Biological treatment with high degradation efficiency
Aerobic water treatment utilizes the natural metabolism of microorganisms to efficiently break down organic contaminants through the addition of oxygen. The process is a proven standard for the biological treatment of highly contaminated wastewater and enables a reliable reduction in COD and BOD levels.
In aerobic wastewater treatment, microorganisms reliably break down organic matter in the presence of oxygen. Since this natural process does not require the use of expensive chemicals, it is often an efficient method of wastewater treatment for large organic loads. The result is low COD and BOD levels, stable operating conditions, and treated water at low operating costs.
SPALECK Wassertechnik develops customized solutions tailored to your processes and the characteristics of your wastewater.
Wastewater treatment in the presence of oxygen is a proven method for reducing COD and BOD levels. Microorganisms reliably break down complex substances during treatment. This allows for a higher level of water purity than can be achieved with purely mechanical processes and supports your downstream process.
Whether it’s nitrogen removal or the degradation of trace substances, the biological treatment stage enables more thorough wastewater treatment. By converting critical pollutants, this stage helps ensure compliance with specified limit values throughout the process. Our solutions are designed to ensure that your wastewater is discharged in full compliance with legal requirements.
Our water treatment systems are designed to handle fluctuating wastewater loads. By controlling the oxygen supply based on actual demand, aeration can be dynamically adjusted to the quality and volume of the wastewater. This ensures stable treatment even during peak loads from your production process.
Aerobic wastewater treatment is an important component of legally compliant wastewater treatment. By allowing microorganisms to break down organic pollutants, the process enables the treated wastewater to be discharged directly or indirectly into receiving waters or the municipal sewer system. This helps reduce wastewater discharge fees, minimize Maintenance effort throughout the entire process, and ensure compliance with required effluent quality standards.
Industrial wastewater contains various substances that can affect processes, equipment, and environmental regulations. SPALECK Wassertechnik develops appropriate combinations of processes to reduce organic and, in some cases, inorganic contaminants and help maintain stable water quality.
Every process leaves its own unique composition in the wastewater. In our in-house laboratory, we conduct detailed degradation studies on your wastewater. Based on the results, we evaluate and design a solution tailored to your specific parameters. This enables us to support stable process control even with complex mixtures of substances.
Chemical oxygen demand (COD) and biological oxygen demand (BOD) are important indicators of the organic load in your wastewater. In the aerobic treatment stage, specialized microorganisms use the dissolved organic compounds as food. Under controlled oxygen supply, these substances are largely metabolized and converted into Biomass. This significantly reduces the organic load and results in clear effluent.
Aerobic wastewater treatment creates a stable environment populated by beneficial microorganisms. This highly active activated sludge competes directly with pathogenic microorganisms and can suppress their growth. To ensure complete disinfection—for example, when the water is reused as process water—the aerobic treatment stage prepares the water for downstream disinfection.
PFAS compounds are hardly biodegradable. Nevertheless, aerobic wastewater treatment plays an important role in the overall process: It reduces the organic background load (COD) of your wastewater.
This pretreatment prevents other contaminants from prematurely clogging the downstream specialty filters. Without biological COD reduction, up to 99.9% of the activated carbon or ion exchangers could be occupied by accompanying substances—leaving correspondingly little adsorption capacity for the PFAS molecules. After the biological reduction of COD, the adsorption capacity of the filter media for PFAS can increase fiftyfold.
This enables more targeted and more efficient removal of contaminants and extends the service life of your filtration system.
High nitrogen loads pose an environmental burden. Through the targeted control of aeration phases, our aerobic treatment stage first converts ammonium into nitrite and then into nitrate (nitrification). In a downstream anaerobic stage, this nitrate is ultimately broken down into harmless, gaseous nitrogen. This helps facilitate discharge into water bodies.
Dissolved iron and manganese can cause turbidity and Blockages in process equipment. In parallel with the reduction of COD and BOD, these metals are oxidized through intensive oxygen supply in the aerobic stage. In the process, they transition from a dissolved to a solid state and can then be mechanically separated during the separation phase. This protects your plant infrastructure from corrosion and deposits.
Organic oils and greases can pose challenges for wastewater treatment. In our high-performance aerobic treatment stage, these substances are biologically degraded. Instead of clogging pipes and filters, the grease is incorporated into the biological treatment process. This can help reduce the maintenance effort for your facility.
Pesticides often consist of complex organic molecules. Aerobic water treatment utilizes the metabolic activity of microorganisms to break down these active ingredients and disrupt their molecular chains. Many pesticides are thus mineralized or converted into a form that can be removed during the subsequent fine filtration process.
Aerobic water treatment utilizes a natural principle: the breakdown of organic matter by oxygen and specialized microorganisms. In our plants, this process is supported by targeted control systems and state-of-the-art machinery. The goal is an efficient treatment cycle that adapts to your wastewater load and guarantees consistently high water quality.
In the first step, oxygen is injected into the wastewater in the form of fine bubbles. It serves as the basis for the biological process: The oxygen activates the aerobic microorganisms living in the water and, at the same time, oxidizes dissolved substances such as iron or manganese so that they can flocculate and be filtered out.
The actual biological treatment takes place in the aeration tank. The microorganisms use the dissolved organic contaminants (COD/BOD) and nitrogen compounds as a source of food and energy. In the process, they break down complex molecular chains and mineralize them into end products such as water, CO2, and Biomass.
In the final step, the treated liquid is separated from the resulting Biomass—the activated sludge. This is done either through sedimentation and Drainage or through state-of-the-art membrane filtration. The result is clear, odorless water. Depending on the plant design, the excess sludge is either recycled or removed.
Every industrial process has its own specific water quality requirements. We’ll work with you to find the right water treatment solution for your needs.
The Foundation for Safe Industrial Processes
The efficiency of aerobic treatment also depends on the quality of the raw water used. By specifically treating well water in the first step, we prevent undesirable substances from interfering with the oxygen supply or damaging the biological system. This ensures consistent pollutant removal, protects your plant equipment from deposits, and simultaneously reduces your reliance on expensive municipal water.
Ensure Precise Conductivity
High-quality process water ensures your product quality and protects your infrastructure. By using Reverse osmosis or ion exchange systems downstream of the aerobic treatment stage, we ensure that hardness and conductivity meet your requirements. This provides you with treated water that is tailored to your internal usage processes and helps preserve the value of your equipment.
Optimize Costs
Not every application requires drinking-water quality. The clarified water recovered from the aerobic stage, after targeted filtration, provides a suitable basis for cooling processes, fire suppression systems, or washing applications. By recycling this water, you optimize your water balance, reduce operating costs, and simultaneously meet the environmental requirements of modern industrial sites.
Circular Economy
Close the loop right at the source. By combining our aerobic systems with membrane and filtration technology, we treat your wastewater so that it can be reused in the process. This reduces wastewater fees and strengthens your site’s independence from local water resources—environmentally sound and highly efficient.
Spaleck Wassertechnik GmbH
6 Robert-Bosch Street
46397 Bocholt
Phone: +49 2871 2134 – 0
E-mail: info@spaleck.de
Oxygen-assisted wastewater treatment offers a reliable solution for industrially contaminated wastewater. Through the targeted addition of oxygen, pollutants are biologically degraded, and COD and BOD levels are reduced. The water is thus prepared for reuse or safe discharge.
Stable Processes Despite Oil and Grease
Cooling lubricants, greases, oils, and metal residues can significantly pollute wastewater. Our aerobic processes ensure consistent treatment performance and reliably reduce COD and BOD levels. The result is clearly treated wastewater.
Hygienically Degrade Organic Loads
High concentrations of sugars, greases, proteins, and starch are suitable for aerobic biological treatment. Our systems break down these organic loads and significantly reduce COD and BOD levels. This helps ensure the supply of hygienically clean water and compliance with strict regulations.
Efficient Removal of Solvents
Pigments, solvents, and resins pose significant challenges for wastewater treatment. Through aerobic treatment, these substances can be biodegraded, and the chemical oxygen demand can be specifically reduced. This makes the water suitable for use in subsequent production steps or prepares it for discharge.
Treating Complex Compounds
Complex organic compounds and solvents pose significant challenges for wastewater treatment. Aerobic processes biologically degrade these substances and reduce pollutant levels. This allows you to recover water for further production steps and reduce disposal costs.
Efficiently Treating Fiber Residues
Fibers, starch, and organic residues often result in high levels of wastewater pollution. Our aerobic systems biologically break down these substances and reduce COD and BOD levels. This allows the water to be recycled back into the production process and helps preserve your water balance.
Customized Solutions for Your Industry
Every production process has its own unique composition and places specific demands on wastewater treatment. Our aerobic systems can be tailored to your specific parameters to reduce pollution and efficiently reuse water. We design a solution tailored to your needs.
If you have any questions about SPALECK water technology, our experts will be happy to assist you.
Here you’ll find answers to frequently asked questions about aerobic water treatment with SPALECK water technology. If you have any further questions, please feel free to contact us!
Yes, when space is limited, we rely on compact technologies. These require significantly less space than conventional systems and at the same time deliver excellent water quality that almost reaches drinking water level and is ideal for recirculation.
This is a central point in our engineering. We rely on highly efficient systems and intelligent control. The system regulates the oxygen supply precisely according to actual demand. In this way, we avoid unnecessary energy consumption during non-production times and reduce your running costs.
Aerobic processes produce excess biological sludge. On request, we integrate the appropriate sludge treatment directly – from thickening to dewatering. Our aim is to reduce the volume of sludge to such an extent that your disposal costs and the number of removals are reduced to a minimum.
Our systems are characterized by a high degree of flexibility. Thanks to sufficiently dimensioned buffer tanks and robust biology, we can absorb peak loads. The control system of the SPALECK wastewater treatment plants automatically adjusts the cleaning cycles to the current load in order to achieve a stable effluent quality.
Aerobic processes are extremely versatile and proven. They are ideal for wastewater with a medium organic load, as is the case in many branches of industry. The process is comparatively easy to control and delivers a very high purification performance, meaning that the water can often be discharged directly without any problems or even reused after filtration.
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