + caustic soda)