Manage industrial paint residues with our powerful system
The installation effectively managed industrial paint effluents through our compact coagulation-flocculation-sedimentation system. This process allowed for the removal of solid particles and a large portion of COD (Chemical Oxygen Demand) before discharge, while optimizing space and operational costs. By combining this physicochemical treatment with efficient sedimentation, the water was purified to meet the strictest environmental standards, thus ensuring an economical and sustainable solution for industrialists.
How to Treat Industrial Paint Effluents?
With increasingly stringent environmental standards, the paint industry must treat its effluents loaded with COD (Chemical Oxygen Demand) and suspended solids. Our client wanted to implement a compact system to effectively reduce these pollutants. Their goal was to eliminate more than 90% of suspended solids and maximize the reduction of dissolved COD. Additionally, the system needed to adapt to variable flow rates while considering the physicochemical characteristics of the effluents.
This processing requires the following:
- The flow rate varies from 1 to 10 m³/h, with a design for 15 m³/h.
- The coagulation-flocculation process is located upstream to optimize sedimentation.
- The installation is placed in a container, protected from weather conditions.
- The pH is adjusted between 6 and 8 as needed.
- The effluent temperature is maintained between 5 and 25 degrees.
- A buffer tank is used to regulate fluctuations before the settler.
- A pumping system ensures the evacuation of sedimented sludge.
- Little to no formation of floating sludge, optimizing treatment efficiency.
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What is the Purpose of the Jar Test in Paint Effluent Treatment?
First, we strongly recommend jar tests to evaluate the effectiveness of the coagulation-flocculation process applied to paint effluents. Next, these tests help determine the optimal doses of coagulants and flocculants to maximize the agglomeration of particles present in the effluent. By simulating the actual treatment conditions, jar tests allow for the assessment of system performance as well as water quality after treatment. Moreover, the results obtained are essential in deciding whether a settler is necessary to improve system efficiency. Finally, these tests confirm that the chosen technology effectively reduces COD and suspended solids, thus ensuring compliance with environmental standards.
Coagulation-Flocculation: The Most Suitable Method for Paint Effluent Treatment
To address the challenge of paint effluent treatment, the solution relies on a coagulation-flocculation system followed by an efficient settler. This process effectively separates fine particles as well as the COD present in contaminated water. The compact and modular system used optimizes solid separation in a confined space, while recovering sediments and maximizing sedimentation efficiency. Coupled with a preliminary chemical treatment, the coagulation-flocculation process aggregates fine particles, thus improving their settleability. This approach ensures rapid removal of pollutants, guaranteeing efficient and economical treatment of industrial effluents.
COD and Particle Removal Efficiencies Exceeding 90%
First, analyses conducted after the system installation demonstrated a reduction of over 90% in COD and suspended solids in paint effluents. Next, these results confirm that the process meets the initially set treatment objectives. Additionally, this compact configuration effectively treats residues, even with fluctuating flow rates, and ensures stable performance, adapted to the specific constraints of each installation. Finally, a major advantage of this approach is its low operating cost, significantly lower than systems requiring activated carbon treatment or expensive membranes.
To successfully complete this project, our team carried out:
The team completed the project including:
- Precise sizing of the coagulation-flocculation-sedimentation system.
- The design of a compact solution, adapted to the site constraints.
- The manufacture and integration of necessary electromechanical equipment.
- The delivery and installation at the industrial site.
This integrated approach thus ensured a coherent and operational solution, fully respecting the technical and environmental requirements of the project for the treatment of paint effluents.
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Compact Clarifloculator CFC.DLC
Coagulation flocculation
Year of completion
2022
