Upgrade of process for tertiary treatment in purification plants
The wastewater treatment plant must comply with strict standards for suspended pollution discharge. It does this particularly during rainy periods. The facility has simple infrastructures such as screening and a primary settling tank. Additionally, it treats effluents. Flow rates increase suddenly during bad weather. This causes additional difficulties for the plant. Old pipeline networks mix wastewater and rainwater. Finally, this aggravates the situation.
How to treat TSS in a wastewater treatment plant?
The company uses a lamella clarifier and a drum filter to comply with standards. Moreover, this solution is well-suited for small communities by efficiently managing flow variations. Indeed, the lamella clarifier removes heavy particles from wastewater. Then, the drum filter completes the filtration, even during heavy rainfall. Thus, these two technologies ensure optimal treatment while respecting environmental standards.
How can we manage peak flows without oversizing infrastructures?
The lamella clarifier: an effective solution for organic loads
The plant uses the lamella clarifier to manage organic loads. Compact and reliable, it relies on gravity to settle suspended particles. This autonomous process is ideal for this small-sized plant. It requires neither significant space nor costly infrastructure. It ensures compliance with discharge standards under normal conditions. In case of rain, the combination with a drum filter maintains optimal performance. Thus, the plant remains efficient without being oversized.
The drum filter: the answer to peak flows
However, during heavy rainfall, the effluent flow increases rapidly. This leads to a larger amount of water to treat. In this situation, the drum filter becomes essential. The lamella clarifier, which works well under normal conditions, can no longer retain all particles. That’s why the drum filter intervenes to take over. It effectively captures the remaining particles, preventing them from being discharged. Moreover, the drum filter handles flow peaks without compromising overall performance. Thus, the plant maintains treatment quality even under difficult conditions. Consequently, the combination of the two technologies allows compliance with discharge standards in all circumstances.
A significant reduction in TSS with the combined clarifier-filter
The wastewater treatment plant uses a lamella clarifier and a drum filter to effectively treat TSS. This combination allows compliance with environmental standards while optimizing costs. Even in case of heavy rainfall, the system maintains its performance. Analyses have shown concentrations of 5 to 10 mg/L for a flow rate of 11 m³/h. This demonstrates the efficiency of the enclosed drum filter. Thus, the plant guarantees compliant discharges and reliable treatment under all conditions.
To carry out this project, 1h2o3 produced :
For this project, our team managed :
- The precise design, adapted to the station’s needs.
- The concept of the box filter package
- Manufacture and integration of electromechanical equipment
- Delivery and installation on site
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Aquaculture channel drum filter
Filtering
Year of completion
2022
