Wastewater

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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The safe and sustainable way to clean water

Operation services – Kemira Operon

Kemira Operon is a turnkey service concept for wastewater treatment plants. We work with wastewater plant owners in both municipalities and private water-intensive industries to provide plant management services customized to specific needs – from selected operative and maintenance tasks to fully outsourced plant management.

By relying on Kemira’s expertise with operations and maintenance, you gain peace of mind through stable and optimized performance, combined with world-class safety and regulatory compliance. Continuous access to our industry-leading knowledge in water chemistry and latest innovations ensures the plant is always operated at its optimum efficiency.

The Operon service agreements are based on specific key performance indicators which are agreed together. Our customers report significant improvements in plant performance, reduced sludge handling costs and improved total energy-efficiency thanks to their partnerships with Kemira Operon.

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Operation services – Kemira Operon

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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Nutrient removal and recovery

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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Odor, corrosion, foam and scale control

You might also be interested in

Sludge dewatering

It is important that sludge volumes are kept at a minimum with a high dry-solids content to reduce disposal costs. Our customers report success cases in sludge dewatering where we have significantly increased dry solids. This gives direct benefits not only in reduced costs, but also by increasing the dewatering unit capacity at the same polymer dosage. In addition, odor control, mainly hydrogen sulfide and ammonia emissions, can be improved and cleanouts due to struvite reduced.

Partnering with us offers you a full range of organic and inorganic coagulants and polymers, combined with monitoring and optimizing solutions and extensive application knowhow. Our approach to enhanced sludge dewatering includes technologies for smart process management and enables the optimization of chemical consumption, always delivering the best dewatering performance.

More and more industries are starting to run anaerobic digesters to capture the full energy potential of their organic waste. Producing biogas from organic sludge is a viable way to reduce energy costs. We can help you in boosting your biogas production capability.

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Sludge dewatering

Biogas

Biomass utilization is one of the answers to the global need to minimize our environmental footprint, and the amount of organic waste. Biogas is a renewable energy source that overlaps with wastewater management. It makes use of organic waste, such as industrial and household biowaste, or wastewater sludge. Biogas is gaining ground as a promising form of renewable energy used to create electricity and heat.

Each biogas process is unique and has different needs depending on substrate composition, digestion technology, digestate treatment and gas utilization. We work together with you to find the correct customized solution for each case depending on the content of the biomass. With the help of Kemira expertise, you can increase biogas yield, gas quality and the cost-efficiency of waste disposal.

Find out how we can help you with sludge dewatering.

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Biogas

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