Chemical treatment of wastewater has been around for a long time. It’s safe, reliable and cost-effective. The same process that happens in nature. We just accelerate it in treatment plants. Chemical treatment of wastewater has been around for a long time. It’s safe, reliable and cost-effective. The same process that happens in nature. We just accelerate it in treatment plants.

The safe and sustainable way to clean water

Effective wastewater treatment plants are vital for communities and industries around the world. They also face tight operating budgets and are constantly looking for ways to improve efficiency. Chemicals can bring substantial energy-savings in the wastewater treatment process. Using coagulants in addition to or instead of biological methods can save up to 50% of aeration energy in organic (BOD) removal, and can double biogas production. Our unique, broad range of water treatment expertise and products offers solutions to all wastewater challenges.

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Nutrient removal and recovery

Less and less phosphorus is allowed in wastewater treatment plant effluent. Phosphorus and Nitrogen discharge to water bodies are the main cause of eutrophication and algae blooming, which can have negative consequences for aquatic life. Phosphorus is vital for food production and animal feed. We waste a lot of the valuable P because of insufficient wastewater treatment and poor nutrient recycling.

The dominating process for the removal of phosphorus is chemical precipitation. With chemically precipitated sludge, effective nutrient recycling is also possible, making phosphorus available to plants and crops. Typically, phosphorus removal is done with coagulants before the biological treatment but phosphorus can also be precipitated in the biological treatment process or as the final step of the treatment process.

Nitrogen is normally removed in a biological process consisting of two steps – nitrification and denitrification. By using our chemistries before the biological treatment, the nitrification capacity is increased. Whatever your problem might be with phosphorus and nitrogen, Kemira has deep expertise in finding the most effective and cost-efficient solution.

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Odor, corrosion, foam and scale control

Several chemical interactions are continuously occurring in your process’ water phase. This can result in troublesome odor, corrosion, foam and scale problems. Based on our experience in troubleshooting hundreds of water treatment plants and industrial processes, we have the right chemistry to deal with any such problems.

There are numerous sources of odor in wastewater systems. Knowing the dominant source of the nuisance is essential for the correct mitigation approach. In most cases, problems are caused by hydrogen sulfide, H2S. Mineral scale, such as struvite, vivianite and calcite, can cause expensive and difficult problems like clogged pipes and heat exchangers, as well as damaged pumps, sensors and valves. Foam can be a problem in many water treatment applications as well as in various production processes.

Kemira offering tackles all these challenges. Optimization and cost-savings without jeopardizing safety is a key component for our solutions that combine chemistry expertise and real-time monitoring and optimization. Understanding the complete system is critical for providing a successful solution.

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