In a coal power plant, the oil wastewater treatment is an important part of the energy-producing process. The wastewater is produced in different areas. On the one hand, it can be cooling water to protect the plant components from overheating, and on the other hand, it can be wastewater from boiler heating, which is produced during the actual energy generation process. Especially during boiler heating, but also during the cleaning of all plant components, oils mix into the wastewater. Therefore, the oil wastewater treatment in a coal power plant is an important step to protect the environment.
When cleaning the system, high wastewater pressure is necessary to efficiently clean all surfaces and components. In the process, the oil droplets split into fine oil particles that do not float to the water surface but remain suspended in the wastewater. Conventional oil wastewater treatment by an oil separator is therefore only partially effective. Like many coal power plants, the customer from Bosnia discharges its wastewater into a public body of water. With 3,300 m³ of wastewater daily, it also produces a very high wastewater load. Therefore, reliable oil wastewater treatment is particularly important.
To cope with the high flow rate, the customer provides a concrete catch basin on the company premises. From there, the wastewater enters a sand filtration system, which removes all coarser contaminants from the wastewater. To remove a first part of the oil from the wastewater, the ClearFox® team used a coalescence stage for the oil wastewater treatment. The floating oil separates from the water via a mechanical system and thus does not reach the next treatment step.
The coalescence stage is followed by a ClearFox® DAF to remove the dissolved and suspended substances from the wastewater. To achieve precipitation and flocculation, the plant adds flocculation aids to the wastewater to convert the dissolved substances into separable substances. In this way, it also binds the oil particles in the wastewater and thus increases their surface area. An aeration system carries all solids to the top, where they collect as sludge, which the plant can discharge at regular intervals. The company collects the sludge safely in a container to be transported away at regular intervals. After oil wastewater treatment by the ClearFox® treatment plant, the oil content in the wastewater is less than 0.05 mg/l.
For this project, the ClearFox® team took over the complete planning of the project. They designed the plant and helped build the catch basin. After delivery, they installed the plant on site and instructed all employees in its operation to ensure a smooth and reliable process.
Yes, ClearFox® technology is modular and can be customized to meet individual requirements. Our team of experts will analyze the specific conditions and requirements of your project (such as wastewater composition, flow rate and site conditions) to develop a customized solution.
No, ClearFox® systems are flexible and can be adapted to existing infrastructure. In this case, a concrete retention basin was provided, but we can also offer alternatives such as containerised treatment plants to suit your circumstances.
Our systems are designed to be low maintenance and easy to operate. Regular inspections and sludge removal are the main tasks that can be carried out efficiently with a short training of your staff.
ClearFox® plants are designed to fully comply with local environmental and wastewater legislation. In the case described, the oil content in the wastewater was reduced to less than 0.05 mg/l - a value that exceeds most international standards.
Yes, our plants are scalable and can be adapted to high flow rates. In this project 3,300 m³ of wastewater were treated per day - we can provide plants for larger or smaller capacities.
The combination of coalescence stage and DAF system enables efficient removal of the finest oil particles and dissolved substances that conventional separators cannot handle. This achieves a much higher cleaning performance, which leads to significantly lower residual oil levels in the wastewater.
